Mercurial > vim
annotate src/regexp.c @ 14782:d2aea794a681 v8.1.0403
patch 8.1.0403: header file missing from distribution
commit https://github.com/vim/vim/commit/cc3a997746d97980374fcc9094651a5f82a6c63d
Author: Bram Moolenaar <Bram@vim.org>
Date: Tue Sep 18 21:41:47 2018 +0200
patch 8.1.0403: header file missing from distribution
Problem: Header file missing from distribution.
Solution: Add src/protodef.h.
author | Christian Brabandt <cb@256bit.org> |
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date | Tue, 18 Sep 2018 21:45:05 +0200 |
parents | 72d506d94f3f |
children | 27b9a84395b5 |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 2 * |
3 * Handling of regular expressions: vim_regcomp(), vim_regexec(), vim_regsub() | |
4 * | |
5 * NOTICE: | |
6 * | |
7 * This is NOT the original regular expression code as written by Henry | |
8 * Spencer. This code has been modified specifically for use with the VIM | |
9 * editor, and should not be used separately from Vim. If you want a good | |
10 * regular expression library, get the original code. The copyright notice | |
11 * that follows is from the original. | |
12 * | |
13 * END NOTICE | |
14 * | |
15 * Copyright (c) 1986 by University of Toronto. | |
16 * Written by Henry Spencer. Not derived from licensed software. | |
17 * | |
18 * Permission is granted to anyone to use this software for any | |
19 * purpose on any computer system, and to redistribute it freely, | |
20 * subject to the following restrictions: | |
21 * | |
22 * 1. The author is not responsible for the consequences of use of | |
23 * this software, no matter how awful, even if they arise | |
24 * from defects in it. | |
25 * | |
26 * 2. The origin of this software must not be misrepresented, either | |
27 * by explicit claim or by omission. | |
28 * | |
29 * 3. Altered versions must be plainly marked as such, and must not | |
30 * be misrepresented as being the original software. | |
31 * | |
32 * Beware that some of this code is subtly aware of the way operator | |
33 * precedence is structured in regular expressions. Serious changes in | |
34 * regular-expression syntax might require a total rethink. | |
35 * | |
24 | 36 * Changes have been made by Tony Andrews, Olaf 'Rhialto' Seibert, Robert |
37 * Webb, Ciaran McCreesh and Bram Moolenaar. | |
7 | 38 * Named character class support added by Walter Briscoe (1998 Jul 01) |
39 */ | |
40 | |
4444 | 41 /* Uncomment the first if you do not want to see debugging logs or files |
42 * related to regular expressions, even when compiling with -DDEBUG. | |
43 * Uncomment the second to get the regexp debugging. */ | |
44 /* #undef DEBUG */ | |
45 /* #define DEBUG */ | |
46 | |
7 | 47 #include "vim.h" |
48 | |
4444 | 49 #ifdef DEBUG |
50 /* show/save debugging data when BT engine is used */ | |
51 # define BT_REGEXP_DUMP | |
52 /* save the debugging data to a file instead of displaying it */ | |
53 # define BT_REGEXP_LOG | |
4460 | 54 # define BT_REGEXP_DEBUG_LOG |
55 # define BT_REGEXP_DEBUG_LOG_NAME "bt_regexp_debug.log" | |
4444 | 56 #endif |
7 | 57 |
58 /* | |
59 * The "internal use only" fields in regexp.h are present to pass info from | |
60 * compile to execute that permits the execute phase to run lots faster on | |
61 * simple cases. They are: | |
62 * | |
63 * regstart char that must begin a match; NUL if none obvious; Can be a | |
64 * multi-byte character. | |
65 * reganch is the match anchored (at beginning-of-line only)? | |
66 * regmust string (pointer into program) that match must include, or NULL | |
67 * regmlen length of regmust string | |
68 * regflags RF_ values or'ed together | |
69 * | |
70 * Regstart and reganch permit very fast decisions on suitable starting points | |
71 * for a match, cutting down the work a lot. Regmust permits fast rejection | |
72 * of lines that cannot possibly match. The regmust tests are costly enough | |
73 * that vim_regcomp() supplies a regmust only if the r.e. contains something | |
74 * potentially expensive (at present, the only such thing detected is * or + | |
75 * at the start of the r.e., which can involve a lot of backup). Regmlen is | |
76 * supplied because the test in vim_regexec() needs it and vim_regcomp() is | |
77 * computing it anyway. | |
78 */ | |
79 | |
80 /* | |
81 * Structure for regexp "program". This is essentially a linear encoding | |
82 * of a nondeterministic finite-state machine (aka syntax charts or | |
83 * "railroad normal form" in parsing technology). Each node is an opcode | |
84 * plus a "next" pointer, possibly plus an operand. "Next" pointers of | |
85 * all nodes except BRANCH and BRACES_COMPLEX implement concatenation; a "next" | |
86 * pointer with a BRANCH on both ends of it is connecting two alternatives. | |
87 * (Here we have one of the subtle syntax dependencies: an individual BRANCH | |
88 * (as opposed to a collection of them) is never concatenated with anything | |
89 * because of operator precedence). The "next" pointer of a BRACES_COMPLEX | |
167 | 90 * node points to the node after the stuff to be repeated. |
91 * The operand of some types of node is a literal string; for others, it is a | |
92 * node leading into a sub-FSM. In particular, the operand of a BRANCH node | |
93 * is the first node of the branch. | |
94 * (NB this is *not* a tree structure: the tail of the branch connects to the | |
95 * thing following the set of BRANCHes.) | |
7 | 96 * |
97 * pattern is coded like: | |
98 * | |
99 * +-----------------+ | |
100 * | V | |
101 * <aa>\|<bb> BRANCH <aa> BRANCH <bb> --> END | |
102 * | ^ | ^ | |
103 * +------+ +----------+ | |
104 * | |
105 * | |
106 * +------------------+ | |
107 * V | | |
108 * <aa>* BRANCH BRANCH <aa> --> BACK BRANCH --> NOTHING --> END | |
109 * | | ^ ^ | |
110 * | +---------------+ | | |
111 * +---------------------------------------------+ | |
112 * | |
113 * | |
167 | 114 * +----------------------+ |
115 * V | | |
233 | 116 * <aa>\+ BRANCH <aa> --> BRANCH --> BACK BRANCH --> NOTHING --> END |
856 | 117 * | | ^ ^ |
118 * | +-----------+ | | |
179 | 119 * +--------------------------------------------------+ |
167 | 120 * |
121 * | |
7 | 122 * +-------------------------+ |
123 * V | | |
124 * <aa>\{} BRANCH BRACE_LIMITS --> BRACE_COMPLEX <aa> --> BACK END | |
125 * | | ^ | |
126 * | +----------------+ | |
127 * +-----------------------------------------------+ | |
128 * | |
129 * | |
130 * <aa>\@!<bb> BRANCH NOMATCH <aa> --> END <bb> --> END | |
131 * | | ^ ^ | |
132 * | +----------------+ | | |
133 * +--------------------------------+ | |
134 * | |
135 * +---------+ | |
136 * | V | |
137 * \z[abc] BRANCH BRANCH a BRANCH b BRANCH c BRANCH NOTHING --> END | |
138 * | | | | ^ ^ | |
139 * | | | +-----+ | | |
140 * | | +----------------+ | | |
141 * | +---------------------------+ | | |
142 * +------------------------------------------------------+ | |
143 * | |
1209 | 144 * They all start with a BRANCH for "\|" alternatives, even when there is only |
7 | 145 * one alternative. |
146 */ | |
147 | |
148 /* | |
149 * The opcodes are: | |
150 */ | |
151 | |
152 /* definition number opnd? meaning */ | |
153 #define END 0 /* End of program or NOMATCH operand. */ | |
154 #define BOL 1 /* Match "" at beginning of line. */ | |
155 #define EOL 2 /* Match "" at end of line. */ | |
156 #define BRANCH 3 /* node Match this alternative, or the | |
157 * next... */ | |
158 #define BACK 4 /* Match "", "next" ptr points backward. */ | |
159 #define EXACTLY 5 /* str Match this string. */ | |
160 #define NOTHING 6 /* Match empty string. */ | |
161 #define STAR 7 /* node Match this (simple) thing 0 or more | |
162 * times. */ | |
163 #define PLUS 8 /* node Match this (simple) thing 1 or more | |
164 * times. */ | |
165 #define MATCH 9 /* node match the operand zero-width */ | |
166 #define NOMATCH 10 /* node check for no match with operand */ | |
167 #define BEHIND 11 /* node look behind for a match with operand */ | |
168 #define NOBEHIND 12 /* node look behind for no match with operand */ | |
169 #define SUBPAT 13 /* node match the operand here */ | |
170 #define BRACE_SIMPLE 14 /* node Match this (simple) thing between m and | |
171 * n times (\{m,n\}). */ | |
172 #define BOW 15 /* Match "" after [^a-zA-Z0-9_] */ | |
173 #define EOW 16 /* Match "" at [^a-zA-Z0-9_] */ | |
174 #define BRACE_LIMITS 17 /* nr nr define the min & max for BRACE_SIMPLE | |
175 * and BRACE_COMPLEX. */ | |
176 #define NEWL 18 /* Match line-break */ | |
177 #define BHPOS 19 /* End position for BEHIND or NOBEHIND */ | |
178 | |
179 | |
180 /* character classes: 20-48 normal, 50-78 include a line-break */ | |
181 #define ADD_NL 30 | |
182 #define FIRST_NL ANY + ADD_NL | |
183 #define ANY 20 /* Match any one character. */ | |
184 #define ANYOF 21 /* str Match any character in this string. */ | |
185 #define ANYBUT 22 /* str Match any character not in this | |
186 * string. */ | |
187 #define IDENT 23 /* Match identifier char */ | |
188 #define SIDENT 24 /* Match identifier char but no digit */ | |
189 #define KWORD 25 /* Match keyword char */ | |
190 #define SKWORD 26 /* Match word char but no digit */ | |
191 #define FNAME 27 /* Match file name char */ | |
192 #define SFNAME 28 /* Match file name char but no digit */ | |
193 #define PRINT 29 /* Match printable char */ | |
194 #define SPRINT 30 /* Match printable char but no digit */ | |
195 #define WHITE 31 /* Match whitespace char */ | |
196 #define NWHITE 32 /* Match non-whitespace char */ | |
197 #define DIGIT 33 /* Match digit char */ | |
198 #define NDIGIT 34 /* Match non-digit char */ | |
199 #define HEX 35 /* Match hex char */ | |
200 #define NHEX 36 /* Match non-hex char */ | |
201 #define OCTAL 37 /* Match octal char */ | |
202 #define NOCTAL 38 /* Match non-octal char */ | |
203 #define WORD 39 /* Match word char */ | |
204 #define NWORD 40 /* Match non-word char */ | |
205 #define HEAD 41 /* Match head char */ | |
206 #define NHEAD 42 /* Match non-head char */ | |
207 #define ALPHA 43 /* Match alpha char */ | |
208 #define NALPHA 44 /* Match non-alpha char */ | |
209 #define LOWER 45 /* Match lowercase char */ | |
210 #define NLOWER 46 /* Match non-lowercase char */ | |
211 #define UPPER 47 /* Match uppercase char */ | |
212 #define NUPPER 48 /* Match non-uppercase char */ | |
213 #define LAST_NL NUPPER + ADD_NL | |
214 #define WITH_NL(op) ((op) >= FIRST_NL && (op) <= LAST_NL) | |
215 | |
216 #define MOPEN 80 /* -89 Mark this point in input as start of | |
217 * \( subexpr. MOPEN + 0 marks start of | |
218 * match. */ | |
219 #define MCLOSE 90 /* -99 Analogous to MOPEN. MCLOSE + 0 marks | |
220 * end of match. */ | |
221 #define BACKREF 100 /* -109 node Match same string again \1-\9 */ | |
222 | |
223 #ifdef FEAT_SYN_HL | |
224 # define ZOPEN 110 /* -119 Mark this point in input as start of | |
225 * \z( subexpr. */ | |
226 # define ZCLOSE 120 /* -129 Analogous to ZOPEN. */ | |
227 # define ZREF 130 /* -139 node Match external submatch \z1-\z9 */ | |
228 #endif | |
229 | |
230 #define BRACE_COMPLEX 140 /* -149 node Match nodes between m & n times */ | |
231 | |
232 #define NOPEN 150 /* Mark this point in input as start of | |
233 \%( subexpr. */ | |
234 #define NCLOSE 151 /* Analogous to NOPEN. */ | |
235 | |
236 #define MULTIBYTECODE 200 /* mbc Match one multi-byte character */ | |
237 #define RE_BOF 201 /* Match "" at beginning of file. */ | |
238 #define RE_EOF 202 /* Match "" at end of file. */ | |
239 #define CURSOR 203 /* Match location of cursor. */ | |
240 | |
241 #define RE_LNUM 204 /* nr cmp Match line number */ | |
242 #define RE_COL 205 /* nr cmp Match column number */ | |
243 #define RE_VCOL 206 /* nr cmp Match virtual column number */ | |
244 | |
639 | 245 #define RE_MARK 207 /* mark cmp Match mark position */ |
246 #define RE_VISUAL 208 /* Match Visual area */ | |
5901 | 247 #define RE_COMPOSING 209 /* any composing characters */ |
639 | 248 |
7 | 249 /* |
250 * Magic characters have a special meaning, they don't match literally. | |
251 * Magic characters are negative. This separates them from literal characters | |
252 * (possibly multi-byte). Only ASCII characters can be Magic. | |
253 */ | |
254 #define Magic(x) ((int)(x) - 256) | |
255 #define un_Magic(x) ((x) + 256) | |
256 #define is_Magic(x) ((x) < 0) | |
257 | |
258 static int | |
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259 no_Magic(int x) |
7 | 260 { |
261 if (is_Magic(x)) | |
262 return un_Magic(x); | |
263 return x; | |
264 } | |
265 | |
266 static int | |
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267 toggle_Magic(int x) |
7 | 268 { |
269 if (is_Magic(x)) | |
270 return un_Magic(x); | |
271 return Magic(x); | |
272 } | |
273 | |
274 /* | |
275 * The first byte of the regexp internal "program" is actually this magic | |
276 * number; the start node begins in the second byte. It's used to catch the | |
277 * most severe mutilation of the program by the caller. | |
278 */ | |
279 | |
280 #define REGMAGIC 0234 | |
281 | |
282 /* | |
283 * Opcode notes: | |
284 * | |
285 * BRANCH The set of branches constituting a single choice are hooked | |
286 * together with their "next" pointers, since precedence prevents | |
287 * anything being concatenated to any individual branch. The | |
288 * "next" pointer of the last BRANCH in a choice points to the | |
289 * thing following the whole choice. This is also where the | |
290 * final "next" pointer of each individual branch points; each | |
291 * branch starts with the operand node of a BRANCH node. | |
292 * | |
293 * BACK Normal "next" pointers all implicitly point forward; BACK | |
294 * exists to make loop structures possible. | |
295 * | |
296 * STAR,PLUS '=', and complex '*' and '+', are implemented as circular | |
297 * BRANCH structures using BACK. Simple cases (one character | |
298 * per match) are implemented with STAR and PLUS for speed | |
299 * and to minimize recursive plunges. | |
300 * | |
301 * BRACE_LIMITS This is always followed by a BRACE_SIMPLE or BRACE_COMPLEX | |
302 * node, and defines the min and max limits to be used for that | |
303 * node. | |
304 * | |
305 * MOPEN,MCLOSE ...are numbered at compile time. | |
306 * ZOPEN,ZCLOSE ...ditto | |
307 */ | |
308 | |
309 /* | |
310 * A node is one char of opcode followed by two chars of "next" pointer. | |
311 * "Next" pointers are stored as two 8-bit bytes, high order first. The | |
312 * value is a positive offset from the opcode of the node containing it. | |
313 * An operand, if any, simply follows the node. (Note that much of the | |
314 * code generation knows about this implicit relationship.) | |
315 * | |
316 * Using two bytes for the "next" pointer is vast overkill for most things, | |
317 * but allows patterns to get big without disasters. | |
318 */ | |
319 #define OP(p) ((int)*(p)) | |
320 #define NEXT(p) (((*((p) + 1) & 0377) << 8) + (*((p) + 2) & 0377)) | |
321 #define OPERAND(p) ((p) + 3) | |
322 /* Obtain an operand that was stored as four bytes, MSB first. */ | |
323 #define OPERAND_MIN(p) (((long)(p)[3] << 24) + ((long)(p)[4] << 16) \ | |
324 + ((long)(p)[5] << 8) + (long)(p)[6]) | |
325 /* Obtain a second operand stored as four bytes. */ | |
326 #define OPERAND_MAX(p) OPERAND_MIN((p) + 4) | |
327 /* Obtain a second single-byte operand stored after a four bytes operand. */ | |
328 #define OPERAND_CMP(p) (p)[7] | |
329 | |
330 /* | |
331 * Utility definitions. | |
332 */ | |
333 #define UCHARAT(p) ((int)*(char_u *)(p)) | |
334 | |
335 /* Used for an error (down from) vim_regcomp(): give the error message, set | |
336 * rc_did_emsg and return NULL */ | |
653 | 337 #define EMSG_RET_NULL(m) return (EMSG(m), rc_did_emsg = TRUE, (void *)NULL) |
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338 #define IEMSG_RET_NULL(m) return (IEMSG(m), rc_did_emsg = TRUE, (void *)NULL) |
308 | 339 #define EMSG_RET_FAIL(m) return (EMSG(m), rc_did_emsg = TRUE, FAIL) |
4444 | 340 #define EMSG2_RET_NULL(m, c) return (EMSG2((m), (c) ? "" : "\\"), rc_did_emsg = TRUE, (void *)NULL) |
341 #define EMSG2_RET_FAIL(m, c) return (EMSG2((m), (c) ? "" : "\\"), rc_did_emsg = TRUE, FAIL) | |
342 #define EMSG_ONE_RET_NULL EMSG2_RET_NULL(_("E369: invalid item in %s%%[]"), reg_magic == MAGIC_ALL) | |
7 | 343 |
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344 |
7 | 345 #define MAX_LIMIT (32767L << 16L) |
346 | |
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347 static int cstrncmp(char_u *s1, char_u *s2, int *n); |
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348 static char_u *cstrchr(char_u *, int); |
7 | 349 |
4444 | 350 #ifdef BT_REGEXP_DUMP |
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351 static void regdump(char_u *, bt_regprog_T *); |
4444 | 352 #endif |
7 | 353 #ifdef DEBUG |
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354 static char_u *regprop(char_u *); |
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355 #endif |
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356 |
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357 static int re_mult_next(char *what); |
6203 | 358 |
4444 | 359 static char_u e_missingbracket[] = N_("E769: Missing ] after %s["); |
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360 static char_u e_reverse_range[] = N_("E944: Reverse range in character class"); |
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361 #ifdef FEAT_MBYTE |
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362 static char_u e_large_class[] = N_("E945: Range too large in character class"); |
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363 #endif |
4444 | 364 static char_u e_unmatchedpp[] = N_("E53: Unmatched %s%%("); |
365 static char_u e_unmatchedp[] = N_("E54: Unmatched %s("); | |
366 static char_u e_unmatchedpar[] = N_("E55: Unmatched %s)"); | |
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367 #ifdef FEAT_SYN_HL |
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368 static char_u e_z_not_allowed[] = N_("E66: \\z( not allowed here"); |
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369 static char_u e_z1_not_allowed[] = N_("E67: \\z1 - \\z9 not allowed here"); |
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370 #endif |
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371 static char_u e_missing_sb[] = N_("E69: Missing ] after %s%%["); |
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372 static char_u e_empty_sb[] = N_("E70: Empty %s%%[]"); |
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373 static char_u e_recursive[] = N_("E956: Cannot use pattern recursively"); |
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374 |
7 | 375 #define NOT_MULTI 0 |
376 #define MULTI_ONE 1 | |
377 #define MULTI_MULT 2 | |
378 /* | |
379 * Return NOT_MULTI if c is not a "multi" operator. | |
380 * Return MULTI_ONE if c is a single "multi" operator. | |
381 * Return MULTI_MULT if c is a multi "multi" operator. | |
382 */ | |
383 static int | |
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384 re_multi_type(int c) |
7 | 385 { |
386 if (c == Magic('@') || c == Magic('=') || c == Magic('?')) | |
387 return MULTI_ONE; | |
388 if (c == Magic('*') || c == Magic('+') || c == Magic('{')) | |
389 return MULTI_MULT; | |
390 return NOT_MULTI; | |
391 } | |
392 | |
393 /* | |
394 * Flags to be passed up and down. | |
395 */ | |
396 #define HASWIDTH 0x1 /* Known never to match null string. */ | |
397 #define SIMPLE 0x2 /* Simple enough to be STAR/PLUS operand. */ | |
398 #define SPSTART 0x4 /* Starts with * or +. */ | |
399 #define HASNL 0x8 /* Contains some \n. */ | |
400 #define HASLOOKBH 0x10 /* Contains "\@<=" or "\@<!". */ | |
401 #define WORST 0 /* Worst case. */ | |
402 | |
403 /* | |
404 * When regcode is set to this value, code is not emitted and size is computed | |
405 * instead. | |
406 */ | |
407 #define JUST_CALC_SIZE ((char_u *) -1) | |
408 | |
359 | 409 static char_u *reg_prev_sub = NULL; |
410 | |
7 | 411 /* |
412 * REGEXP_INRANGE contains all characters which are always special in a [] | |
413 * range after '\'. | |
414 * REGEXP_ABBR contains all characters which act as abbreviations after '\'. | |
415 * These are: | |
416 * \n - New line (NL). | |
417 * \r - Carriage Return (CR). | |
418 * \t - Tab (TAB). | |
419 * \e - Escape (ESC). | |
420 * \b - Backspace (Ctrl_H). | |
24 | 421 * \d - Character code in decimal, eg \d123 |
422 * \o - Character code in octal, eg \o80 | |
423 * \x - Character code in hex, eg \x4a | |
424 * \u - Multibyte character code, eg \u20ac | |
425 * \U - Long multibyte character code, eg \U12345678 | |
7 | 426 */ |
427 static char_u REGEXP_INRANGE[] = "]^-n\\"; | |
24 | 428 static char_u REGEXP_ABBR[] = "nrtebdoxuU"; |
7 | 429 |
430 /* | |
431 * Translate '\x' to its control character, except "\n", which is Magic. | |
432 */ | |
433 static int | |
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434 backslash_trans(int c) |
7 | 435 { |
436 switch (c) | |
437 { | |
438 case 'r': return CAR; | |
439 case 't': return TAB; | |
440 case 'e': return ESC; | |
441 case 'b': return BS; | |
442 } | |
443 return c; | |
444 } | |
445 | |
446 /* | |
167 | 447 * Check for a character class name "[:name:]". "pp" points to the '['. |
7 | 448 * Returns one of the CLASS_ items. CLASS_NONE means that no item was |
449 * recognized. Otherwise "pp" is advanced to after the item. | |
450 */ | |
451 static int | |
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452 get_char_class(char_u **pp) |
7 | 453 { |
454 static const char *(class_names[]) = | |
455 { | |
456 "alnum:]", | |
457 #define CLASS_ALNUM 0 | |
458 "alpha:]", | |
459 #define CLASS_ALPHA 1 | |
460 "blank:]", | |
461 #define CLASS_BLANK 2 | |
462 "cntrl:]", | |
463 #define CLASS_CNTRL 3 | |
464 "digit:]", | |
465 #define CLASS_DIGIT 4 | |
466 "graph:]", | |
467 #define CLASS_GRAPH 5 | |
468 "lower:]", | |
469 #define CLASS_LOWER 6 | |
470 "print:]", | |
471 #define CLASS_PRINT 7 | |
472 "punct:]", | |
473 #define CLASS_PUNCT 8 | |
474 "space:]", | |
475 #define CLASS_SPACE 9 | |
476 "upper:]", | |
477 #define CLASS_UPPER 10 | |
478 "xdigit:]", | |
479 #define CLASS_XDIGIT 11 | |
480 "tab:]", | |
481 #define CLASS_TAB 12 | |
482 "return:]", | |
483 #define CLASS_RETURN 13 | |
484 "backspace:]", | |
485 #define CLASS_BACKSPACE 14 | |
486 "escape:]", | |
487 #define CLASS_ESCAPE 15 | |
488 }; | |
489 #define CLASS_NONE 99 | |
490 int i; | |
491 | |
492 if ((*pp)[1] == ':') | |
493 { | |
1877 | 494 for (i = 0; i < (int)(sizeof(class_names) / sizeof(*class_names)); ++i) |
7 | 495 if (STRNCMP(*pp + 2, class_names[i], STRLEN(class_names[i])) == 0) |
496 { | |
497 *pp += STRLEN(class_names[i]) + 2; | |
498 return i; | |
499 } | |
500 } | |
501 return CLASS_NONE; | |
502 } | |
503 | |
504 /* | |
505 * Specific version of character class functions. | |
506 * Using a table to keep this fast. | |
507 */ | |
508 static short class_tab[256]; | |
509 | |
510 #define RI_DIGIT 0x01 | |
511 #define RI_HEX 0x02 | |
512 #define RI_OCTAL 0x04 | |
513 #define RI_WORD 0x08 | |
514 #define RI_HEAD 0x10 | |
515 #define RI_ALPHA 0x20 | |
516 #define RI_LOWER 0x40 | |
517 #define RI_UPPER 0x80 | |
518 #define RI_WHITE 0x100 | |
519 | |
520 static void | |
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521 init_class_tab(void) |
7 | 522 { |
523 int i; | |
524 static int done = FALSE; | |
525 | |
526 if (done) | |
527 return; | |
528 | |
529 for (i = 0; i < 256; ++i) | |
530 { | |
531 if (i >= '0' && i <= '7') | |
532 class_tab[i] = RI_DIGIT + RI_HEX + RI_OCTAL + RI_WORD; | |
533 else if (i >= '8' && i <= '9') | |
534 class_tab[i] = RI_DIGIT + RI_HEX + RI_WORD; | |
535 else if (i >= 'a' && i <= 'f') | |
536 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_LOWER; | |
537 #ifdef EBCDIC | |
538 else if ((i >= 'g' && i <= 'i') || (i >= 'j' && i <= 'r') | |
539 || (i >= 's' && i <= 'z')) | |
540 #else | |
541 else if (i >= 'g' && i <= 'z') | |
542 #endif | |
543 class_tab[i] = RI_WORD + RI_HEAD + RI_ALPHA + RI_LOWER; | |
544 else if (i >= 'A' && i <= 'F') | |
545 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
546 #ifdef EBCDIC | |
547 else if ((i >= 'G' && i <= 'I') || ( i >= 'J' && i <= 'R') | |
548 || (i >= 'S' && i <= 'Z')) | |
549 #else | |
550 else if (i >= 'G' && i <= 'Z') | |
551 #endif | |
552 class_tab[i] = RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
553 else if (i == '_') | |
554 class_tab[i] = RI_WORD + RI_HEAD; | |
555 else | |
556 class_tab[i] = 0; | |
557 } | |
558 class_tab[' '] |= RI_WHITE; | |
559 class_tab['\t'] |= RI_WHITE; | |
560 done = TRUE; | |
561 } | |
562 | |
563 #ifdef FEAT_MBYTE | |
564 # define ri_digit(c) (c < 0x100 && (class_tab[c] & RI_DIGIT)) | |
565 # define ri_hex(c) (c < 0x100 && (class_tab[c] & RI_HEX)) | |
566 # define ri_octal(c) (c < 0x100 && (class_tab[c] & RI_OCTAL)) | |
567 # define ri_word(c) (c < 0x100 && (class_tab[c] & RI_WORD)) | |
568 # define ri_head(c) (c < 0x100 && (class_tab[c] & RI_HEAD)) | |
569 # define ri_alpha(c) (c < 0x100 && (class_tab[c] & RI_ALPHA)) | |
570 # define ri_lower(c) (c < 0x100 && (class_tab[c] & RI_LOWER)) | |
571 # define ri_upper(c) (c < 0x100 && (class_tab[c] & RI_UPPER)) | |
572 # define ri_white(c) (c < 0x100 && (class_tab[c] & RI_WHITE)) | |
573 #else | |
574 # define ri_digit(c) (class_tab[c] & RI_DIGIT) | |
575 # define ri_hex(c) (class_tab[c] & RI_HEX) | |
576 # define ri_octal(c) (class_tab[c] & RI_OCTAL) | |
577 # define ri_word(c) (class_tab[c] & RI_WORD) | |
578 # define ri_head(c) (class_tab[c] & RI_HEAD) | |
579 # define ri_alpha(c) (class_tab[c] & RI_ALPHA) | |
580 # define ri_lower(c) (class_tab[c] & RI_LOWER) | |
581 # define ri_upper(c) (class_tab[c] & RI_UPPER) | |
582 # define ri_white(c) (class_tab[c] & RI_WHITE) | |
583 #endif | |
584 | |
585 /* flags for regflags */ | |
586 #define RF_ICASE 1 /* ignore case */ | |
587 #define RF_NOICASE 2 /* don't ignore case */ | |
588 #define RF_HASNL 4 /* can match a NL */ | |
589 #define RF_ICOMBINE 8 /* ignore combining characters */ | |
590 #define RF_LOOKBH 16 /* uses "\@<=" or "\@<!" */ | |
591 | |
592 /* | |
593 * Global work variables for vim_regcomp(). | |
594 */ | |
595 | |
596 static char_u *regparse; /* Input-scan pointer. */ | |
597 static int prevchr_len; /* byte length of previous char */ | |
598 static int num_complex_braces; /* Complex \{...} count */ | |
599 static int regnpar; /* () count. */ | |
600 #ifdef FEAT_SYN_HL | |
601 static int regnzpar; /* \z() count. */ | |
602 static int re_has_z; /* \z item detected */ | |
603 #endif | |
604 static char_u *regcode; /* Code-emit pointer, or JUST_CALC_SIZE */ | |
605 static long regsize; /* Code size. */ | |
2010 | 606 static int reg_toolong; /* TRUE when offset out of range */ |
7 | 607 static char_u had_endbrace[NSUBEXP]; /* flags, TRUE if end of () found */ |
608 static unsigned regflags; /* RF_ flags for prog */ | |
609 static long brace_min[10]; /* Minimums for complex brace repeats */ | |
610 static long brace_max[10]; /* Maximums for complex brace repeats */ | |
611 static int brace_count[10]; /* Current counts for complex brace repeats */ | |
612 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
613 static int had_eol; /* TRUE when EOL found by vim_regcomp() */ | |
614 #endif | |
615 static int one_exactly = FALSE; /* only do one char for EXACTLY */ | |
616 | |
617 static int reg_magic; /* magicness of the pattern: */ | |
618 #define MAGIC_NONE 1 /* "\V" very unmagic */ | |
619 #define MAGIC_OFF 2 /* "\M" or 'magic' off */ | |
620 #define MAGIC_ON 3 /* "\m" or 'magic' */ | |
621 #define MAGIC_ALL 4 /* "\v" very magic */ | |
622 | |
623 static int reg_string; /* matching with a string instead of a buffer | |
624 line */ | |
481 | 625 static int reg_strict; /* "[abc" is illegal */ |
7 | 626 |
627 /* | |
628 * META contains all characters that may be magic, except '^' and '$'. | |
629 */ | |
630 | |
631 #ifdef EBCDIC | |
632 static char_u META[] = "%&()*+.123456789<=>?@ACDFHIKLMOPSUVWX[_acdfhiklmnopsuvwxz{|~"; | |
633 #else | |
634 /* META[] is used often enough to justify turning it into a table. */ | |
635 static char_u META_flags[] = { | |
636 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
637 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
638 /* % & ( ) * + . */ | |
639 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, | |
640 /* 1 2 3 4 5 6 7 8 9 < = > ? */ | |
641 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, | |
642 /* @ A C D F H I K L M O */ | |
643 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, | |
644 /* P S U V W X Z [ _ */ | |
645 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, | |
646 /* a c d f h i k l m n o */ | |
647 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, | |
648 /* p s u v w x z { | ~ */ | |
649 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1 | |
650 }; | |
651 #endif | |
652 | |
4444 | 653 static int curchr; /* currently parsed character */ |
654 /* Previous character. Note: prevchr is sometimes -1 when we are not at the | |
655 * start, eg in /[ ^I]^ the pattern was never found even if it existed, | |
656 * because ^ was taken to be magic -- webb */ | |
657 static int prevchr; | |
658 static int prevprevchr; /* previous-previous character */ | |
659 static int nextchr; /* used for ungetchr() */ | |
7 | 660 |
661 /* arguments for reg() */ | |
662 #define REG_NOPAREN 0 /* toplevel reg() */ | |
663 #define REG_PAREN 1 /* \(\) */ | |
664 #define REG_ZPAREN 2 /* \z(\) */ | |
665 #define REG_NPAREN 3 /* \%(\) */ | |
666 | |
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667 typedef struct |
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668 { |
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669 char_u *regparse; |
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670 int prevchr_len; |
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671 int curchr; |
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672 int prevchr; |
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673 int prevprevchr; |
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674 int nextchr; |
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675 int at_start; |
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676 int prev_at_start; |
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677 int regnpar; |
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678 } parse_state_T; |
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679 |
7 | 680 /* |
681 * Forward declarations for vim_regcomp()'s friends. | |
682 */ | |
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683 static void initchr(char_u *); |
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684 static int getchr(void); |
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685 static void skipchr_keepstart(void); |
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686 static int peekchr(void); |
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687 static void skipchr(void); |
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688 static void ungetchr(void); |
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689 static long gethexchrs(int maxinputlen); |
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690 static long getoctchrs(void); |
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691 static long getdecchrs(void); |
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692 static int coll_get_char(void); |
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693 static void regcomp_start(char_u *expr, int flags); |
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694 static char_u *reg(int, int *); |
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695 static char_u *regbranch(int *flagp); |
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696 static char_u *regconcat(int *flagp); |
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697 static char_u *regpiece(int *); |
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698 static char_u *regatom(int *); |
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699 static char_u *regnode(int); |
714 | 700 #ifdef FEAT_MBYTE |
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701 static int use_multibytecode(int c); |
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702 #endif |
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703 static int prog_magic_wrong(void); |
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704 static char_u *regnext(char_u *); |
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705 static void regc(int b); |
7 | 706 #ifdef FEAT_MBYTE |
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707 static void regmbc(int c); |
2974 | 708 # define REGMBC(x) regmbc(x); |
709 # define CASEMBC(x) case x: | |
167 | 710 #else |
711 # define regmbc(c) regc(c) | |
2974 | 712 # define REGMBC(x) |
713 # define CASEMBC(x) | |
7 | 714 #endif |
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715 static void reginsert(int, char_u *); |
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716 static void reginsert_nr(int op, long val, char_u *opnd); |
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717 static void reginsert_limits(int, long, long, char_u *); |
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718 static char_u *re_put_long(char_u *pr, long_u val); |
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719 static int read_limits(long *, long *); |
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720 static void regtail(char_u *, char_u *); |
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721 static void regoptail(char_u *, char_u *); |
7 | 722 |
4444 | 723 static regengine_T bt_regengine; |
724 static regengine_T nfa_regengine; | |
725 | |
7 | 726 /* |
727 * Return TRUE if compiled regular expression "prog" can match a line break. | |
728 */ | |
729 int | |
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730 re_multiline(regprog_T *prog) |
7 | 731 { |
732 return (prog->regflags & RF_HASNL); | |
733 } | |
734 | |
735 /* | |
736 * Return TRUE if compiled regular expression "prog" looks before the start | |
737 * position (pattern contains "\@<=" or "\@<!"). | |
738 */ | |
739 int | |
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740 re_lookbehind(regprog_T *prog) |
7 | 741 { |
742 return (prog->regflags & RF_LOOKBH); | |
743 } | |
744 | |
745 /* | |
167 | 746 * Check for an equivalence class name "[=a=]". "pp" points to the '['. |
747 * Returns a character representing the class. Zero means that no item was | |
748 * recognized. Otherwise "pp" is advanced to after the item. | |
749 */ | |
750 static int | |
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751 get_equi_class(char_u **pp) |
167 | 752 { |
753 int c; | |
754 int l = 1; | |
755 char_u *p = *pp; | |
756 | |
757 if (p[1] == '=') | |
758 { | |
759 #ifdef FEAT_MBYTE | |
760 if (has_mbyte) | |
474 | 761 l = (*mb_ptr2len)(p + 2); |
167 | 762 #endif |
763 if (p[l + 2] == '=' && p[l + 3] == ']') | |
764 { | |
765 #ifdef FEAT_MBYTE | |
766 if (has_mbyte) | |
767 c = mb_ptr2char(p + 2); | |
768 else | |
769 #endif | |
770 c = p[2]; | |
771 *pp += l + 4; | |
772 return c; | |
773 } | |
774 } | |
775 return 0; | |
776 } | |
777 | |
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778 #ifdef EBCDIC |
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779 /* |
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780 * Table for equivalence class "c". (IBM-1047) |
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781 */ |
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782 char *EQUIVAL_CLASS_C[16] = { |
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783 "A\x62\x63\x64\x65\x66\x67", |
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784 "C\x68", |
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785 "E\x71\x72\x73\x74", |
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786 "I\x75\x76\x77\x78", |
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787 "N\x69", |
8825
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788 "O\xEB\xEC\xED\xEE\xEF\x80", |
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789 "U\xFB\xFC\xFD\xFE", |
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790 "Y\xBA", |
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791 "a\x42\x43\x44\x45\x46\x47", |
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792 "c\x48", |
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793 "e\x51\x52\x53\x54", |
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794 "i\x55\x56\x57\x58", |
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795 "n\x49", |
8825
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796 "o\xCB\xCC\xCD\xCE\xCF\x70", |
2247
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797 "u\xDB\xDC\xDD\xDE", |
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798 "y\x8D\xDF", |
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799 }; |
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800 #endif |
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801 |
167 | 802 /* |
803 * Produce the bytes for equivalence class "c". | |
804 * Currently only handles latin1, latin9 and utf-8. | |
4444 | 805 * NOTE: When changing this function, also change nfa_emit_equi_class() |
167 | 806 */ |
807 static void | |
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808 reg_equi_class(int c) |
167 | 809 { |
810 #ifdef FEAT_MBYTE | |
811 if (enc_utf8 || STRCMP(p_enc, "latin1") == 0 | |
492 | 812 || STRCMP(p_enc, "iso-8859-15") == 0) |
167 | 813 #endif |
814 { | |
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815 #ifdef EBCDIC |
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816 int i; |
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817 |
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818 /* This might be slower than switch/case below. */ |
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819 for (i = 0; i < 16; i++) |
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820 { |
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821 if (vim_strchr(EQUIVAL_CLASS_C[i], c) != NULL) |
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822 { |
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823 char *p = EQUIVAL_CLASS_C[i]; |
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824 |
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825 while (*p != 0) |
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826 regmbc(*p++); |
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827 return; |
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828 } |
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829 } |
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830 #else |
167 | 831 switch (c) |
832 { | |
6765 | 833 /* Do not use '\300' style, it results in a negative number. */ |
834 case 'A': case 0xc0: case 0xc1: case 0xc2: | |
835 case 0xc3: case 0xc4: case 0xc5: | |
2974 | 836 CASEMBC(0x100) CASEMBC(0x102) CASEMBC(0x104) CASEMBC(0x1cd) |
837 CASEMBC(0x1de) CASEMBC(0x1e0) CASEMBC(0x1ea2) | |
6765 | 838 regmbc('A'); regmbc(0xc0); regmbc(0xc1); |
839 regmbc(0xc2); regmbc(0xc3); regmbc(0xc4); | |
840 regmbc(0xc5); | |
2974 | 841 REGMBC(0x100) REGMBC(0x102) REGMBC(0x104) |
842 REGMBC(0x1cd) REGMBC(0x1de) REGMBC(0x1e0) | |
843 REGMBC(0x1ea2) | |
844 return; | |
845 case 'B': CASEMBC(0x1e02) CASEMBC(0x1e06) | |
846 regmbc('B'); REGMBC(0x1e02) REGMBC(0x1e06) | |
167 | 847 return; |
6765 | 848 case 'C': case 0xc7: |
2974 | 849 CASEMBC(0x106) CASEMBC(0x108) CASEMBC(0x10a) CASEMBC(0x10c) |
6765 | 850 regmbc('C'); regmbc(0xc7); |
2974 | 851 REGMBC(0x106) REGMBC(0x108) REGMBC(0x10a) |
852 REGMBC(0x10c) | |
853 return; | |
854 case 'D': CASEMBC(0x10e) CASEMBC(0x110) CASEMBC(0x1e0a) | |
855 CASEMBC(0x1e0e) CASEMBC(0x1e10) | |
856 regmbc('D'); REGMBC(0x10e) REGMBC(0x110) | |
857 REGMBC(0x1e0a) REGMBC(0x1e0e) REGMBC(0x1e10) | |
167 | 858 return; |
6765 | 859 case 'E': case 0xc8: case 0xc9: case 0xca: case 0xcb: |
2974 | 860 CASEMBC(0x112) CASEMBC(0x114) CASEMBC(0x116) CASEMBC(0x118) |
861 CASEMBC(0x11a) CASEMBC(0x1eba) CASEMBC(0x1ebc) | |
6765 | 862 regmbc('E'); regmbc(0xc8); regmbc(0xc9); |
863 regmbc(0xca); regmbc(0xcb); | |
2974 | 864 REGMBC(0x112) REGMBC(0x114) REGMBC(0x116) |
865 REGMBC(0x118) REGMBC(0x11a) REGMBC(0x1eba) | |
866 REGMBC(0x1ebc) | |
867 return; | |
868 case 'F': CASEMBC(0x1e1e) | |
869 regmbc('F'); REGMBC(0x1e1e) | |
870 return; | |
871 case 'G': CASEMBC(0x11c) CASEMBC(0x11e) CASEMBC(0x120) | |
872 CASEMBC(0x122) CASEMBC(0x1e4) CASEMBC(0x1e6) CASEMBC(0x1f4) | |
873 CASEMBC(0x1e20) | |
874 regmbc('G'); REGMBC(0x11c) REGMBC(0x11e) | |
875 REGMBC(0x120) REGMBC(0x122) REGMBC(0x1e4) | |
876 REGMBC(0x1e6) REGMBC(0x1f4) REGMBC(0x1e20) | |
877 return; | |
878 case 'H': CASEMBC(0x124) CASEMBC(0x126) CASEMBC(0x1e22) | |
879 CASEMBC(0x1e26) CASEMBC(0x1e28) | |
880 regmbc('H'); REGMBC(0x124) REGMBC(0x126) | |
881 REGMBC(0x1e22) REGMBC(0x1e26) REGMBC(0x1e28) | |
167 | 882 return; |
6765 | 883 case 'I': case 0xcc: case 0xcd: case 0xce: case 0xcf: |
2974 | 884 CASEMBC(0x128) CASEMBC(0x12a) CASEMBC(0x12c) CASEMBC(0x12e) |
885 CASEMBC(0x130) CASEMBC(0x1cf) CASEMBC(0x1ec8) | |
6765 | 886 regmbc('I'); regmbc(0xcc); regmbc(0xcd); |
887 regmbc(0xce); regmbc(0xcf); | |
2974 | 888 REGMBC(0x128) REGMBC(0x12a) REGMBC(0x12c) |
889 REGMBC(0x12e) REGMBC(0x130) REGMBC(0x1cf) | |
890 REGMBC(0x1ec8) | |
891 return; | |
892 case 'J': CASEMBC(0x134) | |
893 regmbc('J'); REGMBC(0x134) | |
894 return; | |
895 case 'K': CASEMBC(0x136) CASEMBC(0x1e8) CASEMBC(0x1e30) | |
896 CASEMBC(0x1e34) | |
897 regmbc('K'); REGMBC(0x136) REGMBC(0x1e8) | |
898 REGMBC(0x1e30) REGMBC(0x1e34) | |
899 return; | |
900 case 'L': CASEMBC(0x139) CASEMBC(0x13b) CASEMBC(0x13d) | |
901 CASEMBC(0x13f) CASEMBC(0x141) CASEMBC(0x1e3a) | |
902 regmbc('L'); REGMBC(0x139) REGMBC(0x13b) | |
903 REGMBC(0x13d) REGMBC(0x13f) REGMBC(0x141) | |
904 REGMBC(0x1e3a) | |
905 return; | |
906 case 'M': CASEMBC(0x1e3e) CASEMBC(0x1e40) | |
907 regmbc('M'); REGMBC(0x1e3e) REGMBC(0x1e40) | |
167 | 908 return; |
6765 | 909 case 'N': case 0xd1: |
2974 | 910 CASEMBC(0x143) CASEMBC(0x145) CASEMBC(0x147) CASEMBC(0x1e44) |
911 CASEMBC(0x1e48) | |
6765 | 912 regmbc('N'); regmbc(0xd1); |
2974 | 913 REGMBC(0x143) REGMBC(0x145) REGMBC(0x147) |
914 REGMBC(0x1e44) REGMBC(0x1e48) | |
167 | 915 return; |
6765 | 916 case 'O': case 0xd2: case 0xd3: case 0xd4: case 0xd5: |
917 case 0xd6: case 0xd8: | |
2974 | 918 CASEMBC(0x14c) CASEMBC(0x14e) CASEMBC(0x150) CASEMBC(0x1a0) |
919 CASEMBC(0x1d1) CASEMBC(0x1ea) CASEMBC(0x1ec) CASEMBC(0x1ece) | |
6765 | 920 regmbc('O'); regmbc(0xd2); regmbc(0xd3); |
921 regmbc(0xd4); regmbc(0xd5); regmbc(0xd6); | |
922 regmbc(0xd8); | |
2974 | 923 REGMBC(0x14c) REGMBC(0x14e) REGMBC(0x150) |
924 REGMBC(0x1a0) REGMBC(0x1d1) REGMBC(0x1ea) | |
925 REGMBC(0x1ec) REGMBC(0x1ece) | |
926 return; | |
927 case 'P': case 0x1e54: case 0x1e56: | |
928 regmbc('P'); REGMBC(0x1e54) REGMBC(0x1e56) | |
929 return; | |
930 case 'R': CASEMBC(0x154) CASEMBC(0x156) CASEMBC(0x158) | |
931 CASEMBC(0x1e58) CASEMBC(0x1e5e) | |
932 regmbc('R'); REGMBC(0x154) REGMBC(0x156) REGMBC(0x158) | |
