Mercurial > vim
annotate src/regexp.c @ 7788:192ae655ac91 v7.4.1191
commit https://github.com/vim/vim/commit/3b5f929b18492fec291d1ec95a91f54e5912c03b
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Jan 28 22:37:01 2016 +0100
patch 7.4.1191
Problem: The channel feature isn't working yet.
Solution: Add the connect(), disconnect(), sendexpr() and sendraw()
functions. Add initial documentation. Add a demo server.
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Thu, 28 Jan 2016 22:45:04 +0100 |
| parents | 286fd54c7ae3 |
| children | 0b6c37dd858d |
| rev | line source |
|---|---|
| 7 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 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 no_Magic __ARGS((int x)); | |
| 259 static int toggle_Magic __ARGS((int x)); | |
| 260 | |
| 261 static int | |
| 262 no_Magic(x) | |
| 263 int x; | |
| 264 { | |
| 265 if (is_Magic(x)) | |
| 266 return un_Magic(x); | |
| 267 return x; | |
| 268 } | |
| 269 | |
| 270 static int | |
| 271 toggle_Magic(x) | |
| 272 int x; | |
| 273 { | |
| 274 if (is_Magic(x)) | |
| 275 return un_Magic(x); | |
| 276 return Magic(x); | |
| 277 } | |
| 278 | |
| 279 /* | |
| 280 * The first byte of the regexp internal "program" is actually this magic | |
| 281 * number; the start node begins in the second byte. It's used to catch the | |
| 282 * most severe mutilation of the program by the caller. | |
| 283 */ | |
| 284 | |
| 285 #define REGMAGIC 0234 | |
| 286 | |
| 287 /* | |
| 288 * Opcode notes: | |
| 289 * | |
| 290 * BRANCH The set of branches constituting a single choice are hooked | |
| 291 * together with their "next" pointers, since precedence prevents | |
| 292 * anything being concatenated to any individual branch. The | |
| 293 * "next" pointer of the last BRANCH in a choice points to the | |
| 294 * thing following the whole choice. This is also where the | |
| 295 * final "next" pointer of each individual branch points; each | |
| 296 * branch starts with the operand node of a BRANCH node. | |
| 297 * | |
| 298 * BACK Normal "next" pointers all implicitly point forward; BACK | |
| 299 * exists to make loop structures possible. | |
| 300 * | |
| 301 * STAR,PLUS '=', and complex '*' and '+', are implemented as circular | |
| 302 * BRANCH structures using BACK. Simple cases (one character | |
| 303 * per match) are implemented with STAR and PLUS for speed | |
| 304 * and to minimize recursive plunges. | |
| 305 * | |
| 306 * BRACE_LIMITS This is always followed by a BRACE_SIMPLE or BRACE_COMPLEX | |
| 307 * node, and defines the min and max limits to be used for that | |
| 308 * node. | |
| 309 * | |
| 310 * MOPEN,MCLOSE ...are numbered at compile time. | |
| 311 * ZOPEN,ZCLOSE ...ditto | |
| 312 */ | |
| 313 | |
| 314 /* | |
| 315 * A node is one char of opcode followed by two chars of "next" pointer. | |
| 316 * "Next" pointers are stored as two 8-bit bytes, high order first. The | |
| 317 * value is a positive offset from the opcode of the node containing it. | |
| 318 * An operand, if any, simply follows the node. (Note that much of the | |
| 319 * code generation knows about this implicit relationship.) | |
| 320 * | |
| 321 * Using two bytes for the "next" pointer is vast overkill for most things, | |
| 322 * but allows patterns to get big without disasters. | |
| 323 */ | |
| 324 #define OP(p) ((int)*(p)) | |
| 325 #define NEXT(p) (((*((p) + 1) & 0377) << 8) + (*((p) + 2) & 0377)) | |
| 326 #define OPERAND(p) ((p) + 3) | |
| 327 /* Obtain an operand that was stored as four bytes, MSB first. */ | |
| 328 #define OPERAND_MIN(p) (((long)(p)[3] << 24) + ((long)(p)[4] << 16) \ | |
| 329 + ((long)(p)[5] << 8) + (long)(p)[6]) | |
| 330 /* Obtain a second operand stored as four bytes. */ | |
| 331 #define OPERAND_MAX(p) OPERAND_MIN((p) + 4) | |
| 332 /* Obtain a second single-byte operand stored after a four bytes operand. */ | |
| 333 #define OPERAND_CMP(p) (p)[7] | |
| 334 | |
| 335 /* | |
| 336 * Utility definitions. | |
| 337 */ | |
| 338 #define UCHARAT(p) ((int)*(char_u *)(p)) | |
| 339 | |
| 340 /* Used for an error (down from) vim_regcomp(): give the error message, set | |
| 341 * rc_did_emsg and return NULL */ | |
| 653 | 342 #define EMSG_RET_NULL(m) return (EMSG(m), rc_did_emsg = TRUE, (void *)NULL) |
| 308 | 343 #define EMSG_RET_FAIL(m) return (EMSG(m), rc_did_emsg = TRUE, FAIL) |
| 4444 | 344 #define EMSG2_RET_NULL(m, c) return (EMSG2((m), (c) ? "" : "\\"), rc_did_emsg = TRUE, (void *)NULL) |
| 345 #define EMSG2_RET_FAIL(m, c) return (EMSG2((m), (c) ? "" : "\\"), rc_did_emsg = TRUE, FAIL) | |
| 346 #define EMSG_ONE_RET_NULL EMSG2_RET_NULL(_("E369: invalid item in %s%%[]"), reg_magic == MAGIC_ALL) | |
| 7 | 347 |
| 348 #define MAX_LIMIT (32767L << 16L) | |
| 349 | |
| 350 static int re_multi_type __ARGS((int)); | |
| 351 static int cstrncmp __ARGS((char_u *s1, char_u *s2, int *n)); | |
| 352 static char_u *cstrchr __ARGS((char_u *, int)); | |
| 353 | |
| 4444 | 354 #ifdef BT_REGEXP_DUMP |
| 355 static void regdump __ARGS((char_u *, bt_regprog_T *)); | |
| 356 #endif | |
| 7 | 357 #ifdef DEBUG |
| 358 static char_u *regprop __ARGS((char_u *)); | |
| 359 #endif | |
| 360 | |
| 6203 | 361 static int re_mult_next __ARGS((char *what)); |
| 362 | |
| 4444 | 363 static char_u e_missingbracket[] = N_("E769: Missing ] after %s["); |
| 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 et al. 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%%[]"); |
| 7 | 373 #define NOT_MULTI 0 |
| 374 #define MULTI_ONE 1 | |
| 375 #define MULTI_MULT 2 | |
| 376 /* | |
| 377 * Return NOT_MULTI if c is not a "multi" operator. | |
| 378 * Return MULTI_ONE if c is a single "multi" operator. | |
| 379 * Return MULTI_MULT if c is a multi "multi" operator. | |
| 380 */ | |
| 381 static int | |
| 382 re_multi_type(c) | |
| 383 int c; | |
| 384 { | |
| 385 if (c == Magic('@') || c == Magic('=') || c == Magic('?')) | |
| 386 return MULTI_ONE; | |
| 387 if (c == Magic('*') || c == Magic('+') || c == Magic('{')) | |
| 388 return MULTI_MULT; | |
| 389 return NOT_MULTI; | |
| 390 } | |
| 391 | |
| 392 /* | |
| 393 * Flags to be passed up and down. | |
| 394 */ | |
| 395 #define HASWIDTH 0x1 /* Known never to match null string. */ | |
| 396 #define SIMPLE 0x2 /* Simple enough to be STAR/PLUS operand. */ | |
| 397 #define SPSTART 0x4 /* Starts with * or +. */ | |
| 398 #define HASNL 0x8 /* Contains some \n. */ | |
| 399 #define HASLOOKBH 0x10 /* Contains "\@<=" or "\@<!". */ | |
| 400 #define WORST 0 /* Worst case. */ | |
| 401 | |
| 402 /* | |
| 403 * When regcode is set to this value, code is not emitted and size is computed | |
| 404 * instead. | |
| 405 */ | |
| 406 #define JUST_CALC_SIZE ((char_u *) -1) | |
| 407 | |
| 359 | 408 static char_u *reg_prev_sub = NULL; |
| 409 | |
| 7 | 410 /* |
| 411 * REGEXP_INRANGE contains all characters which are always special in a [] | |
| 412 * range after '\'. | |
| 413 * REGEXP_ABBR contains all characters which act as abbreviations after '\'. | |
| 414 * These are: | |
| 415 * \n - New line (NL). | |
| 416 * \r - Carriage Return (CR). | |
| 417 * \t - Tab (TAB). | |
| 418 * \e - Escape (ESC). | |
| 419 * \b - Backspace (Ctrl_H). | |
| 24 | 420 * \d - Character code in decimal, eg \d123 |
| 421 * \o - Character code in octal, eg \o80 | |
| 422 * \x - Character code in hex, eg \x4a | |
| 423 * \u - Multibyte character code, eg \u20ac | |
| 424 * \U - Long multibyte character code, eg \U12345678 | |
| 7 | 425 */ |
| 426 static char_u REGEXP_INRANGE[] = "]^-n\\"; | |
| 24 | 427 static char_u REGEXP_ABBR[] = "nrtebdoxuU"; |
| 7 | 428 |
| 429 static int backslash_trans __ARGS((int c)); | |
| 167 | 430 static int get_char_class __ARGS((char_u **pp)); |
| 431 static int get_equi_class __ARGS((char_u **pp)); | |
| 432 static void reg_equi_class __ARGS((int c)); | |
| 433 static int get_coll_element __ARGS((char_u **pp)); | |
| 7 | 434 static char_u *skip_anyof __ARGS((char_u *p)); |
| 435 static void init_class_tab __ARGS((void)); | |
| 436 | |
| 437 /* | |
| 438 * Translate '\x' to its control character, except "\n", which is Magic. | |
| 439 */ | |
| 440 static int | |
| 441 backslash_trans(c) | |
| 442 int c; | |
| 443 { | |
| 444 switch (c) | |
| 445 { | |
| 446 case 'r': return CAR; | |
| 447 case 't': return TAB; | |
| 448 case 'e': return ESC; | |
| 449 case 'b': return BS; | |
| 450 } | |
| 451 return c; | |
| 452 } | |
| 453 | |
| 454 /* | |
| 167 | 455 * Check for a character class name "[:name:]". "pp" points to the '['. |
| 7 | 456 * Returns one of the CLASS_ items. CLASS_NONE means that no item was |
| 457 * recognized. Otherwise "pp" is advanced to after the item. | |
| 458 */ | |
| 459 static int | |
| 167 | 460 get_char_class(pp) |
| 7 | 461 char_u **pp; |
| 462 { | |
| 463 static const char *(class_names[]) = | |
| 464 { | |
| 465 "alnum:]", | |
| 466 #define CLASS_ALNUM 0 | |
| 467 "alpha:]", | |
| 468 #define CLASS_ALPHA 1 | |
| 469 "blank:]", | |
| 470 #define CLASS_BLANK 2 | |
| 471 "cntrl:]", | |
| 472 #define CLASS_CNTRL 3 | |
| 473 "digit:]", | |
| 474 #define CLASS_DIGIT 4 | |
| 475 "graph:]", | |
| 476 #define CLASS_GRAPH 5 | |
| 477 "lower:]", | |
| 478 #define CLASS_LOWER 6 | |
| 479 "print:]", | |
| 480 #define CLASS_PRINT 7 | |
| 481 "punct:]", | |
| 482 #define CLASS_PUNCT 8 | |
| 483 "space:]", | |
| 484 #define CLASS_SPACE 9 | |
| 485 "upper:]", | |
| 486 #define CLASS_UPPER 10 | |
| 487 "xdigit:]", | |
| 488 #define CLASS_XDIGIT 11 | |
| 489 "tab:]", | |
| 490 #define CLASS_TAB 12 | |
| 491 "return:]", | |
| 492 #define CLASS_RETURN 13 | |
| 493 "backspace:]", | |
| 494 #define CLASS_BACKSPACE 14 | |
| 495 "escape:]", | |
| 496 #define CLASS_ESCAPE 15 | |
| 497 }; | |
| 498 #define CLASS_NONE 99 | |
| 499 int i; | |
| 500 | |
| 501 if ((*pp)[1] == ':') | |
| 502 { | |
| 1877 | 503 for (i = 0; i < (int)(sizeof(class_names) / sizeof(*class_names)); ++i) |
| 7 | 504 if (STRNCMP(*pp + 2, class_names[i], STRLEN(class_names[i])) == 0) |
| 505 { | |
| 506 *pp += STRLEN(class_names[i]) + 2; | |
| 507 return i; | |
| 508 } | |
| 509 } | |
| 510 return CLASS_NONE; | |
| 511 } | |
| 512 | |
| 513 /* | |
| 514 * Specific version of character class functions. | |
| 515 * Using a table to keep this fast. | |
| 516 */ | |
| 517 static short class_tab[256]; | |
| 518 | |
| 519 #define RI_DIGIT 0x01 | |
| 520 #define RI_HEX 0x02 | |
| 521 #define RI_OCTAL 0x04 | |
| 522 #define RI_WORD 0x08 | |
| 523 #define RI_HEAD 0x10 | |
| 524 #define RI_ALPHA 0x20 | |
| 525 #define RI_LOWER 0x40 | |
| 526 #define RI_UPPER 0x80 | |
| 527 #define RI_WHITE 0x100 | |
| 528 | |
| 529 static void | |
| 530 init_class_tab() | |
| 531 { | |
| 532 int i; | |
| 533 static int done = FALSE; | |
| 534 | |
| 535 if (done) | |
| 536 return; | |
| 537 | |
| 538 for (i = 0; i < 256; ++i) | |
| 539 { | |
| 540 if (i >= '0' && i <= '7') | |
| 541 class_tab[i] = RI_DIGIT + RI_HEX + RI_OCTAL + RI_WORD; | |
| 542 else if (i >= '8' && i <= '9') | |
| 543 class_tab[i] = RI_DIGIT + RI_HEX + RI_WORD; | |
| 544 else if (i >= 'a' && i <= 'f') | |
| 545 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_LOWER; | |
| 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_LOWER; | |
| 553 else if (i >= 'A' && i <= 'F') | |
| 554 class_tab[i] = RI_HEX + RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
| 555 #ifdef EBCDIC | |
| 556 else if ((i >= 'G' && i <= 'I') || ( i >= 'J' && i <= 'R') | |
| 557 || (i >= 'S' && i <= 'Z')) | |
| 558 #else | |
| 559 else if (i >= 'G' && i <= 'Z') | |
| 560 #endif | |
| 561 class_tab[i] = RI_WORD + RI_HEAD + RI_ALPHA + RI_UPPER; | |
| 562 else if (i == '_') | |
| 563 class_tab[i] = RI_WORD + RI_HEAD; | |
| 564 else | |
| 565 class_tab[i] = 0; | |
| 566 } | |
| 567 class_tab[' '] |= RI_WHITE; | |
| 568 class_tab['\t'] |= RI_WHITE; | |
| 569 done = TRUE; | |
| 570 } | |
| 571 | |
| 572 #ifdef FEAT_MBYTE | |
| 573 # define ri_digit(c) (c < 0x100 && (class_tab[c] & RI_DIGIT)) | |
| 574 # define ri_hex(c) (c < 0x100 && (class_tab[c] & RI_HEX)) | |
| 575 # define ri_octal(c) (c < 0x100 && (class_tab[c] & RI_OCTAL)) | |
| 576 # define ri_word(c) (c < 0x100 && (class_tab[c] & RI_WORD)) | |
| 577 # define ri_head(c) (c < 0x100 && (class_tab[c] & RI_HEAD)) | |
| 578 # define ri_alpha(c) (c < 0x100 && (class_tab[c] & RI_ALPHA)) | |
| 579 # define ri_lower(c) (c < 0x100 && (class_tab[c] & RI_LOWER)) | |
| 580 # define ri_upper(c) (c < 0x100 && (class_tab[c] & RI_UPPER)) | |
| 581 # define ri_white(c) (c < 0x100 && (class_tab[c] & RI_WHITE)) | |
| 582 #else | |
| 583 # define ri_digit(c) (class_tab[c] & RI_DIGIT) | |
| 584 # define ri_hex(c) (class_tab[c] & RI_HEX) | |
| 585 # define ri_octal(c) (class_tab[c] & RI_OCTAL) | |
| 586 # define ri_word(c) (class_tab[c] & RI_WORD) | |
| 587 # define ri_head(c) (class_tab[c] & RI_HEAD) | |
| 588 # define ri_alpha(c) (class_tab[c] & RI_ALPHA) | |
| 589 # define ri_lower(c) (class_tab[c] & RI_LOWER) | |
| 590 # define ri_upper(c) (class_tab[c] & RI_UPPER) | |
| 591 # define ri_white(c) (class_tab[c] & RI_WHITE) | |
| 592 #endif | |
| 593 | |
| 594 /* flags for regflags */ | |
| 595 #define RF_ICASE 1 /* ignore case */ | |
| 596 #define RF_NOICASE 2 /* don't ignore case */ | |
| 597 #define RF_HASNL 4 /* can match a NL */ | |
| 598 #define RF_ICOMBINE 8 /* ignore combining characters */ | |
| 599 #define RF_LOOKBH 16 /* uses "\@<=" or "\@<!" */ | |
| 600 | |
| 601 /* | |
| 602 * Global work variables for vim_regcomp(). | |
| 603 */ | |
| 604 | |
| 605 static char_u *regparse; /* Input-scan pointer. */ | |
| 606 static int prevchr_len; /* byte length of previous char */ | |
| 607 static int num_complex_braces; /* Complex \{...} count */ | |
| 608 static int regnpar; /* () count. */ | |
| 609 #ifdef FEAT_SYN_HL | |
| 610 static int regnzpar; /* \z() count. */ | |
| 611 static int re_has_z; /* \z item detected */ | |
| 612 #endif | |
| 613 static char_u *regcode; /* Code-emit pointer, or JUST_CALC_SIZE */ | |
| 614 static long regsize; /* Code size. */ | |
| 2010 | 615 static int reg_toolong; /* TRUE when offset out of range */ |
| 7 | 616 static char_u had_endbrace[NSUBEXP]; /* flags, TRUE if end of () found */ |
| 617 static unsigned regflags; /* RF_ flags for prog */ | |
| 618 static long brace_min[10]; /* Minimums for complex brace repeats */ | |
| 619 static long brace_max[10]; /* Maximums for complex brace repeats */ | |
| 620 static int brace_count[10]; /* Current counts for complex brace repeats */ | |
| 621 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 622 static int had_eol; /* TRUE when EOL found by vim_regcomp() */ | |
| 623 #endif | |
| 624 static int one_exactly = FALSE; /* only do one char for EXACTLY */ | |
| 625 | |
| 626 static int reg_magic; /* magicness of the pattern: */ | |
| 627 #define MAGIC_NONE 1 /* "\V" very unmagic */ | |
| 628 #define MAGIC_OFF 2 /* "\M" or 'magic' off */ | |
| 629 #define MAGIC_ON 3 /* "\m" or 'magic' */ | |
| 630 #define MAGIC_ALL 4 /* "\v" very magic */ | |
| 631 | |
| 632 static int reg_string; /* matching with a string instead of a buffer | |
| 633 line */ | |
| 481 | 634 static int reg_strict; /* "[abc" is illegal */ |
| 7 | 635 |
| 636 /* | |
| 637 * META contains all characters that may be magic, except '^' and '$'. | |
| 638 */ | |
| 639 | |
| 640 #ifdef EBCDIC | |
| 641 static char_u META[] = "%&()*+.123456789<=>?@ACDFHIKLMOPSUVWX[_acdfhiklmnopsuvwxz{|~"; | |
| 642 #else | |
| 643 /* META[] is used often enough to justify turning it into a table. */ | |
| 644 static char_u META_flags[] = { | |
| 645 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
| 646 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
| 647 /* % & ( ) * + . */ | |
| 648 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 0, | |
| 649 /* 1 2 3 4 5 6 7 8 9 < = > ? */ | |
| 650 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, | |
| 651 /* @ A C D F H I K L M O */ | |
| 652 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, | |
| 653 /* P S U V W X Z [ _ */ | |
| 654 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, | |
| 655 /* a c d f h i k l m n o */ | |
| 656 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, | |
| 657 /* p s u v w x z { | ~ */ | |
| 658 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1 | |
| 659 }; | |
| 660 #endif | |
| 661 | |
| 4444 | 662 static int curchr; /* currently parsed character */ |
| 663 /* Previous character. Note: prevchr is sometimes -1 when we are not at the | |
| 664 * start, eg in /[ ^I]^ the pattern was never found even if it existed, | |
| 665 * because ^ was taken to be magic -- webb */ | |
| 666 static int prevchr; | |
| 667 static int prevprevchr; /* previous-previous character */ | |
| 668 static int nextchr; /* used for ungetchr() */ | |
| 7 | 669 |
| 670 /* arguments for reg() */ | |
| 671 #define REG_NOPAREN 0 /* toplevel reg() */ | |
| 672 #define REG_PAREN 1 /* \(\) */ | |
| 673 #define REG_ZPAREN 2 /* \z(\) */ | |
| 674 #define REG_NPAREN 3 /* \%(\) */ | |
| 675 | |
|
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676 typedef struct |
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677 { |
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678 char_u *regparse; |
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679 int prevchr_len; |
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680 int curchr; |
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681 int prevchr; |
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682 int prevprevchr; |
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683 int nextchr; |
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684 int at_start; |
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685 int prev_at_start; |
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686 int regnpar; |
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687 } parse_state_T; |
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688 |
| 7 | 689 /* |
| 690 * Forward declarations for vim_regcomp()'s friends. | |
| 691 */ | |
| 692 static void initchr __ARGS((char_u *)); | |
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693 static void save_parse_state __ARGS((parse_state_T *ps)); |
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694 static void restore_parse_state __ARGS((parse_state_T *ps)); |
| 7 | 695 static int getchr __ARGS((void)); |
| 696 static void skipchr_keepstart __ARGS((void)); | |
| 697 static int peekchr __ARGS((void)); | |
| 698 static void skipchr __ARGS((void)); | |
| 699 static void ungetchr __ARGS((void)); | |
| 24 | 700 static int gethexchrs __ARGS((int maxinputlen)); |
| 701 static int getoctchrs __ARGS((void)); | |
| 702 static int getdecchrs __ARGS((void)); | |
| 703 static int coll_get_char __ARGS((void)); | |
| 7 | 704 static void regcomp_start __ARGS((char_u *expr, int flags)); |
| 705 static char_u *reg __ARGS((int, int *)); | |
| 706 static char_u *regbranch __ARGS((int *flagp)); | |
| 707 static char_u *regconcat __ARGS((int *flagp)); | |
| 708 static char_u *regpiece __ARGS((int *)); | |
| 709 static char_u *regatom __ARGS((int *)); | |
| 710 static char_u *regnode __ARGS((int)); | |
| 714 | 711 #ifdef FEAT_MBYTE |
| 712 static int use_multibytecode __ARGS((int c)); | |
| 713 #endif | |
| 7 | 714 static int prog_magic_wrong __ARGS((void)); |
| 715 static char_u *regnext __ARGS((char_u *)); | |
| 716 static void regc __ARGS((int b)); | |
| 717 #ifdef FEAT_MBYTE | |
| 718 static void regmbc __ARGS((int c)); | |
| 2974 | 719 # define REGMBC(x) regmbc(x); |
| 720 # define CASEMBC(x) case x: | |
| 167 | 721 #else |
| 722 # define regmbc(c) regc(c) | |
| 2974 | 723 # define REGMBC(x) |
| 724 # define CASEMBC(x) | |
| 7 | 725 #endif |
| 726 static void reginsert __ARGS((int, char_u *)); | |
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727 static void reginsert_nr __ARGS((int op, long val, char_u *opnd)); |
| 7 | 728 static void reginsert_limits __ARGS((int, long, long, char_u *)); |
| 729 static char_u *re_put_long __ARGS((char_u *pr, long_u val)); | |
| 730 static int read_limits __ARGS((long *, long *)); | |
| 731 static void regtail __ARGS((char_u *, char_u *)); | |
| 732 static void regoptail __ARGS((char_u *, char_u *)); | |
| 733 | |
| 4444 | 734 static regengine_T bt_regengine; |
| 735 static regengine_T nfa_regengine; | |
| 736 | |
| 7 | 737 /* |
| 738 * Return TRUE if compiled regular expression "prog" can match a line break. | |
| 739 */ | |
| 740 int | |
| 741 re_multiline(prog) | |
| 742 regprog_T *prog; | |
| 743 { | |
| 744 return (prog->regflags & RF_HASNL); | |
| 745 } | |
| 746 | |
| 747 /* | |
| 748 * Return TRUE if compiled regular expression "prog" looks before the start | |
| 749 * position (pattern contains "\@<=" or "\@<!"). | |
| 750 */ | |
| 751 int | |
| 752 re_lookbehind(prog) | |
| 753 regprog_T *prog; | |
| 754 { | |
| 755 return (prog->regflags & RF_LOOKBH); | |
| 756 } | |
| 757 | |
| 758 /* | |
| 167 | 759 * Check for an equivalence class name "[=a=]". "pp" points to the '['. |
| 760 * Returns a character representing the class. Zero means that no item was | |
| 761 * recognized. Otherwise "pp" is advanced to after the item. | |
| 762 */ | |
| 763 static int | |
| 764 get_equi_class(pp) | |
| 765 char_u **pp; | |
| 766 { | |
| 767 int c; | |
| 768 int l = 1; | |
| 769 char_u *p = *pp; | |
| 770 | |
| 771 if (p[1] == '=') | |
| 772 { | |
| 773 #ifdef FEAT_MBYTE | |
| 774 if (has_mbyte) | |
| 474 | 775 l = (*mb_ptr2len)(p + 2); |
| 167 | 776 #endif |
| 777 if (p[l + 2] == '=' && p[l + 3] == ']') | |
| 778 { | |
| 779 #ifdef FEAT_MBYTE | |
| 780 if (has_mbyte) | |
| 781 c = mb_ptr2char(p + 2); | |
| 782 else | |
| 783 #endif | |
| 784 c = p[2]; | |
| 785 *pp += l + 4; | |
| 786 return c; | |
| 787 } | |
| 788 } | |
| 789 return 0; | |
| 790 } | |
| 791 | |
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792 #ifdef EBCDIC |
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793 /* |
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794 * Table for equivalence class "c". (IBM-1047) |
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795 */ |
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796 char *EQUIVAL_CLASS_C[16] = { |
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797 "A\x62\x63\x64\x65\x66\x67", |
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798 "C\x68", |
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799 "E\x71\x72\x73\x74", |
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800 "I\x75\x76\x77\x78", |
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801 "N\x69", |
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802 "O\xEB\xEC\xED\xEE\xEF", |
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803 "U\xFB\xFC\xFD\xFE", |
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804 "Y\xBA", |
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805 "a\x42\x43\x44\x45\x46\x47", |
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806 "c\x48", |
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807 "e\x51\x52\x53\x54", |
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808 "i\x55\x56\x57\x58", |
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809 "n\x49", |
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810 "o\xCB\xCC\xCD\xCE\xCF", |
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811 "u\xDB\xDC\xDD\xDE", |
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812 "y\x8D\xDF", |
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813 }; |
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814 #endif |
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815 |
| 167 | 816 /* |
| 817 * Produce the bytes for equivalence class "c". | |
| 818 * Currently only handles latin1, latin9 and utf-8. | |
| 4444 | 819 * NOTE: When changing this function, also change nfa_emit_equi_class() |
| 167 | 820 */ |
| 821 static void | |
| 822 reg_equi_class(c) | |
| 823 int c; | |
| 824 { | |
| 825 #ifdef FEAT_MBYTE | |
| 826 if (enc_utf8 || STRCMP(p_enc, "latin1") == 0 | |
| 492 | 827 || STRCMP(p_enc, "iso-8859-15") == 0) |
| 167 | 828 #endif |
| 829 { | |
|
2247
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830 #ifdef EBCDIC |
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831 int i; |
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832 |
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833 /* This might be slower than switch/case below. */ |
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834 for (i = 0; i < 16; i++) |
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835 { |
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836 if (vim_strchr(EQUIVAL_CLASS_C[i], c) != NULL) |
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837 { |
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838 char *p = EQUIVAL_CLASS_C[i]; |
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839 |
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840 while (*p != 0) |
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841 regmbc(*p++); |
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842 return; |
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843 } |
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844 } |
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|
845 #else |
| 167 | 846 switch (c) |
| 847 { | |
| 6765 | 848 /* Do not use '\300' style, it results in a negative number. */ |
| 849 case 'A': case 0xc0: case 0xc1: case 0xc2: | |
| 850 case 0xc3: case 0xc4: case 0xc5: | |
| 2974 | 851 CASEMBC(0x100) CASEMBC(0x102) CASEMBC(0x104) CASEMBC(0x1cd) |
| 852 CASEMBC(0x1de) CASEMBC(0x1e0) CASEMBC(0x1ea2) | |
| 6765 | 853 regmbc('A'); regmbc(0xc0); regmbc(0xc1); |
| 854 regmbc(0xc2); regmbc(0xc3); regmbc(0xc4); | |
| 855 regmbc(0xc5); | |
| 2974 | 856 REGMBC(0x100) REGMBC(0x102) REGMBC(0x104) |
| 857 REGMBC(0x1cd) REGMBC(0x1de) REGMBC(0x1e0) | |
| 858 REGMBC(0x1ea2) | |
| 859 return; | |
| 860 case 'B': CASEMBC(0x1e02) CASEMBC(0x1e06) | |
| 861 regmbc('B'); REGMBC(0x1e02) REGMBC(0x1e06) | |
| 167 | 862 return; |
| 6765 | 863 case 'C': case 0xc7: |
| 2974 | 864 CASEMBC(0x106) CASEMBC(0x108) CASEMBC(0x10a) CASEMBC(0x10c) |
| 6765 | 865 regmbc('C'); regmbc(0xc7); |
| 2974 | 866 REGMBC(0x106) REGMBC(0x108) REGMBC(0x10a) |
| 867 REGMBC(0x10c) | |
| 868 return; | |
| 869 case 'D': CASEMBC(0x10e) CASEMBC(0x110) CASEMBC(0x1e0a) | |
| 870 CASEMBC(0x1e0e) CASEMBC(0x1e10) | |
| 871 regmbc('D'); REGMBC(0x10e) REGMBC(0x110) | |
| 872 REGMBC(0x1e0a) REGMBC(0x1e0e) REGMBC(0x1e10) | |
| 167 | 873 return; |
| 6765 | 874 case 'E': case 0xc8: case 0xc9: case 0xca: case 0xcb: |
| 2974 | 875 CASEMBC(0x112) CASEMBC(0x114) CASEMBC(0x116) CASEMBC(0x118) |
| 876 CASEMBC(0x11a) CASEMBC(0x1eba) CASEMBC(0x1ebc) | |
| 6765 | 877 regmbc('E'); regmbc(0xc8); regmbc(0xc9); |
| 878 regmbc(0xca); regmbc(0xcb); | |
| 2974 | 879 REGMBC(0x112) REGMBC(0x114) REGMBC(0x116) |
| 880 REGMBC(0x118) REGMBC(0x11a) REGMBC(0x1eba) | |
| 881 REGMBC(0x1ebc) | |
| 882 return; | |
| 883 case 'F': CASEMBC(0x1e1e) | |
| 884 regmbc('F'); REGMBC(0x1e1e) | |
| 885 return; | |
| 886 case 'G': CASEMBC(0x11c) CASEMBC(0x11e) CASEMBC(0x120) | |
| 887 CASEMBC(0x122) CASEMBC(0x1e4) CASEMBC(0x1e6) CASEMBC(0x1f4) | |
| 888 CASEMBC(0x1e20) | |
| 889 regmbc('G'); REGMBC(0x11c) REGMBC(0x11e) | |
| 890 REGMBC(0x120) REGMBC(0x122) REGMBC(0x1e4) | |
| 891 REGMBC(0x1e6) REGMBC(0x1f4) REGMBC(0x1e20) | |
| 892 return; | |
| 893 case 'H': CASEMBC(0x124) CASEMBC(0x126) CASEMBC(0x1e22) | |
| 894 CASEMBC(0x1e26) CASEMBC(0x1e28) | |
| 895 regmbc('H'); REGMBC(0x124) REGMBC(0x126) | |
| 896 REGMBC(0x1e22) REGMBC(0x1e26) REGMBC(0x1e28) | |
| 167 | 897 return; |
| 6765 | 898 case 'I': case 0xcc: case 0xcd: case 0xce: case 0xcf: |
| 2974 | 899 CASEMBC(0x128) CASEMBC(0x12a) CASEMBC(0x12c) CASEMBC(0x12e) |
| 900 CASEMBC(0x130) CASEMBC(0x1cf) CASEMBC(0x1ec8) | |
| 6765 | 901 regmbc('I'); regmbc(0xcc); regmbc(0xcd); |
| 902 regmbc(0xce); regmbc(0xcf); | |
| 2974 | 903 REGMBC(0x128) REGMBC(0x12a) REGMBC(0x12c) |
| 904 REGMBC(0x12e) REGMBC(0x130) REGMBC(0x1cf) | |
| 905 REGMBC(0x1ec8) | |
| 906 return; | |
| 907 case 'J': CASEMBC(0x134) | |
| 908 regmbc('J'); REGMBC(0x134) | |
| 909 return; | |
| 910 case 'K': CASEMBC(0x136) CASEMBC(0x1e8) CASEMBC(0x1e30) | |
| 911 CASEMBC(0x1e34) | |
| 912 regmbc('K'); REGMBC(0x136) REGMBC(0x1e8) | |
| 913 REGMBC(0x1e30) REGMBC(0x1e34) | |
| 914 return; | |
| 915 case 'L': CASEMBC(0x139) CASEMBC(0x13b) CASEMBC(0x13d) | |
| 916 CASEMBC(0x13f) CASEMBC(0x141) CASEMBC(0x1e3a) | |
| 917 regmbc('L'); REGMBC(0x139) REGMBC(0x13b) | |
| 918 REGMBC(0x13d) REGMBC(0x13f) REGMBC(0x141) | |
| 919 REGMBC(0x1e3a) | |
| 920 return; | |
| 921 case 'M': CASEMBC(0x1e3e) CASEMBC(0x1e40) | |
| 922 regmbc('M'); REGMBC(0x1e3e) REGMBC(0x1e40) | |
| 167 | 923 return; |
| 6765 | 924 case 'N': case 0xd1: |
| 2974 | 925 CASEMBC(0x143) CASEMBC(0x145) CASEMBC(0x147) CASEMBC(0x1e44) |
| 926 CASEMBC(0x1e48) | |
| 6765 | 927 regmbc('N'); regmbc(0xd1); |
| 2974 | 928 REGMBC(0x143) REGMBC(0x145) REGMBC(0x147) |
| 929 REGMBC(0x1e44) REGMBC(0x1e48) | |
| 167 | 930 return; |
| 6765 | 931 case 'O': case 0xd2: case 0xd3: case 0xd4: case 0xd5: |
| 932 case 0xd6: case 0xd8: | |
| 2974 | 933 CASEMBC(0x14c) CASEMBC(0x14e) CASEMBC(0x150) CASEMBC(0x1a0) |
| 934 CASEMBC(0x1d1) CASEMBC(0x1ea) CASEMBC(0x1ec) CASEMBC(0x1ece) | |
| 6765 | 935 regmbc('O'); regmbc(0xd2); regmbc(0xd3); |
| 936 regmbc(0xd4); regmbc(0xd5); regmbc(0xd6); | |
| 937 regmbc(0xd8); | |
| 2974 | 938 REGMBC(0x14c) REGMBC(0x14e) REGMBC(0x150) |
| 939 REGMBC(0x1a0) REGMBC(0x1d1) REGMBC(0x1ea) | |
| 940 REGMBC(0x1ec) REGMBC(0x1ece) | |
| 941 return; | |
| 942 case 'P': case 0x1e54: case 0x1e56: | |
| 943 regmbc('P'); REGMBC(0x1e54) REGMBC(0x1e56) | |
| 944 return; | |
| 945 case 'R': CASEMBC(0x154) CASEMBC(0x156) CASEMBC(0x158) | |
| 946 CASEMBC(0x1e58) CASEMBC(0x1e5e) | |
| 947 regmbc('R'); REGMBC(0x154) REGMBC(0x156) REGMBC(0x158) | |
| 948 REGMBC(0x1e58) REGMBC(0x1e5e) | |
| 949 return; | |
| 950 case 'S': CASEMBC(0x15a) CASEMBC(0x15c) CASEMBC(0x15e) | |
| 951 CASEMBC(0x160) CASEMBC(0x1e60) | |
| 952 regmbc('S'); REGMBC(0x15a) REGMBC(0x15c) | |
| 953 REGMBC(0x15e) REGMBC(0x160) REGMBC(0x1e60) | |
| 954 return; | |
| 955 case 'T': CASEMBC(0x162) CASEMBC(0x164) CASEMBC(0x166) | |
| 956 CASEMBC(0x1e6a) CASEMBC(0x1e6e) | |
| 957 regmbc('T'); REGMBC(0x162) REGMBC(0x164) | |
| 958 REGMBC(0x166) REGMBC(0x1e6a) REGMBC(0x1e6e) | |
| 167 | 959 return; |
| 6765 | 960 case 'U': case 0xd9: case 0xda: case 0xdb: case 0xdc: |
| 2974 | 961 CASEMBC(0x168) CASEMBC(0x16a) CASEMBC(0x16c) CASEMBC(0x16e) |
| 962 CASEMBC(0x170) CASEMBC(0x172) CASEMBC(0x1af) CASEMBC(0x1d3) | |
| 963 CASEMBC(0x1ee6) | |
| 6765 | 964 regmbc('U'); regmbc(0xd9); regmbc(0xda); |
| 965 regmbc(0xdb); regmbc(0xdc); | |
| 2974 | 966 REGMBC(0x168) REGMBC(0x16a) REGMBC(0x16c) |
| 967 REGMBC(0x16e) REGMBC(0x170) REGMBC(0x172) | |
| 968 REGMBC(0x1af) REGMBC(0x1d3) REGMBC(0x1ee6) | |
| 969 return; | |
| 970 case 'V': CASEMBC(0x1e7c) | |
| 971 regmbc('V'); REGMBC(0x1e7c) | |
| 972 return; | |
| 973 case 'W': CASEMBC(0x174) CASEMBC(0x1e80) CASEMBC(0x1e82) | |
| 974 CASEMBC(0x1e84) CASEMBC(0x1e86) | |
| 975 regmbc('W'); REGMBC(0x174) REGMBC(0x1e80) | |
| 976 REGMBC(0x1e82) REGMBC(0x1e84) REGMBC(0x1e86) | |
| 977 return; | |
| 978 case 'X': CASEMBC(0x1e8a) CASEMBC(0x1e8c) | |
| 979 regmbc('X'); REGMBC(0x1e8a) REGMBC(0x1e8c) | |
| 167 | 980 return; |
| 6765 | 981 case 'Y': case 0xdd: |
| 2974 | 982 CASEMBC(0x176) CASEMBC(0x178) CASEMBC(0x1e8e) CASEMBC(0x1ef2) |
| 983 CASEMBC(0x1ef6) CASEMBC(0x1ef8) | |
| 6765 | 984 regmbc('Y'); regmbc(0xdd); |
| 2974 | 985 REGMBC(0x176) REGMBC(0x178) REGMBC(0x1e8e) |
| 986 REGMBC(0x1ef2) REGMBC(0x1ef6) REGMBC(0x1ef8) | |
| 987 return; | |
| 988 case 'Z': CASEMBC(0x179) CASEMBC(0x17b) CASEMBC(0x17d) | |
| 989 CASEMBC(0x1b5) CASEMBC(0x1e90) CASEMBC(0x1e94) | |
| 990 regmbc('Z'); REGMBC(0x179) REGMBC(0x17b) | |
| 991 REGMBC(0x17d) REGMBC(0x1b5) REGMBC(0x1e90) | |
| 992 REGMBC(0x1e94) | |
| 167 | 993 return; |
| 6765 | 994 case 'a': case 0xe0: case 0xe1: case 0xe2: |
| 995 case 0xe3: case 0xe4: case 0xe5: | |
| 2974 | 996 CASEMBC(0x101) CASEMBC(0x103) CASEMBC(0x105) CASEMBC(0x1ce) |
| 997 CASEMBC(0x1df) CASEMBC(0x1e1) CASEMBC(0x1ea3) | |
| 6765 | 998 regmbc('a'); regmbc(0xe0); regmbc(0xe1); |
| 999 regmbc(0xe2); regmbc(0xe3); regmbc(0xe4); | |
| 1000 regmbc(0xe5); | |
| 2974 | 1001 REGMBC(0x101) REGMBC(0x103) REGMBC(0x105) |
| 1002 REGMBC(0x1ce) REGMBC(0x1df) REGMBC(0x1e1) | |
| 1003 REGMBC(0x1ea3) | |
| 1004 return; | |
| 1005 case 'b': CASEMBC(0x1e03) CASEMBC(0x1e07) | |
| 1006 regmbc('b'); REGMBC(0x1e03) REGMBC(0x1e07) | |
| 167 | 1007 return; |
| 6765 | 1008 case 'c': case 0xe7: |
| 2974 | 1009 CASEMBC(0x107) CASEMBC(0x109) CASEMBC(0x10b) CASEMBC(0x10d) |
| 6765 | 1010 regmbc('c'); regmbc(0xe7); |
| 2974 | 1011 REGMBC(0x107) REGMBC(0x109) REGMBC(0x10b) |
| 1012 REGMBC(0x10d) | |
| 1013 return; | |
| 6914 | 1014 case 'd': CASEMBC(0x10f) CASEMBC(0x111) CASEMBC(0x1e0b) |
| 1015 CASEMBC(0x1e0f) CASEMBC(0x1e11) | |
| 2974 | 1016 regmbc('d'); REGMBC(0x10f) REGMBC(0x111) |
| 6914 | 1017 REGMBC(0x1e0b) REGMBC(0x1e0f) REGMBC(0x1e11) |
| 167 | 1018 return; |
| 6765 | 1019 case 'e': case 0xe8: case 0xe9: case 0xea: case 0xeb: |
| 2974 | 1020 CASEMBC(0x113) CASEMBC(0x115) CASEMBC(0x117) CASEMBC(0x119) |
| 1021 CASEMBC(0x11b) CASEMBC(0x1ebb) CASEMBC(0x1ebd) | |
| 6765 | 1022 regmbc('e'); regmbc(0xe8); regmbc(0xe9); |
| 1023 regmbc(0xea); regmbc(0xeb); | |
| 2974 | 1024 REGMBC(0x113) REGMBC(0x115) REGMBC(0x117) |
| 1025 REGMBC(0x119) REGMBC(0x11b) REGMBC(0x1ebb) | |
| 1026 REGMBC(0x1ebd) | |
| 1027 return; | |
| 1028 case 'f': CASEMBC(0x1e1f) | |
| 1029 regmbc('f'); REGMBC(0x1e1f) | |
| 1030 return; | |
| 1031 case 'g': CASEMBC(0x11d) CASEMBC(0x11f) CASEMBC(0x121) | |
