Mercurial > vim
annotate src/charset.c @ 15636:6f1c7e9a6393 v8.1.0826
patch 8.1.0826: too many #ifdefs
commit https://github.com/vim/vim/commit/29ddebef4038d2d2b3bc9d8d3b0109f4046d6fbf
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Jan 26 17:28:26 2019 +0100
patch 8.1.0826: too many #ifdefs
Problem: Too many #ifdefs.
Solution: Graduate FEAT_VIRTUALEDIT. Adds about 10Kbyte to the code.
author | Bram Moolenaar <Bram@vim.org> |
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date | Sat, 26 Jan 2019 17:30:15 +0100 |
parents | 536dd2bc5ac9 |
children | a6ca8cf07a98 |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 | |
10 #include "vim.h" | |
11 | |
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12 #if defined(HAVE_WCHAR_H) |
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13 # include <wchar.h> /* for towupper() and towlower() */ |
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14 #endif |
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15 static int win_nolbr_chartabsize(win_T *wp, char_u *s, colnr_T col, int *headp); |
7 | 16 |
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17 static unsigned nr2hex(unsigned c); |
7 | 18 |
19 static int chartab_initialized = FALSE; | |
20 | |
21 /* b_chartab[] is an array of 32 bytes, each bit representing one of the | |
22 * characters 0-255. */ | |
23 #define SET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] |= (1 << ((c) & 0x7)) | |
24 #define RESET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] &= ~(1 << ((c) & 0x7)) | |
25 #define GET_CHARTAB(buf, c) ((buf)->b_chartab[(unsigned)(c) >> 3] & (1 << ((c) & 0x7))) | |
26 | |
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27 /* table used below, see init_chartab() for an explanation */ |
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28 static char_u g_chartab[256]; |
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29 |
7 | 30 /* |
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31 * Flags for g_chartab[]. |
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32 */ |
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33 #define CT_CELL_MASK 0x07 /* mask: nr of display cells (1, 2 or 4) */ |
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34 #define CT_PRINT_CHAR 0x10 /* flag: set for printable chars */ |
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35 #define CT_ID_CHAR 0x20 /* flag: set for ID chars */ |
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36 #define CT_FNAME_CHAR 0x40 /* flag: set for file name chars */ |
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37 |
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38 /* |
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39 * Fill g_chartab[]. Also fills curbuf->b_chartab[] with flags for keyword |
7 | 40 * characters for current buffer. |
41 * | |
42 * Depends on the option settings 'iskeyword', 'isident', 'isfname', | |
43 * 'isprint' and 'encoding'. | |
44 * | |
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45 * The index in g_chartab[] depends on 'encoding': |
7 | 46 * - For non-multi-byte index with the byte (same as the character). |
47 * - For DBCS index with the first byte. | |
48 * - For UTF-8 index with the character (when first byte is up to 0x80 it is | |
49 * the same as the character, if the first byte is 0x80 and above it depends | |
50 * on further bytes). | |
51 * | |
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52 * The contents of g_chartab[]: |
7 | 53 * - The lower two bits, masked by CT_CELL_MASK, give the number of display |
54 * cells the character occupies (1 or 2). Not valid for UTF-8 above 0x80. | |
55 * - CT_PRINT_CHAR bit is set when the character is printable (no need to | |
56 * translate the character before displaying it). Note that only DBCS | |
57 * characters can have 2 display cells and still be printable. | |
58 * - CT_FNAME_CHAR bit is set when the character can be in a file name. | |