933 REGMBC(0x1e58) REGMBC(0x1e5e) | |
934 return; | |
935 case 'S': CASEMBC(0x15a) CASEMBC(0x15c) CASEMBC(0x15e) | |
936 CASEMBC(0x160) CASEMBC(0x1e60) | |
937 regmbc('S'); REGMBC(0x15a) REGMBC(0x15c) | |
938 REGMBC(0x15e) REGMBC(0x160) REGMBC(0x1e60) | |
939 return; | |
940 case 'T': CASEMBC(0x162) CASEMBC(0x164) CASEMBC(0x166) | |
941 CASEMBC(0x1e6a) CASEMBC(0x1e6e) | |
942 regmbc('T'); REGMBC(0x162) REGMBC(0x164) | |
943 REGMBC(0x166) REGMBC(0x1e6a) REGMBC(0x1e6e) | |
167 | 944 return; |
6765 | 945 case 'U': case 0xd9: case 0xda: case 0xdb: case 0xdc: |
2974 | 946 CASEMBC(0x168) CASEMBC(0x16a) CASEMBC(0x16c) CASEMBC(0x16e) |
947 CASEMBC(0x170) CASEMBC(0x172) CASEMBC(0x1af) CASEMBC(0x1d3) | |
948 CASEMBC(0x1ee6) | |
6765 | 949 regmbc('U'); regmbc(0xd9); regmbc(0xda); |
950 regmbc(0xdb); regmbc(0xdc); | |
2974 | 951 REGMBC(0x168) REGMBC(0x16a) REGMBC(0x16c) |
952 REGMBC(0x16e) REGMBC(0x170) REGMBC(0x172) | |
953 REGMBC(0x1af) REGMBC(0x1d3) REGMBC(0x1ee6) | |
954 return; | |
955 case 'V': CASEMBC(0x1e7c) | |
956 regmbc('V'); REGMBC(0x1e7c) | |
957 return; | |
958 case 'W': CASEMBC(0x174) CASEMBC(0x1e80) CASEMBC(0x1e82) | |
959 CASEMBC(0x1e84) CASEMBC(0x1e86) | |
960 regmbc('W'); REGMBC(0x174) REGMBC(0x1e80) | |
961 REGMBC(0x1e82) REGMBC(0x1e84) REGMBC(0x1e86) | |
962 return; | |
963 case 'X': CASEMBC(0x1e8a) CASEMBC(0x1e8c) | |
964 regmbc('X'); REGMBC(0x1e8a) REGMBC(0x1e8c) | |
167 | 965 return; |
6765 | 966 case 'Y': case 0xdd: |
2974 | 967 CASEMBC(0x176) CASEMBC(0x178) CASEMBC(0x1e8e) CASEMBC(0x1ef2) |
968 CASEMBC(0x1ef6) CASEMBC(0x1ef8) | |
6765 | 969 regmbc('Y'); regmbc(0xdd); |
2974 | 970 REGMBC(0x176) REGMBC(0x178) REGMBC(0x1e8e) |
971 REGMBC(0x1ef2) REGMBC(0x1ef6) REGMBC(0x1ef8) | |
972 return; | |
973 case 'Z': CASEMBC(0x179) CASEMBC(0x17b) CASEMBC(0x17d) | |
974 CASEMBC(0x1b5) CASEMBC(0x1e90) CASEMBC(0x1e94) | |
975 regmbc('Z'); REGMBC(0x179) REGMBC(0x17b) | |
976 REGMBC(0x17d) REGMBC(0x1b5) REGMBC(0x1e90) | |
977 REGMBC(0x1e94) | |
167 | 978 return; |
6765 | 979 case 'a': case 0xe0: case 0xe1: case 0xe2: |
980 case 0xe3: case 0xe4: case 0xe5: | |
2974 | 981 CASEMBC(0x101) CASEMBC(0x103) CASEMBC(0x105) CASEMBC(0x1ce) |
982 CASEMBC(0x1df) CASEMBC(0x1e1) CASEMBC(0x1ea3) | |
6765 | 983 regmbc('a'); regmbc(0xe0); regmbc(0xe1); |
984 regmbc(0xe2); regmbc(0xe3); regmbc(0xe4); | |
985 regmbc(0xe5); | |
2974 | 986 REGMBC(0x101) REGMBC(0x103) REGMBC(0x105) |
987 REGMBC(0x1ce) REGMBC(0x1df) REGMBC(0x1e1) | |
988 REGMBC(0x1ea3) | |
989 return; | |
990 case 'b': CASEMBC(0x1e03) CASEMBC(0x1e07) | |
991 regmbc('b'); REGMBC(0x1e03) REGMBC(0x1e07) | |
167 | 992 return; |
6765 | 993 case 'c': case 0xe7: |
2974 | 994 CASEMBC(0x107) CASEMBC(0x109) CASEMBC(0x10b) CASEMBC(0x10d) |
6765 | 995 regmbc('c'); regmbc(0xe7); |
2974 | 996 REGMBC(0x107) REGMBC(0x109) REGMBC(0x10b) |
997 REGMBC(0x10d) | |
998 return; | |
6914 | 999 case 'd': CASEMBC(0x10f) CASEMBC(0x111) CASEMBC(0x1e0b) |
1000 CASEMBC(0x1e0f) CASEMBC(0x1e11) | |
2974 | 1001 regmbc('d'); REGMBC(0x10f) REGMBC(0x111) |
6914 | 1002 REGMBC(0x1e0b) REGMBC(0x1e0f) REGMBC(0x1e11) |
167 | 1003 return; |
6765 | 1004 case 'e': case 0xe8: case 0xe9: case 0xea: case 0xeb: |
2974 | 1005 CASEMBC(0x113) CASEMBC(0x115) CASEMBC(0x117) CASEMBC(0x119) |
1006 CASEMBC(0x11b) CASEMBC(0x1ebb) CASEMBC(0x1ebd) | |
6765 | 1007 regmbc('e'); regmbc(0xe8); regmbc(0xe9); |
1008 regmbc(0xea); regmbc(0xeb); | |
2974 | 1009 REGMBC(0x113) REGMBC(0x115) REGMBC(0x117) |
1010 REGMBC(0x119) REGMBC(0x11b) REGMBC(0x1ebb) | |
1011 REGMBC(0x1ebd) | |
1012 return; | |
1013 case 'f': CASEMBC(0x1e1f) | |
1014 regmbc('f'); REGMBC(0x1e1f) | |
1015 return; | |
1016 case 'g': CASEMBC(0x11d) CASEMBC(0x11f) CASEMBC(0x121) | |
1017 CASEMBC(0x123) CASEMBC(0x1e5) CASEMBC(0x1e7) CASEMBC(0x1f5) | |
1018 CASEMBC(0x1e21) | |
1019 regmbc('g'); REGMBC(0x11d) REGMBC(0x11f) | |
1020 REGMBC(0x121) REGMBC(0x123) REGMBC(0x1e5) | |
1021 REGMBC(0x1e7) REGMBC(0x1f5) REGMBC(0x1e21) | |
1022 return; | |
1023 case 'h': CASEMBC(0x125) CASEMBC(0x127) CASEMBC(0x1e23) | |
1024 CASEMBC(0x1e27) CASEMBC(0x1e29) CASEMBC(0x1e96) | |
1025 regmbc('h'); REGMBC(0x125) REGMBC(0x127) | |
1026 REGMBC(0x1e23) REGMBC(0x1e27) REGMBC(0x1e29) | |
1027 REGMBC(0x1e96) | |
167 | 1028 return; |
6765 | 1029 case 'i': case 0xec: case 0xed: case 0xee: case 0xef: |
2974 | 1030 CASEMBC(0x129) CASEMBC(0x12b) CASEMBC(0x12d) CASEMBC(0x12f) |
1031 CASEMBC(0x1d0) CASEMBC(0x1ec9) | |
6765 | 1032 regmbc('i'); regmbc(0xec); regmbc(0xed); |
1033 regmbc(0xee); regmbc(0xef); | |
2974 | 1034 REGMBC(0x129) REGMBC(0x12b) REGMBC(0x12d) |
1035 REGMBC(0x12f) REGMBC(0x1d0) REGMBC(0x1ec9) | |
1036 return; | |
1037 case 'j': CASEMBC(0x135) CASEMBC(0x1f0) | |
1038 regmbc('j'); REGMBC(0x135) REGMBC(0x1f0) | |
1039 return; | |
1040 case 'k': CASEMBC(0x137) CASEMBC(0x1e9) CASEMBC(0x1e31) | |
1041 CASEMBC(0x1e35) | |
1042 regmbc('k'); REGMBC(0x137) REGMBC(0x1e9) | |
1043 REGMBC(0x1e31) REGMBC(0x1e35) | |
1044 return; | |
1045 case 'l': CASEMBC(0x13a) CASEMBC(0x13c) CASEMBC(0x13e) | |
1046 CASEMBC(0x140) CASEMBC(0x142) CASEMBC(0x1e3b) | |
1047 regmbc('l'); REGMBC(0x13a) REGMBC(0x13c) | |
1048 REGMBC(0x13e) REGMBC(0x140) REGMBC(0x142) | |
1049 REGMBC(0x1e3b) | |
1050 return; | |
1051 case 'm': CASEMBC(0x1e3f) CASEMBC(0x1e41) | |
1052 regmbc('m'); REGMBC(0x1e3f) REGMBC(0x1e41) | |
167 | 1053 return; |
6765 | 1054 case 'n': case 0xf1: |
2974 | 1055 CASEMBC(0x144) CASEMBC(0x146) CASEMBC(0x148) CASEMBC(0x149) |
1056 CASEMBC(0x1e45) CASEMBC(0x1e49) | |
6765 | 1057 regmbc('n'); regmbc(0xf1); |
2974 | 1058 REGMBC(0x144) REGMBC(0x146) REGMBC(0x148) |
1059 REGMBC(0x149) REGMBC(0x1e45) REGMBC(0x1e49) | |
167 | 1060 return; |
6765 | 1061 case 'o': case 0xf2: case 0xf3: case 0xf4: case 0xf5: |
1062 case 0xf6: case 0xf8: | |
2974 | 1063 CASEMBC(0x14d) CASEMBC(0x14f) CASEMBC(0x151) CASEMBC(0x1a1) |
1064 CASEMBC(0x1d2) CASEMBC(0x1eb) CASEMBC(0x1ed) CASEMBC(0x1ecf) | |
6765 | 1065 regmbc('o'); regmbc(0xf2); regmbc(0xf3); |
1066 regmbc(0xf4); regmbc(0xf5); regmbc(0xf6); | |
1067 regmbc(0xf8); | |
2974 | 1068 REGMBC(0x14d) REGMBC(0x14f) REGMBC(0x151) |
1069 REGMBC(0x1a1) REGMBC(0x1d2) REGMBC(0x1eb) | |
1070 REGMBC(0x1ed) REGMBC(0x1ecf) | |
1071 return; | |
1072 case 'p': CASEMBC(0x1e55) CASEMBC(0x1e57) | |
1073 regmbc('p'); REGMBC(0x1e55) REGMBC(0x1e57) | |
1074 return; | |
1075 case 'r': CASEMBC(0x155) CASEMBC(0x157) CASEMBC(0x159) | |
1076 CASEMBC(0x1e59) CASEMBC(0x1e5f) | |
1077 regmbc('r'); REGMBC(0x155) REGMBC(0x157) REGMBC(0x159) | |
1078 REGMBC(0x1e59) REGMBC(0x1e5f) | |
1079 return; | |
1080 case 's': CASEMBC(0x15b) CASEMBC(0x15d) CASEMBC(0x15f) | |
1081 CASEMBC(0x161) CASEMBC(0x1e61) | |
1082 regmbc('s'); REGMBC(0x15b) REGMBC(0x15d) | |
1083 REGMBC(0x15f) REGMBC(0x161) REGMBC(0x1e61) | |
1084 return; | |
1085 case 't': CASEMBC(0x163) CASEMBC(0x165) CASEMBC(0x167) | |
1086 CASEMBC(0x1e6b) CASEMBC(0x1e6f) CASEMBC(0x1e97) | |
1087 regmbc('t'); REGMBC(0x163) REGMBC(0x165) REGMBC(0x167) | |
1088 REGMBC(0x1e6b) REGMBC(0x1e6f) REGMBC(0x1e97) | |
167 | 1089 return; |
6765 | 1090 case 'u': case 0xf9: case 0xfa: case 0xfb: case 0xfc: |
2974 | 1091 CASEMBC(0x169) CASEMBC(0x16b) CASEMBC(0x16d) CASEMBC(0x16f) |
1092 CASEMBC(0x171) CASEMBC(0x173) CASEMBC(0x1b0) CASEMBC(0x1d4) | |
1093 CASEMBC(0x1ee7) | |
6765 | 1094 regmbc('u'); regmbc(0xf9); regmbc(0xfa); |
1095 regmbc(0xfb); regmbc(0xfc); | |
2974 | 1096 REGMBC(0x169) REGMBC(0x16b) REGMBC(0x16d) |
1097 REGMBC(0x16f) REGMBC(0x171) REGMBC(0x173) | |
1098 REGMBC(0x1b0) REGMBC(0x1d4) REGMBC(0x1ee7) | |
1099 return; | |
1100 case 'v': CASEMBC(0x1e7d) | |
1101 regmbc('v'); REGMBC(0x1e7d) | |
1102 return; | |
1103 case 'w': CASEMBC(0x175) CASEMBC(0x1e81) CASEMBC(0x1e83) | |
1104 CASEMBC(0x1e85) CASEMBC(0x1e87) CASEMBC(0x1e98) | |
1105 regmbc('w'); REGMBC(0x175) REGMBC(0x1e81) | |
1106 REGMBC(0x1e83) REGMBC(0x1e85) REGMBC(0x1e87) | |
1107 REGMBC(0x1e98) | |
1108 return; | |
1109 case 'x': CASEMBC(0x1e8b) CASEMBC(0x1e8d) | |
1110 regmbc('x'); REGMBC(0x1e8b) REGMBC(0x1e8d) | |
167 | 1111 return; |
6765 | 1112 case 'y': case 0xfd: case 0xff: |
2974 | 1113 CASEMBC(0x177) CASEMBC(0x1e8f) CASEMBC(0x1e99) |
1114 CASEMBC(0x1ef3) CASEMBC(0x1ef7) CASEMBC(0x1ef9) | |
6765 | 1115 regmbc('y'); regmbc(0xfd); regmbc(0xff); |
2974 | 1116 REGMBC(0x177) REGMBC(0x1e8f) REGMBC(0x1e99) |
1117 REGMBC(0x1ef3) REGMBC(0x1ef7) REGMBC(0x1ef9) | |
1118 return; | |
1119 case 'z': CASEMBC(0x17a) CASEMBC(0x17c) CASEMBC(0x17e) | |
1120 CASEMBC(0x1b6) CASEMBC(0x1e91) CASEMBC(0x1e95) | |
1121 regmbc('z'); REGMBC(0x17a) REGMBC(0x17c) | |
1122 REGMBC(0x17e) REGMBC(0x1b6) REGMBC(0x1e91) | |
1123 REGMBC(0x1e95) | |
167 | 1124 return; |
1125 } | |
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1126 #endif |
167 | 1127 } |
1128 regmbc(c); | |
1129 } | |
1130 | |
1131 /* | |
1132 * Check for a collating element "[.a.]". "pp" points to the '['. | |
1133 * Returns a character. Zero means that no item was recognized. Otherwise | |
1134 * "pp" is advanced to after the item. | |
1135 * Currently only single characters are recognized! | |
1136 */ | |
1137 static int | |
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1138 get_coll_element(char_u **pp) |
167 | 1139 { |
1140 int c; | |
1141 int l = 1; | |
1142 char_u *p = *pp; | |
1143 | |
6830 | 1144 if (p[0] != NUL && p[1] == '.') |
167 | 1145 { |
1146 #ifdef FEAT_MBYTE | |
1147 if (has_mbyte) | |
474 | 1148 l = (*mb_ptr2len)(p + 2); |
167 | 1149 #endif |
1150 if (p[l + 2] == '.' && p[l + 3] == ']') | |
1151 { | |
1152 #ifdef FEAT_MBYTE | |
1153 if (has_mbyte) | |
1154 c = mb_ptr2char(p + 2); | |
1155 else | |
1156 #endif | |
1157 c = p[2]; | |
1158 *pp += l + 4; | |
1159 return c; | |
1160 } | |
1161 } | |
1162 return 0; | |
1163 } | |
1164 | |
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1165 static int reg_cpo_lit; /* 'cpoptions' contains 'l' flag */ |
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1166 static int reg_cpo_bsl; /* 'cpoptions' contains '\' flag */ |
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1167 |
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1168 static void |
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1169 get_cpo_flags(void) |
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1170 { |
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1171 reg_cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; |
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1172 reg_cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; |
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1173 } |
167 | 1174 |
1175 /* | |
1176 * Skip over a "[]" range. | |
1177 * "p" must point to the character after the '['. | |
1178 * The returned pointer is on the matching ']', or the terminating NUL. | |
1179 */ | |
1180 static char_u * | |
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1181 skip_anyof(char_u *p) |
167 | 1182 { |
1183 #ifdef FEAT_MBYTE | |
1184 int l; | |
1185 #endif | |
1186 | |
1187 if (*p == '^') /* Complement of range. */ | |
1188 ++p; | |
1189 if (*p == ']' || *p == '-') | |
1190 ++p; | |
1191 while (*p != NUL && *p != ']') | |
1192 { | |
1193 #ifdef FEAT_MBYTE | |
474 | 1194 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
167 | 1195 p += l; |
1196 else | |
1197 #endif | |
1198 if (*p == '-') | |
1199 { | |
1200 ++p; | |
1201 if (*p != ']' && *p != NUL) | |
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1202 MB_PTR_ADV(p); |
167 | 1203 } |
1204 else if (*p == '\\' | |
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1205 && !reg_cpo_bsl |
167 | 1206 && (vim_strchr(REGEXP_INRANGE, p[1]) != NULL |
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1207 || (!reg_cpo_lit && vim_strchr(REGEXP_ABBR, p[1]) != NULL))) |
167 | 1208 p += 2; |
1209 else if (*p == '[') | |
1210 { | |
1211 if (get_char_class(&p) == CLASS_NONE | |
1212 && get_equi_class(&p) == 0 | |
6830 | 1213 && get_coll_element(&p) == 0 |
1214 && *p != NUL) | |
1215 ++p; /* it is not a class name and not NUL */ | |
167 | 1216 } |
1217 else | |
1218 ++p; | |
1219 } | |
1220 | |
1221 return p; | |
1222 } | |
1223 | |
1224 /* | |
7 | 1225 * Skip past regular expression. |
153 | 1226 * Stop at end of "startp" or where "dirc" is found ('/', '?', etc). |
7 | 1227 * Take care of characters with a backslash in front of it. |
1228 * Skip strings inside [ and ]. | |
1229 * When "newp" is not NULL and "dirc" is '?', make an allocated copy of the | |
1230 * expression and change "\?" to "?". If "*newp" is not NULL the expression | |
1231 * is changed in-place. | |
1232 */ | |
1233 char_u * | |
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1234 skip_regexp( |
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1235 char_u *startp, |
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1236 int dirc, |
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1237 int magic, |
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1238 char_u **newp) |
7 | 1239 { |
1240 int mymagic; | |
1241 char_u *p = startp; | |
1242 | |
1243 if (magic) | |
1244 mymagic = MAGIC_ON; | |
1245 else | |
1246 mymagic = MAGIC_OFF; | |
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1247 get_cpo_flags(); |
7 | 1248 |
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1249 for (; p[0] != NUL; MB_PTR_ADV(p)) |
7 | 1250 { |
1251 if (p[0] == dirc) /* found end of regexp */ | |
1252 break; | |
1253 if ((p[0] == '[' && mymagic >= MAGIC_ON) | |
1254 || (p[0] == '\\' && p[1] == '[' && mymagic <= MAGIC_OFF)) | |
1255 { | |
1256 p = skip_anyof(p + 1); | |
1257 if (p[0] == NUL) | |
1258 break; | |
1259 } | |
1260 else if (p[0] == '\\' && p[1] != NUL) | |
1261 { | |
1262 if (dirc == '?' && newp != NULL && p[1] == '?') | |
1263 { | |
1264 /* change "\?" to "?", make a copy first. */ | |
1265 if (*newp == NULL) | |
1266 { | |
1267 *newp = vim_strsave(startp); | |
1268 if (*newp != NULL) | |
1269 p = *newp + (p - startp); | |
1270 } | |
1271 if (*newp != NULL) | |
1621 | 1272 STRMOVE(p, p + 1); |
7 | 1273 else |
1274 ++p; | |
1275 } | |
1276 else | |
1277 ++p; /* skip next character */ | |
1278 if (*p == 'v') | |
1279 mymagic = MAGIC_ALL; | |
1280 else if (*p == 'V') | |
1281 mymagic = MAGIC_NONE; | |
1282 } | |
1283 } | |
1284 return p; | |
1285 } | |
1286 | |
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1287 /* |
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1288 * Return TRUE if the back reference is legal. We must have seen the close |
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1289 * brace. |
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1290 * TODO: Should also check that we don't refer to something that is repeated |
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1291 * (+*=): what instance of the repetition should we match? |
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1292 */ |
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1293 static int |
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1294 seen_endbrace(int refnum) |
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1295 { |
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1296 if (!had_endbrace[refnum]) |
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1297 { |
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1298 char_u *p; |
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1299 |
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1300 /* Trick: check if "@<=" or "@<!" follows, in which case |
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1301 * the \1 can appear before the referenced match. */ |
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1302 for (p = regparse; *p != NUL; ++p) |
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1303 if (p[0] == '@' && p[1] == '<' && (p[2] == '!' || p[2] == '=')) |
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1304 break; |
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1305 if (*p == NUL) |
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1306 { |
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1307 EMSG(_("E65: Illegal back reference")); |
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1308 rc_did_emsg = TRUE; |
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1309 return FALSE; |
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1310 } |
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1311 } |
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1312 return TRUE; |
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1313 } |
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1314 |
7 | 1315 /* |
4444 | 1316 * bt_regcomp() - compile a regular expression into internal code for the |
1317 * traditional back track matcher. | |
41 | 1318 * Returns the program in allocated space. Returns NULL for an error. |
7 | 1319 * |
1320 * We can't allocate space until we know how big the compiled form will be, | |
1321 * but we can't compile it (and thus know how big it is) until we've got a | |
1322 * place to put the code. So we cheat: we compile it twice, once with code | |
1323 * generation turned off and size counting turned on, and once "for real". | |
1324 * This also means that we don't allocate space until we are sure that the | |
1325 * thing really will compile successfully, and we never have to move the | |
1326 * code and thus invalidate pointers into it. (Note that it has to be in | |
1327 * one piece because vim_free() must be able to free it all.) | |
1328 * | |
1329 * Whether upper/lower case is to be ignored is decided when executing the | |
1330 * program, it does not matter here. | |
1331 * | |
1332 * Beware that the optimization-preparation code in here knows about some | |
1333 * of the structure of the compiled regexp. | |
1334 * "re_flags": RE_MAGIC and/or RE_STRING. | |
1335 */ | |
4444 | 1336 static regprog_T * |
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1337 bt_regcomp(char_u *expr, int re_flags) |
7 | 1338 { |
4444 | 1339 bt_regprog_T *r; |
7 | 1340 char_u *scan; |
1341 char_u *longest; | |
1342 int len; | |
1343 int flags; | |
1344 | |
1345 if (expr == NULL) | |
1346 EMSG_RET_NULL(_(e_null)); | |
1347 | |
1348 init_class_tab(); | |
1349 | |
1350 /* | |
1351 * First pass: determine size, legality. | |
1352 */ | |
1353 regcomp_start(expr, re_flags); | |
1354 regcode = JUST_CALC_SIZE; | |
1355 regc(REGMAGIC); | |
1356 if (reg(REG_NOPAREN, &flags) == NULL) | |
1357 return NULL; | |
1358 | |
1359 /* Allocate space. */ | |
4444 | 1360 r = (bt_regprog_T *)lalloc(sizeof(bt_regprog_T) + regsize, TRUE); |
7 | 1361 if (r == NULL) |
1362 return NULL; | |
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1363 r->re_in_use = FALSE; |
7 | 1364 |
1365 /* | |
1366 * Second pass: emit code. | |
1367 */ | |
1368 regcomp_start(expr, re_flags); | |
1369 regcode = r->program; | |
1370 regc(REGMAGIC); | |
2010 | 1371 if (reg(REG_NOPAREN, &flags) == NULL || reg_toolong) |
7 | 1372 { |
1373 vim_free(r); | |
2010 | 1374 if (reg_toolong) |
1375 EMSG_RET_NULL(_("E339: Pattern too long")); | |
7 | 1376 return NULL; |
1377 } | |
1378 | |
1379 /* Dig out information for optimizations. */ | |
1380 r->regstart = NUL; /* Worst-case defaults. */ | |
1381 r->reganch = 0; | |
1382 r->regmust = NULL; | |
1383 r->regmlen = 0; | |
1384 r->regflags = regflags; | |
1385 if (flags & HASNL) | |
1386 r->regflags |= RF_HASNL; | |
1387 if (flags & HASLOOKBH) | |
1388 r->regflags |= RF_LOOKBH; | |
1389 #ifdef FEAT_SYN_HL | |
1390 /* Remember whether this pattern has any \z specials in it. */ | |
1391 r->reghasz = re_has_z; | |
1392 #endif | |
1393 scan = r->program + 1; /* First BRANCH. */ | |
1394 if (OP(regnext(scan)) == END) /* Only one top-level choice. */ | |
1395 { | |
1396 scan = OPERAND(scan); | |
1397 | |
1398 /* Starting-point info. */ | |
1399 if (OP(scan) == BOL || OP(scan) == RE_BOF) | |
1400 { | |
1401 r->reganch++; | |
1402 scan = regnext(scan); | |
1403 } | |
1404 | |
1405 if (OP(scan) == EXACTLY) | |
1406 { | |
1407 #ifdef FEAT_MBYTE | |
1408 if (has_mbyte) | |
1409 r->regstart = (*mb_ptr2char)(OPERAND(scan)); | |
1410 else | |
1411 #endif | |
1412 r->regstart = *OPERAND(scan); | |
1413 } | |
1414 else if ((OP(scan) == BOW | |
1415 || OP(scan) == EOW | |
1416 || OP(scan) == NOTHING | |
1417 || OP(scan) == MOPEN + 0 || OP(scan) == NOPEN | |
1418 || OP(scan) == MCLOSE + 0 || OP(scan) == NCLOSE) | |
1419 && OP(regnext(scan)) == EXACTLY) | |
1420 { | |
1421 #ifdef FEAT_MBYTE | |
1422 if (has_mbyte) | |
1423 r->regstart = (*mb_ptr2char)(OPERAND(regnext(scan))); | |
1424 else | |
1425 #endif | |
1426 r->regstart = *OPERAND(regnext(scan)); | |
1427 } | |
1428 | |
1429 /* | |
1430 * If there's something expensive in the r.e., find the longest | |
1431 * literal string that must appear and make it the regmust. Resolve | |
1432 * ties in favor of later strings, since the regstart check works | |
1433 * with the beginning of the r.e. and avoiding duplication | |
1434 * strengthens checking. Not a strong reason, but sufficient in the | |
1435 * absence of others. | |
1436 */ | |
1437 /* | |
1438 * When the r.e. starts with BOW, it is faster to look for a regmust | |
1439 * first. Used a lot for "#" and "*" commands. (Added by mool). | |
1440 */ | |
1441 if ((flags & SPSTART || OP(scan) == BOW || OP(scan) == EOW) | |
1442 && !(flags & HASNL)) | |
1443 { | |
1444 longest = NULL; | |
1445 len = 0; | |
1446 for (; scan != NULL; scan = regnext(scan)) | |
1447 if (OP(scan) == EXACTLY && STRLEN(OPERAND(scan)) >= (size_t)len) | |
1448 { | |
1449 longest = OPERAND(scan); | |
1450 len = (int)STRLEN(OPERAND(scan)); | |
1451 } | |
1452 r->regmust = longest; | |
1453 r->regmlen = len; | |
1454 } | |
1455 } | |
4444 | 1456 #ifdef BT_REGEXP_DUMP |
7 | 1457 regdump(expr, r); |
1458 #endif | |
4444 | 1459 r->engine = &bt_regengine; |
1460 return (regprog_T *)r; | |
7 | 1461 } |
1462 | |
1463 /* | |
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1464 * Free a compiled regexp program, returned by bt_regcomp(). |
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1465 */ |
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1466 static void |
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1467 bt_regfree(regprog_T *prog) |
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1468 { |
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1469 vim_free(prog); |
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1470 } |
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1471 |
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1472 /* |
7 | 1473 * Setup to parse the regexp. Used once to get the length and once to do it. |
1474 */ | |
1475 static void | |
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1476 regcomp_start( |
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1477 char_u *expr, |
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1478 int re_flags) /* see vim_regcomp() */ |
7 | 1479 { |
1480 initchr(expr); | |
1481 if (re_flags & RE_MAGIC) | |
1482 reg_magic = MAGIC_ON; | |
1483 else | |
1484 reg_magic = MAGIC_OFF; | |
1485 reg_string = (re_flags & RE_STRING); | |
481 | 1486 reg_strict = (re_flags & RE_STRICT); |
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1487 get_cpo_flags(); |
7 | 1488 |
1489 num_complex_braces = 0; | |
1490 regnpar = 1; | |
1491 vim_memset(had_endbrace, 0, sizeof(had_endbrace)); | |
1492 #ifdef FEAT_SYN_HL | |
1493 regnzpar = 1; | |
1494 re_has_z = 0; | |
1495 #endif | |
1496 regsize = 0L; | |
2010 | 1497 reg_toolong = FALSE; |
7 | 1498 regflags = 0; |
1499 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
1500 had_eol = FALSE; | |
1501 #endif | |
1502 } | |
1503 | |
1504 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
1505 /* | |
1506 * Check if during the previous call to vim_regcomp the EOL item "$" has been | |
1507 * found. This is messy, but it works fine. | |
1508 */ | |
1509 int | |
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1510 vim_regcomp_had_eol(void) |
7 | 1511 { |
1512 return had_eol; | |
1513 } | |
1514 #endif | |
1515 | |
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1516 // variables used for parsing |
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1517 static int at_start; // True when on the first character |
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1518 static int prev_at_start; // True when on the second character |
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1519 |
7 | 1520 /* |
4444 | 1521 * Parse regular expression, i.e. main body or parenthesized thing. |
7 | 1522 * |
1523 * Caller must absorb opening parenthesis. | |
1524 * | |
1525 * Combining parenthesis handling with the base level of regular expression | |
1526 * is a trifle forced, but the need to tie the tails of the branches to what | |
1527 * follows makes it hard to avoid. | |
1528 */ | |
1529 static char_u * | |
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1530 reg( |
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1531 int paren, /* REG_NOPAREN, REG_PAREN, REG_NPAREN or REG_ZPAREN */ |
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1532 int *flagp) |
7 | 1533 { |
1534 char_u *ret; | |
1535 char_u *br; | |
1536 char_u *ender; | |
1537 int parno = 0; | |
1538 int flags; | |
1539 | |
1540 *flagp = HASWIDTH; /* Tentatively. */ | |
1541 | |
1542 #ifdef FEAT_SYN_HL | |
1543 if (paren == REG_ZPAREN) | |
1544 { | |
1545 /* Make a ZOPEN node. */ | |
1546 if (regnzpar >= NSUBEXP) | |
1547 EMSG_RET_NULL(_("E50: Too many \\z(")); | |
1548 parno = regnzpar; | |
1549 regnzpar++; | |
1550 ret = regnode(ZOPEN + parno); | |
1551 } | |
1552 else | |
1553 #endif | |
1554 if (paren == REG_PAREN) | |
1555 { | |
1556 /* Make a MOPEN node. */ | |
1557 if (regnpar >= NSUBEXP) | |
4444 | 1558 EMSG2_RET_NULL(_("E51: Too many %s("), reg_magic == MAGIC_ALL); |
7 | 1559 parno = regnpar; |
1560 ++regnpar; | |
1561 ret = regnode(MOPEN + parno); | |
1562 } | |
1563 else if (paren == REG_NPAREN) | |
1564 { | |
1565 /* Make a NOPEN node. */ | |
1566 ret = regnode(NOPEN); | |
1567 } | |
1568 else | |
1569 ret = NULL; | |
1570 | |
1571 /* Pick up the branches, linking them together. */ | |
1572 br = regbranch(&flags); | |
1573 if (br == NULL) | |
1574 return NULL; | |
1575 if (ret != NULL) | |
1576 regtail(ret, br); /* [MZ]OPEN -> first. */ | |
1577 else | |
1578 ret = br; | |
1579 /* If one of the branches can be zero-width, the whole thing can. | |
1580 * If one of the branches has * at start or matches a line-break, the | |
1581 * whole thing can. */ | |
1582 if (!(flags & HASWIDTH)) | |
1583 *flagp &= ~HASWIDTH; | |
1584 *flagp |= flags & (SPSTART | HASNL | HASLOOKBH); | |
1585 while (peekchr() == Magic('|')) | |
1586 { | |
1587 skipchr(); | |
1588 br = regbranch(&flags); | |
2010 | 1589 if (br == NULL || reg_toolong) |
7 | 1590 return NULL; |
1591 regtail(ret, br); /* BRANCH -> BRANCH. */ | |
1592 if (!(flags & HASWIDTH)) | |
1593 *flagp &= ~HASWIDTH; | |
1594 *flagp |= flags & (SPSTART | HASNL | HASLOOKBH); | |
1595 } | |
1596 | |
1597 /* Make a closing node, and hook it on the end. */ | |
1598 ender = regnode( | |
1599 #ifdef FEAT_SYN_HL | |
1600 paren == REG_ZPAREN ? ZCLOSE + parno : | |
1601 #endif | |
1602 paren == REG_PAREN ? MCLOSE + parno : | |
1603 paren == REG_NPAREN ? NCLOSE : END); | |
1604 regtail(ret, ender); | |
1605 | |
1606 /* Hook the tails of the branches to the closing node. */ | |
1607 for (br = ret; br != NULL; br = regnext(br)) | |
1608 regoptail(br, ender); | |
1609 | |
1610 /* Check for proper termination. */ | |
1611 if (paren != REG_NOPAREN && getchr() != Magic(')')) | |
1612 { | |
1613 #ifdef FEAT_SYN_HL | |
1614 if (paren == REG_ZPAREN) | |
308 | 1615 EMSG_RET_NULL(_("E52: Unmatched \\z(")); |
7 | 1616 else |
1617 #endif | |
1618 if (paren == REG_NPAREN) | |
4444 | 1619 EMSG2_RET_NULL(_(e_unmatchedpp), reg_magic == MAGIC_ALL); |
7 | 1620 else |
4444 | 1621 EMSG2_RET_NULL(_(e_unmatchedp), reg_magic == MAGIC_ALL); |
7 | 1622 } |
1623 else if (paren == REG_NOPAREN && peekchr() != NUL) | |
1624 { | |
1625 if (curchr == Magic(')')) | |
4444 | 1626 EMSG2_RET_NULL(_(e_unmatchedpar), reg_magic == MAGIC_ALL); |
7 | 1627 else |
308 | 1628 EMSG_RET_NULL(_(e_trailing)); /* "Can't happen". */ |
7 | 1629 /* NOTREACHED */ |
1630 } | |
1631 /* | |
1632 * Here we set the flag allowing back references to this set of | |
1633 * parentheses. | |
1634 */ | |
1635 if (paren == REG_PAREN) | |
1636 had_endbrace[parno] = TRUE; /* have seen the close paren */ | |
1637 return ret; | |
1638 } | |
1639 | |
1640 /* | |
4444 | 1641 * Parse one alternative of an | operator. |
7 | 1642 * Implements the & operator. |
1643 */ | |
1644 static char_u * | |
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1645 regbranch(int *flagp) |
7 | 1646 { |
1647 char_u *ret; | |
1648 char_u *chain = NULL; | |
1649 char_u *latest; | |
1650 int flags; | |
1651 | |
1652 *flagp = WORST | HASNL; /* Tentatively. */ | |
1653 | |
1654 ret = regnode(BRANCH); | |
1655 for (;;) | |
1656 { | |
1657 latest = regconcat(&flags); | |
1658 if (latest == NULL) | |
1659 return NULL; | |
1660 /* If one of the branches has width, the whole thing has. If one of | |
1661 * the branches anchors at start-of-line, the whole thing does. | |
1662 * If one of the branches uses look-behind, the whole thing does. */ | |
1663 *flagp |= flags & (HASWIDTH | SPSTART | HASLOOKBH); | |
1664 /* If one of the branches doesn't match a line-break, the whole thing | |
1665 * doesn't. */ | |
1666 *flagp &= ~HASNL | (flags & HASNL); | |
1667 if (chain != NULL) | |
1668 regtail(chain, latest); | |
1669 if (peekchr() != Magic('&')) | |
1670 break; | |
1671 skipchr(); | |
1672 regtail(latest, regnode(END)); /* operand ends */ | |
2010 | 1673 if (reg_toolong) |
1674 break; | |
7 | 1675 reginsert(MATCH, latest); |
1676 chain = latest; | |
1677 } | |
1678 | |
1679 return ret; | |
1680 } | |
1681 | |
1682 /* | |
4444 | 1683 * Parse one alternative of an | or & operator. |
7 | 1684 * Implements the concatenation operator. |
1685 */ | |
1686 static char_u * | |
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parents:
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diff
changeset
|
1687 regconcat(int *flagp) |
7 | 1688 { |
1689 char_u *first = NULL; | |
1690 char_u *chain = NULL; | |
1691 char_u *latest; | |
1692 int flags; | |
1693 int cont = TRUE; | |
1694 | |
1695 *flagp = WORST; /* Tentatively. */ | |
1696 | |
1697 while (cont) | |
1698 { | |
1699 switch (peekchr()) | |
1700 { | |
1701 case NUL: | |
1702 case Magic('|'): | |
1703 case Magic('&'): | |
1704 case Magic(')'): | |
1705 cont = FALSE; | |
1706 break; | |
1707 case Magic('Z'): | |
1708 #ifdef FEAT_MBYTE | |
1709 regflags |= RF_ICOMBINE; | |
1710 #endif | |
1711 skipchr_keepstart(); | |
1712 break; | |
1713 case Magic('c'): | |
1714 regflags |= RF_ICASE; | |
1715 skipchr_keepstart(); | |
1716 break; | |
1717 case Magic('C'): | |
1718 regflags |= RF_NOICASE; | |
1719 skipchr_keepstart(); | |
1720 break; | |
1721 case Magic('v'): | |
1722 reg_magic = MAGIC_ALL; | |
1723 skipchr_keepstart(); | |
1724 curchr = -1; | |
1725 break; | |
1726 case Magic('m'): | |
1727 reg_magic = MAGIC_ON; | |
1728 skipchr_keepstart(); | |
1729 curchr = -1; | |
1730 break; | |
1731 case Magic('M'): | |
1732 reg_magic = MAGIC_OFF; | |
1733 skipchr_keepstart(); | |
1734 curchr = -1; | |
1735 break; | |
1736 case Magic('V'): | |
1737 reg_magic = MAGIC_NONE; | |
1738 skipchr_keepstart(); | |
1739 curchr = -1; | |
1740 break; | |
1741 default: | |
1742 latest = regpiece(&flags); | |
2010 | 1743 if (latest == NULL || reg_toolong) |
7 | 1744 return NULL; |
1745 *flagp |= flags & (HASWIDTH | HASNL | HASLOOKBH); | |
1746 if (chain == NULL) /* First piece. */ | |
1747 *flagp |= flags & SPSTART; | |
1748 else | |
1749 regtail(chain, latest); | |
1750 chain = latest; | |
1751 if (first == NULL) | |
1752 first = latest; | |
1753 break; | |
1754 } | |
1755 } | |
1756 if (first == NULL) /* Loop ran zero times. */ | |
1757 first = regnode(NOTHING); | |
1758 return first; | |
1759 } | |
1760 | |
1761 /* | |
4444 | 1762 * Parse something followed by possible [*+=]. |
7 | 1763 * |
1764 * Note that the branching code sequences used for = and the general cases | |
1765 * of * and + are somewhat optimized: they use the same NOTHING node as | |
1766 * both the endmarker for their branch list and the body of the last branch. | |
1767 * It might seem that this node could be dispensed with entirely, but the | |
1768 * endmarker role is not redundant. | |
1769 */ | |
1770 static char_u * | |
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diff
changeset
|
1771 regpiece(int *flagp) |
7 | 1772 { |
1773 char_u *ret; | |
1774 int op; | |
1775 char_u *next; | |
1776 int flags; | |
1777 long minval; | |
1778 long maxval; | |
1779 | |
1780 ret = regatom(&flags); | |
1781 if (ret == NULL) | |
1782 return NULL; | |
1783 | |
1784 op = peekchr(); | |
1785 if (re_multi_type(op) == NOT_MULTI) | |
1786 { | |
1787 *flagp = flags; | |
1788 return ret; | |
1789 } | |
1790 /* default flags */ | |
1791 *flagp = (WORST | SPSTART | (flags & (HASNL | HASLOOKBH))); | |
1792 | |
1793 skipchr(); | |
1794 switch (op) | |
1795 { | |
1796 case Magic('*'): | |
1797 if (flags & SIMPLE) | |
1798 reginsert(STAR, ret); | |
1799 else | |
1800 { | |
1801 /* Emit x* as (x&|), where & means "self". */ | |
1802 reginsert(BRANCH, ret); /* Either x */ | |
1803 regoptail(ret, regnode(BACK)); /* and loop */ | |
1804 regoptail(ret, ret); /* back */ | |
1805 regtail(ret, regnode(BRANCH)); /* or */ | |
1806 regtail(ret, regnode(NOTHING)); /* null. */ | |
1807 } | |
1808 break; | |
1809 | |
1810 case Magic('+'): | |
1811 if (flags & SIMPLE) | |
1812 reginsert(PLUS, ret); | |
1813 else | |
1814 { | |
1815 /* Emit x+ as x(&|), where & means "self". */ | |
1816 next = regnode(BRANCH); /* Either */ | |
1817 regtail(ret, next); | |
233 | 1818 regtail(regnode(BACK), ret); /* loop back */ |
7 | 1819 regtail(next, regnode(BRANCH)); /* or */ |
1820 regtail(ret, regnode(NOTHING)); /* null. */ | |
1821 } | |
1822 *flagp = (WORST | HASWIDTH | (flags & (HASNL | HASLOOKBH))); | |
1823 break; | |
1824 | |
1825 case Magic('@'): | |
1826 { | |
1827 int lop = END; | |
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1828 long nr; |
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1829 |
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1830 nr = getdecchrs(); |
7 | 1831 switch (no_Magic(getchr())) |
1832 { | |
1833 case '=': lop = MATCH; break; /* \@= */ | |
1834 case '!': lop = NOMATCH; break; /* \@! */ | |
1835 case '>': lop = SUBPAT; break; /* \@> */ | |
1836 case '<': switch (no_Magic(getchr())) | |
1837 { | |
1838 case '=': lop = BEHIND; break; /* \@<= */ | |
1839 case '!': lop = NOBEHIND; break; /* \@<! */ | |
1840 } | |
1841 } | |
1842 if (lop == END) | |
4444 | 1843 EMSG2_RET_NULL(_("E59: invalid character after %s@"), |
7 | 1844 reg_magic == MAGIC_ALL); |
1845 /* Look behind must match with behind_pos. */ | |
1846 if (lop == BEHIND || lop == NOBEHIND) | |
1847 { | |
1848 regtail(ret, regnode(BHPOS)); | |
1849 *flagp |= HASLOOKBH; | |
1850 } | |
1851 regtail(ret, regnode(END)); /* operand ends */ | |
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1852 if (lop == BEHIND || lop == NOBEHIND) |
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1853 { |
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1854 if (nr < 0) |
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1855 nr = 0; /* no limit is same as zero limit */ |
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1856 reginsert_nr(lop, nr, ret); |
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1857 } |
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1858 else |
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1859 reginsert(lop, ret); |
7 | 1860 break; |
1861 } | |
1862 | |
1863 case Magic('?'): | |
1864 case Magic('='): | |
1865 /* Emit x= as (x|) */ | |
1866 reginsert(BRANCH, ret); /* Either x */ | |
1867 regtail(ret, regnode(BRANCH)); /* or */ | |
1868 next = regnode(NOTHING); /* null. */ | |
1869 regtail(ret, next); | |
1870 regoptail(ret, next); | |
1871 break; | |
1872 | |
1873 case Magic('{'): | |
1874 if (!read_limits(&minval, &maxval)) | |
1875 return NULL; | |
1876 if (flags & SIMPLE) | |
1877 { | |
1878 reginsert(BRACE_SIMPLE, ret); | |
1879 reginsert_limits(BRACE_LIMITS, minval, maxval, ret); | |
1880 } | |
1881 else | |
1882 { | |
1883 if (num_complex_braces >= 10) | |
4444 | 1884 EMSG2_RET_NULL(_("E60: Too many complex %s{...}s"), |
7 | 1885 reg_magic == MAGIC_ALL); |
1886 reginsert(BRACE_COMPLEX + num_complex_braces, ret); | |
1887 regoptail(ret, regnode(BACK)); | |
1888 regoptail(ret, ret); | |
1889 reginsert_limits(BRACE_LIMITS, minval, maxval, ret); | |
1890 ++num_complex_braces; | |
1891 } | |
1892 if (minval > 0 && maxval > 0) | |
1893 *flagp = (HASWIDTH | (flags & (HASNL | HASLOOKBH))); | |
1894 break; | |
1895 } | |
1896 if (re_multi_type(peekchr()) != NOT_MULTI) | |
1897 { | |
1898 /* Can't have a multi follow a multi. */ | |
1899 if (peekchr() == Magic('*')) | |
1900 sprintf((char *)IObuff, _("E61: Nested %s*"), | |
1901 reg_magic >= MAGIC_ON ? "" : "\\"); | |
1902 else | |
1903 sprintf((char *)IObuff, _("E62: Nested %s%c"), | |
1904 reg_magic == MAGIC_ALL ? "" : "\\", no_Magic(peekchr())); | |
1905 EMSG_RET_NULL(IObuff); | |
1906 } | |
1907 | |
1908 return ret; | |
1909 } | |
1910 | |
4444 | 1911 /* When making changes to classchars also change nfa_classcodes. */ |
1912 static char_u *classchars = (char_u *)".iIkKfFpPsSdDxXoOwWhHaAlLuU"; | |
1913 static int classcodes[] = { | |
1914 ANY, IDENT, SIDENT, KWORD, SKWORD, | |
1915 FNAME, SFNAME, PRINT, SPRINT, | |
1916 WHITE, NWHITE, DIGIT, NDIGIT, | |
1917 HEX, NHEX, OCTAL, NOCTAL, | |
1918 WORD, NWORD, HEAD, NHEAD, | |
1919 ALPHA, NALPHA, LOWER, NLOWER, | |
1920 UPPER, NUPPER | |
1921 }; | |
1922 | |
7 | 1923 /* |
4444 | 1924 * Parse the lowest level. |
7 | 1925 * |
1926 * Optimization: gobbles an entire sequence of ordinary characters so that | |
1927 * it can turn them into a single node, which is smaller to store and | |
1928 * faster to run. Don't do this when one_exactly is set. | |
1929 */ | |
1930 static char_u * | |
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diff
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1931 regatom(int *flagp) |
7 | 1932 { |
1933 char_u *ret; | |
1934 int flags; | |
1935 int c; | |
1936 char_u *p; | |
1937 int extra = 0; | |
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changeset
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1938 int save_prev_at_start = prev_at_start; |
7 | 1939 |
1940 *flagp = WORST; /* Tentatively. */ | |
1941 | |
1942 c = getchr(); | |
1943 switch (c) | |
1944 { | |
1945 case Magic('^'): | |
1946 ret = regnode(BOL); | |
1947 break; | |
1948 | |
1949 case Magic('$'): | |
1950 ret = regnode(EOL); | |
1951 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
1952 had_eol = TRUE; | |
1953 #endif | |
1954 break; | |
1955 | |
1956 case Magic('<'): | |
1957 ret = regnode(BOW); | |
1958 break; | |
1959 | |
1960 case Magic('>'): | |
1961 ret = regnode(EOW); | |
1962 break; | |
1963 | |
1964 case Magic('_'): | |
1965 c = no_Magic(getchr()); | |
1966 if (c == '^') /* "\_^" is start-of-line */ | |
1967 { | |
1968 ret = regnode(BOL); | |
1969 break; | |
1970 } | |
1971 if (c == '$') /* "\_$" is end-of-line */ | |
1972 { | |
1973 ret = regnode(EOL); | |
1974 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
1975 had_eol = TRUE; | |
1976 #endif | |
1977 break; | |
1978 } | |
1979 | |
1980 extra = ADD_NL; | |
1981 *flagp |= HASNL; | |
1982 | |
1983 /* "\_[" is character range plus newline */ | |
1984 if (c == '[') | |
1985 goto collection; | |
1986 | |
1987 /* "\_x" is character class plus newline */ | |
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1988 /* FALLTHROUGH */ |
7 | 1989 |
1990 /* | |
1991 * Character classes. | |
1992 */ | |
1993 case Magic('.'): | |
1994 case Magic('i'): | |
1995 case Magic('I'): | |
1996 case Magic('k'): | |
1997 case Magic('K'): | |
1998 case Magic('f'): | |
1999 case Magic('F'): | |
2000 case Magic('p'): | |
2001 case Magic('P'): | |
2002 case Magic('s'): | |
2003 case Magic('S'): | |
2004 case Magic('d'): | |
2005 case Magic('D'): | |
2006 case Magic('x'): | |
2007 case Magic('X'): | |
2008 case Magic('o'): | |
2009 case Magic('O'): | |
2010 case Magic('w'): | |
2011 case Magic('W'): | |
2012 case Magic('h'): | |
2013 case Magic('H'): | |
2014 case Magic('a'): | |
2015 case Magic('A'): | |
2016 case Magic('l'): | |
2017 case Magic('L'): | |
2018 case Magic('u'): | |
2019 case Magic('U'): | |
2020 p = vim_strchr(classchars, no_Magic(c)); | |
2021 if (p == NULL) | |
2022 EMSG_RET_NULL(_("E63: invalid use of \\_")); | |
714 | 2023 #ifdef FEAT_MBYTE |
2024 /* When '.' is followed by a composing char ignore the dot, so that | |
2025 * the composing char is matched here. */ | |
2026 if (enc_utf8 && c == Magic('.') && utf_iscomposing(peekchr())) | |
2027 { | |
2028 c = getchr(); | |
2029 goto do_multibyte; | |
2030 } | |
2031 #endif | |
7 | 2032 ret = regnode(classcodes[p - classchars] + extra); |
2033 *flagp |= HASWIDTH | SIMPLE; | |
2034 break; | |
2035 | |
2036 case Magic('n'): | |
2037 if (reg_string) | |
2038 { | |
2039 /* In a string "\n" matches a newline character. */ | |
2040 ret = regnode(EXACTLY); | |
2041 regc(NL); | |
2042 regc(NUL); | |
2043 *flagp |= HASWIDTH | SIMPLE; | |
2044 } | |
2045 else | |
2046 { | |
2047 /* In buffer text "\n" matches the end of a line. */ | |
2048 ret = regnode(NEWL); | |
2049 *flagp |= HASWIDTH | HASNL; | |
2050 } | |
2051 break; | |
2052 | |
2053 case Magic('('): | |
2054 if (one_exactly) | |
2055 EMSG_ONE_RET_NULL; | |
2056 ret = reg(REG_PAREN, &flags); | |
2057 if (ret == NULL) | |
2058 return NULL; | |
2059 *flagp |= flags & (HASWIDTH | SPSTART | HASNL | HASLOOKBH); | |
2060 break; | |
2061 | |
2062 case NUL: | |
2063 case Magic('|'): | |
2064 case Magic('&'): | |
2065 case Magic(')'): | |
1468 | 2066 if (one_exactly) |
2067 EMSG_ONE_RET_NULL; | |
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diff
changeset
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2068 IEMSG_RET_NULL(_(e_internal)); /* Supposed to be caught earlier. */ |
7 | 2069 /* NOTREACHED */ |
2070 | |
2071 case Magic('='): | |
2072 case Magic('?'): | |
2073 case Magic('+'): | |
2074 case Magic('@'): | |
2075 case Magic('{'): | |
2076 case Magic('*'): | |
2077 c = no_Magic(c); | |
2078 sprintf((char *)IObuff, _("E64: %s%c follows nothing"), | |
2079 (c == '*' ? reg_magic >= MAGIC_ON : reg_magic == MAGIC_ALL) | |
2080 ? "" : "\\", c); | |
2081 EMSG_RET_NULL(IObuff); | |
2082 /* NOTREACHED */ | |
2083 | |
2084 case Magic('~'): /* previous substitute pattern */ | |
359 | 2085 if (reg_prev_sub != NULL) |
7 | 2086 { |
2087 char_u *lp; | |
2088 | |
2089 ret = regnode(EXACTLY); | |
2090 lp = reg_prev_sub; | |
2091 while (*lp != NUL) | |
2092 regc(*lp++); | |
2093 regc(NUL); | |
2094 if (*reg_prev_sub != NUL) | |
2095 { | |
2096 *flagp |= HASWIDTH; | |
2097 if ((lp - reg_prev_sub) == 1) | |
2098 *flagp |= SIMPLE; | |
2099 } | |
2100 } | |
2101 else | |
2102 EMSG_RET_NULL(_(e_nopresub)); | |
2103 break; | |
2104 | |