| 1032 CASEMBC(0x123) CASEMBC(0x1e5) CASEMBC(0x1e7) CASEMBC(0x1f5) | |
| 1033 CASEMBC(0x1e21) | |
| 1034 regmbc('g'); REGMBC(0x11d) REGMBC(0x11f) | |
| 1035 REGMBC(0x121) REGMBC(0x123) REGMBC(0x1e5) | |
| 1036 REGMBC(0x1e7) REGMBC(0x1f5) REGMBC(0x1e21) | |
| 1037 return; | |
| 1038 case 'h': CASEMBC(0x125) CASEMBC(0x127) CASEMBC(0x1e23) | |
| 1039 CASEMBC(0x1e27) CASEMBC(0x1e29) CASEMBC(0x1e96) | |
| 1040 regmbc('h'); REGMBC(0x125) REGMBC(0x127) | |
| 1041 REGMBC(0x1e23) REGMBC(0x1e27) REGMBC(0x1e29) | |
| 1042 REGMBC(0x1e96) | |
| 167 | 1043 return; |
| 6765 | 1044 case 'i': case 0xec: case 0xed: case 0xee: case 0xef: |
| 2974 | 1045 CASEMBC(0x129) CASEMBC(0x12b) CASEMBC(0x12d) CASEMBC(0x12f) |
| 1046 CASEMBC(0x1d0) CASEMBC(0x1ec9) | |
| 6765 | 1047 regmbc('i'); regmbc(0xec); regmbc(0xed); |
| 1048 regmbc(0xee); regmbc(0xef); | |
| 2974 | 1049 REGMBC(0x129) REGMBC(0x12b) REGMBC(0x12d) |
| 1050 REGMBC(0x12f) REGMBC(0x1d0) REGMBC(0x1ec9) | |
| 1051 return; | |
| 1052 case 'j': CASEMBC(0x135) CASEMBC(0x1f0) | |
| 1053 regmbc('j'); REGMBC(0x135) REGMBC(0x1f0) | |
| 1054 return; | |
| 1055 case 'k': CASEMBC(0x137) CASEMBC(0x1e9) CASEMBC(0x1e31) | |
| 1056 CASEMBC(0x1e35) | |
| 1057 regmbc('k'); REGMBC(0x137) REGMBC(0x1e9) | |
| 1058 REGMBC(0x1e31) REGMBC(0x1e35) | |
| 1059 return; | |
| 1060 case 'l': CASEMBC(0x13a) CASEMBC(0x13c) CASEMBC(0x13e) | |
| 1061 CASEMBC(0x140) CASEMBC(0x142) CASEMBC(0x1e3b) | |
| 1062 regmbc('l'); REGMBC(0x13a) REGMBC(0x13c) | |
| 1063 REGMBC(0x13e) REGMBC(0x140) REGMBC(0x142) | |
| 1064 REGMBC(0x1e3b) | |
| 1065 return; | |
| 1066 case 'm': CASEMBC(0x1e3f) CASEMBC(0x1e41) | |
| 1067 regmbc('m'); REGMBC(0x1e3f) REGMBC(0x1e41) | |
| 167 | 1068 return; |
| 6765 | 1069 case 'n': case 0xf1: |
| 2974 | 1070 CASEMBC(0x144) CASEMBC(0x146) CASEMBC(0x148) CASEMBC(0x149) |
| 1071 CASEMBC(0x1e45) CASEMBC(0x1e49) | |
| 6765 | 1072 regmbc('n'); regmbc(0xf1); |
| 2974 | 1073 REGMBC(0x144) REGMBC(0x146) REGMBC(0x148) |
| 1074 REGMBC(0x149) REGMBC(0x1e45) REGMBC(0x1e49) | |
| 167 | 1075 return; |
| 6765 | 1076 case 'o': case 0xf2: case 0xf3: case 0xf4: case 0xf5: |
| 1077 case 0xf6: case 0xf8: | |
| 2974 | 1078 CASEMBC(0x14d) CASEMBC(0x14f) CASEMBC(0x151) CASEMBC(0x1a1) |
| 1079 CASEMBC(0x1d2) CASEMBC(0x1eb) CASEMBC(0x1ed) CASEMBC(0x1ecf) | |
| 6765 | 1080 regmbc('o'); regmbc(0xf2); regmbc(0xf3); |
| 1081 regmbc(0xf4); regmbc(0xf5); regmbc(0xf6); | |
| 1082 regmbc(0xf8); | |
| 2974 | 1083 REGMBC(0x14d) REGMBC(0x14f) REGMBC(0x151) |
| 1084 REGMBC(0x1a1) REGMBC(0x1d2) REGMBC(0x1eb) | |
| 1085 REGMBC(0x1ed) REGMBC(0x1ecf) | |
| 1086 return; | |
| 1087 case 'p': CASEMBC(0x1e55) CASEMBC(0x1e57) | |
| 1088 regmbc('p'); REGMBC(0x1e55) REGMBC(0x1e57) | |
| 1089 return; | |
| 1090 case 'r': CASEMBC(0x155) CASEMBC(0x157) CASEMBC(0x159) | |
| 1091 CASEMBC(0x1e59) CASEMBC(0x1e5f) | |
| 1092 regmbc('r'); REGMBC(0x155) REGMBC(0x157) REGMBC(0x159) | |
| 1093 REGMBC(0x1e59) REGMBC(0x1e5f) | |
| 1094 return; | |
| 1095 case 's': CASEMBC(0x15b) CASEMBC(0x15d) CASEMBC(0x15f) | |
| 1096 CASEMBC(0x161) CASEMBC(0x1e61) | |
| 1097 regmbc('s'); REGMBC(0x15b) REGMBC(0x15d) | |
| 1098 REGMBC(0x15f) REGMBC(0x161) REGMBC(0x1e61) | |
| 1099 return; | |
| 1100 case 't': CASEMBC(0x163) CASEMBC(0x165) CASEMBC(0x167) | |
| 1101 CASEMBC(0x1e6b) CASEMBC(0x1e6f) CASEMBC(0x1e97) | |
| 1102 regmbc('t'); REGMBC(0x163) REGMBC(0x165) REGMBC(0x167) | |
| 1103 REGMBC(0x1e6b) REGMBC(0x1e6f) REGMBC(0x1e97) | |
| 167 | 1104 return; |
| 6765 | 1105 case 'u': case 0xf9: case 0xfa: case 0xfb: case 0xfc: |
| 2974 | 1106 CASEMBC(0x169) CASEMBC(0x16b) CASEMBC(0x16d) CASEMBC(0x16f) |
| 1107 CASEMBC(0x171) CASEMBC(0x173) CASEMBC(0x1b0) CASEMBC(0x1d4) | |
| 1108 CASEMBC(0x1ee7) | |
| 6765 | 1109 regmbc('u'); regmbc(0xf9); regmbc(0xfa); |
| 1110 regmbc(0xfb); regmbc(0xfc); | |
| 2974 | 1111 REGMBC(0x169) REGMBC(0x16b) REGMBC(0x16d) |
| 1112 REGMBC(0x16f) REGMBC(0x171) REGMBC(0x173) | |
| 1113 REGMBC(0x1b0) REGMBC(0x1d4) REGMBC(0x1ee7) | |
| 1114 return; | |
| 1115 case 'v': CASEMBC(0x1e7d) | |
| 1116 regmbc('v'); REGMBC(0x1e7d) | |
| 1117 return; | |
| 1118 case 'w': CASEMBC(0x175) CASEMBC(0x1e81) CASEMBC(0x1e83) | |
| 1119 CASEMBC(0x1e85) CASEMBC(0x1e87) CASEMBC(0x1e98) | |
| 1120 regmbc('w'); REGMBC(0x175) REGMBC(0x1e81) | |
| 1121 REGMBC(0x1e83) REGMBC(0x1e85) REGMBC(0x1e87) | |
| 1122 REGMBC(0x1e98) | |
| 1123 return; | |
| 1124 case 'x': CASEMBC(0x1e8b) CASEMBC(0x1e8d) | |
| 1125 regmbc('x'); REGMBC(0x1e8b) REGMBC(0x1e8d) | |
| 167 | 1126 return; |
| 6765 | 1127 case 'y': case 0xfd: case 0xff: |
| 2974 | 1128 CASEMBC(0x177) CASEMBC(0x1e8f) CASEMBC(0x1e99) |
| 1129 CASEMBC(0x1ef3) CASEMBC(0x1ef7) CASEMBC(0x1ef9) | |
| 6765 | 1130 regmbc('y'); regmbc(0xfd); regmbc(0xff); |
| 2974 | 1131 REGMBC(0x177) REGMBC(0x1e8f) REGMBC(0x1e99) |
| 1132 REGMBC(0x1ef3) REGMBC(0x1ef7) REGMBC(0x1ef9) | |
| 1133 return; | |
| 1134 case 'z': CASEMBC(0x17a) CASEMBC(0x17c) CASEMBC(0x17e) | |
| 1135 CASEMBC(0x1b6) CASEMBC(0x1e91) CASEMBC(0x1e95) | |
| 1136 regmbc('z'); REGMBC(0x17a) REGMBC(0x17c) | |
| 1137 REGMBC(0x17e) REGMBC(0x1b6) REGMBC(0x1e91) | |
| 1138 REGMBC(0x1e95) | |
| 167 | 1139 return; |
| 1140 } | |
|
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1141 #endif |
| 167 | 1142 } |
| 1143 regmbc(c); | |
| 1144 } | |
| 1145 | |
| 1146 /* | |
| 1147 * Check for a collating element "[.a.]". "pp" points to the '['. | |
| 1148 * Returns a character. Zero means that no item was recognized. Otherwise | |
| 1149 * "pp" is advanced to after the item. | |
| 1150 * Currently only single characters are recognized! | |
| 1151 */ | |
| 1152 static int | |
| 1153 get_coll_element(pp) | |
| 1154 char_u **pp; | |
| 1155 { | |
| 1156 int c; | |
| 1157 int l = 1; | |
| 1158 char_u *p = *pp; | |
| 1159 | |
| 6830 | 1160 if (p[0] != NUL && p[1] == '.') |
| 167 | 1161 { |
| 1162 #ifdef FEAT_MBYTE | |
| 1163 if (has_mbyte) | |
| 474 | 1164 l = (*mb_ptr2len)(p + 2); |
| 167 | 1165 #endif |
| 1166 if (p[l + 2] == '.' && p[l + 3] == ']') | |
| 1167 { | |
| 1168 #ifdef FEAT_MBYTE | |
| 1169 if (has_mbyte) | |
| 1170 c = mb_ptr2char(p + 2); | |
| 1171 else | |
| 1172 #endif | |
| 1173 c = p[2]; | |
| 1174 *pp += l + 4; | |
| 1175 return c; | |
| 1176 } | |
| 1177 } | |
| 1178 return 0; | |
| 1179 } | |
| 1180 | |
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1181 static void get_cpo_flags __ARGS((void)); |
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1182 static int reg_cpo_lit; /* 'cpoptions' contains 'l' flag */ |
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1183 static int reg_cpo_bsl; /* 'cpoptions' contains '\' flag */ |
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1184 |
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1185 static void |
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1186 get_cpo_flags() |
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1187 { |
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1188 reg_cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; |
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1189 reg_cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; |
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1190 } |
| 167 | 1191 |
| 1192 /* | |
| 1193 * Skip over a "[]" range. | |
| 1194 * "p" must point to the character after the '['. | |
| 1195 * The returned pointer is on the matching ']', or the terminating NUL. | |
| 1196 */ | |
| 1197 static char_u * | |
| 1198 skip_anyof(p) | |
| 1199 char_u *p; | |
| 1200 { | |
| 1201 #ifdef FEAT_MBYTE | |
| 1202 int l; | |
| 1203 #endif | |
| 1204 | |
| 1205 if (*p == '^') /* Complement of range. */ | |
| 1206 ++p; | |
| 1207 if (*p == ']' || *p == '-') | |
| 1208 ++p; | |
| 1209 while (*p != NUL && *p != ']') | |
| 1210 { | |
| 1211 #ifdef FEAT_MBYTE | |
| 474 | 1212 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 167 | 1213 p += l; |
| 1214 else | |
| 1215 #endif | |
| 1216 if (*p == '-') | |
| 1217 { | |
| 1218 ++p; | |
| 1219 if (*p != ']' && *p != NUL) | |
| 1220 mb_ptr_adv(p); | |
| 1221 } | |
| 1222 else if (*p == '\\' | |
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1223 && !reg_cpo_bsl |
| 167 | 1224 && (vim_strchr(REGEXP_INRANGE, p[1]) != NULL |
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1225 || (!reg_cpo_lit && vim_strchr(REGEXP_ABBR, p[1]) != NULL))) |
| 167 | 1226 p += 2; |
| 1227 else if (*p == '[') | |
| 1228 { | |
| 1229 if (get_char_class(&p) == CLASS_NONE | |
| 1230 && get_equi_class(&p) == 0 | |
| 6830 | 1231 && get_coll_element(&p) == 0 |
| 1232 && *p != NUL) | |
| 1233 ++p; /* it is not a class name and not NUL */ | |
| 167 | 1234 } |
| 1235 else | |
| 1236 ++p; | |
| 1237 } | |
| 1238 | |
| 1239 return p; | |
| 1240 } | |
| 1241 | |
| 1242 /* | |
| 7 | 1243 * Skip past regular expression. |
| 153 | 1244 * Stop at end of "startp" or where "dirc" is found ('/', '?', etc). |
| 7 | 1245 * Take care of characters with a backslash in front of it. |
| 1246 * Skip strings inside [ and ]. | |
| 1247 * When "newp" is not NULL and "dirc" is '?', make an allocated copy of the | |
| 1248 * expression and change "\?" to "?". If "*newp" is not NULL the expression | |
| 1249 * is changed in-place. | |
| 1250 */ | |
| 1251 char_u * | |
| 1252 skip_regexp(startp, dirc, magic, newp) | |
| 1253 char_u *startp; | |
| 1254 int dirc; | |
| 1255 int magic; | |
| 1256 char_u **newp; | |
| 1257 { | |
| 1258 int mymagic; | |
| 1259 char_u *p = startp; | |
| 1260 | |
| 1261 if (magic) | |
| 1262 mymagic = MAGIC_ON; | |
| 1263 else | |
| 1264 mymagic = MAGIC_OFF; | |
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1265 get_cpo_flags(); |
| 7 | 1266 |
| 39 | 1267 for (; p[0] != NUL; mb_ptr_adv(p)) |
| 7 | 1268 { |
| 1269 if (p[0] == dirc) /* found end of regexp */ | |
| 1270 break; | |
| 1271 if ((p[0] == '[' && mymagic >= MAGIC_ON) | |
| 1272 || (p[0] == '\\' && p[1] == '[' && mymagic <= MAGIC_OFF)) | |
| 1273 { | |
| 1274 p = skip_anyof(p + 1); | |
| 1275 if (p[0] == NUL) | |
| 1276 break; | |
| 1277 } | |
| 1278 else if (p[0] == '\\' && p[1] != NUL) | |
| 1279 { | |
| 1280 if (dirc == '?' && newp != NULL && p[1] == '?') | |
| 1281 { | |
| 1282 /* change "\?" to "?", make a copy first. */ | |
| 1283 if (*newp == NULL) | |
| 1284 { | |
| 1285 *newp = vim_strsave(startp); | |
| 1286 if (*newp != NULL) | |
| 1287 p = *newp + (p - startp); | |
| 1288 } | |
| 1289 if (*newp != NULL) | |
| 1621 | 1290 STRMOVE(p, p + 1); |
| 7 | 1291 else |
| 1292 ++p; | |
| 1293 } | |
| 1294 else | |
| 1295 ++p; /* skip next character */ | |
| 1296 if (*p == 'v') | |
| 1297 mymagic = MAGIC_ALL; | |
| 1298 else if (*p == 'V') | |
| 1299 mymagic = MAGIC_NONE; | |
| 1300 } | |
| 1301 } | |
| 1302 return p; | |
| 1303 } | |
| 1304 | |
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1305 static regprog_T *bt_regcomp __ARGS((char_u *expr, int re_flags)); |
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1306 static void bt_regfree __ARGS((regprog_T *prog)); |
| 4444 | 1307 |
| 7 | 1308 /* |
| 4444 | 1309 * bt_regcomp() - compile a regular expression into internal code for the |
| 1310 * traditional back track matcher. | |
| 41 | 1311 * Returns the program in allocated space. Returns NULL for an error. |
| 7 | 1312 * |
| 1313 * We can't allocate space until we know how big the compiled form will be, | |
| 1314 * but we can't compile it (and thus know how big it is) until we've got a | |
| 1315 * place to put the code. So we cheat: we compile it twice, once with code | |
| 1316 * generation turned off and size counting turned on, and once "for real". | |
| 1317 * This also means that we don't allocate space until we are sure that the | |
| 1318 * thing really will compile successfully, and we never have to move the | |
| 1319 * code and thus invalidate pointers into it. (Note that it has to be in | |
| 1320 * one piece because vim_free() must be able to free it all.) | |
| 1321 * | |
| 1322 * Whether upper/lower case is to be ignored is decided when executing the | |
| 1323 * program, it does not matter here. | |
| 1324 * | |
| 1325 * Beware that the optimization-preparation code in here knows about some | |
| 1326 * of the structure of the compiled regexp. | |
| 1327 * "re_flags": RE_MAGIC and/or RE_STRING. | |
| 1328 */ | |
| 4444 | 1329 static regprog_T * |
| 1330 bt_regcomp(expr, re_flags) | |
| 7 | 1331 char_u *expr; |
| 1332 int re_flags; | |
| 1333 { | |
| 4444 | 1334 bt_regprog_T *r; |
| 7 | 1335 char_u *scan; |
| 1336 char_u *longest; | |
| 1337 int len; | |
| 1338 int flags; | |
| 1339 | |
| 1340 if (expr == NULL) | |
| 1341 EMSG_RET_NULL(_(e_null)); | |
| 1342 | |
| 1343 init_class_tab(); | |
| 1344 | |
| 1345 /* | |
| 1346 * First pass: determine size, legality. | |
| 1347 */ | |
| 1348 regcomp_start(expr, re_flags); | |
| 1349 regcode = JUST_CALC_SIZE; | |
| 1350 regc(REGMAGIC); | |
| 1351 if (reg(REG_NOPAREN, &flags) == NULL) | |
| 1352 return NULL; | |
| 1353 | |
| 1354 /* Small enough for pointer-storage convention? */ | |
| 1355 #ifdef SMALL_MALLOC /* 16 bit storage allocation */ | |
| 1356 if (regsize >= 65536L - 256L) | |
| 1357 EMSG_RET_NULL(_("E339: Pattern too long")); | |
| 1358 #endif | |
| 1359 | |
| 1360 /* Allocate space. */ | |
| 4444 | 1361 r = (bt_regprog_T *)lalloc(sizeof(bt_regprog_T) + regsize, TRUE); |
| 7 | 1362 if (r == NULL) |
| 1363 return NULL; | |
| 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(prog) |
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1468 regprog_T *prog; |
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1469 { |
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1470 vim_free(prog); |
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1471 } |
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1472 |
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1473 /* |
| 7 | 1474 * Setup to parse the regexp. Used once to get the length and once to do it. |
| 1475 */ | |
| 1476 static void | |
| 1477 regcomp_start(expr, re_flags) | |
| 1478 char_u *expr; | |
| 1479 int re_flags; /* see vim_regcomp() */ | |
| 1480 { | |
| 1481 initchr(expr); | |
| 1482 if (re_flags & RE_MAGIC) | |
| 1483 reg_magic = MAGIC_ON; | |
| 1484 else | |
| 1485 reg_magic = MAGIC_OFF; | |
| 1486 reg_string = (re_flags & RE_STRING); | |
| 481 | 1487 reg_strict = (re_flags & RE_STRICT); |
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1488 get_cpo_flags(); |
| 7 | 1489 |
| 1490 num_complex_braces = 0; | |
| 1491 regnpar = 1; | |
| 1492 vim_memset(had_endbrace, 0, sizeof(had_endbrace)); | |
| 1493 #ifdef FEAT_SYN_HL | |
| 1494 regnzpar = 1; | |
| 1495 re_has_z = 0; | |
| 1496 #endif | |
| 1497 regsize = 0L; | |
| 2010 | 1498 reg_toolong = FALSE; |
| 7 | 1499 regflags = 0; |
| 1500 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 1501 had_eol = FALSE; | |
| 1502 #endif | |
| 1503 } | |
| 1504 | |
| 1505 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 1506 /* | |
| 1507 * Check if during the previous call to vim_regcomp the EOL item "$" has been | |
| 1508 * found. This is messy, but it works fine. | |
| 1509 */ | |
| 1510 int | |
| 1511 vim_regcomp_had_eol() | |
| 1512 { | |
| 1513 return had_eol; | |
| 1514 } | |
| 1515 #endif | |
| 1516 | |
| 1517 /* | |
| 4444 | 1518 * Parse regular expression, i.e. main body or parenthesized thing. |
| 7 | 1519 * |
| 1520 * Caller must absorb opening parenthesis. | |
| 1521 * | |
| 1522 * Combining parenthesis handling with the base level of regular expression | |
| 1523 * is a trifle forced, but the need to tie the tails of the branches to what | |
| 1524 * follows makes it hard to avoid. | |
| 1525 */ | |
| 1526 static char_u * | |
| 1527 reg(paren, flagp) | |
| 1528 int paren; /* REG_NOPAREN, REG_PAREN, REG_NPAREN or REG_ZPAREN */ | |
| 1529 int *flagp; | |
| 1530 { | |
| 1531 char_u *ret; | |
| 1532 char_u *br; | |
| 1533 char_u *ender; | |
| 1534 int parno = 0; | |
| 1535 int flags; | |
| 1536 | |
| 1537 *flagp = HASWIDTH; /* Tentatively. */ | |
| 1538 | |
| 1539 #ifdef FEAT_SYN_HL | |
| 1540 if (paren == REG_ZPAREN) | |
| 1541 { | |
| 1542 /* Make a ZOPEN node. */ | |
| 1543 if (regnzpar >= NSUBEXP) | |
| 1544 EMSG_RET_NULL(_("E50: Too many \\z(")); | |
| 1545 parno = regnzpar; | |
| 1546 regnzpar++; | |
| 1547 ret = regnode(ZOPEN + parno); | |
| 1548 } | |
| 1549 else | |
| 1550 #endif | |
| 1551 if (paren == REG_PAREN) | |
| 1552 { | |
| 1553 /* Make a MOPEN node. */ | |
| 1554 if (regnpar >= NSUBEXP) | |
| 4444 | 1555 EMSG2_RET_NULL(_("E51: Too many %s("), reg_magic == MAGIC_ALL); |
| 7 | 1556 parno = regnpar; |
| 1557 ++regnpar; | |
| 1558 ret = regnode(MOPEN + parno); | |
| 1559 } | |
| 1560 else if (paren == REG_NPAREN) | |
| 1561 { | |
| 1562 /* Make a NOPEN node. */ | |
| 1563 ret = regnode(NOPEN); | |
| 1564 } | |
| 1565 else | |
| 1566 ret = NULL; | |
| 1567 | |
| 1568 /* Pick up the branches, linking them together. */ | |
| 1569 br = regbranch(&flags); | |
| 1570 if (br == NULL) | |
| 1571 return NULL; | |
| 1572 if (ret != NULL) | |
| 1573 regtail(ret, br); /* [MZ]OPEN -> first. */ | |
| 1574 else | |
| 1575 ret = br; | |
| 1576 /* If one of the branches can be zero-width, the whole thing can. | |
| 1577 * If one of the branches has * at start or matches a line-break, the | |
| 1578 * whole thing can. */ | |
| 1579 if (!(flags & HASWIDTH)) | |
| 1580 *flagp &= ~HASWIDTH; | |
| 1581 *flagp |= flags & (SPSTART | HASNL | HASLOOKBH); | |
| 1582 while (peekchr() == Magic('|')) | |
| 1583 { | |
| 1584 skipchr(); | |
| 1585 br = regbranch(&flags); | |
| 2010 | 1586 if (br == NULL || reg_toolong) |
| 7 | 1587 return NULL; |
| 1588 regtail(ret, br); /* BRANCH -> BRANCH. */ | |
| 1589 if (!(flags & HASWIDTH)) | |
| 1590 *flagp &= ~HASWIDTH; | |
| 1591 *flagp |= flags & (SPSTART | HASNL | HASLOOKBH); | |
| 1592 } | |
| 1593 | |
| 1594 /* Make a closing node, and hook it on the end. */ | |
| 1595 ender = regnode( | |
| 1596 #ifdef FEAT_SYN_HL | |
| 1597 paren == REG_ZPAREN ? ZCLOSE + parno : | |
| 1598 #endif | |
| 1599 paren == REG_PAREN ? MCLOSE + parno : | |
| 1600 paren == REG_NPAREN ? NCLOSE : END); | |
| 1601 regtail(ret, ender); | |
| 1602 | |
| 1603 /* Hook the tails of the branches to the closing node. */ | |
| 1604 for (br = ret; br != NULL; br = regnext(br)) | |
| 1605 regoptail(br, ender); | |
| 1606 | |
| 1607 /* Check for proper termination. */ | |
| 1608 if (paren != REG_NOPAREN && getchr() != Magic(')')) | |
| 1609 { | |
| 1610 #ifdef FEAT_SYN_HL | |
| 1611 if (paren == REG_ZPAREN) | |
| 308 | 1612 EMSG_RET_NULL(_("E52: Unmatched \\z(")); |
| 7 | 1613 else |
| 1614 #endif | |
| 1615 if (paren == REG_NPAREN) | |
| 4444 | 1616 EMSG2_RET_NULL(_(e_unmatchedpp), reg_magic == MAGIC_ALL); |
| 7 | 1617 else |
| 4444 | 1618 EMSG2_RET_NULL(_(e_unmatchedp), reg_magic == MAGIC_ALL); |
| 7 | 1619 } |
| 1620 else if (paren == REG_NOPAREN && peekchr() != NUL) | |
| 1621 { | |
| 1622 if (curchr == Magic(')')) | |
| 4444 | 1623 EMSG2_RET_NULL(_(e_unmatchedpar), reg_magic == MAGIC_ALL); |
| 7 | 1624 else |
| 308 | 1625 EMSG_RET_NULL(_(e_trailing)); /* "Can't happen". */ |
| 7 | 1626 /* NOTREACHED */ |
| 1627 } | |
| 1628 /* | |
| 1629 * Here we set the flag allowing back references to this set of | |
| 1630 * parentheses. | |
| 1631 */ | |
| 1632 if (paren == REG_PAREN) | |
| 1633 had_endbrace[parno] = TRUE; /* have seen the close paren */ | |
| 1634 return ret; | |
| 1635 } | |
| 1636 | |
| 1637 /* | |
| 4444 | 1638 * Parse one alternative of an | operator. |
| 7 | 1639 * Implements the & operator. |
| 1640 */ | |
| 1641 static char_u * | |
| 1642 regbranch(flagp) | |
| 1643 int *flagp; | |
| 1644 { | |
| 1645 char_u *ret; | |
| 1646 char_u *chain = NULL; | |
| 1647 char_u *latest; | |
| 1648 int flags; | |
| 1649 | |
| 1650 *flagp = WORST | HASNL; /* Tentatively. */ | |
| 1651 | |
| 1652 ret = regnode(BRANCH); | |
| 1653 for (;;) | |
| 1654 { | |
| 1655 latest = regconcat(&flags); | |
| 1656 if (latest == NULL) | |
| 1657 return NULL; | |
| 1658 /* If one of the branches has width, the whole thing has. If one of | |
| 1659 * the branches anchors at start-of-line, the whole thing does. | |
| 1660 * If one of the branches uses look-behind, the whole thing does. */ | |
| 1661 *flagp |= flags & (HASWIDTH | SPSTART | HASLOOKBH); | |
| 1662 /* If one of the branches doesn't match a line-break, the whole thing | |
| 1663 * doesn't. */ | |
| 1664 *flagp &= ~HASNL | (flags & HASNL); | |
| 1665 if (chain != NULL) | |
| 1666 regtail(chain, latest); | |
| 1667 if (peekchr() != Magic('&')) | |
| 1668 break; | |
| 1669 skipchr(); | |
| 1670 regtail(latest, regnode(END)); /* operand ends */ | |
| 2010 | 1671 if (reg_toolong) |
| 1672 break; | |
| 7 | 1673 reginsert(MATCH, latest); |
| 1674 chain = latest; | |
| 1675 } | |
| 1676 | |
| 1677 return ret; | |
| 1678 } | |
| 1679 | |
| 1680 /* | |
| 4444 | 1681 * Parse one alternative of an | or & operator. |
| 7 | 1682 * Implements the concatenation operator. |
| 1683 */ | |
| 1684 static char_u * | |
| 1685 regconcat(flagp) | |
| 1686 int *flagp; | |
| 1687 { | |
| 1688 char_u *first = NULL; | |
| 1689 char_u *chain = NULL; | |
| 1690 char_u *latest; | |
| 1691 int flags; | |
| 1692 int cont = TRUE; | |
| 1693 | |
| 1694 *flagp = WORST; /* Tentatively. */ | |
| 1695 | |
| 1696 while (cont) | |
| 1697 { | |
| 1698 switch (peekchr()) | |
| 1699 { | |
| 1700 case NUL: | |
| 1701 case Magic('|'): | |
| 1702 case Magic('&'): | |
| 1703 case Magic(')'): | |
| 1704 cont = FALSE; | |
| 1705 break; | |
| 1706 case Magic('Z'): | |
| 1707 #ifdef FEAT_MBYTE | |
| 1708 regflags |= RF_ICOMBINE; | |
| 1709 #endif | |
| 1710 skipchr_keepstart(); | |
| 1711 break; | |
| 1712 case Magic('c'): | |
| 1713 regflags |= RF_ICASE; | |
| 1714 skipchr_keepstart(); | |
| 1715 break; | |
| 1716 case Magic('C'): | |
| 1717 regflags |= RF_NOICASE; | |
| 1718 skipchr_keepstart(); | |
| 1719 break; | |
| 1720 case Magic('v'): | |
| 1721 reg_magic = MAGIC_ALL; | |
| 1722 skipchr_keepstart(); | |
| 1723 curchr = -1; | |
| 1724 break; | |
| 1725 case Magic('m'): | |
| 1726 reg_magic = MAGIC_ON; | |
| 1727 skipchr_keepstart(); | |
| 1728 curchr = -1; | |
| 1729 break; | |
| 1730 case Magic('M'): | |
| 1731 reg_magic = MAGIC_OFF; | |
| 1732 skipchr_keepstart(); | |
| 1733 curchr = -1; | |
| 1734 break; | |
| 1735 case Magic('V'): | |
| 1736 reg_magic = MAGIC_NONE; | |
| 1737 skipchr_keepstart(); | |
| 1738 curchr = -1; | |
| 1739 break; | |
| 1740 default: | |
| 1741 latest = regpiece(&flags); | |
| 2010 | 1742 if (latest == NULL || reg_toolong) |
| 7 | 1743 return NULL; |
| 1744 *flagp |= flags & (HASWIDTH | HASNL | HASLOOKBH); | |
| 1745 if (chain == NULL) /* First piece. */ | |
| 1746 *flagp |= flags & SPSTART; | |
| 1747 else | |
| 1748 regtail(chain, latest); | |
| 1749 chain = latest; | |
| 1750 if (first == NULL) | |
| 1751 first = latest; | |
| 1752 break; | |
| 1753 } | |
| 1754 } | |
| 1755 if (first == NULL) /* Loop ran zero times. */ | |
| 1756 first = regnode(NOTHING); | |
| 1757 return first; | |
| 1758 } | |
| 1759 | |
| 1760 /* | |
| 4444 | 1761 * Parse something followed by possible [*+=]. |
| 7 | 1762 * |
| 1763 * Note that the branching code sequences used for = and the general cases | |
| 1764 * of * and + are somewhat optimized: they use the same NOTHING node as | |
| 1765 * both the endmarker for their branch list and the body of the last branch. | |
| 1766 * It might seem that this node could be dispensed with entirely, but the | |
| 1767 * endmarker role is not redundant. | |
| 1768 */ | |
| 1769 static char_u * | |
| 1770 regpiece(flagp) | |
| 1771 int *flagp; | |
| 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 int 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 * | |
| 1931 regatom(flagp) | |
| 1932 int *flagp; | |
| 1933 { | |
| 1934 char_u *ret; | |
| 1935 int flags; | |
| 1936 int c; | |
| 1937 char_u *p; | |
| 1938 int extra = 0; | |
| 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 */ | |
| 1988 /*FALLTHROUGH*/ | |
| 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; | |
| 7 | 2068 EMSG_RET_NULL(_(e_internal)); /* Supposed to be caught earlier. */ |
| 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'); | |
| 2118 /* | |
| 2119 * Check if the back reference is legal. We must have seen the | |
| 2120 * close brace. | |
| 2121 * TODO: Should also check that we don't refer to something | |
| 2122 * that is repeated (+*=): what instance of the repetition | |
| 2123 * should we match? | |
| 2124 */ | |
| 2125 if (!had_endbrace[refnum]) | |
| 2126 { | |
| 2127 /* Trick: check if "@<=" or "@<!" follows, in which case | |
| 2128 * the \1 can appear before the referenced match. */ | |
| 2129 for (p = regparse; *p != NUL; ++p) | |
| 2130 if (p[0] == '@' && p[1] == '<' | |
| 2131 && (p[2] == '!' || p[2] == '=')) | |
| 2132 break; | |
| 2133 if (*p == NUL) | |
| 2134 EMSG_RET_NULL(_("E65: Illegal back reference")); | |
| 2135 } | |
| 2136 ret = regnode(BACKREF + refnum); | |
| 2137 } | |
| 2138 break; | |
| 2139 | |
| 2140 case Magic('z'): | |
| 2141 { | |
| 2142 c = no_Magic(getchr()); | |
| 2143 switch (c) | |
| 2144 { | |
| 741 | 2145 #ifdef FEAT_SYN_HL |
| 7 | 2146 case '(': if (reg_do_extmatch != REX_SET) |
|
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|
2147 EMSG_RET_NULL(_(e_z_not_allowed)); |
| 7 | 2148 if (one_exactly) |
| 2149 EMSG_ONE_RET_NULL; | |
| 2150 ret = reg(REG_ZPAREN, &flags); | |
| 2151 if (ret == NULL) | |
| 2152 return NULL; | |
| 2153 *flagp |= flags & (HASWIDTH|SPSTART|HASNL|HASLOOKBH); | |
| 2154 re_has_z = REX_SET; | |
| 2155 break; | |
| 2156 | |
| 2157 case '1': | |
| 2158 case '2': | |
| 2159 case '3': | |
| 2160 case '4': | |
| 2161 case '5': | |
| 2162 case '6': | |
| 2163 case '7': | |
| 2164 case '8': | |
| 2165 case '9': if (reg_do_extmatch != REX_USE) | |
|
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|
2166 EMSG_RET_NULL(_(e_z1_not_allowed)); |
| 7 | 2167 ret = regnode(ZREF + c - '0'); |
| 2168 re_has_z = REX_USE; | |
| 2169 break; | |
| 741 | 2170 #endif |
| 7 | 2171 |
| 2172 case 's': ret = regnode(MOPEN + 0); | |
| 6203 | 2173 if (re_mult_next("\\zs") == FAIL) |
| 2174 return NULL; | |
| 7 | 2175 break; |
| 2176 | |
| 2177 case 'e': ret = regnode(MCLOSE + 0); | |
| 6203 | 2178 if (re_mult_next("\\ze") == FAIL) |
| 2179 return NULL; | |
| 7 | 2180 break; |
| 2181 | |
| 2182 default: EMSG_RET_NULL(_("E68: Invalid character after \\z")); | |
| 2183 } | |
| 2184 } | |
| 2185 break; | |
| 2186 | |
| 2187 case Magic('%'): | |
| 2188 { | |
| 2189 c = no_Magic(getchr()); | |
| 2190 switch (c) | |
| 2191 { | |
| 2192 /* () without a back reference */ | |
| 2193 case '(': | |
| 2194 if (one_exactly) | |
| 2195 EMSG_ONE_RET_NULL; | |
| 2196 ret = reg(REG_NPAREN, &flags); | |
| 2197 if (ret == NULL) | |
| 2198 return NULL; | |
| 2199 *flagp |= flags & (HASWIDTH | SPSTART | HASNL | HASLOOKBH); | |
| 2200 break; | |
| 2201 | |
| 2202 /* Catch \%^ and \%$ regardless of where they appear in the | |
| 2203 * pattern -- regardless of whether or not it makes sense. */ | |
| 2204 case '^': | |
| 2205 ret = regnode(RE_BOF); | |
| 2206 break; | |
| 2207 | |
| 2208 case '$': | |
| 2209 ret = regnode(RE_EOF); | |
| 2210 break; | |
| 2211 | |
| 2212 case '#': | |
| 2213 ret = regnode(CURSOR); | |
| 2214 break; | |
| 2215 | |
| 639 | 2216 case 'V': |
| 2217 ret = regnode(RE_VISUAL); | |
| 2218 break; | |
| 2219 | |
| 5901 | 2220 case 'C': |
| 2221 ret = regnode(RE_COMPOSING); | |
| 2222 break; | |
| 2223 | |
| 7 | 2224 /* \%[abc]: Emit as a list of branches, all ending at the last |
| 2225 * branch which matches nothing. */ | |
| 2226 case '[': | |
| 2227 if (one_exactly) /* doesn't nest */ | |
| 2228 EMSG_ONE_RET_NULL; | |
| 2229 { | |
| 2230 char_u *lastbranch; | |
| 2231 char_u *lastnode = NULL; | |
| 2232 char_u *br; | |
| 2233 | |
| 2234 ret = NULL; | |
| 2235 while ((c = getchr()) != ']') | |
| 2236 { | |
| 2237 if (c == NUL) | |
|
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|
2238 EMSG2_RET_NULL(_(e_missing_sb), |
| 7 | 2239 reg_magic == MAGIC_ALL); |
| 2240 br = regnode(BRANCH); | |
| 2241 if (ret == NULL) | |
| 2242 ret = br; | |
| 2243 else | |
| 2244 regtail(lastnode, br); | |
| 2245 | |
| 2246 ungetchr(); | |
| 2247 one_exactly = TRUE; | |
| 2248 lastnode = regatom(flagp); | |
| 2249 one_exactly = FALSE; | |
| 2250 if (lastnode == NULL) | |
| 2251 return NULL; | |
| 2252 } | |
| 2253 if (ret == NULL) | |
|
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|
2254 EMSG2_RET_NULL(_(e_empty_sb), |
| 7 | 2255 reg_magic == MAGIC_ALL); |
| 2256 lastbranch = regnode(BRANCH); | |
| 2257 br = regnode(NOTHING); | |
| 2258 if (ret != JUST_CALC_SIZE) | |
| 2259 { | |
| 2260 regtail(lastnode, br); | |
| 2261 regtail(lastbranch, br); | |
| 2262 /* connect all branches to the NOTHING | |
| 2263 * branch at the end */ | |
| 2264 for (br = ret; br != lastnode; ) | |
| 2265 { | |
| 2266 if (OP(br) == BRANCH) | |
| 2267 { | |
| 2268 regtail(br, lastbranch); | |
| 2269 br = OPERAND(br); | |
| 2270 } | |
| 2271 else | |
| 2272 br = regnext(br); | |
| 2273 } | |
| 2274 } | |
| 1701 | 2275 *flagp &= ~(HASWIDTH | SIMPLE); |
| 7 | 2276 break; |
| 2277 } | |
| 2278 | |
| 24 | 2279 case 'd': /* %d123 decimal */ |
| 2280 case 'o': /* %o123 octal */ | |
| 2281 case 'x': /* %xab hex 2 */ | |
| 2282 case 'u': /* %uabcd hex 4 */ | |
| 2283 case 'U': /* %U1234abcd hex 8 */ | |
| 2284 { | |
| 2285 int i; | |
| 2286 | |
| 2287 switch (c) | |
| 2288 { | |
| 2289 case 'd': i = getdecchrs(); break; | |
| 2290 case 'o': i = getoctchrs(); break; | |
| 2291 case 'x': i = gethexchrs(2); break; | |
| 2292 case 'u': i = gethexchrs(4); break; | |
| 2293 case 'U': i = gethexchrs(8); break; | |
| 2294 default: i = -1; break; | |
| 2295 } | |
| 2296 | |
| 2297 if (i < 0) | |
| 4444 | 2298 EMSG2_RET_NULL( |
| 24 | 2299 _("E678: Invalid character after %s%%[dxouU]"), |
| 2300 reg_magic == MAGIC_ALL); | |
| 714 | 2301 #ifdef FEAT_MBYTE |
| 2302 if (use_multibytecode(i)) | |
| 2303 ret = regnode(MULTIBYTECODE); | |
| 2304 else | |
| 2305 #endif | |
| 2306 ret = regnode(EXACTLY); | |
| 24 | 2307 if (i == 0) |
| 2308 regc(0x0a); | |
| 2309 else | |
| 2310 #ifdef FEAT_MBYTE | |
| 2311 regmbc(i); | |
| 2312 #else | |
| 2313 regc(i); | |
| 2314 #endif | |
| 2315 regc(NUL); | |
| 2316 *flagp |= HASWIDTH; | |
| 2317 break; | |
| 2318 } | |
| 2319 | |
| 7 | 2320 default: |
| 639 | 2321 if (VIM_ISDIGIT(c) || c == '<' || c == '>' |
| 2322 || c == '\'') | |
| 7 | 2323 { |
| 2324 long_u n = 0; | |
| 2325 int cmp; | |
| 2326 | |
| 2327 cmp = c; | |
| 2328 if (cmp == '<' || cmp == '>') | |
| 2329 c = getchr(); | |
| 2330 while (VIM_ISDIGIT(c)) | |
| 2331 { | |
| 2332 n = n * 10 + (c - '0'); | |
| 2333 c = getchr(); | |
| 2334 } | |
| 639 | 2335 if (c == '\'' && n == 0) |
| 2336 { | |
| 2337 /* "\%'m", "\%<'m" and "\%>'m": Mark */ | |
| 2338 c = getchr(); | |
| 2339 ret = regnode(RE_MARK); | |
| 2340 if (ret == JUST_CALC_SIZE) | |
| 2341 regsize += 2; | |
| 2342 else | |
| 2343 { | |
| 2344 *regcode++ = c; | |
| 2345 *regcode++ = cmp; | |
| 2346 } | |
| 2347 break; | |
| 2348 } | |
| 2349 else if (c == 'l' || c == 'c' || c == 'v') | |
| 7 | 2350 { |
| 2351 if (c == 'l') | |
| 2352 ret = regnode(RE_LNUM); | |
| 2353 else if (c == 'c') | |
| 2354 ret = regnode(RE_COL); | |
| 2355 else | |
| 2356 ret = regnode(RE_VCOL); | |
| 2357 if (ret == JUST_CALC_SIZE) | |
| 2358 regsize += 5; | |
| 2359 else | |
| 2360 { | |
| 2361 /* put the number and the optional | |
| 2362 * comparator after the opcode */ | |
| 2363 regcode = re_put_long(regcode, n); | |
| 2364 *regcode++ = cmp; | |
| 2365 } | |
| 2366 break; | |
| 2367 } | |
| 2368 } | |
| 2369 | |
| 4444 | 2370 EMSG2_RET_NULL(_("E71: Invalid character after %s%%"), |
| 7 | 2371 reg_magic == MAGIC_ALL); |
| 2372 } | |
| 2373 } | |
| 2374 break; | |
| 2375 | |
| 2376 case Magic('['): | |
| 2377 collection: | |
| 2378 { | |
| 2379 char_u *lp; | |
| 2380 | |
| 2381 /* | |
| 2382 * If there is no matching ']', we assume the '[' is a normal | |
| 2383 * character. This makes 'incsearch' and ":help [" work. | |
| 2384 */ | |
| 2385 lp = skip_anyof(regparse); | |
| 2386 if (*lp == ']') /* there is a matching ']' */ | |
| 2387 { | |
| 2388 int startc = -1; /* > 0 when next '-' is a range */ | |
| 2389 int endc; | |
| 2390 | |
| 2391 /* | |
| 2392 * In a character class, different parsing rules apply. | |
| 2393 * Not even \ is special anymore, nothing is. | |
| 2394 */ | |
| 2395 if (*regparse == '^') /* Complement of range. */ | |
| 2396 { | |
| 2397 ret = regnode(ANYBUT + extra); | |
| 2398 regparse++; | |
| 2399 } | |
| 2400 else | |
| 2401 ret = regnode(ANYOF + extra); | |
| 2402 | |
| 2403 /* At the start ']' and '-' mean the literal character. */ | |
| 2404 if (*regparse == ']' || *regparse == '-') | |
| 167 | 2405 { |
| 2406 startc = *regparse; | |
| 7 | 2407 regc(*regparse++); |
| 167 | 2408 } |
| 7 | 2409 |
| 2410 while (*regparse != NUL && *regparse != ']') | |
| 2411 { | |
| 2412 if (*regparse == '-') | |
| 2413 { | |
| 2414 ++regparse; | |
| 2415 /* The '-' is not used for a range at the end and | |
| 2416 * after or before a '\n'. */ | |
| 2417 if (*regparse == ']' || *regparse == NUL | |
| 2418 || startc == -1 | |
| 2419 || (regparse[0] == '\\' && regparse[1] == 'n')) | |
| 2420 { | |
| 2421 regc('-'); | |
| 2422 startc = '-'; /* [--x] is a range */ | |
| 2423 } | |
| 2424 else | |
| 2425 { | |
| 167 | 2426 /* Also accept "a-[.z.]" */ |
| 2427 endc = 0; | |
| 2428 if (*regparse == '[') | |
| 2429 endc = get_coll_element(®parse); | |
| 2430 if (endc == 0) | |
| 2431 { | |
| 7 | 2432 #ifdef FEAT_MBYTE |
| 167 | 2433 if (has_mbyte) |
| 2434 endc = mb_ptr2char_adv(®parse); | |
| 2435 else | |
| 7 | 2436 #endif |
| 167 | 2437 endc = *regparse++; |
| 2438 } | |
| 24 | 2439 |