59 * - CT_ID_CHAR bit is set when the character can be in an identifier. | |
60 * | |
61 * Return FAIL if 'iskeyword', 'isident', 'isfname' or 'isprint' option has an | |
62 * error, OK otherwise. | |
63 */ | |
64 int | |
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65 init_chartab(void) |
7 | 66 { |
67 return buf_init_chartab(curbuf, TRUE); | |
68 } | |
69 | |
70 int | |
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71 buf_init_chartab( |
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72 buf_T *buf, |
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73 int global) /* FALSE: only set buf->b_chartab[] */ |
7 | 74 { |
75 int c; | |
76 int c2; | |
77 char_u *p; | |
78 int i; | |
79 int tilde; | |
80 int do_isalpha; | |
81 | |
82 if (global) | |
83 { | |
84 /* | |
85 * Set the default size for printable characters: | |
86 * From <Space> to '~' is 1 (printable), others are 2 (not printable). | |
87 * This also inits all 'isident' and 'isfname' flags to FALSE. | |
88 * | |
89 * EBCDIC: all chars below ' ' are not printable, all others are | |
90 * printable. | |
91 */ | |
92 c = 0; | |
93 while (c < ' ') | |
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94 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
7 | 95 #ifdef EBCDIC |
96 while (c < 255) | |
97 #else | |
98 while (c <= '~') | |
99 #endif | |
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100 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
7 | 101 #ifdef FEAT_FKMAP |
102 if (p_altkeymap) | |
103 { | |
104 while (c < YE) | |
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105 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
7 | 106 } |
107 #endif | |
108 while (c < 256) | |
109 { | |
110 /* UTF-8: bytes 0xa0 - 0xff are printable (latin1) */ | |
111 if (enc_utf8 && c >= 0xa0) | |
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112 g_chartab[c++] = CT_PRINT_CHAR + 1; |
7 | 113 /* euc-jp characters starting with 0x8e are single width */ |
114 else if (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
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115 g_chartab[c++] = CT_PRINT_CHAR + 1; |
7 | 116 /* other double-byte chars can be printable AND double-width */ |
117 else if (enc_dbcs != 0 && MB_BYTE2LEN(c) == 2) | |
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118 g_chartab[c++] = CT_PRINT_CHAR + 2; |
7 | 119 else |
120 /* the rest is unprintable by default */ | |
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121 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
7 | 122 } |
123 | |
124 /* Assume that every multi-byte char is a filename character. */ | |
125 for (c = 1; c < 256; ++c) | |
126 if ((enc_dbcs != 0 && MB_BYTE2LEN(c) > 1) | |
127 || (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
128 || (enc_utf8 && c >= 0xa0)) | |
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129 g_chartab[c] |= CT_FNAME_CHAR; |
7 | 130 } |
131 | |
132 /* | |
133 * Init word char flags all to FALSE | |
134 */ | |
135 vim_memset(buf->b_chartab, 0, (size_t)32); | |
227 | 136 if (enc_dbcs != 0) |
137 for (c = 0; c < 256; ++c) | |
138 { | |
139 /* double-byte characters are probably word characters */ | |
140 if (MB_BYTE2LEN(c) == 2) | |
141 SET_CHARTAB(buf, c); | |
142 } | |
7 | 143 |
144 #ifdef FEAT_LISP | |
145 /* | |
146 * In lisp mode the '-' character is included in keywords. | |
147 */ | |
148 if (buf->b_p_lisp) | |
149 SET_CHARTAB(buf, '-'); | |
150 #endif | |
151 | |
152 /* Walk through the 'isident', 'iskeyword', 'isfname' and 'isprint' | |
153 * options Each option is a list of characters, character numbers or | |
154 * ranges, separated by commas, e.g.: "200-210,x,#-178,-" | |
155 */ | |
156 for (i = global ? 0 : 3; i <= 3; ++i) | |
157 { | |
158 if (i == 0) | |
159 p = p_isi; /* first round: 'isident' */ | |
160 else if (i == 1) | |
161 p = p_isp; /* second round: 'isprint' */ | |
162 else if (i == 2) | |
163 p = p_isf; /* third round: 'isfname' */ | |
164 else /* i == 3 */ | |
165 p = buf->b_p_isk; /* fourth round: 'iskeyword' */ | |