2105 case Magic('1'): | |
2106 case Magic('2'): | |
2107 case Magic('3'): | |
2108 case Magic('4'): | |
2109 case Magic('5'): | |
2110 case Magic('6'): | |
2111 case Magic('7'): | |
2112 case Magic('8'): | |
2113 case Magic('9'): | |
2114 { | |
2115 int refnum; | |
2116 | |
2117 refnum = c - Magic('0'); | |
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2118 if (!seen_endbrace(refnum)) |
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2119 return NULL; |
7 | 2120 ret = regnode(BACKREF + refnum); |
2121 } | |
2122 break; | |
2123 | |
2124 case Magic('z'): | |
2125 { | |
2126 c = no_Magic(getchr()); | |
2127 switch (c) | |
2128 { | |
741 | 2129 #ifdef FEAT_SYN_HL |
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2130 case '(': if ((reg_do_extmatch & REX_SET) == 0) |
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2131 EMSG_RET_NULL(_(e_z_not_allowed)); |
7 | 2132 if (one_exactly) |
2133 EMSG_ONE_RET_NULL; | |
2134 ret = reg(REG_ZPAREN, &flags); | |
2135 if (ret == NULL) | |
2136 return NULL; | |
2137 *flagp |= flags & (HASWIDTH|SPSTART|HASNL|HASLOOKBH); | |
2138 re_has_z = REX_SET; | |
2139 break; | |
2140 | |
2141 case '1': | |
2142 case '2': | |
2143 case '3': | |
2144 case '4': | |
2145 case '5': | |
2146 case '6': | |
2147 case '7': | |
2148 case '8': | |
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2149 case '9': if ((reg_do_extmatch & REX_USE) == 0) |
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2150 EMSG_RET_NULL(_(e_z1_not_allowed)); |
7 | 2151 ret = regnode(ZREF + c - '0'); |
2152 re_has_z = REX_USE; | |
2153 break; | |
741 | 2154 #endif |
7 | 2155 |
2156 case 's': ret = regnode(MOPEN + 0); | |
6203 | 2157 if (re_mult_next("\\zs") == FAIL) |
2158 return NULL; | |
7 | 2159 break; |
2160 | |
2161 case 'e': ret = regnode(MCLOSE + 0); | |
6203 | 2162 if (re_mult_next("\\ze") == FAIL) |
2163 return NULL; | |
7 | 2164 break; |
2165 | |
2166 default: EMSG_RET_NULL(_("E68: Invalid character after \\z")); | |
2167 } | |
2168 } | |
2169 break; | |
2170 | |
2171 case Magic('%'): | |
2172 { | |
2173 c = no_Magic(getchr()); | |
2174 switch (c) | |
2175 { | |
2176 /* () without a back reference */ | |
2177 case '(': | |
2178 if (one_exactly) | |
2179 EMSG_ONE_RET_NULL; | |
2180 ret = reg(REG_NPAREN, &flags); | |
2181 if (ret == NULL) | |
2182 return NULL; | |
2183 *flagp |= flags & (HASWIDTH | SPSTART | HASNL | HASLOOKBH); | |
2184 break; | |
2185 | |
2186 /* Catch \%^ and \%$ regardless of where they appear in the | |
2187 * pattern -- regardless of whether or not it makes sense. */ | |
2188 case '^': | |
2189 ret = regnode(RE_BOF); | |
2190 break; | |
2191 | |
2192 case '$': | |
2193 ret = regnode(RE_EOF); | |
2194 break; | |
2195 | |
2196 case '#': | |
2197 ret = regnode(CURSOR); | |
2198 break; | |
2199 | |
639 | 2200 case 'V': |
2201 ret = regnode(RE_VISUAL); | |
2202 break; | |
2203 | |
5901 | 2204 case 'C': |
2205 ret = regnode(RE_COMPOSING); | |
2206 break; | |
2207 | |
7 | 2208 /* \%[abc]: Emit as a list of branches, all ending at the last |
2209 * branch which matches nothing. */ | |
2210 case '[': | |
2211 if (one_exactly) /* doesn't nest */ | |
2212 EMSG_ONE_RET_NULL; | |
2213 { | |
2214 char_u *lastbranch; | |
2215 char_u *lastnode = NULL; | |
2216 char_u *br; | |
2217 | |
2218 ret = NULL; | |
2219 while ((c = getchr()) != ']') | |
2220 { | |
2221 if (c == NUL) | |
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changeset
|
2222 EMSG2_RET_NULL(_(e_missing_sb), |
7 | 2223 reg_magic == MAGIC_ALL); |
2224 br = regnode(BRANCH); | |
2225 if (ret == NULL) | |
2226 ret = br; | |
2227 else | |
2228 regtail(lastnode, br); | |
2229 | |
2230 ungetchr(); | |
2231 one_exactly = TRUE; | |
2232 lastnode = regatom(flagp); | |
2233 one_exactly = FALSE; | |
2234 if (lastnode == NULL) | |
2235 return NULL; | |
2236 } | |
2237 if (ret == NULL) | |
4760
532a9855bd30
updated for version 7.3.1127
Bram Moolenaar <bram@vim.org>
parents:
4746
diff
changeset
|
2238 EMSG2_RET_NULL(_(e_empty_sb), |
7 | 2239 reg_magic == MAGIC_ALL); |
2240 lastbranch = regnode(BRANCH); | |
2241 br = regnode(NOTHING); | |
2242 if (ret != JUST_CALC_SIZE) | |
2243 { | |
2244 regtail(lastnode, br); | |
2245 regtail(lastbranch, br); | |
2246 /* connect all branches to the NOTHING | |
2247 * branch at the end */ | |
2248 for (br = ret; br != lastnode; ) | |
2249 { | |
2250 if (OP(br) == BRANCH) | |
2251 { | |
2252 regtail(br, lastbranch); | |
2253 br = OPERAND(br); | |
2254 } | |
2255 else | |
2256 br = regnext(br); | |
2257 } | |
2258 } | |
1701 | 2259 *flagp &= ~(HASWIDTH | SIMPLE); |
7 | 2260 break; |
2261 } | |
2262 | |
24 | 2263 case 'd': /* %d123 decimal */ |
2264 case 'o': /* %o123 octal */ | |
2265 case 'x': /* %xab hex 2 */ | |
2266 case 'u': /* %uabcd hex 4 */ | |
2267 case 'U': /* %U1234abcd hex 8 */ | |
2268 { | |
12752
09c856605191
patch 8.0.1254: undefined left shift in gethexchrs()
Christian Brabandt <cb@256bit.org>
parents:
12674
diff
changeset
|
2269 long i; |
24 | 2270 |
2271 switch (c) | |
2272 { | |
2273 case 'd': i = getdecchrs(); break; | |
2274 case 'o': i = getoctchrs(); break; | |
2275 case 'x': i = gethexchrs(2); break; | |
2276 case 'u': i = gethexchrs(4); break; | |
2277 case 'U': i = gethexchrs(8); break; | |
2278 default: i = -1; break; | |
2279 } | |
2280 | |
2281 if (i < 0) | |
4444 | 2282 EMSG2_RET_NULL( |
24 | 2283 _("E678: Invalid character after %s%%[dxouU]"), |
2284 reg_magic == MAGIC_ALL); | |
714 | 2285 #ifdef FEAT_MBYTE |
2286 if (use_multibytecode(i)) | |
2287 ret = regnode(MULTIBYTECODE); | |
2288 else | |
2289 #endif | |
2290 ret = regnode(EXACTLY); | |
24 | 2291 if (i == 0) |
2292 regc(0x0a); | |
2293 else | |
2294 #ifdef FEAT_MBYTE | |
2295 regmbc(i); | |
2296 #else | |
2297 regc(i); | |
2298 #endif | |
2299 regc(NUL); | |
2300 *flagp |= HASWIDTH; | |
2301 break; | |
2302 } | |
2303 | |
7 | 2304 default: |
639 | 2305 if (VIM_ISDIGIT(c) || c == '<' || c == '>' |
2306 || c == '\'') | |
7 | 2307 { |
2308 long_u n = 0; | |
2309 int cmp; | |
2310 | |
2311 cmp = c; | |
2312 if (cmp == '<' || cmp == '>') | |
2313 c = getchr(); | |
2314 while (VIM_ISDIGIT(c)) | |
2315 { | |
2316 n = n * 10 + (c - '0'); | |
2317 c = getchr(); | |
2318 } | |
639 | 2319 if (c == '\'' && n == 0) |
2320 { | |
2321 /* "\%'m", "\%<'m" and "\%>'m": Mark */ | |
2322 c = getchr(); | |
2323 ret = regnode(RE_MARK); | |
2324 if (ret == JUST_CALC_SIZE) | |
2325 regsize += 2; | |
2326 else | |
2327 { | |
2328 *regcode++ = c; | |
2329 *regcode++ = cmp; | |
2330 } | |
2331 break; | |
2332 } | |
2333 else if (c == 'l' || c == 'c' || c == 'v') | |
7 | 2334 { |
2335 if (c == 'l') | |
8021
b6b4f354df23
commit https://github.com/vim/vim/commit/7c29f387819b5817b003d2ba73e2b5cf3cb3d0dd
Christian Brabandt <cb@256bit.org>
parents:
7833
diff
changeset
|
2336 { |
7 | 2337 ret = regnode(RE_LNUM); |
8021
b6b4f354df23
commit https://github.com/vim/vim/commit/7c29f387819b5817b003d2ba73e2b5cf3cb3d0dd
Christian Brabandt <cb@256bit.org>
parents:
7833
diff
changeset
|
2338 if (save_prev_at_start) |
b6b4f354df23
commit https://github.com/vim/vim/commit/7c29f387819b5817b003d2ba73e2b5cf3cb3d0dd
Christian Brabandt <cb@256bit.org>
parents:
7833
diff
changeset
|
2339 at_start = TRUE; |
b6b4f354df23
commit https://github.com/vim/vim/commit/7c29f387819b5817b003d2ba73e2b5cf3cb3d0dd
Christian Brabandt <cb@256bit.org>
parents:
7833
diff
changeset
|
2340 } |
7 | 2341 else if (c == 'c') |
2342 ret = regnode(RE_COL); | |
2343 else | |
2344 ret = regnode(RE_VCOL); | |
2345 if (ret == JUST_CALC_SIZE) | |
2346 regsize += 5; | |
2347 else | |
2348 { | |
2349 /* put the number and the optional | |
2350 * comparator after the opcode */ | |
2351 regcode = re_put_long(regcode, n); | |
2352 *regcode++ = cmp; | |
2353 } | |
2354 break; | |
2355 } | |
2356 } | |
2357 | |
4444 | 2358 EMSG2_RET_NULL(_("E71: Invalid character after %s%%"), |
7 | 2359 reg_magic == MAGIC_ALL); |
2360 } | |
2361 } | |
2362 break; | |
2363 | |
2364 case Magic('['): | |
2365 collection: | |
2366 { | |
2367 char_u *lp; | |
2368 | |
2369 /* | |
2370 * If there is no matching ']', we assume the '[' is a normal | |
2371 * character. This makes 'incsearch' and ":help [" work. | |
2372 */ | |
2373 lp = skip_anyof(regparse); | |
2374 if (*lp == ']') /* there is a matching ']' */ | |
2375 { | |
2376 int startc = -1; /* > 0 when next '-' is a range */ | |
2377 int endc; | |
2378 | |
2379 /* | |
2380 * In a character class, different parsing rules apply. | |
2381 * Not even \ is special anymore, nothing is. | |
2382 */ | |
2383 if (*regparse == '^') /* Complement of range. */ | |
2384 { | |
2385 ret = regnode(ANYBUT + extra); | |
2386 regparse++; | |
2387 } | |
2388 else | |
2389 ret = regnode(ANYOF + extra); | |
2390 | |
2391 /* At the start ']' and '-' mean the literal character. */ | |
2392 if (*regparse == ']' || *regparse == '-') | |
167 | 2393 { |
2394 startc = *regparse; | |
7 | 2395 regc(*regparse++); |
167 | 2396 } |
7 | 2397 |
2398 while (*regparse != NUL && *regparse != ']') | |
2399 { | |
2400 if (*regparse == '-') | |
2401 { | |
2402 ++regparse; | |
2403 /* The '-' is not used for a range at the end and | |
2404 * after or before a '\n'. */ | |
2405 if (*regparse == ']' || *regparse == NUL | |
2406 || startc == -1 | |
2407 || (regparse[0] == '\\' && regparse[1] == 'n')) | |
2408 { | |
2409 regc('-'); | |
2410 startc = '-'; /* [--x] is a range */ | |
2411 } | |
2412 else | |
2413 { | |
167 | 2414 /* Also accept "a-[.z.]" */ |
2415 endc = 0; | |
2416 if (*regparse == '[') | |
2417 endc = get_coll_element(®parse); | |
2418 if (endc == 0) | |
2419 { | |
7 | 2420 #ifdef FEAT_MBYTE |
167 | 2421 if (has_mbyte) |
2422 endc = mb_ptr2char_adv(®parse); | |
2423 else | |
7 | 2424 #endif |
167 | 2425 endc = *regparse++; |
2426 } | |
24 | 2427 |
2428 /* Handle \o40, \x20 and \u20AC style sequences */ | |
4744
a62695305e03
updated for version 7.3.1119
Bram Moolenaar <bram@vim.org>
parents:
4732
diff
changeset
|
2429 if (endc == '\\' && !reg_cpo_lit && !reg_cpo_bsl) |
24 | 2430 endc = coll_get_char(); |
2431 | |
7 | 2432 if (startc > endc) |
11480
99ce30ac4226
patch 8.0.0623: error for invalid regexp is not very informative
Christian Brabandt <cb@256bit.org>
parents:
11269
diff
changeset
|
2433 EMSG_RET_NULL(_(e_reverse_range)); |
7 | 2434 #ifdef FEAT_MBYTE |
2435 if (has_mbyte && ((*mb_char2len)(startc) > 1 | |
2436 || (*mb_char2len)(endc) > 1)) | |
2437 { | |
11480
99ce30ac4226
patch 8.0.0623: error for invalid regexp is not very informative
Christian Brabandt <cb@256bit.org>
parents:
11269
diff
changeset
|
2438 /* Limit to a range of 256 chars. */ |
7 | 2439 if (endc > startc + 256) |
11480
99ce30ac4226
patch 8.0.0623: error for invalid regexp is not very informative
Christian Brabandt <cb@256bit.org>
parents:
11269
diff
changeset
|
2440 EMSG_RET_NULL(_(e_large_class)); |
7 | 2441 while (++startc <= endc) |
2442 regmbc(startc); | |
2443 } | |
2444 else | |
2445 #endif | |
2446 { | |
2447 #ifdef EBCDIC | |
2448 int alpha_only = FALSE; | |
2449 | |
2450 /* for alphabetical range skip the gaps | |
2451 * 'i'-'j', 'r'-'s', 'I'-'J' and 'R'-'S'. */ | |
2452 if (isalpha(startc) && isalpha(endc)) | |
2453 alpha_only = TRUE; | |
2454 #endif | |
2455 while (++startc <= endc) | |
2456 #ifdef EBCDIC | |
2457 if (!alpha_only || isalpha(startc)) | |
2458 #endif | |
2459 regc(startc); | |
2460 } | |
2461 startc = -1; | |
2462 } | |
2463 } | |
2464 /* | |
2465 * Only "\]", "\^", "\]" and "\\" are special in Vi. Vim | |
2466 * accepts "\t", "\e", etc., but only when the 'l' flag in | |
2467 * 'cpoptions' is not included. | |
167 | 2468 * Posix doesn't recognize backslash at all. |
7 | 2469 */ |
2470 else if (*regparse == '\\' | |
4744
a62695305e03
updated for version 7.3.1119
Bram Moolenaar <bram@vim.org>
parents:
4732
diff
changeset
|
2471 && !reg_cpo_bsl |
7 | 2472 && (vim_strchr(REGEXP_INRANGE, regparse[1]) != NULL |
4744
a62695305e03
updated for version 7.3.1119
Bram Moolenaar <bram@vim.org>
parents:
4732
diff
changeset
|
2473 || (!reg_cpo_lit |
7 | 2474 && vim_strchr(REGEXP_ABBR, |
2475 regparse[1]) != NULL))) | |
2476 { | |
2477 regparse++; | |
2478 if (*regparse == 'n') | |
2479 { | |
2480 /* '\n' in range: also match NL */ | |
2481 if (ret != JUST_CALC_SIZE) | |
2482 { | |
4084 | 2483 /* Using \n inside [^] does not change what |
2484 * matches. "[^\n]" is the same as ".". */ | |
2485 if (*ret == ANYOF) | |
2486 { | |
7 | 2487 *ret = ANYOF + ADD_NL; |
4084 | 2488 *flagp |= HASNL; |
2489 } | |
7 | 2490 /* else: must have had a \n already */ |
2491 } | |
2492 regparse++; | |
2493 startc = -1; | |
2494 } | |
24 | 2495 else if (*regparse == 'd' |
2496 || *regparse == 'o' | |
2497 || *regparse == 'x' | |
2498 || *regparse == 'u' | |
2499 || *regparse == 'U') | |
2500 { | |
2501 startc = coll_get_char(); | |
2502 if (startc == 0) | |
2503 regc(0x0a); | |
2504 else | |
2505 #ifdef FEAT_MBYTE | |
2506 regmbc(startc); | |
2507 #else | |
2508 regc(startc); | |
2509 #endif | |
2510 } | |
7 | 2511 else |
2512 { | |
2513 startc = backslash_trans(*regparse++); | |
2514 regc(startc); | |
2515 } | |
2516 } | |
2517 else if (*regparse == '[') | |
2518 { | |
2519 int c_class; | |
2520 int cu; | |
2521 | |
167 | 2522 c_class = get_char_class(®parse); |
7 | 2523 startc = -1; |
2524 /* Characters assumed to be 8 bits! */ | |
2525 switch (c_class) | |
2526 { | |
2527 case CLASS_NONE: | |
167 | 2528 c_class = get_equi_class(®parse); |
2529 if (c_class != 0) | |
2530 { | |
2531 /* produce equivalence class */ | |
2532 reg_equi_class(c_class); | |
2533 } | |
2534 else if ((c_class = | |
2535 get_coll_element(®parse)) != 0) | |
2536 { | |
2537 /* produce a collating element */ | |
2538 regmbc(c_class); | |
2539 } | |
2540 else | |
2541 { | |
2542 /* literal '[', allow [[-x] as a range */ | |
2543 startc = *regparse++; | |
2544 regc(startc); | |
2545 } | |
7 | 2546 break; |
2547 case CLASS_ALNUM: | |
9015
42b228c8701b
commit https://github.com/vim/vim/commit/e8aee7dcf9b12becff86e8ce1783a86801c5f9f6
Christian Brabandt <cb@256bit.org>
parents:
8995
diff
changeset
|
2548 for (cu = 1; cu < 128; cu++) |
7 | 2549 if (isalnum(cu)) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2550 regmbc(cu); |
7 | 2551 break; |
2552 case CLASS_ALPHA: | |
9015
42b228c8701b
commit https://github.com/vim/vim/commit/e8aee7dcf9b12becff86e8ce1783a86801c5f9f6
Christian Brabandt <cb@256bit.org>
parents:
8995
diff
changeset
|
2553 for (cu = 1; cu < 128; cu++) |
7 | 2554 if (isalpha(cu)) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2555 regmbc(cu); |
7 | 2556 break; |
2557 case CLASS_BLANK: | |
2558 regc(' '); | |
2559 regc('\t'); | |
2560 break; | |
2561 case CLASS_CNTRL: | |
11267
588de97b40e7
patch 8.0.0519: character classes are not well tested
Christian Brabandt <cb@256bit.org>
parents:
11129
diff
changeset
|
2562 for (cu = 1; cu <= 127; cu++) |
7 | 2563 if (iscntrl(cu)) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2564 regmbc(cu); |
7 | 2565 break; |
2566 case CLASS_DIGIT: | |
11267
588de97b40e7
patch 8.0.0519: character classes are not well tested
Christian Brabandt <cb@256bit.org>
parents:
11129
diff
changeset
|
2567 for (cu = 1; cu <= 127; cu++) |
7 | 2568 if (VIM_ISDIGIT(cu)) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2569 regmbc(cu); |
7 | 2570 break; |
2571 case CLASS_GRAPH: | |
11267
588de97b40e7
patch 8.0.0519: character classes are not well tested
Christian Brabandt <cb@256bit.org>
parents:
11129
diff
changeset
|
2572 for (cu = 1; cu <= 127; cu++) |
7 | 2573 if (isgraph(cu)) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2574 regmbc(cu); |
7 | 2575 break; |
2576 case CLASS_LOWER: | |
2577 for (cu = 1; cu <= 255; cu++) | |
9015
42b228c8701b
commit https://github.com/vim/vim/commit/e8aee7dcf9b12becff86e8ce1783a86801c5f9f6
Christian Brabandt <cb@256bit.org>
parents:
8995
diff
changeset
|
2578 if (MB_ISLOWER(cu) && cu != 170 |
42b228c8701b
commit https://github.com/vim/vim/commit/e8aee7dcf9b12becff86e8ce1783a86801c5f9f6
Christian Brabandt <cb@256bit.org>
parents:
8995
diff
changeset
|
2579 && cu != 186) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2580 regmbc(cu); |
7 | 2581 break; |
2582 case CLASS_PRINT: | |
2583 for (cu = 1; cu <= 255; cu++) | |
2584 if (vim_isprintc(cu)) | |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2585 regmbc(cu); |
7 | 2586 break; |
2587 case CLASS_PUNCT: | |
9015
42b228c8701b
commit https://github.com/vim/vim/commit/e8aee7dcf9b12becff86e8ce1783a86801c5f9f6
Christian Brabandt <cb@256bit.org>
parents:
8995
diff
changeset
|
2588 for (cu = 1; cu < 128; cu++) |
7 | 2589 if (ispunct(cu)) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2590 regmbc(cu); |
7 | 2591 break; |
2592 case CLASS_SPACE: | |
2593 for (cu = 9; cu <= 13; cu++) | |
2594 regc(cu); | |
2595 regc(' '); | |
2596 break; | |
2597 case CLASS_UPPER: | |
2598 for (cu = 1; cu <= 255; cu++) | |
1347 | 2599 if (MB_ISUPPER(cu)) |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2600 regmbc(cu); |
7 | 2601 break; |
2602 case CLASS_XDIGIT: | |
2603 for (cu = 1; cu <= 255; cu++) | |
2604 if (vim_isxdigit(cu)) | |
8995
3cf6704d6efc
commit https://github.com/vim/vim/commit/af98a49dd0ef1661b4998f118151fddbf6e4df75
Christian Brabandt <cb@256bit.org>
parents:
8863
diff
changeset
|
2605 regmbc(cu); |
7 | 2606 break; |
2607 case CLASS_TAB: | |
2608 regc('\t'); | |
2609 break; | |
2610 case CLASS_RETURN: | |
2611 regc('\r'); | |
2612 break; | |
2613 case CLASS_BACKSPACE: | |
2614 regc('\b'); | |
2615 break; | |
2616 case CLASS_ESCAPE: | |
2617 regc('\033'); | |
2618 break; | |
2619 } | |
2620 } | |
2621 else | |
2622 { | |
2623 #ifdef FEAT_MBYTE | |
2624 if (has_mbyte) | |
2625 { | |
2626 int len; | |
2627 | |
2628 /* produce a multibyte character, including any | |
2629 * following composing characters */ | |
2630 startc = mb_ptr2char(regparse); | |
474 | 2631 len = (*mb_ptr2len)(regparse); |
7 | 2632 if (enc_utf8 && utf_char2len(startc) != len) |
2633 startc = -1; /* composing chars */ | |
2634 while (--len >= 0) | |
2635 regc(*regparse++); | |
2636 } | |
2637 else | |
2638 #endif | |
2639 { | |
2640 startc = *regparse++; | |
2641 regc(startc); | |
2642 } | |
2643 } | |
2644 } | |
2645 regc(NUL); | |
2646 prevchr_len = 1; /* last char was the ']' */ | |
2647 if (*regparse != ']') | |
2648 EMSG_RET_NULL(_(e_toomsbra)); /* Cannot happen? */ | |
2649 skipchr(); /* let's be friends with the lexer again */ | |
2650 *flagp |= HASWIDTH | SIMPLE; | |
2651 break; | |
2652 } | |
481 | 2653 else if (reg_strict) |
4444 | 2654 EMSG2_RET_NULL(_(e_missingbracket), reg_magic > MAGIC_OFF); |
7 | 2655 } |
2656 /* FALLTHROUGH */ | |
2657 | |
2658 default: | |
2659 { | |
2660 int len; | |
2661 | |
2662 #ifdef FEAT_MBYTE | |
2663 /* A multi-byte character is handled as a separate atom if it's | |
714 | 2664 * before a multi and when it's a composing char. */ |
2665 if (use_multibytecode(c)) | |
7 | 2666 { |
714 | 2667 do_multibyte: |
7 | 2668 ret = regnode(MULTIBYTECODE); |
2669 regmbc(c); | |
2670 *flagp |= HASWIDTH | SIMPLE; | |
2671 break; | |
2672 } | |
2673 #endif | |
2674 | |
2675 ret = regnode(EXACTLY); | |
2676 | |
2677 /* | |
2678 * Append characters as long as: | |
2679 * - there is no following multi, we then need the character in | |
2680 * front of it as a single character operand | |
2681 * - not running into a Magic character | |
2682 * - "one_exactly" is not set | |
2683 * But always emit at least one character. Might be a Multi, | |
2684 * e.g., a "[" without matching "]". | |
2685 */ | |
2686 for (len = 0; c != NUL && (len == 0 | |
2687 || (re_multi_type(peekchr()) == NOT_MULTI | |
2688 && !one_exactly | |
2689 && !is_Magic(c))); ++len) | |
2690 { | |
2691 c = no_Magic(c); | |
2692 #ifdef FEAT_MBYTE | |
2693 if (has_mbyte) | |
2694 { | |
2695 regmbc(c); | |
2696 if (enc_utf8) | |
2697 { | |
2698 int l; | |
2699 | |
714 | 2700 /* Need to get composing character too. */ |
7 | 2701 for (;;) |
2702 { | |
714 | 2703 l = utf_ptr2len(regparse); |
2704 if (!UTF_COMPOSINGLIKE(regparse, regparse + l)) | |
7 | 2705 break; |
714 | 2706 regmbc(utf_ptr2char(regparse)); |
2707 skipchr(); | |
7 | 2708 } |
2709 } | |
2710 } | |
2711 else | |
2712 #endif | |
2713 regc(c); | |
2714 c = getchr(); | |
2715 } | |
2716 ungetchr(); | |
2717 | |
2718 regc(NUL); | |
2719 *flagp |= HASWIDTH; | |
2720 if (len == 1) | |
2721 *flagp |= SIMPLE; | |
2722 } | |
2723 break; | |
2724 } | |
2725 | |
2726 return ret; | |
2727 } | |
2728 | |
714 | 2729 #ifdef FEAT_MBYTE |
2730 /* | |
2731 * Return TRUE if MULTIBYTECODE should be used instead of EXACTLY for | |
2732 * character "c". | |
2733 */ | |
2734 static int | |
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changeset
|
2735 use_multibytecode(int c) |
714 | 2736 { |
2737 return has_mbyte && (*mb_char2len)(c) > 1 | |
2738 && (re_multi_type(peekchr()) != NOT_MULTI | |
2739 || (enc_utf8 && utf_iscomposing(c))); | |
2740 } | |
2741 #endif | |
2742 | |
7 | 2743 /* |
4444 | 2744 * Emit a node. |
7 | 2745 * Return pointer to generated code. |
2746 */ | |
2747 static char_u * | |
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|
2748 regnode(int op) |
7 | 2749 { |
2750 char_u *ret; | |
2751 | |
2752 ret = regcode; | |
2753 if (ret == JUST_CALC_SIZE) | |
2754 regsize += 3; | |
2755 else | |
2756 { | |
2757 *regcode++ = op; | |
2758 *regcode++ = NUL; /* Null "next" pointer. */ | |
2759 *regcode++ = NUL; | |
2760 } | |
2761 return ret; | |
2762 } | |
2763 | |
2764 /* | |
2765 * Emit (if appropriate) a byte of code | |
2766 */ | |
2767 static void | |
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|
2768 regc(int b) |
7 | 2769 { |
2770 if (regcode == JUST_CALC_SIZE) | |
2771 regsize++; | |
2772 else | |
2773 *regcode++ = b; | |
2774 } | |
2775 | |
2776 #ifdef FEAT_MBYTE | |
2777 /* | |
2778 * Emit (if appropriate) a multi-byte character of code | |
2779 */ | |
2780 static void | |
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|
2781 regmbc(int c) |
7 | 2782 { |
2974 | 2783 if (!has_mbyte && c > 0xff) |
2784 return; | |
7 | 2785 if (regcode == JUST_CALC_SIZE) |
2786 regsize += (*mb_char2len)(c); | |
2787 else | |
2788 regcode += (*mb_char2bytes)(c, regcode); | |
2789 } | |
2790 #endif | |
2791 | |
2792 /* | |
4444 | 2793 * Insert an operator in front of already-emitted operand |
7 | 2794 * |
2795 * Means relocating the operand. | |
2796 */ | |
2797 static void | |
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|
2798 reginsert(int op, char_u *opnd) |
7 | 2799 { |
2800 char_u *src; | |
2801 char_u *dst; | |
2802 char_u *place; | |
2803 | |
2804 if (regcode == JUST_CALC_SIZE) | |
2805 { | |
2806 regsize += 3; | |
2807 return; | |
2808 } | |
2809 src = regcode; | |
2810 regcode += 3; | |
2811 dst = regcode; | |
2812 while (src > opnd) | |
2813 *--dst = *--src; | |
2814 | |
2815 place = opnd; /* Op node, where operand used to be. */ | |
2816 *place++ = op; | |
2817 *place++ = NUL; | |
2818 *place = NUL; | |
2819 } | |
2820 | |
2821 /* | |
4444 | 2822 * Insert an operator in front of already-emitted operand. |
4579
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2823 * Add a number to the operator. |
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2824 */ |
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2825 static void |
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|
2826 reginsert_nr(int op, long val, char_u *opnd) |
4579
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2827 { |
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2828 char_u *src; |
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2829 char_u *dst; |
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|
2830 char_u *place; |
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|
2831 |
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2832 if (regcode == JUST_CALC_SIZE) |
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2833 { |
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2834 regsize += 7; |
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2835 return; |
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2836 } |
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2837 src = regcode; |
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2838 regcode += 7; |
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|
2839 dst = regcode; |
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2840 while (src > opnd) |
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2841 *--dst = *--src; |
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2842 |
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2843 place = opnd; /* Op node, where operand used to be. */ |
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2844 *place++ = op; |
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2845 *place++ = NUL; |
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2846 *place++ = NUL; |
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|
2847 place = re_put_long(place, (long_u)val); |
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2848 } |
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2849 |
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2850 /* |
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2851 * Insert an operator in front of already-emitted operand. |
7 | 2852 * The operator has the given limit values as operands. Also set next pointer. |
2853 * | |
2854 * Means relocating the operand. | |
2855 */ | |
2856 static void | |
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|
2857 reginsert_limits( |
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|
2858 int op, |
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2859 long minval, |
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|
2860 long maxval, |
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diff
changeset
|
2861 char_u *opnd) |
7 | 2862 { |
2863 char_u *src; | |
2864 char_u *dst; | |
2865 char_u *place; | |
2866 | |
2867 if (regcode == JUST_CALC_SIZE) | |
2868 { | |
2869 regsize += 11; | |
2870 return; | |
2871 } | |
2872 src = regcode; | |
2873 regcode += 11; | |
2874 dst = regcode; | |
2875 while (src > opnd) | |
2876 *--dst = *--src; | |
2877 | |
2878 place = opnd; /* Op node, where operand used to be. */ | |
2879 *place++ = op; | |
2880 *place++ = NUL; | |
2881 *place++ = NUL; | |
2882 place = re_put_long(place, (long_u)minval); | |
2883 place = re_put_long(place, (long_u)maxval); | |
2884 regtail(opnd, place); | |
2885 } | |
2886 | |
2887 /* | |
2888 * Write a long as four bytes at "p" and return pointer to the next char. | |
2889 */ | |
2890 static char_u * | |
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|
2891 re_put_long(char_u *p, long_u val) |
7 | 2892 { |
2893 *p++ = (char_u) ((val >> 24) & 0377); | |
2894 *p++ = (char_u) ((val >> 16) & 0377); | |
2895 *p++ = (char_u) ((val >> 8) & 0377); | |
2896 *p++ = (char_u) (val & 0377); | |
2897 return p; | |
2898 } | |
2899 | |
2900 /* | |
4444 | 2901 * Set the next-pointer at the end of a node chain. |
7 | 2902 */ |
2903 static void | |
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|
2904 regtail(char_u *p, char_u *val) |
7 | 2905 { |
2906 char_u *scan; | |
2907 char_u *temp; | |
2908 int offset; | |
2909 | |
2910 if (p == JUST_CALC_SIZE) | |
2911 return; | |
2912 | |
2913 /* Find last node. */ | |
2914 scan = p; | |
2915 for (;;) | |
2916 { | |
2917 temp = regnext(scan); | |
2918 if (temp == NULL) | |
2919 break; | |
2920 scan = temp; | |
2921 } | |
2922 | |
233 | 2923 if (OP(scan) == BACK) |
7 | 2924 offset = (int)(scan - val); |
2925 else | |
2926 offset = (int)(val - scan); | |
2010 | 2927 /* When the offset uses more than 16 bits it can no longer fit in the two |
2974 | 2928 * bytes available. Use a global flag to avoid having to check return |
2010 | 2929 * values in too many places. */ |
2930 if (offset > 0xffff) | |
2931 reg_toolong = TRUE; | |
2932 else | |
2933 { | |
2934 *(scan + 1) = (char_u) (((unsigned)offset >> 8) & 0377); | |
2935 *(scan + 2) = (char_u) (offset & 0377); | |
2936 } | |
7 | 2937 } |
2938 | |
2939 /* | |
4444 | 2940 * Like regtail, on item after a BRANCH; nop if none. |
7 | 2941 */ |
2942 static void | |
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|
2943 regoptail(char_u *p, char_u *val) |
7 | 2944 { |
2945 /* When op is neither BRANCH nor BRACE_COMPLEX0-9, it is "operandless" */ | |
2946 if (p == NULL || p == JUST_CALC_SIZE | |
2947 || (OP(p) != BRANCH | |
2948 && (OP(p) < BRACE_COMPLEX || OP(p) > BRACE_COMPLEX + 9))) | |
2949 return; | |
2950 regtail(OPERAND(p), val); | |
2951 } | |
2952 | |
2953 /* | |
4444 | 2954 * Functions for getting characters from the regexp input. |
7 | 2955 */ |
4444 | 2956 /* |
2957 * Start parsing at "str". | |
2958 */ | |
7 | 2959 static void |
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diff
changeset
|
2960 initchr(char_u *str) |
7 | 2961 { |
2962 regparse = str; | |
2963 prevchr_len = 0; | |
2964 curchr = prevprevchr = prevchr = nextchr = -1; | |
2965 at_start = TRUE; | |
2966 prev_at_start = FALSE; | |
2967 } | |
2968 | |
4444 | 2969 /* |
4679
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|
2970 * Save the current parse state, so that it can be restored and parsing |
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|
2971 * starts in the same state again. |
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|
2972 */ |
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|
2973 static void |
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|
2974 save_parse_state(parse_state_T *ps) |
4679
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2975 { |
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|
2976 ps->regparse = regparse; |
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2977 ps->prevchr_len = prevchr_len; |
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2978 ps->curchr = curchr; |
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|
2979 ps->prevchr = prevchr; |
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|
2980 ps->prevprevchr = prevprevchr; |
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2981 ps->nextchr = nextchr; |
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|
2982 ps->at_start = at_start; |
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|
2983 ps->prev_at_start = prev_at_start; |
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|
2984 ps->regnpar = regnpar; |
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|
2985 } |
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2986 |
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|
2987 /* |
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|
2988 * Restore a previously saved parse state. |
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|
2989 */ |
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|
2990 static void |
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|
2991 restore_parse_state(parse_state_T *ps) |
4679
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2992 { |
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2993 regparse = ps->regparse; |
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2994 prevchr_len = ps->prevchr_len; |
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|
2995 curchr = ps->curchr; |
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|
2996 prevchr = ps->prevchr; |
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|
2997 prevprevchr = ps->prevprevchr; |
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|
2998 nextchr = ps->nextchr; |
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|
2999 at_start = ps->at_start; |
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3000 prev_at_start = ps->prev_at_start; |
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3001 regnpar = ps->regnpar; |
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3002 } |
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3003 |
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3004 |
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|
3005 /* |
4444 | 3006 * Get the next character without advancing. |
3007 */ | |
7 | 3008 static int |
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diff
changeset
|
3009 peekchr(void) |
7 | 3010 { |
167 | 3011 static int after_slash = FALSE; |
3012 | |
7 | 3013 if (curchr == -1) |
3014 { | |
3015 switch (curchr = regparse[0]) | |
3016 { | |
3017 case '.': | |
3018 case '[': | |
3019 case '~': | |
3020 /* magic when 'magic' is on */ | |
3021 if (reg_magic >= MAGIC_ON) | |
3022 curchr = Magic(curchr); | |
3023 break; | |
3024 case '(': | |
3025 case ')': | |
3026 case '{': | |
3027 case '%': | |
3028 case '+': | |
3029 case '=': | |
3030 case '?': | |
3031 case '@': | |
3032 case '!': | |
3033 case '&': | |
3034 case '|': | |
3035 case '<': | |
3036 case '>': | |
3037 case '#': /* future ext. */ | |
3038 case '"': /* future ext. */ | |
3039 case '\'': /* future ext. */ | |
3040 case ',': /* future ext. */ | |
3041 case '-': /* future ext. */ | |
3042 case ':': /* future ext. */ | |
3043 case ';': /* future ext. */ | |
3044 case '`': /* future ext. */ | |
3045 case '/': /* Can't be used in / command */ | |
3046 /* magic only after "\v" */ | |
3047 if (reg_magic == MAGIC_ALL) | |
3048 curchr = Magic(curchr); | |
3049 break; | |
3050 case '*': | |
167 | 3051 /* * is not magic as the very first character, eg "?*ptr", when |
3052 * after '^', eg "/^*ptr" and when after "\(", "\|", "\&". But | |
3053 * "\(\*" is not magic, thus must be magic if "after_slash" */ | |
3054 if (reg_magic >= MAGIC_ON | |
3055 && !at_start | |
3056 && !(prev_at_start && prevchr == Magic('^')) | |
3057 && (after_slash | |
3058 || (prevchr != Magic('(') | |
3059 && prevchr != Magic('&') | |
3060 && prevchr != Magic('|')))) | |
7 | 3061 curchr = Magic('*'); |
3062 break; | |
3063 case '^': | |
3064 /* '^' is only magic as the very first character and if it's after | |
3065 * "\(", "\|", "\&' or "\n" */ | |
3066 if (reg_magic >= MAGIC_OFF | |
3067 && (at_start | |
3068 || reg_magic == MAGIC_ALL | |
3069 || prevchr == Magic('(') | |
3070 || prevchr == Magic('|') | |
3071 || prevchr == Magic('&') | |
3072 || prevchr == Magic('n') | |
3073 || (no_Magic(prevchr) == '(' | |
3074 && prevprevchr == Magic('%')))) | |
3075 { | |
3076 curchr = Magic('^'); | |
3077 at_start = TRUE; | |
3078 prev_at_start = FALSE; | |
3079 } | |
3080 break; | |
3081 case '$': | |
3082 /* '$' is only magic as the very last char and if it's in front of | |
3083 * either "\|", "\)", "\&", or "\n" */ | |
3084 if (reg_magic >= MAGIC_OFF) | |
3085 { | |
3086 char_u *p = regparse + 1; | |
6041 | 3087 int is_magic_all = (reg_magic == MAGIC_ALL); |
3088 | |
3089 /* ignore \c \C \m \M \v \V and \Z after '$' */ | |
7 | 3090 while (p[0] == '\\' && (p[1] == 'c' || p[1] == 'C' |
6041 | 3091 || p[1] == 'm' || p[1] == 'M' |
3092 || p[1] == 'v' || p[1] == 'V' || p[1] == 'Z')) | |
3093 { | |
3094 if (p[1] == 'v') | |
3095 is_magic_all = TRUE; | |
3096 else if (p[1] == 'm' || p[1] == 'M' || p[1] == 'V') | |
3097 is_magic_all = FALSE; | |
7 | 3098 p += 2; |
6041 | 3099 } |
7 | 3100 if (p[0] == NUL |
3101 || (p[0] == '\\' | |
3102 && (p[1] == '|' || p[1] == '&' || p[1] == ')' | |
3103 || p[1] == 'n')) | |
6041 | 3104 || (is_magic_all |
3105 && (p[0] == '|' || p[0] == '&' || p[0] == ')')) | |
7 | 3106 || reg_magic == MAGIC_ALL) |
3107 curchr = Magic('$'); | |
3108 } | |
3109 break; | |
3110 case '\\': | |
3111 { | |
3112 int c = regparse[1]; | |
3113 | |
3114 if (c == NUL) | |
3115 curchr = '\\'; /* trailing '\' */ | |
3116 else if ( | |
3117 #ifdef EBCDIC | |
3118 vim_strchr(META, c) | |
3119 #else | |
3120 c <= '~' && META_flags[c] | |
3121 #endif | |
3122 ) | |
3123 { | |
3124 /* | |
3125 * META contains everything that may be magic sometimes, | |
3126 * except ^ and $ ("\^" and "\$" are only magic after | |
6830 | 3127 * "\V"). We now fetch the next character and toggle its |
7 | 3128 * magicness. Therefore, \ is so meta-magic that it is |
3129 * not in META. | |
3130 */ | |
3131 curchr = -1; | |
3132 prev_at_start = at_start; | |
3133 at_start = FALSE; /* be able to say "/\*ptr" */ | |
3134 ++regparse; | |
167 | 3135 ++after_slash; |
7 | 3136 peekchr(); |
3137 --regparse; | |
167 | 3138 --after_slash; |
7 | 3139 curchr = toggle_Magic(curchr); |
3140 } | |
3141 else if (vim_strchr(REGEXP_ABBR, c)) | |
3142 { | |
3143 /* | |
3144 * Handle abbreviations, like "\t" for TAB -- webb | |
3145 */ | |
3146 curchr = backslash_trans(c); | |
3147 } | |
3148 else if (reg_magic == MAGIC_NONE && (c == '$' || c == '^')) | |
3149 curchr = toggle_Magic(c); | |
3150 else | |
3151 { | |
3152 /* | |
3153 * Next character can never be (made) magic? | |
3154 * Then backslashing it won't do anything. | |
3155 */ | |
3156 #ifdef FEAT_MBYTE | |
3157 if (has_mbyte) | |
3158 curchr = (*mb_ptr2char)(regparse + 1); | |
3159 else | |
3160 #endif | |
3161 curchr = c; | |
3162 } | |
3163 break; | |
3164 } | |
3165 | |
3166 #ifdef FEAT_MBYTE | |
3167 default: | |
3168 if (has_mbyte) | |
3169 curchr = (*mb_ptr2char)(regparse); | |
3170 #endif | |
3171 } | |
3172 } | |
3173 | |
3174 return curchr; | |
3175 } | |
3176 | |
3177 /* | |
3178 * Eat one lexed character. Do this in a way that we can undo it. | |
3179 */ | |
3180 static void | |
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3181 skipchr(void) |
7 | 3182 { |
3183 /* peekchr() eats a backslash, do the same here */ | |
3184 if (*regparse == '\\') | |
3185 prevchr_len = 1; | |
3186 else | |
3187 prevchr_len = 0; | |
3188 if (regparse[prevchr_len] != NUL) | |
3189 { | |
3190 #ifdef FEAT_MBYTE | |
714 | 3191 if (enc_utf8) |
1449 | 3192 /* exclude composing chars that mb_ptr2len does include */ |
3193 prevchr_len += utf_ptr2len(regparse + prevchr_len); | |
714 | 3194 else if (has_mbyte) |
474 | 3195 prevchr_len += (*mb_ptr2len)(regparse + prevchr_len); |
7 | 3196 else |
3197 #endif | |
3198 ++prevchr_len; | |
3199 } | |
3200 regparse += prevchr_len; | |
3201 prev_at_start = at_start; | |
3202 at_start = FALSE; | |
3203 prevprevchr = prevchr; | |
3204 prevchr = curchr; | |
3205 curchr = nextchr; /* use previously unget char, or -1 */ | |
3206 nextchr = -1; | |
3207 } | |
3208 | |
3209 /* | |
3210 * Skip a character while keeping the value of prev_at_start for at_start. | |
3211 * prevchr and prevprevchr are also kept. | |
3212 */ | |
3213 static void | |
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changeset
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3214 skipchr_keepstart(void) |
7 | 3215 { |
3216 int as = prev_at_start; | |
3217 int pr = prevchr; | |
3218 int prpr = prevprevchr; | |
3219 | |
3220 skipchr(); | |
3221 at_start = as; | |
3222 prevchr = pr; | |
3223 prevprevchr = prpr; | |
3224 } | |
3225 | |
4444 | 3226 /* |
3227 * Get the next character from the pattern. We know about magic and such, so | |
3228 * therefore we need a lexical analyzer. | |
3229 */ | |
7 | 3230 static int |
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3231 getchr(void) |
7 | 3232 { |
3233 int chr = peekchr(); | |
3234 | |
3235 skipchr(); | |
3236 return chr; | |
3237 } | |
3238 | |
3239 /* | |
3240 * put character back. Works only once! | |
3241 */ | |
3242 static void | |
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3243 ungetchr(void) |
7 | 3244 { |
3245 nextchr = curchr; | |
3246 curchr = prevchr; | |
3247 prevchr = prevprevchr; | |
3248 at_start = prev_at_start; | |
3249 prev_at_start = FALSE; | |
3250 | |
3251 /* Backup regparse, so that it's at the same position as before the | |
3252 * getchr(). */ | |
3253 regparse -= prevchr_len; | |
3254 } | |
3255 | |
3256 /* | |
29 | 3257 * Get and return the value of the hex string at the current position. |
3258 * Return -1 if there is no valid hex number. | |
3259 * The position is updated: | |
24 | 3260 * blahblah\%x20asdf |
856 | 3261 * before-^ ^-after |
24 | 3262 * The parameter controls the maximum number of input characters. This will be |
3263 * 2 when reading a \%x20 sequence and 4 when reading a \%u20AC sequence. | |
3264 */ | |
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3265 static long |
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|
3266 gethexchrs(int maxinputlen) |
24 | 3267 { |
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3268 long_u nr = 0; |
24 | 3269 int c; |
3270 int i; | |
3271 | |
3272 for (i = 0; i < maxinputlen; ++i) | |
3273 { | |
3274 c = regparse[0]; | |
3275 if (!vim_isxdigit(c)) | |
3276 break; | |
3277 nr <<= 4; | |
3278 nr |= hex2nr(c); | |
3279 ++regparse; | |
3280 } | |
3281 | |
3282 if (i == 0) | |
3283 return -1; | |
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3284 return (long)nr; |
24 | 3285 } |
3286 | |
3287 /* | |
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3288 * Get and return the value of the decimal string immediately after the |
24 | 3289 * current position. Return -1 for invalid. Consumes all digits. |
3290 */ | |
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3291 static long |
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diff
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|
3292 getdecchrs(void) |
24 | 3293 { |
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3294 long_u nr = 0; |
24 | 3295 int c; |
3296 int i; | |
3297 | |
3298 for (i = 0; ; ++i) | |
3299 { | |
3300 c = regparse[0]; | |
3301 if (c < '0' || c > '9') | |
3302 break; | |
3303 nr *= 10; | |
3304 nr += c - '0'; | |
3305 ++regparse; | |
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3306 curchr = -1; /* no longer valid */ |
24 | 3307 } |
3308 | |
3309 if (i == 0) | |
3310 return -1; | |
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changeset
|
3311 return (long)nr; |
24 | 3312 } |
3313 | |
3314 /* | |
3315 * get and return the value of the octal string immediately after the current | |
3316 * position. Return -1 for invalid, or 0-255 for valid. Smart enough to handle | |
3317 * numbers > 377 correctly (for example, 400 is treated as 40) and doesn't | |
3318 * treat 8 or 9 as recognised characters. Position is updated: | |
3319 * blahblah\%o210asdf | |
856 | 3320 * before-^ ^-after |
24 | 3321 */ |
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3322 static long |
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diff
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|
3323 getoctchrs(void) |
24 | 3324 { |
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changeset
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3325 long_u nr = 0; |
24 | 3326 int c; |
3327 int i; | |
3328 | |
3329 for (i = 0; i < 3 && nr < 040; ++i) | |
3330 { | |
3331 c = regparse[0]; | |
3332 if (c < '0' || c > '7') | |
3333 break; | |
3334 nr <<= 3; | |
3335 nr |= hex2nr(c); | |
3336 ++regparse; | |
3337 } | |
3338 | |
3339 if (i == 0) | |
3340 return -1; | |
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changeset
|
3341 return (long)nr; |
24 | 3342 } |
3343 | |
3344 /* | |
3345 * Get a number after a backslash that is inside []. | |
3346 * When nothing is recognized return a backslash. | |
3347 */ | |
3348 static int | |
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diff
changeset
|
3349 coll_get_char(void) |
24 | 3350 { |