| 2440 /* Handle \o40, \x20 and \u20AC style sequences */ | |
|
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2441 if (endc == '\\' && !reg_cpo_lit && !reg_cpo_bsl) |
| 24 | 2442 endc = coll_get_char(); |
| 2443 | |
| 7 | 2444 if (startc > endc) |
| 2445 EMSG_RET_NULL(_(e_invrange)); | |
| 2446 #ifdef FEAT_MBYTE | |
| 2447 if (has_mbyte && ((*mb_char2len)(startc) > 1 | |
| 2448 || (*mb_char2len)(endc) > 1)) | |
| 2449 { | |
| 2450 /* Limit to a range of 256 chars */ | |
| 2451 if (endc > startc + 256) | |
| 2452 EMSG_RET_NULL(_(e_invrange)); | |
| 2453 while (++startc <= endc) | |
| 2454 regmbc(startc); | |
| 2455 } | |
| 2456 else | |
| 2457 #endif | |
| 2458 { | |
| 2459 #ifdef EBCDIC | |
| 2460 int alpha_only = FALSE; | |
| 2461 | |
| 2462 /* for alphabetical range skip the gaps | |
| 2463 * 'i'-'j', 'r'-'s', 'I'-'J' and 'R'-'S'. */ | |
| 2464 if (isalpha(startc) && isalpha(endc)) | |
| 2465 alpha_only = TRUE; | |
| 2466 #endif | |
| 2467 while (++startc <= endc) | |
| 2468 #ifdef EBCDIC | |
| 2469 if (!alpha_only || isalpha(startc)) | |
| 2470 #endif | |
| 2471 regc(startc); | |
| 2472 } | |
| 2473 startc = -1; | |
| 2474 } | |
| 2475 } | |
| 2476 /* | |
| 2477 * Only "\]", "\^", "\]" and "\\" are special in Vi. Vim | |
| 2478 * accepts "\t", "\e", etc., but only when the 'l' flag in | |
| 2479 * 'cpoptions' is not included. | |
| 167 | 2480 * Posix doesn't recognize backslash at all. |
| 7 | 2481 */ |
| 2482 else if (*regparse == '\\' | |
|
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2483 && !reg_cpo_bsl |
| 7 | 2484 && (vim_strchr(REGEXP_INRANGE, regparse[1]) != NULL |
|
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|
2485 || (!reg_cpo_lit |
| 7 | 2486 && vim_strchr(REGEXP_ABBR, |
| 2487 regparse[1]) != NULL))) | |
| 2488 { | |
| 2489 regparse++; | |
| 2490 if (*regparse == 'n') | |
| 2491 { | |
| 2492 /* '\n' in range: also match NL */ | |
| 2493 if (ret != JUST_CALC_SIZE) | |
| 2494 { | |
| 4084 | 2495 /* Using \n inside [^] does not change what |
| 2496 * matches. "[^\n]" is the same as ".". */ | |
| 2497 if (*ret == ANYOF) | |
| 2498 { | |
| 7 | 2499 *ret = ANYOF + ADD_NL; |
| 4084 | 2500 *flagp |= HASNL; |
| 2501 } | |
| 7 | 2502 /* else: must have had a \n already */ |
| 2503 } | |
| 2504 regparse++; | |
| 2505 startc = -1; | |
| 2506 } | |
| 24 | 2507 else if (*regparse == 'd' |
| 2508 || *regparse == 'o' | |
| 2509 || *regparse == 'x' | |
| 2510 || *regparse == 'u' | |
| 2511 || *regparse == 'U') | |
| 2512 { | |
| 2513 startc = coll_get_char(); | |
| 2514 if (startc == 0) | |
| 2515 regc(0x0a); | |
| 2516 else | |
| 2517 #ifdef FEAT_MBYTE | |
| 2518 regmbc(startc); | |
| 2519 #else | |
| 2520 regc(startc); | |
| 2521 #endif | |
| 2522 } | |
| 7 | 2523 else |
| 2524 { | |
| 2525 startc = backslash_trans(*regparse++); | |
| 2526 regc(startc); | |
| 2527 } | |
| 2528 } | |
| 2529 else if (*regparse == '[') | |
| 2530 { | |
| 2531 int c_class; | |
| 2532 int cu; | |
| 2533 | |
| 167 | 2534 c_class = get_char_class(®parse); |
| 7 | 2535 startc = -1; |
| 2536 /* Characters assumed to be 8 bits! */ | |
| 2537 switch (c_class) | |
| 2538 { | |
| 2539 case CLASS_NONE: | |
| 167 | 2540 c_class = get_equi_class(®parse); |
| 2541 if (c_class != 0) | |
| 2542 { | |
| 2543 /* produce equivalence class */ | |
| 2544 reg_equi_class(c_class); | |
| 2545 } | |
| 2546 else if ((c_class = | |
| 2547 get_coll_element(®parse)) != 0) | |
| 2548 { | |
| 2549 /* produce a collating element */ | |
| 2550 regmbc(c_class); | |
| 2551 } | |
| 2552 else | |
| 2553 { | |
| 2554 /* literal '[', allow [[-x] as a range */ | |
| 2555 startc = *regparse++; | |
| 2556 regc(startc); | |
| 2557 } | |
| 7 | 2558 break; |
| 2559 case CLASS_ALNUM: | |
| 2560 for (cu = 1; cu <= 255; cu++) | |
| 2561 if (isalnum(cu)) | |
| 2562 regc(cu); | |
| 2563 break; | |
| 2564 case CLASS_ALPHA: | |
| 2565 for (cu = 1; cu <= 255; cu++) | |
| 2566 if (isalpha(cu)) | |
| 2567 regc(cu); | |
| 2568 break; | |
| 2569 case CLASS_BLANK: | |
| 2570 regc(' '); | |
| 2571 regc('\t'); | |
| 2572 break; | |
| 2573 case CLASS_CNTRL: | |
| 2574 for (cu = 1; cu <= 255; cu++) | |
| 2575 if (iscntrl(cu)) | |
| 2576 regc(cu); | |
| 2577 break; | |
| 2578 case CLASS_DIGIT: | |
| 2579 for (cu = 1; cu <= 255; cu++) | |
| 2580 if (VIM_ISDIGIT(cu)) | |
| 2581 regc(cu); | |
| 2582 break; | |
| 2583 case CLASS_GRAPH: | |
| 2584 for (cu = 1; cu <= 255; cu++) | |
| 2585 if (isgraph(cu)) | |
| 2586 regc(cu); | |
| 2587 break; | |
| 2588 case CLASS_LOWER: | |
| 2589 for (cu = 1; cu <= 255; cu++) | |
| 1347 | 2590 if (MB_ISLOWER(cu)) |
| 7 | 2591 regc(cu); |
| 2592 break; | |
| 2593 case CLASS_PRINT: | |
| 2594 for (cu = 1; cu <= 255; cu++) | |
| 2595 if (vim_isprintc(cu)) | |
| 2596 regc(cu); | |
| 2597 break; | |
| 2598 case CLASS_PUNCT: | |
| 2599 for (cu = 1; cu <= 255; cu++) | |
| 2600 if (ispunct(cu)) | |
| 2601 regc(cu); | |
| 2602 break; | |
| 2603 case CLASS_SPACE: | |
| 2604 for (cu = 9; cu <= 13; cu++) | |
| 2605 regc(cu); | |
| 2606 regc(' '); | |
| 2607 break; | |
| 2608 case CLASS_UPPER: | |
| 2609 for (cu = 1; cu <= 255; cu++) | |
| 1347 | 2610 if (MB_ISUPPER(cu)) |
| 7 | 2611 regc(cu); |
| 2612 break; | |
| 2613 case CLASS_XDIGIT: | |
| 2614 for (cu = 1; cu <= 255; cu++) | |
| 2615 if (vim_isxdigit(cu)) | |
| 2616 regc(cu); | |
| 2617 break; | |
| 2618 case CLASS_TAB: | |
| 2619 regc('\t'); | |
| 2620 break; | |
| 2621 case CLASS_RETURN: | |
| 2622 regc('\r'); | |
| 2623 break; | |
| 2624 case CLASS_BACKSPACE: | |
| 2625 regc('\b'); | |
| 2626 break; | |
| 2627 case CLASS_ESCAPE: | |
| 2628 regc('\033'); | |
| 2629 break; | |
| 2630 } | |
| 2631 } | |
| 2632 else | |
| 2633 { | |
| 2634 #ifdef FEAT_MBYTE | |
| 2635 if (has_mbyte) | |
| 2636 { | |
| 2637 int len; | |
| 2638 | |
| 2639 /* produce a multibyte character, including any | |
| 2640 * following composing characters */ | |
| 2641 startc = mb_ptr2char(regparse); | |
| 474 | 2642 len = (*mb_ptr2len)(regparse); |
| 7 | 2643 if (enc_utf8 && utf_char2len(startc) != len) |
| 2644 startc = -1; /* composing chars */ | |
| 2645 while (--len >= 0) | |
| 2646 regc(*regparse++); | |
| 2647 } | |
| 2648 else | |
| 2649 #endif | |
| 2650 { | |
| 2651 startc = *regparse++; | |
| 2652 regc(startc); | |
| 2653 } | |
| 2654 } | |
| 2655 } | |
| 2656 regc(NUL); | |
| 2657 prevchr_len = 1; /* last char was the ']' */ | |
| 2658 if (*regparse != ']') | |
| 2659 EMSG_RET_NULL(_(e_toomsbra)); /* Cannot happen? */ | |
| 2660 skipchr(); /* let's be friends with the lexer again */ | |
| 2661 *flagp |= HASWIDTH | SIMPLE; | |
| 2662 break; | |
| 2663 } | |
| 481 | 2664 else if (reg_strict) |
| 4444 | 2665 EMSG2_RET_NULL(_(e_missingbracket), reg_magic > MAGIC_OFF); |
| 7 | 2666 } |
| 2667 /* FALLTHROUGH */ | |
| 2668 | |
| 2669 default: | |
| 2670 { | |
| 2671 int len; | |
| 2672 | |
| 2673 #ifdef FEAT_MBYTE | |
| 2674 /* A multi-byte character is handled as a separate atom if it's | |
| 714 | 2675 * before a multi and when it's a composing char. */ |
| 2676 if (use_multibytecode(c)) | |
| 7 | 2677 { |
| 714 | 2678 do_multibyte: |
| 7 | 2679 ret = regnode(MULTIBYTECODE); |
| 2680 regmbc(c); | |
| 2681 *flagp |= HASWIDTH | SIMPLE; | |
| 2682 break; | |
| 2683 } | |
| 2684 #endif | |
| 2685 | |
| 2686 ret = regnode(EXACTLY); | |
| 2687 | |
| 2688 /* | |
| 2689 * Append characters as long as: | |
| 2690 * - there is no following multi, we then need the character in | |
| 2691 * front of it as a single character operand | |
| 2692 * - not running into a Magic character | |
| 2693 * - "one_exactly" is not set | |
| 2694 * But always emit at least one character. Might be a Multi, | |
| 2695 * e.g., a "[" without matching "]". | |
| 2696 */ | |
| 2697 for (len = 0; c != NUL && (len == 0 | |
| 2698 || (re_multi_type(peekchr()) == NOT_MULTI | |
| 2699 && !one_exactly | |
| 2700 && !is_Magic(c))); ++len) | |
| 2701 { | |
| 2702 c = no_Magic(c); | |
| 2703 #ifdef FEAT_MBYTE | |
| 2704 if (has_mbyte) | |
| 2705 { | |
| 2706 regmbc(c); | |
| 2707 if (enc_utf8) | |
| 2708 { | |
| 2709 int l; | |
| 2710 | |
| 714 | 2711 /* Need to get composing character too. */ |
| 7 | 2712 for (;;) |
| 2713 { | |
| 714 | 2714 l = utf_ptr2len(regparse); |
| 2715 if (!UTF_COMPOSINGLIKE(regparse, regparse + l)) | |
| 7 | 2716 break; |
| 714 | 2717 regmbc(utf_ptr2char(regparse)); |
| 2718 skipchr(); | |
| 7 | 2719 } |
| 2720 } | |
| 2721 } | |
| 2722 else | |
| 2723 #endif | |
| 2724 regc(c); | |
| 2725 c = getchr(); | |
| 2726 } | |
| 2727 ungetchr(); | |
| 2728 | |
| 2729 regc(NUL); | |
| 2730 *flagp |= HASWIDTH; | |
| 2731 if (len == 1) | |
| 2732 *flagp |= SIMPLE; | |
| 2733 } | |
| 2734 break; | |
| 2735 } | |
| 2736 | |
| 2737 return ret; | |
| 2738 } | |
| 2739 | |
| 714 | 2740 #ifdef FEAT_MBYTE |
| 2741 /* | |
| 2742 * Return TRUE if MULTIBYTECODE should be used instead of EXACTLY for | |
| 2743 * character "c". | |
| 2744 */ | |
| 2745 static int | |
| 2746 use_multibytecode(c) | |
| 2747 int c; | |
| 2748 { | |
| 2749 return has_mbyte && (*mb_char2len)(c) > 1 | |
| 2750 && (re_multi_type(peekchr()) != NOT_MULTI | |
| 2751 || (enc_utf8 && utf_iscomposing(c))); | |
| 2752 } | |
| 2753 #endif | |
| 2754 | |
| 7 | 2755 /* |
| 4444 | 2756 * Emit a node. |
| 7 | 2757 * Return pointer to generated code. |
| 2758 */ | |
| 2759 static char_u * | |
| 2760 regnode(op) | |
| 2761 int op; | |
| 2762 { | |
| 2763 char_u *ret; | |
| 2764 | |
| 2765 ret = regcode; | |
| 2766 if (ret == JUST_CALC_SIZE) | |
| 2767 regsize += 3; | |
| 2768 else | |
| 2769 { | |
| 2770 *regcode++ = op; | |
| 2771 *regcode++ = NUL; /* Null "next" pointer. */ | |
| 2772 *regcode++ = NUL; | |
| 2773 } | |
| 2774 return ret; | |
| 2775 } | |
| 2776 | |
| 2777 /* | |
| 2778 * Emit (if appropriate) a byte of code | |
| 2779 */ | |
| 2780 static void | |
| 2781 regc(b) | |
| 2782 int b; | |
| 2783 { | |
| 2784 if (regcode == JUST_CALC_SIZE) | |
| 2785 regsize++; | |
| 2786 else | |
| 2787 *regcode++ = b; | |
| 2788 } | |
| 2789 | |
| 2790 #ifdef FEAT_MBYTE | |
| 2791 /* | |
| 2792 * Emit (if appropriate) a multi-byte character of code | |
| 2793 */ | |
| 2794 static void | |
| 2795 regmbc(c) | |
| 2796 int c; | |
| 2797 { | |
| 2974 | 2798 if (!has_mbyte && c > 0xff) |
| 2799 return; | |
| 7 | 2800 if (regcode == JUST_CALC_SIZE) |
| 2801 regsize += (*mb_char2len)(c); | |
| 2802 else | |
| 2803 regcode += (*mb_char2bytes)(c, regcode); | |
| 2804 } | |
| 2805 #endif | |
| 2806 | |
| 2807 /* | |
| 4444 | 2808 * Insert an operator in front of already-emitted operand |
| 7 | 2809 * |
| 2810 * Means relocating the operand. | |
| 2811 */ | |
| 2812 static void | |
| 2813 reginsert(op, opnd) | |
| 2814 int op; | |
| 2815 char_u *opnd; | |
| 2816 { | |
| 2817 char_u *src; | |
| 2818 char_u *dst; | |
| 2819 char_u *place; | |
| 2820 | |
| 2821 if (regcode == JUST_CALC_SIZE) | |
| 2822 { | |
| 2823 regsize += 3; | |
| 2824 return; | |
| 2825 } | |
| 2826 src = regcode; | |
| 2827 regcode += 3; | |
| 2828 dst = regcode; | |
| 2829 while (src > opnd) | |
| 2830 *--dst = *--src; | |
| 2831 | |
| 2832 place = opnd; /* Op node, where operand used to be. */ | |
| 2833 *place++ = op; | |
| 2834 *place++ = NUL; | |
| 2835 *place = NUL; | |
| 2836 } | |
| 2837 | |
| 2838 /* | |
| 4444 | 2839 * Insert an operator in front of already-emitted operand. |
|
4579
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2840 * Add a number to the operator. |
|
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|
2841 */ |
|
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|
2842 static void |
|
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|
2843 reginsert_nr(op, val, opnd) |
|
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|
2844 int op; |
|
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|
2845 long val; |
|
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|
2846 char_u *opnd; |
|
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|
2847 { |
|
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|
2848 char_u *src; |
|
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|
2849 char_u *dst; |
|
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|
2850 char_u *place; |
|
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|
2851 |
|
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|
2852 if (regcode == JUST_CALC_SIZE) |
|
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|
2853 { |
|
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|
2854 regsize += 7; |
|
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|
2855 return; |
|
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|
2856 } |
|
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|
2857 src = regcode; |
|
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|
2858 regcode += 7; |
|
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|
2859 dst = regcode; |
|
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|
2860 while (src > opnd) |
|
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|
2861 *--dst = *--src; |
|
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|
2862 |
|
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|
2863 place = opnd; /* Op node, where operand used to be. */ |
|
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|
2864 *place++ = op; |
|
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|
2865 *place++ = NUL; |
|
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|
2866 *place++ = NUL; |
|
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|
2867 place = re_put_long(place, (long_u)val); |
|
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|
2868 } |
|
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|
2869 |
|
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|
2870 /* |
|
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|
2871 * Insert an operator in front of already-emitted operand. |
| 7 | 2872 * The operator has the given limit values as operands. Also set next pointer. |
| 2873 * | |
| 2874 * Means relocating the operand. | |
| 2875 */ | |
| 2876 static void | |
| 2877 reginsert_limits(op, minval, maxval, opnd) | |
| 2878 int op; | |
| 2879 long minval; | |
| 2880 long maxval; | |
| 2881 char_u *opnd; | |
| 2882 { | |
| 2883 char_u *src; | |
| 2884 char_u *dst; | |
| 2885 char_u *place; | |
| 2886 | |
| 2887 if (regcode == JUST_CALC_SIZE) | |
| 2888 { | |
| 2889 regsize += 11; | |
| 2890 return; | |
| 2891 } | |
| 2892 src = regcode; | |
| 2893 regcode += 11; | |
| 2894 dst = regcode; | |
| 2895 while (src > opnd) | |
| 2896 *--dst = *--src; | |
| 2897 | |
| 2898 place = opnd; /* Op node, where operand used to be. */ | |
| 2899 *place++ = op; | |
| 2900 *place++ = NUL; | |
| 2901 *place++ = NUL; | |
| 2902 place = re_put_long(place, (long_u)minval); | |
| 2903 place = re_put_long(place, (long_u)maxval); | |
| 2904 regtail(opnd, place); | |
| 2905 } | |
| 2906 | |
| 2907 /* | |
| 2908 * Write a long as four bytes at "p" and return pointer to the next char. | |
| 2909 */ | |
| 2910 static char_u * | |
| 2911 re_put_long(p, val) | |
| 2912 char_u *p; | |
| 2913 long_u val; | |
| 2914 { | |
| 2915 *p++ = (char_u) ((val >> 24) & 0377); | |
| 2916 *p++ = (char_u) ((val >> 16) & 0377); | |
| 2917 *p++ = (char_u) ((val >> 8) & 0377); | |
| 2918 *p++ = (char_u) (val & 0377); | |
| 2919 return p; | |
| 2920 } | |
| 2921 | |
| 2922 /* | |
| 4444 | 2923 * Set the next-pointer at the end of a node chain. |
| 7 | 2924 */ |
| 2925 static void | |
| 2926 regtail(p, val) | |
| 2927 char_u *p; | |
| 2928 char_u *val; | |
| 2929 { | |
| 2930 char_u *scan; | |
| 2931 char_u *temp; | |
| 2932 int offset; | |
| 2933 | |
| 2934 if (p == JUST_CALC_SIZE) | |
| 2935 return; | |
| 2936 | |
| 2937 /* Find last node. */ | |
| 2938 scan = p; | |
| 2939 for (;;) | |
| 2940 { | |
| 2941 temp = regnext(scan); | |
| 2942 if (temp == NULL) | |
| 2943 break; | |
| 2944 scan = temp; | |
| 2945 } | |
| 2946 | |
| 233 | 2947 if (OP(scan) == BACK) |
| 7 | 2948 offset = (int)(scan - val); |
| 2949 else | |
| 2950 offset = (int)(val - scan); | |
| 2010 | 2951 /* When the offset uses more than 16 bits it can no longer fit in the two |
| 2974 | 2952 * bytes available. Use a global flag to avoid having to check return |
| 2010 | 2953 * values in too many places. */ |
| 2954 if (offset > 0xffff) | |
| 2955 reg_toolong = TRUE; | |
| 2956 else | |
| 2957 { | |
| 2958 *(scan + 1) = (char_u) (((unsigned)offset >> 8) & 0377); | |
| 2959 *(scan + 2) = (char_u) (offset & 0377); | |
| 2960 } | |
| 7 | 2961 } |
| 2962 | |
| 2963 /* | |
| 4444 | 2964 * Like regtail, on item after a BRANCH; nop if none. |
| 7 | 2965 */ |
| 2966 static void | |
| 2967 regoptail(p, val) | |
| 2968 char_u *p; | |
| 2969 char_u *val; | |
| 2970 { | |
| 2971 /* When op is neither BRANCH nor BRACE_COMPLEX0-9, it is "operandless" */ | |
| 2972 if (p == NULL || p == JUST_CALC_SIZE | |
| 2973 || (OP(p) != BRANCH | |
| 2974 && (OP(p) < BRACE_COMPLEX || OP(p) > BRACE_COMPLEX + 9))) | |
| 2975 return; | |
| 2976 regtail(OPERAND(p), val); | |
| 2977 } | |
| 2978 | |
| 2979 /* | |
| 4444 | 2980 * Functions for getting characters from the regexp input. |
| 7 | 2981 */ |
| 2982 | |
| 2983 static int at_start; /* True when on the first character */ | |
| 2984 static int prev_at_start; /* True when on the second character */ | |
| 2985 | |
| 4444 | 2986 /* |
| 2987 * Start parsing at "str". | |
| 2988 */ | |
| 7 | 2989 static void |
| 2990 initchr(str) | |
| 2991 char_u *str; | |
| 2992 { | |
| 2993 regparse = str; | |
| 2994 prevchr_len = 0; | |
| 2995 curchr = prevprevchr = prevchr = nextchr = -1; | |
| 2996 at_start = TRUE; | |
| 2997 prev_at_start = FALSE; | |
| 2998 } | |
| 2999 | |
| 4444 | 3000 /* |
|
4679
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|
3001 * Save the current parse state, so that it can be restored and parsing |
|
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|
3002 * starts in the same state again. |
|
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|
3003 */ |
|
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|
3004 static void |
|
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|
3005 save_parse_state(ps) |
|
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|
3006 parse_state_T *ps; |
|
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|
3007 { |
|
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|
3008 ps->regparse = regparse; |
|
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3009 ps->prevchr_len = prevchr_len; |
|
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|
3010 ps->curchr = curchr; |
|
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|
3011 ps->prevchr = prevchr; |
|
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3012 ps->prevprevchr = prevprevchr; |
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3013 ps->nextchr = nextchr; |
|
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|
3014 ps->at_start = at_start; |
|
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|
3015 ps->prev_at_start = prev_at_start; |
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|
3016 ps->regnpar = regnpar; |
|
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3017 } |
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3018 |
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3019 /* |
|
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|
3020 * Restore a previously saved parse state. |
|
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3021 */ |
|
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|
3022 static void |
|
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3023 restore_parse_state(ps) |
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3024 parse_state_T *ps; |
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3025 { |
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3026 regparse = ps->regparse; |
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3027 prevchr_len = ps->prevchr_len; |
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3028 curchr = ps->curchr; |
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3029 prevchr = ps->prevchr; |
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3030 prevprevchr = ps->prevprevchr; |
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3031 nextchr = ps->nextchr; |
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3032 at_start = ps->at_start; |
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3033 prev_at_start = ps->prev_at_start; |
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3034 regnpar = ps->regnpar; |
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3035 } |
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3036 |
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3037 |
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3038 /* |
| 4444 | 3039 * Get the next character without advancing. |
| 3040 */ | |
| 7 | 3041 static int |
| 3042 peekchr() | |
| 3043 { | |
| 167 | 3044 static int after_slash = FALSE; |
| 3045 | |
| 7 | 3046 if (curchr == -1) |
| 3047 { | |
| 3048 switch (curchr = regparse[0]) | |
| 3049 { | |
| 3050 case '.': | |
| 3051 case '[': | |
| 3052 case '~': | |
| 3053 /* magic when 'magic' is on */ | |
| 3054 if (reg_magic >= MAGIC_ON) | |
| 3055 curchr = Magic(curchr); | |
| 3056 break; | |
| 3057 case '(': | |
| 3058 case ')': | |
| 3059 case '{': | |
| 3060 case '%': | |
| 3061 case '+': | |
| 3062 case '=': | |
| 3063 case '?': | |
| 3064 case '@': | |
| 3065 case '!': | |
| 3066 case '&': | |
| 3067 case '|': | |
| 3068 case '<': | |
| 3069 case '>': | |
| 3070 case '#': /* future ext. */ | |
| 3071 case '"': /* future ext. */ | |
| 3072 case '\'': /* future ext. */ | |
| 3073 case ',': /* future ext. */ | |
| 3074 case '-': /* future ext. */ | |
| 3075 case ':': /* future ext. */ | |
| 3076 case ';': /* future ext. */ | |
| 3077 case '`': /* future ext. */ | |
| 3078 case '/': /* Can't be used in / command */ | |
| 3079 /* magic only after "\v" */ | |
| 3080 if (reg_magic == MAGIC_ALL) | |
| 3081 curchr = Magic(curchr); | |
| 3082 break; | |
| 3083 case '*': | |
| 167 | 3084 /* * is not magic as the very first character, eg "?*ptr", when |
| 3085 * after '^', eg "/^*ptr" and when after "\(", "\|", "\&". But | |
| 3086 * "\(\*" is not magic, thus must be magic if "after_slash" */ | |
| 3087 if (reg_magic >= MAGIC_ON | |
| 3088 && !at_start | |
| 3089 && !(prev_at_start && prevchr == Magic('^')) | |
| 3090 && (after_slash | |
| 3091 || (prevchr != Magic('(') | |
| 3092 && prevchr != Magic('&') | |
| 3093 && prevchr != Magic('|')))) | |
| 7 | 3094 curchr = Magic('*'); |
| 3095 break; | |
| 3096 case '^': | |
| 3097 /* '^' is only magic as the very first character and if it's after | |
| 3098 * "\(", "\|", "\&' or "\n" */ | |
| 3099 if (reg_magic >= MAGIC_OFF | |
| 3100 && (at_start | |
| 3101 || reg_magic == MAGIC_ALL | |
| 3102 || prevchr == Magic('(') | |
| 3103 || prevchr == Magic('|') | |
| 3104 || prevchr == Magic('&') | |
| 3105 || prevchr == Magic('n') | |
| 3106 || (no_Magic(prevchr) == '(' | |
| 3107 && prevprevchr == Magic('%')))) | |
| 3108 { | |
| 3109 curchr = Magic('^'); | |
| 3110 at_start = TRUE; | |
| 3111 prev_at_start = FALSE; | |
| 3112 } | |
| 3113 break; | |
| 3114 case '$': | |
| 3115 /* '$' is only magic as the very last char and if it's in front of | |
| 3116 * either "\|", "\)", "\&", or "\n" */ | |
| 3117 if (reg_magic >= MAGIC_OFF) | |
| 3118 { | |
| 3119 char_u *p = regparse + 1; | |
| 6041 | 3120 int is_magic_all = (reg_magic == MAGIC_ALL); |
| 3121 | |
| 3122 /* ignore \c \C \m \M \v \V and \Z after '$' */ | |
| 7 | 3123 while (p[0] == '\\' && (p[1] == 'c' || p[1] == 'C' |
| 6041 | 3124 || p[1] == 'm' || p[1] == 'M' |
| 3125 || p[1] == 'v' || p[1] == 'V' || p[1] == 'Z')) | |
| 3126 { | |
| 3127 if (p[1] == 'v') | |
| 3128 is_magic_all = TRUE; | |
| 3129 else if (p[1] == 'm' || p[1] == 'M' || p[1] == 'V') | |
| 3130 is_magic_all = FALSE; | |
| 7 | 3131 p += 2; |
| 6041 | 3132 } |
| 7 | 3133 if (p[0] == NUL |
| 3134 || (p[0] == '\\' | |
| 3135 && (p[1] == '|' || p[1] == '&' || p[1] == ')' | |
| 3136 || p[1] == 'n')) | |
| 6041 | 3137 || (is_magic_all |
| 3138 && (p[0] == '|' || p[0] == '&' || p[0] == ')')) | |
| 7 | 3139 || reg_magic == MAGIC_ALL) |
| 3140 curchr = Magic('$'); | |
| 3141 } | |
| 3142 break; | |
| 3143 case '\\': | |
| 3144 { | |
| 3145 int c = regparse[1]; | |
| 3146 | |
| 3147 if (c == NUL) | |
| 3148 curchr = '\\'; /* trailing '\' */ | |
| 3149 else if ( | |
| 3150 #ifdef EBCDIC | |
| 3151 vim_strchr(META, c) | |
| 3152 #else | |
| 3153 c <= '~' && META_flags[c] | |
| 3154 #endif | |
| 3155 ) | |
| 3156 { | |
| 3157 /* | |
| 3158 * META contains everything that may be magic sometimes, | |
| 3159 * except ^ and $ ("\^" and "\$" are only magic after | |
| 6830 | 3160 * "\V"). We now fetch the next character and toggle its |
| 7 | 3161 * magicness. Therefore, \ is so meta-magic that it is |
| 3162 * not in META. | |
| 3163 */ | |
| 3164 curchr = -1; | |
| 3165 prev_at_start = at_start; | |
| 3166 at_start = FALSE; /* be able to say "/\*ptr" */ | |
| 3167 ++regparse; | |
| 167 | 3168 ++after_slash; |
| 7 | 3169 peekchr(); |
| 3170 --regparse; | |
| 167 | 3171 --after_slash; |
| 7 | 3172 curchr = toggle_Magic(curchr); |
| 3173 } | |
| 3174 else if (vim_strchr(REGEXP_ABBR, c)) | |
| 3175 { | |
| 3176 /* | |
| 3177 * Handle abbreviations, like "\t" for TAB -- webb | |
| 3178 */ | |
| 3179 curchr = backslash_trans(c); | |
| 3180 } | |
| 3181 else if (reg_magic == MAGIC_NONE && (c == '$' || c == '^')) | |
| 3182 curchr = toggle_Magic(c); | |
| 3183 else | |
| 3184 { | |
| 3185 /* | |
| 3186 * Next character can never be (made) magic? | |
| 3187 * Then backslashing it won't do anything. | |
| 3188 */ | |
| 3189 #ifdef FEAT_MBYTE | |
| 3190 if (has_mbyte) | |
| 3191 curchr = (*mb_ptr2char)(regparse + 1); | |
| 3192 else | |
| 3193 #endif | |
| 3194 curchr = c; | |
| 3195 } | |
| 3196 break; | |
| 3197 } | |
| 3198 | |
| 3199 #ifdef FEAT_MBYTE | |
| 3200 default: | |
| 3201 if (has_mbyte) | |
| 3202 curchr = (*mb_ptr2char)(regparse); | |
| 3203 #endif | |
| 3204 } | |
| 3205 } | |
| 3206 | |
| 3207 return curchr; | |
| 3208 } | |
| 3209 | |
| 3210 /* | |
| 3211 * Eat one lexed character. Do this in a way that we can undo it. | |
| 3212 */ | |
| 3213 static void | |
| 3214 skipchr() | |
| 3215 { | |
| 3216 /* peekchr() eats a backslash, do the same here */ | |
| 3217 if (*regparse == '\\') | |
| 3218 prevchr_len = 1; | |
| 3219 else | |
| 3220 prevchr_len = 0; | |
| 3221 if (regparse[prevchr_len] != NUL) | |
| 3222 { | |
| 3223 #ifdef FEAT_MBYTE | |
| 714 | 3224 if (enc_utf8) |
| 1449 | 3225 /* exclude composing chars that mb_ptr2len does include */ |
| 3226 prevchr_len += utf_ptr2len(regparse + prevchr_len); | |
| 714 | 3227 else if (has_mbyte) |
| 474 | 3228 prevchr_len += (*mb_ptr2len)(regparse + prevchr_len); |
| 7 | 3229 else |
| 3230 #endif | |
| 3231 ++prevchr_len; | |
| 3232 } | |
| 3233 regparse += prevchr_len; | |
| 3234 prev_at_start = at_start; | |
| 3235 at_start = FALSE; | |
| 3236 prevprevchr = prevchr; | |
| 3237 prevchr = curchr; | |
| 3238 curchr = nextchr; /* use previously unget char, or -1 */ | |
| 3239 nextchr = -1; | |
| 3240 } | |
| 3241 | |
| 3242 /* | |
| 3243 * Skip a character while keeping the value of prev_at_start for at_start. | |
| 3244 * prevchr and prevprevchr are also kept. | |
| 3245 */ | |
| 3246 static void | |
| 3247 skipchr_keepstart() | |
| 3248 { | |
| 3249 int as = prev_at_start; | |
| 3250 int pr = prevchr; | |
| 3251 int prpr = prevprevchr; | |
| 3252 | |
| 3253 skipchr(); | |
| 3254 at_start = as; | |
| 3255 prevchr = pr; | |
| 3256 prevprevchr = prpr; | |
| 3257 } | |
| 3258 | |
| 4444 | 3259 /* |
| 3260 * Get the next character from the pattern. We know about magic and such, so | |
| 3261 * therefore we need a lexical analyzer. | |
| 3262 */ | |
| 7 | 3263 static int |
| 3264 getchr() | |
| 3265 { | |
| 3266 int chr = peekchr(); | |
| 3267 | |
| 3268 skipchr(); | |
| 3269 return chr; | |
| 3270 } | |
| 3271 | |
| 3272 /* | |
| 3273 * put character back. Works only once! | |
| 3274 */ | |
| 3275 static void | |
| 3276 ungetchr() | |
| 3277 { | |
| 3278 nextchr = curchr; | |
| 3279 curchr = prevchr; | |
| 3280 prevchr = prevprevchr; | |
| 3281 at_start = prev_at_start; | |
| 3282 prev_at_start = FALSE; | |
| 3283 | |
| 3284 /* Backup regparse, so that it's at the same position as before the | |
| 3285 * getchr(). */ | |
| 3286 regparse -= prevchr_len; | |
| 3287 } | |
| 3288 | |
| 3289 /* | |
| 29 | 3290 * Get and return the value of the hex string at the current position. |
| 3291 * Return -1 if there is no valid hex number. | |
| 3292 * The position is updated: | |
| 24 | 3293 * blahblah\%x20asdf |
| 856 | 3294 * before-^ ^-after |
| 24 | 3295 * The parameter controls the maximum number of input characters. This will be |
| 3296 * 2 when reading a \%x20 sequence and 4 when reading a \%u20AC sequence. | |
| 3297 */ | |
| 3298 static int | |
| 3299 gethexchrs(maxinputlen) | |
| 3300 int maxinputlen; | |
| 3301 { | |
| 3302 int nr = 0; | |
| 3303 int c; | |
| 3304 int i; | |
| 3305 | |
| 3306 for (i = 0; i < maxinputlen; ++i) | |
| 3307 { | |
| 3308 c = regparse[0]; | |
| 3309 if (!vim_isxdigit(c)) | |
| 3310 break; | |
| 3311 nr <<= 4; | |
| 3312 nr |= hex2nr(c); | |
| 3313 ++regparse; | |
| 3314 } | |
| 3315 | |
| 3316 if (i == 0) | |
| 3317 return -1; | |
| 3318 return nr; | |
| 3319 } | |
| 3320 | |
| 3321 /* | |
|
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3322 * Get and return the value of the decimal string immediately after the |
| 24 | 3323 * current position. Return -1 for invalid. Consumes all digits. |
| 3324 */ | |
| 3325 static int | |
| 3326 getdecchrs() | |
| 3327 { | |
| 3328 int nr = 0; | |
| 3329 int c; | |
| 3330 int i; | |
| 3331 | |
| 3332 for (i = 0; ; ++i) | |
| 3333 { | |
| 3334 c = regparse[0]; | |
| 3335 if (c < '0' || c > '9') | |
| 3336 break; | |
| 3337 nr *= 10; | |
| 3338 nr += c - '0'; | |
| 3339 ++regparse; | |
|
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|
3340 curchr = -1; /* no longer valid */ |
| 24 | 3341 } |
| 3342 | |
| 3343 if (i == 0) | |
| 3344 return -1; | |
| 3345 return nr; | |
| 3346 } | |
| 3347 | |
| 3348 /* | |
| 3349 * get and return the value of the octal string immediately after the current | |
| 3350 * position. Return -1 for invalid, or 0-255 for valid. Smart enough to handle | |
| 3351 * numbers > 377 correctly (for example, 400 is treated as 40) and doesn't | |
| 3352 * treat 8 or 9 as recognised characters. Position is updated: | |
| 3353 * blahblah\%o210asdf | |
| 856 | 3354 * before-^ ^-after |
| 24 | 3355 */ |
| 3356 static int | |
| 3357 getoctchrs() | |
| 3358 { | |
| 3359 int nr = 0; | |
| 3360 int c; | |
| 3361 int i; | |
| 3362 | |
| 3363 for (i = 0; i < 3 && nr < 040; ++i) | |
| 3364 { | |
| 3365 c = regparse[0]; | |
| 3366 if (c < '0' || c > '7') | |
| 3367 break; | |
| 3368 nr <<= 3; | |
| 3369 nr |= hex2nr(c); | |
| 3370 ++regparse; | |
| 3371 } | |
| 3372 | |
| 3373 if (i == 0) | |
| 3374 return -1; | |
| 3375 return nr; | |
| 3376 } | |
| 3377 | |
| 3378 /* | |
| 3379 * Get a number after a backslash that is inside []. | |
| 3380 * When nothing is recognized return a backslash. | |
| 3381 */ | |
| 3382 static int | |
| 3383 coll_get_char() | |
| 3384 { | |
| 3385 int nr = -1; | |
| 3386 | |
| 3387 switch (*regparse++) | |
| 3388 { | |
| 3389 case 'd': nr = getdecchrs(); break; | |
| 3390 case 'o': nr = getoctchrs(); break; | |
| 3391 case 'x': nr = gethexchrs(2); break; | |
| 3392 case 'u': nr = gethexchrs(4); break; | |
| 3393 case 'U': nr = gethexchrs(8); break; | |
| 3394 } | |
| 3395 if (nr < 0) | |
| 3396 { | |
| 3397 /* If getting the number fails be backwards compatible: the character | |
| 3398 * is a backslash. */ | |
| 3399 --regparse; | |
| 3400 nr = '\\'; | |
| 3401 } | |
| 3402 return nr; | |
| 3403 } | |
| 3404 | |
| 3405 /* | |
| 7 | 3406 * read_limits - Read two integers to be taken as a minimum and maximum. |
| 3407 * If the first character is '-', then the range is reversed. | |
| 3408 * Should end with 'end'. If minval is missing, zero is default, if maxval is | |
| 3409 * missing, a very big number is the default. | |
| 3410 */ | |
| 3411 static int | |
| 3412 read_limits(minval, maxval) | |
| 3413 long *minval; | |
| 3414 long *maxval; | |
| 3415 { | |
| 3416 int reverse = FALSE; | |
| 3417 char_u *first_char; | |
| 3418 long tmp; | |
| 3419 | |
| 3420 if (*regparse == '-') | |
| 3421 { | |
| 3422 /* Starts with '-', so reverse the range later */ | |
| 3423 regparse++; | |
| 3424 reverse = TRUE; | |
| 3425 } | |
| 3426 first_char = regparse; | |
| 3427 *minval = getdigits(®parse); | |
| 3428 if (*regparse == ',') /* There is a comma */ | |
| 3429 { | |
| 3430 if (vim_isdigit(*++regparse)) | |
| 3431 *maxval = getdigits(®parse); | |
| 3432 else | |
| 3433 *maxval = MAX_LIMIT; | |
| 3434 } | |
| 3435 else if (VIM_ISDIGIT(*first_char)) | |
| 3436 *maxval = *minval; /* It was \{n} or \{-n} */ | |
| 3437 else | |
| 3438 *maxval = MAX_LIMIT; /* It was \{} or \{-} */ | |
| 3439 if (*regparse == '\\') | |
| 3440 regparse++; /* Allow either \{...} or \{...\} */ | |
| 167 | 3441 if (*regparse != '}') |
| 7 | 3442 { |
| 3443 sprintf((char *)IObuff, _("E554: Syntax error in %s{...}"), | |
| 3444 reg_magic == MAGIC_ALL ? "" : "\\"); | |
| 3445 EMSG_RET_FAIL(IObuff); | |
| 3446 } | |
| 3447 | |
| 3448 /* | |
| 3449 * Reverse the range if there was a '-', or make sure it is in the right | |
| 3450 * order otherwise. | |
| 3451 */ | |
| 3452 if ((!reverse && *minval > *maxval) || (reverse && *minval < *maxval)) | |
| 3453 { | |
| 3454 tmp = *minval; | |
| 3455 *minval = *maxval; | |
| 3456 *maxval = tmp; | |
| 3457 } | |