166 | |
167 while (*p) | |
168 { | |
169 tilde = FALSE; | |
170 do_isalpha = FALSE; | |
171 if (*p == '^' && p[1] != NUL) | |
172 { | |
173 tilde = TRUE; | |
174 ++p; | |
175 } | |
176 if (VIM_ISDIGIT(*p)) | |
177 c = getdigits(&p); | |
178 else | |
1955 | 179 if (has_mbyte) |
180 c = mb_ptr2char_adv(&p); | |
181 else | |
7 | 182 c = *p++; |
183 c2 = -1; | |
184 if (*p == '-' && p[1] != NUL) | |
185 { | |
186 ++p; | |
187 if (VIM_ISDIGIT(*p)) | |
188 c2 = getdigits(&p); | |
189 else | |
1979 | 190 if (has_mbyte) |
191 c2 = mb_ptr2char_adv(&p); | |
192 else | |
7 | 193 c2 = *p++; |
194 } | |
1979 | 195 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
7 | 196 || !(*p == NUL || *p == ',')) |
197 return FAIL; | |
198 | |
199 if (c2 == -1) /* not a range */ | |
200 { | |
201 /* | |
202 * A single '@' (not "@-@"): | |
203 * Decide on letters being ID/printable/keyword chars with | |
204 * standard function isalpha(). This takes care of locale for | |
205 * single-byte characters). | |
206 */ | |
207 if (c == '@') | |
208 { | |
209 do_isalpha = TRUE; | |
210 c = 1; | |
211 c2 = 255; | |
212 } | |
213 else | |
214 c2 = c; | |
215 } | |
216 while (c <= c2) | |
217 { | |
1365 | 218 /* Use the MB_ functions here, because isalpha() doesn't |
219 * work properly when 'encoding' is "latin1" and the locale is | |
220 * "C". */ | |
221 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c) | |
7 | 222 #ifdef FEAT_FKMAP |
223 || (p_altkeymap && (F_isalpha(c) || F_isdigit(c))) | |
224 #endif | |
225 ) | |
226 { | |
227 if (i == 0) /* (re)set ID flag */ | |
228 { | |
229 if (tilde) | |
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230 g_chartab[c] &= ~CT_ID_CHAR; |
7 | 231 else |
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232 g_chartab[c] |= CT_ID_CHAR; |
7 | 233 } |
234 else if (i == 1) /* (re)set printable */ | |
235 { | |
236 if ((c < ' ' | |
237 #ifndef EBCDIC | |
238 || c > '~' | |
239 #endif | |
240 #ifdef FEAT_FKMAP | |
241 || (p_altkeymap | |
242 && (F_isalpha(c) || F_isdigit(c))) | |
243 #endif | |
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244 // For double-byte we keep the cell width, so |
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245 // that we can detect it from the first byte. |
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246 ) && !(enc_dbcs && MB_BYTE2LEN(c) == 2)) |
7 | 247 { |
248 if (tilde) | |
249 { | |
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250 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) |
7 | 251 + ((dy_flags & DY_UHEX) ? 4 : 2); |
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252 g_chartab[c] &= ~CT_PRINT_CHAR; |
7 | 253 } |
254 else | |
255 { | |
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256 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) + 1; |
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257 g_chartab[c] |= CT_PRINT_CHAR; |
7 | 258 } |
259 } | |
260 } | |
261 else if (i == 2) /* (re)set fname flag */ | |
262 { | |
263 if (tilde) | |
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264 g_chartab[c] &= ~CT_FNAME_CHAR; |
7 | 265 else |
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266 g_chartab[c] |= CT_FNAME_CHAR; |
7 | 267 } |
268 else /* i == 3 */ /* (re)set keyword flag */ | |
269 { | |
270 if (tilde) | |
271 RESET_CHARTAB(buf, c); | |
272 else | |
273 SET_CHARTAB(buf, c); | |
274 } | |
275 } | |
276 ++c; | |
277 } | |
4096 | 278 |
279 c = *p; | |
7 | 280 p = skip_to_option_part(p); |
4096 | 281 if (c == ',' && *p == NUL) |
282 /* Trailing comma is not allowed. */ | |
283 return FAIL; | |
7 | 284 } |
285 } | |
286 chartab_initialized = TRUE; | |
287 return OK; | |
288 } | |
289 | |
290 /* | |
291 * Translate any special characters in buf[bufsize] in-place. | |
292 * The result is a string with only printable characters, but if there is not | |
293 * enough room, not all characters will be translated. | |
294 */ | |
295 void | |
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296 trans_characters( |