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3351 long nr = -1; |
24 | 3352 |
3353 switch (*regparse++) | |
3354 { | |
3355 case 'd': nr = getdecchrs(); break; | |
3356 case 'o': nr = getoctchrs(); break; | |
3357 case 'x': nr = gethexchrs(2); break; | |
3358 case 'u': nr = gethexchrs(4); break; | |
3359 case 'U': nr = gethexchrs(8); break; | |
3360 } | |
3361 if (nr < 0) | |
3362 { | |
3363 /* If getting the number fails be backwards compatible: the character | |
3364 * is a backslash. */ | |
3365 --regparse; | |
3366 nr = '\\'; | |
3367 } | |
3368 return nr; | |
3369 } | |
3370 | |
3371 /* | |
7 | 3372 * read_limits - Read two integers to be taken as a minimum and maximum. |
3373 * If the first character is '-', then the range is reversed. | |
3374 * Should end with 'end'. If minval is missing, zero is default, if maxval is | |
3375 * missing, a very big number is the default. | |
3376 */ | |
3377 static int | |
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diff
changeset
|
3378 read_limits(long *minval, long *maxval) |
7 | 3379 { |
3380 int reverse = FALSE; | |
3381 char_u *first_char; | |
3382 long tmp; | |
3383 | |
3384 if (*regparse == '-') | |
3385 { | |
3386 /* Starts with '-', so reverse the range later */ | |
3387 regparse++; | |
3388 reverse = TRUE; | |
3389 } | |
3390 first_char = regparse; | |
3391 *minval = getdigits(®parse); | |
3392 if (*regparse == ',') /* There is a comma */ | |
3393 { | |
3394 if (vim_isdigit(*++regparse)) | |
3395 *maxval = getdigits(®parse); | |
3396 else | |
3397 *maxval = MAX_LIMIT; | |
3398 } | |
3399 else if (VIM_ISDIGIT(*first_char)) | |
3400 *maxval = *minval; /* It was \{n} or \{-n} */ | |
3401 else | |
3402 *maxval = MAX_LIMIT; /* It was \{} or \{-} */ | |
3403 if (*regparse == '\\') | |
3404 regparse++; /* Allow either \{...} or \{...\} */ | |
167 | 3405 if (*regparse != '}') |
7 | 3406 { |
3407 sprintf((char *)IObuff, _("E554: Syntax error in %s{...}"), | |
3408 reg_magic == MAGIC_ALL ? "" : "\\"); | |
3409 EMSG_RET_FAIL(IObuff); | |
3410 } | |
3411 | |
3412 /* | |
3413 * Reverse the range if there was a '-', or make sure it is in the right | |
3414 * order otherwise. | |
3415 */ | |
3416 if ((!reverse && *minval > *maxval) || (reverse && *minval < *maxval)) | |
3417 { | |
3418 tmp = *minval; | |
3419 *minval = *maxval; | |
3420 *maxval = tmp; | |
3421 } | |
3422 skipchr(); /* let's be friends with the lexer again */ | |
3423 return OK; | |
3424 } | |
3425 | |
3426 /* | |
3427 * vim_regexec and friends | |
3428 */ | |
3429 | |
3430 /* | |
3431 * Global work variables for vim_regexec(). | |
3432 */ | |
3433 | |
3434 /* | |
3435 * Structure used to save the current input state, when it needs to be | |
3436 * restored after trying a match. Used by reg_save() and reg_restore(). | |
233 | 3437 * Also stores the length of "backpos". |
7 | 3438 */ |
3439 typedef struct | |
3440 { | |
3441 union | |
3442 { | |
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3443 char_u *ptr; /* rex.input pointer, for single-line regexp */ |
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3444 lpos_T pos; /* rex.input pos, for multi-line regexp */ |
7 | 3445 } rs_u; |
233 | 3446 int rs_len; |
7 | 3447 } regsave_T; |
3448 | |
3449 /* struct to save start/end pointer/position in for \(\) */ | |
3450 typedef struct | |
3451 { | |
3452 union | |
3453 { | |
3454 char_u *ptr; | |
3455 lpos_T pos; | |
3456 } se_u; | |
3457 } save_se_T; | |
3458 | |
1579 | 3459 /* used for BEHIND and NOBEHIND matching */ |
3460 typedef struct regbehind_S | |
3461 { | |
3462 regsave_T save_after; | |
3463 regsave_T save_behind; | |
1602 | 3464 int save_need_clear_subexpr; |
1579 | 3465 save_se_T save_start[NSUBEXP]; |
3466 save_se_T save_end[NSUBEXP]; | |
3467 } regbehind_T; | |
3468 | |
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diff
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|
3469 static char_u *reg_getline(linenr_T lnum); |
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3470 static long bt_regexec_both(char_u *line, colnr_T col, proftime_T *tm, int *timed_out); |
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3471 static long regtry(bt_regprog_T *prog, colnr_T col, proftime_T *tm, int *timed_out); |
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3472 static void cleanup_subexpr(void); |
7 | 3473 #ifdef FEAT_SYN_HL |
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3474 static void cleanup_zsubexpr(void); |
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3475 #endif |
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3476 static void save_subexpr(regbehind_T *bp); |
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3477 static void restore_subexpr(regbehind_T *bp); |
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3478 static void reg_nextline(void); |
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3479 static void reg_save(regsave_T *save, garray_T *gap); |
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3480 static void reg_restore(regsave_T *save, garray_T *gap); |
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3481 static int reg_save_equal(regsave_T *save); |
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3482 static void save_se_multi(save_se_T *savep, lpos_T *posp); |
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3483 static void save_se_one(save_se_T *savep, char_u **pp); |
7 | 3484 |
3485 /* Save the sub-expressions before attempting a match. */ | |
3486 #define save_se(savep, posp, pp) \ | |
3487 REG_MULTI ? save_se_multi((savep), (posp)) : save_se_one((savep), (pp)) | |
3488 | |
3489 /* After a failed match restore the sub-expressions. */ | |
3490 #define restore_se(savep, posp, pp) { \ | |
3491 if (REG_MULTI) \ | |
3492 *(posp) = (savep)->se_u.pos; \ | |
3493 else \ | |
3494 *(pp) = (savep)->se_u.ptr; } | |
3495 | |
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3496 static int re_num_cmp(long_u val, char_u *scan); |
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3497 static int match_with_backref(linenr_T start_lnum, colnr_T start_col, linenr_T end_lnum, colnr_T end_col, int *bytelen); |
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3498 static int regmatch(char_u *prog, proftime_T *tm, int *timed_out); |
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3499 static int regrepeat(char_u *p, long maxcount); |
7 | 3500 |
3501 #ifdef DEBUG | |
3502 int regnarrate = 0; | |
3503 #endif | |
3504 | |
3505 /* | |
3506 * Sometimes need to save a copy of a line. Since alloc()/free() is very | |
3507 * slow, we keep one allocated piece of memory and only re-allocate it when | |
4444 | 3508 * it's too small. It's freed in bt_regexec_both() when finished. |
7 | 3509 */ |
1468 | 3510 static char_u *reg_tofree = NULL; |
7 | 3511 static unsigned reg_tofreelen; |
3512 | |
3513 /* | |
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3514 * Structure used to store the execution state of the regex engine. |
1209 | 3515 * Which ones are set depends on whether a single-line or multi-line match is |
7 | 3516 * done: |
3517 * single-line multi-line | |
3518 * reg_match ®match_T NULL | |
3519 * reg_mmatch NULL ®mmatch_T | |
3520 * reg_startp reg_match->startp <invalid> | |
3521 * reg_endp reg_match->endp <invalid> | |
3522 * reg_startpos <invalid> reg_mmatch->startpos | |
3523 * reg_endpos <invalid> reg_mmatch->endpos | |
3524 * reg_win NULL window in which to search | |
4061 | 3525 * reg_buf curbuf buffer in which to search |
7 | 3526 * reg_firstlnum <invalid> first line in which to search |
3527 * reg_maxline 0 last line nr | |
3528 * reg_line_lbr FALSE or TRUE FALSE | |
3529 */ | |
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3530 typedef struct { |
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3531 regmatch_T *reg_match; |
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3532 regmmatch_T *reg_mmatch; |
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3533 char_u **reg_startp; |
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3534 char_u **reg_endp; |
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3535 lpos_T *reg_startpos; |
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3536 lpos_T *reg_endpos; |
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3537 win_T *reg_win; |
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3538 buf_T *reg_buf; |
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3539 linenr_T reg_firstlnum; |
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3540 linenr_T reg_maxline; |
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3541 int reg_line_lbr; /* "\n" in string is line break */ |
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3542 |
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3543 // The current match-position is stord in these variables: |
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3544 linenr_T lnum; // line number, relative to first line |
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3545 char_u *line; // start of current line |
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3546 char_u *input; // current input, points into "regline" |
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3547 |
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3548 int need_clear_subexpr; // subexpressions still need to be cleared |
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3549 #ifdef FEAT_SYN_HL |
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3550 int need_clear_zsubexpr; // extmatch subexpressions still need to be |
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3551 // cleared |
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3552 #endif |
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3553 |
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3554 /* Internal copy of 'ignorecase'. It is set at each call to vim_regexec(). |
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3555 * Normally it gets the value of "rm_ic" or "rmm_ic", but when the pattern |
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3556 * contains '\c' or '\C' the value is overruled. */ |
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3557 int reg_ic; |
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3558 |
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3559 #ifdef FEAT_MBYTE |
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3560 /* Similar to "reg_ic", but only for 'combining' characters. Set with \Z |
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3561 * flag in the regexp. Defaults to false, always. */ |
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3562 int reg_icombine; |
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3563 #endif |
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3564 |
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3565 /* Copy of "rmm_maxcol": maximum column to search for a match. Zero when |
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3566 * there is no maximum. */ |
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3567 colnr_T reg_maxcol; |
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3568 |
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3569 // State for the NFA engine regexec. |
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3570 int nfa_has_zend; // NFA regexp \ze operator encountered. |
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3571 int nfa_has_backref; // NFA regexp \1 .. \9 encountered. |
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3572 int nfa_nsubexpr; // Number of sub expressions actually being used |
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3573 // during execution. 1 if only the whole match |
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3574 // (subexpr 0) is used. |
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3575 // listid is global, so that it increases on recursive calls to |
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3576 // nfa_regmatch(), which means we don't have to clear the lastlist field of |
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3577 // all the states. |
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3578 int nfa_listid; |
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3579 int nfa_alt_listid; |
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3580 |
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3581 #ifdef FEAT_SYN_HL |
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3582 int nfa_has_zsubexpr; // NFA regexp has \z( ), set zsubexpr. |
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3583 #endif |
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3584 } regexec_T; |
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3585 |
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3586 static regexec_T rex; |
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3587 static int rex_in_use = FALSE; |
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3588 |
7 | 3589 |
270 | 3590 /* Values for rs_state in regitem_T. */ |
3591 typedef enum regstate_E | |
3592 { | |
3593 RS_NOPEN = 0 /* NOPEN and NCLOSE */ | |
3594 , RS_MOPEN /* MOPEN + [0-9] */ | |
3595 , RS_MCLOSE /* MCLOSE + [0-9] */ | |
3596 #ifdef FEAT_SYN_HL | |
3597 , RS_ZOPEN /* ZOPEN + [0-9] */ | |
3598 , RS_ZCLOSE /* ZCLOSE + [0-9] */ | |
3599 #endif | |
3600 , RS_BRANCH /* BRANCH */ | |
3601 , RS_BRCPLX_MORE /* BRACE_COMPLEX and trying one more match */ | |
3602 , RS_BRCPLX_LONG /* BRACE_COMPLEX and trying longest match */ | |
3603 , RS_BRCPLX_SHORT /* BRACE_COMPLEX and trying shortest match */ | |
3604 , RS_NOMATCH /* NOMATCH */ | |
3605 , RS_BEHIND1 /* BEHIND / NOBEHIND matching rest */ | |
3606 , RS_BEHIND2 /* BEHIND / NOBEHIND matching behind part */ | |
3607 , RS_STAR_LONG /* STAR/PLUS/BRACE_SIMPLE longest match */ | |
3608 , RS_STAR_SHORT /* STAR/PLUS/BRACE_SIMPLE shortest match */ | |
3609 } regstate_T; | |
3610 | |
3611 /* | |
3612 * When there are alternatives a regstate_T is put on the regstack to remember | |
3613 * what we are doing. | |
3614 * Before it may be another type of item, depending on rs_state, to remember | |
3615 * more things. | |
3616 */ | |
3617 typedef struct regitem_S | |
3618 { | |
3619 regstate_T rs_state; /* what we are doing, one of RS_ above */ | |
3620 char_u *rs_scan; /* current node in program */ | |
3621 union | |
3622 { | |
3623 save_se_T sesave; | |
3624 regsave_T regsave; | |
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3625 } rs_un; /* room for saving rex.input */ |
1579 | 3626 short rs_no; /* submatch nr or BEHIND/NOBEHIND */ |
270 | 3627 } regitem_T; |
3628 | |
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3629 static regitem_T *regstack_push(regstate_T state, char_u *scan); |
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3630 static void regstack_pop(char_u **scan); |
270 | 3631 |
3632 /* used for STAR, PLUS and BRACE_SIMPLE matching */ | |
3633 typedef struct regstar_S | |
3634 { | |
3635 int nextb; /* next byte */ | |
3636 int nextb_ic; /* next byte reverse case */ | |
3637 long count; | |
3638 long minval; | |
3639 long maxval; | |
3640 } regstar_T; | |
3641 | |
3642 /* used to store input position when a BACK was encountered, so that we now if | |
3643 * we made any progress since the last time. */ | |
3644 typedef struct backpos_S | |
3645 { | |
3646 char_u *bp_scan; /* "scan" where BACK was encountered */ | |
3647 regsave_T bp_pos; /* last input position */ | |
3648 } backpos_T; | |
3649 | |
3650 /* | |
1520 | 3651 * "regstack" and "backpos" are used by regmatch(). They are kept over calls |
3652 * to avoid invoking malloc() and free() often. | |
3653 * "regstack" is a stack with regitem_T items, sometimes preceded by regstar_T | |
3654 * or regbehind_T. | |
3655 * "backpos_T" is a table with backpos_T for BACK | |
270 | 3656 */ |
1520 | 3657 static garray_T regstack = {0, 0, 0, 0, NULL}; |
3658 static garray_T backpos = {0, 0, 0, 0, NULL}; | |
3659 | |
3660 /* | |
3661 * Both for regstack and backpos tables we use the following strategy of | |
3662 * allocation (to reduce malloc/free calls): | |
3663 * - Initial size is fairly small. | |
3664 * - When needed, the tables are grown bigger (8 times at first, double after | |
3665 * that). | |
3666 * - After executing the match we free the memory only if the array has grown. | |
3667 * Thus the memory is kept allocated when it's at the initial size. | |
3668 * This makes it fast while not keeping a lot of memory allocated. | |
3669 * A three times speed increase was observed when using many simple patterns. | |
3670 */ | |
3671 #define REGSTACK_INITIAL 2048 | |
3672 #define BACKPOS_INITIAL 64 | |
3673 | |
3674 #if defined(EXITFREE) || defined(PROTO) | |
3675 void | |
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|
3676 free_regexp_stuff(void) |
1520 | 3677 { |
3678 ga_clear(®stack); | |
3679 ga_clear(&backpos); | |
3680 vim_free(reg_tofree); | |
3681 vim_free(reg_prev_sub); | |
3682 } | |
3683 #endif | |
270 | 3684 |
7 | 3685 /* |
3686 * Get pointer to the line "lnum", which is relative to "reg_firstlnum". | |
3687 */ | |
3688 static char_u * | |
7833
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3689 reg_getline(linenr_T lnum) |
7 | 3690 { |
3691 /* when looking behind for a match/no-match lnum is negative. But we | |
3692 * can't go before line 1 */ | |
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3693 if (rex.reg_firstlnum + lnum < 1) |
7 | 3694 return NULL; |
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3695 if (lnum > rex.reg_maxline) |
481 | 3696 /* Must have matched the "\n" in the last line. */ |
3697 return (char_u *)""; | |
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3698 return ml_get_buf(rex.reg_buf, rex.reg_firstlnum + lnum, FALSE); |
7 | 3699 } |
3700 | |
3701 static regsave_T behind_pos; | |
3702 | |
3703 #ifdef FEAT_SYN_HL | |
3704 static char_u *reg_startzp[NSUBEXP]; /* Workspace to mark beginning */ | |
3705 static char_u *reg_endzp[NSUBEXP]; /* and end of \z(...\) matches */ | |
3706 static lpos_T reg_startzpos[NSUBEXP]; /* idem, beginning pos */ | |
3707 static lpos_T reg_endzpos[NSUBEXP]; /* idem, end pos */ | |
3708 #endif | |
3709 | |
3710 /* TRUE if using multi-line regexp. */ | |
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3711 #define REG_MULTI (rex.reg_match == NULL) |
4444 | 3712 |
7 | 3713 /* |
3714 * Match a regexp against a string. | |
3715 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
3716 * Uses curbuf for line count and 'iskeyword'. | |
5838 | 3717 * if "line_lbr" is TRUE consider a "\n" in "line" to be a line break. |
7 | 3718 * |
6390 | 3719 * Returns 0 for failure, number of lines contained in the match otherwise. |
7 | 3720 */ |
4444 | 3721 static int |
7833
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3722 bt_regexec_nl( |
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3723 regmatch_T *rmp, |
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3724 char_u *line, /* string to match against */ |
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3725 colnr_T col, /* column to start looking for match */ |
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3726 int line_lbr) |
7 | 3727 { |
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3728 rex.reg_match = rmp; |
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3729 rex.reg_mmatch = NULL; |
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3730 rex.reg_maxline = 0; |
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3731 rex.reg_line_lbr = line_lbr; |
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3732 rex.reg_buf = curbuf; |
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3733 rex.reg_win = NULL; |
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3734 rex.reg_ic = rmp->rm_ic; |
7 | 3735 #ifdef FEAT_MBYTE |
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3736 rex.reg_icombine = FALSE; |
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3737 #endif |
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3738 rex.reg_maxcol = 0; |
6390 | 3739 |
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3740 return bt_regexec_both(line, col, NULL, NULL); |
7 | 3741 } |
3742 | |
3743 /* | |
3744 * Match a regexp against multiple lines. | |
3745 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
3746 * Uses curbuf for line count and 'iskeyword'. | |
3747 * | |
3748 * Return zero if there is no match. Return number of lines contained in the | |
3749 * match otherwise. | |
3750 */ | |
4444 | 3751 static long |
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3752 bt_regexec_multi( |
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3753 regmmatch_T *rmp, |
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3754 win_T *win, /* window in which to search or NULL */ |
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3755 buf_T *buf, /* buffer in which to search */ |
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3756 linenr_T lnum, /* nr of line to start looking for match */ |
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3757 colnr_T col, /* column to start looking for match */ |
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3758 proftime_T *tm, /* timeout limit or NULL */ |
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3759 int *timed_out) /* flag set on timeout or NULL */ |
7 | 3760 { |
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3761 rex.reg_match = NULL; |
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3762 rex.reg_mmatch = rmp; |
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3763 rex.reg_buf = buf; |
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3764 rex.reg_win = win; |
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3765 rex.reg_firstlnum = lnum; |
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3766 rex.reg_maxline = rex.reg_buf->b_ml.ml_line_count - lnum; |
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3767 rex.reg_line_lbr = FALSE; |
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3768 rex.reg_ic = rmp->rmm_ic; |
7 | 3769 #ifdef FEAT_MBYTE |
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3770 rex.reg_icombine = FALSE; |
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3771 #endif |
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3772 rex.reg_maxcol = rmp->rmm_maxcol; |
7 | 3773 |
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3774 return bt_regexec_both(NULL, col, tm, timed_out); |
7 | 3775 } |
3776 | |
3777 /* | |
3778 * Match a regexp against a string ("line" points to the string) or multiple | |
3779 * lines ("line" is NULL, use reg_getline()). | |
6390 | 3780 * Returns 0 for failure, number of lines contained in the match otherwise. |
7 | 3781 */ |
3782 static long | |
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3783 bt_regexec_both( |
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3784 char_u *line, |
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3785 colnr_T col, /* column to start looking for match */ |
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3786 proftime_T *tm, /* timeout limit or NULL */ |
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3787 int *timed_out) /* flag set on timeout or NULL */ |
7 | 3788 { |
6390 | 3789 bt_regprog_T *prog; |
3790 char_u *s; | |
3791 long retval = 0L; | |
7 | 3792 |
1520 | 3793 /* Create "regstack" and "backpos" if they are not allocated yet. |
3794 * We allocate *_INITIAL amount of bytes first and then set the grow size | |
3795 * to much bigger value to avoid many malloc calls in case of deep regular | |
3796 * expressions. */ | |
3797 if (regstack.ga_data == NULL) | |
3798 { | |
3799 /* Use an item size of 1 byte, since we push different things | |
3800 * onto the regstack. */ | |
3801 ga_init2(®stack, 1, REGSTACK_INITIAL); | |
7009 | 3802 (void)ga_grow(®stack, REGSTACK_INITIAL); |
1520 | 3803 regstack.ga_growsize = REGSTACK_INITIAL * 8; |
3804 } | |
3805 | |
3806 if (backpos.ga_data == NULL) | |
3807 { | |
3808 ga_init2(&backpos, sizeof(backpos_T), BACKPOS_INITIAL); | |
7009 | 3809 (void)ga_grow(&backpos, BACKPOS_INITIAL); |
1520 | 3810 backpos.ga_growsize = BACKPOS_INITIAL * 8; |
3811 } | |
270 | 3812 |
7 | 3813 if (REG_MULTI) |
3814 { | |
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3815 prog = (bt_regprog_T *)rex.reg_mmatch->regprog; |
7 | 3816 line = reg_getline((linenr_T)0); |
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3817 rex.reg_startpos = rex.reg_mmatch->startpos; |
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3818 rex.reg_endpos = rex.reg_mmatch->endpos; |
7 | 3819 } |
3820 else | |
3821 { | |
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3822 prog = (bt_regprog_T *)rex.reg_match->regprog; |
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3823 rex.reg_startp = rex.reg_match->startp; |
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3824 rex.reg_endp = rex.reg_match->endp; |
7 | 3825 } |
3826 | |
3827 /* Be paranoid... */ | |
3828 if (prog == NULL || line == NULL) | |
3829 { | |
3830 EMSG(_(e_null)); | |
3831 goto theend; | |
3832 } | |
3833 | |
3834 /* Check validity of program. */ | |
3835 if (prog_magic_wrong()) | |
3836 goto theend; | |
3837 | |
410 | 3838 /* If the start column is past the maximum column: no need to try. */ |
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3839 if (rex.reg_maxcol > 0 && col >= rex.reg_maxcol) |
410 | 3840 goto theend; |
3841 | |
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3842 /* If pattern contains "\c" or "\C": overrule value of rex.reg_ic */ |
7 | 3843 if (prog->regflags & RF_ICASE) |
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3844 rex.reg_ic = TRUE; |
7 | 3845 else if (prog->regflags & RF_NOICASE) |
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3846 rex.reg_ic = FALSE; |
7 | 3847 |
3848 #ifdef FEAT_MBYTE | |
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|
3849 /* If pattern contains "\Z" overrule value of rex.reg_icombine */ |
7 | 3850 if (prog->regflags & RF_ICOMBINE) |
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parents:
10187
diff
changeset
|
3851 rex.reg_icombine = TRUE; |
7 | 3852 #endif |
3853 | |
3854 /* If there is a "must appear" string, look for it. */ | |
3855 if (prog->regmust != NULL) | |
3856 { | |
3857 int c; | |
3858 | |
3859 #ifdef FEAT_MBYTE | |
3860 if (has_mbyte) | |
3861 c = (*mb_ptr2char)(prog->regmust); | |
3862 else | |
3863 #endif | |
3864 c = *prog->regmust; | |
3865 s = line + col; | |
170 | 3866 |
3867 /* | |
3868 * This is used very often, esp. for ":global". Use three versions of | |
3869 * the loop to avoid overhead of conditions. | |
3870 */ | |
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10187
diff
changeset
|
3871 if (!rex.reg_ic |
170 | 3872 #ifdef FEAT_MBYTE |
3873 && !has_mbyte | |
3874 #endif | |
3875 ) | |
3876 while ((s = vim_strbyte(s, c)) != NULL) | |
3877 { | |
3878 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
3879 break; /* Found it. */ | |
3880 ++s; | |
3881 } | |
3882 #ifdef FEAT_MBYTE | |
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diff
changeset
|
3883 else if (!rex.reg_ic || (!enc_utf8 && mb_char2len(c) > 1)) |
170 | 3884 while ((s = vim_strchr(s, c)) != NULL) |
3885 { | |
3886 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
3887 break; /* Found it. */ | |
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changeset
|
3888 MB_PTR_ADV(s); |
170 | 3889 } |
3890 #endif | |
3891 else | |
3892 while ((s = cstrchr(s, c)) != NULL) | |
3893 { | |
3894 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
3895 break; /* Found it. */ | |
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changeset
|
3896 MB_PTR_ADV(s); |
170 | 3897 } |
7 | 3898 if (s == NULL) /* Not present. */ |
3899 goto theend; | |
3900 } | |
3901 | |
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|
3902 rex.line = line; |
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changeset
|
3903 rex.lnum = 0; |
2578 | 3904 reg_toolong = FALSE; |
7 | 3905 |
3906 /* Simplest case: Anchored match need be tried only once. */ | |
3907 if (prog->reganch) | |
3908 { | |
3909 int c; | |
3910 | |
3911 #ifdef FEAT_MBYTE | |
3912 if (has_mbyte) | |
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3913 c = (*mb_ptr2char)(rex.line + col); |
7 | 3914 else |
3915 #endif | |
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3916 c = rex.line[col]; |
7 | 3917 if (prog->regstart == NUL |
3918 || prog->regstart == c | |
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changeset
|
3919 || (rex.reg_ic && (( |
7 | 3920 #ifdef FEAT_MBYTE |
3921 (enc_utf8 && utf_fold(prog->regstart) == utf_fold(c))) | |
3922 || (c < 255 && prog->regstart < 255 && | |
3923 #endif | |
1347 | 3924 MB_TOLOWER(prog->regstart) == MB_TOLOWER(c))))) |
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changeset
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3925 retval = regtry(prog, col, tm, timed_out); |
7 | 3926 else |
3927 retval = 0; | |
3928 } | |
3929 else | |
3930 { | |
1521 | 3931 #ifdef FEAT_RELTIME |
3932 int tm_count = 0; | |
3933 #endif | |
7 | 3934 /* Messy cases: unanchored match. */ |
180 | 3935 while (!got_int) |
7 | 3936 { |
3937 if (prog->regstart != NUL) | |
3938 { | |
170 | 3939 /* Skip until the char we know it must start with. |
3940 * Used often, do some work to avoid call overhead. */ | |
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diff
changeset
|
3941 if (!rex.reg_ic |
170 | 3942 #ifdef FEAT_MBYTE |
3943 && !has_mbyte | |
3944 #endif | |
3945 ) | |
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3946 s = vim_strbyte(rex.line + col, prog->regstart); |
170 | 3947 else |
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3948 s = cstrchr(rex.line + col, prog->regstart); |
7 | 3949 if (s == NULL) |
3950 { | |
3951 retval = 0; | |
3952 break; | |
3953 } | |
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3954 col = (int)(s - rex.line); |
7 | 3955 } |
3956 | |
410 | 3957 /* Check for maximum column to try. */ |
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diff
changeset
|
3958 if (rex.reg_maxcol > 0 && col >= rex.reg_maxcol) |
410 | 3959 { |
3960 retval = 0; | |
3961 break; | |
3962 } | |
3963 | |
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3964 retval = regtry(prog, col, tm, timed_out); |
7 | 3965 if (retval > 0) |
3966 break; | |
3967 | |
3968 /* if not currently on the first line, get it again */ | |
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3969 if (rex.lnum != 0) |
7 | 3970 { |
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3971 rex.lnum = 0; |
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3972 rex.line = reg_getline((linenr_T)0); |
7 | 3973 } |
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3974 if (rex.line[col] == NUL) |
7 | 3975 break; |
3976 #ifdef FEAT_MBYTE | |
3977 if (has_mbyte) | |
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|
3978 col += (*mb_ptr2len)(rex.line + col); |
7 | 3979 else |
3980 #endif | |
3981 ++col; | |
1521 | 3982 #ifdef FEAT_RELTIME |
3983 /* Check for timeout once in a twenty times to avoid overhead. */ | |
3984 if (tm != NULL && ++tm_count == 20) | |
3985 { | |
3986 tm_count = 0; | |
3987 if (profile_passed_limit(tm)) | |
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3988 { |
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|
3989 if (timed_out != NULL) |
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3990 *timed_out = TRUE; |
1521 | 3991 break; |
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3992 } |
1521 | 3993 } |
3994 #endif | |
7 | 3995 } |
3996 } | |
3997 | |
3998 theend: | |
1520 | 3999 /* Free "reg_tofree" when it's a bit big. |
4000 * Free regstack and backpos if they are bigger than their initial size. */ | |
4001 if (reg_tofreelen > 400) | |
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changeset
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4002 VIM_CLEAR(reg_tofree); |
1520 | 4003 if (regstack.ga_maxlen > REGSTACK_INITIAL) |
4004 ga_clear(®stack); | |
4005 if (backpos.ga_maxlen > BACKPOS_INITIAL) | |
4006 ga_clear(&backpos); | |
270 | 4007 |
7 | 4008 return retval; |
4009 } | |
4010 | |
4011 #ifdef FEAT_SYN_HL | |
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diff
changeset
|
4012 static reg_extmatch_T *make_extmatch(void); |
7 | 4013 |
4014 /* | |
4015 * Create a new extmatch and mark it as referenced once. | |
4016 */ | |
4017 static reg_extmatch_T * | |
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|
4018 make_extmatch(void) |
7 | 4019 { |
4020 reg_extmatch_T *em; | |
4021 | |
4022 em = (reg_extmatch_T *)alloc_clear((unsigned)sizeof(reg_extmatch_T)); | |
4023 if (em != NULL) | |
4024 em->refcnt = 1; | |
4025 return em; | |
4026 } | |
4027 | |
4028 /* | |
4029 * Add a reference to an extmatch. | |
4030 */ | |
4031 reg_extmatch_T * | |
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diff
changeset
|
4032 ref_extmatch(reg_extmatch_T *em) |
7 | 4033 { |
4034 if (em != NULL) | |
4035 em->refcnt++; | |
4036 return em; | |
4037 } | |
4038 | |
4039 /* | |
4040 * Remove a reference to an extmatch. If there are no references left, free | |
4041 * the info. | |
4042 */ | |
4043 void | |
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changeset
|
4044 unref_extmatch(reg_extmatch_T *em) |
7 | 4045 { |
4046 int i; | |
4047 | |
4048 if (em != NULL && --em->refcnt <= 0) | |
4049 { | |
4050 for (i = 0; i < NSUBEXP; ++i) | |
4051 vim_free(em->matches[i]); | |
4052 vim_free(em); | |
4053 } | |
4054 } | |
4055 #endif | |
4056 | |
4057 /* | |
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|
4058 * regtry - try match of "prog" with at rex.line["col"]. |
7 | 4059 * Returns 0 for failure, number of lines contained in the match otherwise. |
4060 */ | |
4061 static long | |
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|
4062 regtry( |
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|
4063 bt_regprog_T *prog, |
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|
4064 colnr_T col, |
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changeset
|
4065 proftime_T *tm, /* timeout limit or NULL */ |
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|
4066 int *timed_out) /* flag set on timeout or NULL */ |
7 | 4067 { |
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|
4068 rex.input = rex.line + col; |
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changeset
|
4069 rex.need_clear_subexpr = TRUE; |
7 | 4070 #ifdef FEAT_SYN_HL |
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|
4071 // Clear the external match subpointers if necessary. |
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changeset
|
4072 rex.need_clear_zsubexpr = (prog->reghasz == REX_SET); |
7 | 4073 #endif |
4074 | |
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changeset
|
4075 if (regmatch(prog->program + 1, tm, timed_out) == 0) |
189 | 4076 return 0; |
4077 | |
4078 cleanup_subexpr(); | |
4079 if (REG_MULTI) | |
7 | 4080 { |
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diff
changeset
|
4081 if (rex.reg_startpos[0].lnum < 0) |
7 | 4082 { |
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diff
changeset
|
4083 rex.reg_startpos[0].lnum = 0; |
d76ccdacb41e
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diff
changeset
|
4084 rex.reg_startpos[0].col = col; |
189 | 4085 } |
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changeset
|
4086 if (rex.reg_endpos[0].lnum < 0) |
189 | 4087 { |
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|
4088 rex.reg_endpos[0].lnum = rex.lnum; |
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|
4089 rex.reg_endpos[0].col = (int)(rex.input - rex.line); |
7 | 4090 } |
4091 else | |
189 | 4092 /* Use line number of "\ze". */ |
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|
4093 rex.lnum = rex.reg_endpos[0].lnum; |
189 | 4094 } |
4095 else | |
4096 { | |
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changeset
|
4097 if (rex.reg_startp[0] == NULL) |
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|
4098 rex.reg_startp[0] = rex.line + col; |
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changeset
|
4099 if (rex.reg_endp[0] == NULL) |
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|
4100 rex.reg_endp[0] = rex.input; |
189 | 4101 } |
7 | 4102 #ifdef FEAT_SYN_HL |
189 | 4103 /* Package any found \z(...\) matches for export. Default is none. */ |
4104 unref_extmatch(re_extmatch_out); | |
4105 re_extmatch_out = NULL; | |
4106 | |
4107 if (prog->reghasz == REX_SET) | |
4108 { | |
4109 int i; | |
4110 | |
4111 cleanup_zsubexpr(); | |
4112 re_extmatch_out = make_extmatch(); | |
4113 for (i = 0; i < NSUBEXP; i++) | |
7 | 4114 { |
189 | 4115 if (REG_MULTI) |
7 | 4116 { |
189 | 4117 /* Only accept single line matches. */ |
4118 if (reg_startzpos[i].lnum >= 0 | |
5820 | 4119 && reg_endzpos[i].lnum == reg_startzpos[i].lnum |
4120 && reg_endzpos[i].col >= reg_startzpos[i].col) | |
189 | 4121 re_extmatch_out->matches[i] = |
4122 vim_strnsave(reg_getline(reg_startzpos[i].lnum) | |
7 | 4123 + reg_startzpos[i].col, |
189 | 4124 reg_endzpos[i].col - reg_startzpos[i].col); |
4125 } | |
4126 else | |
4127 { | |
4128 if (reg_startzp[i] != NULL && reg_endzp[i] != NULL) | |
4129 re_extmatch_out->matches[i] = | |
7 | 4130 vim_strnsave(reg_startzp[i], |
189 | 4131 (int)(reg_endzp[i] - reg_startzp[i])); |
7 | 4132 } |
4133 } | |
189 | 4134 } |
7 | 4135 #endif |
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|
4136 return 1 + rex.lnum; |
7 | 4137 } |
4138 | |
4139 #ifdef FEAT_MBYTE | |
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changeset
|
4140 static int reg_prev_class(void); |
7 | 4141 |
4142 /* | |
4143 * Get class of previous character. | |
4144 */ | |
4145 static int | |
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changeset
|
4146 reg_prev_class(void) |
7 | 4147 { |
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|
4148 if (rex.input > rex.line) |
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changeset
|
4149 return mb_get_class_buf(rex.input - 1 |
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changeset
|
4150 - (*mb_head_off)(rex.line, rex.input - 1), rex.reg_buf); |
7 | 4151 return -1; |
4152 } | |
5735 | 4153 #endif |
4154 | |
7805
0b6c37dd858d
commit https://github.com/vim/vim/commit/baaa7e9ec7398a813e21285c272fa99792642077
Christian Brabandt <cb@256bit.org>
parents:
7009
diff
changeset
|
4155 static int reg_match_visual(void); |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4156 |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4157 /* |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4158 * Return TRUE if the current rex.input position matches the Visual area. |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4159 */ |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4160 static int |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
4161 reg_match_visual(void) |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4162 { |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4163 pos_T top, bot; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4164 linenr_T lnum; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4165 colnr_T col; |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4166 win_T *wp = rex.reg_win == NULL ? curwin : rex.reg_win; |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4167 int mode; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4168 colnr_T start, end; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4169 colnr_T start2, end2; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4170 colnr_T cols; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4171 |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4172 /* Check if the buffer is the current buffer. */ |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4173 if (rex.reg_buf != curbuf || VIsual.lnum == 0) |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4174 return FALSE; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4175 |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4176 if (VIsual_active) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4177 { |
11121
778c10516955
patch 8.0.0448: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
10359
diff
changeset
|
4178 if (LT_POS(VIsual, wp->w_cursor)) |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4179 { |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4180 top = VIsual; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4181 bot = wp->w_cursor; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4182 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4183 else |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4184 { |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4185 top = wp->w_cursor; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4186 bot = VIsual; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4187 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4188 mode = VIsual_mode; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4189 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4190 else |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4191 { |
11121
778c10516955
patch 8.0.0448: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
10359
diff
changeset
|
4192 if (LT_POS(curbuf->b_visual.vi_start, curbuf->b_visual.vi_end)) |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4193 { |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4194 top = curbuf->b_visual.vi_start; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4195 bot = curbuf->b_visual.vi_end; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4196 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4197 else |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4198 { |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4199 top = curbuf->b_visual.vi_end; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4200 bot = curbuf->b_visual.vi_start; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4201 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4202 mode = curbuf->b_visual.vi_mode; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4203 } |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4204 lnum = rex.lnum + rex.reg_firstlnum; |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4205 if (lnum < top.lnum || lnum > bot.lnum) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4206 return FALSE; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4207 |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4208 if (mode == 'v') |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4209 { |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4210 col = (colnr_T)(rex.input - rex.line); |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4211 if ((lnum == top.lnum && col < top.col) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4212 || (lnum == bot.lnum && col >= bot.col + (*p_sel != 'e'))) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4213 return FALSE; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4214 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4215 else if (mode == Ctrl_V) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4216 { |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4217 getvvcol(wp, &top, &start, NULL, &end); |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4218 getvvcol(wp, &bot, &start2, NULL, &end2); |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4219 if (start2 < start) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4220 start = start2; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4221 if (end2 > end) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4222 end = end2; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4223 if (top.col == MAXCOL || bot.col == MAXCOL) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4224 end = MAXCOL; |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4225 cols = win_linetabsize(wp, rex.line, (colnr_T)(rex.input - rex.line)); |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4226 if (cols < start || cols > end - (*p_sel == 'e')) |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4227 return FALSE; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4228 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4229 return TRUE; |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4230 } |