| 3458 skipchr(); /* let's be friends with the lexer again */ | |
| 3459 return OK; | |
| 3460 } | |
| 3461 | |
| 3462 /* | |
| 3463 * vim_regexec and friends | |
| 3464 */ | |
| 3465 | |
| 3466 /* | |
| 3467 * Global work variables for vim_regexec(). | |
| 3468 */ | |
| 3469 | |
| 3470 /* The current match-position is remembered with these variables: */ | |
| 3471 static linenr_T reglnum; /* line number, relative to first line */ | |
| 3472 static char_u *regline; /* start of current line */ | |
| 3473 static char_u *reginput; /* current input, points into "regline" */ | |
| 3474 | |
| 3475 static int need_clear_subexpr; /* subexpressions still need to be | |
| 3476 * cleared */ | |
| 3477 #ifdef FEAT_SYN_HL | |
| 3478 static int need_clear_zsubexpr = FALSE; /* extmatch subexpressions | |
| 3479 * still need to be cleared */ | |
| 3480 #endif | |
| 3481 | |
| 3482 /* | |
| 3483 * Structure used to save the current input state, when it needs to be | |
| 3484 * restored after trying a match. Used by reg_save() and reg_restore(). | |
| 233 | 3485 * Also stores the length of "backpos". |
| 7 | 3486 */ |
| 3487 typedef struct | |
| 3488 { | |
| 3489 union | |
| 3490 { | |
| 3491 char_u *ptr; /* reginput pointer, for single-line regexp */ | |
| 3492 lpos_T pos; /* reginput pos, for multi-line regexp */ | |
| 3493 } rs_u; | |
| 233 | 3494 int rs_len; |
| 7 | 3495 } regsave_T; |
| 3496 | |
| 3497 /* struct to save start/end pointer/position in for \(\) */ | |
| 3498 typedef struct | |
| 3499 { | |
| 3500 union | |
| 3501 { | |
| 3502 char_u *ptr; | |
| 3503 lpos_T pos; | |
| 3504 } se_u; | |
| 3505 } save_se_T; | |
| 3506 | |
| 1579 | 3507 /* used for BEHIND and NOBEHIND matching */ |
| 3508 typedef struct regbehind_S | |
| 3509 { | |
| 3510 regsave_T save_after; | |
| 3511 regsave_T save_behind; | |
| 1602 | 3512 int save_need_clear_subexpr; |
| 1579 | 3513 save_se_T save_start[NSUBEXP]; |
| 3514 save_se_T save_end[NSUBEXP]; | |
| 3515 } regbehind_T; | |
| 3516 | |
| 7 | 3517 static char_u *reg_getline __ARGS((linenr_T lnum)); |
| 4444 | 3518 static long bt_regexec_both __ARGS((char_u *line, colnr_T col, proftime_T *tm)); |
| 3519 static long regtry __ARGS((bt_regprog_T *prog, colnr_T col)); | |
| 7 | 3520 static void cleanup_subexpr __ARGS((void)); |
| 3521 #ifdef FEAT_SYN_HL | |
| 3522 static void cleanup_zsubexpr __ARGS((void)); | |
| 3523 #endif | |
| 1579 | 3524 static void save_subexpr __ARGS((regbehind_T *bp)); |
| 3525 static void restore_subexpr __ARGS((regbehind_T *bp)); | |
| 7 | 3526 static void reg_nextline __ARGS((void)); |
| 233 | 3527 static void reg_save __ARGS((regsave_T *save, garray_T *gap)); |
| 3528 static void reg_restore __ARGS((regsave_T *save, garray_T *gap)); | |
| 7 | 3529 static int reg_save_equal __ARGS((regsave_T *save)); |
| 3530 static void save_se_multi __ARGS((save_se_T *savep, lpos_T *posp)); | |
| 3531 static void save_se_one __ARGS((save_se_T *savep, char_u **pp)); | |
| 3532 | |
| 3533 /* Save the sub-expressions before attempting a match. */ | |
| 3534 #define save_se(savep, posp, pp) \ | |
| 3535 REG_MULTI ? save_se_multi((savep), (posp)) : save_se_one((savep), (pp)) | |
| 3536 | |
| 3537 /* After a failed match restore the sub-expressions. */ | |
| 3538 #define restore_se(savep, posp, pp) { \ | |
| 3539 if (REG_MULTI) \ | |
| 3540 *(posp) = (savep)->se_u.pos; \ | |
| 3541 else \ | |
| 3542 *(pp) = (savep)->se_u.ptr; } | |
| 3543 | |
| 3544 static int re_num_cmp __ARGS((long_u val, char_u *scan)); | |
|
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
3545 static int match_with_backref __ARGS((linenr_T start_lnum, colnr_T start_col, linenr_T end_lnum, colnr_T end_col, int *bytelen)); |
| 180 | 3546 static int regmatch __ARGS((char_u *prog)); |
| 7 | 3547 static int regrepeat __ARGS((char_u *p, long maxcount)); |
| 3548 | |
| 3549 #ifdef DEBUG | |
| 3550 int regnarrate = 0; | |
| 3551 #endif | |
| 3552 | |
| 3553 /* | |
| 3554 * Internal copy of 'ignorecase'. It is set at each call to vim_regexec(). | |
| 3555 * Normally it gets the value of "rm_ic" or "rmm_ic", but when the pattern | |
| 3556 * contains '\c' or '\C' the value is overruled. | |
| 3557 */ | |
| 3558 static int ireg_ic; | |
| 3559 | |
| 3560 #ifdef FEAT_MBYTE | |
| 3561 /* | |
| 3562 * Similar to ireg_ic, but only for 'combining' characters. Set with \Z flag | |
| 3563 * in the regexp. Defaults to false, always. | |
| 3564 */ | |
| 3565 static int ireg_icombine; | |
| 3566 #endif | |
| 3567 | |
| 3568 /* | |
| 410 | 3569 * Copy of "rmm_maxcol": maximum column to search for a match. Zero when |
| 3570 * there is no maximum. | |
| 3571 */ | |
| 418 | 3572 static colnr_T ireg_maxcol; |
| 410 | 3573 |
| 3574 /* | |
| 7 | 3575 * Sometimes need to save a copy of a line. Since alloc()/free() is very |
| 3576 * slow, we keep one allocated piece of memory and only re-allocate it when | |
| 4444 | 3577 * it's too small. It's freed in bt_regexec_both() when finished. |
| 7 | 3578 */ |
| 1468 | 3579 static char_u *reg_tofree = NULL; |
| 7 | 3580 static unsigned reg_tofreelen; |
| 3581 | |
| 3582 /* | |
| 3583 * These variables are set when executing a regexp to speed up the execution. | |
| 1209 | 3584 * Which ones are set depends on whether a single-line or multi-line match is |
| 7 | 3585 * done: |
| 3586 * single-line multi-line | |
| 3587 * reg_match ®match_T NULL | |
| 3588 * reg_mmatch NULL ®mmatch_T | |
| 3589 * reg_startp reg_match->startp <invalid> | |
| 3590 * reg_endp reg_match->endp <invalid> | |
| 3591 * reg_startpos <invalid> reg_mmatch->startpos | |
| 3592 * reg_endpos <invalid> reg_mmatch->endpos | |
| 3593 * reg_win NULL window in which to search | |
| 4061 | 3594 * reg_buf curbuf buffer in which to search |
| 7 | 3595 * reg_firstlnum <invalid> first line in which to search |
| 3596 * reg_maxline 0 last line nr | |
| 3597 * reg_line_lbr FALSE or TRUE FALSE | |
| 3598 */ | |
| 3599 static regmatch_T *reg_match; | |
| 3600 static regmmatch_T *reg_mmatch; | |
| 3601 static char_u **reg_startp = NULL; | |
| 3602 static char_u **reg_endp = NULL; | |
| 3603 static lpos_T *reg_startpos = NULL; | |
| 3604 static lpos_T *reg_endpos = NULL; | |
| 3605 static win_T *reg_win; | |
| 3606 static buf_T *reg_buf; | |
| 3607 static linenr_T reg_firstlnum; | |
| 3608 static linenr_T reg_maxline; | |
| 3609 static int reg_line_lbr; /* "\n" in string is line break */ | |
| 3610 | |
| 270 | 3611 /* Values for rs_state in regitem_T. */ |
| 3612 typedef enum regstate_E | |
| 3613 { | |
| 3614 RS_NOPEN = 0 /* NOPEN and NCLOSE */ | |
| 3615 , RS_MOPEN /* MOPEN + [0-9] */ | |
| 3616 , RS_MCLOSE /* MCLOSE + [0-9] */ | |
| 3617 #ifdef FEAT_SYN_HL | |
| 3618 , RS_ZOPEN /* ZOPEN + [0-9] */ | |
| 3619 , RS_ZCLOSE /* ZCLOSE + [0-9] */ | |
| 3620 #endif | |
| 3621 , RS_BRANCH /* BRANCH */ | |
| 3622 , RS_BRCPLX_MORE /* BRACE_COMPLEX and trying one more match */ | |
| 3623 , RS_BRCPLX_LONG /* BRACE_COMPLEX and trying longest match */ | |
| 3624 , RS_BRCPLX_SHORT /* BRACE_COMPLEX and trying shortest match */ | |
| 3625 , RS_NOMATCH /* NOMATCH */ | |
| 3626 , RS_BEHIND1 /* BEHIND / NOBEHIND matching rest */ | |
| 3627 , RS_BEHIND2 /* BEHIND / NOBEHIND matching behind part */ | |
| 3628 , RS_STAR_LONG /* STAR/PLUS/BRACE_SIMPLE longest match */ | |
| 3629 , RS_STAR_SHORT /* STAR/PLUS/BRACE_SIMPLE shortest match */ | |
| 3630 } regstate_T; | |
| 3631 | |
| 3632 /* | |
| 3633 * When there are alternatives a regstate_T is put on the regstack to remember | |
| 3634 * what we are doing. | |
| 3635 * Before it may be another type of item, depending on rs_state, to remember | |
| 3636 * more things. | |
| 3637 */ | |
| 3638 typedef struct regitem_S | |
| 3639 { | |
| 3640 regstate_T rs_state; /* what we are doing, one of RS_ above */ | |
| 3641 char_u *rs_scan; /* current node in program */ | |
| 3642 union | |
| 3643 { | |
| 3644 save_se_T sesave; | |
| 3645 regsave_T regsave; | |
| 3646 } rs_un; /* room for saving reginput */ | |
| 1579 | 3647 short rs_no; /* submatch nr or BEHIND/NOBEHIND */ |
| 270 | 3648 } regitem_T; |
| 3649 | |
| 3650 static regitem_T *regstack_push __ARGS((regstate_T state, char_u *scan)); | |
| 3651 static void regstack_pop __ARGS((char_u **scan)); | |
| 3652 | |
| 3653 /* used for STAR, PLUS and BRACE_SIMPLE matching */ | |
| 3654 typedef struct regstar_S | |
| 3655 { | |
| 3656 int nextb; /* next byte */ | |
| 3657 int nextb_ic; /* next byte reverse case */ | |
| 3658 long count; | |
| 3659 long minval; | |
| 3660 long maxval; | |
| 3661 } regstar_T; | |
| 3662 | |
| 3663 /* used to store input position when a BACK was encountered, so that we now if | |
| 3664 * we made any progress since the last time. */ | |
| 3665 typedef struct backpos_S | |
| 3666 { | |
| 3667 char_u *bp_scan; /* "scan" where BACK was encountered */ | |
| 3668 regsave_T bp_pos; /* last input position */ | |
| 3669 } backpos_T; | |
| 3670 | |
| 3671 /* | |
| 1520 | 3672 * "regstack" and "backpos" are used by regmatch(). They are kept over calls |
| 3673 * to avoid invoking malloc() and free() often. | |
| 3674 * "regstack" is a stack with regitem_T items, sometimes preceded by regstar_T | |
| 3675 * or regbehind_T. | |
| 3676 * "backpos_T" is a table with backpos_T for BACK | |
| 270 | 3677 */ |
| 1520 | 3678 static garray_T regstack = {0, 0, 0, 0, NULL}; |
| 3679 static garray_T backpos = {0, 0, 0, 0, NULL}; | |
| 3680 | |
| 3681 /* | |
| 3682 * Both for regstack and backpos tables we use the following strategy of | |
| 3683 * allocation (to reduce malloc/free calls): | |
| 3684 * - Initial size is fairly small. | |
| 3685 * - When needed, the tables are grown bigger (8 times at first, double after | |
| 3686 * that). | |
| 3687 * - After executing the match we free the memory only if the array has grown. | |
| 3688 * Thus the memory is kept allocated when it's at the initial size. | |
| 3689 * This makes it fast while not keeping a lot of memory allocated. | |
| 3690 * A three times speed increase was observed when using many simple patterns. | |
| 3691 */ | |
| 3692 #define REGSTACK_INITIAL 2048 | |
| 3693 #define BACKPOS_INITIAL 64 | |
| 3694 | |
| 3695 #if defined(EXITFREE) || defined(PROTO) | |
| 3696 void | |
| 3697 free_regexp_stuff() | |
| 3698 { | |
| 3699 ga_clear(®stack); | |
| 3700 ga_clear(&backpos); | |
| 3701 vim_free(reg_tofree); | |
| 3702 vim_free(reg_prev_sub); | |
| 3703 } | |
| 3704 #endif | |
| 270 | 3705 |
| 7 | 3706 /* |
| 3707 * Get pointer to the line "lnum", which is relative to "reg_firstlnum". | |
| 3708 */ | |
| 3709 static char_u * | |
| 3710 reg_getline(lnum) | |
| 3711 linenr_T lnum; | |
| 3712 { | |
| 3713 /* when looking behind for a match/no-match lnum is negative. But we | |
| 3714 * can't go before line 1 */ | |
| 3715 if (reg_firstlnum + lnum < 1) | |
| 3716 return NULL; | |
| 482 | 3717 if (lnum > reg_maxline) |
| 481 | 3718 /* Must have matched the "\n" in the last line. */ |
| 3719 return (char_u *)""; | |
| 7 | 3720 return ml_get_buf(reg_buf, reg_firstlnum + lnum, FALSE); |
| 3721 } | |
| 3722 | |
| 3723 static regsave_T behind_pos; | |
| 3724 | |
| 3725 #ifdef FEAT_SYN_HL | |
| 3726 static char_u *reg_startzp[NSUBEXP]; /* Workspace to mark beginning */ | |
| 3727 static char_u *reg_endzp[NSUBEXP]; /* and end of \z(...\) matches */ | |
| 3728 static lpos_T reg_startzpos[NSUBEXP]; /* idem, beginning pos */ | |
| 3729 static lpos_T reg_endzpos[NSUBEXP]; /* idem, end pos */ | |
| 3730 #endif | |
| 3731 | |
| 3732 /* TRUE if using multi-line regexp. */ | |
| 3733 #define REG_MULTI (reg_match == NULL) | |
| 3734 | |
| 5838 | 3735 static int bt_regexec_nl __ARGS((regmatch_T *rmp, char_u *line, colnr_T col, int line_lbr)); |
| 3736 | |
| 4444 | 3737 |
| 7 | 3738 /* |
| 3739 * Match a regexp against a string. | |
| 3740 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 3741 * Uses curbuf for line count and 'iskeyword'. | |
| 5838 | 3742 * if "line_lbr" is TRUE consider a "\n" in "line" to be a line break. |
| 7 | 3743 * |
| 6390 | 3744 * Returns 0 for failure, number of lines contained in the match otherwise. |
| 7 | 3745 */ |
| 4444 | 3746 static int |
| 5838 | 3747 bt_regexec_nl(rmp, line, col, line_lbr) |
| 7 | 3748 regmatch_T *rmp; |
| 3749 char_u *line; /* string to match against */ | |
| 3750 colnr_T col; /* column to start looking for match */ | |
| 5838 | 3751 int line_lbr; |
| 7 | 3752 { |
| 3753 reg_match = rmp; | |
| 3754 reg_mmatch = NULL; | |
| 3755 reg_maxline = 0; | |
| 5838 | 3756 reg_line_lbr = line_lbr; |
| 4061 | 3757 reg_buf = curbuf; |
| 7 | 3758 reg_win = NULL; |
| 3759 ireg_ic = rmp->rm_ic; | |
| 3760 #ifdef FEAT_MBYTE | |
| 3761 ireg_icombine = FALSE; | |
| 3762 #endif | |
| 410 | 3763 ireg_maxcol = 0; |
| 6390 | 3764 |
| 3765 return bt_regexec_both(line, col, NULL); | |
| 7 | 3766 } |
| 3767 | |
| 4444 | 3768 static long bt_regexec_multi __ARGS((regmmatch_T *rmp, win_T *win, buf_T *buf, linenr_T lnum, colnr_T col, proftime_T *tm)); |
| 3769 | |
| 7 | 3770 /* |
| 3771 * Match a regexp against multiple lines. | |
| 3772 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 3773 * Uses curbuf for line count and 'iskeyword'. | |
| 3774 * | |
| 3775 * Return zero if there is no match. Return number of lines contained in the | |
| 3776 * match otherwise. | |
| 3777 */ | |
| 4444 | 3778 static long |
| 3779 bt_regexec_multi(rmp, win, buf, lnum, col, tm) | |
| 7 | 3780 regmmatch_T *rmp; |
| 3781 win_T *win; /* window in which to search or NULL */ | |
| 3782 buf_T *buf; /* buffer in which to search */ | |
| 3783 linenr_T lnum; /* nr of line to start looking for match */ | |
| 3784 colnr_T col; /* column to start looking for match */ | |
| 1521 | 3785 proftime_T *tm; /* timeout limit or NULL */ |
| 7 | 3786 { |
| 3787 reg_match = NULL; | |
| 3788 reg_mmatch = rmp; | |
| 3789 reg_buf = buf; | |
| 3790 reg_win = win; | |
| 3791 reg_firstlnum = lnum; | |
| 3792 reg_maxline = reg_buf->b_ml.ml_line_count - lnum; | |
| 3793 reg_line_lbr = FALSE; | |
| 3794 ireg_ic = rmp->rmm_ic; | |
| 3795 #ifdef FEAT_MBYTE | |
| 3796 ireg_icombine = FALSE; | |
| 3797 #endif | |
| 410 | 3798 ireg_maxcol = rmp->rmm_maxcol; |
| 7 | 3799 |
| 6390 | 3800 return bt_regexec_both(NULL, col, tm); |
| 7 | 3801 } |
| 3802 | |
| 3803 /* | |
| 3804 * Match a regexp against a string ("line" points to the string) or multiple | |
| 3805 * lines ("line" is NULL, use reg_getline()). | |
| 6390 | 3806 * Returns 0 for failure, number of lines contained in the match otherwise. |
| 7 | 3807 */ |
| 3808 static long | |
| 4444 | 3809 bt_regexec_both(line, col, tm) |
| 7 | 3810 char_u *line; |
| 3811 colnr_T col; /* column to start looking for match */ | |
| 1877 | 3812 proftime_T *tm UNUSED; /* timeout limit or NULL */ |
| 7 | 3813 { |
| 6390 | 3814 bt_regprog_T *prog; |
| 3815 char_u *s; | |
| 3816 long retval = 0L; | |
| 7 | 3817 |
| 1520 | 3818 /* Create "regstack" and "backpos" if they are not allocated yet. |
| 3819 * We allocate *_INITIAL amount of bytes first and then set the grow size | |
| 3820 * to much bigger value to avoid many malloc calls in case of deep regular | |
| 3821 * expressions. */ | |
| 3822 if (regstack.ga_data == NULL) | |
| 3823 { | |
| 3824 /* Use an item size of 1 byte, since we push different things | |
| 3825 * onto the regstack. */ | |
| 3826 ga_init2(®stack, 1, REGSTACK_INITIAL); | |
| 7009 | 3827 (void)ga_grow(®stack, REGSTACK_INITIAL); |
| 1520 | 3828 regstack.ga_growsize = REGSTACK_INITIAL * 8; |
| 3829 } | |
| 3830 | |
| 3831 if (backpos.ga_data == NULL) | |
| 3832 { | |
| 3833 ga_init2(&backpos, sizeof(backpos_T), BACKPOS_INITIAL); | |
| 7009 | 3834 (void)ga_grow(&backpos, BACKPOS_INITIAL); |
| 1520 | 3835 backpos.ga_growsize = BACKPOS_INITIAL * 8; |
| 3836 } | |
| 270 | 3837 |
| 7 | 3838 if (REG_MULTI) |
| 3839 { | |
| 4444 | 3840 prog = (bt_regprog_T *)reg_mmatch->regprog; |
| 7 | 3841 line = reg_getline((linenr_T)0); |
| 3842 reg_startpos = reg_mmatch->startpos; | |
| 3843 reg_endpos = reg_mmatch->endpos; | |
| 3844 } | |
| 3845 else | |
| 3846 { | |
| 4444 | 3847 prog = (bt_regprog_T *)reg_match->regprog; |
| 7 | 3848 reg_startp = reg_match->startp; |
| 3849 reg_endp = reg_match->endp; | |
| 3850 } | |
| 3851 | |
| 3852 /* Be paranoid... */ | |
| 3853 if (prog == NULL || line == NULL) | |
| 3854 { | |
| 3855 EMSG(_(e_null)); | |
| 3856 goto theend; | |
| 3857 } | |
| 3858 | |
| 3859 /* Check validity of program. */ | |
| 3860 if (prog_magic_wrong()) | |
| 3861 goto theend; | |
| 3862 | |
| 410 | 3863 /* If the start column is past the maximum column: no need to try. */ |
| 3864 if (ireg_maxcol > 0 && col >= ireg_maxcol) | |
| 3865 goto theend; | |
| 3866 | |
| 7 | 3867 /* If pattern contains "\c" or "\C": overrule value of ireg_ic */ |
| 3868 if (prog->regflags & RF_ICASE) | |
| 3869 ireg_ic = TRUE; | |
| 3870 else if (prog->regflags & RF_NOICASE) | |
| 3871 ireg_ic = FALSE; | |
| 3872 | |
| 3873 #ifdef FEAT_MBYTE | |
| 3874 /* If pattern contains "\Z" overrule value of ireg_icombine */ | |
| 3875 if (prog->regflags & RF_ICOMBINE) | |
| 3876 ireg_icombine = TRUE; | |
| 3877 #endif | |
| 3878 | |
| 3879 /* If there is a "must appear" string, look for it. */ | |
| 3880 if (prog->regmust != NULL) | |
| 3881 { | |
| 3882 int c; | |
| 3883 | |
| 3884 #ifdef FEAT_MBYTE | |
| 3885 if (has_mbyte) | |
| 3886 c = (*mb_ptr2char)(prog->regmust); | |
| 3887 else | |
| 3888 #endif | |
| 3889 c = *prog->regmust; | |
| 3890 s = line + col; | |
| 170 | 3891 |
| 3892 /* | |
| 3893 * This is used very often, esp. for ":global". Use three versions of | |
| 3894 * the loop to avoid overhead of conditions. | |
| 3895 */ | |
| 3896 if (!ireg_ic | |
| 3897 #ifdef FEAT_MBYTE | |
| 3898 && !has_mbyte | |
| 3899 #endif | |
| 3900 ) | |
| 3901 while ((s = vim_strbyte(s, c)) != NULL) | |
| 3902 { | |
| 3903 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
| 3904 break; /* Found it. */ | |
| 3905 ++s; | |
| 3906 } | |
| 3907 #ifdef FEAT_MBYTE | |
| 3908 else if (!ireg_ic || (!enc_utf8 && mb_char2len(c) > 1)) | |
| 3909 while ((s = vim_strchr(s, c)) != NULL) | |
| 3910 { | |
| 3911 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
| 3912 break; /* Found it. */ | |
| 3913 mb_ptr_adv(s); | |
| 3914 } | |
| 3915 #endif | |
| 3916 else | |
| 3917 while ((s = cstrchr(s, c)) != NULL) | |
| 3918 { | |
| 3919 if (cstrncmp(s, prog->regmust, &prog->regmlen) == 0) | |
| 3920 break; /* Found it. */ | |
| 3921 mb_ptr_adv(s); | |
| 3922 } | |
| 7 | 3923 if (s == NULL) /* Not present. */ |
| 3924 goto theend; | |
| 3925 } | |
| 3926 | |
| 3927 regline = line; | |
| 3928 reglnum = 0; | |
| 2578 | 3929 reg_toolong = FALSE; |
| 7 | 3930 |
| 3931 /* Simplest case: Anchored match need be tried only once. */ | |
| 3932 if (prog->reganch) | |
| 3933 { | |
| 3934 int c; | |
| 3935 | |
| 3936 #ifdef FEAT_MBYTE | |
| 3937 if (has_mbyte) | |
| 3938 c = (*mb_ptr2char)(regline + col); | |
| 3939 else | |
| 3940 #endif | |
| 3941 c = regline[col]; | |
| 3942 if (prog->regstart == NUL | |
| 3943 || prog->regstart == c | |
| 3944 || (ireg_ic && (( | |
| 3945 #ifdef FEAT_MBYTE | |
| 3946 (enc_utf8 && utf_fold(prog->regstart) == utf_fold(c))) | |
| 3947 || (c < 255 && prog->regstart < 255 && | |
| 3948 #endif | |
| 1347 | 3949 MB_TOLOWER(prog->regstart) == MB_TOLOWER(c))))) |
| 7 | 3950 retval = regtry(prog, col); |
| 3951 else | |
| 3952 retval = 0; | |
| 3953 } | |
| 3954 else | |
| 3955 { | |
| 1521 | 3956 #ifdef FEAT_RELTIME |
| 3957 int tm_count = 0; | |
| 3958 #endif | |
| 7 | 3959 /* Messy cases: unanchored match. */ |
| 180 | 3960 while (!got_int) |
| 7 | 3961 { |
| 3962 if (prog->regstart != NUL) | |
| 3963 { | |
| 170 | 3964 /* Skip until the char we know it must start with. |
| 3965 * Used often, do some work to avoid call overhead. */ | |
| 3966 if (!ireg_ic | |
| 3967 #ifdef FEAT_MBYTE | |
| 3968 && !has_mbyte | |
| 3969 #endif | |
| 3970 ) | |
| 3971 s = vim_strbyte(regline + col, prog->regstart); | |
| 3972 else | |
| 3973 s = cstrchr(regline + col, prog->regstart); | |
| 7 | 3974 if (s == NULL) |
| 3975 { | |
| 3976 retval = 0; | |
| 3977 break; | |
| 3978 } | |
| 3979 col = (int)(s - regline); | |
| 3980 } | |
| 3981 | |
| 410 | 3982 /* Check for maximum column to try. */ |
| 3983 if (ireg_maxcol > 0 && col >= ireg_maxcol) | |
| 3984 { | |
| 3985 retval = 0; | |
| 3986 break; | |
| 3987 } | |
| 3988 | |
| 7 | 3989 retval = regtry(prog, col); |
| 3990 if (retval > 0) | |
| 3991 break; | |
| 3992 | |
| 3993 /* if not currently on the first line, get it again */ | |
| 3994 if (reglnum != 0) | |
| 3995 { | |
| 481 | 3996 reglnum = 0; |
| 7 | 3997 regline = reg_getline((linenr_T)0); |
| 3998 } | |
| 3999 if (regline[col] == NUL) | |
| 4000 break; | |
| 4001 #ifdef FEAT_MBYTE | |
| 4002 if (has_mbyte) | |
| 474 | 4003 col += (*mb_ptr2len)(regline + col); |
| 7 | 4004 else |
| 4005 #endif | |
| 4006 ++col; | |
| 1521 | 4007 #ifdef FEAT_RELTIME |
| 4008 /* Check for timeout once in a twenty times to avoid overhead. */ | |
| 4009 if (tm != NULL && ++tm_count == 20) | |
| 4010 { | |
| 4011 tm_count = 0; | |
| 4012 if (profile_passed_limit(tm)) | |
| 4013 break; | |
| 4014 } | |
| 4015 #endif | |
| 7 | 4016 } |
| 4017 } | |
| 4018 | |
| 4019 theend: | |
| 1520 | 4020 /* Free "reg_tofree" when it's a bit big. |
| 4021 * Free regstack and backpos if they are bigger than their initial size. */ | |
| 4022 if (reg_tofreelen > 400) | |
| 4023 { | |
| 4024 vim_free(reg_tofree); | |
| 4025 reg_tofree = NULL; | |
| 4026 } | |
| 4027 if (regstack.ga_maxlen > REGSTACK_INITIAL) | |
| 4028 ga_clear(®stack); | |
| 4029 if (backpos.ga_maxlen > BACKPOS_INITIAL) | |
| 4030 ga_clear(&backpos); | |
| 270 | 4031 |
| 7 | 4032 return retval; |
| 4033 } | |
| 4034 | |
| 4035 #ifdef FEAT_SYN_HL | |
| 4036 static reg_extmatch_T *make_extmatch __ARGS((void)); | |
| 4037 | |
| 4038 /* | |
| 4039 * Create a new extmatch and mark it as referenced once. | |
| 4040 */ | |
| 4041 static reg_extmatch_T * | |
| 4042 make_extmatch() | |
| 4043 { | |
| 4044 reg_extmatch_T *em; | |
| 4045 | |
| 4046 em = (reg_extmatch_T *)alloc_clear((unsigned)sizeof(reg_extmatch_T)); | |
| 4047 if (em != NULL) | |
| 4048 em->refcnt = 1; | |
| 4049 return em; | |
| 4050 } | |
| 4051 | |
| 4052 /* | |
| 4053 * Add a reference to an extmatch. | |
| 4054 */ | |
| 4055 reg_extmatch_T * | |
| 4056 ref_extmatch(em) | |
| 4057 reg_extmatch_T *em; | |
| 4058 { | |
| 4059 if (em != NULL) | |
| 4060 em->refcnt++; | |
| 4061 return em; | |
| 4062 } | |
| 4063 | |
| 4064 /* | |
| 4065 * Remove a reference to an extmatch. If there are no references left, free | |
| 4066 * the info. | |
| 4067 */ | |
| 4068 void | |
| 4069 unref_extmatch(em) | |
| 4070 reg_extmatch_T *em; | |
| 4071 { | |
| 4072 int i; | |
| 4073 | |
| 4074 if (em != NULL && --em->refcnt <= 0) | |
| 4075 { | |
| 4076 for (i = 0; i < NSUBEXP; ++i) | |
| 4077 vim_free(em->matches[i]); | |
| 4078 vim_free(em); | |
| 4079 } | |
| 4080 } | |
| 4081 #endif | |
| 4082 | |
| 4083 /* | |
| 4084 * regtry - try match of "prog" with at regline["col"]. | |
| 4085 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4086 */ | |
| 4087 static long | |
| 4088 regtry(prog, col) | |
| 4444 | 4089 bt_regprog_T *prog; |
| 7 | 4090 colnr_T col; |
| 4091 { | |
| 4092 reginput = regline + col; | |
| 4093 need_clear_subexpr = TRUE; | |
| 4094 #ifdef FEAT_SYN_HL | |
| 4095 /* Clear the external match subpointers if necessary. */ | |
| 4096 if (prog->reghasz == REX_SET) | |
| 4097 need_clear_zsubexpr = TRUE; | |
| 4098 #endif | |
| 4099 | |
| 189 | 4100 if (regmatch(prog->program + 1) == 0) |
| 4101 return 0; | |
| 4102 | |
| 4103 cleanup_subexpr(); | |
| 4104 if (REG_MULTI) | |
| 7 | 4105 { |
| 189 | 4106 if (reg_startpos[0].lnum < 0) |
| 7 | 4107 { |
| 189 | 4108 reg_startpos[0].lnum = 0; |
| 4109 reg_startpos[0].col = col; | |
| 4110 } | |
| 4111 if (reg_endpos[0].lnum < 0) | |
| 4112 { | |
| 4113 reg_endpos[0].lnum = reglnum; | |
| 4114 reg_endpos[0].col = (int)(reginput - regline); | |
| 7 | 4115 } |
| 4116 else | |
| 189 | 4117 /* Use line number of "\ze". */ |
| 4118 reglnum = reg_endpos[0].lnum; | |
| 4119 } | |
| 4120 else | |
| 4121 { | |
| 4122 if (reg_startp[0] == NULL) | |
| 4123 reg_startp[0] = regline + col; | |
| 4124 if (reg_endp[0] == NULL) | |
| 4125 reg_endp[0] = reginput; | |
| 4126 } | |
| 7 | 4127 #ifdef FEAT_SYN_HL |
| 189 | 4128 /* Package any found \z(...\) matches for export. Default is none. */ |
| 4129 unref_extmatch(re_extmatch_out); | |
| 4130 re_extmatch_out = NULL; | |
| 4131 | |
| 4132 if (prog->reghasz == REX_SET) | |
| 4133 { | |
| 4134 int i; | |
| 4135 | |
| 4136 cleanup_zsubexpr(); | |
| 4137 re_extmatch_out = make_extmatch(); | |
| 4138 for (i = 0; i < NSUBEXP; i++) | |
| 7 | 4139 { |
| 189 | 4140 if (REG_MULTI) |
| 7 | 4141 { |
| 189 | 4142 /* Only accept single line matches. */ |
| 4143 if (reg_startzpos[i].lnum >= 0 | |
| 5820 | 4144 && reg_endzpos[i].lnum == reg_startzpos[i].lnum |
| 4145 && reg_endzpos[i].col >= reg_startzpos[i].col) | |
| 189 | 4146 re_extmatch_out->matches[i] = |
| 4147 vim_strnsave(reg_getline(reg_startzpos[i].lnum) | |
| 7 | 4148 + reg_startzpos[i].col, |
| 189 | 4149 reg_endzpos[i].col - reg_startzpos[i].col); |
| 4150 } | |
| 4151 else | |
| 4152 { | |
| 4153 if (reg_startzp[i] != NULL && reg_endzp[i] != NULL) | |
| 4154 re_extmatch_out->matches[i] = | |
| 7 | 4155 vim_strnsave(reg_startzp[i], |
| 189 | 4156 (int)(reg_endzp[i] - reg_startzp[i])); |
| 7 | 4157 } |
| 4158 } | |
| 189 | 4159 } |
| 7 | 4160 #endif |
| 189 | 4161 return 1 + reglnum; |
| 7 | 4162 } |
| 4163 | |
| 4164 #ifdef FEAT_MBYTE | |
| 4165 static int reg_prev_class __ARGS((void)); | |
| 4166 | |
| 4167 /* | |
| 4168 * Get class of previous character. | |
| 4169 */ | |
| 4170 static int | |
| 4171 reg_prev_class() | |
| 4172 { | |
| 4173 if (reginput > regline) | |
| 4069 | 4174 return mb_get_class_buf(reginput - 1 |
| 4175 - (*mb_head_off)(regline, reginput - 1), reg_buf); | |
| 7 | 4176 return -1; |
| 4177 } | |
| 5735 | 4178 #endif |
| 4179 | |
|
4730
749e2b2755d5
updated for version 7.3.1112
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4720
diff
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|
4180 static int reg_match_visual __ARGS((void)); |
|
749e2b2755d5
updated for version 7.3.1112
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4720
diff
changeset
|
4181 |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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diff
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|
4182 /* |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
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|
4183 * Return TRUE if the current reginput position matches the Visual area. |
|
749e2b2755d5
updated for version 7.3.1112
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4720
diff
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|
4184 */ |
|
749e2b2755d5
updated for version 7.3.1112
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diff
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|
4185 static int |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
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|
4186 reg_match_visual() |
|
749e2b2755d5
updated for version 7.3.1112
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4720
diff
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|
4187 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
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|
4188 pos_T top, bot; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
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|
4189 linenr_T lnum; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
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|
4190 colnr_T col; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
changeset
|
4191 win_T *wp = reg_win == NULL ? curwin : reg_win; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
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|
4192 int mode; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
changeset
|
4193 colnr_T start, end; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
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|
4194 colnr_T start2, end2; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4195 colnr_T cols; |
|
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 /* Check if the buffer is the current buffer. */ |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
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|
4198 if (reg_buf != curbuf || VIsual.lnum == 0) |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
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|
4199 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4200 |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4201 if (VIsual_active) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4202 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4203 if (lt(VIsual, wp->w_cursor)) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4204 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4205 top = VIsual; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4206 bot = wp->w_cursor; |
|
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 else |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4209 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4210 top = wp->w_cursor; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
changeset
|
4211 bot = VIsual; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4212 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4213 mode = VIsual_mode; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
changeset
|
4214 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4215 else |
|
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 if (lt(curbuf->b_visual.vi_start, curbuf->b_visual.vi_end)) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4218 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4219 top = curbuf->b_visual.vi_start; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4220 bot = curbuf->b_visual.vi_end; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
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|
4221 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4222 else |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4223 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4224 top = curbuf->b_visual.vi_end; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4225 bot = curbuf->b_visual.vi_start; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4226 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4227 mode = curbuf->b_visual.vi_mode; |
|
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 lnum = reglnum + reg_firstlnum; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4230 if (lnum < top.lnum || lnum > bot.lnum) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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4720
diff
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|
4231 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4232 |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4233 if (mode == 'v') |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4234 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4235 col = (colnr_T)(reginput - regline); |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4236 if ((lnum == top.lnum && col < top.col) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4237 || (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
|
4238 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4239 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4240 else if (mode == Ctrl_V) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4241 { |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4242 getvvcol(wp, &top, &start, NULL, &end); |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4243 getvvcol(wp, &bot, &start2, NULL, &end2); |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4244 if (start2 < start) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4245 start = start2; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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4720
diff
changeset
|
4246 if (end2 > end) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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4720
diff
changeset
|
4247 end = end2; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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4720
diff
changeset
|
4248 if (top.col == MAXCOL || bot.col == MAXCOL) |
|
749e2b2755d5
updated for version 7.3.1112
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4720
diff
changeset
|
4249 end = MAXCOL; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4250 cols = win_linetabsize(wp, regline, (colnr_T)(reginput - regline)); |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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4720
diff
changeset
|
4251 if (cols < start || cols > end - (*p_sel == 'e')) |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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4720
diff
changeset
|
4252 return FALSE; |
|
749e2b2755d5
updated for version 7.3.1112
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parents:
4720
diff
changeset
|
4253 } |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
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4720
diff
changeset
|
4254 return TRUE; |
|
749e2b2755d5
updated for version 7.3.1112
Bram Moolenaar <bram@vim.org>
parents:
4720
diff
changeset
|
4255 } |
|
749e2b2755d5
updated for version 7.3.1112
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4720
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changeset
|
4256 |
| 39 | 4257 #define ADVANCE_REGINPUT() mb_ptr_adv(reginput) |
| 7 | 4258 |
| 4259 /* | |