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4231 |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4232 #define ADVANCE_REGINPUT() MB_PTR_ADV(rex.input) |
7 | 4233 |
4234 /* | |
4235 * The arguments from BRACE_LIMITS are stored here. They are actually local | |
4236 * to regmatch(), but they are here to reduce the amount of stack space used | |
4237 * (it can be called recursively many times). | |
4238 */ | |
4239 static long bl_minval; | |
4240 static long bl_maxval; | |
4241 | |
4242 /* | |
4243 * regmatch - main matching routine | |
4244 * | |
180 | 4245 * Conceptually the strategy is simple: Check to see whether the current node |
4246 * matches, push an item onto the regstack and loop to see whether the rest | |
4247 * matches, and then act accordingly. In practice we make some effort to | |
4248 * avoid using the regstack, in particular by going through "ordinary" nodes | |
4249 * (that don't need to know whether the rest of the match failed) by a nested | |
4250 * loop. | |
7 | 4251 * |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4252 * Returns TRUE when there is a match. Leaves rex.input and rex.lnum just after |
7 | 4253 * the last matched character. |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4254 * Returns FALSE when there is no match. Leaves rex.input and rex.lnum in an |
7 | 4255 * undefined state! |
4256 */ | |
4257 static int | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
4258 regmatch( |
11527
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4259 char_u *scan, /* Current node. */ |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4260 proftime_T *tm UNUSED, /* timeout limit or NULL */ |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4261 int *timed_out UNUSED) /* flag set on timeout or NULL */ |
7 | 4262 { |
180 | 4263 char_u *next; /* Next node. */ |
4264 int op; | |
4265 int c; | |
4266 regitem_T *rp; | |
4267 int no; | |
4268 int status; /* one of the RA_ values: */ | |
4269 #define RA_FAIL 1 /* something failed, abort */ | |
4270 #define RA_CONT 2 /* continue in inner loop */ | |
4271 #define RA_BREAK 3 /* break inner loop */ | |
4272 #define RA_MATCH 4 /* successful match */ | |
4273 #define RA_NOMATCH 5 /* didn't match */ | |
11527
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4274 #ifdef FEAT_RELTIME |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4275 int tm_count = 0; |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4276 #endif |
270 | 4277 |
1520 | 4278 /* Make "regstack" and "backpos" empty. They are allocated and freed in |
4444 | 4279 * bt_regexec_both() to reduce malloc()/free() calls. */ |
270 | 4280 regstack.ga_len = 0; |
4281 backpos.ga_len = 0; | |
233 | 4282 |
180 | 4283 /* |
233 | 4284 * Repeat until "regstack" is empty. |
180 | 4285 */ |
4286 for (;;) | |
4287 { | |
5310 | 4288 /* Some patterns may take a long time to match, e.g., "\([a-z]\+\)\+Q". |
4289 * Allow interrupting them with CTRL-C. */ | |
7 | 4290 fast_breakcheck(); |
4291 | |
4292 #ifdef DEBUG | |
4293 if (scan != NULL && regnarrate) | |
4294 { | |
4444 | 4295 mch_errmsg((char *)regprop(scan)); |
7 | 4296 mch_errmsg("(\n"); |
4297 } | |
4298 #endif | |
180 | 4299 |
4300 /* | |
233 | 4301 * Repeat for items that can be matched sequentially, without using the |
180 | 4302 * regstack. |
4303 */ | |
4304 for (;;) | |
7 | 4305 { |
180 | 4306 if (got_int || scan == NULL) |
4307 { | |
4308 status = RA_FAIL; | |
4309 break; | |
4310 } | |
11527
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4311 #ifdef FEAT_RELTIME |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4312 /* Check for timeout once in a 100 times to avoid overhead. */ |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4313 if (tm != NULL && ++tm_count == 100) |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4314 { |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4315 tm_count = 0; |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4316 if (profile_passed_limit(tm)) |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4317 { |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4318 if (timed_out != NULL) |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4319 *timed_out = TRUE; |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4320 status = RA_FAIL; |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4321 break; |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4322 } |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4323 } |
ac20f71e8aa4
patch 8.0.0646: the hlsearch test fails on fast systems
Christian Brabandt <cb@256bit.org>
parents:
11525
diff
changeset
|
4324 #endif |
180 | 4325 status = RA_CONT; |
4326 | |
7 | 4327 #ifdef DEBUG |
4328 if (regnarrate) | |
4329 { | |
4444 | 4330 mch_errmsg((char *)regprop(scan)); |
7 | 4331 mch_errmsg("...\n"); |
4332 # ifdef FEAT_SYN_HL | |
4333 if (re_extmatch_in != NULL) | |
4334 { | |
4335 int i; | |
4336 | |
4337 mch_errmsg(_("External submatches:\n")); | |
4338 for (i = 0; i < NSUBEXP; i++) | |
4339 { | |
4340 mch_errmsg(" \""); | |
4341 if (re_extmatch_in->matches[i] != NULL) | |
4444 | 4342 mch_errmsg((char *)re_extmatch_in->matches[i]); |
7 | 4343 mch_errmsg("\"\n"); |
4344 } | |
4345 } | |
4346 # endif | |
4347 } | |
4348 #endif | |
4349 next = regnext(scan); | |
4350 | |
4351 op = OP(scan); | |
4352 /* Check for character class with NL added. */ | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4353 if (!rex.reg_line_lbr && WITH_NL(op) && REG_MULTI |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4354 && *rex.input == NUL && rex.lnum <= rex.reg_maxline) |
7 | 4355 { |
4356 reg_nextline(); | |
4357 } | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4358 else if (rex.reg_line_lbr && WITH_NL(op) && *rex.input == '\n') |
7 | 4359 { |
4360 ADVANCE_REGINPUT(); | |
4361 } | |
4362 else | |
4363 { | |
4364 if (WITH_NL(op)) | |
180 | 4365 op -= ADD_NL; |
7 | 4366 #ifdef FEAT_MBYTE |
4367 if (has_mbyte) | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4368 c = (*mb_ptr2char)(rex.input); |
7 | 4369 else |
4370 #endif | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4371 c = *rex.input; |
7 | 4372 switch (op) |
4373 { | |
4374 case BOL: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4375 if (rex.input != rex.line) |
180 | 4376 status = RA_NOMATCH; |
7 | 4377 break; |
4378 | |
4379 case EOL: | |
4380 if (c != NUL) | |
180 | 4381 status = RA_NOMATCH; |
7 | 4382 break; |
4383 | |
4384 case RE_BOF: | |
1458 | 4385 /* We're not at the beginning of the file when below the first |
4386 * line where we started, not at the start of the line or we | |
4387 * didn't start at the first line of the buffer. */ | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4388 if (rex.lnum != 0 || rex.input != rex.line |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4389 || (REG_MULTI && rex.reg_firstlnum > 1)) |
180 | 4390 status = RA_NOMATCH; |
7 | 4391 break; |
4392 | |
4393 case RE_EOF: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4394 if (rex.lnum != rex.reg_maxline || c != NUL) |
180 | 4395 status = RA_NOMATCH; |
7 | 4396 break; |
4397 | |
4398 case CURSOR: | |
4399 /* Check if the buffer is in a window and compare the | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4400 * rex.reg_win->w_cursor position to the match position. */ |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4401 if (rex.reg_win == NULL |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4402 || (rex.lnum + rex.reg_firstlnum |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4403 != rex.reg_win->w_cursor.lnum) |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4404 || ((colnr_T)(rex.input - rex.line) |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4405 != rex.reg_win->w_cursor.col)) |
180 | 4406 status = RA_NOMATCH; |
7 | 4407 break; |
4408 | |
639 | 4409 case RE_MARK: |
4732
0798b096bab3
updated for version 7.3.1113
Bram Moolenaar <bram@vim.org>
parents:
4730
diff
changeset
|
4410 /* Compare the mark position to the match position. */ |
639 | 4411 { |
4412 int mark = OPERAND(scan)[0]; | |
4413 int cmp = OPERAND(scan)[1]; | |
4414 pos_T *pos; | |
4415 | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4416 pos = getmark_buf(rex.reg_buf, mark, FALSE); |
1148 | 4417 if (pos == NULL /* mark doesn't exist */ |
4732
0798b096bab3
updated for version 7.3.1113
Bram Moolenaar <bram@vim.org>
parents:
4730
diff
changeset
|
4418 || pos->lnum <= 0 /* mark isn't set in reg_buf */ |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4419 || (pos->lnum == rex.lnum + rex.reg_firstlnum |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4420 ? (pos->col == (colnr_T)(rex.input - rex.line) |
639 | 4421 ? (cmp == '<' || cmp == '>') |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4422 : (pos->col < (colnr_T)(rex.input - rex.line) |
639 | 4423 ? cmp != '>' |
4424 : cmp != '<')) | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4425 : (pos->lnum < rex.lnum + rex.reg_firstlnum |
639 | 4426 ? cmp != '>' |
4427 : cmp != '<'))) | |
4428 status = RA_NOMATCH; | |
4429 } | |
4430 break; | |
4431 | |
4432 case RE_VISUAL: | |
4730
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4433 if (!reg_match_visual()) |
639 | 4434 status = RA_NOMATCH; |
4435 break; | |
4436 | |
7 | 4437 case RE_LNUM: |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4438 if (!REG_MULTI || !re_num_cmp((long_u)(rex.lnum + rex.reg_firstlnum), |
7 | 4439 scan)) |
180 | 4440 status = RA_NOMATCH; |
7 | 4441 break; |
4442 | |
4443 case RE_COL: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4444 if (!re_num_cmp((long_u)(rex.input - rex.line) + 1, scan)) |
180 | 4445 status = RA_NOMATCH; |
7 | 4446 break; |
4447 | |
4448 case RE_VCOL: | |
4449 if (!re_num_cmp((long_u)win_linetabsize( | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4450 rex.reg_win == NULL ? curwin : rex.reg_win, |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4451 rex.line, (colnr_T)(rex.input - rex.line)) + 1, scan)) |
180 | 4452 status = RA_NOMATCH; |
7 | 4453 break; |
4454 | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4455 case BOW: /* \<word; rex.input points to w */ |
7 | 4456 if (c == NUL) /* Can't match at end of line */ |
180 | 4457 status = RA_NOMATCH; |
7 | 4458 #ifdef FEAT_MBYTE |
180 | 4459 else if (has_mbyte) |
7 | 4460 { |
4461 int this_class; | |
4462 | |
4463 /* Get class of current and previous char (if it exists). */ | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4464 this_class = mb_get_class_buf(rex.input, rex.reg_buf); |
7 | 4465 if (this_class <= 1) |
180 | 4466 status = RA_NOMATCH; /* not on a word at all */ |
4467 else if (reg_prev_class() == this_class) | |
4468 status = RA_NOMATCH; /* previous char is in same word */ | |
7 | 4469 } |
4470 #endif | |
4471 else | |
4472 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4473 if (!vim_iswordc_buf(c, rex.reg_buf) || (rex.input > rex.line |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4474 && vim_iswordc_buf(rex.input[-1], rex.reg_buf))) |
180 | 4475 status = RA_NOMATCH; |
7 | 4476 } |
4477 break; | |
4478 | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4479 case EOW: /* word\>; rex.input points after d */ |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4480 if (rex.input == rex.line) /* Can't match at start of line */ |
180 | 4481 status = RA_NOMATCH; |
7 | 4482 #ifdef FEAT_MBYTE |
180 | 4483 else if (has_mbyte) |
7 | 4484 { |
4485 int this_class, prev_class; | |
4486 | |
4487 /* Get class of current and previous char (if it exists). */ | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4488 this_class = mb_get_class_buf(rex.input, rex.reg_buf); |
7 | 4489 prev_class = reg_prev_class(); |
180 | 4490 if (this_class == prev_class |
4491 || prev_class == 0 || prev_class == 1) | |
4492 status = RA_NOMATCH; | |
7 | 4493 } |
180 | 4494 #endif |
7 | 4495 else |
4496 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4497 if (!vim_iswordc_buf(rex.input[-1], rex.reg_buf) |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4498 || (rex.input[0] != NUL |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4499 && vim_iswordc_buf(c, rex.reg_buf))) |
180 | 4500 status = RA_NOMATCH; |
7 | 4501 } |
4502 break; /* Matched with EOW */ | |
4503 | |
4504 case ANY: | |
4084 | 4505 /* ANY does not match new lines. */ |
7 | 4506 if (c == NUL) |
180 | 4507 status = RA_NOMATCH; |
4508 else | |
4509 ADVANCE_REGINPUT(); | |
7 | 4510 break; |
4511 | |
4512 case IDENT: | |
4513 if (!vim_isIDc(c)) | |
180 | 4514 status = RA_NOMATCH; |
4515 else | |
4516 ADVANCE_REGINPUT(); | |
7 | 4517 break; |
4518 | |
4519 case SIDENT: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4520 if (VIM_ISDIGIT(*rex.input) || !vim_isIDc(c)) |
180 | 4521 status = RA_NOMATCH; |
4522 else | |
4523 ADVANCE_REGINPUT(); | |
7 | 4524 break; |
4525 | |
4526 case KWORD: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4527 if (!vim_iswordp_buf(rex.input, rex.reg_buf)) |
180 | 4528 status = RA_NOMATCH; |
4529 else | |
4530 ADVANCE_REGINPUT(); | |
7 | 4531 break; |
4532 | |
4533 case SKWORD: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4534 if (VIM_ISDIGIT(*rex.input) |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4535 || !vim_iswordp_buf(rex.input, rex.reg_buf)) |
180 | 4536 status = RA_NOMATCH; |
4537 else | |
4538 ADVANCE_REGINPUT(); | |
7 | 4539 break; |
4540 | |
4541 case FNAME: | |
4542 if (!vim_isfilec(c)) | |
180 | 4543 status = RA_NOMATCH; |
4544 else | |
4545 ADVANCE_REGINPUT(); | |
7 | 4546 break; |
4547 | |
4548 case SFNAME: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4549 if (VIM_ISDIGIT(*rex.input) || !vim_isfilec(c)) |
180 | 4550 status = RA_NOMATCH; |
4551 else | |
4552 ADVANCE_REGINPUT(); | |
7 | 4553 break; |
4554 | |
4555 case PRINT: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4556 if (!vim_isprintc(PTR2CHAR(rex.input))) |
180 | 4557 status = RA_NOMATCH; |
4558 else | |
4559 ADVANCE_REGINPUT(); | |
7 | 4560 break; |
4561 | |
4562 case SPRINT: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4563 if (VIM_ISDIGIT(*rex.input) || !vim_isprintc(PTR2CHAR(rex.input))) |
180 | 4564 status = RA_NOMATCH; |
4565 else | |
4566 ADVANCE_REGINPUT(); | |
7 | 4567 break; |
4568 | |
4569 case WHITE: | |
11129
f4ea50924c6d
patch 8.0.0452: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11127
diff
changeset
|
4570 if (!VIM_ISWHITE(c)) |
180 | 4571 status = RA_NOMATCH; |
4572 else | |
4573 ADVANCE_REGINPUT(); | |
7 | 4574 break; |
4575 | |
4576 case NWHITE: | |
11129
f4ea50924c6d
patch 8.0.0452: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11127
diff
changeset
|
4577 if (c == NUL || VIM_ISWHITE(c)) |
180 | 4578 status = RA_NOMATCH; |
4579 else | |
4580 ADVANCE_REGINPUT(); | |
7 | 4581 break; |
4582 | |
4583 case DIGIT: | |
4584 if (!ri_digit(c)) | |
180 | 4585 status = RA_NOMATCH; |
4586 else | |
4587 ADVANCE_REGINPUT(); | |
7 | 4588 break; |
4589 | |
4590 case NDIGIT: | |
4591 if (c == NUL || ri_digit(c)) | |
180 | 4592 status = RA_NOMATCH; |
4593 else | |
4594 ADVANCE_REGINPUT(); | |
7 | 4595 break; |
4596 | |
4597 case HEX: | |
4598 if (!ri_hex(c)) | |
180 | 4599 status = RA_NOMATCH; |
4600 else | |
4601 ADVANCE_REGINPUT(); | |
7 | 4602 break; |
4603 | |
4604 case NHEX: | |
4605 if (c == NUL || ri_hex(c)) | |
180 | 4606 status = RA_NOMATCH; |
4607 else | |
4608 ADVANCE_REGINPUT(); | |
7 | 4609 break; |
4610 | |
4611 case OCTAL: | |
4612 if (!ri_octal(c)) | |
180 | 4613 status = RA_NOMATCH; |
4614 else | |
4615 ADVANCE_REGINPUT(); | |
7 | 4616 break; |
4617 | |
4618 case NOCTAL: | |
4619 if (c == NUL || ri_octal(c)) | |
180 | 4620 status = RA_NOMATCH; |
4621 else | |
4622 ADVANCE_REGINPUT(); | |
7 | 4623 break; |
4624 | |
4625 case WORD: | |
4626 if (!ri_word(c)) | |
180 | 4627 status = RA_NOMATCH; |
4628 else | |
4629 ADVANCE_REGINPUT(); | |
7 | 4630 break; |
4631 | |
4632 case NWORD: | |
4633 if (c == NUL || ri_word(c)) | |
180 | 4634 status = RA_NOMATCH; |
4635 else | |
4636 ADVANCE_REGINPUT(); | |
7 | 4637 break; |
4638 | |
4639 case HEAD: | |
4640 if (!ri_head(c)) | |
180 | 4641 status = RA_NOMATCH; |
4642 else | |
4643 ADVANCE_REGINPUT(); | |
7 | 4644 break; |
4645 | |
4646 case NHEAD: | |
4647 if (c == NUL || ri_head(c)) | |
180 | 4648 status = RA_NOMATCH; |
4649 else | |
4650 ADVANCE_REGINPUT(); | |
7 | 4651 break; |
4652 | |
4653 case ALPHA: | |
4654 if (!ri_alpha(c)) | |
180 | 4655 status = RA_NOMATCH; |
4656 else | |
4657 ADVANCE_REGINPUT(); | |
7 | 4658 break; |
4659 | |
4660 case NALPHA: | |
4661 if (c == NUL || ri_alpha(c)) | |
180 | 4662 status = RA_NOMATCH; |
4663 else | |
4664 ADVANCE_REGINPUT(); | |
7 | 4665 break; |
4666 | |
4667 case LOWER: | |
4668 if (!ri_lower(c)) | |
180 | 4669 status = RA_NOMATCH; |
4670 else | |
4671 ADVANCE_REGINPUT(); | |
7 | 4672 break; |
4673 | |
4674 case NLOWER: | |
4675 if (c == NUL || ri_lower(c)) | |
180 | 4676 status = RA_NOMATCH; |
4677 else | |
4678 ADVANCE_REGINPUT(); | |
7 | 4679 break; |
4680 | |
4681 case UPPER: | |
4682 if (!ri_upper(c)) | |
180 | 4683 status = RA_NOMATCH; |
4684 else | |
4685 ADVANCE_REGINPUT(); | |
7 | 4686 break; |
4687 | |
4688 case NUPPER: | |
4689 if (c == NUL || ri_upper(c)) | |
180 | 4690 status = RA_NOMATCH; |
4691 else | |
4692 ADVANCE_REGINPUT(); | |
7 | 4693 break; |
4694 | |
4695 case EXACTLY: | |
4696 { | |
4697 int len; | |
4698 char_u *opnd; | |
4699 | |
4700 opnd = OPERAND(scan); | |
4701 /* Inline the first byte, for speed. */ | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4702 if (*opnd != *rex.input |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4703 && (!rex.reg_ic || ( |
7 | 4704 #ifdef FEAT_MBYTE |
4705 !enc_utf8 && | |
4706 #endif | |
14354
ffd834f893aa
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4707 MB_TOLOWER(*opnd) != MB_TOLOWER(*rex.input)))) |
180 | 4708 status = RA_NOMATCH; |
4709 else if (*opnd == NUL) | |
7 | 4710 { |
4711 /* match empty string always works; happens when "~" is | |
4712 * empty. */ | |
4713 } | |
5899 | 4714 else |
4715 { | |
4716 if (opnd[1] == NUL | |
7 | 4717 #ifdef FEAT_MBYTE |
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4718 && !(enc_utf8 && rex.reg_ic) |
7 | 4719 #endif |
4720 ) | |
5899 | 4721 { |
4722 len = 1; /* matched a single byte above */ | |
4723 } | |
4724 else | |
4725 { | |
4726 /* Need to match first byte again for multi-byte. */ | |
4727 len = (int)STRLEN(opnd); | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4728 if (cstrncmp(opnd, rex.input, &len) != 0) |
5899 | 4729 status = RA_NOMATCH; |
4730 } | |
7 | 4731 #ifdef FEAT_MBYTE |
5901 | 4732 /* Check for following composing character, unless %C |
4733 * follows (skips over all composing chars). */ | |
5899 | 4734 if (status != RA_NOMATCH |
4735 && enc_utf8 | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4736 && UTF_COMPOSINGLIKE(rex.input, rex.input + len) |
10245
d76ccdacb41e
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4737 && !rex.reg_icombine |
5901 | 4738 && OP(next) != RE_COMPOSING) |
7 | 4739 { |
4740 /* raaron: This code makes a composing character get | |
4741 * ignored, which is the correct behavior (sometimes) | |
4742 * for voweled Hebrew texts. */ | |
5899 | 4743 status = RA_NOMATCH; |
7 | 4744 } |
180 | 4745 #endif |
5899 | 4746 if (status != RA_NOMATCH) |
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4747 rex.input += len; |
7 | 4748 } |
4749 } | |
4750 break; | |
4751 | |
4752 case ANYOF: | |
4753 case ANYBUT: | |
4754 if (c == NUL) | |
180 | 4755 status = RA_NOMATCH; |
4756 else if ((cstrchr(OPERAND(scan), c) == NULL) == (op == ANYOF)) | |
4757 status = RA_NOMATCH; | |
4758 else | |
4759 ADVANCE_REGINPUT(); | |
7 | 4760 break; |
4761 | |
4762 #ifdef FEAT_MBYTE | |
4763 case MULTIBYTECODE: | |
4764 if (has_mbyte) | |
4765 { | |
4766 int i, len; | |
4767 char_u *opnd; | |
944 | 4768 int opndc = 0, inpc; |
7 | 4769 |
4770 opnd = OPERAND(scan); | |
4771 /* Safety check (just in case 'encoding' was changed since | |
4772 * compiling the program). */ | |
474 | 4773 if ((len = (*mb_ptr2len)(opnd)) < 2) |
180 | 4774 { |
4775 status = RA_NOMATCH; | |
4776 break; | |
4777 } | |
714 | 4778 if (enc_utf8) |
11269
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patch 8.0.0520: using a function pointer while the function is known
Christian Brabandt <cb@256bit.org>
parents:
11267
diff
changeset
|
4779 opndc = utf_ptr2char(opnd); |
714 | 4780 if (enc_utf8 && utf_iscomposing(opndc)) |
4781 { | |
4782 /* When only a composing char is given match at any | |
4783 * position where that composing char appears. */ | |
4784 status = RA_NOMATCH; | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
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14169
diff
changeset
|
4785 for (i = 0; rex.input[i] != NUL; |
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patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
14169
diff
changeset
|
4786 i += utf_ptr2len(rex.input + i)) |
180 | 4787 { |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4788 inpc = utf_ptr2char(rex.input + i); |
714 | 4789 if (!utf_iscomposing(inpc)) |
4790 { | |
4791 if (i > 0) | |
4792 break; | |
4793 } | |
4794 else if (opndc == inpc) | |
4795 { | |
4796 /* Include all following composing chars. */ | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4797 len = i + utfc_ptr2len(rex.input + i); |
714 | 4798 status = RA_MATCH; |
4799 break; | |
4800 } | |
180 | 4801 } |
714 | 4802 } |
4803 else | |
4804 for (i = 0; i < len; ++i) | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4805 if (opnd[i] != rex.input[i]) |
714 | 4806 { |
4807 status = RA_NOMATCH; | |
4808 break; | |
4809 } | |
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4810 rex.input += len; |
7 | 4811 } |
4812 else | |
180 | 4813 status = RA_NOMATCH; |
7 | 4814 break; |
4815 #endif | |
5901 | 4816 case RE_COMPOSING: |
4817 #ifdef FEAT_MBYTE | |
4818 if (enc_utf8) | |
4819 { | |
4820 /* Skip composing characters. */ | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4821 while (utf_iscomposing(utf_ptr2char(rex.input))) |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
4822 MB_CPTR_ADV(rex.input); |
5901 | 4823 } |
4824 #endif | |
4825 break; | |
7 | 4826 |
4827 case NOTHING: | |
4828 break; | |
4829 | |
4830 case BACK: | |
233 | 4831 { |
4832 int i; | |
4833 backpos_T *bp; | |
4834 | |
4835 /* | |
4836 * When we run into BACK we need to check if we don't keep | |
4837 * looping without matching any input. The second and later | |
4838 * times a BACK is encountered it fails if the input is still | |
4839 * at the same position as the previous time. | |
4840 * The positions are stored in "backpos" and found by the | |
4841 * current value of "scan", the position in the RE program. | |
4842 */ | |
4843 bp = (backpos_T *)backpos.ga_data; | |
4844 for (i = 0; i < backpos.ga_len; ++i) | |
4845 if (bp[i].bp_scan == scan) | |
4846 break; | |
4847 if (i == backpos.ga_len) | |
4848 { | |
4849 /* First time at this BACK, make room to store the pos. */ | |
4850 if (ga_grow(&backpos, 1) == FAIL) | |
4851 status = RA_FAIL; | |
4852 else | |
4853 { | |
4854 /* get "ga_data" again, it may have changed */ | |
4855 bp = (backpos_T *)backpos.ga_data; | |
4856 bp[i].bp_scan = scan; | |
4857 ++backpos.ga_len; | |
4858 } | |
4859 } | |
4860 else if (reg_save_equal(&bp[i].bp_pos)) | |
4861 /* Still at same position as last time, fail. */ | |
4862 status = RA_NOMATCH; | |
4863 | |
4864 if (status != RA_FAIL && status != RA_NOMATCH) | |
4865 reg_save(&bp[i].bp_pos, &backpos); | |
4866 } | |
179 | 4867 break; |
4868 | |
7 | 4869 case MOPEN + 0: /* Match start: \zs */ |
4870 case MOPEN + 1: /* \( */ | |
4871 case MOPEN + 2: | |
4872 case MOPEN + 3: | |
4873 case MOPEN + 4: | |
4874 case MOPEN + 5: | |
4875 case MOPEN + 6: | |
4876 case MOPEN + 7: | |
4877 case MOPEN + 8: | |
4878 case MOPEN + 9: | |
4879 { | |
4880 no = op - MOPEN; | |
4881 cleanup_subexpr(); | |
270 | 4882 rp = regstack_push(RS_MOPEN, scan); |
180 | 4883 if (rp == NULL) |
4884 status = RA_FAIL; | |
4885 else | |
4886 { | |
4887 rp->rs_no = no; | |
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4888 save_se(&rp->rs_un.sesave, &rex.reg_startpos[no], |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4889 &rex.reg_startp[no]); |
180 | 4890 /* We simply continue and handle the result when done. */ |
4891 } | |
7 | 4892 } |
180 | 4893 break; |
7 | 4894 |
4895 case NOPEN: /* \%( */ | |
4896 case NCLOSE: /* \) after \%( */ | |
270 | 4897 if (regstack_push(RS_NOPEN, scan) == NULL) |
180 | 4898 status = RA_FAIL; |
4899 /* We simply continue and handle the result when done. */ | |
4900 break; | |
7 | 4901 |
4902 #ifdef FEAT_SYN_HL | |
4903 case ZOPEN + 1: | |
4904 case ZOPEN + 2: | |
4905 case ZOPEN + 3: | |
4906 case ZOPEN + 4: | |
4907 case ZOPEN + 5: | |
4908 case ZOPEN + 6: | |
4909 case ZOPEN + 7: | |
4910 case ZOPEN + 8: | |
4911 case ZOPEN + 9: | |
4912 { | |
4913 no = op - ZOPEN; | |
4914 cleanup_zsubexpr(); | |
270 | 4915 rp = regstack_push(RS_ZOPEN, scan); |
180 | 4916 if (rp == NULL) |
4917 status = RA_FAIL; | |
4918 else | |
4919 { | |
4920 rp->rs_no = no; | |
4921 save_se(&rp->rs_un.sesave, ®_startzpos[no], | |
4922 ®_startzp[no]); | |
4923 /* We simply continue and handle the result when done. */ | |
4924 } | |
7 | 4925 } |
180 | 4926 break; |
7 | 4927 #endif |
4928 | |
4929 case MCLOSE + 0: /* Match end: \ze */ | |
4930 case MCLOSE + 1: /* \) */ | |
4931 case MCLOSE + 2: | |
4932 case MCLOSE + 3: | |
4933 case MCLOSE + 4: | |
4934 case MCLOSE + 5: | |
4935 case MCLOSE + 6: | |
4936 case MCLOSE + 7: | |
4937 case MCLOSE + 8: | |
4938 case MCLOSE + 9: | |
4939 { | |
4940 no = op - MCLOSE; | |
4941 cleanup_subexpr(); | |
270 | 4942 rp = regstack_push(RS_MCLOSE, scan); |
180 | 4943 if (rp == NULL) |
4944 status = RA_FAIL; | |
4945 else | |
4946 { | |
4947 rp->rs_no = no; | |
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4948 save_se(&rp->rs_un.sesave, &rex.reg_endpos[no], |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4949 &rex.reg_endp[no]); |
180 | 4950 /* We simply continue and handle the result when done. */ |
4951 } | |
7 | 4952 } |
180 | 4953 break; |
7 | 4954 |
4955 #ifdef FEAT_SYN_HL | |
4956 case ZCLOSE + 1: /* \) after \z( */ | |
4957 case ZCLOSE + 2: | |
4958 case ZCLOSE + 3: | |
4959 case ZCLOSE + 4: | |
4960 case ZCLOSE + 5: | |
4961 case ZCLOSE + 6: | |
4962 case ZCLOSE + 7: | |
4963 case ZCLOSE + 8: | |
4964 case ZCLOSE + 9: | |
4965 { | |
4966 no = op - ZCLOSE; | |
4967 cleanup_zsubexpr(); | |
270 | 4968 rp = regstack_push(RS_ZCLOSE, scan); |
180 | 4969 if (rp == NULL) |
4970 status = RA_FAIL; | |
4971 else | |
4972 { | |
4973 rp->rs_no = no; | |
4974 save_se(&rp->rs_un.sesave, ®_endzpos[no], | |
4975 ®_endzp[no]); | |
4976 /* We simply continue and handle the result when done. */ | |
4977 } | |
7 | 4978 } |
180 | 4979 break; |
7 | 4980 #endif |
4981 | |
4982 case BACKREF + 1: | |
4983 case BACKREF + 2: | |
4984 case BACKREF + 3: | |
4985 case BACKREF + 4: | |
4986 case BACKREF + 5: | |
4987 case BACKREF + 6: | |
4988 case BACKREF + 7: | |
4989 case BACKREF + 8: | |
4990 case BACKREF + 9: | |
4991 { | |
4992 int len; | |
4993 | |
4994 no = op - BACKREF; | |
4995 cleanup_subexpr(); | |
4996 if (!REG_MULTI) /* Single-line regexp */ | |
4997 { | |
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d76ccdacb41e
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
4998 if (rex.reg_startp[no] == NULL || rex.reg_endp[no] == NULL) |
7 | 4999 { |
5000 /* Backref was not set: Match an empty string. */ | |
5001 len = 0; | |
5002 } | |
5003 else | |
5004 { | |
5005 /* Compare current input with back-ref in the same | |
5006 * line. */ | |
10245
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5007 len = (int)(rex.reg_endp[no] - rex.reg_startp[no]); |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5008 if (cstrncmp(rex.reg_startp[no], rex.input, &len) != 0) |
180 | 5009 status = RA_NOMATCH; |
7 | 5010 } |
5011 } | |
5012 else /* Multi-line regexp */ | |
5013 { | |
10245
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5014 if (rex.reg_startpos[no].lnum < 0 |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5015 || rex.reg_endpos[no].lnum < 0) |
7 | 5016 { |
5017 /* Backref was not set: Match an empty string. */ | |
5018 len = 0; | |
5019 } | |
5020 else | |
5021 { | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5022 if (rex.reg_startpos[no].lnum == rex.lnum |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5023 && rex.reg_endpos[no].lnum == rex.lnum) |
7 | 5024 { |
5025 /* Compare back-ref within the current line. */ | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5026 len = rex.reg_endpos[no].col |
d76ccdacb41e
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5027 - rex.reg_startpos[no].col; |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
5028 if (cstrncmp(rex.line + rex.reg_startpos[no].col, |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
5029 rex.input, &len) != 0) |
180 | 5030 status = RA_NOMATCH; |
7 | 5031 } |
5032 else | |
5033 { | |
5034 /* Messy situation: Need to compare between two | |
5035 * lines. */ | |
4901
56fbf60e9476
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4899
diff
changeset
|
5036 int r = match_with_backref( |
10245
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
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parents:
10187
diff
changeset
|
5037 rex.reg_startpos[no].lnum, |
d76ccdacb41e
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parents:
10187
diff
changeset
|
5038 rex.reg_startpos[no].col, |
d76ccdacb41e
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5039 rex.reg_endpos[no].lnum, |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5040 rex.reg_endpos[no].col, |
4899
4837fd61be52
updated for version 7.3.1195
Bram Moolenaar <bram@vim.org>
parents:
4891
diff
changeset
|
5041 &len); |
4901
56fbf60e9476
updated for version 7.3.1196
Bram Moolenaar <bram@vim.org>
parents:
4899
diff
changeset
|
5042 |
56fbf60e9476
updated for version 7.3.1196
Bram Moolenaar <bram@vim.org>
parents:
4899
diff
changeset
|
5043 if (r != RA_MATCH) |
56fbf60e9476
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Bram Moolenaar <bram@vim.org>
parents:
4899
diff
changeset
|
5044 status = r; |
7 | 5045 } |
5046 } | |
5047 } | |
5048 | |
5049 /* Matched the backref, skip over it. */ | |
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5050 rex.input += len; |
7 | 5051 } |
5052 break; | |
5053 | |
5054 #ifdef FEAT_SYN_HL | |
5055 case ZREF + 1: | |
5056 case ZREF + 2: | |
5057 case ZREF + 3: | |
5058 case ZREF + 4: | |
5059 case ZREF + 5: | |
5060 case ZREF + 6: | |
5061 case ZREF + 7: | |
5062 case ZREF + 8: | |
5063 case ZREF + 9: | |
5064 { | |
5065 int len; | |
5066 | |
5067 cleanup_zsubexpr(); | |
5068 no = op - ZREF; | |
5069 if (re_extmatch_in != NULL | |
5070 && re_extmatch_in->matches[no] != NULL) | |
5071 { | |
5072 len = (int)STRLEN(re_extmatch_in->matches[no]); | |
5073 if (cstrncmp(re_extmatch_in->matches[no], | |
14354
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5074 rex.input, &len) != 0) |
180 | 5075 status = RA_NOMATCH; |
5076 else | |
14354
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5077 rex.input += len; |
7 | 5078 } |
5079 else | |
5080 { | |
5081 /* Backref was not set: Match an empty string. */ | |
5082 } | |
5083 } | |
5084 break; | |
5085 #endif | |
5086 | |
5087 case BRANCH: | |
5088 { | |
5089 if (OP(next) != BRANCH) /* No choice. */ | |
5090 next = OPERAND(scan); /* Avoid recursion. */ | |
5091 else | |
5092 { | |
270 | 5093 rp = regstack_push(RS_BRANCH, scan); |
180 | 5094 if (rp == NULL) |
5095 status = RA_FAIL; | |
5096 else | |
5097 status = RA_BREAK; /* rest is below */ | |
7 | 5098 } |
5099 } | |
5100 break; | |
5101 | |
5102 case BRACE_LIMITS: | |
5103 { | |
5104 if (OP(next) == BRACE_SIMPLE) | |
5105 { | |
5106 bl_minval = OPERAND_MIN(scan); | |
5107 bl_maxval = OPERAND_MAX(scan); | |
5108 } | |
5109 else if (OP(next) >= BRACE_COMPLEX | |
5110 && OP(next) < BRACE_COMPLEX + 10) | |
5111 { | |
5112 no = OP(next) - BRACE_COMPLEX; | |
5113 brace_min[no] = OPERAND_MIN(scan); | |
5114 brace_max[no] = OPERAND_MAX(scan); | |
5115 brace_count[no] = 0; | |
5116 } | |
5117 else | |
5118 { | |
10359
66f1b5bf3fa6
commit https://github.com/vim/vim/commit/95f096030ed1a8afea028f2ea295d6f6a70f466f
Christian Brabandt <cb@256bit.org>
parents:
10245
diff
changeset
|
5119 internal_error("BRACE_LIMITS"); |
180 | 5120 status = RA_FAIL; |
7 | 5121 } |
5122 } | |
5123 break; | |
5124 | |
5125 case BRACE_COMPLEX + 0: | |
5126 case BRACE_COMPLEX + 1: | |
5127 case BRACE_COMPLEX + 2: | |
5128 case BRACE_COMPLEX + 3: | |
5129 case BRACE_COMPLEX + 4: | |
5130 case BRACE_COMPLEX + 5: | |
5131 case BRACE_COMPLEX + 6: | |
5132 case BRACE_COMPLEX + 7: | |
5133 case BRACE_COMPLEX + 8: | |
5134 case BRACE_COMPLEX + 9: | |
5135 { | |
5136 no = op - BRACE_COMPLEX; | |
5137 ++brace_count[no]; | |
5138 | |
5139 /* If not matched enough times yet, try one more */ | |
5140 if (brace_count[no] <= (brace_min[no] <= brace_max[no] | |
180 | 5141 ? brace_min[no] : brace_max[no])) |
7 | 5142 { |
270 | 5143 rp = regstack_push(RS_BRCPLX_MORE, scan); |
180 | 5144 if (rp == NULL) |
5145 status = RA_FAIL; | |
5146 else | |
5147 { | |
5148 rp->rs_no = no; | |
233 | 5149 reg_save(&rp->rs_un.regsave, &backpos); |
180 | 5150 next = OPERAND(scan); |
5151 /* We continue and handle the result when done. */ | |
5152 } | |
5153 break; | |
7 | 5154 } |
5155 | |
5156 /* If matched enough times, may try matching some more */ | |
5157 if (brace_min[no] <= brace_max[no]) | |
5158 { | |
5159 /* Range is the normal way around, use longest match */ | |
5160 if (brace_count[no] <= brace_max[no]) | |
5161 { | |
270 | 5162 rp = regstack_push(RS_BRCPLX_LONG, scan); |
180 | 5163 if (rp == NULL) |
5164 status = RA_FAIL; | |
5165 else | |
5166 { | |
5167 rp->rs_no = no; | |
233 | 5168 reg_save(&rp->rs_un.regsave, &backpos); |
180 | 5169 next = OPERAND(scan); |
5170 /* We continue and handle the result when done. */ | |
5171 } | |
7 | 5172 } |
5173 } | |
5174 else | |
5175 { | |
5176 /* Range is backwards, use shortest match first */ | |
5177 if (brace_count[no] <= brace_min[no]) | |
5178 { | |
270 | 5179 rp = regstack_push(RS_BRCPLX_SHORT, scan); |
180 | 5180 if (rp == NULL) |
5181 status = RA_FAIL; | |
5182 else | |
5183 { | |
233 | 5184 reg_save(&rp->rs_un.regsave, &backpos); |
180 | 5185 /* We continue and handle the result when done. */ |
5186 } | |
7 | 5187 } |
5188 } | |
5189 } | |
5190 break; | |
5191 | |
5192 case BRACE_SIMPLE: | |
5193 case STAR: | |
5194 case PLUS: | |
5195 { | |
180 | 5196 regstar_T rst; |
7 | 5197 |
5198 /* | |
5199 * Lookahead to avoid useless match attempts when we know | |
5200 * what character comes next. | |
5201 */ | |
5202 if (OP(next) == EXACTLY) | |
5203 { | |
180 | 5204 rst.nextb = *OPERAND(next); |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5205 if (rex.reg_ic) |
7 | 5206 { |
1347 | 5207 if (MB_ISUPPER(rst.nextb)) |
5208 rst.nextb_ic = MB_TOLOWER(rst.nextb); | |
7 | 5209 else |
1347 | 5210 rst.nextb_ic = MB_TOUPPER(rst.nextb); |
7 | 5211 } |
5212 else | |
180 | 5213 rst.nextb_ic = rst.nextb; |
7 | 5214 } |
5215 else | |
5216 { | |
180 | 5217 rst.nextb = NUL; |
5218 rst.nextb_ic = NUL; | |
7 | 5219 } |
5220 if (op != BRACE_SIMPLE) | |
5221 { | |
180 | 5222 rst.minval = (op == STAR) ? 0 : 1; |
5223 rst.maxval = MAX_LIMIT; | |
7 | 5224 } |
5225 else | |
5226 { | |
180 | 5227 rst.minval = bl_minval; |
5228 rst.maxval = bl_maxval; | |
7 | 5229 } |
5230 | |
5231 /* | |
5232 * When maxval > minval, try matching as much as possible, up | |
5233 * to maxval. When maxval < minval, try matching at least the | |
5234 * minimal number (since the range is backwards, that's also | |
5235 * maxval!). | |
5236 */ | |
180 | 5237 rst.count = regrepeat(OPERAND(scan), rst.maxval); |
7 | 5238 if (got_int) |
180 | 5239 { |
5240 status = RA_FAIL; | |
5241 break; | |
5242 } | |
5243 if (rst.minval <= rst.maxval | |
5244 ? rst.count >= rst.minval : rst.count >= rst.maxval) | |
7 | 5245 { |
180 | 5246 /* It could match. Prepare for trying to match what |
5247 * follows. The code is below. Parameters are stored in | |
5248 * a regstar_T on the regstack. */ | |
212 | 5249 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
189 | 5250 { |
5251 EMSG(_(e_maxmempat)); | |
5252 status = RA_FAIL; | |
5253 } | |
5254 else if (ga_grow(®stack, sizeof(regstar_T)) == FAIL) | |
180 | 5255 status = RA_FAIL; |
5256 else | |
7 | 5257 { |
180 | 5258 regstack.ga_len += sizeof(regstar_T); |
270 | 5259 rp = regstack_push(rst.minval <= rst.maxval |
233 | 5260 ? RS_STAR_LONG : RS_STAR_SHORT, scan); |
180 | 5261 if (rp == NULL) |
5262 status = RA_FAIL; | |
5263 else | |
7 | 5264 { |
180 | 5265 *(((regstar_T *)rp) - 1) = rst; |
5266 status = RA_BREAK; /* skip the restore bits */ | |
7 | 5267 } |
5268 } | |
5269 } | |
5270 else | |
180 | 5271 status = RA_NOMATCH; |
5272 | |
7 | 5273 } |
180 | 5274 break; |
7 | 5275 |
5276 case NOMATCH: | |
5277 case MATCH: | |
5278 case SUBPAT: | |
270 | 5279 rp = regstack_push(RS_NOMATCH, scan); |
180 | 5280 if (rp == NULL) |
5281 status = RA_FAIL; | |
5282 else | |
7 | 5283 { |
180 | 5284 rp->rs_no = op; |
233 | 5285 reg_save(&rp->rs_un.regsave, &backpos); |
180 | 5286 next = OPERAND(scan); |
5287 /* We continue and handle the result when done. */ | |
7 | 5288 } |
5289 break; | |
5290 | |
5291 case BEHIND: | |
5292 case NOBEHIND: | |
180 | 5293 /* Need a bit of room to store extra positions. */ |
212 | 5294 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
189 | 5295 { |
5296 EMSG(_(e_maxmempat)); | |
5297 status = RA_FAIL; | |
5298 } | |
5299 else if (ga_grow(®stack, sizeof(regbehind_T)) == FAIL) | |
180 | 5300 status = RA_FAIL; |
5301 else | |
7 | 5302 { |
180 | 5303 regstack.ga_len += sizeof(regbehind_T); |
270 | 5304 rp = regstack_push(RS_BEHIND1, scan); |
180 | 5305 if (rp == NULL) |
5306 status = RA_FAIL; | |
5307 else | |
7 | 5308 { |
1579 | 5309 /* Need to save the subexpr to be able to restore them |
5310 * when there is a match but we don't use it. */ | |
5311 save_subexpr(((regbehind_T *)rp) - 1); | |
5312 | |
180 | 5313 rp->rs_no = op; |
233 | 5314 reg_save(&rp->rs_un.regsave, &backpos); |
180 | 5315 /* First try if what follows matches. If it does then we |
5316 * check the behind match by looping. */ | |
7 | 5317 } |
5318 } | |
180 | 5319 break; |
7 | 5320 |
5321 case BHPOS: | |
5322 if (REG_MULTI) | |
5323 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5324 if (behind_pos.rs_u.pos.col != (colnr_T)(rex.input - rex.line) |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5325 || behind_pos.rs_u.pos.lnum != rex.lnum) |
180 | 5326 status = RA_NOMATCH; |
7 | 5327 } |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5328 else if (behind_pos.rs_u.ptr != rex.input) |
180 | 5329 status = RA_NOMATCH; |
7 | 5330 break; |
5331 | |
5332 case NEWL: | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5333 if ((c != NUL || !REG_MULTI || rex.lnum > rex.reg_maxline |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5334 || rex.reg_line_lbr) |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5335 && (c != '\n' || !rex.reg_line_lbr)) |
180 | 5336 status = RA_NOMATCH; |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5337 else if (rex.reg_line_lbr) |
7 | 5338 ADVANCE_REGINPUT(); |
5339 else | |
5340 reg_nextline(); | |
5341 break; | |
5342 | |
5343 case END: | |
180 | 5344 status = RA_MATCH; /* Success! */ |
5345 break; | |
7 | 5346 |
5347 default: | |
5348 EMSG(_(e_re_corr)); | |
5349 #ifdef DEBUG | |
5350 printf("Illegal op code %d\n", op); | |
5351 #endif | |
180 | 5352 status = RA_FAIL; |
5353 break; | |
7 | 5354 } |
5355 } | |
5356 | |
180 | 5357 /* If we can't continue sequentially, break the inner loop. */ |
5358 if (status != RA_CONT) | |
5359 break; | |
5360 | |
5361 /* Continue in inner loop, advance to next item. */ | |
7 | 5362 scan = next; |
180 | 5363 |
5364 } /* end of inner loop */ | |
7 | 5365 |
5366 /* | |
180 | 5367 * If there is something on the regstack execute the code for the state. |
233 | 5368 * If the state is popped then loop and use the older state. |
7 | 5369 */ |
180 | 5370 while (regstack.ga_len > 0 && status != RA_FAIL) |
5371 { | |
5372 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1; | |
5373 switch (rp->rs_state) | |
5374 { | |
5375 case RS_NOPEN: | |
5376 /* Result is passed on as-is, simply pop the state. */ | |
270 | 5377 regstack_pop(&scan); |
180 | 5378 break; |
5379 | |
5380 case RS_MOPEN: | |
5381 /* Pop the state. Restore pointers when there is no match. */ | |
5382 if (status == RA_NOMATCH) | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5383 restore_se(&rp->rs_un.sesave, &rex.reg_startpos[rp->rs_no], |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5384 &rex.reg_startp[rp->rs_no]); |
270 | 5385 regstack_pop(&scan); |
180 | 5386 break; |
5387 | |
5388 #ifdef FEAT_SYN_HL | |
5389 case RS_ZOPEN: | |
5390 /* Pop the state. Restore pointers when there is no match. */ | |
5391 if (status == RA_NOMATCH) | |
5392 restore_se(&rp->rs_un.sesave, ®_startzpos[rp->rs_no], | |
5393 ®_startzp[rp->rs_no]); | |
270 | 5394 regstack_pop(&scan); |
180 | 5395 break; |
5396 #endif | |
5397 | |
5398 case RS_MCLOSE: | |
5399 /* Pop the state. Restore pointers when there is no match. */ | |
5400 if (status == RA_NOMATCH) | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5401 restore_se(&rp->rs_un.sesave, &rex.reg_endpos[rp->rs_no], |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5402 &rex.reg_endp[rp->rs_no]); |
270 | 5403 regstack_pop(&scan); |
180 | 5404 break; |
5405 | |
5406 #ifdef FEAT_SYN_HL | |
5407 case RS_ZCLOSE: | |
5408 /* Pop the state. Restore pointers when there is no match. */ | |
5409 if (status == RA_NOMATCH) | |
5410 restore_se(&rp->rs_un.sesave, ®_endzpos[rp->rs_no], | |
5411 ®_endzp[rp->rs_no]); | |
270 | 5412 regstack_pop(&scan); |
180 | 5413 break; |
5414 #endif | |
5415 | |
5416 case RS_BRANCH: | |
5417 if (status == RA_MATCH) | |
5418 /* this branch matched, use it */ | |
270 | 5419 regstack_pop(&scan); |
180 | 5420 else |
5421 { | |
5422 if (status != RA_BREAK) | |
5423 { | |
5424 /* After a non-matching branch: try next one. */ | |
233 | 5425 reg_restore(&rp->rs_un.regsave, &backpos); |
180 | 5426 scan = rp->rs_scan; |
5427 } | |
5428 if (scan == NULL || OP(scan) != BRANCH) | |
5429 { | |
5430 /* no more branches, didn't find a match */ | |
5431 status = RA_NOMATCH; | |
270 | 5432 regstack_pop(&scan); |
180 | 5433 } |
5434 else | |
5435 { | |
5436 /* Prepare to try a branch. */ | |
5437 rp->rs_scan = regnext(scan); | |
233 | 5438 reg_save(&rp->rs_un.regsave, &backpos); |
180 | 5439 scan = OPERAND(scan); |
5440 } | |
5441 } | |
5442 break; | |
5443 | |
5444 case RS_BRCPLX_MORE: | |
5445 /* Pop the state. Restore pointers when there is no match. */ | |
5446 if (status == RA_NOMATCH) | |
5447 { | |
233 | 5448 reg_restore(&rp->rs_un.regsave, &backpos); |
180 | 5449 --brace_count[rp->rs_no]; /* decrement match count */ |
5450 } | |
270 | 5451 regstack_pop(&scan); |
180 | 5452 break; |
5453 | |
5454 case RS_BRCPLX_LONG: | |
5455 /* Pop the state. Restore pointers when there is no match. */ | |
5456 if (status == RA_NOMATCH) | |
5457 { | |
5458 /* There was no match, but we did find enough matches. */ | |
233 | 5459 reg_restore(&rp->rs_un.regsave, &backpos); |
180 | 5460 --brace_count[rp->rs_no]; |
5461 /* continue with the items after "\{}" */ | |
5462 status = RA_CONT; | |
5463 } | |
270 | 5464 regstack_pop(&scan); |
180 | 5465 if (status == RA_CONT) |
5466 scan = regnext(scan); | |
5467 break; | |
5468 | |
5469 case RS_BRCPLX_SHORT: | |
5470 /* Pop the state. Restore pointers when there is no match. */ | |
5471 if (status == RA_NOMATCH) | |
5472 /* There was no match, try to match one more item. */ | |
233 | 5473 reg_restore(&rp->rs_un.regsave, &backpos); |
270 | 5474 regstack_pop(&scan); |
180 | 5475 if (status == RA_NOMATCH) |
5476 { | |
5477 scan = OPERAND(scan); | |
5478 status = RA_CONT; | |
5479 } | |
5480 break; | |
5481 | |
5482 case RS_NOMATCH: | |
5483 /* Pop the state. If the operand matches for NOMATCH or | |
5484 * doesn't match for MATCH/SUBPAT, we fail. Otherwise backup, | |
5485 * except for SUBPAT, and continue with the next item. */ | |
5486 if (status == (rp->rs_no == NOMATCH ? RA_MATCH : RA_NOMATCH)) | |
5487 status = RA_NOMATCH; | |
5488 else | |
5489 { | |
5490 status = RA_CONT; | |
233 | 5491 if (rp->rs_no != SUBPAT) /* zero-width */ |
5492 reg_restore(&rp->rs_un.regsave, &backpos); | |
180 | 5493 } |
270 | 5494 regstack_pop(&scan); |
180 | 5495 if (status == RA_CONT) |
5496 scan = regnext(scan); | |
5497 break; | |
5498 | |
5499 case RS_BEHIND1: | |
5500 if (status == RA_NOMATCH) | |
5501 { | |
270 | 5502 regstack_pop(&scan); |
180 | 5503 regstack.ga_len -= sizeof(regbehind_T); |
5504 } | |
5505 else | |
5506 { | |
5507 /* The stuff after BEHIND/NOBEHIND matches. Now try if | |
5508 * the behind part does (not) match before the current | |
5509 * position in the input. This must be done at every | |
5510 * position in the input and checking if the match ends at | |
5511 * the current position. */ | |
5512 | |
5513 /* save the position after the found match for next */ | |
233 | 5514 reg_save(&(((regbehind_T *)rp) - 1)->save_after, &backpos); |
180 | 5515 |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5516 /* Start looking for a match with operand at the current |
1209 | 5517 * position. Go back one character until we find the |
180 | 5518 * result, hitting the start of the line or the previous |
5519 * line (for multi-line matching). | |
5520 * Set behind_pos to where the match should end, BHPOS | |
5521 * will match it. Save the current value. */ | |
5522 (((regbehind_T *)rp) - 1)->save_behind = behind_pos; | |
5523 behind_pos = rp->rs_un.regsave; | |
5524 | |
5525 rp->rs_state = RS_BEHIND2; | |
5526 | |
233 | 5527 reg_restore(&rp->rs_un.regsave, &backpos); |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5528 scan = OPERAND(rp->rs_scan) + 4; |
180 | 5529 } |
5530 break; | |
5531 | |
5532 case RS_BEHIND2: | |
5533 /* | |
5534 * Looping for BEHIND / NOBEHIND match. | |
5535 */ | |
5536 if (status == RA_MATCH && reg_save_equal(&behind_pos)) | |
5537 { | |
5538 /* found a match that ends where "next" started */ | |
5539 behind_pos = (((regbehind_T *)rp) - 1)->save_behind; | |
5540 if (rp->rs_no == BEHIND) | |
233 | 5541 reg_restore(&(((regbehind_T *)rp) - 1)->save_after, |
5542 &backpos); | |
180 | 5543 else |
1579 | 5544 { |
5545 /* But we didn't want a match. Need to restore the | |
5546 * subexpr, because what follows matched, so they have | |
5547 * been set. */ | |
180 | 5548 status = RA_NOMATCH; |
1579 | 5549 restore_subexpr(((regbehind_T *)rp) - 1); |
5550 } | |
270 | 5551 regstack_pop(&scan); |
180 | 5552 regstack.ga_len -= sizeof(regbehind_T); |
5553 } | |
5554 else | |
5555 { | |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5556 long limit; |
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5557 |
1579 | 5558 /* No match or a match that doesn't end where we want it: Go |
5559 * back one character. May go to previous line once. */ | |
180 | 5560 no = OK; |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5561 limit = OPERAND_MIN(rp->rs_scan); |
180 | 5562 if (REG_MULTI) |
5563 { | |
4682
2f51ee8825db
updated for version 7.3.1088
Bram Moolenaar <bram@vim.org>
parents:
4679
diff
changeset
|
5564 if (limit > 0 |
2f51ee8825db
updated for version 7.3.1088
Bram Moolenaar <bram@vim.org>
parents:
4679
diff
changeset
|
5565 && ((rp->rs_un.regsave.rs_u.pos.lnum |
2f51ee8825db
updated for version 7.3.1088
Bram Moolenaar <bram@vim.org>
parents:
4679
diff
changeset
|
5566 < behind_pos.rs_u.pos.lnum |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5567 ? (colnr_T)STRLEN(rex.line) |
4682
2f51ee8825db
updated for version 7.3.1088
Bram Moolenaar <bram@vim.org>
parents:
4679
diff
changeset
|
5568 : behind_pos.rs_u.pos.col) |
2f51ee8825db
updated for version 7.3.1088
Bram Moolenaar <bram@vim.org>
parents:
4679
diff
changeset
|
5569 - rp->rs_un.regsave.rs_u.pos.col >= limit)) |
2f51ee8825db
updated for version 7.3.1088
Bram Moolenaar <bram@vim.org>
parents:
4679
diff
changeset
|
5570 no = FAIL; |
2f51ee8825db
updated for version 7.3.1088
Bram Moolenaar <bram@vim.org>
parents:
4679
diff
changeset
|
5571 else if (rp->rs_un.regsave.rs_u.pos.col == 0) |
180 | 5572 { |
5573 if (rp->rs_un.regsave.rs_u.pos.lnum | |
5574 < behind_pos.rs_u.pos.lnum | |
5575 || reg_getline( | |
5576 --rp->rs_un.regsave.rs_u.pos.lnum) | |
5577 == NULL) | |
5578 no = FAIL; | |
5579 else | |
5580 { | |
233 | 5581 reg_restore(&rp->rs_un.regsave, &backpos); |
180 | 5582 rp->rs_un.regsave.rs_u.pos.col = |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5583 (colnr_T)STRLEN(rex.line); |
180 | 5584 } |
5585 } | |
5586 else | |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5587 { |
4176 | 5588 #ifdef FEAT_MBYTE |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5589 if (has_mbyte) |
13286
a90bc1e28cbb
patch 8.0.1517: invalid memory acces with pattern using look-behind match
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
5590 { |
a90bc1e28cbb
patch 8.0.1517: invalid memory acces with pattern using look-behind match
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
5591 char_u *line = |
a90bc1e28cbb
patch 8.0.1517: invalid memory acces with pattern using look-behind match
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
5592 reg_getline(behind_pos.rs_u.pos.lnum); |
a90bc1e28cbb
patch 8.0.1517: invalid memory acces with pattern using look-behind match
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
5593 |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5594 rp->rs_un.regsave.rs_u.pos.col -= |
13286
a90bc1e28cbb
patch 8.0.1517: invalid memory acces with pattern using look-behind match
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
5595 (*mb_head_off)(line, line |
4176 | 5596 + rp->rs_un.regsave.rs_u.pos.col - 1) + 1; |
13286
a90bc1e28cbb
patch 8.0.1517: invalid memory acces with pattern using look-behind match
Christian Brabandt <cb@256bit.org>
parents:
13244
diff
changeset
|
5597 } |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5598 else |
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5599 #endif |
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5600 --rp->rs_un.regsave.rs_u.pos.col; |
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5601 } |
180 | 5602 } |
5603 else | |
5604 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5605 if (rp->rs_un.regsave.rs_u.ptr == rex.line) |
180 | 5606 no = FAIL; |
5607 else | |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5608 { |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5609 MB_PTR_BACK(rex.line, rp->rs_un.regsave.rs_u.ptr); |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5610 if (limit > 0 && (long)(behind_pos.rs_u.ptr |
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5611 - rp->rs_un.regsave.rs_u.ptr) > limit) |
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5612 no = FAIL; |
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5613 } |
180 | 5614 } |
5615 if (no == OK) | |
5616 { | |
5617 /* Advanced, prepare for finding match again. */ | |
233 | 5618 reg_restore(&rp->rs_un.regsave, &backpos); |
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4505
diff
changeset
|
5619 scan = OPERAND(rp->rs_scan) + 4; |
1579 | 5620 if (status == RA_MATCH) |
5621 { | |
5622 /* We did match, so subexpr may have been changed, | |
5623 * need to restore them for the next try. */ | |
5624 status = RA_NOMATCH; | |
5625 restore_subexpr(((regbehind_T *)rp) - 1); | |
5626 } | |
180 | 5627 } |
5628 else | |
5629 { | |
5630 /* Can't advance. For NOBEHIND that's a match. */ | |
5631 behind_pos = (((regbehind_T *)rp) - 1)->save_behind; | |
5632 if (rp->rs_no == NOBEHIND) | |
5633 { | |
233 | 5634 reg_restore(&(((regbehind_T *)rp) - 1)->save_after, |
5635 &backpos); | |
180 | 5636 status = RA_MATCH; |
5637 } | |
5638 else | |
1579 | 5639 { |
5640 /* We do want a proper match. Need to restore the | |
5641 * subexpr if we had a match, because they may have | |
5642 * been set. */ | |
5643 if (status == RA_MATCH) | |
5644 { | |
5645 status = RA_NOMATCH; | |
5646 restore_subexpr(((regbehind_T *)rp) - 1); | |
5647 } | |
5648 } | |
270 | 5649 regstack_pop(&scan); |
180 | 5650 regstack.ga_len -= sizeof(regbehind_T); |
5651 } | |
5652 } | |
5653 break; | |
5654 | |
5655 case RS_STAR_LONG: | |
5656 case RS_STAR_SHORT: | |
5657 { | |
5658 regstar_T *rst = ((regstar_T *)rp) - 1; | |
5659 | |
5660 if (status == RA_MATCH) | |
5661 { | |
270 | 5662 regstack_pop(&scan); |
180 | 5663 regstack.ga_len -= sizeof(regstar_T); |
5664 break; | |
5665 } | |
5666 | |
5667 /* Tried once already, restore input pointers. */ | |
5668 if (status != RA_BREAK) | |
233 | 5669 reg_restore(&rp->rs_un.regsave, &backpos); |
180 | 5670 |
5671 /* Repeat until we found a position where it could match. */ | |
5672 for (;;) | |
5673 { | |
5674 if (status != RA_BREAK) | |
5675 { | |
5676 /* Tried first position already, advance. */ | |
5677 if (rp->rs_state == RS_STAR_LONG) | |
5678 { | |
685 | 5679 /* Trying for longest match, but couldn't or |
5680 * didn't match -- back up one char. */ | |
180 | 5681 if (--rst->count < rst->minval) |
5682 break; | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5683 if (rex.input == rex.line) |
180 | 5684 { |
5685 /* backup to last char of previous line */ | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5686 --rex.lnum; |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5687 rex.line = reg_getline(rex.lnum); |
180 | 5688 /* Just in case regrepeat() didn't count |
5689 * right. */ | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5690 if (rex.line == NULL) |
180 | 5691 break; |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5692 rex.input = rex.line + STRLEN(rex.line); |
180 | 5693 fast_breakcheck(); |
5694 } | |
5695 else | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5696 MB_PTR_BACK(rex.line, rex.input); |
180 | 5697 } |
5698 else | |
5699 { | |
5700 /* Range is backwards, use shortest match first. | |
5701 * Careful: maxval and minval are exchanged! | |
5702 * Couldn't or didn't match: try advancing one | |
5703 * char. */ | |
5704 if (rst->count == rst->minval | |
5705 || regrepeat(OPERAND(rp->rs_scan), 1L) == 0) | |
5706 break; | |
5707 ++rst->count; | |
5708 } | |
5709 if (got_int) | |
5710 break; | |
5711 } | |
5712 else | |
5713 status = RA_NOMATCH; | |
5714 | |
5715 /* If it could match, try it. */ | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5716 if (rst->nextb == NUL || *rex.input == rst->nextb |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5717 || *rex.input == rst->nextb_ic) |
180 | 5718 { |
233 | 5719 reg_save(&rp->rs_un.regsave, &backpos); |
180 | 5720 scan = regnext(rp->rs_scan); |
5721 status = RA_CONT; | |
5722 break; | |
5723 } | |
5724 } | |
5725 if (status != RA_CONT) | |
5726 { | |
5727 /* Failed. */ | |
270 | 5728 regstack_pop(&scan); |
180 | 5729 regstack.ga_len -= sizeof(regstar_T); |
5730 status = RA_NOMATCH; | |
5731 } | |
5732 } | |
5733 break; | |
5734 } | |
5735 | |
685 | 5736 /* If we want to continue the inner loop or didn't pop a state |
5737 * continue matching loop */ | |
180 | 5738 if (status == RA_CONT || rp == (regitem_T *) |
5739 ((char *)regstack.ga_data + regstack.ga_len) - 1) | |
5740 break; | |
5741 } | |
5742 | |
189 | 5743 /* May need to continue with the inner loop, starting at "scan". */ |
180 | 5744 if (status == RA_CONT) |
5745 continue; | |
5746 | |
5747 /* | |
5748 * If the regstack is empty or something failed we are done. | |
5749 */ | |
5750 if (regstack.ga_len == 0 || status == RA_FAIL) | |
5751 { | |
5752 if (scan == NULL) | |
5753 { | |
5754 /* | |
5755 * We get here only if there's trouble -- normally "case END" is | |
5756 * the terminating point. | |
5757 */ | |
5758 EMSG(_(e_re_corr)); | |
7 | 5759 #ifdef DEBUG |
180 | 5760 printf("Premature EOL\n"); |
7 | 5761 #endif |
180 | 5762 } |
5763 return (status == RA_MATCH); | |
5764 } | |
5765 | |
5766 } /* End of loop until the regstack is empty. */ | |
5767 | |
5768 /* NOTREACHED */ | |
5769 } | |
5770 | |
5771 /* | |
5772 * Push an item onto the regstack. | |
5773 * Returns pointer to new item. Returns NULL when out of memory. | |
5774 */ | |
5775 static regitem_T * | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
5776 regstack_push(regstate_T state, char_u *scan) |
180 | 5777 { |
5778 regitem_T *rp; | |
5779 | |
270 | 5780 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
189 | 5781 { |
5782 EMSG(_(e_maxmempat)); | |
5783 return NULL; | |
5784 } | |
270 | 5785 if (ga_grow(®stack, sizeof(regitem_T)) == FAIL) |
180 | 5786 return NULL; |
5787 | |
270 | 5788 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len); |
180 | 5789 rp->rs_state = state; |
5790 rp->rs_scan = scan; | |
5791 | |
270 | 5792 regstack.ga_len += sizeof(regitem_T); |
180 | 5793 return rp; |
5794 } | |
5795 | |
5796 /* | |
5797 * Pop an item from the regstack. | |
5798 */ | |
5799 static void | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
5800 regstack_pop(char_u **scan) |
180 | 5801 { |
5802 regitem_T *rp; | |
5803 | |
270 | 5804 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1; |
180 | 5805 *scan = rp->rs_scan; |
5806 | |
270 | 5807 regstack.ga_len -= sizeof(regitem_T); |
7 | 5808 } |
5809 | |
5810 /* | |
5811 * regrepeat - repeatedly match something simple, return how many. | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5812 * Advances rex.input (and rex.lnum) to just after the matched chars. |
7 | 5813 */ |
5814 static int | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
5815 regrepeat( |
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
5816 char_u *p, |
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
5817 long maxcount) /* maximum number of matches allowed */ |
7 | 5818 { |
5819 long count = 0; | |
5820 char_u *scan; | |
5821 char_u *opnd; | |
5822 int mask; | |
5823 int testval = 0; | |
5824 | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5825 scan = rex.input; /* Make local copy of rex.input for speed. */ |
7 | 5826 opnd = OPERAND(p); |
5827 switch (OP(p)) | |
5828 { | |
5829 case ANY: | |
5830 case ANY + ADD_NL: | |
5831 while (count < maxcount) | |
5832 { | |
5833 /* Matching anything means we continue until end-of-line (or | |
5834 * end-of-file for ANY + ADD_NL), only limited by maxcount. */ | |
5835 while (*scan != NUL && count < maxcount) | |
5836 { | |
5837 ++count; | |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
5838 MB_PTR_ADV(scan); |
7 | 5839 } |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5840 if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5841 || rex.reg_line_lbr || count == maxcount) |
7 | 5842 break; |
5843 ++count; /* count the line-break */ | |
5844 reg_nextline(); | |
14354
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5845 scan = rex.input; |
7 | 5846 if (got_int) |
5847 break; | |
5848 } | |
5849 break; | |
5850 | |
5851 case IDENT: | |
5852 case IDENT + ADD_NL: | |
5853 testval = TRUE; | |
12674
e769c912fcd9
patch 8.0.1215: newer gcc warns for implicit fallthrough
Christian Brabandt <cb@256bit.org>
parents:
11529
diff
changeset
|
5854 /* FALLTHROUGH */ |
7 | 5855 case SIDENT: |
5856 case SIDENT + ADD_NL: | |
5857 while (count < maxcount) | |
5858 { | |
4466 | 5859 if (vim_isIDc(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan))) |
7 | 5860 { |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
5861 MB_PTR_ADV(scan); |
7 | 5862 } |
5863 else if (*scan == NUL) | |
5864 { | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5865 if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline |
10245
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5866 || rex.reg_line_lbr) |
7 | 5867 break; |
5868 reg_nextline(); | |
14354
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5869 scan = rex.input; |
7 | 5870 if (got_int) |
5871 break; | |
5872 } | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5873 else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) |
7 | 5874 ++scan; |
5875 else | |
5876 break; | |
5877 ++count; | |
5878 } | |
5879 break; | |
5880 | |
5881 case KWORD: | |
5882 case KWORD + ADD_NL: | |
5883 testval = TRUE; | |
12674
e769c912fcd9
patch 8.0.1215: newer gcc warns for implicit fallthrough
Christian Brabandt <cb@256bit.org>
parents:
11529
diff
changeset
|
5884 /* FALLTHROUGH */ |
7 | 5885 case SKWORD: |
5886 case SKWORD + ADD_NL: | |
5887 while (count < maxcount) | |
5888 { | |
10245
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5889 if (vim_iswordp_buf(scan, rex.reg_buf) |
4069 | 5890 && (testval || !VIM_ISDIGIT(*scan))) |
7 | 5891 { |
11127
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patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
5892 MB_PTR_ADV(scan); |
7 | 5893 } |
5894 else if (*scan == NUL) | |
5895 { | |
14354
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5896 if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline |
10245
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commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5897 || rex.reg_line_lbr) |
7 | 5898 break; |
5899 reg_nextline(); | |
14354
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Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5900 scan = rex.input; |
7 | 5901 if (got_int) |
5902 break; | |
5903 } | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5904 else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) |
7 | 5905 ++scan; |
5906 else | |
5907 break; | |
5908 ++count; | |
5909 } | |
5910 break; | |
5911 | |
5912 case FNAME: | |
5913 case FNAME + ADD_NL: | |
5914 testval = TRUE; | |
12674
e769c912fcd9
patch 8.0.1215: newer gcc warns for implicit fallthrough
Christian Brabandt <cb@256bit.org>
parents:
11529
diff
changeset
|
5915 /* FALLTHROUGH */ |
7 | 5916 case SFNAME: |
5917 case SFNAME + ADD_NL: | |
5918 while (count < maxcount) | |
5919 { | |
4466 | 5920 if (vim_isfilec(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan))) |
7 | 5921 { |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
5922 MB_PTR_ADV(scan); |
7 | 5923 } |
5924 else if (*scan == NUL) | |
5925 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5926 if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5927 || rex.reg_line_lbr) |
7 | 5928 break; |
5929 reg_nextline(); | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5930 scan = rex.input; |
7 | 5931 if (got_int) |
5932 break; | |
5933 } | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5934 else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) |
7 | 5935 ++scan; |
5936 else | |
5937 break; | |
5938 ++count; | |
5939 } | |
5940 break; | |
5941 | |
5942 case PRINT: | |
5943 case PRINT + ADD_NL: | |
5944 testval = TRUE; | |
12674
e769c912fcd9
patch 8.0.1215: newer gcc warns for implicit fallthrough
Christian Brabandt <cb@256bit.org>
parents:
11529
diff
changeset
|
5945 /* FALLTHROUGH */ |
7 | 5946 case SPRINT: |
5947 case SPRINT + ADD_NL: | |
5948 while (count < maxcount) | |
5949 { | |
5950 if (*scan == NUL) | |
5951 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5952 if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5953 || rex.reg_line_lbr) |
7 | 5954 break; |
5955 reg_nextline(); | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5956 scan = rex.input; |
7 | 5957 if (got_int) |
5958 break; | |
5959 } | |
5221
9982ec574beb
updated for version 7.4a.036
Bram Moolenaar <bram@vim.org>
parents:
4901
diff
changeset
|
5960 else if (vim_isprintc(PTR2CHAR(scan)) == 1 |
9982ec574beb
updated for version 7.4a.036
Bram Moolenaar <bram@vim.org>
parents:
4901
diff
changeset
|
5961 && (testval || !VIM_ISDIGIT(*scan))) |
7 | 5962 { |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
5963 MB_PTR_ADV(scan); |
7 | 5964 } |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5965 else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) |
7 | 5966 ++scan; |
5967 else | |
5968 break; | |
5969 ++count; | |
5970 } | |
5971 break; | |
5972 | |
5973 case WHITE: | |
5974 case WHITE + ADD_NL: | |
5975 testval = mask = RI_WHITE; | |
5976 do_class: | |
5977 while (count < maxcount) | |
5978 { | |
5979 #ifdef FEAT_MBYTE | |
5980 int l; | |
5981 #endif | |
5982 if (*scan == NUL) | |
5983 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5984 if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
5985 || rex.reg_line_lbr) |
7 | 5986 break; |
5987 reg_nextline(); | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
5988 scan = rex.input; |
7 | 5989 if (got_int) |
5990 break; | |
5991 } | |
5992 #ifdef FEAT_MBYTE | |
474 | 5993 else if (has_mbyte && (l = (*mb_ptr2len)(scan)) > 1) |
7 | 5994 { |
5995 if (testval != 0) | |
5996 break; | |
5997 scan += l; | |
5998 } | |
5999 #endif | |
6000 else if ((class_tab[*scan] & mask) == testval) | |
6001 ++scan; | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6002 else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) |
7 | 6003 ++scan; |
6004 else | |
6005 break; | |
6006 ++count; | |
6007 } | |
6008 break; | |
6009 | |
6010 case NWHITE: | |
6011 case NWHITE + ADD_NL: | |
6012 mask = RI_WHITE; | |
6013 goto do_class; | |
6014 case DIGIT: | |
6015 case DIGIT + ADD_NL: | |
6016 testval = mask = RI_DIGIT; | |
6017 goto do_class; | |
6018 case NDIGIT: | |
6019 case NDIGIT + ADD_NL: | |
6020 mask = RI_DIGIT; | |
6021 goto do_class; | |
6022 case HEX: | |
6023 case HEX + ADD_NL: | |
6024 testval = mask = RI_HEX; | |
6025 goto do_class; | |
6026 case NHEX: | |
6027 case NHEX + ADD_NL: | |
6028 mask = RI_HEX; | |
6029 goto do_class; | |
6030 case OCTAL: | |
6031 case OCTAL + ADD_NL: | |
6032 testval = mask = RI_OCTAL; | |
6033 goto do_class; | |
6034 case NOCTAL: | |
6035 case NOCTAL + ADD_NL: | |
6036 mask = RI_OCTAL; | |
6037 goto do_class; | |
6038 case WORD: | |
6039 case WORD + ADD_NL: | |
6040 testval = mask = RI_WORD; | |
6041 goto do_class; | |
6042 case NWORD: | |
6043 case NWORD + ADD_NL: | |
6044 mask = RI_WORD; | |
6045 goto do_class; | |
6046 case HEAD: | |
6047 case HEAD + ADD_NL: | |
6048 testval = mask = RI_HEAD; | |
6049 goto do_class; | |
6050 case NHEAD: | |
6051 case NHEAD + ADD_NL: | |
6052 mask = RI_HEAD; | |
6053 goto do_class; | |
6054 case ALPHA: | |
6055 case ALPHA + ADD_NL: | |
6056 testval = mask = RI_ALPHA; | |
6057 goto do_class; | |
6058 case NALPHA: | |
6059 case NALPHA + ADD_NL: | |
6060 mask = RI_ALPHA; | |
6061 goto do_class; | |
6062 case LOWER: | |
6063 case LOWER + ADD_NL: | |
6064 testval = mask = RI_LOWER; | |
6065 goto do_class; | |
6066 case NLOWER: | |
6067 case NLOWER + ADD_NL: | |
6068 mask = RI_LOWER; | |
6069 goto do_class; | |
6070 case UPPER: | |
6071 case UPPER + ADD_NL: | |
6072 testval = mask = RI_UPPER; | |
6073 goto do_class; | |
6074 case NUPPER: | |
6075 case NUPPER + ADD_NL: | |
6076 mask = RI_UPPER; | |
6077 goto do_class; | |
6078 | |
6079 case EXACTLY: | |
6080 { | |
6081 int cu, cl; | |
6082 | |
6083 /* This doesn't do a multi-byte character, because a MULTIBYTECODE | |
1347 | 6084 * would have been used for it. It does handle single-byte |
6085 * characters, such as latin1. */ | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6086 if (rex.reg_ic) |
7 | 6087 { |
1347 | 6088 cu = MB_TOUPPER(*opnd); |
6089 cl = MB_TOLOWER(*opnd); | |
7 | 6090 while (count < maxcount && (*scan == cu || *scan == cl)) |
6091 { | |
6092 count++; | |
6093 scan++; | |
6094 } | |
6095 } | |
6096 else | |
6097 { | |
6098 cu = *opnd; | |
6099 while (count < maxcount && *scan == cu) | |
6100 { | |
6101 count++; | |
6102 scan++; | |
6103 } | |
6104 } | |
6105 break; | |
6106 } | |
6107 | |
6108 #ifdef FEAT_MBYTE | |
6109 case MULTIBYTECODE: | |
6110 { | |
6111 int i, len, cf = 0; | |
6112 | |
6113 /* Safety check (just in case 'encoding' was changed since | |
6114 * compiling the program). */ | |
474 | 6115 if ((len = (*mb_ptr2len)(opnd)) > 1) |
7 | 6116 { |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6117 if (rex.reg_ic && enc_utf8) |
7 | 6118 cf = utf_fold(utf_ptr2char(opnd)); |
6785 | 6119 while (count < maxcount && (*mb_ptr2len)(scan) >= len) |
7 | 6120 { |
6121 for (i = 0; i < len; ++i) | |
6122 if (opnd[i] != scan[i]) | |
6123 break; | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6124 if (i < len && (!rex.reg_ic || !enc_utf8 |
7 | 6125 || utf_fold(utf_ptr2char(scan)) != cf)) |
6126 break; | |
6127 scan += len; | |
6128 ++count; | |
6129 } | |
6130 } | |
6131 } | |
6132 break; | |
6133 #endif | |
6134 | |
6135 case ANYOF: | |
6136 case ANYOF + ADD_NL: | |
6137 testval = TRUE; | |
12674
e769c912fcd9
patch 8.0.1215: newer gcc warns for implicit fallthrough
Christian Brabandt <cb@256bit.org>
parents:
11529
diff
changeset
|
6138 /* FALLTHROUGH */ |
7 | 6139 |
6140 case ANYBUT: | |
6141 case ANYBUT + ADD_NL: | |
6142 while (count < maxcount) | |
6143 { | |
6144 #ifdef FEAT_MBYTE | |
6145 int len; | |
6146 #endif | |
6147 if (*scan == NUL) | |
6148 { | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6149 if (!REG_MULTI || !WITH_NL(OP(p)) || rex.lnum > rex.reg_maxline |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6150 || rex.reg_line_lbr) |
7 | 6151 break; |
6152 reg_nextline(); | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6153 scan = rex.input; |
7 | 6154 if (got_int) |
6155 break; | |
6156 } | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6157 else if (rex.reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) |
7 | 6158 ++scan; |
6159 #ifdef FEAT_MBYTE | |
474 | 6160 else if (has_mbyte && (len = (*mb_ptr2len)(scan)) > 1) |
7 | 6161 { |
6162 if ((cstrchr(opnd, (*mb_ptr2char)(scan)) == NULL) == testval) | |
6163 break; | |
6164 scan += len; | |
6165 } | |
6166 #endif | |
6167 else | |
6168 { | |
6169 if ((cstrchr(opnd, *scan) == NULL) == testval) | |
6170 break; | |
6171 ++scan; | |
6172 } | |
6173 ++count; | |
6174 } | |
6175 break; | |
6176 | |
6177 case NEWL: | |
6178 while (count < maxcount | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6179 && ((*scan == NUL && rex.lnum <= rex.reg_maxline |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6180 && !rex.reg_line_lbr && REG_MULTI) |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6181 || (*scan == '\n' && rex.reg_line_lbr))) |
7 | 6182 { |
6183 count++; | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6184 if (rex.reg_line_lbr) |
7 | 6185 ADVANCE_REGINPUT(); |
6186 else | |
6187 reg_nextline(); | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6188 scan = rex.input; |
7 | 6189 if (got_int) |
6190 break; | |
6191 } | |
6192 break; | |
6193 | |
6194 default: /* Oh dear. Called inappropriately. */ | |
6195 EMSG(_(e_re_corr)); | |
6196 #ifdef DEBUG | |
6197 printf("Called regrepeat with op code %d\n", OP(p)); | |
6198 #endif | |
6199 break; | |
6200 } | |
6201 | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6202 rex.input = scan; |
7 | 6203 |
6204 return (int)count; | |
6205 } | |
6206 | |
6207 /* | |
6208 * regnext - dig the "next" pointer out of a node | |
2010 | 6209 * Returns NULL when calculating size, when there is no next item and when |
6210 * there is an error. | |
7 | 6211 */ |
6212 static char_u * | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6213 regnext(char_u *p) |
7 | 6214 { |
6215 int offset; | |
6216 | |
2010 | 6217 if (p == JUST_CALC_SIZE || reg_toolong) |
7 | 6218 return NULL; |
6219 | |
6220 offset = NEXT(p); | |
6221 if (offset == 0) | |
6222 return NULL; | |
6223 | |
233 | 6224 if (OP(p) == BACK) |
7 | 6225 return p - offset; |
6226 else | |
6227 return p + offset; | |
6228 } | |
6229 | |
6230 /* | |
6231 * Check the regexp program for its magic number. | |
6232 * Return TRUE if it's wrong. | |
6233 */ | |
6234 static int | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6235 prog_magic_wrong(void) |
7 | 6236 { |
4444 | 6237 regprog_T *prog; |
6238 | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6239 prog = REG_MULTI ? rex.reg_mmatch->regprog : rex.reg_match->regprog; |
4444 | 6240 if (prog->engine == &nfa_regengine) |
6241 /* For NFA matcher we don't check the magic */ | |
6242 return FALSE; | |
6243 | |
6244 if (UCHARAT(((bt_regprog_T *)prog)->program) != REGMAGIC) | |
7 | 6245 { |
6246 EMSG(_(e_re_corr)); | |
6247 return TRUE; | |
6248 } | |
6249 return FALSE; | |
6250 } | |
6251 | |
6252 /* | |
6253 * Cleanup the subexpressions, if this wasn't done yet. | |
6254 * This construction is used to clear the subexpressions only when they are | |
6255 * used (to increase speed). | |
6256 */ | |
6257 static void | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6258 cleanup_subexpr(void) |
7 | 6259 { |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6260 if (rex.need_clear_subexpr) |
7 | 6261 { |
6262 if (REG_MULTI) | |
6263 { | |
6264 /* Use 0xff to set lnum to -1 */ | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6265 vim_memset(rex.reg_startpos, 0xff, sizeof(lpos_T) * NSUBEXP); |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6266 vim_memset(rex.reg_endpos, 0xff, sizeof(lpos_T) * NSUBEXP); |
7 | 6267 } |
6268 else | |
6269 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6270 vim_memset(rex.reg_startp, 0, sizeof(char_u *) * NSUBEXP); |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6271 vim_memset(rex.reg_endp, 0, sizeof(char_u *) * NSUBEXP); |
7 | 6272 } |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6273 rex.need_clear_subexpr = FALSE; |
7 | 6274 } |
6275 } | |
6276 | |
6277 #ifdef FEAT_SYN_HL | |
6278 static void | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6279 cleanup_zsubexpr(void) |
7 | 6280 { |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6281 if (rex.need_clear_zsubexpr) |
7 | 6282 { |
6283 if (REG_MULTI) | |
6284 { | |
6285 /* Use 0xff to set lnum to -1 */ | |
6286 vim_memset(reg_startzpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
6287 vim_memset(reg_endzpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
6288 } | |
6289 else | |
6290 { | |
6291 vim_memset(reg_startzp, 0, sizeof(char_u *) * NSUBEXP); | |
6292 vim_memset(reg_endzp, 0, sizeof(char_u *) * NSUBEXP); | |
6293 } | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6294 rex.need_clear_zsubexpr = FALSE; |
7 | 6295 } |
6296 } | |
6297 #endif | |
6298 | |
6299 /* | |
1579 | 6300 * Save the current subexpr to "bp", so that they can be restored |
6301 * later by restore_subexpr(). | |
6302 */ | |
6303 static void | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6304 save_subexpr(regbehind_T *bp) |
1579 | 6305 { |
6306 int i; | |
6307 | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6308 /* When "rex.need_clear_subexpr" is set we don't need to save the values, only |
1602 | 6309 * remember that this flag needs to be set again when restoring. */ |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
6310 bp->save_need_clear_subexpr = rex.need_clear_subexpr; |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6311 if (!rex.need_clear_subexpr) |
1579 | 6312 { |
1602 | 6313 for (i = 0; i < NSUBEXP; ++i) |
1579 | 6314 { |
1602 | 6315 if (REG_MULTI) |
6316 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6317 bp->save_start[i].se_u.pos = rex.reg_startpos[i]; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6318 bp->save_end[i].se_u.pos = rex.reg_endpos[i]; |
1602 | 6319 } |
6320 else | |
6321 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6322 bp->save_start[i].se_u.ptr = rex.reg_startp[i]; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6323 bp->save_end[i].se_u.ptr = rex.reg_endp[i]; |
1602 | 6324 } |
1579 | 6325 } |
6326 } | |
6327 } | |
6328 | |
6329 /* | |
6330 * Restore the subexpr from "bp". | |
6331 */ | |
6332 static void | |
7833
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commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6333 restore_subexpr(regbehind_T *bp) |
1579 | 6334 { |
6335 int i; | |
6336 | |
1602 | 6337 /* Only need to restore saved values when they are not to be cleared. */ |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
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diff
changeset
|
6338 rex.need_clear_subexpr = bp->save_need_clear_subexpr; |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6339 if (!rex.need_clear_subexpr) |
1579 | 6340 { |
1602 | 6341 for (i = 0; i < NSUBEXP; ++i) |
1579 | 6342 { |
1602 | 6343 if (REG_MULTI) |
6344 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6345 rex.reg_startpos[i] = bp->save_start[i].se_u.pos; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6346 rex.reg_endpos[i] = bp->save_end[i].se_u.pos; |
1602 | 6347 } |
6348 else | |
6349 { | |
10245
d76ccdacb41e
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Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6350 rex.reg_startp[i] = bp->save_start[i].se_u.ptr; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
6351 rex.reg_endp[i] = bp->save_end[i].se_u.ptr; |
1602 | 6352 } |
1579 | 6353 } |
6354 } | |
6355 } | |
6356 | |
6357 /* | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
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diff
changeset
|
6358 * Advance rex.lnum, rex.line and rex.input to the next line. |
7 | 6359 */ |
6360 static void | |
7833
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6361 reg_nextline(void) |
7 | 6362 { |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6363 rex.line = reg_getline(++rex.lnum); |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6364 rex.input = rex.line; |
7 | 6365 fast_breakcheck(); |
6366 } | |
6367 | |
6368 /* | |
6369 * Save the input line and position in a regsave_T. | |
6370 */ | |
6371 static void | |
7833
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commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6372 reg_save(regsave_T *save, garray_T *gap) |
7 | 6373 { |
6374 if (REG_MULTI) | |
6375 { | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6376 save->rs_u.pos.col = (colnr_T)(rex.input - rex.line); |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
6377 save->rs_u.pos.lnum = rex.lnum; |
7 | 6378 } |
6379 else | |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
6380 save->rs_u.ptr = rex.input; |
233 | 6381 save->rs_len = gap->ga_len; |
7 | 6382 } |
6383 | |
6384 /* | |
6385 * Restore the input line and position from a regsave_T. | |
6386 */ | |
6387 static void | |
7833
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6388 reg_restore(regsave_T *save, garray_T *gap) |
7 | 6389 { |
6390 if (REG_MULTI) | |
6391 { | |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6392 if (rex.lnum != save->rs_u.pos.lnum) |
7 | 6393 { |
6394 /* only call reg_getline() when the line number changed to save | |
6395 * a bit of time */ | |
14354
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
6396 rex.lnum = save->rs_u.pos.lnum; |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6397 rex.line = reg_getline(rex.lnum); |
7 | 6398 } |
14354
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patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6399 rex.input = rex.line + save->rs_u.pos.col; |
7 | 6400 } |
6401 else | |
14354
ffd834f893aa
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parents:
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diff
changeset
|
6402 rex.input = save->rs_u.ptr; |
233 | 6403 gap->ga_len = save->rs_len; |
7 | 6404 } |
6405 | |
6406 /* | |
6407 * Return TRUE if current position is equal to saved position. | |
6408 */ | |
6409 static int | |
7833
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6410 reg_save_equal(regsave_T *save) |
7 | 6411 { |
6412 if (REG_MULTI) | |
14354
ffd834f893aa
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parents:
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diff
changeset
|
6413 return rex.lnum == save->rs_u.pos.lnum |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6414 && rex.input == rex.line + save->rs_u.pos.col; |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6415 return rex.input == save->rs_u.ptr; |
7 | 6416 } |
6417 | |
6418 /* | |
6419 * Tentatively set the sub-expression start to the current position (after | |
6420 * calling regmatch() they will have changed). Need to save the existing | |
6421 * values for when there is no match. | |
6422 * Use se_save() to use pointer (save_se_multi()) or position (save_se_one()), | |
6423 * depending on REG_MULTI. | |
6424 */ | |
6425 static void | |
7833
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6426 save_se_multi(save_se_T *savep, lpos_T *posp) |
7 | 6427 { |
6428 savep->se_u.pos = *posp; | |
14354
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parents:
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diff
changeset
|
6429 posp->lnum = rex.lnum; |
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
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parents:
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diff
changeset
|
6430 posp->col = (colnr_T)(rex.input - rex.line); |
7 | 6431 } |
6432 | |
6433 static void | |
7833
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Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6434 save_se_one(save_se_T *savep, char_u **pp) |
7 | 6435 { |
6436 savep->se_u.ptr = *pp; | |
14354
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parents:
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diff
changeset
|
6437 *pp = rex.input; |
7 | 6438 } |
6439 | |
6440 /* | |
6441 * Compare a number with the operand of RE_LNUM, RE_COL or RE_VCOL. | |
6442 */ | |
6443 static int | |
7833
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
6444 re_num_cmp(long_u val, char_u *scan) |
7 | 6445 { |
6446 long_u n = OPERAND_MIN(scan); | |
6447 | |
6448 if (OPERAND_CMP(scan) == '>') | |
6449 return val > n; | |
6450 if (OPERAND_CMP(scan) == '<') | |
6451 return val < n; | |
6452 return val == n; | |
6453 } | |
6454 | |
4891
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diff
changeset
|
6455 /* |
4c42efb4c098
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changeset
|
6456 * Check whether a backreference matches. |
4c42efb4c098
updated for version 7.3.1191
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diff
changeset
|
6457 * Returns RA_FAIL, RA_NOMATCH or RA_MATCH. |
5504 | 6458 * If "bytelen" is not NULL, it is set to the byte length of the match in the |
6459 * last line. | |
4891
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diff
changeset
|
6460 */ |
4c42efb4c098
updated for version 7.3.1191
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diff
changeset
|
6461 static int |
7833
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commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
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parents:
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diff
changeset
|
6462 match_with_backref( |
c079097365f3
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parents:
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diff
changeset
|
6463 linenr_T start_lnum, |
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
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parents:
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diff
changeset
|
6464 colnr_T start_col, |
c079097365f3
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parents:
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diff
changeset
|
6465 linenr_T end_lnum, |
c079097365f3
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parents:
7807
diff
changeset
|
6466 colnr_T end_col, |
c079097365f3
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diff
changeset
|
6467 int *bytelen) |
4891
4c42efb4c098
updated for version 7.3.1191
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diff
changeset
|
6468 { |
4c42efb4c098
updated for version 7.3.1191
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diff
changeset
|
6469 linenr_T clnum = start_lnum; |
4c42efb4c098
updated for version 7.3.1191
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diff
changeset
|
6470 colnr_T ccol = start_col; |
4c42efb4c098
updated for version 7.3.1191
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|
6471 int len; |
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updated for version 7.3.1191
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changeset
|
6472 char_u *p; |
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|
6473 |
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|
6474 if (bytelen != NULL) |
4c42efb4c098
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|
6475 *bytelen = 0; |
4c42efb4c098
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changeset
|
6476 for (;;) |
4c42efb4c098
updated for version 7.3.1191
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changeset
|
6477 { |
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changeset
|
6478 /* Since getting one line may invalidate the other, need to make copy. |
4c42efb4c098
updated for version 7.3.1191