| 4260 * The arguments from BRACE_LIMITS are stored here. They are actually local | |
| 4261 * to regmatch(), but they are here to reduce the amount of stack space used | |
| 4262 * (it can be called recursively many times). | |
| 4263 */ | |
| 4264 static long bl_minval; | |
| 4265 static long bl_maxval; | |
| 4266 | |
| 4267 /* | |
| 4268 * regmatch - main matching routine | |
| 4269 * | |
| 180 | 4270 * Conceptually the strategy is simple: Check to see whether the current node |
| 4271 * matches, push an item onto the regstack and loop to see whether the rest | |
| 4272 * matches, and then act accordingly. In practice we make some effort to | |
| 4273 * avoid using the regstack, in particular by going through "ordinary" nodes | |
| 4274 * (that don't need to know whether the rest of the match failed) by a nested | |
| 4275 * loop. | |
| 7 | 4276 * |
| 4277 * Returns TRUE when there is a match. Leaves reginput and reglnum just after | |
| 4278 * the last matched character. | |
| 4279 * Returns FALSE when there is no match. Leaves reginput and reglnum in an | |
| 4280 * undefined state! | |
| 4281 */ | |
| 4282 static int | |
| 180 | 4283 regmatch(scan) |
| 7 | 4284 char_u *scan; /* Current node. */ |
| 4285 { | |
| 180 | 4286 char_u *next; /* Next node. */ |
| 4287 int op; | |
| 4288 int c; | |
| 4289 regitem_T *rp; | |
| 4290 int no; | |
| 4291 int status; /* one of the RA_ values: */ | |
| 4292 #define RA_FAIL 1 /* something failed, abort */ | |
| 4293 #define RA_CONT 2 /* continue in inner loop */ | |
| 4294 #define RA_BREAK 3 /* break inner loop */ | |
| 4295 #define RA_MATCH 4 /* successful match */ | |
| 4296 #define RA_NOMATCH 5 /* didn't match */ | |
| 270 | 4297 |
| 1520 | 4298 /* Make "regstack" and "backpos" empty. They are allocated and freed in |
| 4444 | 4299 * bt_regexec_both() to reduce malloc()/free() calls. */ |
| 270 | 4300 regstack.ga_len = 0; |
| 4301 backpos.ga_len = 0; | |
| 233 | 4302 |
| 180 | 4303 /* |
| 233 | 4304 * Repeat until "regstack" is empty. |
| 180 | 4305 */ |
| 4306 for (;;) | |
| 4307 { | |
| 5310 | 4308 /* Some patterns may take a long time to match, e.g., "\([a-z]\+\)\+Q". |
| 4309 * Allow interrupting them with CTRL-C. */ | |
| 7 | 4310 fast_breakcheck(); |
| 4311 | |
| 4312 #ifdef DEBUG | |
| 4313 if (scan != NULL && regnarrate) | |
| 4314 { | |
| 4444 | 4315 mch_errmsg((char *)regprop(scan)); |
| 7 | 4316 mch_errmsg("(\n"); |
| 4317 } | |
| 4318 #endif | |
| 180 | 4319 |
| 4320 /* | |
| 233 | 4321 * Repeat for items that can be matched sequentially, without using the |
| 180 | 4322 * regstack. |
| 4323 */ | |
| 4324 for (;;) | |
| 7 | 4325 { |
| 180 | 4326 if (got_int || scan == NULL) |
| 4327 { | |
| 4328 status = RA_FAIL; | |
| 4329 break; | |
| 4330 } | |
| 4331 status = RA_CONT; | |
| 4332 | |
| 7 | 4333 #ifdef DEBUG |
| 4334 if (regnarrate) | |
| 4335 { | |
| 4444 | 4336 mch_errmsg((char *)regprop(scan)); |
| 7 | 4337 mch_errmsg("...\n"); |
| 4338 # ifdef FEAT_SYN_HL | |
| 4339 if (re_extmatch_in != NULL) | |
| 4340 { | |
| 4341 int i; | |
| 4342 | |
| 4343 mch_errmsg(_("External submatches:\n")); | |
| 4344 for (i = 0; i < NSUBEXP; i++) | |
| 4345 { | |
| 4346 mch_errmsg(" \""); | |
| 4347 if (re_extmatch_in->matches[i] != NULL) | |
| 4444 | 4348 mch_errmsg((char *)re_extmatch_in->matches[i]); |
| 7 | 4349 mch_errmsg("\"\n"); |
| 4350 } | |
| 4351 } | |
| 4352 # endif | |
| 4353 } | |
| 4354 #endif | |
| 4355 next = regnext(scan); | |
| 4356 | |
| 4357 op = OP(scan); | |
| 4358 /* Check for character class with NL added. */ | |
| 1018 | 4359 if (!reg_line_lbr && WITH_NL(op) && REG_MULTI |
| 4360 && *reginput == NUL && reglnum <= reg_maxline) | |
| 7 | 4361 { |
| 4362 reg_nextline(); | |
| 4363 } | |
| 4364 else if (reg_line_lbr && WITH_NL(op) && *reginput == '\n') | |
| 4365 { | |
| 4366 ADVANCE_REGINPUT(); | |
| 4367 } | |
| 4368 else | |
| 4369 { | |
| 4370 if (WITH_NL(op)) | |
| 180 | 4371 op -= ADD_NL; |
| 7 | 4372 #ifdef FEAT_MBYTE |
| 4373 if (has_mbyte) | |
| 4374 c = (*mb_ptr2char)(reginput); | |
| 4375 else | |
| 4376 #endif | |
| 4377 c = *reginput; | |
| 4378 switch (op) | |
| 4379 { | |
| 4380 case BOL: | |
| 4381 if (reginput != regline) | |
| 180 | 4382 status = RA_NOMATCH; |
| 7 | 4383 break; |
| 4384 | |
| 4385 case EOL: | |
| 4386 if (c != NUL) | |
| 180 | 4387 status = RA_NOMATCH; |
| 7 | 4388 break; |
| 4389 | |
| 4390 case RE_BOF: | |
| 1458 | 4391 /* We're not at the beginning of the file when below the first |
| 4392 * line where we started, not at the start of the line or we | |
| 4393 * didn't start at the first line of the buffer. */ | |
| 7 | 4394 if (reglnum != 0 || reginput != regline |
| 1458 | 4395 || (REG_MULTI && reg_firstlnum > 1)) |
| 180 | 4396 status = RA_NOMATCH; |
| 7 | 4397 break; |
| 4398 | |
| 4399 case RE_EOF: | |
| 4400 if (reglnum != reg_maxline || c != NUL) | |
| 180 | 4401 status = RA_NOMATCH; |
| 7 | 4402 break; |
| 4403 | |
| 4404 case CURSOR: | |
| 4405 /* Check if the buffer is in a window and compare the | |
| 4406 * reg_win->w_cursor position to the match position. */ | |
| 4407 if (reg_win == NULL | |
| 4408 || (reglnum + reg_firstlnum != reg_win->w_cursor.lnum) | |
| 4409 || ((colnr_T)(reginput - regline) != reg_win->w_cursor.col)) | |
| 180 | 4410 status = RA_NOMATCH; |
| 7 | 4411 break; |
| 4412 | |
| 639 | 4413 case RE_MARK: |
|
4732
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updated for version 7.3.1113
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parents:
4730
diff
changeset
|
4414 /* Compare the mark position to the match position. */ |
| 639 | 4415 { |
| 4416 int mark = OPERAND(scan)[0]; | |
| 4417 int cmp = OPERAND(scan)[1]; | |
| 4418 pos_T *pos; | |
| 4419 | |
| 4043 | 4420 pos = getmark_buf(reg_buf, mark, FALSE); |
| 1148 | 4421 if (pos == NULL /* mark doesn't exist */ |
|
4732
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4730
diff
changeset
|
4422 || pos->lnum <= 0 /* mark isn't set in reg_buf */ |
| 639 | 4423 || (pos->lnum == reglnum + reg_firstlnum |
| 4424 ? (pos->col == (colnr_T)(reginput - regline) | |
| 4425 ? (cmp == '<' || cmp == '>') | |
| 4426 : (pos->col < (colnr_T)(reginput - regline) | |
| 4427 ? cmp != '>' | |
| 4428 : cmp != '<')) | |
| 4429 : (pos->lnum < reglnum + reg_firstlnum | |
| 4430 ? cmp != '>' | |
| 4431 : cmp != '<'))) | |
| 4432 status = RA_NOMATCH; | |
| 4433 } | |
| 4434 break; | |
| 4435 | |
| 4436 case RE_VISUAL: | |
|
4730
749e2b2755d5
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Bram Moolenaar <bram@vim.org>
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4720
diff
changeset
|
4437 if (!reg_match_visual()) |
| 639 | 4438 status = RA_NOMATCH; |
| 4439 break; | |
| 4440 | |
| 7 | 4441 case RE_LNUM: |
| 4442 if (!REG_MULTI || !re_num_cmp((long_u)(reglnum + reg_firstlnum), | |
| 4443 scan)) | |
| 180 | 4444 status = RA_NOMATCH; |
| 7 | 4445 break; |
| 4446 | |
| 4447 case RE_COL: | |
| 4448 if (!re_num_cmp((long_u)(reginput - regline) + 1, scan)) | |
| 180 | 4449 status = RA_NOMATCH; |
| 7 | 4450 break; |
| 4451 | |
| 4452 case RE_VCOL: | |
| 4453 if (!re_num_cmp((long_u)win_linetabsize( | |
| 4454 reg_win == NULL ? curwin : reg_win, | |
| 4455 regline, (colnr_T)(reginput - regline)) + 1, scan)) | |
| 180 | 4456 status = RA_NOMATCH; |
| 7 | 4457 break; |
| 4458 | |
| 4459 case BOW: /* \<word; reginput points to w */ | |
| 4460 if (c == NUL) /* Can't match at end of line */ | |
| 180 | 4461 status = RA_NOMATCH; |
| 7 | 4462 #ifdef FEAT_MBYTE |
| 180 | 4463 else if (has_mbyte) |
| 7 | 4464 { |
| 4465 int this_class; | |
| 4466 | |
| 4467 /* Get class of current and previous char (if it exists). */ | |
| 4069 | 4468 this_class = mb_get_class_buf(reginput, reg_buf); |
| 7 | 4469 if (this_class <= 1) |
| 180 | 4470 status = RA_NOMATCH; /* not on a word at all */ |
| 4471 else if (reg_prev_class() == this_class) | |
| 4472 status = RA_NOMATCH; /* previous char is in same word */ | |
| 7 | 4473 } |
| 4474 #endif | |
| 4475 else | |
| 4476 { | |
| 4061 | 4477 if (!vim_iswordc_buf(c, reg_buf) || (reginput > regline |
| 4478 && vim_iswordc_buf(reginput[-1], reg_buf))) | |
| 180 | 4479 status = RA_NOMATCH; |
| 7 | 4480 } |
| 4481 break; | |
| 4482 | |
| 4483 case EOW: /* word\>; reginput points after d */ | |
| 4484 if (reginput == regline) /* Can't match at start of line */ | |
| 180 | 4485 status = RA_NOMATCH; |
| 7 | 4486 #ifdef FEAT_MBYTE |
| 180 | 4487 else if (has_mbyte) |
| 7 | 4488 { |
| 4489 int this_class, prev_class; | |
| 4490 | |
| 4491 /* Get class of current and previous char (if it exists). */ | |
| 4069 | 4492 this_class = mb_get_class_buf(reginput, reg_buf); |
| 7 | 4493 prev_class = reg_prev_class(); |
| 180 | 4494 if (this_class == prev_class |
| 4495 || prev_class == 0 || prev_class == 1) | |
| 4496 status = RA_NOMATCH; | |
| 7 | 4497 } |
| 180 | 4498 #endif |
| 7 | 4499 else |
| 4500 { | |
| 4043 | 4501 if (!vim_iswordc_buf(reginput[-1], reg_buf) |
| 4502 || (reginput[0] != NUL && vim_iswordc_buf(c, reg_buf))) | |
| 180 | 4503 status = RA_NOMATCH; |
| 7 | 4504 } |
| 4505 break; /* Matched with EOW */ | |
| 4506 | |
| 4507 case ANY: | |
| 4084 | 4508 /* ANY does not match new lines. */ |
| 7 | 4509 if (c == NUL) |
| 180 | 4510 status = RA_NOMATCH; |
| 4511 else | |
| 4512 ADVANCE_REGINPUT(); | |
| 7 | 4513 break; |
| 4514 | |
| 4515 case IDENT: | |
| 4516 if (!vim_isIDc(c)) | |
| 180 | 4517 status = RA_NOMATCH; |
| 4518 else | |
| 4519 ADVANCE_REGINPUT(); | |
| 7 | 4520 break; |
| 4521 | |
| 4522 case SIDENT: | |
| 4523 if (VIM_ISDIGIT(*reginput) || !vim_isIDc(c)) | |
| 180 | 4524 status = RA_NOMATCH; |
| 4525 else | |
| 4526 ADVANCE_REGINPUT(); | |
| 7 | 4527 break; |
| 4528 | |
| 4529 case KWORD: | |
| 4069 | 4530 if (!vim_iswordp_buf(reginput, reg_buf)) |
| 180 | 4531 status = RA_NOMATCH; |
| 4532 else | |
| 4533 ADVANCE_REGINPUT(); | |
| 7 | 4534 break; |
| 4535 | |
| 4536 case SKWORD: | |
| 4069 | 4537 if (VIM_ISDIGIT(*reginput) || !vim_iswordp_buf(reginput, reg_buf)) |
| 180 | 4538 status = RA_NOMATCH; |
| 4539 else | |
| 4540 ADVANCE_REGINPUT(); | |
| 7 | 4541 break; |
| 4542 | |
| 4543 case FNAME: | |
| 4544 if (!vim_isfilec(c)) | |
| 180 | 4545 status = RA_NOMATCH; |
| 4546 else | |
| 4547 ADVANCE_REGINPUT(); | |
| 7 | 4548 break; |
| 4549 | |
| 4550 case SFNAME: | |
| 4551 if (VIM_ISDIGIT(*reginput) || !vim_isfilec(c)) | |
| 180 | 4552 status = RA_NOMATCH; |
| 4553 else | |
| 4554 ADVANCE_REGINPUT(); | |
| 7 | 4555 break; |
| 4556 | |
| 4557 case PRINT: | |
|
5221
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Bram Moolenaar <bram@vim.org>
parents:
4901
diff
changeset
|
4558 if (!vim_isprintc(PTR2CHAR(reginput))) |
| 180 | 4559 status = RA_NOMATCH; |
| 4560 else | |
| 4561 ADVANCE_REGINPUT(); | |
| 7 | 4562 break; |
| 4563 | |
| 4564 case SPRINT: | |
|
5221
9982ec574beb
updated for version 7.4a.036
Bram Moolenaar <bram@vim.org>
parents:
4901
diff
changeset
|
4565 if (VIM_ISDIGIT(*reginput) || !vim_isprintc(PTR2CHAR(reginput))) |
| 180 | 4566 status = RA_NOMATCH; |
| 4567 else | |
| 4568 ADVANCE_REGINPUT(); | |
| 7 | 4569 break; |
| 4570 | |
| 4571 case WHITE: | |
| 4572 if (!vim_iswhite(c)) | |
| 180 | 4573 status = RA_NOMATCH; |
| 4574 else | |
| 4575 ADVANCE_REGINPUT(); | |
| 7 | 4576 break; |
| 4577 | |
| 4578 case NWHITE: | |
| 4579 if (c == NUL || vim_iswhite(c)) | |
| 180 | 4580 status = RA_NOMATCH; |
| 4581 else | |
| 4582 ADVANCE_REGINPUT(); | |
| 7 | 4583 break; |
| 4584 | |
| 4585 case DIGIT: | |
| 4586 if (!ri_digit(c)) | |
| 180 | 4587 status = RA_NOMATCH; |
| 4588 else | |
| 4589 ADVANCE_REGINPUT(); | |
| 7 | 4590 break; |
| 4591 | |
| 4592 case NDIGIT: | |
| 4593 if (c == NUL || ri_digit(c)) | |
| 180 | 4594 status = RA_NOMATCH; |
| 4595 else | |
| 4596 ADVANCE_REGINPUT(); | |
| 7 | 4597 break; |
| 4598 | |
| 4599 case HEX: | |
| 4600 if (!ri_hex(c)) | |
| 180 | 4601 status = RA_NOMATCH; |
| 4602 else | |
| 4603 ADVANCE_REGINPUT(); | |
| 7 | 4604 break; |
| 4605 | |
| 4606 case NHEX: | |
| 4607 if (c == NUL || ri_hex(c)) | |
| 180 | 4608 status = RA_NOMATCH; |
| 4609 else | |
| 4610 ADVANCE_REGINPUT(); | |
| 7 | 4611 break; |
| 4612 | |
| 4613 case OCTAL: | |
| 4614 if (!ri_octal(c)) | |
| 180 | 4615 status = RA_NOMATCH; |
| 4616 else | |
| 4617 ADVANCE_REGINPUT(); | |
| 7 | 4618 break; |
| 4619 | |
| 4620 case NOCTAL: | |
| 4621 if (c == NUL || ri_octal(c)) | |
| 180 | 4622 status = RA_NOMATCH; |
| 4623 else | |
| 4624 ADVANCE_REGINPUT(); | |
| 7 | 4625 break; |
| 4626 | |
| 4627 case WORD: | |
| 4628 if (!ri_word(c)) | |
| 180 | 4629 status = RA_NOMATCH; |
| 4630 else | |
| 4631 ADVANCE_REGINPUT(); | |
| 7 | 4632 break; |
| 4633 | |
| 4634 case NWORD: | |
| 4635 if (c == NUL || ri_word(c)) | |
| 180 | 4636 status = RA_NOMATCH; |
| 4637 else | |
| 4638 ADVANCE_REGINPUT(); | |
| 7 | 4639 break; |
| 4640 | |
| 4641 case HEAD: | |
| 4642 if (!ri_head(c)) | |
| 180 | 4643 status = RA_NOMATCH; |
| 4644 else | |
| 4645 ADVANCE_REGINPUT(); | |
| 7 | 4646 break; |
| 4647 | |
| 4648 case NHEAD: | |
| 4649 if (c == NUL || ri_head(c)) | |
| 180 | 4650 status = RA_NOMATCH; |
| 4651 else | |
| 4652 ADVANCE_REGINPUT(); | |
| 7 | 4653 break; |
| 4654 | |
| 4655 case ALPHA: | |
| 4656 if (!ri_alpha(c)) | |
| 180 | 4657 status = RA_NOMATCH; |
| 4658 else | |
| 4659 ADVANCE_REGINPUT(); | |
| 7 | 4660 break; |
| 4661 | |
| 4662 case NALPHA: | |
| 4663 if (c == NUL || ri_alpha(c)) | |
| 180 | 4664 status = RA_NOMATCH; |
| 4665 else | |
| 4666 ADVANCE_REGINPUT(); | |
| 7 | 4667 break; |
| 4668 | |
| 4669 case LOWER: | |
| 4670 if (!ri_lower(c)) | |
| 180 | 4671 status = RA_NOMATCH; |
| 4672 else | |
| 4673 ADVANCE_REGINPUT(); | |
| 7 | 4674 break; |
| 4675 | |
| 4676 case NLOWER: | |
| 4677 if (c == NUL || ri_lower(c)) | |
| 180 | 4678 status = RA_NOMATCH; |
| 4679 else | |
| 4680 ADVANCE_REGINPUT(); | |
| 7 | 4681 break; |
| 4682 | |
| 4683 case UPPER: | |
| 4684 if (!ri_upper(c)) | |
| 180 | 4685 status = RA_NOMATCH; |
| 4686 else | |
| 4687 ADVANCE_REGINPUT(); | |
| 7 | 4688 break; |
| 4689 | |
| 4690 case NUPPER: | |
| 4691 if (c == NUL || ri_upper(c)) | |
| 180 | 4692 status = RA_NOMATCH; |
| 4693 else | |
| 4694 ADVANCE_REGINPUT(); | |
| 7 | 4695 break; |
| 4696 | |
| 4697 case EXACTLY: | |
| 4698 { | |
| 4699 int len; | |
| 4700 char_u *opnd; | |
| 4701 | |
| 4702 opnd = OPERAND(scan); | |
| 4703 /* Inline the first byte, for speed. */ | |
| 4704 if (*opnd != *reginput | |
| 4705 && (!ireg_ic || ( | |
| 4706 #ifdef FEAT_MBYTE | |
| 4707 !enc_utf8 && | |
| 4708 #endif | |
| 1347 | 4709 MB_TOLOWER(*opnd) != MB_TOLOWER(*reginput)))) |
| 180 | 4710 status = RA_NOMATCH; |
| 4711 else if (*opnd == NUL) | |
| 7 | 4712 { |
| 4713 /* match empty string always works; happens when "~" is | |
| 4714 * empty. */ | |
| 4715 } | |
| 5899 | 4716 else |
| 4717 { | |
| 4718 if (opnd[1] == NUL | |
| 7 | 4719 #ifdef FEAT_MBYTE |
| 4720 && !(enc_utf8 && ireg_ic) | |
| 4721 #endif | |
| 4722 ) | |
| 5899 | 4723 { |
| 4724 len = 1; /* matched a single byte above */ | |
| 4725 } | |
| 4726 else | |
| 4727 { | |
| 4728 /* Need to match first byte again for multi-byte. */ | |
| 4729 len = (int)STRLEN(opnd); | |
| 4730 if (cstrncmp(opnd, reginput, &len) != 0) | |
| 4731 status = RA_NOMATCH; | |
| 4732 } | |
| 7 | 4733 #ifdef FEAT_MBYTE |
| 5901 | 4734 /* Check for following composing character, unless %C |
| 4735 * follows (skips over all composing chars). */ | |
| 5899 | 4736 if (status != RA_NOMATCH |
| 4737 && enc_utf8 | |
| 4738 && UTF_COMPOSINGLIKE(reginput, reginput + len) | |
| 5901 | 4739 && !ireg_icombine |
| 4740 && OP(next) != RE_COMPOSING) | |
| 7 | 4741 { |
| 4742 /* raaron: This code makes a composing character get | |
| 4743 * ignored, which is the correct behavior (sometimes) | |
| 4744 * for voweled Hebrew texts. */ | |
| 5899 | 4745 status = RA_NOMATCH; |
| 7 | 4746 } |
| 180 | 4747 #endif |
| 5899 | 4748 if (status != RA_NOMATCH) |
| 180 | 4749 reginput += len; |
| 7 | 4750 } |
| 4751 } | |
| 4752 break; | |
| 4753 | |
| 4754 case ANYOF: | |
| 4755 case ANYBUT: | |
| 4756 if (c == NUL) | |
| 180 | 4757 status = RA_NOMATCH; |
| 4758 else if ((cstrchr(OPERAND(scan), c) == NULL) == (op == ANYOF)) | |
| 4759 status = RA_NOMATCH; | |
| 4760 else | |
| 4761 ADVANCE_REGINPUT(); | |
| 7 | 4762 break; |
| 4763 | |
| 4764 #ifdef FEAT_MBYTE | |
| 4765 case MULTIBYTECODE: | |
| 4766 if (has_mbyte) | |
| 4767 { | |
| 4768 int i, len; | |
| 4769 char_u *opnd; | |
| 944 | 4770 int opndc = 0, inpc; |
| 7 | 4771 |
| 4772 opnd = OPERAND(scan); | |
| 4773 /* Safety check (just in case 'encoding' was changed since | |
| 4774 * compiling the program). */ | |
| 474 | 4775 if ((len = (*mb_ptr2len)(opnd)) < 2) |
| 180 | 4776 { |
| 4777 status = RA_NOMATCH; | |
| 4778 break; | |
| 4779 } | |
| 714 | 4780 if (enc_utf8) |
| 4781 opndc = mb_ptr2char(opnd); | |
| 4782 if (enc_utf8 && utf_iscomposing(opndc)) | |
| 4783 { | |
| 4784 /* When only a composing char is given match at any | |
| 4785 * position where that composing char appears. */ | |
| 4786 status = RA_NOMATCH; | |
| 6723 | 4787 for (i = 0; reginput[i] != NUL; |
| 4788 i += utf_ptr2len(reginput + i)) | |
| 180 | 4789 { |
| 714 | 4790 inpc = mb_ptr2char(reginput + i); |
| 4791 if (!utf_iscomposing(inpc)) | |
| 4792 { | |
| 4793 if (i > 0) | |
| 4794 break; | |
| 4795 } | |
| 4796 else if (opndc == inpc) | |
| 4797 { | |
| 4798 /* Include all following composing chars. */ | |
| 4799 len = i + mb_ptr2len(reginput + i); | |
| 4800 status = RA_MATCH; | |
| 4801 break; | |
| 4802 } | |
| 180 | 4803 } |
| 714 | 4804 } |
| 4805 else | |
| 4806 for (i = 0; i < len; ++i) | |
| 4807 if (opnd[i] != reginput[i]) | |
| 4808 { | |
| 4809 status = RA_NOMATCH; | |
| 4810 break; | |
| 4811 } | |
| 7 | 4812 reginput += len; |
| 4813 } | |
| 4814 else | |
| 180 | 4815 status = RA_NOMATCH; |
| 7 | 4816 break; |
| 4817 #endif | |
| 5901 | 4818 case RE_COMPOSING: |
| 4819 #ifdef FEAT_MBYTE | |
| 4820 if (enc_utf8) | |
| 4821 { | |
| 4822 /* Skip composing characters. */ | |
| 4823 while (utf_iscomposing(utf_ptr2char(reginput))) | |
| 4824 mb_cptr_adv(reginput); | |
| 4825 } | |
| 4826 #endif | |
| 4827 break; | |
| 7 | 4828 |
| 4829 case NOTHING: | |
| 4830 break; | |
| 4831 | |
| 4832 case BACK: | |
| 233 | 4833 { |
| 4834 int i; | |
| 4835 backpos_T *bp; | |
| 4836 | |
| 4837 /* | |
| 4838 * When we run into BACK we need to check if we don't keep | |
| 4839 * looping without matching any input. The second and later | |
| 4840 * times a BACK is encountered it fails if the input is still | |
| 4841 * at the same position as the previous time. | |
| 4842 * The positions are stored in "backpos" and found by the | |
| 4843 * current value of "scan", the position in the RE program. | |
| 4844 */ | |
| 4845 bp = (backpos_T *)backpos.ga_data; | |
| 4846 for (i = 0; i < backpos.ga_len; ++i) | |
| 4847 if (bp[i].bp_scan == scan) | |
| 4848 break; | |
| 4849 if (i == backpos.ga_len) | |
| 4850 { | |
| 4851 /* First time at this BACK, make room to store the pos. */ | |
| 4852 if (ga_grow(&backpos, 1) == FAIL) | |
| 4853 status = RA_FAIL; | |
| 4854 else | |
| 4855 { | |
| 4856 /* get "ga_data" again, it may have changed */ | |
| 4857 bp = (backpos_T *)backpos.ga_data; | |
| 4858 bp[i].bp_scan = scan; | |
| 4859 ++backpos.ga_len; | |
| 4860 } | |
| 4861 } | |
| 4862 else if (reg_save_equal(&bp[i].bp_pos)) | |
| 4863 /* Still at same position as last time, fail. */ | |
| 4864 status = RA_NOMATCH; | |
| 4865 | |
| 4866 if (status != RA_FAIL && status != RA_NOMATCH) | |
| 4867 reg_save(&bp[i].bp_pos, &backpos); | |
| 4868 } | |
| 179 | 4869 break; |
| 4870 | |
| 7 | 4871 case MOPEN + 0: /* Match start: \zs */ |
| 4872 case MOPEN + 1: /* \( */ | |
| 4873 case MOPEN + 2: | |
| 4874 case MOPEN + 3: | |
| 4875 case MOPEN + 4: | |
| 4876 case MOPEN + 5: | |
| 4877 case MOPEN + 6: | |
| 4878 case MOPEN + 7: | |
| 4879 case MOPEN + 8: | |
| 4880 case MOPEN + 9: | |
| 4881 { | |
| 4882 no = op - MOPEN; | |
| 4883 cleanup_subexpr(); | |
| 270 | 4884 rp = regstack_push(RS_MOPEN, scan); |
| 180 | 4885 if (rp == NULL) |
| 4886 status = RA_FAIL; | |
| 4887 else | |
| 4888 { | |
| 4889 rp->rs_no = no; | |
| 4890 save_se(&rp->rs_un.sesave, ®_startpos[no], | |
| 4891 ®_startp[no]); | |
| 4892 /* We simply continue and handle the result when done. */ | |
| 4893 } | |
| 7 | 4894 } |
| 180 | 4895 break; |
| 7 | 4896 |
| 4897 case NOPEN: /* \%( */ | |
| 4898 case NCLOSE: /* \) after \%( */ | |
| 270 | 4899 if (regstack_push(RS_NOPEN, scan) == NULL) |
| 180 | 4900 status = RA_FAIL; |
| 4901 /* We simply continue and handle the result when done. */ | |
| 4902 break; | |
| 7 | 4903 |
| 4904 #ifdef FEAT_SYN_HL | |
| 4905 case ZOPEN + 1: | |
| 4906 case ZOPEN + 2: | |
| 4907 case ZOPEN + 3: | |
| 4908 case ZOPEN + 4: | |
| 4909 case ZOPEN + 5: | |
| 4910 case ZOPEN + 6: | |
| 4911 case ZOPEN + 7: | |
| 4912 case ZOPEN + 8: | |
| 4913 case ZOPEN + 9: | |
| 4914 { | |
| 4915 no = op - ZOPEN; | |
| 4916 cleanup_zsubexpr(); | |
| 270 | 4917 rp = regstack_push(RS_ZOPEN, scan); |
| 180 | 4918 if (rp == NULL) |
| 4919 status = RA_FAIL; | |
| 4920 else | |
| 4921 { | |
| 4922 rp->rs_no = no; | |
| 4923 save_se(&rp->rs_un.sesave, ®_startzpos[no], | |
| 4924 ®_startzp[no]); | |
| 4925 /* We simply continue and handle the result when done. */ | |
| 4926 } | |
| 7 | 4927 } |
| 180 | 4928 break; |
| 7 | 4929 #endif |
| 4930 | |
| 4931 case MCLOSE + 0: /* Match end: \ze */ | |
| 4932 case MCLOSE + 1: /* \) */ | |
| 4933 case MCLOSE + 2: | |
| 4934 case MCLOSE + 3: | |
| 4935 case MCLOSE + 4: | |
| 4936 case MCLOSE + 5: | |
| 4937 case MCLOSE + 6: | |
| 4938 case MCLOSE + 7: | |
| 4939 case MCLOSE + 8: | |
| 4940 case MCLOSE + 9: | |
| 4941 { | |
| 4942 no = op - MCLOSE; | |
| 4943 cleanup_subexpr(); | |
| 270 | 4944 rp = regstack_push(RS_MCLOSE, scan); |
| 180 | 4945 if (rp == NULL) |
| 4946 status = RA_FAIL; | |
| 4947 else | |
| 4948 { | |
| 4949 rp->rs_no = no; | |
| 4950 save_se(&rp->rs_un.sesave, ®_endpos[no], ®_endp[no]); | |
| 4951 /* We simply continue and handle the result when done. */ | |
| 4952 } | |
| 7 | 4953 } |
| 180 | 4954 break; |
| 7 | 4955 |
| 4956 #ifdef FEAT_SYN_HL | |
| 4957 case ZCLOSE + 1: /* \) after \z( */ | |
| 4958 case ZCLOSE + 2: | |
| 4959 case ZCLOSE + 3: | |
| 4960 case ZCLOSE + 4: | |
| 4961 case ZCLOSE + 5: | |
| 4962 case ZCLOSE + 6: | |
| 4963 case ZCLOSE + 7: | |
| 4964 case ZCLOSE + 8: | |
| 4965 case ZCLOSE + 9: | |
| 4966 { | |
| 4967 no = op - ZCLOSE; | |
| 4968 cleanup_zsubexpr(); | |
| 270 | 4969 rp = regstack_push(RS_ZCLOSE, scan); |
| 180 | 4970 if (rp == NULL) |
| 4971 status = RA_FAIL; | |
| 4972 else | |
| 4973 { | |
| 4974 rp->rs_no = no; | |
| 4975 save_se(&rp->rs_un.sesave, ®_endzpos[no], | |
| 4976 ®_endzp[no]); | |
| 4977 /* We simply continue and handle the result when done. */ | |
| 4978 } | |
| 7 | 4979 } |
| 180 | 4980 break; |
| 7 | 4981 #endif |
| 4982 | |
| 4983 case BACKREF + 1: | |
| 4984 case BACKREF + 2: | |
| 4985 case BACKREF + 3: | |
| 4986 case BACKREF + 4: | |
| 4987 case BACKREF + 5: | |
| 4988 case BACKREF + 6: | |
| 4989 case BACKREF + 7: | |
| 4990 case BACKREF + 8: | |
| 4991 case BACKREF + 9: | |
| 4992 { | |
| 4993 int len; | |
| 4994 | |
| 4995 no = op - BACKREF; | |
| 4996 cleanup_subexpr(); | |
| 4997 if (!REG_MULTI) /* Single-line regexp */ | |
| 4998 { | |
| 1815 | 4999 if (reg_startp[no] == NULL || reg_endp[no] == NULL) |
| 7 | 5000 { |
| 5001 /* Backref was not set: Match an empty string. */ | |
| 5002 len = 0; | |
| 5003 } | |
| 5004 else | |
| 5005 { | |
| 5006 /* Compare current input with back-ref in the same | |
| 5007 * line. */ | |
| 5008 len = (int)(reg_endp[no] - reg_startp[no]); | |
| 5009 if (cstrncmp(reg_startp[no], reginput, &len) != 0) | |
| 180 | 5010 status = RA_NOMATCH; |
| 7 | 5011 } |
| 5012 } | |
| 5013 else /* Multi-line regexp */ | |
| 5014 { | |
| 1815 | 5015 if (reg_startpos[no].lnum < 0 || reg_endpos[no].lnum < 0) |
| 7 | 5016 { |
| 5017 /* Backref was not set: Match an empty string. */ | |
| 5018 len = 0; | |
| 5019 } | |
| 5020 else | |
| 5021 { | |
| 5022 if (reg_startpos[no].lnum == reglnum | |
| 5023 && reg_endpos[no].lnum == reglnum) | |
| 5024 { | |
| 5025 /* Compare back-ref within the current line. */ | |
| 5026 len = reg_endpos[no].col - reg_startpos[no].col; | |
| 5027 if (cstrncmp(regline + reg_startpos[no].col, | |
| 5028 reginput, &len) != 0) | |
| 180 | 5029 status = RA_NOMATCH; |
| 7 | 5030 } |
| 5031 else | |
| 5032 { | |
| 5033 /* Messy situation: Need to compare between two | |
| 5034 * lines. */ | |
|
4901
56fbf60e9476
updated for version 7.3.1196
Bram Moolenaar <bram@vim.org>
parents:
4899
diff
changeset
|
5035 int r = match_with_backref( |
|
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
5036 reg_startpos[no].lnum, |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
5037 reg_startpos[no].col, |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
5038 reg_endpos[no].lnum, |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
5039 reg_endpos[no].col, |
|
4899
4837fd61be52
updated for version 7.3.1195
Bram Moolenaar <bram@vim.org>
parents:
4891
diff
changeset
|
5040 &len); |
|
4901
56fbf60e9476
updated for version 7.3.1196
Bram Moolenaar <bram@vim.org>
parents:
4899
diff
changeset
|
5041 |
|
56fbf60e9476
updated for version 7.3.1196
Bram Moolenaar <bram@vim.org>
parents:
4899
diff
changeset
|
5042 if (r != RA_MATCH) |
|
56fbf60e9476
updated for version 7.3.1196
Bram Moolenaar <bram@vim.org>
parents:
4899
diff
changeset
|
5043 status = r; |
| 7 | 5044 } |
| 5045 } | |
| 5046 } | |
| 5047 | |
| 5048 /* Matched the backref, skip over it. */ | |
| 5049 reginput += len; | |
| 5050 } | |
| 5051 break; | |
| 5052 | |
| 5053 #ifdef FEAT_SYN_HL | |
| 5054 case ZREF + 1: | |
| 5055 case ZREF + 2: | |
| 5056 case ZREF + 3: | |
| 5057 case ZREF + 4: | |
| 5058 case ZREF + 5: | |
| 5059 case ZREF + 6: | |
| 5060 case ZREF + 7: | |
| 5061 case ZREF + 8: | |
| 5062 case ZREF + 9: | |
| 5063 { | |
| 5064 int len; | |
| 5065 | |
| 5066 cleanup_zsubexpr(); | |
| 5067 no = op - ZREF; | |
| 5068 if (re_extmatch_in != NULL | |
| 5069 && re_extmatch_in->matches[no] != NULL) | |
| 5070 { | |
| 5071 len = (int)STRLEN(re_extmatch_in->matches[no]); | |
| 5072 if (cstrncmp(re_extmatch_in->matches[no], | |
| 5073 reginput, &len) != 0) | |
| 180 | 5074 status = RA_NOMATCH; |
| 5075 else | |
| 5076 reginput += len; | |
| 7 | 5077 } |
| 5078 else | |
| 5079 { | |
| 5080 /* Backref was not set: Match an empty string. */ | |
| 5081 } | |
| 5082 } | |
| 5083 break; | |
| 5084 #endif | |
| 5085 | |
| 5086 case BRANCH: | |
| 5087 { | |
| 5088 if (OP(next) != BRANCH) /* No choice. */ | |
| 5089 next = OPERAND(scan); /* Avoid recursion. */ | |
| 5090 else | |
| 5091 { | |
| 270 | 5092 rp = regstack_push(RS_BRANCH, scan); |
| 180 | 5093 if (rp == NULL) |
| 5094 status = RA_FAIL; | |
| 5095 else | |
| 5096 status = RA_BREAK; /* rest is below */ | |
| 7 | 5097 } |
| 5098 } | |
| 5099 break; | |
| 5100 | |
| 5101 case BRACE_LIMITS: | |
| 5102 { | |
| 5103 if (OP(next) == BRACE_SIMPLE) | |
| 5104 { | |
| 5105 bl_minval = OPERAND_MIN(scan); | |
| 5106 bl_maxval = OPERAND_MAX(scan); | |
| 5107 } | |
| 5108 else if (OP(next) >= BRACE_COMPLEX | |
| 5109 && OP(next) < BRACE_COMPLEX + 10) | |
| 5110 { | |
| 5111 no = OP(next) - BRACE_COMPLEX; | |
| 5112 brace_min[no] = OPERAND_MIN(scan); | |
| 5113 brace_max[no] = OPERAND_MAX(scan); | |
| 5114 brace_count[no] = 0; | |
| 5115 } | |
| 5116 else | |
| 5117 { | |
| 5118 EMSG(_(e_internal)); /* Shouldn't happen */ | |
| 180 | 5119 status = RA_FAIL; |
| 7 | 5120 } |
| 5121 } | |
| 5122 break; | |
| 5123 | |
| 5124 case BRACE_COMPLEX + 0: | |
| 5125 case BRACE_COMPLEX + 1: | |
| 5126 case BRACE_COMPLEX + 2: | |
| 5127 case BRACE_COMPLEX + 3: | |
| 5128 case BRACE_COMPLEX + 4: | |
| 5129 case BRACE_COMPLEX + 5: | |
| 5130 case BRACE_COMPLEX + 6: | |
| 5131 case BRACE_COMPLEX + 7: | |
| 5132 case BRACE_COMPLEX + 8: | |
| 5133 case BRACE_COMPLEX + 9: | |
| 5134 { | |
| 5135 no = op - BRACE_COMPLEX; | |
| 5136 ++brace_count[no]; | |
| 5137 | |
| 5138 /* If not matched enough times yet, try one more */ | |
| 5139 if (brace_count[no] <= (brace_min[no] <= brace_max[no] | |
| 180 | 5140 ? brace_min[no] : brace_max[no])) |
| 7 | 5141 { |
| 270 | 5142 rp = regstack_push(RS_BRCPLX_MORE, scan); |
| 180 | 5143 if (rp == NULL) |
| 5144 status = RA_FAIL; | |
| 5145 else | |
| 5146 { | |
| 5147 rp->rs_no = no; | |
| 233 | 5148 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5149 next = OPERAND(scan); |
| 5150 /* We continue and handle the result when done. */ | |
| 5151 } | |
| 5152 break; | |
| 7 | 5153 } |
| 5154 | |
| 5155 /* If matched enough times, may try matching some more */ | |
| 5156 if (brace_min[no] <= brace_max[no]) | |
| 5157 { | |
| 5158 /* Range is the normal way around, use longest match */ | |
| 5159 if (brace_count[no] <= brace_max[no]) | |
| 5160 { | |
| 270 | 5161 rp = regstack_push(RS_BRCPLX_LONG, scan); |
| 180 | 5162 if (rp == NULL) |
| 5163 status = RA_FAIL; | |
| 5164 else | |
| 5165 { | |
| 5166 rp->rs_no = no; | |
| 233 | 5167 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5168 next = OPERAND(scan); |
| 5169 /* We continue and handle the result when done. */ | |
| 5170 } | |
| 7 | 5171 } |
| 5172 } | |
| 5173 else | |
| 5174 { | |
| 5175 /* Range is backwards, use shortest match first */ | |
| 5176 if (brace_count[no] <= brace_min[no]) | |
| 5177 { | |
| 270 | 5178 rp = regstack_push(RS_BRCPLX_SHORT, scan); |
| 180 | 5179 if (rp == NULL) |
| 5180 status = RA_FAIL; | |
| 5181 else | |
| 5182 { | |
| 233 | 5183 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5184 /* We continue and handle the result when done. */ |
| 5185 } | |
| 7 | 5186 } |
| 5187 } | |
| 5188 } | |
| 5189 break; | |
| 5190 | |
| 5191 case BRACE_SIMPLE: | |
| 5192 case STAR: | |
| 5193 case PLUS: | |
| 5194 { | |
| 180 | 5195 regstar_T rst; |
| 7 | 5196 |
| 5197 /* | |
| 5198 * Lookahead to avoid useless match attempts when we know | |
| 5199 * what character comes next. | |
| 5200 */ | |
| 5201 if (OP(next) == EXACTLY) | |
| 5202 { | |
| 180 | 5203 rst.nextb = *OPERAND(next); |
| 7 | 5204 if (ireg_ic) |
| 5205 { | |
| 1347 | 5206 if (MB_ISUPPER(rst.nextb)) |
| 5207 rst.nextb_ic = MB_TOLOWER(rst.nextb); | |
| 7 | 5208 else |
| 1347 | 5209 rst.nextb_ic = MB_TOUPPER(rst.nextb); |
| 7 | 5210 } |
| 5211 else | |
| 180 | 5212 rst.nextb_ic = rst.nextb; |
| 7 | 5213 } |
| 5214 else | |
| 5215 { | |
| 180 | 5216 rst.nextb = NUL; |
| 5217 rst.nextb_ic = NUL; | |
| 7 | 5218 } |
| 5219 if (op != BRACE_SIMPLE) | |
| 5220 { | |
| 180 | 5221 rst.minval = (op == STAR) ? 0 : 1; |
| 5222 rst.maxval = MAX_LIMIT; | |
| 7 | 5223 } |
| 5224 else | |
| 5225 { | |
| 180 | 5226 rst.minval = bl_minval; |
| 5227 rst.maxval = bl_maxval; | |
| 7 | 5228 } |
| 5229 | |
| 5230 /* | |
| 5231 * When maxval > minval, try matching as much as possible, up | |
| 5232 * to maxval. When maxval < minval, try matching at least the | |
| 5233 * minimal number (since the range is backwards, that's also | |
| 5234 * maxval!). | |
| 5235 */ | |
| 180 | 5236 rst.count = regrepeat(OPERAND(scan), rst.maxval); |
| 7 | 5237 if (got_int) |
| 180 | 5238 { |
| 5239 status = RA_FAIL; | |
| 5240 break; | |
| 5241 } | |
| 5242 if (rst.minval <= rst.maxval | |
| 5243 ? rst.count >= rst.minval : rst.count >= rst.maxval) | |
| 7 | 5244 { |
| 180 | 5245 /* It could match. Prepare for trying to match what |
| 5246 * follows. The code is below. Parameters are stored in | |
| 5247 * a regstar_T on the regstack. */ | |
| 212 | 5248 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
| 189 | 5249 { |
| 5250 EMSG(_(e_maxmempat)); | |
| 5251 status = RA_FAIL; | |
| 5252 } | |
| 5253 else if (ga_grow(®stack, sizeof(regstar_T)) == FAIL) | |
| 180 | 5254 status = RA_FAIL; |
| 5255 else | |
| 7 | 5256 { |
| 180 | 5257 regstack.ga_len += sizeof(regstar_T); |
| 270 | 5258 rp = regstack_push(rst.minval <= rst.maxval |
| 233 | 5259 ? RS_STAR_LONG : RS_STAR_SHORT, scan); |
| 180 | 5260 if (rp == NULL) |
| 5261 status = RA_FAIL; | |
| 5262 else | |
| 7 | 5263 { |
| 180 | 5264 *(((regstar_T *)rp) - 1) = rst; |
| 5265 status = RA_BREAK; /* skip the restore bits */ | |
| 7 | 5266 } |
| 5267 } | |
| 5268 } | |
| 5269 else | |
| 180 | 5270 status = RA_NOMATCH; |
| 5271 | |
| 7 | 5272 } |
| 180 | 5273 break; |
| 7 | 5274 |
| 5275 case NOMATCH: | |
| 5276 case MATCH: | |
| 5277 case SUBPAT: | |
| 270 | 5278 rp = regstack_push(RS_NOMATCH, scan); |
| 180 | 5279 if (rp == NULL) |
| 5280 status = RA_FAIL; | |
| 5281 else | |
| 7 | 5282 { |
| 180 | 5283 rp->rs_no = op; |
| 233 | 5284 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5285 next = OPERAND(scan); |
| 5286 /* We continue and handle the result when done. */ | |
| 7 | 5287 } |
| 5288 break; | |
| 5289 | |
| 5290 case BEHIND: | |
| 5291 case NOBEHIND: | |
| 180 | 5292 /* Need a bit of room to store extra positions. */ |
| 212 | 5293 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
| 189 | 5294 { |
| 5295 EMSG(_(e_maxmempat)); | |
| 5296 status = RA_FAIL; | |
| 5297 } | |
| 5298 else if (ga_grow(®stack, sizeof(regbehind_T)) == FAIL) | |
| 180 | 5299 status = RA_FAIL; |
| 5300 else | |
| 7 | 5301 { |
| 180 | 5302 regstack.ga_len += sizeof(regbehind_T); |
| 270 | 5303 rp = regstack_push(RS_BEHIND1, scan); |
| 180 | 5304 if (rp == NULL) |
| 5305 status = RA_FAIL; | |
| 5306 else | |
| 7 | 5307 { |
| 1579 | 5308 /* Need to save the subexpr to be able to restore them |
| 5309 * when there is a match but we don't use it. */ | |
| 5310 save_subexpr(((regbehind_T *)rp) - 1); | |
| 5311 | |
| 180 | 5312 rp->rs_no = op; |
| 233 | 5313 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5314 /* First try if what follows matches. If it does then we |
| 5315 * check the behind match by looping. */ | |
| 7 | 5316 } |