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changeset
|
6479 * Slow! */ |
14354
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changeset
|
6480 if (rex.line != reg_tofree) |
4891
4c42efb4c098
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|
6481 { |
14354
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changeset
|
6482 len = (int)STRLEN(rex.line); |
4891
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|
6483 if (reg_tofree == NULL || len >= (int)reg_tofreelen) |
4c42efb4c098
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|
6484 { |
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changeset
|
6485 len += 50; /* get some extra */ |
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changeset
|
6486 vim_free(reg_tofree); |
4c42efb4c098
updated for version 7.3.1191
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changeset
|
6487 reg_tofree = alloc(len); |
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updated for version 7.3.1191
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changeset
|
6488 if (reg_tofree == NULL) |
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updated for version 7.3.1191
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changeset
|
6489 return RA_FAIL; /* out of memory!*/ |
4c42efb4c098
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changeset
|
6490 reg_tofreelen = len; |
4c42efb4c098
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changeset
|
6491 } |
14354
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changeset
|
6492 STRCPY(reg_tofree, rex.line); |
ffd834f893aa
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changeset
|
6493 rex.input = reg_tofree + (rex.input - rex.line); |
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changeset
|
6494 rex.line = reg_tofree; |
4891
4c42efb4c098
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|
6495 } |
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changeset
|
6496 |
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changeset
|
6497 /* Get the line to compare with. */ |
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changeset
|
6498 p = reg_getline(clnum); |
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updated for version 7.3.1191
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changeset
|
6499 if (clnum == end_lnum) |
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updated for version 7.3.1191
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changeset
|
6500 len = end_col - ccol; |
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|
6501 else |
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changeset
|
6502 len = (int)STRLEN(p + ccol); |
4c42efb4c098
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changeset
|
6503 |
14354
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changeset
|
6504 if (cstrncmp(p + ccol, rex.input, &len) != 0) |
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6505 return RA_NOMATCH; /* doesn't match */ |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6506 if (bytelen != NULL) |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6507 *bytelen += len; |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6508 if (clnum == end_lnum) |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6509 break; /* match and at end! */ |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6510 if (rex.lnum >= rex.reg_maxline) |
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6511 return RA_NOMATCH; /* text too short */ |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6512 |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6513 /* Advance to next line. */ |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6514 reg_nextline(); |
5504 | 6515 if (bytelen != NULL) |
6516 *bytelen = 0; | |
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6517 ++clnum; |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6518 ccol = 0; |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6519 if (got_int) |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6520 return RA_FAIL; |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6521 } |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6522 |
14354
ffd834f893aa
patch 8.1.0192: executing regexp recursively fails with a crash
Christian Brabandt <cb@256bit.org>
parents:
14169
diff
changeset
|
6523 /* found a match! Note that rex.line may now point to a copy of the line, |
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6524 * that should not matter. */ |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6525 return RA_MATCH; |
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6526 } |
7 | 6527 |
4444 | 6528 #ifdef BT_REGEXP_DUMP |
7 | 6529 |
6530 /* | |
6531 * regdump - dump a regexp onto stdout in vaguely comprehensible form | |
6532 */ | |
6533 static void | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6534 regdump(char_u *pattern, bt_regprog_T *r) |
7 | 6535 { |
6536 char_u *s; | |
6537 int op = EXACTLY; /* Arbitrary non-END op. */ | |
6538 char_u *next; | |
6539 char_u *end = NULL; | |
4444 | 6540 FILE *f; |
6541 | |
6542 #ifdef BT_REGEXP_LOG | |
6543 f = fopen("bt_regexp_log.log", "a"); | |
6544 #else | |
6545 f = stdout; | |
6546 #endif | |
6547 if (f == NULL) | |
6548 return; | |
6549 fprintf(f, "-------------------------------------\n\r\nregcomp(%s):\r\n", pattern); | |
7 | 6550 |
6551 s = r->program + 1; | |
6552 /* | |
6553 * Loop until we find the END that isn't before a referred next (an END | |
6554 * can also appear in a NOMATCH operand). | |
6555 */ | |
6556 while (op != END || s <= end) | |
6557 { | |
6558 op = OP(s); | |
4444 | 6559 fprintf(f, "%2d%s", (int)(s - r->program), regprop(s)); /* Where, what. */ |
7 | 6560 next = regnext(s); |
6561 if (next == NULL) /* Next ptr. */ | |
4444 | 6562 fprintf(f, "(0)"); |
7 | 6563 else |
4444 | 6564 fprintf(f, "(%d)", (int)((s - r->program) + (next - s))); |
7 | 6565 if (end < next) |
6566 end = next; | |
6567 if (op == BRACE_LIMITS) | |
6568 { | |
4746
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6569 /* Two ints */ |
4444 | 6570 fprintf(f, " minval %ld, maxval %ld", OPERAND_MIN(s), OPERAND_MAX(s)); |
7 | 6571 s += 8; |
6572 } | |
4746
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6573 else if (op == BEHIND || op == NOBEHIND) |
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6574 { |
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6575 /* one int */ |
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6576 fprintf(f, " count %ld", OPERAND_MIN(s)); |
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6577 s += 4; |
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6578 } |
4770
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6579 else if (op == RE_LNUM || op == RE_COL || op == RE_VCOL) |
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6580 { |
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6581 /* one int plus comperator */ |
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6582 fprintf(f, " count %ld", OPERAND_MIN(s)); |
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6583 s += 5; |
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6584 } |
7 | 6585 s += 3; |
6586 if (op == ANYOF || op == ANYOF + ADD_NL | |
6587 || op == ANYBUT || op == ANYBUT + ADD_NL | |
6588 || op == EXACTLY) | |
6589 { | |
6590 /* Literal string, where present. */ | |
4444 | 6591 fprintf(f, "\nxxxxxxxxx\n"); |
7 | 6592 while (*s != NUL) |
4444 | 6593 fprintf(f, "%c", *s++); |
6594 fprintf(f, "\nxxxxxxxxx\n"); | |
7 | 6595 s++; |
6596 } | |
4444 | 6597 fprintf(f, "\r\n"); |
7 | 6598 } |
6599 | |
6600 /* Header fields of interest. */ | |
6601 if (r->regstart != NUL) | |
4444 | 6602 fprintf(f, "start `%s' 0x%x; ", r->regstart < 256 |
7 | 6603 ? (char *)transchar(r->regstart) |
6604 : "multibyte", r->regstart); | |
6605 if (r->reganch) | |
4444 | 6606 fprintf(f, "anchored; "); |
7 | 6607 if (r->regmust != NULL) |
4444 | 6608 fprintf(f, "must have \"%s\"", r->regmust); |
6609 fprintf(f, "\r\n"); | |
6610 | |
6611 #ifdef BT_REGEXP_LOG | |
6612 fclose(f); | |
6613 #endif | |
7 | 6614 } |
4444 | 6615 #endif /* BT_REGEXP_DUMP */ |
6616 | |
6617 #ifdef DEBUG | |
7 | 6618 /* |
6619 * regprop - printable representation of opcode | |
6620 */ | |
6621 static char_u * | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
6622 regprop(char_u *op) |
7 | 6623 { |
4444 | 6624 char *p; |
6625 static char buf[50]; | |
6626 | |
6627 STRCPY(buf, ":"); | |
6628 | |
6629 switch ((int) OP(op)) | |
7 | 6630 { |
6631 case BOL: | |
6632 p = "BOL"; | |
6633 break; | |
6634 case EOL: | |
6635 p = "EOL"; | |
6636 break; | |
6637 case RE_BOF: | |
6638 p = "BOF"; | |
6639 break; | |
6640 case RE_EOF: | |
6641 p = "EOF"; | |
6642 break; | |
6643 case CURSOR: | |
6644 p = "CURSOR"; | |
6645 break; | |
639 | 6646 case RE_VISUAL: |
6647 p = "RE_VISUAL"; | |
6648 break; | |
7 | 6649 case RE_LNUM: |
6650 p = "RE_LNUM"; | |
6651 break; | |
639 | 6652 case RE_MARK: |
6653 p = "RE_MARK"; | |
6654 break; | |
7 | 6655 case RE_COL: |
6656 p = "RE_COL"; | |
6657 break; | |
6658 case RE_VCOL: | |
6659 p = "RE_VCOL"; | |
6660 break; | |
6661 case BOW: | |
6662 p = "BOW"; | |
6663 break; | |
6664 case EOW: | |
6665 p = "EOW"; | |
6666 break; | |
6667 case ANY: | |
6668 p = "ANY"; | |
6669 break; | |
6670 case ANY + ADD_NL: | |
6671 p = "ANY+NL"; | |
6672 break; | |
6673 case ANYOF: | |
6674 p = "ANYOF"; | |
6675 break; | |
6676 case ANYOF + ADD_NL: | |
6677 p = "ANYOF+NL"; | |
6678 break; | |
6679 case ANYBUT: | |
6680 p = "ANYBUT"; | |
6681 break; | |
6682 case ANYBUT + ADD_NL: | |
6683 p = "ANYBUT+NL"; | |
6684 break; | |
6685 case IDENT: | |
6686 p = "IDENT"; | |
6687 break; | |
6688 case IDENT + ADD_NL: | |
6689 p = "IDENT+NL"; | |
6690 break; | |
6691 case SIDENT: | |
6692 p = "SIDENT"; | |
6693 break; | |
6694 case SIDENT + ADD_NL: | |
6695 p = "SIDENT+NL"; | |
6696 break; | |
6697 case KWORD: | |
6698 p = "KWORD"; | |
6699 break; | |
6700 case KWORD + ADD_NL: | |
6701 p = "KWORD+NL"; | |
6702 break; | |
6703 case SKWORD: | |
6704 p = "SKWORD"; | |
6705 break; | |
6706 case SKWORD + ADD_NL: | |
6707 p = "SKWORD+NL"; | |
6708 break; | |
6709 case FNAME: | |
6710 p = "FNAME"; | |
6711 break; | |
6712 case FNAME + ADD_NL: | |
6713 p = "FNAME+NL"; | |
6714 break; | |
6715 case SFNAME: | |
6716 p = "SFNAME"; | |
6717 break; | |
6718 case SFNAME + ADD_NL: | |
6719 p = "SFNAME+NL"; | |
6720 break; | |
6721 case PRINT: | |
6722 p = "PRINT"; | |
6723 break; | |
6724 case PRINT + ADD_NL: | |
6725 p = "PRINT+NL"; | |
6726 break; | |
6727 case SPRINT: | |
6728 p = "SPRINT"; | |
6729 break; | |
6730 case SPRINT + ADD_NL: | |
6731 p = "SPRINT+NL"; | |
6732 break; | |
6733 case WHITE: | |
6734 p = "WHITE"; | |
6735 break; | |
6736 case WHITE + ADD_NL: | |
6737 p = "WHITE+NL"; | |
6738 break; | |
6739 case NWHITE: | |
6740 p = "NWHITE"; | |
6741 break; | |
6742 case NWHITE + ADD_NL: | |
6743 p = "NWHITE+NL"; | |
6744 break; | |
6745 case DIGIT: | |
6746 p = "DIGIT"; | |
6747 break; | |
6748 case DIGIT + ADD_NL: | |
6749 p = "DIGIT+NL"; | |
6750 break; | |
6751 case NDIGIT: | |
6752 p = "NDIGIT"; | |
6753 break; | |
6754 case NDIGIT + ADD_NL: | |
6755 p = "NDIGIT+NL"; | |
6756 break; | |
6757 case HEX: | |
6758 p = "HEX"; | |
6759 break; | |
6760 case HEX + ADD_NL: | |
6761 p = "HEX+NL"; | |
6762 break; | |
6763 case NHEX: | |
6764 p = "NHEX"; | |
6765 break; | |
6766 case NHEX + ADD_NL: | |
6767 p = "NHEX+NL"; | |
6768 break; | |
6769 case OCTAL: | |
6770 p = "OCTAL"; | |
6771 break; | |
6772 case OCTAL + ADD_NL: | |
6773 p = "OCTAL+NL"; | |
6774 break; | |
6775 case NOCTAL: | |
6776 p = "NOCTAL"; | |
6777 break; | |
6778 case NOCTAL + ADD_NL: | |
6779 p = "NOCTAL+NL"; | |
6780 break; | |
6781 case WORD: | |
6782 p = "WORD"; | |
6783 break; | |
6784 case WORD + ADD_NL: | |
6785 p = "WORD+NL"; | |
6786 break; | |
6787 case NWORD: | |
6788 p = "NWORD"; | |
6789 break; | |
6790 case NWORD + ADD_NL: | |
6791 p = "NWORD+NL"; | |
6792 break; | |
6793 case HEAD: | |
6794 p = "HEAD"; | |
6795 break; | |
6796 case HEAD + ADD_NL: | |
6797 p = "HEAD+NL"; | |
6798 break; | |
6799 case NHEAD: | |
6800 p = "NHEAD"; | |
6801 break; | |
6802 case NHEAD + ADD_NL: | |
6803 p = "NHEAD+NL"; | |
6804 break; | |
6805 case ALPHA: | |
6806 p = "ALPHA"; | |
6807 break; | |
6808 case ALPHA + ADD_NL: | |
6809 p = "ALPHA+NL"; | |
6810 break; | |
6811 case NALPHA: | |
6812 p = "NALPHA"; | |
6813 break; | |
6814 case NALPHA + ADD_NL: | |
6815 p = "NALPHA+NL"; | |
6816 break; | |
6817 case LOWER: | |
6818 p = "LOWER"; | |
6819 break; | |
6820 case LOWER + ADD_NL: | |
6821 p = "LOWER+NL"; | |
6822 break; | |
6823 case NLOWER: | |
6824 p = "NLOWER"; | |
6825 break; | |
6826 case NLOWER + ADD_NL: | |
6827 p = "NLOWER+NL"; | |
6828 break; | |
6829 case UPPER: | |
6830 p = "UPPER"; | |
6831 break; | |
6832 case UPPER + ADD_NL: | |
6833 p = "UPPER+NL"; | |
6834 break; | |
6835 case NUPPER: | |
6836 p = "NUPPER"; | |
6837 break; | |
6838 case NUPPER + ADD_NL: | |
6839 p = "NUPPER+NL"; | |
6840 break; | |
6841 case BRANCH: | |
6842 p = "BRANCH"; | |
6843 break; | |
6844 case EXACTLY: | |
6845 p = "EXACTLY"; | |
6846 break; | |
6847 case NOTHING: | |
6848 p = "NOTHING"; | |
6849 break; | |
6850 case BACK: | |
6851 p = "BACK"; | |
6852 break; | |
6853 case END: | |
6854 p = "END"; | |
6855 break; | |
6856 case MOPEN + 0: | |
6857 p = "MATCH START"; | |
6858 break; | |
6859 case MOPEN + 1: | |
6860 case MOPEN + 2: | |
6861 case MOPEN + 3: | |
6862 case MOPEN + 4: | |
6863 case MOPEN + 5: | |
6864 case MOPEN + 6: | |
6865 case MOPEN + 7: | |
6866 case MOPEN + 8: | |
6867 case MOPEN + 9: | |
6868 sprintf(buf + STRLEN(buf), "MOPEN%d", OP(op) - MOPEN); | |
6869 p = NULL; | |
6870 break; | |
6871 case MCLOSE + 0: | |
6872 p = "MATCH END"; | |
6873 break; | |
6874 case MCLOSE + 1: | |
6875 case MCLOSE + 2: | |
6876 case MCLOSE + 3: | |
6877 case MCLOSE + 4: | |
6878 case MCLOSE + 5: | |
6879 case MCLOSE + 6: | |
6880 case MCLOSE + 7: | |
6881 case MCLOSE + 8: | |
6882 case MCLOSE + 9: | |
6883 sprintf(buf + STRLEN(buf), "MCLOSE%d", OP(op) - MCLOSE); | |
6884 p = NULL; | |
6885 break; | |
6886 case BACKREF + 1: | |
6887 case BACKREF + 2: | |
6888 case BACKREF + 3: | |
6889 case BACKREF + 4: | |
6890 case BACKREF + 5: | |
6891 case BACKREF + 6: | |
6892 case BACKREF + 7: | |
6893 case BACKREF + 8: | |
6894 case BACKREF + 9: | |
6895 sprintf(buf + STRLEN(buf), "BACKREF%d", OP(op) - BACKREF); | |
6896 p = NULL; | |
6897 break; | |
6898 case NOPEN: | |
6899 p = "NOPEN"; | |
6900 break; | |
6901 case NCLOSE: | |
6902 p = "NCLOSE"; | |
6903 break; | |
6904 #ifdef FEAT_SYN_HL | |
6905 case ZOPEN + 1: | |
6906 case ZOPEN + 2: | |
6907 case ZOPEN + 3: | |
6908 case ZOPEN + 4: | |
6909 case ZOPEN + 5: | |
6910 case ZOPEN + 6: | |
6911 case ZOPEN + 7: | |
6912 case ZOPEN + 8: | |
6913 case ZOPEN + 9: | |
6914 sprintf(buf + STRLEN(buf), "ZOPEN%d", OP(op) - ZOPEN); | |
6915 p = NULL; | |
6916 break; | |
6917 case ZCLOSE + 1: | |
6918 case ZCLOSE + 2: | |
6919 case ZCLOSE + 3: | |
6920 case ZCLOSE + 4: | |
6921 case ZCLOSE + 5: | |
6922 case ZCLOSE + 6: | |
6923 case ZCLOSE + 7: | |
6924 case ZCLOSE + 8: | |
6925 case ZCLOSE + 9: | |
6926 sprintf(buf + STRLEN(buf), "ZCLOSE%d", OP(op) - ZCLOSE); | |
6927 p = NULL; | |
6928 break; | |
6929 case ZREF + 1: | |
6930 case ZREF + 2: | |
6931 case ZREF + 3: | |
6932 case ZREF + 4: | |
6933 case ZREF + 5: | |
6934 case ZREF + 6: | |
6935 case ZREF + 7: | |
6936 case ZREF + 8: | |
6937 case ZREF + 9: | |
6938 sprintf(buf + STRLEN(buf), "ZREF%d", OP(op) - ZREF); | |
6939 p = NULL; | |
6940 break; | |
6941 #endif | |
6942 case STAR: | |
6943 p = "STAR"; | |
6944 break; | |
6945 case PLUS: | |
6946 p = "PLUS"; | |
6947 break; | |
6948 case NOMATCH: | |
6949 p = "NOMATCH"; | |
6950 break; | |
6951 case MATCH: | |
6952 p = "MATCH"; | |
6953 break; | |
6954 case BEHIND: | |
6955 p = "BEHIND"; | |
6956 break; | |
6957 case NOBEHIND: | |
6958 p = "NOBEHIND"; | |
6959 break; | |
6960 case SUBPAT: | |
6961 p = "SUBPAT"; | |
6962 break; | |
6963 case BRACE_LIMITS: | |
6964 p = "BRACE_LIMITS"; | |
6965 break; | |
6966 case BRACE_SIMPLE: | |
6967 p = "BRACE_SIMPLE"; | |
6968 break; | |
6969 case BRACE_COMPLEX + 0: | |
6970 case BRACE_COMPLEX + 1: | |
6971 case BRACE_COMPLEX + 2: | |
6972 case BRACE_COMPLEX + 3: | |
6973 case BRACE_COMPLEX + 4: | |
6974 case BRACE_COMPLEX + 5: | |
6975 case BRACE_COMPLEX + 6: | |
6976 case BRACE_COMPLEX + 7: | |
6977 case BRACE_COMPLEX + 8: | |
6978 case BRACE_COMPLEX + 9: | |
6979 sprintf(buf + STRLEN(buf), "BRACE_COMPLEX%d", OP(op) - BRACE_COMPLEX); | |
6980 p = NULL; | |
6981 break; | |
6982 #ifdef FEAT_MBYTE | |
6983 case MULTIBYTECODE: | |
6984 p = "MULTIBYTECODE"; | |
6985 break; | |
6986 #endif | |
6987 case NEWL: | |
6988 p = "NEWL"; | |
6989 break; | |
6990 default: | |
6991 sprintf(buf + STRLEN(buf), "corrupt %d", OP(op)); | |
6992 p = NULL; | |
6993 break; | |
6994 } | |
6995 if (p != NULL) | |
4444 | 6996 STRCAT(buf, p); |
6997 return (char_u *)buf; | |
7 | 6998 } |
4444 | 6999 #endif /* DEBUG */ |
7 | 7000 |
6203 | 7001 /* |
7002 * Used in a place where no * or \+ can follow. | |
7003 */ | |
7004 static int | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
7005 re_mult_next(char *what) |
6203 | 7006 { |
7007 if (re_multi_type(peekchr()) == MULTI_MULT) | |
7008 EMSG2_RET_FAIL(_("E888: (NFA regexp) cannot repeat %s"), what); | |
7009 return OK; | |
7010 } | |
7011 | |
7 | 7012 #ifdef FEAT_MBYTE |
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parents:
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diff
changeset
|
7013 static void mb_decompose(int c, int *c1, int *c2, int *c3); |
7 | 7014 |
7015 typedef struct | |
7016 { | |
7017 int a, b, c; | |
7018 } decomp_T; | |
7019 | |
7020 | |
7021 /* 0xfb20 - 0xfb4f */ | |
297 | 7022 static decomp_T decomp_table[0xfb4f-0xfb20+1] = |
7 | 7023 { |
7024 {0x5e2,0,0}, /* 0xfb20 alt ayin */ | |
7025 {0x5d0,0,0}, /* 0xfb21 alt alef */ | |
7026 {0x5d3,0,0}, /* 0xfb22 alt dalet */ | |
7027 {0x5d4,0,0}, /* 0xfb23 alt he */ | |
7028 {0x5db,0,0}, /* 0xfb24 alt kaf */ | |
7029 {0x5dc,0,0}, /* 0xfb25 alt lamed */ | |
7030 {0x5dd,0,0}, /* 0xfb26 alt mem-sofit */ | |
7031 {0x5e8,0,0}, /* 0xfb27 alt resh */ | |
7032 {0x5ea,0,0}, /* 0xfb28 alt tav */ | |
7033 {'+', 0, 0}, /* 0xfb29 alt plus */ | |
7034 {0x5e9, 0x5c1, 0}, /* 0xfb2a shin+shin-dot */ | |
7035 {0x5e9, 0x5c2, 0}, /* 0xfb2b shin+sin-dot */ | |
7036 {0x5e9, 0x5c1, 0x5bc}, /* 0xfb2c shin+shin-dot+dagesh */ | |
7037 {0x5e9, 0x5c2, 0x5bc}, /* 0xfb2d shin+sin-dot+dagesh */ | |
7038 {0x5d0, 0x5b7, 0}, /* 0xfb2e alef+patah */ | |
7039 {0x5d0, 0x5b8, 0}, /* 0xfb2f alef+qamats */ | |
7040 {0x5d0, 0x5b4, 0}, /* 0xfb30 alef+hiriq */ | |
7041 {0x5d1, 0x5bc, 0}, /* 0xfb31 bet+dagesh */ | |
7042 {0x5d2, 0x5bc, 0}, /* 0xfb32 gimel+dagesh */ | |
7043 {0x5d3, 0x5bc, 0}, /* 0xfb33 dalet+dagesh */ | |
7044 {0x5d4, 0x5bc, 0}, /* 0xfb34 he+dagesh */ | |
7045 {0x5d5, 0x5bc, 0}, /* 0xfb35 vav+dagesh */ | |
7046 {0x5d6, 0x5bc, 0}, /* 0xfb36 zayin+dagesh */ | |
7047 {0xfb37, 0, 0}, /* 0xfb37 -- UNUSED */ | |
7048 {0x5d8, 0x5bc, 0}, /* 0xfb38 tet+dagesh */ | |
7049 {0x5d9, 0x5bc, 0}, /* 0xfb39 yud+dagesh */ | |
7050 {0x5da, 0x5bc, 0}, /* 0xfb3a kaf sofit+dagesh */ | |
7051 {0x5db, 0x5bc, 0}, /* 0xfb3b kaf+dagesh */ | |
7052 {0x5dc, 0x5bc, 0}, /* 0xfb3c lamed+dagesh */ | |
7053 {0xfb3d, 0, 0}, /* 0xfb3d -- UNUSED */ | |
7054 {0x5de, 0x5bc, 0}, /* 0xfb3e mem+dagesh */ | |
7055 {0xfb3f, 0, 0}, /* 0xfb3f -- UNUSED */ | |
7056 {0x5e0, 0x5bc, 0}, /* 0xfb40 nun+dagesh */ | |
7057 {0x5e1, 0x5bc, 0}, /* 0xfb41 samech+dagesh */ | |
7058 {0xfb42, 0, 0}, /* 0xfb42 -- UNUSED */ | |
7059 {0x5e3, 0x5bc, 0}, /* 0xfb43 pe sofit+dagesh */ | |
7060 {0x5e4, 0x5bc,0}, /* 0xfb44 pe+dagesh */ | |
7061 {0xfb45, 0, 0}, /* 0xfb45 -- UNUSED */ | |
7062 {0x5e6, 0x5bc, 0}, /* 0xfb46 tsadi+dagesh */ | |
7063 {0x5e7, 0x5bc, 0}, /* 0xfb47 qof+dagesh */ | |
7064 {0x5e8, 0x5bc, 0}, /* 0xfb48 resh+dagesh */ | |
7065 {0x5e9, 0x5bc, 0}, /* 0xfb49 shin+dagesh */ | |
7066 {0x5ea, 0x5bc, 0}, /* 0xfb4a tav+dagesh */ | |
7067 {0x5d5, 0x5b9, 0}, /* 0xfb4b vav+holam */ | |
7068 {0x5d1, 0x5bf, 0}, /* 0xfb4c bet+rafe */ | |
7069 {0x5db, 0x5bf, 0}, /* 0xfb4d kaf+rafe */ | |
7070 {0x5e4, 0x5bf, 0}, /* 0xfb4e pe+rafe */ | |
7071 {0x5d0, 0x5dc, 0} /* 0xfb4f alef-lamed */ | |
7072 }; | |
7073 | |
7074 static void | |
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diff
changeset
|
7075 mb_decompose(int c, int *c1, int *c2, int *c3) |
7 | 7076 { |
7077 decomp_T d; | |
7078 | |
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7079 if (c >= 0xfb20 && c <= 0xfb4f) |
7 | 7080 { |
7081 d = decomp_table[c - 0xfb20]; | |
7082 *c1 = d.a; | |
7083 *c2 = d.b; | |
7084 *c3 = d.c; | |
7085 } | |
7086 else | |
7087 { | |
7088 *c1 = c; | |
7089 *c2 = *c3 = 0; | |
7090 } | |
7091 } | |
7092 #endif | |
7093 | |
7094 /* | |
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parents:
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diff
changeset
|
7095 * Compare two strings, ignore case if rex.reg_ic set. |
7 | 7096 * Return 0 if strings match, non-zero otherwise. |
7097 * Correct the length "*n" when composing characters are ignored. | |
7098 */ | |
7099 static int | |
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diff
changeset
|
7100 cstrncmp(char_u *s1, char_u *s2, int *n) |
7 | 7101 { |
7102 int result; | |
7103 | |
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diff
changeset
|
7104 if (!rex.reg_ic) |
7 | 7105 result = STRNCMP(s1, s2, *n); |
7106 else | |
7107 result = MB_STRNICMP(s1, s2, *n); | |
7108 | |
7109 #ifdef FEAT_MBYTE | |
7110 /* if it failed and it's utf8 and we want to combineignore: */ | |
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parents:
10187
diff
changeset
|
7111 if (result != 0 && enc_utf8 && rex.reg_icombine) |
7 | 7112 { |
7113 char_u *str1, *str2; | |
7114 int c1, c2, c11, c12; | |
7115 int junk; | |
7116 | |
7117 /* we have to handle the strcmp ourselves, since it is necessary to | |
7118 * deal with the composing characters by ignoring them: */ | |
7119 str1 = s1; | |
7120 str2 = s2; | |
7121 c1 = c2 = 0; | |
507 | 7122 while ((int)(str1 - s1) < *n) |
7 | 7123 { |
7124 c1 = mb_ptr2char_adv(&str1); | |
7125 c2 = mb_ptr2char_adv(&str2); | |
7126 | |
7127 /* decompose the character if necessary, into 'base' characters | |
7128 * because I don't care about Arabic, I will hard-code the Hebrew | |
7129 * which I *do* care about! So sue me... */ | |
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diff
changeset
|
7130 if (c1 != c2 && (!rex.reg_ic || utf_fold(c1) != utf_fold(c2))) |
7 | 7131 { |
7132 /* decomposition necessary? */ | |
7133 mb_decompose(c1, &c11, &junk, &junk); | |
7134 mb_decompose(c2, &c12, &junk, &junk); | |
7135 c1 = c11; | |
7136 c2 = c12; | |
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diff
changeset
|
7137 if (c11 != c12 |
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diff
changeset
|
7138 && (!rex.reg_ic || utf_fold(c11) != utf_fold(c12))) |
7 | 7139 break; |
7140 } | |
7141 } | |
7142 result = c2 - c1; | |
7143 if (result == 0) | |
7144 *n = (int)(str2 - s2); | |
7145 } | |
7146 #endif | |
7147 | |
7148 return result; | |
7149 } | |
7150 | |
7151 /* | |
7152 * cstrchr: This function is used a lot for simple searches, keep it fast! | |
7153 */ | |
7154 static char_u * | |
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diff
changeset
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7155 cstrchr(char_u *s, int c) |
7 | 7156 { |
7157 char_u *p; | |
7158 int cc; | |
7159 | |
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changeset
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7160 if (!rex.reg_ic |
7 | 7161 #ifdef FEAT_MBYTE |
7162 || (!enc_utf8 && mb_char2len(c) > 1) | |
7163 #endif | |
7164 ) | |
7165 return vim_strchr(s, c); | |
7166 | |
7167 /* tolower() and toupper() can be slow, comparing twice should be a lot | |
7168 * faster (esp. when using MS Visual C++!). | |
7169 * For UTF-8 need to use folded case. */ | |
7170 #ifdef FEAT_MBYTE | |
7171 if (enc_utf8 && c > 0x80) | |
7172 cc = utf_fold(c); | |
7173 else | |
7174 #endif | |
1347 | 7175 if (MB_ISUPPER(c)) |
7176 cc = MB_TOLOWER(c); | |
7177 else if (MB_ISLOWER(c)) | |
7178 cc = MB_TOUPPER(c); | |
7 | 7179 else |
7180 return vim_strchr(s, c); | |
7181 | |
7182 #ifdef FEAT_MBYTE | |
7183 if (has_mbyte) | |
7184 { | |
474 | 7185 for (p = s; *p != NUL; p += (*mb_ptr2len)(p)) |
7 | 7186 { |
7187 if (enc_utf8 && c > 0x80) | |
7188 { | |
7189 if (utf_fold(utf_ptr2char(p)) == cc) | |
7190 return p; | |
7191 } | |
7192 else if (*p == c || *p == cc) | |
7193 return p; | |
7194 } | |
7195 } | |
7196 else | |
7197 #endif | |
7198 /* Faster version for when there are no multi-byte characters. */ | |
7199 for (p = s; *p != NUL; ++p) | |
7200 if (*p == c || *p == cc) | |
7201 return p; | |
7202 | |
7203 return NULL; | |
7204 } | |
7205 | |
7206 /*************************************************************** | |
7207 * regsub stuff * | |
7208 ***************************************************************/ | |
7209 | |
7210 /* | |
7211 * We should define ftpr as a pointer to a function returning a pointer to | |
7212 * a function returning a pointer to a function ... | |
7213 * This is impossible, so we declare a pointer to a function returning a | |
7214 * pointer to a function returning void. This should work for all compilers. | |
7215 */ | |
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diff
changeset
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7216 typedef void (*(*fptr_T)(int *, int))(); |
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diff
changeset
|
7217 |
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7218 static fptr_T do_upper(int *, int); |
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7219 static fptr_T do_Upper(int *, int); |
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7220 static fptr_T do_lower(int *, int); |
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7221 static fptr_T do_Lower(int *, int); |
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7222 |
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changeset
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7223 static int vim_regsub_both(char_u *source, typval_T *expr, char_u *dest, int copy, int magic, int backslash); |
7 | 7224 |
772 | 7225 static fptr_T |
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diff
changeset
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7226 do_upper(int *d, int c) |
7 | 7227 { |
772 | 7228 *d = MB_TOUPPER(c); |
7229 | |
7230 return (fptr_T)NULL; | |
7 | 7231 } |
7232 | |
772 | 7233 static fptr_T |
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changeset
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7234 do_Upper(int *d, int c) |
7 | 7235 { |
772 | 7236 *d = MB_TOUPPER(c); |
7237 | |
7238 return (fptr_T)do_Upper; | |
7239 } | |
7240 | |
7241 static fptr_T | |
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changeset
|
7242 do_lower(int *d, int c) |
772 | 7243 { |
7244 *d = MB_TOLOWER(c); | |
7245 | |
7246 return (fptr_T)NULL; | |
7247 } | |
7248 | |
7249 static fptr_T | |
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changeset
|
7250 do_Lower(int *d, int c) |
772 | 7251 { |
7252 *d = MB_TOLOWER(c); | |
7253 | |
7254 return (fptr_T)do_Lower; | |
7 | 7255 } |
7256 | |
7257 /* | |
7258 * regtilde(): Replace tildes in the pattern by the old pattern. | |
7259 * | |
7260 * Short explanation of the tilde: It stands for the previous replacement | |
7261 * pattern. If that previous pattern also contains a ~ we should go back a | |
7262 * step further... But we insert the previous pattern into the current one | |
7263 * and remember that. | |
772 | 7264 * This still does not handle the case where "magic" changes. So require the |
7265 * user to keep his hands off of "magic". | |
7 | 7266 * |
7267 * The tildes are parsed once before the first call to vim_regsub(). | |
7268 */ | |
7269 char_u * | |
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diff
changeset
|
7270 regtilde(char_u *source, int magic) |
7 | 7271 { |
7272 char_u *newsub = source; | |
7273 char_u *tmpsub; | |
7274 char_u *p; | |
7275 int len; | |
7276 int prevlen; | |
7277 | |
7278 for (p = newsub; *p; ++p) | |
7279 { | |
7280 if ((*p == '~' && magic) || (*p == '\\' && *(p + 1) == '~' && !magic)) | |
7281 { | |
7282 if (reg_prev_sub != NULL) | |
7283 { | |
7284 /* length = len(newsub) - 1 + len(prev_sub) + 1 */ | |
7285 prevlen = (int)STRLEN(reg_prev_sub); | |
7286 tmpsub = alloc((unsigned)(STRLEN(newsub) + prevlen)); | |
7287 if (tmpsub != NULL) | |
7288 { | |
7289 /* copy prefix */ | |
7290 len = (int)(p - newsub); /* not including ~ */ | |
7291 mch_memmove(tmpsub, newsub, (size_t)len); | |
1209 | 7292 /* interpret tilde */ |
7 | 7293 mch_memmove(tmpsub + len, reg_prev_sub, (size_t)prevlen); |
7294 /* copy postfix */ | |
7295 if (!magic) | |
7296 ++p; /* back off \ */ | |
7297 STRCPY(tmpsub + len + prevlen, p + 1); | |
7298 | |
7299 if (newsub != source) /* already allocated newsub */ | |
7300 vim_free(newsub); | |
7301 newsub = tmpsub; | |
7302 p = newsub + len + prevlen; | |
7303 } | |
7304 } | |
7305 else if (magic) | |
1621 | 7306 STRMOVE(p, p + 1); /* remove '~' */ |
7 | 7307 else |
1621 | 7308 STRMOVE(p, p + 2); /* remove '\~' */ |
7 | 7309 --p; |
7310 } | |
7311 else | |
7312 { | |
7313 if (*p == '\\' && p[1]) /* skip escaped characters */ | |
7314 ++p; | |
7315 #ifdef FEAT_MBYTE | |
7316 if (has_mbyte) | |
474 | 7317 p += (*mb_ptr2len)(p) - 1; |
7 | 7318 #endif |
7319 } | |
7320 } | |
7321 | |
7322 vim_free(reg_prev_sub); | |
7323 if (newsub != source) /* newsub was allocated, just keep it */ | |
7324 reg_prev_sub = newsub; | |
7325 else /* no ~ found, need to save newsub */ | |
7326 reg_prev_sub = vim_strsave(newsub); | |
7327 return newsub; | |
7328 } | |
7329 | |
7330 #ifdef FEAT_EVAL | |
7331 static int can_f_submatch = FALSE; /* TRUE when submatch() can be used */ | |
7332 | |
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|
7333 /* These pointers are used for reg_submatch(). Needed for when the |
d76ccdacb41e
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diff
changeset
|
7334 * substitution string is an expression that contains a call to substitute() |
d76ccdacb41e
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diff
changeset
|
7335 * and submatch(). */ |
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|
7336 typedef struct { |
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|
7337 regmatch_T *sm_match; |
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diff
changeset
|
7338 regmmatch_T *sm_mmatch; |
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diff
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|
7339 linenr_T sm_firstlnum; |
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diff
changeset
|
7340 linenr_T sm_maxline; |
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changeset
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7341 int sm_line_lbr; |
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|
7342 } regsubmatch_T; |
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7343 |
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|
7344 static regsubmatch_T rsm; /* can only be used when can_f_submatch is TRUE */ |
7 | 7345 #endif |
7346 | |
7347 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) || defined(PROTO) | |
9626
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7348 |
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|
7349 /* |
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|
7350 * Put the submatches in "argv[0]" which is a list passed into call_func() by |
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|
7351 * vim_regsub_both(). |
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|
7352 */ |
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|
7353 static int |
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7354 fill_submatch_list(int argc UNUSED, typval_T *argv, int argcount) |
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7355 { |
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7356 listitem_T *li; |
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7357 int i; |
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|
7358 char_u *s; |
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|
7359 |
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7360 if (argcount == 0) |
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7361 /* called function doesn't take an argument */ |
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7362 return 0; |
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7363 |
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7364 /* Relies on sl_list to be the first item in staticList10_T. */ |
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|
7365 init_static_list((staticList10_T *)(argv->vval.v_list)); |
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7366 |
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7367 /* There are always 10 list items in staticList10_T. */ |
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7368 li = argv->vval.v_list->lv_first; |
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7369 for (i = 0; i < 10; ++i) |
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|
7370 { |
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7371 s = rsm.sm_match->startp[i]; |
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7372 if (s == NULL || rsm.sm_match->endp[i] == NULL) |
9626
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|
7373 s = NULL; |
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|
7374 else |
10245
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|
7375 s = vim_strnsave(s, (int)(rsm.sm_match->endp[i] - s)); |
9626
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|
7376 li->li_tv.v_type = VAR_STRING; |
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|
7377 li->li_tv.vval.v_string = s; |
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|
7378 li = li->li_next; |
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7379 } |
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7380 return 1; |
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|
7381 } |
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|
7382 |
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|
7383 static void |
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|
7384 clear_submatch_list(staticList10_T *sl) |
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7385 { |
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7386 int i; |
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|
7387 |
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7388 for (i = 0; i < 10; ++i) |
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|
7389 vim_free(sl->sl_items[i].li_tv.vval.v_string); |
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7390 } |
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7391 |
7 | 7392 /* |
7393 * vim_regsub() - perform substitutions after a vim_regexec() or | |
7394 * vim_regexec_multi() match. | |
7395 * | |
7396 * If "copy" is TRUE really copy into "dest". | |
7397 * If "copy" is FALSE nothing is copied, this is just to find out the length | |
7398 * of the result. | |
7399 * | |
7400 * If "backslash" is TRUE, a backslash will be removed later, need to double | |
7401 * them to keep them, and insert a backslash before a CR to avoid it being | |
7402 * replaced with a line break later. | |
7403 * | |
7404 * Note: The matched text must not change between the call of | |
7405 * vim_regexec()/vim_regexec_multi() and vim_regsub()! It would make the back | |
7406 * references invalid! | |
7407 * | |
7408 * Returns the size of the replacement, including terminating NUL. | |
7409 */ | |
7410 int | |
7833
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|
7411 vim_regsub( |
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|
7412 regmatch_T *rmp, |
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|
7413 char_u *source, |
9589
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|
7414 typval_T *expr, |
7833
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|
7415 char_u *dest, |
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|
7416 int copy, |
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|
7417 int magic, |
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|
7418 int backslash) |
7 | 7419 { |
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|
7420 int result; |
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|
7421 regexec_T rex_save; |
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|
7422 int rex_in_use_save = rex_in_use; |
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7423 |
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|
7424 if (rex_in_use) |
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|
7425 /* Being called recursively, save the state. */ |
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7426 rex_save = rex; |
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7427 rex_in_use = TRUE; |
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7428 |
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|
7429 rex.reg_match = rmp; |
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7430 rex.reg_mmatch = NULL; |
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7431 rex.reg_maxline = 0; |
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7432 rex.reg_buf = curbuf; |
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7433 rex.reg_line_lbr = TRUE; |
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7434 result = vim_regsub_both(source, expr, dest, copy, magic, backslash); |
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7435 |
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7436 rex_in_use = rex_in_use_save; |
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7437 if (rex_in_use) |
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7438 rex = rex_save; |
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7439 |
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|
7440 return result; |
7 | 7441 } |
7442 #endif | |
7443 | |
7444 int | |
7833
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|
7445 vim_regsub_multi( |
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7446 regmmatch_T *rmp, |
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7447 linenr_T lnum, |
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7448 char_u *source, |
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7449 char_u *dest, |
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7450 int copy, |
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7451 int magic, |
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7452 int backslash) |
7 | 7453 { |
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7454 int result; |
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|
7455 regexec_T rex_save; |
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|
7456 int rex_in_use_save = rex_in_use; |
d76ccdacb41e
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|
7457 |
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|
7458 if (rex_in_use) |
d76ccdacb41e
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|
7459 /* Being called recursively, save the state. */ |
d76ccdacb41e
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|
7460 rex_save = rex; |
d76ccdacb41e
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|
7461 rex_in_use = TRUE; |
d76ccdacb41e
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|
7462 |
d76ccdacb41e
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|
7463 rex.reg_match = NULL; |
d76ccdacb41e
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|
7464 rex.reg_mmatch = rmp; |
d76ccdacb41e
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diff
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|
7465 rex.reg_buf = curbuf; /* always works on the current buffer! */ |
d76ccdacb41e
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|
7466 rex.reg_firstlnum = lnum; |
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|
7467 rex.reg_maxline = curbuf->b_ml.ml_line_count - lnum; |
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|
7468 rex.reg_line_lbr = FALSE; |
d76ccdacb41e
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|
7469 result = vim_regsub_both(source, NULL, dest, copy, magic, backslash); |
d76ccdacb41e
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|
7470 |
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|
7471 rex_in_use = rex_in_use_save; |
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|
7472 if (rex_in_use) |
d76ccdacb41e
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|
7473 rex = rex_save; |
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|
7474 |
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7475 return result; |
7 | 7476 } |
7477 | |
7478 static int | |
7833
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7479 vim_regsub_both( |
c079097365f3
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|
7480 char_u *source, |
9589
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|
7481 typval_T *expr, |
7833
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|
7482 char_u *dest, |
c079097365f3
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|
7483 int copy, |
c079097365f3
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|
7484 int magic, |
c079097365f3
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|
7485 int backslash) |
7 | 7486 { |
7487 char_u *src; | |
7488 char_u *dst; | |
7489 char_u *s; | |
7490 int c; | |
772 | 7491 int cc; |
7 | 7492 int no = -1; |
4244 | 7493 fptr_T func_all = (fptr_T)NULL; |
7494 fptr_T func_one = (fptr_T)NULL; | |
7 | 7495 linenr_T clnum = 0; /* init for GCC */ |
7496 int len = 0; /* init for GCC */ | |
7497 #ifdef FEAT_EVAL | |
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|
7498 static char_u *eval_result = NULL; |
7 | 7499 #endif |
7500 | |
7501 /* Be paranoid... */ | |
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|
7502 if ((source == NULL && expr == NULL) || dest == NULL) |
7 | 7503 { |
7504 EMSG(_(e_null)); | |
7505 return 0; | |
7506 } | |
7507 if (prog_magic_wrong()) | |
7508 return 0; | |
7509 src = source; | |
7510 dst = dest; | |
7511 | |
7512 /* | |
7513 * When the substitute part starts with "\=" evaluate it as an expression. | |
7514 */ | |
10245
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7515 if (expr != NULL || (source[0] == '\\' && source[1] == '=')) |
7 | 7516 { |
7517 #ifdef FEAT_EVAL | |
7518 /* To make sure that the length doesn't change between checking the | |
7519 * length and copying the string, and to speed up things, the | |
7520 * resulting string is saved from the call with "copy" == FALSE to the | |
7521 * call with "copy" == TRUE. */ | |
7522 if (copy) | |
7523 { | |
7524 if (eval_result != NULL) | |
7525 { | |
7526 STRCPY(dest, eval_result); | |
7527 dst += STRLEN(eval_result); | |