| 5317 } | |
| 180 | 5318 break; |
| 7 | 5319 |
| 5320 case BHPOS: | |
| 5321 if (REG_MULTI) | |
| 5322 { | |
| 5323 if (behind_pos.rs_u.pos.col != (colnr_T)(reginput - regline) | |
| 5324 || behind_pos.rs_u.pos.lnum != reglnum) | |
| 180 | 5325 status = RA_NOMATCH; |
| 7 | 5326 } |
| 5327 else if (behind_pos.rs_u.ptr != reginput) | |
| 180 | 5328 status = RA_NOMATCH; |
| 7 | 5329 break; |
| 5330 | |
| 5331 case NEWL: | |
| 1018 | 5332 if ((c != NUL || !REG_MULTI || reglnum > reg_maxline |
| 5333 || reg_line_lbr) && (c != '\n' || !reg_line_lbr)) | |
| 180 | 5334 status = RA_NOMATCH; |
| 5335 else if (reg_line_lbr) | |
| 7 | 5336 ADVANCE_REGINPUT(); |
| 5337 else | |
| 5338 reg_nextline(); | |
| 5339 break; | |
| 5340 | |
| 5341 case END: | |
| 180 | 5342 status = RA_MATCH; /* Success! */ |
| 5343 break; | |
| 7 | 5344 |
| 5345 default: | |
| 5346 EMSG(_(e_re_corr)); | |
| 5347 #ifdef DEBUG | |
| 5348 printf("Illegal op code %d\n", op); | |
| 5349 #endif | |
| 180 | 5350 status = RA_FAIL; |
| 5351 break; | |
| 7 | 5352 } |
| 5353 } | |
| 5354 | |
| 180 | 5355 /* If we can't continue sequentially, break the inner loop. */ |
| 5356 if (status != RA_CONT) | |
| 5357 break; | |
| 5358 | |
| 5359 /* Continue in inner loop, advance to next item. */ | |
| 7 | 5360 scan = next; |
| 180 | 5361 |
| 5362 } /* end of inner loop */ | |
| 7 | 5363 |
| 5364 /* | |
| 180 | 5365 * If there is something on the regstack execute the code for the state. |
| 233 | 5366 * If the state is popped then loop and use the older state. |
| 7 | 5367 */ |
| 180 | 5368 while (regstack.ga_len > 0 && status != RA_FAIL) |
| 5369 { | |
| 5370 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1; | |
| 5371 switch (rp->rs_state) | |
| 5372 { | |
| 5373 case RS_NOPEN: | |
| 5374 /* Result is passed on as-is, simply pop the state. */ | |
| 270 | 5375 regstack_pop(&scan); |
| 180 | 5376 break; |
| 5377 | |
| 5378 case RS_MOPEN: | |
| 5379 /* Pop the state. Restore pointers when there is no match. */ | |
| 5380 if (status == RA_NOMATCH) | |
| 5381 restore_se(&rp->rs_un.sesave, ®_startpos[rp->rs_no], | |
| 5382 ®_startp[rp->rs_no]); | |
| 270 | 5383 regstack_pop(&scan); |
| 180 | 5384 break; |
| 5385 | |
| 5386 #ifdef FEAT_SYN_HL | |
| 5387 case RS_ZOPEN: | |
| 5388 /* Pop the state. Restore pointers when there is no match. */ | |
| 5389 if (status == RA_NOMATCH) | |
| 5390 restore_se(&rp->rs_un.sesave, ®_startzpos[rp->rs_no], | |
| 5391 ®_startzp[rp->rs_no]); | |
| 270 | 5392 regstack_pop(&scan); |
| 180 | 5393 break; |
| 5394 #endif | |
| 5395 | |
| 5396 case RS_MCLOSE: | |
| 5397 /* Pop the state. Restore pointers when there is no match. */ | |
| 5398 if (status == RA_NOMATCH) | |
| 5399 restore_se(&rp->rs_un.sesave, ®_endpos[rp->rs_no], | |
| 5400 ®_endp[rp->rs_no]); | |
| 270 | 5401 regstack_pop(&scan); |
| 180 | 5402 break; |
| 5403 | |
| 5404 #ifdef FEAT_SYN_HL | |
| 5405 case RS_ZCLOSE: | |
| 5406 /* Pop the state. Restore pointers when there is no match. */ | |
| 5407 if (status == RA_NOMATCH) | |
| 5408 restore_se(&rp->rs_un.sesave, ®_endzpos[rp->rs_no], | |
| 5409 ®_endzp[rp->rs_no]); | |
| 270 | 5410 regstack_pop(&scan); |
| 180 | 5411 break; |
| 5412 #endif | |
| 5413 | |
| 5414 case RS_BRANCH: | |
| 5415 if (status == RA_MATCH) | |
| 5416 /* this branch matched, use it */ | |
| 270 | 5417 regstack_pop(&scan); |
| 180 | 5418 else |
| 5419 { | |
| 5420 if (status != RA_BREAK) | |
| 5421 { | |
| 5422 /* After a non-matching branch: try next one. */ | |
| 233 | 5423 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5424 scan = rp->rs_scan; |
| 5425 } | |
| 5426 if (scan == NULL || OP(scan) != BRANCH) | |
| 5427 { | |
| 5428 /* no more branches, didn't find a match */ | |
| 5429 status = RA_NOMATCH; | |
| 270 | 5430 regstack_pop(&scan); |
| 180 | 5431 } |
| 5432 else | |
| 5433 { | |
| 5434 /* Prepare to try a branch. */ | |
| 5435 rp->rs_scan = regnext(scan); | |
| 233 | 5436 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5437 scan = OPERAND(scan); |
| 5438 } | |
| 5439 } | |
| 5440 break; | |
| 5441 | |
| 5442 case RS_BRCPLX_MORE: | |
| 5443 /* Pop the state. Restore pointers when there is no match. */ | |
| 5444 if (status == RA_NOMATCH) | |
| 5445 { | |
| 233 | 5446 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5447 --brace_count[rp->rs_no]; /* decrement match count */ |
| 5448 } | |
| 270 | 5449 regstack_pop(&scan); |
| 180 | 5450 break; |
| 5451 | |
| 5452 case RS_BRCPLX_LONG: | |
| 5453 /* Pop the state. Restore pointers when there is no match. */ | |
| 5454 if (status == RA_NOMATCH) | |
| 5455 { | |
| 5456 /* There was no match, but we did find enough matches. */ | |
| 233 | 5457 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5458 --brace_count[rp->rs_no]; |
| 5459 /* continue with the items after "\{}" */ | |
| 5460 status = RA_CONT; | |
| 5461 } | |
| 270 | 5462 regstack_pop(&scan); |
| 180 | 5463 if (status == RA_CONT) |
| 5464 scan = regnext(scan); | |
| 5465 break; | |
| 5466 | |
| 5467 case RS_BRCPLX_SHORT: | |
| 5468 /* Pop the state. Restore pointers when there is no match. */ | |
| 5469 if (status == RA_NOMATCH) | |
| 5470 /* There was no match, try to match one more item. */ | |
| 233 | 5471 reg_restore(&rp->rs_un.regsave, &backpos); |
| 270 | 5472 regstack_pop(&scan); |
| 180 | 5473 if (status == RA_NOMATCH) |
| 5474 { | |
| 5475 scan = OPERAND(scan); | |
| 5476 status = RA_CONT; | |
| 5477 } | |
| 5478 break; | |
| 5479 | |
| 5480 case RS_NOMATCH: | |
| 5481 /* Pop the state. If the operand matches for NOMATCH or | |
| 5482 * doesn't match for MATCH/SUBPAT, we fail. Otherwise backup, | |
| 5483 * except for SUBPAT, and continue with the next item. */ | |
| 5484 if (status == (rp->rs_no == NOMATCH ? RA_MATCH : RA_NOMATCH)) | |
| 5485 status = RA_NOMATCH; | |
| 5486 else | |
| 5487 { | |
| 5488 status = RA_CONT; | |
| 233 | 5489 if (rp->rs_no != SUBPAT) /* zero-width */ |
| 5490 reg_restore(&rp->rs_un.regsave, &backpos); | |
| 180 | 5491 } |
| 270 | 5492 regstack_pop(&scan); |
| 180 | 5493 if (status == RA_CONT) |
| 5494 scan = regnext(scan); | |
| 5495 break; | |
| 5496 | |
| 5497 case RS_BEHIND1: | |
| 5498 if (status == RA_NOMATCH) | |
| 5499 { | |
| 270 | 5500 regstack_pop(&scan); |
| 180 | 5501 regstack.ga_len -= sizeof(regbehind_T); |
| 5502 } | |
| 5503 else | |
| 5504 { | |
| 5505 /* The stuff after BEHIND/NOBEHIND matches. Now try if | |
| 5506 * the behind part does (not) match before the current | |
| 5507 * position in the input. This must be done at every | |
| 5508 * position in the input and checking if the match ends at | |
| 5509 * the current position. */ | |
| 5510 | |
| 5511 /* save the position after the found match for next */ | |
| 233 | 5512 reg_save(&(((regbehind_T *)rp) - 1)->save_after, &backpos); |
| 180 | 5513 |
|
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|
5514 /* Start looking for a match with operand at the current |
| 1209 | 5515 * position. Go back one character until we find the |
| 180 | 5516 * result, hitting the start of the line or the previous |
| 5517 * line (for multi-line matching). | |
| 5518 * Set behind_pos to where the match should end, BHPOS | |
| 5519 * will match it. Save the current value. */ | |
| 5520 (((regbehind_T *)rp) - 1)->save_behind = behind_pos; | |
| 5521 behind_pos = rp->rs_un.regsave; | |
| 5522 | |
| 5523 rp->rs_state = RS_BEHIND2; | |
| 5524 | |
| 233 | 5525 reg_restore(&rp->rs_un.regsave, &backpos); |
|
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|
5526 scan = OPERAND(rp->rs_scan) + 4; |
| 180 | 5527 } |
| 5528 break; | |
| 5529 | |
| 5530 case RS_BEHIND2: | |
| 5531 /* | |
| 5532 * Looping for BEHIND / NOBEHIND match. | |
| 5533 */ | |
| 5534 if (status == RA_MATCH && reg_save_equal(&behind_pos)) | |
| 5535 { | |
| 5536 /* found a match that ends where "next" started */ | |
| 5537 behind_pos = (((regbehind_T *)rp) - 1)->save_behind; | |
| 5538 if (rp->rs_no == BEHIND) | |
| 233 | 5539 reg_restore(&(((regbehind_T *)rp) - 1)->save_after, |
| 5540 &backpos); | |
| 180 | 5541 else |
| 1579 | 5542 { |
| 5543 /* But we didn't want a match. Need to restore the | |
| 5544 * subexpr, because what follows matched, so they have | |
| 5545 * been set. */ | |
| 180 | 5546 status = RA_NOMATCH; |
| 1579 | 5547 restore_subexpr(((regbehind_T *)rp) - 1); |
| 5548 } | |
| 270 | 5549 regstack_pop(&scan); |
| 180 | 5550 regstack.ga_len -= sizeof(regbehind_T); |
| 5551 } | |
| 5552 else | |
| 5553 { | |
|
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|
5554 long limit; |
|
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|
5555 |
| 1579 | 5556 /* No match or a match that doesn't end where we want it: Go |
| 5557 * back one character. May go to previous line once. */ | |
| 180 | 5558 no = OK; |
|
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|
5559 limit = OPERAND_MIN(rp->rs_scan); |
| 180 | 5560 if (REG_MULTI) |
| 5561 { | |
|
4682
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|
5562 if (limit > 0 |
|
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diff
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|
5563 && ((rp->rs_un.regsave.rs_u.pos.lnum |
|
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diff
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|
5564 < behind_pos.rs_u.pos.lnum |
|
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diff
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|
5565 ? (colnr_T)STRLEN(regline) |
|
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|
5566 : behind_pos.rs_u.pos.col) |
|
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diff
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|
5567 - rp->rs_un.regsave.rs_u.pos.col >= limit)) |
|
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|
5568 no = FAIL; |
|
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|
5569 else if (rp->rs_un.regsave.rs_u.pos.col == 0) |
| 180 | 5570 { |
| 5571 if (rp->rs_un.regsave.rs_u.pos.lnum | |
| 5572 < behind_pos.rs_u.pos.lnum | |
| 5573 || reg_getline( | |
| 5574 --rp->rs_un.regsave.rs_u.pos.lnum) | |
| 5575 == NULL) | |
| 5576 no = FAIL; | |
| 5577 else | |
| 5578 { | |
| 233 | 5579 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5580 rp->rs_un.regsave.rs_u.pos.col = |
| 5581 (colnr_T)STRLEN(regline); | |
| 5582 } | |
| 5583 } | |
| 5584 else | |
|
4579
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|
5585 { |
| 4176 | 5586 #ifdef FEAT_MBYTE |
|
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|
5587 if (has_mbyte) |
|
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|
5588 rp->rs_un.regsave.rs_u.pos.col -= |
|
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|
5589 (*mb_head_off)(regline, regline |
| 4176 | 5590 + rp->rs_un.regsave.rs_u.pos.col - 1) + 1; |
|
4579
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|
5591 else |
|
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|
5592 #endif |
|
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|
5593 --rp->rs_un.regsave.rs_u.pos.col; |
|
7a2be4a39423
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|
5594 } |
| 180 | 5595 } |
| 5596 else | |
| 5597 { | |
| 5598 if (rp->rs_un.regsave.rs_u.ptr == regline) | |
| 5599 no = FAIL; | |
| 5600 else | |
|
4579
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|
5601 { |
|
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4505
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|
5602 mb_ptr_back(regline, rp->rs_un.regsave.rs_u.ptr); |
|
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|
5603 if (limit > 0 && (long)(behind_pos.rs_u.ptr |
|
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|
5604 - rp->rs_un.regsave.rs_u.ptr) > limit) |
|
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|
5605 no = FAIL; |
|
7a2be4a39423
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diff
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|
5606 } |
| 180 | 5607 } |
| 5608 if (no == OK) | |
| 5609 { | |
| 5610 /* Advanced, prepare for finding match again. */ | |
| 233 | 5611 reg_restore(&rp->rs_un.regsave, &backpos); |
|
4579
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4505
diff
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|
5612 scan = OPERAND(rp->rs_scan) + 4; |
| 1579 | 5613 if (status == RA_MATCH) |
| 5614 { | |
| 5615 /* We did match, so subexpr may have been changed, | |
| 5616 * need to restore them for the next try. */ | |
| 5617 status = RA_NOMATCH; | |
| 5618 restore_subexpr(((regbehind_T *)rp) - 1); | |
| 5619 } | |
| 180 | 5620 } |
| 5621 else | |
| 5622 { | |
| 5623 /* Can't advance. For NOBEHIND that's a match. */ | |
| 5624 behind_pos = (((regbehind_T *)rp) - 1)->save_behind; | |
| 5625 if (rp->rs_no == NOBEHIND) | |
| 5626 { | |
| 233 | 5627 reg_restore(&(((regbehind_T *)rp) - 1)->save_after, |
| 5628 &backpos); | |
| 180 | 5629 status = RA_MATCH; |
| 5630 } | |
| 5631 else | |
| 1579 | 5632 { |
| 5633 /* We do want a proper match. Need to restore the | |
| 5634 * subexpr if we had a match, because they may have | |
| 5635 * been set. */ | |
| 5636 if (status == RA_MATCH) | |
| 5637 { | |
| 5638 status = RA_NOMATCH; | |
| 5639 restore_subexpr(((regbehind_T *)rp) - 1); | |
| 5640 } | |
| 5641 } | |
| 270 | 5642 regstack_pop(&scan); |
| 180 | 5643 regstack.ga_len -= sizeof(regbehind_T); |
| 5644 } | |
| 5645 } | |
| 5646 break; | |
| 5647 | |
| 5648 case RS_STAR_LONG: | |
| 5649 case RS_STAR_SHORT: | |
| 5650 { | |
| 5651 regstar_T *rst = ((regstar_T *)rp) - 1; | |
| 5652 | |
| 5653 if (status == RA_MATCH) | |
| 5654 { | |
| 270 | 5655 regstack_pop(&scan); |
| 180 | 5656 regstack.ga_len -= sizeof(regstar_T); |
| 5657 break; | |
| 5658 } | |
| 5659 | |
| 5660 /* Tried once already, restore input pointers. */ | |
| 5661 if (status != RA_BREAK) | |
| 233 | 5662 reg_restore(&rp->rs_un.regsave, &backpos); |
| 180 | 5663 |
| 5664 /* Repeat until we found a position where it could match. */ | |
| 5665 for (;;) | |
| 5666 { | |
| 5667 if (status != RA_BREAK) | |
| 5668 { | |
| 5669 /* Tried first position already, advance. */ | |
| 5670 if (rp->rs_state == RS_STAR_LONG) | |
| 5671 { | |
| 685 | 5672 /* Trying for longest match, but couldn't or |
| 5673 * didn't match -- back up one char. */ | |
| 180 | 5674 if (--rst->count < rst->minval) |
| 5675 break; | |
| 5676 if (reginput == regline) | |
| 5677 { | |
| 5678 /* backup to last char of previous line */ | |
| 5679 --reglnum; | |
| 5680 regline = reg_getline(reglnum); | |
| 5681 /* Just in case regrepeat() didn't count | |
| 5682 * right. */ | |
| 5683 if (regline == NULL) | |
| 5684 break; | |
| 5685 reginput = regline + STRLEN(regline); | |
| 5686 fast_breakcheck(); | |
| 5687 } | |
| 5688 else | |
| 5689 mb_ptr_back(regline, reginput); | |
| 5690 } | |
| 5691 else | |
| 5692 { | |
| 5693 /* Range is backwards, use shortest match first. | |
| 5694 * Careful: maxval and minval are exchanged! | |
| 5695 * Couldn't or didn't match: try advancing one | |
| 5696 * char. */ | |
| 5697 if (rst->count == rst->minval | |
| 5698 || regrepeat(OPERAND(rp->rs_scan), 1L) == 0) | |
| 5699 break; | |
| 5700 ++rst->count; | |
| 5701 } | |
| 5702 if (got_int) | |
| 5703 break; | |
| 5704 } | |
| 5705 else | |
| 5706 status = RA_NOMATCH; | |
| 5707 | |
| 5708 /* If it could match, try it. */ | |
| 5709 if (rst->nextb == NUL || *reginput == rst->nextb | |
| 5710 || *reginput == rst->nextb_ic) | |
| 5711 { | |
| 233 | 5712 reg_save(&rp->rs_un.regsave, &backpos); |
| 180 | 5713 scan = regnext(rp->rs_scan); |
| 5714 status = RA_CONT; | |
| 5715 break; | |
| 5716 } | |
| 5717 } | |
| 5718 if (status != RA_CONT) | |
| 5719 { | |
| 5720 /* Failed. */ | |
| 270 | 5721 regstack_pop(&scan); |
| 180 | 5722 regstack.ga_len -= sizeof(regstar_T); |
| 5723 status = RA_NOMATCH; | |
| 5724 } | |
| 5725 } | |
| 5726 break; | |
| 5727 } | |
| 5728 | |
| 685 | 5729 /* If we want to continue the inner loop or didn't pop a state |
| 5730 * continue matching loop */ | |
| 180 | 5731 if (status == RA_CONT || rp == (regitem_T *) |
| 5732 ((char *)regstack.ga_data + regstack.ga_len) - 1) | |
| 5733 break; | |
| 5734 } | |
| 5735 | |
| 189 | 5736 /* May need to continue with the inner loop, starting at "scan". */ |
| 180 | 5737 if (status == RA_CONT) |
| 5738 continue; | |
| 5739 | |
| 5740 /* | |
| 5741 * If the regstack is empty or something failed we are done. | |
| 5742 */ | |
| 5743 if (regstack.ga_len == 0 || status == RA_FAIL) | |
| 5744 { | |
| 5745 if (scan == NULL) | |
| 5746 { | |
| 5747 /* | |
| 5748 * We get here only if there's trouble -- normally "case END" is | |
| 5749 * the terminating point. | |
| 5750 */ | |
| 5751 EMSG(_(e_re_corr)); | |
| 7 | 5752 #ifdef DEBUG |
| 180 | 5753 printf("Premature EOL\n"); |
| 7 | 5754 #endif |
| 180 | 5755 } |
| 189 | 5756 if (status == RA_FAIL) |
| 5757 got_int = TRUE; | |
| 180 | 5758 return (status == RA_MATCH); |
| 5759 } | |
| 5760 | |
| 5761 } /* End of loop until the regstack is empty. */ | |
| 5762 | |
| 5763 /* NOTREACHED */ | |
| 5764 } | |
| 5765 | |
| 5766 /* | |
| 5767 * Push an item onto the regstack. | |
| 5768 * Returns pointer to new item. Returns NULL when out of memory. | |
| 5769 */ | |
| 5770 static regitem_T * | |
| 270 | 5771 regstack_push(state, scan) |
| 180 | 5772 regstate_T state; |
| 5773 char_u *scan; | |
| 5774 { | |
| 5775 regitem_T *rp; | |
| 5776 | |
| 270 | 5777 if ((long)((unsigned)regstack.ga_len >> 10) >= p_mmp) |
| 189 | 5778 { |
| 5779 EMSG(_(e_maxmempat)); | |
| 5780 return NULL; | |
| 5781 } | |
| 270 | 5782 if (ga_grow(®stack, sizeof(regitem_T)) == FAIL) |
| 180 | 5783 return NULL; |
| 5784 | |
| 270 | 5785 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len); |
| 180 | 5786 rp->rs_state = state; |
| 5787 rp->rs_scan = scan; | |
| 5788 | |
| 270 | 5789 regstack.ga_len += sizeof(regitem_T); |
| 180 | 5790 return rp; |
| 5791 } | |
| 5792 | |
| 5793 /* | |
| 5794 * Pop an item from the regstack. | |
| 5795 */ | |
| 5796 static void | |
| 270 | 5797 regstack_pop(scan) |
| 180 | 5798 char_u **scan; |
| 5799 { | |
| 5800 regitem_T *rp; | |
| 5801 | |
| 270 | 5802 rp = (regitem_T *)((char *)regstack.ga_data + regstack.ga_len) - 1; |
| 180 | 5803 *scan = rp->rs_scan; |
| 5804 | |
| 270 | 5805 regstack.ga_len -= sizeof(regitem_T); |
| 7 | 5806 } |
| 5807 | |
| 5808 /* | |
| 5809 * regrepeat - repeatedly match something simple, return how many. | |
| 5810 * Advances reginput (and reglnum) to just after the matched chars. | |
| 5811 */ | |
| 5812 static int | |
| 5813 regrepeat(p, maxcount) | |
| 5814 char_u *p; | |
| 5815 long maxcount; /* maximum number of matches allowed */ | |
| 5816 { | |
| 5817 long count = 0; | |
| 5818 char_u *scan; | |
| 5819 char_u *opnd; | |
| 5820 int mask; | |
| 5821 int testval = 0; | |
| 5822 | |
| 5823 scan = reginput; /* Make local copy of reginput for speed. */ | |
| 5824 opnd = OPERAND(p); | |
| 5825 switch (OP(p)) | |
| 5826 { | |
| 5827 case ANY: | |
| 5828 case ANY + ADD_NL: | |
| 5829 while (count < maxcount) | |
| 5830 { | |
| 5831 /* Matching anything means we continue until end-of-line (or | |
| 5832 * end-of-file for ANY + ADD_NL), only limited by maxcount. */ | |
| 5833 while (*scan != NUL && count < maxcount) | |
| 5834 { | |
| 5835 ++count; | |
| 39 | 5836 mb_ptr_adv(scan); |
| 7 | 5837 } |
| 1018 | 5838 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5839 || reg_line_lbr || count == maxcount) | |
| 7 | 5840 break; |
| 5841 ++count; /* count the line-break */ | |
| 5842 reg_nextline(); | |
| 5843 scan = reginput; | |
| 5844 if (got_int) | |
| 5845 break; | |
| 5846 } | |
| 5847 break; | |
| 5848 | |
| 5849 case IDENT: | |
| 5850 case IDENT + ADD_NL: | |
| 5851 testval = TRUE; | |
| 5852 /*FALLTHROUGH*/ | |
| 5853 case SIDENT: | |
| 5854 case SIDENT + ADD_NL: | |
| 5855 while (count < maxcount) | |
| 5856 { | |
| 4466 | 5857 if (vim_isIDc(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan))) |
| 7 | 5858 { |
| 39 | 5859 mb_ptr_adv(scan); |
| 7 | 5860 } |
| 5861 else if (*scan == NUL) | |
| 5862 { | |
| 1018 | 5863 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5864 || reg_line_lbr) | |
| 7 | 5865 break; |
| 5866 reg_nextline(); | |
| 5867 scan = reginput; | |
| 5868 if (got_int) | |
| 5869 break; | |
| 5870 } | |
| 5871 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5872 ++scan; | |
| 5873 else | |
| 5874 break; | |
| 5875 ++count; | |
| 5876 } | |
| 5877 break; | |
| 5878 | |
| 5879 case KWORD: | |
| 5880 case KWORD + ADD_NL: | |
| 5881 testval = TRUE; | |
| 5882 /*FALLTHROUGH*/ | |
| 5883 case SKWORD: | |
| 5884 case SKWORD + ADD_NL: | |
| 5885 while (count < maxcount) | |
| 5886 { | |
| 4069 | 5887 if (vim_iswordp_buf(scan, reg_buf) |
| 5888 && (testval || !VIM_ISDIGIT(*scan))) | |
| 7 | 5889 { |
| 39 | 5890 mb_ptr_adv(scan); |
| 7 | 5891 } |
| 5892 else if (*scan == NUL) | |
| 5893 { | |
| 1018 | 5894 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5895 || reg_line_lbr) | |
| 7 | 5896 break; |
| 5897 reg_nextline(); | |
| 5898 scan = reginput; | |
| 5899 if (got_int) | |
| 5900 break; | |
| 5901 } | |
| 5902 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5903 ++scan; | |
| 5904 else | |
| 5905 break; | |
| 5906 ++count; | |
| 5907 } | |
| 5908 break; | |
| 5909 | |
| 5910 case FNAME: | |
| 5911 case FNAME + ADD_NL: | |
| 5912 testval = TRUE; | |
| 5913 /*FALLTHROUGH*/ | |
| 5914 case SFNAME: | |
| 5915 case SFNAME + ADD_NL: | |
| 5916 while (count < maxcount) | |
| 5917 { | |
| 4466 | 5918 if (vim_isfilec(PTR2CHAR(scan)) && (testval || !VIM_ISDIGIT(*scan))) |
| 7 | 5919 { |
| 39 | 5920 mb_ptr_adv(scan); |
| 7 | 5921 } |
| 5922 else if (*scan == NUL) | |
| 5923 { | |
| 1018 | 5924 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5925 || reg_line_lbr) | |
| 7 | 5926 break; |
| 5927 reg_nextline(); | |
| 5928 scan = reginput; | |
| 5929 if (got_int) | |
| 5930 break; | |
| 5931 } | |
| 5932 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5933 ++scan; | |
| 5934 else | |
| 5935 break; | |
| 5936 ++count; | |
| 5937 } | |
| 5938 break; | |
| 5939 | |
| 5940 case PRINT: | |
| 5941 case PRINT + ADD_NL: | |
| 5942 testval = TRUE; | |
| 5943 /*FALLTHROUGH*/ | |
| 5944 case SPRINT: | |
| 5945 case SPRINT + ADD_NL: | |
| 5946 while (count < maxcount) | |
| 5947 { | |
| 5948 if (*scan == NUL) | |
| 5949 { | |
| 1018 | 5950 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5951 || reg_line_lbr) | |
| 7 | 5952 break; |
| 5953 reg_nextline(); | |
| 5954 scan = reginput; | |
| 5955 if (got_int) | |
| 5956 break; | |
| 5957 } | |
|
5221
9982ec574beb
updated for version 7.4a.036
Bram Moolenaar <bram@vim.org>
parents:
4901
diff
changeset
|
5958 else if (vim_isprintc(PTR2CHAR(scan)) == 1 |
|
9982ec574beb
updated for version 7.4a.036
Bram Moolenaar <bram@vim.org>
parents:
4901
diff
changeset
|
5959 && (testval || !VIM_ISDIGIT(*scan))) |
| 7 | 5960 { |
| 39 | 5961 mb_ptr_adv(scan); |
| 7 | 5962 } |
| 5963 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 5964 ++scan; | |
| 5965 else | |
| 5966 break; | |
| 5967 ++count; | |
| 5968 } | |
| 5969 break; | |
| 5970 | |
| 5971 case WHITE: | |
| 5972 case WHITE + ADD_NL: | |
| 5973 testval = mask = RI_WHITE; | |
| 5974 do_class: | |
| 5975 while (count < maxcount) | |
| 5976 { | |
| 5977 #ifdef FEAT_MBYTE | |
| 5978 int l; | |
| 5979 #endif | |
| 5980 if (*scan == NUL) | |
| 5981 { | |
| 1018 | 5982 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 5983 || reg_line_lbr) | |
| 7 | 5984 break; |
| 5985 reg_nextline(); | |
| 5986 scan = reginput; | |
| 5987 if (got_int) | |
| 5988 break; | |
| 5989 } | |
| 5990 #ifdef FEAT_MBYTE | |
| 474 | 5991 else if (has_mbyte && (l = (*mb_ptr2len)(scan)) > 1) |
| 7 | 5992 { |
| 5993 if (testval != 0) | |
| 5994 break; | |
| 5995 scan += l; | |
| 5996 } | |
| 5997 #endif | |
| 5998 else if ((class_tab[*scan] & mask) == testval) | |
| 5999 ++scan; | |
| 6000 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 6001 ++scan; | |
| 6002 else | |
| 6003 break; | |
| 6004 ++count; | |
| 6005 } | |
| 6006 break; | |
| 6007 | |
| 6008 case NWHITE: | |
| 6009 case NWHITE + ADD_NL: | |
| 6010 mask = RI_WHITE; | |
| 6011 goto do_class; | |
| 6012 case DIGIT: | |
| 6013 case DIGIT + ADD_NL: | |
| 6014 testval = mask = RI_DIGIT; | |
| 6015 goto do_class; | |
| 6016 case NDIGIT: | |
| 6017 case NDIGIT + ADD_NL: | |
| 6018 mask = RI_DIGIT; | |
| 6019 goto do_class; | |
| 6020 case HEX: | |
| 6021 case HEX + ADD_NL: | |
| 6022 testval = mask = RI_HEX; | |
| 6023 goto do_class; | |
| 6024 case NHEX: | |
| 6025 case NHEX + ADD_NL: | |
| 6026 mask = RI_HEX; | |
| 6027 goto do_class; | |
| 6028 case OCTAL: | |
| 6029 case OCTAL + ADD_NL: | |
| 6030 testval = mask = RI_OCTAL; | |
| 6031 goto do_class; | |
| 6032 case NOCTAL: | |
| 6033 case NOCTAL + ADD_NL: | |
| 6034 mask = RI_OCTAL; | |
| 6035 goto do_class; | |
| 6036 case WORD: | |
| 6037 case WORD + ADD_NL: | |
| 6038 testval = mask = RI_WORD; | |
| 6039 goto do_class; | |
| 6040 case NWORD: | |
| 6041 case NWORD + ADD_NL: | |
| 6042 mask = RI_WORD; | |
| 6043 goto do_class; | |
| 6044 case HEAD: | |
| 6045 case HEAD + ADD_NL: | |
| 6046 testval = mask = RI_HEAD; | |
| 6047 goto do_class; | |
| 6048 case NHEAD: | |
| 6049 case NHEAD + ADD_NL: | |
| 6050 mask = RI_HEAD; | |
| 6051 goto do_class; | |
| 6052 case ALPHA: | |
| 6053 case ALPHA + ADD_NL: | |
| 6054 testval = mask = RI_ALPHA; | |
| 6055 goto do_class; | |
| 6056 case NALPHA: | |
| 6057 case NALPHA + ADD_NL: | |
| 6058 mask = RI_ALPHA; | |
| 6059 goto do_class; | |
| 6060 case LOWER: | |
| 6061 case LOWER + ADD_NL: | |
| 6062 testval = mask = RI_LOWER; | |
| 6063 goto do_class; | |
| 6064 case NLOWER: | |
| 6065 case NLOWER + ADD_NL: | |
| 6066 mask = RI_LOWER; | |
| 6067 goto do_class; | |
| 6068 case UPPER: | |
| 6069 case UPPER + ADD_NL: | |
| 6070 testval = mask = RI_UPPER; | |
| 6071 goto do_class; | |
| 6072 case NUPPER: | |
| 6073 case NUPPER + ADD_NL: | |
| 6074 mask = RI_UPPER; | |
| 6075 goto do_class; | |
| 6076 | |
| 6077 case EXACTLY: | |
| 6078 { | |
| 6079 int cu, cl; | |
| 6080 | |
| 6081 /* This doesn't do a multi-byte character, because a MULTIBYTECODE | |
| 1347 | 6082 * would have been used for it. It does handle single-byte |
| 6083 * characters, such as latin1. */ | |
| 7 | 6084 if (ireg_ic) |
| 6085 { | |
| 1347 | 6086 cu = MB_TOUPPER(*opnd); |
| 6087 cl = MB_TOLOWER(*opnd); | |
| 7 | 6088 while (count < maxcount && (*scan == cu || *scan == cl)) |
| 6089 { | |
| 6090 count++; | |
| 6091 scan++; | |
| 6092 } | |
| 6093 } | |
| 6094 else | |
| 6095 { | |
| 6096 cu = *opnd; | |
| 6097 while (count < maxcount && *scan == cu) | |
| 6098 { | |
| 6099 count++; | |
| 6100 scan++; | |
| 6101 } | |
| 6102 } | |
| 6103 break; | |
| 6104 } | |
| 6105 | |
| 6106 #ifdef FEAT_MBYTE | |
| 6107 case MULTIBYTECODE: | |
| 6108 { | |
| 6109 int i, len, cf = 0; | |
| 6110 | |
| 6111 /* Safety check (just in case 'encoding' was changed since | |
| 6112 * compiling the program). */ | |
| 474 | 6113 if ((len = (*mb_ptr2len)(opnd)) > 1) |
| 7 | 6114 { |
| 6115 if (ireg_ic && enc_utf8) | |
| 6116 cf = utf_fold(utf_ptr2char(opnd)); | |
| 6785 | 6117 while (count < maxcount && (*mb_ptr2len)(scan) >= len) |
| 7 | 6118 { |
| 6119 for (i = 0; i < len; ++i) | |
| 6120 if (opnd[i] != scan[i]) | |
| 6121 break; | |
| 6122 if (i < len && (!ireg_ic || !enc_utf8 | |
| 6123 || utf_fold(utf_ptr2char(scan)) != cf)) | |
| 6124 break; | |
| 6125 scan += len; | |
| 6126 ++count; | |
| 6127 } | |
| 6128 } | |
| 6129 } | |
| 6130 break; | |
| 6131 #endif | |
| 6132 | |
| 6133 case ANYOF: | |
| 6134 case ANYOF + ADD_NL: | |
| 6135 testval = TRUE; | |
| 6136 /*FALLTHROUGH*/ | |
| 6137 | |
| 6138 case ANYBUT: | |
| 6139 case ANYBUT + ADD_NL: | |
| 6140 while (count < maxcount) | |
| 6141 { | |
| 6142 #ifdef FEAT_MBYTE | |
| 6143 int len; | |
| 6144 #endif | |
| 6145 if (*scan == NUL) | |
| 6146 { | |
| 1018 | 6147 if (!REG_MULTI || !WITH_NL(OP(p)) || reglnum > reg_maxline |
| 6148 || reg_line_lbr) | |
| 7 | 6149 break; |
| 6150 reg_nextline(); | |
| 6151 scan = reginput; | |
| 6152 if (got_int) | |
| 6153 break; | |
| 6154 } | |
| 6155 else if (reg_line_lbr && *scan == '\n' && WITH_NL(OP(p))) | |
| 6156 ++scan; | |
| 6157 #ifdef FEAT_MBYTE | |
| 474 | 6158 else if (has_mbyte && (len = (*mb_ptr2len)(scan)) > 1) |
| 7 | 6159 { |
| 6160 if ((cstrchr(opnd, (*mb_ptr2char)(scan)) == NULL) == testval) | |
| 6161 break; | |
| 6162 scan += len; | |
| 6163 } | |
| 6164 #endif | |
| 6165 else | |
| 6166 { | |
| 6167 if ((cstrchr(opnd, *scan) == NULL) == testval) | |
| 6168 break; | |
| 6169 ++scan; | |
| 6170 } | |
| 6171 ++count; | |
| 6172 } | |
| 6173 break; | |
| 6174 | |
| 6175 case NEWL: | |
| 6176 while (count < maxcount | |
| 1018 | 6177 && ((*scan == NUL && reglnum <= reg_maxline && !reg_line_lbr |
| 6178 && REG_MULTI) || (*scan == '\n' && reg_line_lbr))) | |
| 7 | 6179 { |
| 6180 count++; | |
| 6181 if (reg_line_lbr) | |
| 6182 ADVANCE_REGINPUT(); | |
| 6183 else | |
| 6184 reg_nextline(); | |
| 6185 scan = reginput; | |
| 6186 if (got_int) | |
| 6187 break; | |
| 6188 } | |
| 6189 break; | |
| 6190 | |
| 6191 default: /* Oh dear. Called inappropriately. */ | |
| 6192 EMSG(_(e_re_corr)); | |
| 6193 #ifdef DEBUG | |
| 6194 printf("Called regrepeat with op code %d\n", OP(p)); | |
| 6195 #endif | |
| 6196 break; | |
| 6197 } | |
| 6198 | |
| 6199 reginput = scan; | |
| 6200 | |
| 6201 return (int)count; | |
| 6202 } | |
| 6203 | |
| 6204 /* | |
| 6205 * regnext - dig the "next" pointer out of a node | |
| 2010 | 6206 * Returns NULL when calculating size, when there is no next item and when |
| 6207 * there is an error. | |
| 7 | 6208 */ |
| 6209 static char_u * | |
| 6210 regnext(p) | |
| 6211 char_u *p; | |
| 6212 { | |
| 6213 int offset; | |
| 6214 | |
| 2010 | 6215 if (p == JUST_CALC_SIZE || reg_toolong) |
| 7 | 6216 return NULL; |
| 6217 | |
| 6218 offset = NEXT(p); | |
| 6219 if (offset == 0) | |
| 6220 return NULL; | |
| 6221 | |
| 233 | 6222 if (OP(p) == BACK) |
| 7 | 6223 return p - offset; |
| 6224 else | |
| 6225 return p + offset; | |
| 6226 } | |
| 6227 | |
| 6228 /* | |
| 6229 * Check the regexp program for its magic number. | |
| 6230 * Return TRUE if it's wrong. | |
| 6231 */ | |
| 6232 static int | |
| 6233 prog_magic_wrong() | |
| 6234 { | |
| 4444 | 6235 regprog_T *prog; |
| 6236 | |
| 6237 prog = REG_MULTI ? reg_mmatch->regprog : reg_match->regprog; | |
| 6238 if (prog->engine == &nfa_regengine) | |
| 6239 /* For NFA matcher we don't check the magic */ | |
| 6240 return FALSE; | |
| 6241 | |
| 6242 if (UCHARAT(((bt_regprog_T *)prog)->program) != REGMAGIC) | |
| 7 | 6243 { |
| 6244 EMSG(_(e_re_corr)); | |
| 6245 return TRUE; | |
| 6246 } | |
| 6247 return FALSE; | |
| 6248 } | |
| 6249 | |
| 6250 /* | |
| 6251 * Cleanup the subexpressions, if this wasn't done yet. | |
| 6252 * This construction is used to clear the subexpressions only when they are | |
| 6253 * used (to increase speed). | |
| 6254 */ | |
| 6255 static void | |
| 6256 cleanup_subexpr() | |
| 6257 { | |
| 6258 if (need_clear_subexpr) | |
| 6259 { | |
| 6260 if (REG_MULTI) | |
| 6261 { | |
| 6262 /* Use 0xff to set lnum to -1 */ | |
| 6263 vim_memset(reg_startpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6264 vim_memset(reg_endpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6265 } | |
| 6266 else | |
| 6267 { | |
| 6268 vim_memset(reg_startp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6269 vim_memset(reg_endp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6270 } | |
| 6271 need_clear_subexpr = FALSE; | |
| 6272 } | |
| 6273 } | |
| 6274 | |
| 6275 #ifdef FEAT_SYN_HL | |
| 6276 static void | |
| 6277 cleanup_zsubexpr() | |
| 6278 { | |
| 6279 if (need_clear_zsubexpr) | |
| 6280 { | |
| 6281 if (REG_MULTI) | |
| 6282 { | |
| 6283 /* Use 0xff to set lnum to -1 */ | |
| 6284 vim_memset(reg_startzpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6285 vim_memset(reg_endzpos, 0xff, sizeof(lpos_T) * NSUBEXP); | |
| 6286 } | |
| 6287 else | |
| 6288 { | |
| 6289 vim_memset(reg_startzp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6290 vim_memset(reg_endzp, 0, sizeof(char_u *) * NSUBEXP); | |
| 6291 } | |
| 6292 need_clear_zsubexpr = FALSE; | |
| 6293 } | |
| 6294 } | |
| 6295 #endif | |
| 6296 | |
| 6297 /* | |
| 1579 | 6298 * Save the current subexpr to "bp", so that they can be restored |
| 6299 * later by restore_subexpr(). | |
| 6300 */ | |
| 6301 static void | |
| 6302 save_subexpr(bp) | |
| 6303 regbehind_T *bp; | |
| 6304 { | |
| 6305 int i; | |
| 6306 | |
| 1602 | 6307 /* When "need_clear_subexpr" is set we don't need to save the values, only |
| 6308 * remember that this flag needs to be set again when restoring. */ | |
| 6309 bp->save_need_clear_subexpr = need_clear_subexpr; | |
| 6310 if (!need_clear_subexpr) | |
| 1579 | 6311 { |
| 1602 | 6312 for (i = 0; i < NSUBEXP; ++i) |
| 1579 | 6313 { |
| 1602 | 6314 if (REG_MULTI) |
| 6315 { | |
| 6316 bp->save_start[i].se_u.pos = reg_startpos[i]; | |
| 6317 bp->save_end[i].se_u.pos = reg_endpos[i]; | |
| 6318 } | |
| 6319 else | |
| 6320 { | |
| 6321 bp->save_start[i].se_u.ptr = reg_startp[i]; | |
| 6322 bp->save_end[i].se_u.ptr = reg_endp[i]; | |
| 6323 } | |
| 1579 | 6324 } |
| 6325 } | |
| 6326 } | |
| 6327 | |
| 6328 /* | |
| 6329 * Restore the subexpr from "bp". | |
| 6330 */ | |
| 6331 static void | |
| 6332 restore_subexpr(bp) | |
| 6333 regbehind_T *bp; | |
| 6334 { | |
| 6335 int i; | |
| 6336 | |
| 1602 | 6337 /* Only need to restore saved values when they are not to be cleared. */ |
| 6338 need_clear_subexpr = bp->save_need_clear_subexpr; | |
| 6339 if (!need_clear_subexpr) | |
| 1579 | 6340 { |
| 1602 | 6341 for (i = 0; i < NSUBEXP; ++i) |
| 1579 | 6342 { |
| 1602 | 6343 if (REG_MULTI) |
| 6344 { | |
| 6345 reg_startpos[i] = bp->save_start[i].se_u.pos; | |
| 6346 reg_endpos[i] = bp->save_end[i].se_u.pos; | |
| 6347 } | |
| 6348 else | |
| 6349 { | |
| 6350 reg_startp[i] = bp->save_start[i].se_u.ptr; | |
| 6351 reg_endp[i] = bp->save_end[i].se_u.ptr; | |
| 6352 } | |
| 1579 | 6353 } |
| 6354 } | |
| 6355 } | |
| 6356 | |
| 6357 /* | |
| 7 | 6358 * Advance reglnum, regline and reginput to the next line. |
| 6359 */ | |
| 6360 static void | |
| 6361 reg_nextline() | |
| 6362 { | |
| 6363 regline = reg_getline(++reglnum); | |
| 6364 reginput = regline; | |
| 6365 fast_breakcheck(); | |
| 6366 } | |
| 6367 | |
| 6368 /* | |
| 6369 * Save the input line and position in a regsave_T. | |
| 6370 */ | |
| 6371 static void | |
| 233 | 6372 reg_save(save, gap) |
| 7 | 6373 regsave_T *save; |
| 233 | 6374 garray_T *gap; |
| 7 | 6375 { |
| 6376 if (REG_MULTI) | |
| 6377 { | |
| 6378 save->rs_u.pos.col = (colnr_T)(reginput - regline); | |
| 6379 save->rs_u.pos.lnum = reglnum; | |
| 6380 } | |
| 6381 else | |
| 6382 save->rs_u.ptr = reginput; | |
| 233 | 6383 save->rs_len = gap->ga_len; |
| 7 | 6384 } |
| 6385 | |
| 6386 /* | |
| 6387 * Restore the input line and position from a regsave_T. | |
| 6388 */ | |
| 6389 static void | |
| 233 | 6390 reg_restore(save, gap) |
| 7 | 6391 regsave_T *save; |
| 233 | 6392 garray_T *gap; |
| 7 | 6393 { |
| 6394 if (REG_MULTI) | |
| 6395 { | |
| 6396 if (reglnum != save->rs_u.pos.lnum) | |
| 6397 { | |
| 6398 /* only call reg_getline() when the line number changed to save | |
| 6399 * a bit of time */ | |
| 6400 reglnum = save->rs_u.pos.lnum; | |
| 6401 regline = reg_getline(reglnum); | |
| 6402 } | |
| 6403 reginput = regline + save->rs_u.pos.col; | |
| 6404 } | |
| 6405 else | |
| 6406 reginput = save->rs_u.ptr; | |
| 233 | 6407 gap->ga_len = save->rs_len; |
| 7 | 6408 } |
| 6409 | |
| 6410 /* | |
| 6411 * Return TRUE if current position is equal to saved position. | |
| 6412 */ | |
| 6413 static int | |
| 6414 reg_save_equal(save) | |
| 6415 regsave_T *save; | |
| 6416 { | |
| 6417 if (REG_MULTI) | |
| 6418 return reglnum == save->rs_u.pos.lnum | |
| 6419 && reginput == regline + save->rs_u.pos.col; | |
| 6420 return reginput == save->rs_u.ptr; | |
| 6421 } | |
| 6422 | |
| 6423 /* | |
| 6424 * Tentatively set the sub-expression start to the current position (after | |
| 6425 * calling regmatch() they will have changed). Need to save the existing | |
| 6426 * values for when there is no match. | |
| 6427 * Use se_save() to use pointer (save_se_multi()) or position (save_se_one()), | |
| 6428 * depending on REG_MULTI. | |
| 6429 */ | |
| 6430 static void | |
| 6431 save_se_multi(savep, posp) | |
| 6432 save_se_T *savep; | |
| 6433 lpos_T *posp; | |
| 6434 { | |
| 6435 savep->se_u.pos = *posp; | |
| 6436 posp->lnum = reglnum; | |
| 6437 posp->col = (colnr_T)(reginput - regline); | |
| 6438 } | |
| 6439 | |
| 6440 static void | |
| 6441 save_se_one(savep, pp) | |
| 6442 save_se_T *savep; | |
| 6443 char_u **pp; | |
| 6444 { | |
| 6445 savep->se_u.ptr = *pp; | |
| 6446 *pp = reginput; | |
| 6447 } | |
| 6448 | |
| 6449 /* | |
| 6450 * Compare a number with the operand of RE_LNUM, RE_COL or RE_VCOL. | |
| 6451 */ | |
| 6452 static int | |
| 6453 re_num_cmp(val, scan) | |
| 6454 long_u val; | |
| 6455 char_u *scan; | |
| 6456 { | |
| 6457 long_u n = OPERAND_MIN(scan); | |
| 6458 | |
| 6459 if (OPERAND_CMP(scan) == '>') | |
| 6460 return val > n; | |
| 6461 if (OPERAND_CMP(scan) == '<') | |
| 6462 return val < n; | |
| 6463 return val == n; | |
| 6464 } | |
| 6465 | |
|
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6466 /* |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6467 * Check whether a backreference matches. |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6468 * Returns RA_FAIL, RA_NOMATCH or RA_MATCH. |
| 5504 | 6469 * If "bytelen" is not NULL, it is set to the byte length of the match in the |
| 6470 * last line. | |
|
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6471 */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6472 static int |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6473 match_with_backref(start_lnum, start_col, end_lnum, end_col, bytelen) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6474 linenr_T start_lnum; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6475 colnr_T start_col; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6476 linenr_T end_lnum; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6477 colnr_T end_col; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6478 int *bytelen; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6479 { |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6480 linenr_T clnum = start_lnum; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6481 colnr_T ccol = start_col; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6482 int len; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6483 char_u *p; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6484 |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6485 if (bytelen != NULL) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6486 *bytelen = 0; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6487 for (;;) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6488 { |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6489 /* Since getting one line may invalidate the other, need to make copy. |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6490 * Slow! */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6491 if (regline != reg_tofree) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6492 { |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6493 len = (int)STRLEN(regline); |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6494 if (reg_tofree == NULL || len >= (int)reg_tofreelen) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6495 { |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6496 len += 50; /* get some extra */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6497 vim_free(reg_tofree); |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6498 reg_tofree = alloc(len); |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6499 if (reg_tofree == NULL) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6500 return RA_FAIL; /* out of memory!*/ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6501 reg_tofreelen = len; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6502 } |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6503 STRCPY(reg_tofree, regline); |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6504 reginput = reg_tofree + (reginput - regline); |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6505 regline = reg_tofree; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6506 } |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6507 |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6508 /* Get the line to compare with. */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6509 p = reg_getline(clnum); |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6510 if (clnum == end_lnum) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6511 len = end_col - ccol; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6512 else |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6513 len = (int)STRLEN(p + ccol); |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6514 |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6515 if (cstrncmp(p + ccol, reginput, &len) != 0) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6516 return RA_NOMATCH; /* doesn't match */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6517 if (bytelen != NULL) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6518 *bytelen += len; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6519 if (clnum == end_lnum) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6520 break; /* match and at end! */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6521 if (reglnum >= reg_maxline) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6522 return RA_NOMATCH; /* text too short */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6523 |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6524 /* Advance to next line. */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6525 reg_nextline(); |
| 5504 | 6526 if (bytelen != NULL) |
| 6527 *bytelen = 0; | |
|
4891
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6528 ++clnum; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6529 ccol = 0; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6530 if (got_int) |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6531 return RA_FAIL; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6532 } |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6533 |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6534 /* found a match! Note that regline may now point to a copy of the line, |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6535 * that should not matter. */ |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6536 return RA_MATCH; |
|
4c42efb4c098
updated for version 7.3.1191
Bram Moolenaar <bram@vim.org>
parents:
4805
diff
changeset
|
6537 } |
| 7 | 6538 |
| 4444 | 6539 #ifdef BT_REGEXP_DUMP |
| 7 | 6540 |
| 6541 /* | |
| 6542 * regdump - dump a regexp onto stdout in vaguely comprehensible form | |
| 6543 */ | |
| 6544 static void | |
| 6545 regdump(pattern, r) | |
| 6546 char_u *pattern; | |
| 4444 | 6547 bt_regprog_T *r; |
| 7 | 6548 { |
| 6549 char_u *s; | |
| 6550 int op = EXACTLY; /* Arbitrary non-END op. */ | |
| 6551 char_u *next; | |
| 6552 char_u *end = NULL; | |
| 4444 | 6553 FILE *f; |
| 6554 | |
| 6555 #ifdef BT_REGEXP_LOG | |
| 6556 f = fopen("bt_regexp_log.log", "a"); | |
| 6557 #else | |
| 6558 f = stdout; | |
| 6559 #endif | |
| 6560 if (f == NULL) | |
| 6561 return; | |
| 6562 fprintf(f, "-------------------------------------\n\r\nregcomp(%s):\r\n", pattern); | |
| 7 | 6563 |
| 6564 s = r->program + 1; | |
| 6565 /* | |
| 6566 * Loop until we find the END that isn't before a referred next (an END | |
| 6567 * can also appear in a NOMATCH operand). | |
| 6568 */ | |
| 6569 while (op != END || s <= end) | |
| 6570 { | |
| 6571 op = OP(s); | |
| 4444 | 6572 fprintf(f, "%2d%s", (int)(s - r->program), regprop(s)); /* Where, what. */ |
| 7 | 6573 next = regnext(s); |
| 6574 if (next == NULL) /* Next ptr. */ | |
| 4444 | 6575 fprintf(f, "(0)"); |
| 7 | 6576 else |
| 4444 | 6577 fprintf(f, "(%d)", (int)((s - r->program) + (next - s))); |
| 7 | 6578 if (end < next) |
| 6579 end = next; | |
| 6580 if (op == BRACE_LIMITS) | |
| 6581 { | |
|
4746
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6582 /* Two ints */ |
| 4444 | 6583 fprintf(f, " minval %ld, maxval %ld", OPERAND_MIN(s), OPERAND_MAX(s)); |
| 7 | 6584 s += 8; |
| 6585 } | |
|
4746
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6586 else if (op == BEHIND || op == NOBEHIND) |
|
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6587 { |
|
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6588 /* one int */ |
|
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6589 fprintf(f, " count %ld", OPERAND_MIN(s)); |
|
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6590 s += 4; |
|
d1376091d18b
updated for version 7.3.1120
Bram Moolenaar <bram@vim.org>
parents:
4744
diff
changeset
|
6591 } |
|
4770
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6592 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
|
6593 { |
|
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6594 /* one int plus comperator */ |
|
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6595 fprintf(f, " count %ld", OPERAND_MIN(s)); |
|
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6596 s += 5; |
|
b20dbf3a5370
updated for version 7.3.1132
Bram Moolenaar <bram@vim.org>
parents:
4762
diff
changeset
|
6597 } |
| 7 | 6598 s += 3; |
| 6599 if (op == ANYOF || op == ANYOF + ADD_NL | |
| 6600 || op == ANYBUT || op == ANYBUT + ADD_NL | |
| 6601 || op == EXACTLY) | |
| 6602 { | |
| 6603 /* Literal string, where present. */ | |
| 4444 | 6604 fprintf(f, "\nxxxxxxxxx\n"); |
| 7 | 6605 while (*s != NUL) |
| 4444 | 6606 fprintf(f, "%c", *s++); |
| 6607 fprintf(f, "\nxxxxxxxxx\n"); | |
| 7 | 6608 s++; |
| 6609 } | |
| 4444 | 6610 fprintf(f, "\r\n"); |
| 7 | 6611 } |
| 6612 | |
| 6613 /* Header fields of interest. */ | |
| 6614 if (r->regstart != NUL) | |
| 4444 | 6615 fprintf(f, "start `%s' 0x%x; ", r->regstart < 256 |
| 7 | 6616 ? (char *)transchar(r->regstart) |
| 6617 : "multibyte", r->regstart); | |
| 6618 if (r->reganch) | |
| 4444 | 6619 fprintf(f, "anchored; "); |
| 7 | 6620 if (r->regmust != NULL) |
| 4444 | 6621 fprintf(f, "must have \"%s\"", r->regmust); |
| 6622 fprintf(f, "\r\n"); | |
| 6623 | |
| 6624 #ifdef BT_REGEXP_LOG | |
| 6625 fclose(f); | |
| 6626 #endif | |
| 7 | 6627 } |
| 4444 | 6628 #endif /* BT_REGEXP_DUMP */ |
| 6629 | |
| 6630 #ifdef DEBUG | |
| 7 | 6631 /* |
| 6632 * regprop - printable representation of opcode | |
| 6633 */ | |
| 6634 static char_u * | |
| 6635 regprop(op) | |
| 6636 char_u *op; | |
| 6637 { | |
| 4444 | 6638 char *p; |
| 6639 static char buf[50]; | |
| 6640 | |
| 6641 STRCPY(buf, ":"); | |
| 6642 | |
| 6643 switch ((int) OP(op)) | |
| 7 | 6644 { |
| 6645 case BOL: | |
| 6646 p = "BOL"; | |
| 6647 break; | |
| 6648 case EOL: | |
| 6649 p = "EOL"; | |
| 6650 break; | |
| 6651 case RE_BOF: | |
| 6652 p = "BOF"; | |
| 6653 break; | |
| 6654 case RE_EOF: | |
| 6655 p = "EOF"; | |
| 6656 break; | |
| 6657 case CURSOR: | |
| 6658 p = "CURSOR"; | |
| 6659 break; | |
| 639 | 6660 case RE_VISUAL: |
| 6661 p = "RE_VISUAL"; | |
| 6662 break; | |
| 7 | 6663 case RE_LNUM: |
| 6664 p = "RE_LNUM"; | |
| 6665 break; | |
| 639 | 6666 case RE_MARK: |
| 6667 p = "RE_MARK"; | |
| 6668 break; | |
| 7 | 6669 case RE_COL: |
| 6670 p = "RE_COL"; | |
| 6671 break; | |
| 6672 case RE_VCOL: | |
| 6673 p = "RE_VCOL"; | |
| 6674 break; | |
| 6675 case BOW: | |
| 6676 p = "BOW"; | |
| 6677 break; | |
| 6678 case EOW: | |
| 6679 p = "EOW"; | |
| 6680 break; | |
| 6681 case ANY: | |
| 6682 p = "ANY"; | |
| 6683 break; | |
| 6684 case ANY + ADD_NL: | |
| 6685 p = "ANY+NL"; | |
| 6686 break; | |
| 6687 case ANYOF: | |
| 6688 p = "ANYOF"; | |
| 6689 break; | |
| 6690 case ANYOF + ADD_NL: | |
| 6691 p = "ANYOF+NL"; | |
| 6692 break; | |
| 6693 case ANYBUT: | |
| 6694 p = "ANYBUT"; | |
| 6695 break; | |
| 6696 case ANYBUT + ADD_NL: | |
| 6697 p = "ANYBUT+NL"; | |
| 6698 break; | |
| 6699 case IDENT: | |
| 6700 p = "IDENT"; | |
| 6701 break; | |
| 6702 case IDENT + ADD_NL: | |
| 6703 p = "IDENT+NL"; | |
| 6704 break; | |
| 6705 case SIDENT: | |
| 6706 p = "SIDENT"; | |
| 6707 break; | |
| 6708 case SIDENT + ADD_NL: | |
| 6709 p = "SIDENT+NL"; | |
| 6710 break; | |
| 6711 case KWORD: | |
| 6712 p = "KWORD"; | |
| 6713 break; | |
| 6714 case KWORD + ADD_NL: | |
| 6715 p = "KWORD+NL"; | |
| 6716 break; | |
| 6717 case SKWORD: | |
| 6718 p = "SKWORD"; | |
| 6719 break; | |
| 6720 case SKWORD + ADD_NL: | |
| 6721 p = "SKWORD+NL"; | |
| 6722 break; | |
| 6723 case FNAME: | |
| 6724 p = "FNAME"; | |
| 6725 break; | |
| 6726 case FNAME + ADD_NL: | |
| 6727 p = "FNAME+NL"; | |
| 6728 break; | |
| 6729 case SFNAME: | |
| 6730 p = "SFNAME"; | |
| 6731 break; | |
| 6732 case SFNAME + ADD_NL: | |
| 6733 p = "SFNAME+NL"; | |
| 6734 break; | |
| 6735 case PRINT: | |
| 6736 p = "PRINT"; | |
| 6737 break; | |
| 6738 case PRINT + ADD_NL: | |
| 6739 p = "PRINT+NL"; | |
| 6740 break; | |
| 6741 case SPRINT: | |
| 6742 p = "SPRINT"; | |
| 6743 break; | |
| 6744 case SPRINT + ADD_NL: | |
| 6745 p = "SPRINT+NL"; | |
| 6746 break; | |
| 6747 case WHITE: | |
| 6748 p = "WHITE"; | |
| 6749 break; | |
| 6750 case WHITE + ADD_NL: | |
| 6751 p = "WHITE+NL"; | |
| 6752 break; | |
| 6753 case NWHITE: | |
| 6754 p = "NWHITE"; | |
| 6755 break; | |
| 6756 case NWHITE + ADD_NL: | |
| 6757 p = "NWHITE+NL"; | |
| 6758 break; | |
| 6759 case DIGIT: | |
| 6760 p = "DIGIT"; | |
| 6761 break; | |
| 6762 case DIGIT + ADD_NL: | |
| 6763 p = "DIGIT+NL"; | |
| 6764 break; | |
| 6765 case NDIGIT: | |
| 6766 p = "NDIGIT"; | |
| 6767 break; | |
| 6768 case NDIGIT + ADD_NL: | |
| 6769 p = "NDIGIT+NL"; | |
| 6770 break; | |
| 6771 case HEX: | |
| 6772 p = "HEX"; | |
| 6773 break; | |
| 6774 case HEX + ADD_NL: | |
| 6775 p = "HEX+NL"; | |
| 6776 break; | |
| 6777 case NHEX: | |
| 6778 p = "NHEX"; | |
| 6779 break; | |
| 6780 case NHEX + ADD_NL: | |
| 6781 p = "NHEX+NL"; | |
| 6782 break; | |
| 6783 case OCTAL: | |
| 6784 p = "OCTAL"; | |
| 6785 break; | |
| 6786 case OCTAL + ADD_NL: | |
| 6787 p = "OCTAL+NL"; | |
| 6788 break; | |
| 6789 case NOCTAL: | |
| 6790 p = "NOCTAL"; | |
| 6791 break; | |
| 6792 case NOCTAL + ADD_NL: | |
| 6793 p = "NOCTAL+NL"; | |
| 6794 break; | |
| 6795 case WORD: | |
| 6796 p = "WORD"; | |
| 6797 break; | |
| 6798 case WORD + ADD_NL: | |
| 6799 p = "WORD+NL"; | |
| 6800 break; | |
| 6801 case NWORD: | |
| 6802 p = "NWORD"; | |
| 6803 break; | |
| 6804 case NWORD + ADD_NL: | |
| 6805 p = "NWORD+NL"; | |
| 6806 break; | |
| 6807 case HEAD: | |
| 6808 p = "HEAD"; | |
| 6809 break; | |
| 6810 case HEAD + ADD_NL: | |
| 6811 p = "HEAD+NL"; | |
| 6812 break; | |
| 6813 case NHEAD: | |
| 6814 p = "NHEAD"; | |
| 6815 break; | |
| 6816 case NHEAD + ADD_NL: | |
| 6817 p = "NHEAD+NL"; | |
| 6818 break; | |
| 6819 case ALPHA: | |
| 6820 p = "ALPHA"; | |
| 6821 break; | |
| 6822 case ALPHA + ADD_NL: | |
| 6823 p = "ALPHA+NL"; | |
| 6824 break; | |
| 6825 case NALPHA: | |
| 6826 p = "NALPHA"; | |
| 6827 break; | |
| 6828 case NALPHA + ADD_NL: | |
| 6829 p = "NALPHA+NL"; | |
| 6830 break; | |
| 6831 case LOWER: | |
| 6832 p = "LOWER"; | |
| 6833 break; | |
| 6834 case LOWER + ADD_NL: | |
| 6835 p = "LOWER+NL"; | |
| 6836 break; | |
| 6837 case NLOWER: | |
| 6838 p = "NLOWER"; | |
| 6839 break; | |
| 6840 case NLOWER + ADD_NL: | |
| 6841 p = "NLOWER+NL"; | |
| 6842 break; | |
| 6843 case UPPER: | |
| 6844 p = "UPPER"; | |
| 6845 break; | |
| 6846 case UPPER + ADD_NL: | |
| 6847 p = "UPPER+NL"; | |
| 6848 break; | |
| 6849 case NUPPER: | |
| 6850 p = "NUPPER"; | |
| 6851 break; | |
| 6852 case NUPPER + ADD_NL: | |
| 6853 p = "NUPPER+NL"; | |
| 6854 break; | |
| 6855 case BRANCH: | |
| 6856 p = "BRANCH"; | |
| 6857 break; | |
| 6858 case EXACTLY: | |
| 6859 p = "EXACTLY"; | |
| 6860 break; | |
| 6861 case NOTHING: | |
| 6862 p = "NOTHING"; | |
| 6863 break; | |
| 6864 case BACK: | |
| 6865 p = "BACK"; | |
| 6866 break; | |
| 6867 case END: | |
| 6868 p = "END"; | |
| 6869 break; | |
| 6870 case MOPEN + 0: | |
| 6871 p = "MATCH START"; | |
| 6872 break; | |
| 6873 case MOPEN + 1: | |
| 6874 case MOPEN + 2: | |
| 6875 case MOPEN + 3: | |
| 6876 case MOPEN + 4: | |
| 6877 case MOPEN + 5: | |
| 6878 case MOPEN + 6: | |
| 6879 case MOPEN + 7: | |
| 6880 case MOPEN + 8: | |
| 6881 case MOPEN + 9: | |
| 6882 sprintf(buf + STRLEN(buf), "MOPEN%d", OP(op) - MOPEN); | |
| 6883 p = NULL; | |
| 6884 break; | |
| 6885 case MCLOSE + 0: | |
| 6886 p = "MATCH END"; | |
| 6887 break; | |
| 6888 case MCLOSE + 1: | |
| 6889 case MCLOSE + 2: | |
| 6890 case MCLOSE + 3: | |
| 6891 case MCLOSE + 4: | |
| 6892 case MCLOSE + 5: | |
| 6893 case MCLOSE + 6: | |
| 6894 case MCLOSE + 7: | |
| 6895 case MCLOSE + 8: | |
| 6896 case MCLOSE + 9: | |
| 6897 sprintf(buf + STRLEN(buf), "MCLOSE%d", OP(op) - MCLOSE); | |
| 6898 p = NULL; | |
| 6899 break; | |
| 6900 case BACKREF + 1: | |
| 6901 case BACKREF + 2: | |
| 6902 case BACKREF + 3: | |
| 6903 case BACKREF + 4: | |
| 6904 case BACKREF + 5: | |
| 6905 case BACKREF + 6: | |
| 6906 case BACKREF + 7: | |
| 6907 case BACKREF + 8: | |
| 6908 case BACKREF + 9: | |
| 6909 sprintf(buf + STRLEN(buf), "BACKREF%d", OP(op) - BACKREF); | |
| 6910 p = NULL; | |
| 6911 break; | |
| 6912 case NOPEN: | |
| 6913 p = "NOPEN"; | |
| 6914 break; | |
| 6915 case NCLOSE: | |
| 6916 p = "NCLOSE"; | |
| 6917 break; | |
| 6918 #ifdef FEAT_SYN_HL | |
| 6919 case ZOPEN + 1: | |
| 6920 case ZOPEN + 2: | |
| 6921 case ZOPEN + 3: | |
| 6922 case ZOPEN + 4: | |
| 6923 case ZOPEN + 5: | |
| 6924 case ZOPEN + 6: | |
| 6925 case ZOPEN + 7: | |
| 6926 case ZOPEN + 8: | |
| 6927 case ZOPEN + 9: | |
| 6928 sprintf(buf + STRLEN(buf), "ZOPEN%d", OP(op) - ZOPEN); | |
| 6929 p = NULL; | |
| 6930 break; | |
| 6931 case ZCLOSE + 1: | |
| 6932 case ZCLOSE + 2: | |
| 6933 case ZCLOSE + 3: | |
| 6934 case ZCLOSE + 4: | |
| 6935 case ZCLOSE + 5: | |
| 6936 case ZCLOSE + 6: | |
| 6937 case ZCLOSE + 7: | |
| 6938 case ZCLOSE + 8: | |
| 6939 case ZCLOSE + 9: | |
| 6940 sprintf(buf + STRLEN(buf), "ZCLOSE%d", OP(op) - ZCLOSE); | |
| 6941 p = NULL; | |
| 6942 break; | |
| 6943 case ZREF + 1: | |
| 6944 case ZREF + 2: | |
| 6945 case ZREF + 3: | |
| 6946 case ZREF + 4: | |
| 6947 case ZREF + 5: | |
| 6948 case ZREF + 6: | |
| 6949 case ZREF + 7: | |
| 6950 case ZREF + 8: | |
| 6951 case ZREF + 9: | |
| 6952 sprintf(buf + STRLEN(buf), "ZREF%d", OP(op) - ZREF); | |
| 6953 p = NULL; | |
| 6954 break; | |
| 6955 #endif | |
| 6956 case STAR: | |
| 6957 p = "STAR"; | |
| 6958 break; | |
| 6959 case PLUS: | |
| 6960 p = "PLUS"; | |
| 6961 break; | |
| 6962 case NOMATCH: | |
| 6963 p = "NOMATCH"; | |
| 6964 break; | |
| 6965 case MATCH: | |
| 6966 p = "MATCH"; | |
| 6967 break; | |
| 6968 case BEHIND: | |
| 6969 p = "BEHIND"; | |
| 6970 break; | |
| 6971 case NOBEHIND: | |
| 6972 p = "NOBEHIND"; | |
| 6973 break; | |
| 6974 case SUBPAT: | |
| 6975 p = "SUBPAT"; | |
| 6976 break; | |
| 6977 case BRACE_LIMITS: | |
| 6978 p = "BRACE_LIMITS"; | |
| 6979 break; | |
| 6980 case BRACE_SIMPLE: | |
| 6981 p = "BRACE_SIMPLE"; | |
| 6982 break; | |
| 6983 case BRACE_COMPLEX + 0: | |
| 6984 case BRACE_COMPLEX + 1: | |
| 6985 case BRACE_COMPLEX + 2: | |
| 6986 case BRACE_COMPLEX + 3: | |
| 6987 case BRACE_COMPLEX + 4: | |
| 6988 case BRACE_COMPLEX + 5: | |
| 6989 case BRACE_COMPLEX + 6: | |
| 6990 case BRACE_COMPLEX + 7: | |
| 6991 case BRACE_COMPLEX + 8: | |
| 6992 case BRACE_COMPLEX + 9: | |
| 6993 sprintf(buf + STRLEN(buf), "BRACE_COMPLEX%d", OP(op) - BRACE_COMPLEX); | |
| 6994 p = NULL; | |
| 6995 break; | |
| 6996 #ifdef FEAT_MBYTE | |
| 6997 case MULTIBYTECODE: | |
| 6998 p = "MULTIBYTECODE"; | |
| 6999 break; | |
| 7000 #endif | |
| 7001 case NEWL: | |
| 7002 p = "NEWL"; | |
| 7003 break; | |
| 7004 default: | |
| 7005 sprintf(buf + STRLEN(buf), "corrupt %d", OP(op)); | |
| 7006 p = NULL; | |
| 7007 break; | |
| 7008 } | |
| 7009 if (p != NULL) | |
| 4444 | 7010 STRCAT(buf, p); |
| 7011 return (char_u *)buf; | |
| 7 | 7012 } |
| 4444 | 7013 #endif /* DEBUG */ |
| 7 | 7014 |
| 6203 | 7015 /* |
| 7016 * Used in a place where no * or \+ can follow. | |
| 7017 */ | |
| 7018 static int | |
| 7019 re_mult_next(what) | |
| 7020 char *what; | |
| 7021 { | |
| 7022 if (re_multi_type(peekchr()) == MULTI_MULT) | |
| 7023 EMSG2_RET_FAIL(_("E888: (NFA regexp) cannot repeat %s"), what); | |
| 7024 return OK; | |
| 7025 } | |
| 7026 | |
| 7 | 7027 #ifdef FEAT_MBYTE |
| 7028 static void mb_decompose __ARGS((int c, int *c1, int *c2, int *c3)); | |
| 7029 | |
| 7030 typedef struct | |
| 7031 { | |
| 7032 int a, b, c; | |
| 7033 } decomp_T; | |
| 7034 | |
| 7035 | |
| 7036 /* 0xfb20 - 0xfb4f */ | |
| 297 | 7037 static decomp_T decomp_table[0xfb4f-0xfb20+1] = |
| 7 | 7038 { |
| 7039 {0x5e2,0,0}, /* 0xfb20 alt ayin */ | |
| 7040 {0x5d0,0,0}, /* 0xfb21 alt alef */ | |
| 7041 {0x5d3,0,0}, /* 0xfb22 alt dalet */ | |
| 7042 {0x5d4,0,0}, /* 0xfb23 alt he */ | |
| 7043 {0x5db,0,0}, /* 0xfb24 alt kaf */ | |
| 7044 {0x5dc,0,0}, /* 0xfb25 alt lamed */ | |
| 7045 {0x5dd,0,0}, /* 0xfb26 alt mem-sofit */ | |
| 7046 {0x5e8,0,0}, /* 0xfb27 alt resh */ | |
| 7047 {0x5ea,0,0}, /* 0xfb28 alt tav */ | |
| 7048 {'+', 0, 0}, /* 0xfb29 alt plus */ | |
| 7049 {0x5e9, 0x5c1, 0}, /* 0xfb2a shin+shin-dot */ | |
| 7050 {0x5e9, 0x5c2, 0}, /* 0xfb2b shin+sin-dot */ | |
| 7051 {0x5e9, 0x5c1, 0x5bc}, /* 0xfb2c shin+shin-dot+dagesh */ | |
| 7052 {0x5e9, 0x5c2, 0x5bc}, /* 0xfb2d shin+sin-dot+dagesh */ | |
| 7053 {0x5d0, 0x5b7, 0}, /* 0xfb2e alef+patah */ | |
| 7054 {0x5d0, 0x5b8, 0}, /* 0xfb2f alef+qamats */ | |
| 7055 {0x5d0, 0x5b4, 0}, /* 0xfb30 alef+hiriq */ | |
| 7056 {0x5d1, 0x5bc, 0}, /* 0xfb31 bet+dagesh */ | |
| 7057 {0x5d2, 0x5bc, 0}, /* 0xfb32 gimel+dagesh */ | |
| 7058 {0x5d3, 0x5bc, 0}, /* 0xfb33 dalet+dagesh */ | |
| 7059 {0x5d4, 0x5bc, 0}, /* 0xfb34 he+dagesh */ | |
| 7060 {0x5d5, 0x5bc, 0}, /* 0xfb35 vav+dagesh */ | |
| 7061 {0x5d6, 0x5bc, 0}, /* 0xfb36 zayin+dagesh */ | |
| 7062 {0xfb37, 0, 0}, /* 0xfb37 -- UNUSED */ | |
| 7063 {0x5d8, 0x5bc, 0}, /* 0xfb38 tet+dagesh */ | |
| 7064 {0x5d9, 0x5bc, 0}, /* 0xfb39 yud+dagesh */ | |
| 7065 {0x5da, 0x5bc, 0}, /* 0xfb3a kaf sofit+dagesh */ | |
| 7066 {0x5db, 0x5bc, 0}, /* 0xfb3b kaf+dagesh */ | |
| 7067 {0x5dc, 0x5bc, 0}, /* 0xfb3c lamed+dagesh */ | |
| 7068 {0xfb3d, 0, 0}, /* 0xfb3d -- UNUSED */ | |
| 7069 {0x5de, 0x5bc, 0}, /* 0xfb3e mem+dagesh */ | |
| 7070 {0xfb3f, 0, 0}, /* 0xfb3f -- UNUSED */ | |
| 7071 {0x5e0, 0x5bc, 0}, /* 0xfb40 nun+dagesh */ | |
| 7072 {0x5e1, 0x5bc, 0}, /* 0xfb41 samech+dagesh */ | |
| 7073 {0xfb42, 0, 0}, /* 0xfb42 -- UNUSED */ | |
| 7074 {0x5e3, 0x5bc, 0}, /* 0xfb43 pe sofit+dagesh */ | |
| 7075 {0x5e4, 0x5bc,0}, /* 0xfb44 pe+dagesh */ | |
| 7076 {0xfb45, 0, 0}, /* 0xfb45 -- UNUSED */ | |
| 7077 {0x5e6, 0x5bc, 0}, /* 0xfb46 tsadi+dagesh */ | |
| 7078 {0x5e7, 0x5bc, 0}, /* 0xfb47 qof+dagesh */ | |
| 7079 {0x5e8, 0x5bc, 0}, /* 0xfb48 resh+dagesh */ | |
| 7080 {0x5e9, 0x5bc, 0}, /* 0xfb49 shin+dagesh */ | |
| 7081 {0x5ea, 0x5bc, 0}, /* 0xfb4a tav+dagesh */ | |
| 7082 {0x5d5, 0x5b9, 0}, /* 0xfb4b vav+holam */ | |
| 7083 {0x5d1, 0x5bf, 0}, /* 0xfb4c bet+rafe */ | |
| 7084 {0x5db, 0x5bf, 0}, /* 0xfb4d kaf+rafe */ | |
| 7085 {0x5e4, 0x5bf, 0}, /* 0xfb4e pe+rafe */ | |
| 7086 {0x5d0, 0x5dc, 0} /* 0xfb4f alef-lamed */ | |
| 7087 }; | |
| 7088 | |
| 7089 static void | |
| 7090 mb_decompose(c, c1, c2, c3) | |
| 7091 int c, *c1, *c2, *c3; | |
| 7092 { | |
| 7093 decomp_T d; | |
| 7094 | |
|
4505
d037b9cbdaaa
updated for version 7.3.1000
Bram Moolenaar <bram@vim.org>
parents:
4466
diff
changeset
|
7095 if (c >= 0xfb20 && c <= 0xfb4f) |
| 7 | 7096 { |
| 7097 d = decomp_table[c - 0xfb20]; | |
| 7098 *c1 = d.a; | |
| 7099 *c2 = d.b; | |
| 7100 *c3 = d.c; | |
| 7101 } | |
| 7102 else | |
| 7103 { | |
| 7104 *c1 = c; | |
| 7105 *c2 = *c3 = 0; | |
| 7106 } | |
| 7107 } | |
| 7108 #endif | |
| 7109 | |
| 7110 /* | |
| 7111 * Compare two strings, ignore case if ireg_ic set. | |
| 7112 * Return 0 if strings match, non-zero otherwise. | |
| 7113 * Correct the length "*n" when composing characters are ignored. | |
| 7114 */ | |
| 7115 static int | |
| 7116 cstrncmp(s1, s2, n) | |
| 7117 char_u *s1, *s2; | |
| 7118 int *n; | |
| 7119 { | |
| 7120 int result; | |
| 7121 | |
| 7122 if (!ireg_ic) | |
| 7123 result = STRNCMP(s1, s2, *n); | |
| 7124 else | |
| 7125 result = MB_STRNICMP(s1, s2, *n); | |
| 7126 | |
| 7127 #ifdef FEAT_MBYTE | |
| 7128 /* if it failed and it's utf8 and we want to combineignore: */ | |
| 7129 if (result != 0 && enc_utf8 && ireg_icombine) | |
| 7130 { | |
| 7131 char_u *str1, *str2; | |
| 7132 int c1, c2, c11, c12; | |
| 7133 int junk; | |
| 7134 | |
| 7135 /* we have to handle the strcmp ourselves, since it is necessary to | |
| 7136 * deal with the composing characters by ignoring them: */ | |
| 7137 str1 = s1; | |
| 7138 str2 = s2; | |
| 7139 c1 = c2 = 0; | |
| 507 | 7140 while ((int)(str1 - s1) < *n) |
| 7 | 7141 { |
| 7142 c1 = mb_ptr2char_adv(&str1); | |
| 7143 c2 = mb_ptr2char_adv(&str2); | |
| 7144 | |
| 7145 /* decompose the character if necessary, into 'base' characters | |
| 7146 * because I don't care about Arabic, I will hard-code the Hebrew | |
| 7147 * which I *do* care about! So sue me... */ | |
| 7148 if (c1 != c2 && (!ireg_ic || utf_fold(c1) != utf_fold(c2))) | |
| 7149 { | |
| 7150 /* decomposition necessary? */ | |
| 7151 mb_decompose(c1, &c11, &junk, &junk); | |
| 7152 mb_decompose(c2, &c12, &junk, &junk); | |
| 7153 c1 = c11; | |
| 7154 c2 = c12; | |
| 7155 if (c11 != c12 && (!ireg_ic || utf_fold(c11) != utf_fold(c12))) | |
| 7156 break; | |
| 7157 } | |
| 7158 } | |
| 7159 result = c2 - c1; | |
| 7160 if (result == 0) | |
| 7161 *n = (int)(str2 - s2); | |
| 7162 } | |
| 7163 #endif | |
| 7164 | |
| 7165 return result; | |
| 7166 } | |
| 7167 | |
| 7168 /* | |
| 7169 * cstrchr: This function is used a lot for simple searches, keep it fast! | |
| 7170 */ | |
| 7171 static char_u * | |
| 7172 cstrchr(s, c) | |
| 7173 char_u *s; | |
| 7174 int c; | |
| 7175 { | |
| 7176 char_u *p; | |
| 7177 int cc; | |
| 7178 | |
| 7179 if (!ireg_ic | |
| 7180 #ifdef FEAT_MBYTE | |
| 7181 || (!enc_utf8 && mb_char2len(c) > 1) | |
| 7182 #endif | |
| 7183 ) | |
| 7184 return vim_strchr(s, c); | |
| 7185 | |
| 7186 /* tolower() and toupper() can be slow, comparing twice should be a lot | |
| 7187 * faster (esp. when using MS Visual C++!). | |
| 7188 * For UTF-8 need to use folded case. */ | |
| 7189 #ifdef FEAT_MBYTE | |
| 7190 if (enc_utf8 && c > 0x80) | |
| 7191 cc = utf_fold(c); | |
| 7192 else | |
| 7193 #endif | |
| 1347 | 7194 if (MB_ISUPPER(c)) |
| 7195 cc = MB_TOLOWER(c); | |
| 7196 else if (MB_ISLOWER(c)) | |
| 7197 cc = MB_TOUPPER(c); | |
| 7 | 7198 else |
| 7199 return vim_strchr(s, c); | |
| 7200 | |
| 7201 #ifdef FEAT_MBYTE | |
| 7202 if (has_mbyte) | |
| 7203 { | |
| 474 | 7204 for (p = s; *p != NUL; p += (*mb_ptr2len)(p)) |
| 7 | 7205 { |
| 7206 if (enc_utf8 && c > 0x80) | |
| 7207 { | |
| 7208 if (utf_fold(utf_ptr2char(p)) == cc) | |
| 7209 return p; | |
| 7210 } | |
| 7211 else if (*p == c || *p == cc) | |
| 7212 return p; | |
| 7213 } | |
| 7214 } | |
| 7215 else | |
| 7216 #endif | |
| 7217 /* Faster version for when there are no multi-byte characters. */ | |
| 7218 for (p = s; *p != NUL; ++p) | |
| 7219 if (*p == c || *p == cc) | |
| 7220 return p; | |
| 7221 | |
| 7222 return NULL; | |
| 7223 } | |
| 7224 | |
| 7225 /*************************************************************** | |
| 7226 * regsub stuff * | |
| 7227 ***************************************************************/ | |
| 7228 | |
| 7229 /* This stuff below really confuses cc on an SGI -- webb */ | |
| 7230 #ifdef __sgi | |
| 7231 # undef __ARGS | |
| 7232 # define __ARGS(x) () | |
| 7233 #endif | |
| 7234 | |
| 7235 /* | |
| 7236 * We should define ftpr as a pointer to a function returning a pointer to | |
| 7237 * a function returning a pointer to a function ... | |
| 7238 * This is impossible, so we declare a pointer to a function returning a | |
| 7239 * pointer to a function returning void. This should work for all compilers. | |
| 7240 */ | |
| 772 | 7241 typedef void (*(*fptr_T) __ARGS((int *, int)))(); |
| 7242 | |
| 7243 static fptr_T do_upper __ARGS((int *, int)); | |
| 7244 static fptr_T do_Upper __ARGS((int *, int)); | |
| 7245 static fptr_T do_lower __ARGS((int *, int)); | |
| 7246 static fptr_T do_Lower __ARGS((int *, int)); | |
| 7 | 7247 |
| 7248 static int vim_regsub_both __ARGS((char_u *source, char_u *dest, int copy, int magic, int backslash)); | |
| 7249 | |
| 772 | 7250 static fptr_T |
| 7 | 7251 do_upper(d, c) |
| 772 | 7252 int *d; |
| 7253 int c; | |
| 7 | 7254 { |
| 772 | 7255 *d = MB_TOUPPER(c); |
| 7256 | |
| 7257 return (fptr_T)NULL; | |
| 7 | 7258 } |
| 7259 | |
| 772 | 7260 static fptr_T |
| 7261 do_Upper(d, c) | |
| 7262 int *d; | |
| 7 | 7263 int c; |
| 7264 { | |
| 772 | 7265 *d = MB_TOUPPER(c); |
| 7266 | |
| 7267 return (fptr_T)do_Upper; | |
| 7268 } | |
| 7269 | |
| 7270 static fptr_T | |
| 7271 do_lower(d, c) | |
| 7272 int *d; | |
| 7273 int c; | |
| 7274 { | |
| 7275 *d = MB_TOLOWER(c); | |
| 7276 | |
| 7277 return (fptr_T)NULL; | |
| 7278 } | |
| 7279 | |
| 7280 static fptr_T | |
| 7281 do_Lower(d, c) | |
| 7282 int *d; | |
| 7283 int c; | |
| 7284 { | |
| 7285 *d = MB_TOLOWER(c); | |
| 7286 | |
| 7287 return (fptr_T)do_Lower; | |
| 7 | 7288 } |
| 7289 | |
| 7290 /* | |
| 7291 * regtilde(): Replace tildes in the pattern by the old pattern. | |
| 7292 * | |
| 7293 * Short explanation of the tilde: It stands for the previous replacement | |
| 7294 * pattern. If that previous pattern also contains a ~ we should go back a | |
| 7295 * step further... But we insert the previous pattern into the current one | |
| 7296 * and remember that. | |
| 772 | 7297 * This still does not handle the case where "magic" changes. So require the |
| 7298 * user to keep his hands off of "magic". | |
| 7 | 7299 * |
| 7300 * The tildes are parsed once before the first call to vim_regsub(). | |
| 7301 */ | |
| 7302 char_u * | |
| 7303 regtilde(source, magic) | |
| 7304 char_u *source; | |
| 7305 int magic; | |
| 7306 { | |
| 7307 char_u *newsub = source; | |
| 7308 char_u *tmpsub; | |
| 7309 char_u *p; | |
| 7310 int len; | |
| 7311 int prevlen; | |
| 7312 | |
| 7313 for (p = newsub; *p; ++p) | |
| 7314 { | |
| 7315 if ((*p == '~' && magic) || (*p == '\\' && *(p + 1) == '~' && !magic)) | |
| 7316 { | |
| 7317 if (reg_prev_sub != NULL) | |
| 7318 { | |
| 7319 /* length = len(newsub) - 1 + len(prev_sub) + 1 */ | |
| 7320 prevlen = (int)STRLEN(reg_prev_sub); | |
| 7321 tmpsub = alloc((unsigned)(STRLEN(newsub) + prevlen)); | |
| 7322 if (tmpsub != NULL) | |
| 7323 { | |
| 7324 /* copy prefix */ | |
| 7325 len = (int)(p - newsub); /* not including ~ */ | |
| 7326 mch_memmove(tmpsub, newsub, (size_t)len); | |
| 1209 | 7327 /* interpret tilde */ |
| 7 | 7328 mch_memmove(tmpsub + len, reg_prev_sub, (size_t)prevlen); |
| 7329 /* copy postfix */ | |
| 7330 if (!magic) | |
| 7331 ++p; /* back off \ */ | |
| 7332 STRCPY(tmpsub + len + prevlen, p + 1); | |
| 7333 | |
| 7334 if (newsub != source) /* already allocated newsub */ | |
| 7335 vim_free(newsub); | |
| 7336 newsub = tmpsub; | |
| 7337 p = newsub + len + prevlen; | |