13244
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|
7528 VIM_CLEAR(eval_result); |
7 | 7529 } |
7530 } | |
7531 else | |
7532 { | |
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7533 int prev_can_f_submatch = can_f_submatch; |
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7534 regsubmatch_T rsm_save; |
7 | 7535 |
7536 vim_free(eval_result); | |
7537 | |
7538 /* The expression may contain substitute(), which calls us | |
7539 * recursively. Make sure submatch() gets the text from the first | |
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7540 * level. */ |
d76ccdacb41e
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|
7541 if (can_f_submatch) |
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7542 rsm_save = rsm; |
7 | 7543 can_f_submatch = TRUE; |
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7544 rsm.sm_match = rex.reg_match; |
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7545 rsm.sm_mmatch = rex.reg_mmatch; |
d76ccdacb41e
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7546 rsm.sm_firstlnum = rex.reg_firstlnum; |
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|
7547 rsm.sm_maxline = rex.reg_maxline; |
d76ccdacb41e
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7548 rsm.sm_line_lbr = rex.reg_line_lbr; |
7 | 7549 |
9589
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|
7550 if (expr != NULL) |
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7551 { |
9626
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7552 typval_T argv[2]; |
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7553 int dummy; |
bf204ab1ce7d
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|
7554 char_u buf[NUMBUFLEN]; |
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|
7555 typval_T rettv; |
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|
7556 staticList10_T matchList; |
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7557 |
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|
7558 rettv.v_type = VAR_STRING; |
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|
7559 rettv.vval.v_string = NULL; |
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|
7560 argv[0].v_type = VAR_LIST; |
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7561 argv[0].vval.v_list = &matchList.sl_list; |
d76ccdacb41e
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|
7562 matchList.sl_list.lv_len = 0; |
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|
7563 if (expr->v_type == VAR_FUNC) |
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7564 { |
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|
7565 s = expr->vval.v_string; |
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|
7566 call_func(s, (int)STRLEN(s), &rettv, |
d76ccdacb41e
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|
7567 1, argv, fill_submatch_list, |
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|
7568 0L, 0L, &dummy, TRUE, NULL, NULL); |
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|
7569 } |
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|
7570 else if (expr->v_type == VAR_PARTIAL) |
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7571 { |
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|
7572 partial_T *partial = expr->vval.v_partial; |
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7573 |
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|
7574 s = partial_name(partial); |
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|
7575 call_func(s, (int)STRLEN(s), &rettv, |
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|
7576 1, argv, fill_submatch_list, |
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|
7577 0L, 0L, &dummy, TRUE, partial, NULL); |
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7578 } |
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|
7579 if (matchList.sl_list.lv_len > 0) |
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|
7580 /* fill_submatch_list() was called */ |
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|
7581 clear_submatch_list(&matchList); |
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7582 |
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|
7583 eval_result = get_tv_string_buf_chk(&rettv, buf); |
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|
7584 if (eval_result != NULL) |
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|
7585 eval_result = vim_strsave(eval_result); |
9626
172131507c85
commit https://github.com/vim/vim/commit/df48fb456fb6bf63d94cad9b302ff01d8ee8d311
Christian Brabandt <cb@256bit.org>
parents:
9589
diff
changeset
|
7586 clear_tv(&rettv); |
9589
bf204ab1ce7d
commit https://github.com/vim/vim/commit/72ab729c3dcdea0fba44d8e676602c847e841bcd
Christian Brabandt <cb@256bit.org>
parents:
9015
diff
changeset
|
7587 } |
bf204ab1ce7d
commit https://github.com/vim/vim/commit/72ab729c3dcdea0fba44d8e676602c847e841bcd
Christian Brabandt <cb@256bit.org>
parents:
9015
diff
changeset
|
7588 else |
bf204ab1ce7d
commit https://github.com/vim/vim/commit/72ab729c3dcdea0fba44d8e676602c847e841bcd
Christian Brabandt <cb@256bit.org>
parents:
9015
diff
changeset
|
7589 eval_result = eval_to_string(source + 2, NULL, TRUE); |
bf204ab1ce7d
commit https://github.com/vim/vim/commit/72ab729c3dcdea0fba44d8e676602c847e841bcd
Christian Brabandt <cb@256bit.org>
parents:
9015
diff
changeset
|
7590 |
7 | 7591 if (eval_result != NULL) |
7592 { | |
2125
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7593 int had_backslash = FALSE; |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7594 |
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
7595 for (s = eval_result; *s != NUL; MB_PTR_ADV(s)) |
7 | 7596 { |
2904 | 7597 /* Change NL to CR, so that it becomes a line break, |
7598 * unless called from vim_regexec_nl(). | |
7 | 7599 * Skip over a backslashed character. */ |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7600 if (*s == NL && !rsm.sm_line_lbr) |
7 | 7601 *s = CAR; |
7602 else if (*s == '\\' && s[1] != NUL) | |
2125
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7603 { |
7 | 7604 ++s; |
2173 | 7605 /* Change NL to CR here too, so that this works: |
7606 * :s/abc\\\ndef/\="aaa\\\nbbb"/ on text: | |
7607 * abc\ | |
7608 * def | |
2904 | 7609 * Not when called from vim_regexec_nl(). |
2173 | 7610 */ |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7611 if (*s == NL && !rsm.sm_line_lbr) |
2173 | 7612 *s = CAR; |
2125
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7613 had_backslash = TRUE; |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7614 } |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7615 } |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7616 if (had_backslash && backslash) |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7617 { |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7618 /* Backslashes will be consumed, need to double them. */ |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7619 s = vim_strsave_escaped(eval_result, (char_u *)"\\"); |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7620 if (s != NULL) |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7621 { |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7622 vim_free(eval_result); |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7623 eval_result = s; |
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7624 } |
7 | 7625 } |
7626 | |
7627 dst += STRLEN(eval_result); | |
7628 } | |
7629 | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7630 can_f_submatch = prev_can_f_submatch; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7631 if (can_f_submatch) |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7632 rsm = rsm_save; |
7 | 7633 } |
7634 #endif | |
7635 } | |
7636 else | |
7637 while ((c = *src++) != NUL) | |
7638 { | |
7639 if (c == '&' && magic) | |
7640 no = 0; | |
7641 else if (c == '\\' && *src != NUL) | |
7642 { | |
7643 if (*src == '&' && !magic) | |
7644 { | |
7645 ++src; | |
7646 no = 0; | |
7647 } | |
7648 else if ('0' <= *src && *src <= '9') | |
7649 { | |
7650 no = *src++ - '0'; | |
7651 } | |
7652 else if (vim_strchr((char_u *)"uUlLeE", *src)) | |
7653 { | |
7654 switch (*src++) | |
7655 { | |
4244 | 7656 case 'u': func_one = (fptr_T)do_upper; |
7 | 7657 continue; |
4244 | 7658 case 'U': func_all = (fptr_T)do_Upper; |
7 | 7659 continue; |
4244 | 7660 case 'l': func_one = (fptr_T)do_lower; |
7 | 7661 continue; |
4244 | 7662 case 'L': func_all = (fptr_T)do_Lower; |
7 | 7663 continue; |
7664 case 'e': | |
4244 | 7665 case 'E': func_one = func_all = (fptr_T)NULL; |
7 | 7666 continue; |
7667 } | |
7668 } | |
7669 } | |
7670 if (no < 0) /* Ordinary character. */ | |
7671 { | |
798 | 7672 if (c == K_SPECIAL && src[0] != NUL && src[1] != NUL) |
7673 { | |
1209 | 7674 /* Copy a special key as-is. */ |
798 | 7675 if (copy) |
7676 { | |
7677 *dst++ = c; | |
7678 *dst++ = *src++; | |
7679 *dst++ = *src++; | |
7680 } | |
7681 else | |
7682 { | |
7683 dst += 3; | |
7684 src += 2; | |
7685 } | |
7686 continue; | |
7687 } | |
7688 | |
7 | 7689 if (c == '\\' && *src != NUL) |
7690 { | |
7691 /* Check for abbreviations -- webb */ | |
7692 switch (*src) | |
7693 { | |
7694 case 'r': c = CAR; ++src; break; | |
7695 case 'n': c = NL; ++src; break; | |
7696 case 't': c = TAB; ++src; break; | |
7697 /* Oh no! \e already has meaning in subst pat :-( */ | |
7698 /* case 'e': c = ESC; ++src; break; */ | |
7699 case 'b': c = Ctrl_H; ++src; break; | |
7700 | |
7701 /* If "backslash" is TRUE the backslash will be removed | |
7702 * later. Used to insert a literal CR. */ | |
7703 default: if (backslash) | |
7704 { | |
7705 if (copy) | |
7706 *dst = '\\'; | |
7707 ++dst; | |
7708 } | |
7709 c = *src++; | |
7710 } | |
7711 } | |
798 | 7712 #ifdef FEAT_MBYTE |
7713 else if (has_mbyte) | |
7714 c = mb_ptr2char(src - 1); | |
7715 #endif | |
7 | 7716 |
7717 /* Write to buffer, if copy is set. */ | |
4244 | 7718 if (func_one != (fptr_T)NULL) |
7719 /* Turbo C complains without the typecast */ | |
7720 func_one = (fptr_T)(func_one(&cc, c)); | |
7721 else if (func_all != (fptr_T)NULL) | |
7722 /* Turbo C complains without the typecast */ | |
7723 func_all = (fptr_T)(func_all(&cc, c)); | |
7724 else /* just copy */ | |
772 | 7725 cc = c; |
7726 | |
7727 #ifdef FEAT_MBYTE | |
7728 if (has_mbyte) | |
7 | 7729 { |
2307
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7730 int totlen = mb_ptr2len(src - 1); |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7731 |
7 | 7732 if (copy) |
772 | 7733 mb_char2bytes(cc, dst); |
7734 dst += mb_char2len(cc) - 1; | |
2307
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7735 if (enc_utf8) |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7736 { |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7737 int clen = utf_ptr2len(src - 1); |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7738 |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7739 /* If the character length is shorter than "totlen", there |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7740 * are composing characters; copy them as-is. */ |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7741 if (clen < totlen) |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7742 { |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7743 if (copy) |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7744 mch_memmove(dst + 1, src - 1 + clen, |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7745 (size_t)(totlen - clen)); |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7746 dst += totlen - clen; |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7747 } |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7748 } |
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7749 src += totlen - 1; |
7 | 7750 } |
7751 else | |
7752 #endif | |
7753 if (copy) | |
772 | 7754 *dst = cc; |
7 | 7755 dst++; |
7756 } | |
7757 else | |
7758 { | |
7759 if (REG_MULTI) | |
7760 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7761 clnum = rex.reg_mmatch->startpos[no].lnum; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7762 if (clnum < 0 || rex.reg_mmatch->endpos[no].lnum < 0) |
7 | 7763 s = NULL; |
7764 else | |
7765 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7766 s = reg_getline(clnum) + rex.reg_mmatch->startpos[no].col; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7767 if (rex.reg_mmatch->endpos[no].lnum == clnum) |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7768 len = rex.reg_mmatch->endpos[no].col |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7769 - rex.reg_mmatch->startpos[no].col; |
7 | 7770 else |
7771 len = (int)STRLEN(s); | |
7772 } | |
7773 } | |
7774 else | |
7775 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7776 s = rex.reg_match->startp[no]; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7777 if (rex.reg_match->endp[no] == NULL) |
7 | 7778 s = NULL; |
7779 else | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7780 len = (int)(rex.reg_match->endp[no] - s); |
7 | 7781 } |
7782 if (s != NULL) | |
7783 { | |
7784 for (;;) | |
7785 { | |
7786 if (len == 0) | |
7787 { | |
7788 if (REG_MULTI) | |
7789 { | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7790 if (rex.reg_mmatch->endpos[no].lnum == clnum) |
7 | 7791 break; |
7792 if (copy) | |
7793 *dst = CAR; | |
7794 ++dst; | |
7795 s = reg_getline(++clnum); | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7796 if (rex.reg_mmatch->endpos[no].lnum == clnum) |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7797 len = rex.reg_mmatch->endpos[no].col; |
7 | 7798 else |
7799 len = (int)STRLEN(s); | |
7800 } | |
7801 else | |
7802 break; | |
7803 } | |
7804 else if (*s == NUL) /* we hit NUL. */ | |
7805 { | |
7806 if (copy) | |
7807 EMSG(_(e_re_damg)); | |
7808 goto exit; | |
7809 } | |
7810 else | |
7811 { | |
7812 if (backslash && (*s == CAR || *s == '\\')) | |
7813 { | |
7814 /* | |
7815 * Insert a backslash in front of a CR, otherwise | |
7816 * it will be replaced by a line break. | |
7817 * Number of backslashes will be halved later, | |
7818 * double them here. | |
7819 */ | |
7820 if (copy) | |
7821 { | |
7822 dst[0] = '\\'; | |
7823 dst[1] = *s; | |
7824 } | |
7825 dst += 2; | |
7826 } | |
7827 else | |
7828 { | |
772 | 7829 #ifdef FEAT_MBYTE |
7830 if (has_mbyte) | |
7831 c = mb_ptr2char(s); | |
7832 else | |
7833 #endif | |
7834 c = *s; | |
7835 | |
4244 | 7836 if (func_one != (fptr_T)NULL) |
7837 /* Turbo C complains without the typecast */ | |
7838 func_one = (fptr_T)(func_one(&cc, c)); | |
7839 else if (func_all != (fptr_T)NULL) | |
7840 /* Turbo C complains without the typecast */ | |
7841 func_all = (fptr_T)(func_all(&cc, c)); | |
7842 else /* just copy */ | |
772 | 7843 cc = c; |
7844 | |
7845 #ifdef FEAT_MBYTE | |
7846 if (has_mbyte) | |
7 | 7847 { |
1332 | 7848 int l; |
7849 | |
7850 /* Copy composing characters separately, one | |
7851 * at a time. */ | |
7852 if (enc_utf8) | |
7853 l = utf_ptr2len(s) - 1; | |
7854 else | |
7855 l = mb_ptr2len(s) - 1; | |
772 | 7856 |
7857 s += l; | |
7858 len -= l; | |
7859 if (copy) | |
7860 mb_char2bytes(cc, dst); | |
7861 dst += mb_char2len(cc) - 1; | |
7 | 7862 } |
772 | 7863 else |
7864 #endif | |
7865 if (copy) | |
7866 *dst = cc; | |
7867 dst++; | |
7 | 7868 } |
772 | 7869 |
7 | 7870 ++s; |
7871 --len; | |
7872 } | |
7873 } | |
7874 } | |
7875 no = -1; | |
7876 } | |
7877 } | |
7878 if (copy) | |
7879 *dst = NUL; | |
7880 | |
7881 exit: | |
7882 return (int)((dst - dest) + 1); | |
7883 } | |
7884 | |
7885 #ifdef FEAT_EVAL | |
7805
0b6c37dd858d
commit https://github.com/vim/vim/commit/baaa7e9ec7398a813e21285c272fa99792642077
Christian Brabandt <cb@256bit.org>
parents:
7009
diff
changeset
|
7886 static char_u *reg_getline_submatch(linenr_T lnum); |
2012 | 7887 |
7 | 7888 /* |
2011 | 7889 * Call reg_getline() with the line numbers from the submatch. If a |
7890 * substitute() was used the reg_maxline and other values have been | |
7891 * overwritten. | |
7892 */ | |
7893 static char_u * | |
7833
c079097365f3
commit https://github.com/vim/vim/commit/055409764ca5f7978d4c399d2c440af0ce971c4f
Christian Brabandt <cb@256bit.org>
parents:
7807
diff
changeset
|
7894 reg_getline_submatch(linenr_T lnum) |
2011 | 7895 { |
7896 char_u *s; | |
10245
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7897 linenr_T save_first = rex.reg_firstlnum; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7898 linenr_T save_max = rex.reg_maxline; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7899 |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7900 rex.reg_firstlnum = rsm.sm_firstlnum; |
d76ccdacb41e
commit https://github.com/vim/vim/commit/6100d02aab7c8294b581cb299250eea164b50e9d
Christian Brabandt <cb@256bit.org>
parents:
10187
diff
changeset
|
7901 rex.reg_maxline = rsm.sm_maxline; |
2011 | 7902 |
7903 s = reg_getline(lnum); | |
7904 | |
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changeset
|
7905 rex.reg_firstlnum = save_first; |
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diff
changeset
|
7906 rex.reg_maxline = save_max; |
2011 | 7907 return s; |
7908 } | |
7909 | |
7910 /* | |
1209 | 7911 * Used for the submatch() function: get the string from the n'th submatch in |
7 | 7912 * allocated memory. |
7913 * Returns NULL when not in a ":s" command and for a non-existing submatch. | |
7914 */ | |
7915 char_u * | |
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changeset
|
7916 reg_submatch(int no) |
7 | 7917 { |
7918 char_u *retval = NULL; | |
7919 char_u *s; | |
7920 int len; | |
7921 int round; | |
7922 linenr_T lnum; | |
7923 | |
840 | 7924 if (!can_f_submatch || no < 0) |
7 | 7925 return NULL; |
7926 | |
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diff
changeset
|
7927 if (rsm.sm_match == NULL) |
7 | 7928 { |
7929 /* | |
7930 * First round: compute the length and allocate memory. | |
7931 * Second round: copy the text. | |
7932 */ | |
7933 for (round = 1; round <= 2; ++round) | |
7934 { | |
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changeset
|
7935 lnum = rsm.sm_mmatch->startpos[no].lnum; |
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changeset
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7936 if (lnum < 0 || rsm.sm_mmatch->endpos[no].lnum < 0) |
7 | 7937 return NULL; |
7938 | |
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changeset
|
7939 s = reg_getline_submatch(lnum) + rsm.sm_mmatch->startpos[no].col; |
7 | 7940 if (s == NULL) /* anti-crash check, cannot happen? */ |
7941 break; | |
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changeset
|
7942 if (rsm.sm_mmatch->endpos[no].lnum == lnum) |
7 | 7943 { |
7944 /* Within one line: take form start to end col. */ | |
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changeset
|
7945 len = rsm.sm_mmatch->endpos[no].col |
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changeset
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7946 - rsm.sm_mmatch->startpos[no].col; |
7 | 7947 if (round == 2) |
418 | 7948 vim_strncpy(retval, s, len); |
7 | 7949 ++len; |
7950 } | |
7951 else | |
7952 { | |
7953 /* Multiple lines: take start line from start col, middle | |
7954 * lines completely and end line up to end col. */ | |
7955 len = (int)STRLEN(s); | |
7956 if (round == 2) | |
7957 { | |
7958 STRCPY(retval, s); | |
7959 retval[len] = '\n'; | |
7960 } | |
7961 ++len; | |
7962 ++lnum; | |
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diff
changeset
|
7963 while (lnum < rsm.sm_mmatch->endpos[no].lnum) |
7 | 7964 { |
2011 | 7965 s = reg_getline_submatch(lnum++); |
7 | 7966 if (round == 2) |
7967 STRCPY(retval + len, s); | |
7968 len += (int)STRLEN(s); | |
7969 if (round == 2) | |
7970 retval[len] = '\n'; | |
7971 ++len; | |
7972 } | |
7973 if (round == 2) | |
2011 | 7974 STRNCPY(retval + len, reg_getline_submatch(lnum), |
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changeset
|
7975 rsm.sm_mmatch->endpos[no].col); |
d76ccdacb41e
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diff
changeset
|
7976 len += rsm.sm_mmatch->endpos[no].col; |
7 | 7977 if (round == 2) |
7978 retval[len] = NUL; | |
7979 ++len; | |
7980 } | |
7981 | |
840 | 7982 if (retval == NULL) |
7 | 7983 { |
7984 retval = lalloc((long_u)len, TRUE); | |
840 | 7985 if (retval == NULL) |
7 | 7986 return NULL; |
7987 } | |
7988 } | |
7989 } | |
7990 else | |
7991 { | |
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changeset
|
7992 s = rsm.sm_match->startp[no]; |
d76ccdacb41e
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changeset
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7993 if (s == NULL || rsm.sm_match->endp[no] == NULL) |
7 | 7994 retval = NULL; |
7995 else | |
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changeset
|
7996 retval = vim_strnsave(s, (int)(rsm.sm_match->endp[no] - s)); |
7 | 7997 } |
7998 | |
7999 return retval; | |
8000 } | |
5794 | 8001 |
8002 /* | |
8003 * Used for the submatch() function with the optional non-zero argument: get | |
8004 * the list of strings from the n'th submatch in allocated memory with NULs | |
8005 * represented in NLs. | |
8006 * Returns a list of allocated strings. Returns NULL when not in a ":s" | |
8007 * command, for a non-existing submatch and for any error. | |
8008 */ | |
8009 list_T * | |
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changeset
|
8010 reg_submatch_list(int no) |
5794 | 8011 { |
8012 char_u *s; | |
8013 linenr_T slnum; | |
8014 linenr_T elnum; | |
8015 colnr_T scol; | |
8016 colnr_T ecol; | |
8017 int i; | |
8018 list_T *list; | |
8019 int error = FALSE; | |
8020 | |
8021 if (!can_f_submatch || no < 0) | |
8022 return NULL; | |
8023 | |
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changeset
|
8024 if (rsm.sm_match == NULL) |
5794 | 8025 { |
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changeset
|
8026 slnum = rsm.sm_mmatch->startpos[no].lnum; |
d76ccdacb41e
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diff
changeset
|
8027 elnum = rsm.sm_mmatch->endpos[no].lnum; |
5794 | 8028 if (slnum < 0 || elnum < 0) |
8029 return NULL; | |
8030 | |
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changeset
|
8031 scol = rsm.sm_mmatch->startpos[no].col; |
d76ccdacb41e
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changeset
|
8032 ecol = rsm.sm_mmatch->endpos[no].col; |
5794 | 8033 |
8034 list = list_alloc(); | |
8035 if (list == NULL) | |
8036 return NULL; | |
8037 | |
8038 s = reg_getline_submatch(slnum) + scol; | |
8039 if (slnum == elnum) | |
8040 { | |
8041 if (list_append_string(list, s, ecol - scol) == FAIL) | |
8042 error = TRUE; | |
8043 } | |
8044 else | |
8045 { | |
8046 if (list_append_string(list, s, -1) == FAIL) | |
8047 error = TRUE; | |
8048 for (i = 1; i < elnum - slnum; i++) | |
8049 { | |
8050 s = reg_getline_submatch(slnum + i); | |
8051 if (list_append_string(list, s, -1) == FAIL) | |
8052 error = TRUE; | |
8053 } | |
8054 s = reg_getline_submatch(elnum); | |
8055 if (list_append_string(list, s, ecol) == FAIL) | |
8056 error = TRUE; | |
8057 } | |
8058 } | |
8059 else | |
8060 { | |
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changeset
|
8061 s = rsm.sm_match->startp[no]; |
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diff
changeset
|
8062 if (s == NULL || rsm.sm_match->endp[no] == NULL) |
5794 | 8063 return NULL; |
8064 list = list_alloc(); | |
8065 if (list == NULL) | |
8066 return NULL; | |
8067 if (list_append_string(list, s, | |
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changeset
|
8068 (int)(rsm.sm_match->endp[no] - s)) == FAIL) |
5794 | 8069 error = TRUE; |
8070 } | |
8071 | |
8072 if (error) | |
8073 { | |
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diff
changeset
|
8074 list_free(list); |
5794 | 8075 return NULL; |
8076 } | |
8077 return list; | |
8078 } | |
7 | 8079 #endif |
4444 | 8080 |
8081 static regengine_T bt_regengine = | |
8082 { | |
8083 bt_regcomp, | |
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|
8084 bt_regfree, |
4444 | 8085 bt_regexec_nl, |
6328 | 8086 bt_regexec_multi, |
8087 (char_u *)"" | |
4444 | 8088 }; |
8089 | |
8090 #include "regexp_nfa.c" | |
8091 | |
8092 static regengine_T nfa_regengine = | |
8093 { | |
8094 nfa_regcomp, | |
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|
8095 nfa_regfree, |
4444 | 8096 nfa_regexec_nl, |
6328 | 8097 nfa_regexec_multi, |
8098 (char_u *)"" | |
4444 | 8099 }; |
8100 | |
8101 /* Which regexp engine to use? Needed for vim_regcomp(). | |
8102 * Must match with 'regexpengine'. */ | |
8103 static int regexp_engine = 0; | |
6328 | 8104 |
4444 | 8105 #ifdef DEBUG |
8106 static char_u regname[][30] = { | |
8107 "AUTOMATIC Regexp Engine", | |
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|
8108 "BACKTRACKING Regexp Engine", |
4444 | 8109 "NFA Regexp Engine" |
8110 }; | |
8111 #endif | |
8112 | |
8113 /* | |
8114 * Compile a regular expression into internal code. | |
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8115 * Returns the program in allocated memory. |
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8116 * Use vim_regfree() to free the memory. |
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8117 * Returns NULL for an error. |
4444 | 8118 */ |
8119 regprog_T * | |
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changeset
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8120 vim_regcomp(char_u *expr_arg, int re_flags) |
4444 | 8121 { |
8122 regprog_T *prog = NULL; | |
8123 char_u *expr = expr_arg; | |
8124 | |
8125 regexp_engine = p_re; | |
8126 | |
8127 /* Check for prefix "\%#=", that sets the regexp engine */ | |
8128 if (STRNCMP(expr, "\\%#=", 4) == 0) | |
8129 { | |
8130 int newengine = expr[4] - '0'; | |
8131 | |
8132 if (newengine == AUTOMATIC_ENGINE | |
8133 || newengine == BACKTRACKING_ENGINE | |
8134 || newengine == NFA_ENGINE) | |
8135 { | |
8136 regexp_engine = expr[4] - '0'; | |
8137 expr += 5; | |
8138 #ifdef DEBUG | |
5897 | 8139 smsg((char_u *)"New regexp mode selected (%d): %s", |
8140 regexp_engine, regname[newengine]); | |
4444 | 8141 #endif |
8142 } | |
8143 else | |
8144 { | |
8145 EMSG(_("E864: \\%#= can only be followed by 0, 1, or 2. The automatic engine will be used ")); | |
8146 regexp_engine = AUTOMATIC_ENGINE; | |
8147 } | |
8148 } | |
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changeset
|
8149 #ifdef DEBUG |
4444 | 8150 bt_regengine.expr = expr; |
8151 nfa_regengine.expr = expr; | |
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|
8152 #endif |
4444 | 8153 |
8154 /* | |
8155 * First try the NFA engine, unless backtracking was requested. | |
8156 */ | |
8157 if (regexp_engine != BACKTRACKING_ENGINE) | |
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|
8158 prog = nfa_regengine.regcomp(expr, |
6533 | 8159 re_flags + (regexp_engine == AUTOMATIC_ENGINE ? RE_AUTO : 0)); |
4444 | 8160 else |
8161 prog = bt_regengine.regcomp(expr, re_flags); | |
8162 | |
6328 | 8163 /* Check for error compiling regexp with initial engine. */ |
8164 if (prog == NULL) | |
4444 | 8165 { |
4460 | 8166 #ifdef BT_REGEXP_DEBUG_LOG |
4444 | 8167 if (regexp_engine != BACKTRACKING_ENGINE) /* debugging log for NFA */ |
8168 { | |
8169 FILE *f; | |
4460 | 8170 f = fopen(BT_REGEXP_DEBUG_LOG_NAME, "a"); |
4444 | 8171 if (f) |
8172 { | |
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|
8173 fprintf(f, "Syntax error in \"%s\"\n", expr); |
4444 | 8174 fclose(f); |
8175 } | |
8176 else | |
4460 | 8177 EMSG2("(NFA) Could not open \"%s\" to write !!!", |
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|
8178 BT_REGEXP_DEBUG_LOG_NAME); |
4444 | 8179 } |
8180 #endif | |
8181 /* | |
6328 | 8182 * If the NFA engine failed, try the backtracking engine. |
6533 | 8183 * The NFA engine also fails for patterns that it can't handle well |
8184 * but are still valid patterns, thus a retry should work. | |
8185 */ | |
4444 | 8186 if (regexp_engine == AUTOMATIC_ENGINE) |
6328 | 8187 { |
6533 | 8188 regexp_engine = BACKTRACKING_ENGINE; |
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8189 prog = bt_regengine.regcomp(expr, re_flags); |
6328 | 8190 } |
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8191 } |
4444 | 8192 |
6328 | 8193 if (prog != NULL) |
8194 { | |
8195 /* Store the info needed to call regcomp() again when the engine turns | |
8196 * out to be very slow when executing it. */ | |
8197 prog->re_engine = regexp_engine; | |
8198 prog->re_flags = re_flags; | |
8199 } | |
8200 | |
4444 | 8201 return prog; |
8202 } | |
8203 | |
8204 /* | |
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8205 * Free a compiled regexp program, returned by vim_regcomp(). |
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8206 */ |
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8207 void |
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8208 vim_regfree(regprog_T *prog) |
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8209 { |
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8210 if (prog != NULL) |
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8211 prog->engine->regfree(prog); |
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8212 } |
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8213 |
6328 | 8214 #ifdef FEAT_EVAL |
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changeset
|
8215 static void report_re_switch(char_u *pat); |
6328 | 8216 |
8217 static void | |
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changeset
|
8218 report_re_switch(char_u *pat) |
6328 | 8219 { |
8220 if (p_verbose > 0) | |
8221 { | |
8222 verbose_enter(); | |
8223 MSG_PUTS(_("Switching to backtracking RE engine for pattern: ")); | |
8224 MSG_PUTS(pat); | |
8225 verbose_leave(); | |
8226 } | |
8227 } | |
8228 #endif | |
8229 | |
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8230 /* |
4444 | 8231 * Match a regexp against a string. |
8232 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
6375 | 8233 * Note: "rmp->regprog" may be freed and changed. |
4444 | 8234 * Uses curbuf for line count and 'iskeyword'. |
6328 | 8235 * When "nl" is TRUE consider a "\n" in "line" to be a line break. |
4444 | 8236 * |
8237 * Return TRUE if there is a match, FALSE if not. | |
8238 */ | |
6328 | 8239 static int |
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|
8240 vim_regexec_string( |
7833
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changeset
|
8241 regmatch_T *rmp, |
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diff
changeset
|
8242 char_u *line, /* string to match against */ |
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diff
changeset
|
8243 colnr_T col, /* column to start looking for match */ |
c079097365f3
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
8244 int nl) |
6328 | 8245 { |
10245
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diff
changeset
|
8246 int result; |
d76ccdacb41e
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diff
changeset
|
8247 regexec_T rex_save; |
d76ccdacb41e
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diff
changeset
|
8248 int rex_in_use_save = rex_in_use; |
d76ccdacb41e
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diff
changeset
|
8249 |
14354
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changeset
|
8250 // Cannot use the same prog recursively, it contains state. |
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|
8251 if (rmp->regprog->re_in_use) |
ffd834f893aa
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|
8252 { |
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|
8253 EMSG(_(e_recursive)); |
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|
8254 return FALSE; |
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|
8255 } |
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|
8256 rmp->regprog->re_in_use = TRUE; |
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|
8257 |
10245
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|
8258 if (rex_in_use) |
14354
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|
8259 // Being called recursively, save the state. |
10245
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changeset
|
8260 rex_save = rex; |
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|
8261 rex_in_use = TRUE; |
14354
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|
8262 |
10245
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|
8263 rex.reg_startp = NULL; |
d76ccdacb41e
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|
8264 rex.reg_endp = NULL; |
d76ccdacb41e
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|
8265 rex.reg_startpos = NULL; |
d76ccdacb41e
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|
8266 rex.reg_endpos = NULL; |
d76ccdacb41e
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|
8267 |
d76ccdacb41e
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changeset
|
8268 result = rmp->regprog->engine->regexec_nl(rmp, line, col, nl); |
14358
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changeset
|
8269 rmp->regprog->re_in_use = FALSE; |
6328 | 8270 |
8271 /* NFA engine aborted because it's very slow. */ | |
8272 if (rmp->regprog->re_engine == AUTOMATIC_ENGINE | |
8273 && result == NFA_TOO_EXPENSIVE) | |
8274 { | |
8275 int save_p_re = p_re; | |
8276 int re_flags = rmp->regprog->re_flags; | |
8277 char_u *pat = vim_strsave(((nfa_regprog_T *)rmp->regprog)->pattern); | |
8278 | |
8279 p_re = BACKTRACKING_ENGINE; | |
8280 vim_regfree(rmp->regprog); | |
8281 if (pat != NULL) | |
8282 { | |
8283 #ifdef FEAT_EVAL | |
8284 report_re_switch(pat); | |
8285 #endif | |
8286 rmp->regprog = vim_regcomp(pat, re_flags); | |
8287 if (rmp->regprog != NULL) | |
14358
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|
8288 { |
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|
8289 rmp->regprog->re_in_use = TRUE; |
6328 | 8290 result = rmp->regprog->engine->regexec_nl(rmp, line, col, nl); |
14358
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|
8291 rmp->regprog->re_in_use = FALSE; |
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changeset
|
8292 } |
6328 | 8293 vim_free(pat); |
8294 } | |
8295 | |
8296 p_re = save_p_re; | |
8297 } | |
10245
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changeset
|
8298 |
d76ccdacb41e
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|
8299 rex_in_use = rex_in_use_save; |
d76ccdacb41e
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changeset
|
8300 if (rex_in_use) |
d76ccdacb41e
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changeset
|
8301 rex = rex_save; |
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changeset
|
8302 |
6390 | 8303 return result > 0; |
6328 | 8304 } |
8305 | |
6375 | 8306 /* |
8307 * Note: "*prog" may be freed and changed. | |
6390 | 8308 * Return TRUE if there is a match, FALSE if not. |
6375 | 8309 */ |
8310 int | |
7833
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changeset
|
8311 vim_regexec_prog( |
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|
8312 regprog_T **prog, |
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|
8313 int ignore_case, |
c079097365f3
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diff
changeset
|
8314 char_u *line, |
c079097365f3
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diff
changeset
|
8315 colnr_T col) |
6375 | 8316 { |
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|
8317 int r; |
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|
8318 regmatch_T regmatch; |
6375 | 8319 |
8320 regmatch.regprog = *prog; | |
8321 regmatch.rm_ic = ignore_case; | |
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|
8322 r = vim_regexec_string(®match, line, col, FALSE); |
6375 | 8323 *prog = regmatch.regprog; |
8324 return r; | |
8325 } | |
8326 | |
8327 /* | |
8328 * Note: "rmp->regprog" may be freed and changed. | |
6390 | 8329 * Return TRUE if there is a match, FALSE if not. |
6375 | 8330 */ |
4444 | 8331 int |
7833
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changeset
|
8332 vim_regexec(regmatch_T *rmp, char_u *line, colnr_T col) |
4444 | 8333 { |
11529
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|
8334 return vim_regexec_string(rmp, line, col, FALSE); |
4444 | 8335 } |
8336 | |
8337 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
8338 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
8339 /* | |
8340 * Like vim_regexec(), but consider a "\n" in "line" to be a line break. | |
6375 | 8341 * Note: "rmp->regprog" may be freed and changed. |
6390 | 8342 * Return TRUE if there is a match, FALSE if not. |
4444 | 8343 */ |
8344 int | |
7833
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changeset
|
8345 vim_regexec_nl(regmatch_T *rmp, char_u *line, colnr_T col) |
4444 | 8346 { |
11529
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|
8347 return vim_regexec_string(rmp, line, col, TRUE); |
4444 | 8348 } |
8349 #endif | |
8350 | |
8351 /* | |
8352 * Match a regexp against multiple lines. | |
14161
7cac4646c552
patch 8.1.0098: segfault when pattern with z() is very slow
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diff
changeset
|
8353 * "rmp->regprog" must be a compiled regexp as returned by vim_regcomp(). |
7cac4646c552
patch 8.1.0098: segfault when pattern with z() is very slow
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diff
changeset
|
8354 * Note: "rmp->regprog" may be freed and changed, even set to NULL. |
4444 | 8355 * Uses curbuf for line count and 'iskeyword'. |
8356 * | |
8357 * Return zero if there is no match. Return number of lines contained in the | |
8358 * match otherwise. | |
8359 */ | |
8360 long | |
7833
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diff
changeset
|
8361 vim_regexec_multi( |
c079097365f3
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diff
changeset
|
8362 regmmatch_T *rmp, |
13244
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
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12752
diff
changeset
|
8363 win_T *win, /* window in which to search or NULL */ |
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
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parents:
12752
diff
changeset
|
8364 buf_T *buf, /* buffer in which to search */ |
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
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parents:
12752
diff
changeset
|
8365 linenr_T lnum, /* nr of line to start looking for match */ |
ac42c4b11dbc
patch 8.0.1496: clearing a pointer takes two lines
Christian Brabandt <cb@256bit.org>
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12752
diff
changeset
|
8366 colnr_T col, /* column to start looking for match */ |
11521
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changeset
|
8367 proftime_T *tm, /* timeout limit or NULL */ |
578df034735d
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|
8368 int *timed_out) /* flag is set when timeout limit reached */ |
4444 | 8369 { |
10245
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changeset
|
8370 int result; |
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changeset
|
8371 regexec_T rex_save; |
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changeset
|
8372 int rex_in_use_save = rex_in_use; |
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changeset
|
8373 |
14354
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changeset
|
8374 // Cannot use the same prog recursively, it contains state. |
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|
8375 if (rmp->regprog->re_in_use) |
ffd834f893aa
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|
8376 { |
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changeset
|
8377 EMSG(_(e_recursive)); |
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|
8378 return FALSE; |
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|
8379 } |
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changeset
|
8380 rmp->regprog->re_in_use = TRUE; |
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changeset
|
8381 |
10245
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changeset
|
8382 if (rex_in_use) |
d76ccdacb41e
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changeset
|
8383 /* Being called recursively, save the state. */ |
d76ccdacb41e
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changeset
|
8384 rex_save = rex; |
d76ccdacb41e
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changeset
|
8385 rex_in_use = TRUE; |
d76ccdacb41e
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changeset
|
8386 |
11521
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changeset
|
8387 result = rmp->regprog->engine->regexec_multi( |
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changeset
|
8388 rmp, win, buf, lnum, col, tm, timed_out); |
14358
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changeset
|
8389 rmp->regprog->re_in_use = FALSE; |
6328 | 8390 |
8391 /* NFA engine aborted because it's very slow. */ | |
8392 if (rmp->regprog->re_engine == AUTOMATIC_ENGINE | |
8393 && result == NFA_TOO_EXPENSIVE) | |
8394 { | |
8395 int save_p_re = p_re; | |
8396 int re_flags = rmp->regprog->re_flags; | |
8397 char_u *pat = vim_strsave(((nfa_regprog_T *)rmp->regprog)->pattern); | |
8398 | |
8399 p_re = BACKTRACKING_ENGINE; | |
8400 vim_regfree(rmp->regprog); | |
8401 if (pat != NULL) | |
8402 { | |
8403 #ifdef FEAT_EVAL | |
8404 report_re_switch(pat); | |
8405 #endif | |
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8406 #ifdef FEAT_SYN_HL |
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8407 // checking for \z misuse was already done when compiling for NFA, |
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8408 // allow all here |
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8409 reg_do_extmatch = REX_ALL; |
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8410 #endif |
6328 | 8411 rmp->regprog = vim_regcomp(pat, re_flags); |
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8412 #ifdef FEAT_SYN_HL |
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8413 reg_do_extmatch = 0; |
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8414 #endif |
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8415 |
6328 | 8416 if (rmp->regprog != NULL) |
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8417 { |
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8418 rmp->regprog->re_in_use = TRUE; |
6328 | 8419 result = rmp->regprog->engine->regexec_multi( |
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8420 rmp, win, buf, lnum, col, tm, timed_out); |
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8421 rmp->regprog->re_in_use = FALSE; |
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8422 } |
6328 | 8423 vim_free(pat); |
8424 } | |
8425 p_re = save_p_re; | |
8426 } | |
8427 | |
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8428 rex_in_use = rex_in_use_save; |
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8429 if (rex_in_use) |
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|
8430 rex = rex_save; |
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8431 |
6390 | 8432 return result <= 0 ? 0 : result; |
4444 | 8433 } |