| 7338 } | |
| 7339 } | |
| 7340 else if (magic) | |
| 1621 | 7341 STRMOVE(p, p + 1); /* remove '~' */ |
| 7 | 7342 else |
| 1621 | 7343 STRMOVE(p, p + 2); /* remove '\~' */ |
| 7 | 7344 --p; |
| 7345 } | |
| 7346 else | |
| 7347 { | |
| 7348 if (*p == '\\' && p[1]) /* skip escaped characters */ | |
| 7349 ++p; | |
| 7350 #ifdef FEAT_MBYTE | |
| 7351 if (has_mbyte) | |
| 474 | 7352 p += (*mb_ptr2len)(p) - 1; |
| 7 | 7353 #endif |
| 7354 } | |
| 7355 } | |
| 7356 | |
| 7357 vim_free(reg_prev_sub); | |
| 7358 if (newsub != source) /* newsub was allocated, just keep it */ | |
| 7359 reg_prev_sub = newsub; | |
| 7360 else /* no ~ found, need to save newsub */ | |
| 7361 reg_prev_sub = vim_strsave(newsub); | |
| 7362 return newsub; | |
| 7363 } | |
| 7364 | |
| 7365 #ifdef FEAT_EVAL | |
| 7366 static int can_f_submatch = FALSE; /* TRUE when submatch() can be used */ | |
| 7367 | |
| 7368 /* These pointers are used instead of reg_match and reg_mmatch for | |
| 7369 * reg_submatch(). Needed for when the substitution string is an expression | |
| 7370 * that contains a call to substitute() and submatch(). */ | |
| 7371 static regmatch_T *submatch_match; | |
| 7372 static regmmatch_T *submatch_mmatch; | |
| 2011 | 7373 static linenr_T submatch_firstlnum; |
| 7374 static linenr_T submatch_maxline; | |
| 2904 | 7375 static int submatch_line_lbr; |
| 7 | 7376 #endif |
| 7377 | |
| 7378 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) || defined(PROTO) | |
| 7379 /* | |
| 7380 * vim_regsub() - perform substitutions after a vim_regexec() or | |
| 7381 * vim_regexec_multi() match. | |
| 7382 * | |
| 7383 * If "copy" is TRUE really copy into "dest". | |
| 7384 * If "copy" is FALSE nothing is copied, this is just to find out the length | |
| 7385 * of the result. | |
| 7386 * | |
| 7387 * If "backslash" is TRUE, a backslash will be removed later, need to double | |
| 7388 * them to keep them, and insert a backslash before a CR to avoid it being | |
| 7389 * replaced with a line break later. | |
| 7390 * | |
| 7391 * Note: The matched text must not change between the call of | |
| 7392 * vim_regexec()/vim_regexec_multi() and vim_regsub()! It would make the back | |
| 7393 * references invalid! | |
| 7394 * | |
| 7395 * Returns the size of the replacement, including terminating NUL. | |
| 7396 */ | |
| 7397 int | |
| 7398 vim_regsub(rmp, source, dest, copy, magic, backslash) | |
| 7399 regmatch_T *rmp; | |
| 7400 char_u *source; | |
| 7401 char_u *dest; | |
| 7402 int copy; | |
| 7403 int magic; | |
| 7404 int backslash; | |
| 7405 { | |
| 7406 reg_match = rmp; | |
| 7407 reg_mmatch = NULL; | |
| 7408 reg_maxline = 0; | |
| 4061 | 7409 reg_buf = curbuf; |
| 5836 | 7410 reg_line_lbr = TRUE; |
| 7 | 7411 return vim_regsub_both(source, dest, copy, magic, backslash); |
| 7412 } | |
| 7413 #endif | |
| 7414 | |
| 7415 int | |
| 7416 vim_regsub_multi(rmp, lnum, source, dest, copy, magic, backslash) | |
| 7417 regmmatch_T *rmp; | |
| 7418 linenr_T lnum; | |
| 7419 char_u *source; | |
| 7420 char_u *dest; | |
| 7421 int copy; | |
| 7422 int magic; | |
| 7423 int backslash; | |
| 7424 { | |
| 7425 reg_match = NULL; | |
| 7426 reg_mmatch = rmp; | |
| 7427 reg_buf = curbuf; /* always works on the current buffer! */ | |
| 7428 reg_firstlnum = lnum; | |
| 7429 reg_maxline = curbuf->b_ml.ml_line_count - lnum; | |
| 5836 | 7430 reg_line_lbr = FALSE; |
| 7 | 7431 return vim_regsub_both(source, dest, copy, magic, backslash); |
| 7432 } | |
| 7433 | |
| 7434 static int | |
| 7435 vim_regsub_both(source, dest, copy, magic, backslash) | |
| 7436 char_u *source; | |
| 7437 char_u *dest; | |
| 7438 int copy; | |
| 7439 int magic; | |
| 7440 int backslash; | |
| 7441 { | |
| 7442 char_u *src; | |
| 7443 char_u *dst; | |
| 7444 char_u *s; | |
| 7445 int c; | |
| 772 | 7446 int cc; |
| 7 | 7447 int no = -1; |
| 4244 | 7448 fptr_T func_all = (fptr_T)NULL; |
| 7449 fptr_T func_one = (fptr_T)NULL; | |
| 7 | 7450 linenr_T clnum = 0; /* init for GCC */ |
| 7451 int len = 0; /* init for GCC */ | |
| 7452 #ifdef FEAT_EVAL | |
| 7453 static char_u *eval_result = NULL; | |
| 7454 #endif | |
| 7455 | |
| 7456 /* Be paranoid... */ | |
| 7457 if (source == NULL || dest == NULL) | |
| 7458 { | |
| 7459 EMSG(_(e_null)); | |
| 7460 return 0; | |
| 7461 } | |
| 7462 if (prog_magic_wrong()) | |
| 7463 return 0; | |
| 7464 src = source; | |
| 7465 dst = dest; | |
| 7466 | |
| 7467 /* | |
| 7468 * When the substitute part starts with "\=" evaluate it as an expression. | |
| 7469 */ | |
| 7470 if (source[0] == '\\' && source[1] == '=' | |
| 7471 #ifdef FEAT_EVAL | |
| 7472 && !can_f_submatch /* can't do this recursively */ | |
| 7473 #endif | |
| 7474 ) | |
| 7475 { | |
| 7476 #ifdef FEAT_EVAL | |
| 7477 /* To make sure that the length doesn't change between checking the | |
| 7478 * length and copying the string, and to speed up things, the | |
| 7479 * resulting string is saved from the call with "copy" == FALSE to the | |
| 7480 * call with "copy" == TRUE. */ | |
| 7481 if (copy) | |
| 7482 { | |
| 7483 if (eval_result != NULL) | |
| 7484 { | |
| 7485 STRCPY(dest, eval_result); | |
| 7486 dst += STRLEN(eval_result); | |
| 7487 vim_free(eval_result); | |
| 7488 eval_result = NULL; | |
| 7489 } | |
| 7490 } | |
| 7491 else | |
| 7492 { | |
| 7493 win_T *save_reg_win; | |
| 7494 int save_ireg_ic; | |
| 7495 | |
| 7496 vim_free(eval_result); | |
| 7497 | |
| 7498 /* The expression may contain substitute(), which calls us | |
| 7499 * recursively. Make sure submatch() gets the text from the first | |
| 7500 * level. Don't need to save "reg_buf", because | |
| 7501 * vim_regexec_multi() can't be called recursively. */ | |
| 7502 submatch_match = reg_match; | |
| 7503 submatch_mmatch = reg_mmatch; | |
| 2011 | 7504 submatch_firstlnum = reg_firstlnum; |
| 7505 submatch_maxline = reg_maxline; | |
| 2904 | 7506 submatch_line_lbr = reg_line_lbr; |
| 7 | 7507 save_reg_win = reg_win; |
| 7508 save_ireg_ic = ireg_ic; | |
| 7509 can_f_submatch = TRUE; | |
| 7510 | |
| 714 | 7511 eval_result = eval_to_string(source + 2, NULL, TRUE); |
| 7 | 7512 if (eval_result != NULL) |
| 7513 { | |
|
2125
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parents:
2012
diff
changeset
|
7514 int had_backslash = FALSE; |
|
b8744d1982d1
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parents:
2012
diff
changeset
|
7515 |
| 39 | 7516 for (s = eval_result; *s != NUL; mb_ptr_adv(s)) |
| 7 | 7517 { |
| 2904 | 7518 /* Change NL to CR, so that it becomes a line break, |
| 7519 * unless called from vim_regexec_nl(). | |
| 7 | 7520 * Skip over a backslashed character. */ |
| 2904 | 7521 if (*s == NL && !submatch_line_lbr) |
| 7 | 7522 *s = CAR; |
| 7523 else if (*s == '\\' && s[1] != NUL) | |
|
2125
b8744d1982d1
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Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7524 { |
| 7 | 7525 ++s; |
| 2173 | 7526 /* Change NL to CR here too, so that this works: |
| 7527 * :s/abc\\\ndef/\="aaa\\\nbbb"/ on text: | |
| 7528 * abc\ | |
| 7529 * def | |
| 2904 | 7530 * Not when called from vim_regexec_nl(). |
| 2173 | 7531 */ |
| 2904 | 7532 if (*s == NL && !submatch_line_lbr) |
| 2173 | 7533 *s = CAR; |
|
2125
b8744d1982d1
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Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7534 had_backslash = TRUE; |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7535 } |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7536 } |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7537 if (had_backslash && backslash) |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7538 { |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7539 /* Backslashes will be consumed, need to double them. */ |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7540 s = vim_strsave_escaped(eval_result, (char_u *)"\\"); |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7541 if (s != NULL) |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7542 { |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7543 vim_free(eval_result); |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7544 eval_result = s; |
|
b8744d1982d1
updated for version 7.2.407
Bram Moolenaar <bram@zimbu.org>
parents:
2012
diff
changeset
|
7545 } |
| 7 | 7546 } |
| 7547 | |
| 7548 dst += STRLEN(eval_result); | |
| 7549 } | |
| 7550 | |
| 7551 reg_match = submatch_match; | |
| 7552 reg_mmatch = submatch_mmatch; | |
| 2011 | 7553 reg_firstlnum = submatch_firstlnum; |
| 7554 reg_maxline = submatch_maxline; | |
| 2904 | 7555 reg_line_lbr = submatch_line_lbr; |
| 7 | 7556 reg_win = save_reg_win; |
| 7557 ireg_ic = save_ireg_ic; | |
| 7558 can_f_submatch = FALSE; | |
| 7559 } | |
| 7560 #endif | |
| 7561 } | |
| 7562 else | |
| 7563 while ((c = *src++) != NUL) | |
| 7564 { | |
| 7565 if (c == '&' && magic) | |
| 7566 no = 0; | |
| 7567 else if (c == '\\' && *src != NUL) | |
| 7568 { | |
| 7569 if (*src == '&' && !magic) | |
| 7570 { | |
| 7571 ++src; | |
| 7572 no = 0; | |
| 7573 } | |
| 7574 else if ('0' <= *src && *src <= '9') | |
| 7575 { | |
| 7576 no = *src++ - '0'; | |
| 7577 } | |
| 7578 else if (vim_strchr((char_u *)"uUlLeE", *src)) | |
| 7579 { | |
| 7580 switch (*src++) | |
| 7581 { | |
| 4244 | 7582 case 'u': func_one = (fptr_T)do_upper; |
| 7 | 7583 continue; |
| 4244 | 7584 case 'U': func_all = (fptr_T)do_Upper; |
| 7 | 7585 continue; |
| 4244 | 7586 case 'l': func_one = (fptr_T)do_lower; |
| 7 | 7587 continue; |
| 4244 | 7588 case 'L': func_all = (fptr_T)do_Lower; |
| 7 | 7589 continue; |
| 7590 case 'e': | |
| 4244 | 7591 case 'E': func_one = func_all = (fptr_T)NULL; |
| 7 | 7592 continue; |
| 7593 } | |
| 7594 } | |
| 7595 } | |
| 7596 if (no < 0) /* Ordinary character. */ | |
| 7597 { | |
| 798 | 7598 if (c == K_SPECIAL && src[0] != NUL && src[1] != NUL) |
| 7599 { | |
| 1209 | 7600 /* Copy a special key as-is. */ |
| 798 | 7601 if (copy) |
| 7602 { | |
| 7603 *dst++ = c; | |
| 7604 *dst++ = *src++; | |
| 7605 *dst++ = *src++; | |
| 7606 } | |
| 7607 else | |
| 7608 { | |
| 7609 dst += 3; | |
| 7610 src += 2; | |
| 7611 } | |
| 7612 continue; | |
| 7613 } | |
| 7614 | |
| 7 | 7615 if (c == '\\' && *src != NUL) |
| 7616 { | |
| 7617 /* Check for abbreviations -- webb */ | |
| 7618 switch (*src) | |
| 7619 { | |
| 7620 case 'r': c = CAR; ++src; break; | |
| 7621 case 'n': c = NL; ++src; break; | |
| 7622 case 't': c = TAB; ++src; break; | |
| 7623 /* Oh no! \e already has meaning in subst pat :-( */ | |
| 7624 /* case 'e': c = ESC; ++src; break; */ | |
| 7625 case 'b': c = Ctrl_H; ++src; break; | |
| 7626 | |
| 7627 /* If "backslash" is TRUE the backslash will be removed | |
| 7628 * later. Used to insert a literal CR. */ | |
| 7629 default: if (backslash) | |
| 7630 { | |
| 7631 if (copy) | |
| 7632 *dst = '\\'; | |
| 7633 ++dst; | |
| 7634 } | |
| 7635 c = *src++; | |
| 7636 } | |
| 7637 } | |
| 798 | 7638 #ifdef FEAT_MBYTE |
| 7639 else if (has_mbyte) | |
| 7640 c = mb_ptr2char(src - 1); | |
| 7641 #endif | |
| 7 | 7642 |
| 7643 /* Write to buffer, if copy is set. */ | |
| 4244 | 7644 if (func_one != (fptr_T)NULL) |
| 7645 /* Turbo C complains without the typecast */ | |
| 7646 func_one = (fptr_T)(func_one(&cc, c)); | |
| 7647 else if (func_all != (fptr_T)NULL) | |
| 7648 /* Turbo C complains without the typecast */ | |
| 7649 func_all = (fptr_T)(func_all(&cc, c)); | |
| 7650 else /* just copy */ | |
| 772 | 7651 cc = c; |
| 7652 | |
| 7653 #ifdef FEAT_MBYTE | |
| 7654 if (has_mbyte) | |
| 7 | 7655 { |
|
2307
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7656 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
|
7657 |
| 7 | 7658 if (copy) |
| 772 | 7659 mb_char2bytes(cc, dst); |
| 7660 dst += mb_char2len(cc) - 1; | |
|
2307
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
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diff
changeset
|
7661 if (enc_utf8) |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7662 { |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7663 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
|
7664 |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7665 /* 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
|
7666 * 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
|
7667 if (clen < totlen) |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7668 { |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7669 if (copy) |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7670 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
|
7671 (size_t)(totlen - clen)); |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7672 dst += totlen - clen; |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7673 } |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7674 } |
|
81527f127fb1
Fix: Composing characters in :s substitute text were dropped.
Bram Moolenaar <bram@vim.org>
parents:
2247
diff
changeset
|
7675 src += totlen - 1; |
| 7 | 7676 } |
| 7677 else | |
| 7678 #endif | |
| 7679 if (copy) | |
| 772 | 7680 *dst = cc; |
| 7 | 7681 dst++; |
| 7682 } | |
| 7683 else | |
| 7684 { | |
| 7685 if (REG_MULTI) | |
| 7686 { | |
| 7687 clnum = reg_mmatch->startpos[no].lnum; | |
| 7688 if (clnum < 0 || reg_mmatch->endpos[no].lnum < 0) | |
| 7689 s = NULL; | |
| 7690 else | |
| 7691 { | |
| 7692 s = reg_getline(clnum) + reg_mmatch->startpos[no].col; | |
| 7693 if (reg_mmatch->endpos[no].lnum == clnum) | |
| 7694 len = reg_mmatch->endpos[no].col | |
| 7695 - reg_mmatch->startpos[no].col; | |
| 7696 else | |
| 7697 len = (int)STRLEN(s); | |
| 7698 } | |
| 7699 } | |
| 7700 else | |
| 7701 { | |
| 7702 s = reg_match->startp[no]; | |
| 7703 if (reg_match->endp[no] == NULL) | |
| 7704 s = NULL; | |
| 7705 else | |
| 7706 len = (int)(reg_match->endp[no] - s); | |
| 7707 } | |
| 7708 if (s != NULL) | |
| 7709 { | |
| 7710 for (;;) | |
| 7711 { | |
| 7712 if (len == 0) | |
| 7713 { | |
| 7714 if (REG_MULTI) | |
| 7715 { | |
| 7716 if (reg_mmatch->endpos[no].lnum == clnum) | |
| 7717 break; | |
| 7718 if (copy) | |
| 7719 *dst = CAR; | |
| 7720 ++dst; | |
| 7721 s = reg_getline(++clnum); | |
| 7722 if (reg_mmatch->endpos[no].lnum == clnum) | |
| 7723 len = reg_mmatch->endpos[no].col; | |
| 7724 else | |
| 7725 len = (int)STRLEN(s); | |
| 7726 } | |
| 7727 else | |
| 7728 break; | |
| 7729 } | |
| 7730 else if (*s == NUL) /* we hit NUL. */ | |
| 7731 { | |
| 7732 if (copy) | |
| 7733 EMSG(_(e_re_damg)); | |
| 7734 goto exit; | |
| 7735 } | |
| 7736 else | |
| 7737 { | |
| 7738 if (backslash && (*s == CAR || *s == '\\')) | |
| 7739 { | |
| 7740 /* | |
| 7741 * Insert a backslash in front of a CR, otherwise | |
| 7742 * it will be replaced by a line break. | |
| 7743 * Number of backslashes will be halved later, | |
| 7744 * double them here. | |
| 7745 */ | |
| 7746 if (copy) | |
| 7747 { | |
| 7748 dst[0] = '\\'; | |
| 7749 dst[1] = *s; | |
| 7750 } | |
| 7751 dst += 2; | |
| 7752 } | |
| 7753 else | |
| 7754 { | |
| 772 | 7755 #ifdef FEAT_MBYTE |
| 7756 if (has_mbyte) | |
| 7757 c = mb_ptr2char(s); | |
| 7758 else | |
| 7759 #endif | |
| 7760 c = *s; | |
| 7761 | |
| 4244 | 7762 if (func_one != (fptr_T)NULL) |
| 7763 /* Turbo C complains without the typecast */ | |
| 7764 func_one = (fptr_T)(func_one(&cc, c)); | |
| 7765 else if (func_all != (fptr_T)NULL) | |
| 7766 /* Turbo C complains without the typecast */ | |
| 7767 func_all = (fptr_T)(func_all(&cc, c)); | |
| 7768 else /* just copy */ | |
| 772 | 7769 cc = c; |
| 7770 | |
| 7771 #ifdef FEAT_MBYTE | |
| 7772 if (has_mbyte) | |
| 7 | 7773 { |
| 1332 | 7774 int l; |
| 7775 | |
| 7776 /* Copy composing characters separately, one | |
| 7777 * at a time. */ | |
| 7778 if (enc_utf8) | |
| 7779 l = utf_ptr2len(s) - 1; | |
| 7780 else | |
| 7781 l = mb_ptr2len(s) - 1; | |
| 772 | 7782 |
| 7783 s += l; | |
| 7784 len -= l; | |
| 7785 if (copy) | |
| 7786 mb_char2bytes(cc, dst); | |
| 7787 dst += mb_char2len(cc) - 1; | |
| 7 | 7788 } |
| 772 | 7789 else |
| 7790 #endif | |
| 7791 if (copy) | |
| 7792 *dst = cc; | |
| 7793 dst++; | |
| 7 | 7794 } |
| 772 | 7795 |
| 7 | 7796 ++s; |
| 7797 --len; | |
| 7798 } | |
| 7799 } | |
| 7800 } | |
| 7801 no = -1; | |
| 7802 } | |
| 7803 } | |
| 7804 if (copy) | |
| 7805 *dst = NUL; | |
| 7806 | |
| 7807 exit: | |
| 7808 return (int)((dst - dest) + 1); | |
| 7809 } | |
| 7810 | |
| 7811 #ifdef FEAT_EVAL | |
| 2012 | 7812 static char_u *reg_getline_submatch __ARGS((linenr_T lnum)); |
| 7813 | |
| 7 | 7814 /* |
| 2011 | 7815 * Call reg_getline() with the line numbers from the submatch. If a |
| 7816 * substitute() was used the reg_maxline and other values have been | |
| 7817 * overwritten. | |
| 7818 */ | |
| 7819 static char_u * | |
| 7820 reg_getline_submatch(lnum) | |
| 7821 linenr_T lnum; | |
| 7822 { | |
| 7823 char_u *s; | |
| 7824 linenr_T save_first = reg_firstlnum; | |
| 7825 linenr_T save_max = reg_maxline; | |
| 7826 | |
| 7827 reg_firstlnum = submatch_firstlnum; | |
| 7828 reg_maxline = submatch_maxline; | |
| 7829 | |
| 7830 s = reg_getline(lnum); | |
| 7831 | |
| 7832 reg_firstlnum = save_first; | |
| 7833 reg_maxline = save_max; | |
| 7834 return s; | |
| 7835 } | |
| 7836 | |
| 7837 /* | |
| 1209 | 7838 * Used for the submatch() function: get the string from the n'th submatch in |
| 7 | 7839 * allocated memory. |
| 7840 * Returns NULL when not in a ":s" command and for a non-existing submatch. | |
| 7841 */ | |
| 7842 char_u * | |
| 7843 reg_submatch(no) | |
| 7844 int no; | |
| 7845 { | |
| 7846 char_u *retval = NULL; | |
| 7847 char_u *s; | |
| 7848 int len; | |
| 7849 int round; | |
| 7850 linenr_T lnum; | |
| 7851 | |
| 840 | 7852 if (!can_f_submatch || no < 0) |
| 7 | 7853 return NULL; |
| 7854 | |
| 7855 if (submatch_match == NULL) | |
| 7856 { | |
| 7857 /* | |
| 7858 * First round: compute the length and allocate memory. | |
| 7859 * Second round: copy the text. | |
| 7860 */ | |
| 7861 for (round = 1; round <= 2; ++round) | |
| 7862 { | |
| 7863 lnum = submatch_mmatch->startpos[no].lnum; | |
| 7864 if (lnum < 0 || submatch_mmatch->endpos[no].lnum < 0) | |
| 7865 return NULL; | |
| 7866 | |
| 2011 | 7867 s = reg_getline_submatch(lnum) + submatch_mmatch->startpos[no].col; |
| 7 | 7868 if (s == NULL) /* anti-crash check, cannot happen? */ |
| 7869 break; | |
| 7870 if (submatch_mmatch->endpos[no].lnum == lnum) | |
| 7871 { | |
| 7872 /* Within one line: take form start to end col. */ | |
| 7873 len = submatch_mmatch->endpos[no].col | |
| 7874 - submatch_mmatch->startpos[no].col; | |
| 7875 if (round == 2) | |
| 418 | 7876 vim_strncpy(retval, s, len); |
| 7 | 7877 ++len; |
| 7878 } | |
| 7879 else | |
| 7880 { | |
| 7881 /* Multiple lines: take start line from start col, middle | |
| 7882 * lines completely and end line up to end col. */ | |
| 7883 len = (int)STRLEN(s); | |
| 7884 if (round == 2) | |
| 7885 { | |
| 7886 STRCPY(retval, s); | |
| 7887 retval[len] = '\n'; | |
| 7888 } | |
| 7889 ++len; | |
| 7890 ++lnum; | |
| 7891 while (lnum < submatch_mmatch->endpos[no].lnum) | |
| 7892 { | |
| 2011 | 7893 s = reg_getline_submatch(lnum++); |
| 7 | 7894 if (round == 2) |
| 7895 STRCPY(retval + len, s); | |
| 7896 len += (int)STRLEN(s); | |
| 7897 if (round == 2) | |
| 7898 retval[len] = '\n'; | |
| 7899 ++len; | |
| 7900 } | |
| 7901 if (round == 2) | |
| 2011 | 7902 STRNCPY(retval + len, reg_getline_submatch(lnum), |
| 7 | 7903 submatch_mmatch->endpos[no].col); |
| 7904 len += submatch_mmatch->endpos[no].col; | |
| 7905 if (round == 2) | |
| 7906 retval[len] = NUL; | |
| 7907 ++len; | |
| 7908 } | |
| 7909 | |
| 840 | 7910 if (retval == NULL) |
| 7 | 7911 { |
| 7912 retval = lalloc((long_u)len, TRUE); | |
| 840 | 7913 if (retval == NULL) |
| 7 | 7914 return NULL; |
| 7915 } | |
| 7916 } | |
| 7917 } | |
| 7918 else | |
| 7919 { | |
| 1815 | 7920 s = submatch_match->startp[no]; |
| 7921 if (s == NULL || submatch_match->endp[no] == NULL) | |
| 7 | 7922 retval = NULL; |
| 7923 else | |
| 7924 retval = vim_strnsave(s, (int)(submatch_match->endp[no] - s)); | |
| 7925 } | |
| 7926 | |
| 7927 return retval; | |
| 7928 } | |
| 5794 | 7929 |
| 7930 /* | |
| 7931 * Used for the submatch() function with the optional non-zero argument: get | |
| 7932 * the list of strings from the n'th submatch in allocated memory with NULs | |
| 7933 * represented in NLs. | |
| 7934 * Returns a list of allocated strings. Returns NULL when not in a ":s" | |
| 7935 * command, for a non-existing submatch and for any error. | |
| 7936 */ | |
| 7937 list_T * | |
| 7938 reg_submatch_list(no) | |
| 7939 int no; | |
| 7940 { | |
| 7941 char_u *s; | |
| 7942 linenr_T slnum; | |
| 7943 linenr_T elnum; | |
| 7944 colnr_T scol; | |
| 7945 colnr_T ecol; | |
| 7946 int i; | |
| 7947 list_T *list; | |
| 7948 int error = FALSE; | |
| 7949 | |
| 7950 if (!can_f_submatch || no < 0) | |
| 7951 return NULL; | |
| 7952 | |
| 7953 if (submatch_match == NULL) | |
| 7954 { | |
| 7955 slnum = submatch_mmatch->startpos[no].lnum; | |
| 7956 elnum = submatch_mmatch->endpos[no].lnum; | |
| 7957 if (slnum < 0 || elnum < 0) | |
| 7958 return NULL; | |
| 7959 | |
| 7960 scol = submatch_mmatch->startpos[no].col; | |
| 7961 ecol = submatch_mmatch->endpos[no].col; | |
| 7962 | |
| 7963 list = list_alloc(); | |
| 7964 if (list == NULL) | |
| 7965 return NULL; | |
| 7966 | |
| 7967 s = reg_getline_submatch(slnum) + scol; | |
| 7968 if (slnum == elnum) | |
| 7969 { | |
| 7970 if (list_append_string(list, s, ecol - scol) == FAIL) | |
| 7971 error = TRUE; | |
| 7972 } | |
| 7973 else | |
| 7974 { | |
| 7975 if (list_append_string(list, s, -1) == FAIL) | |
| 7976 error = TRUE; | |
| 7977 for (i = 1; i < elnum - slnum; i++) | |
| 7978 { | |
| 7979 s = reg_getline_submatch(slnum + i); | |
| 7980 if (list_append_string(list, s, -1) == FAIL) | |
| 7981 error = TRUE; | |
| 7982 } | |
| 7983 s = reg_getline_submatch(elnum); | |
| 7984 if (list_append_string(list, s, ecol) == FAIL) | |
| 7985 error = TRUE; | |
| 7986 } | |
| 7987 } | |
| 7988 else | |
| 7989 { | |
| 7990 s = submatch_match->startp[no]; | |
| 7991 if (s == NULL || submatch_match->endp[no] == NULL) | |
| 7992 return NULL; | |
| 7993 list = list_alloc(); | |
| 7994 if (list == NULL) | |
| 7995 return NULL; | |
| 7996 if (list_append_string(list, s, | |
| 7997 (int)(submatch_match->endp[no] - s)) == FAIL) | |
| 7998 error = TRUE; | |
| 7999 } | |
| 8000 | |
| 8001 if (error) | |
| 8002 { | |
| 8003 list_free(list, TRUE); | |
| 8004 return NULL; | |
| 8005 } | |
| 8006 return list; | |
| 8007 } | |
| 7 | 8008 #endif |
| 4444 | 8009 |
| 8010 static regengine_T bt_regengine = | |
| 8011 { | |
| 8012 bt_regcomp, | |
|
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|
8013 bt_regfree, |
| 4444 | 8014 bt_regexec_nl, |
| 6328 | 8015 bt_regexec_multi, |
| 8016 (char_u *)"" | |
| 4444 | 8017 }; |
| 8018 | |
| 8019 #include "regexp_nfa.c" | |
| 8020 | |
| 8021 static regengine_T nfa_regengine = | |
| 8022 { | |
| 8023 nfa_regcomp, | |
|
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|
8024 nfa_regfree, |
| 4444 | 8025 nfa_regexec_nl, |
| 6328 | 8026 nfa_regexec_multi, |
| 8027 (char_u *)"" | |
| 4444 | 8028 }; |
| 8029 | |
| 8030 /* Which regexp engine to use? Needed for vim_regcomp(). | |
| 8031 * Must match with 'regexpengine'. */ | |
| 8032 static int regexp_engine = 0; | |
| 6328 | 8033 |
| 4444 | 8034 #ifdef DEBUG |
| 8035 static char_u regname[][30] = { | |
| 8036 "AUTOMATIC Regexp Engine", | |
|
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|
8037 "BACKTRACKING Regexp Engine", |
| 4444 | 8038 "NFA Regexp Engine" |
| 8039 }; | |
| 8040 #endif | |
| 8041 | |
| 8042 /* | |
| 8043 * Compile a regular expression into internal code. | |
|
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|
8044 * Returns the program in allocated memory. |
|
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diff
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|
8045 * Use vim_regfree() to free the memory. |
|
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diff
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|
8046 * Returns NULL for an error. |
| 4444 | 8047 */ |
| 8048 regprog_T * | |
| 8049 vim_regcomp(expr_arg, re_flags) | |
| 8050 char_u *expr_arg; | |
| 8051 int re_flags; | |
| 8052 { | |
| 8053 regprog_T *prog = NULL; | |
| 8054 char_u *expr = expr_arg; | |
| 8055 | |
| 8056 regexp_engine = p_re; | |
| 8057 | |
| 8058 /* Check for prefix "\%#=", that sets the regexp engine */ | |
| 8059 if (STRNCMP(expr, "\\%#=", 4) == 0) | |
| 8060 { | |
| 8061 int newengine = expr[4] - '0'; | |
| 8062 | |
| 8063 if (newengine == AUTOMATIC_ENGINE | |
| 8064 || newengine == BACKTRACKING_ENGINE | |
| 8065 || newengine == NFA_ENGINE) | |
| 8066 { | |
| 8067 regexp_engine = expr[4] - '0'; | |
| 8068 expr += 5; | |
| 8069 #ifdef DEBUG | |
| 5897 | 8070 smsg((char_u *)"New regexp mode selected (%d): %s", |
| 8071 regexp_engine, regname[newengine]); | |
| 4444 | 8072 #endif |
| 8073 } | |
| 8074 else | |
| 8075 { | |
| 8076 EMSG(_("E864: \\%#= can only be followed by 0, 1, or 2. The automatic engine will be used ")); | |
| 8077 regexp_engine = AUTOMATIC_ENGINE; | |
| 8078 } | |
| 8079 } | |
| 8080 bt_regengine.expr = expr; | |
| 8081 nfa_regengine.expr = expr; | |
| 8082 | |
| 8083 /* | |
| 8084 * First try the NFA engine, unless backtracking was requested. | |
| 8085 */ | |
| 8086 if (regexp_engine != BACKTRACKING_ENGINE) | |
| 6533 | 8087 prog = nfa_regengine.regcomp(expr, |
| 8088 re_flags + (regexp_engine == AUTOMATIC_ENGINE ? RE_AUTO : 0)); | |
| 4444 | 8089 else |
| 8090 prog = bt_regengine.regcomp(expr, re_flags); | |
| 8091 | |
| 6328 | 8092 /* Check for error compiling regexp with initial engine. */ |
| 8093 if (prog == NULL) | |
| 4444 | 8094 { |
| 4460 | 8095 #ifdef BT_REGEXP_DEBUG_LOG |
| 4444 | 8096 if (regexp_engine != BACKTRACKING_ENGINE) /* debugging log for NFA */ |
| 8097 { | |
| 8098 FILE *f; | |
| 4460 | 8099 f = fopen(BT_REGEXP_DEBUG_LOG_NAME, "a"); |
| 4444 | 8100 if (f) |
| 8101 { | |
|
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|
8102 fprintf(f, "Syntax error in \"%s\"\n", expr); |
| 4444 | 8103 fclose(f); |
| 8104 } | |
| 8105 else | |
| 4460 | 8106 EMSG2("(NFA) Could not open \"%s\" to write !!!", |
| 8107 BT_REGEXP_DEBUG_LOG_NAME); | |
| 4444 | 8108 } |
| 8109 #endif | |
| 8110 /* | |
| 6328 | 8111 * If the NFA engine failed, try the backtracking engine. |
| 6533 | 8112 * The NFA engine also fails for patterns that it can't handle well |
| 8113 * but are still valid patterns, thus a retry should work. | |
| 8114 */ | |
| 4444 | 8115 if (regexp_engine == AUTOMATIC_ENGINE) |
| 6328 | 8116 { |
| 6533 | 8117 regexp_engine = BACKTRACKING_ENGINE; |
|
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8118 prog = bt_regengine.regcomp(expr, re_flags); |
| 6328 | 8119 } |
|
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8120 } |
| 4444 | 8121 |
| 6328 | 8122 if (prog != NULL) |
| 8123 { | |
| 8124 /* Store the info needed to call regcomp() again when the engine turns | |
| 8125 * out to be very slow when executing it. */ | |
| 8126 prog->re_engine = regexp_engine; | |
| 8127 prog->re_flags = re_flags; | |
| 8128 } | |
| 8129 | |
| 4444 | 8130 return prog; |
| 8131 } | |
| 8132 | |
| 8133 /* | |
|
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8134 * Free a compiled regexp program, returned by vim_regcomp(). |
|
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8135 */ |
|
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8136 void |
|
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|
8137 vim_regfree(prog) |
|
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8138 regprog_T *prog; |
|
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8139 { |
|
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8140 if (prog != NULL) |
|
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|
8141 prog->engine->regfree(prog); |
|
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8142 } |
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8143 |
| 6328 | 8144 #ifdef FEAT_EVAL |
| 8145 static void report_re_switch __ARGS((char_u *pat)); | |
| 8146 | |
| 8147 static void | |
| 8148 report_re_switch(pat) | |
| 8149 char_u *pat; | |
| 8150 { | |
| 8151 if (p_verbose > 0) | |
| 8152 { | |
| 8153 verbose_enter(); | |
| 8154 MSG_PUTS(_("Switching to backtracking RE engine for pattern: ")); | |
| 8155 MSG_PUTS(pat); | |
| 8156 verbose_leave(); | |
| 8157 } | |
| 8158 } | |
| 8159 #endif | |
| 8160 | |
| 8161 static int vim_regexec_both __ARGS((regmatch_T *rmp, char_u *line, colnr_T col, int nl)); | |
| 8162 | |
|
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|
8163 /* |
| 4444 | 8164 * Match a regexp against a string. |
| 8165 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 6375 | 8166 * Note: "rmp->regprog" may be freed and changed. |
| 4444 | 8167 * Uses curbuf for line count and 'iskeyword'. |
| 6328 | 8168 * When "nl" is TRUE consider a "\n" in "line" to be a line break. |
| 4444 | 8169 * |
| 8170 * Return TRUE if there is a match, FALSE if not. | |
| 8171 */ | |
| 6328 | 8172 static int |
| 8173 vim_regexec_both(rmp, line, col, nl) | |
| 8174 regmatch_T *rmp; | |
| 8175 char_u *line; /* string to match against */ | |
| 8176 colnr_T col; /* column to start looking for match */ | |
| 8177 int nl; | |
| 8178 { | |
| 8179 int result = rmp->regprog->engine->regexec_nl(rmp, line, col, nl); | |
| 8180 | |
| 8181 /* NFA engine aborted because it's very slow. */ | |
| 8182 if (rmp->regprog->re_engine == AUTOMATIC_ENGINE | |
| 8183 && result == NFA_TOO_EXPENSIVE) | |
| 8184 { | |
| 8185 int save_p_re = p_re; | |
| 8186 int re_flags = rmp->regprog->re_flags; | |
| 8187 char_u *pat = vim_strsave(((nfa_regprog_T *)rmp->regprog)->pattern); | |
| 8188 | |
| 8189 p_re = BACKTRACKING_ENGINE; | |
| 8190 vim_regfree(rmp->regprog); | |
| 8191 if (pat != NULL) | |
| 8192 { | |
| 8193 #ifdef FEAT_EVAL | |
| 8194 report_re_switch(pat); | |
| 8195 #endif | |
| 8196 rmp->regprog = vim_regcomp(pat, re_flags); | |
| 8197 if (rmp->regprog != NULL) | |
| 8198 result = rmp->regprog->engine->regexec_nl(rmp, line, col, nl); | |
| 8199 vim_free(pat); | |
| 8200 } | |
| 8201 | |
| 8202 p_re = save_p_re; | |
| 8203 } | |
| 6390 | 8204 return result > 0; |
| 6328 | 8205 } |
| 8206 | |
| 6375 | 8207 /* |
| 8208 * Note: "*prog" may be freed and changed. | |
| 6390 | 8209 * Return TRUE if there is a match, FALSE if not. |
| 6375 | 8210 */ |
| 8211 int | |
| 8212 vim_regexec_prog(prog, ignore_case, line, col) | |
| 8213 regprog_T **prog; | |
| 8214 int ignore_case; | |
| 8215 char_u *line; | |
| 8216 colnr_T col; | |
| 8217 { | |
| 8218 int r; | |
| 8219 regmatch_T regmatch; | |
| 8220 | |
| 8221 regmatch.regprog = *prog; | |
| 8222 regmatch.rm_ic = ignore_case; | |
| 8223 r = vim_regexec_both(®match, line, col, FALSE); | |
| 8224 *prog = regmatch.regprog; | |
| 8225 return r; | |
| 8226 } | |
| 8227 | |
| 8228 /* | |
| 8229 * Note: "rmp->regprog" may be freed and changed. | |
| 6390 | 8230 * Return TRUE if there is a match, FALSE if not. |
| 6375 | 8231 */ |
| 4444 | 8232 int |
| 8233 vim_regexec(rmp, line, col) | |
| 6328 | 8234 regmatch_T *rmp; |
| 8235 char_u *line; | |
| 8236 colnr_T col; | |
| 4444 | 8237 { |
| 6328 | 8238 return vim_regexec_both(rmp, line, col, FALSE); |
| 4444 | 8239 } |
| 8240 | |
| 8241 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
| 8242 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 8243 /* | |
| 8244 * Like vim_regexec(), but consider a "\n" in "line" to be a line break. | |
| 6375 | 8245 * Note: "rmp->regprog" may be freed and changed. |
| 6390 | 8246 * Return TRUE if there is a match, FALSE if not. |
| 4444 | 8247 */ |
| 8248 int | |
| 8249 vim_regexec_nl(rmp, line, col) | |
| 6328 | 8250 regmatch_T *rmp; |
| 8251 char_u *line; | |
| 8252 colnr_T col; | |
| 4444 | 8253 { |
| 6328 | 8254 return vim_regexec_both(rmp, line, col, TRUE); |
| 4444 | 8255 } |
| 8256 #endif | |
| 8257 | |
| 8258 /* | |
| 8259 * Match a regexp against multiple lines. | |
| 8260 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 6375 | 8261 * Note: "rmp->regprog" may be freed and changed. |
| 4444 | 8262 * Uses curbuf for line count and 'iskeyword'. |
| 8263 * | |
| 8264 * Return zero if there is no match. Return number of lines contained in the | |
| 8265 * match otherwise. | |
| 8266 */ | |
| 8267 long | |
| 8268 vim_regexec_multi(rmp, win, buf, lnum, col, tm) | |
| 8269 regmmatch_T *rmp; | |
| 8270 win_T *win; /* window in which to search or NULL */ | |
| 8271 buf_T *buf; /* buffer in which to search */ | |
| 8272 linenr_T lnum; /* nr of line to start looking for match */ | |
| 8273 colnr_T col; /* column to start looking for match */ | |
| 8274 proftime_T *tm; /* timeout limit or NULL */ | |
| 8275 { | |
| 6328 | 8276 int result = rmp->regprog->engine->regexec_multi( |
| 8277 rmp, win, buf, lnum, col, tm); | |
| 8278 | |
| 8279 /* NFA engine aborted because it's very slow. */ | |
| 8280 if (rmp->regprog->re_engine == AUTOMATIC_ENGINE | |
| 8281 && result == NFA_TOO_EXPENSIVE) | |
| 8282 { | |
| 8283 int save_p_re = p_re; | |
| 8284 int re_flags = rmp->regprog->re_flags; | |
| 8285 char_u *pat = vim_strsave(((nfa_regprog_T *)rmp->regprog)->pattern); | |
| 8286 | |
| 8287 p_re = BACKTRACKING_ENGINE; | |
| 8288 vim_regfree(rmp->regprog); | |
| 8289 if (pat != NULL) | |
| 8290 { | |
| 8291 #ifdef FEAT_EVAL | |
| 8292 report_re_switch(pat); | |
| 8293 #endif | |
| 8294 rmp->regprog = vim_regcomp(pat, re_flags); | |
| 8295 if (rmp->regprog != NULL) | |
| 8296 result = rmp->regprog->engine->regexec_multi( | |
| 8297 rmp, win, buf, lnum, col, tm); | |
| 8298 vim_free(pat); | |
| 8299 } | |
| 8300 p_re = save_p_re; | |
| 8301 } | |
| 8302 | |
| 6390 | 8303 return result <= 0 ? 0 : result; |
| 4444 | 8304 } |