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297 char_u *buf, |
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298 int bufsize) |
7 | 299 { |
300 int len; /* length of string needing translation */ | |
301 int room; /* room in buffer after string */ | |
302 char_u *trs; /* translated character */ | |
303 int trs_len; /* length of trs[] */ | |
304 | |
305 len = (int)STRLEN(buf); | |
306 room = bufsize - len; | |
307 while (*buf != 0) | |
308 { | |
309 /* Assume a multi-byte character doesn't need translation. */ | |
474 | 310 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
7 | 311 len -= trs_len; |
312 else | |
313 { | |
314 trs = transchar_byte(*buf); | |
315 trs_len = (int)STRLEN(trs); | |
316 if (trs_len > 1) | |
317 { | |
318 room -= trs_len - 1; | |
319 if (room <= 0) | |
320 return; | |
321 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
322 } | |
323 mch_memmove(buf, trs, (size_t)trs_len); | |
324 --len; | |
325 } | |
326 buf += trs_len; | |
327 } | |
328 } | |
329 | |
1097 | 330 #if defined(FEAT_EVAL) || defined(FEAT_TITLE) || defined(FEAT_INS_EXPAND) \ |
331 || defined(PROTO) | |
7 | 332 /* |
333 * Translate a string into allocated memory, replacing special chars with | |
334 * printable chars. Returns NULL when out of memory. | |
335 */ | |
336 char_u * | |
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337 transstr(char_u *s) |
7 | 338 { |
339 char_u *res; | |
340 char_u *p; | |
341 int l, len, c; | |
342 char_u hexbuf[11]; | |
343 | |
344 if (has_mbyte) | |
345 { | |
346 /* Compute the length of the result, taking account of unprintable | |
347 * multi-byte characters. */ | |
348 len = 0; | |
349 p = s; | |
350 while (*p != NUL) | |
351 { | |
474 | 352 if ((l = (*mb_ptr2len)(p)) > 1) |
7 | 353 { |
354 c = (*mb_ptr2char)(p); | |
355 p += l; | |
356 if (vim_isprintc(c)) | |
357 len += l; | |
358 else | |
359 { | |
360 transchar_hex(hexbuf, c); | |
835 | 361 len += (int)STRLEN(hexbuf); |
7 | 362 } |
363 } | |
364 else | |
365 { | |
366 l = byte2cells(*p++); | |
367 if (l > 0) | |
368 len += l; | |
369 else | |
370 len += 4; /* illegal byte sequence */ | |
371 } | |
372 } | |
373 res = alloc((unsigned)(len + 1)); | |
374 } | |
375 else | |
376 res = alloc((unsigned)(vim_strsize(s) + 1)); | |
377 if (res != NULL) | |
378 { | |
379 *res = NUL; | |
380 p = s; | |
381 while (*p != NUL) | |
382 { | |
474 | 383 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
7 | 384 { |
385 c = (*mb_ptr2char)(p); | |
386 if (vim_isprintc(c)) | |
387 STRNCAT(res, p, l); /* append printable multi-byte char */ | |
388 else | |
389 transchar_hex(res + STRLEN(res), c); | |
390 p += l; | |
391 } | |
392 else | |
393 STRCAT(res, transchar_byte(*p++)); | |
394 } | |
395 } | |
396 return res; | |
397 } | |
398 #endif | |
399 | |
400 #if defined(FEAT_SYN_HL) || defined(FEAT_INS_EXPAND) || defined(PROTO) | |
401 /* | |
221 | 402 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
403 * current locale. | |
130 | 404 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
405 * Otherwise puts the result in "buf[buflen]". | |
7 | 406 */ |
407 char_u * | |
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408 str_foldcase( |
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409 char_u *str, |
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410 int orglen, |
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411 char_u *buf, |
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412 int buflen) |
7 | 413 { |
414 garray_T ga; | |
415 int i; | |
130 | 416 int len = orglen; |
7 | 417 |
418 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
419 #define GA_PTR(i) ((char_u *)ga.ga_data + i) | |
130 | 420 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
421 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + i) | |
7 | 422 |
130 | 423 /* Copy "str" into "buf" or allocated memory, unmodified. */ |
424 if (buf == NULL) | |
425 { | |
426 ga_init2(&ga, 1, 10); | |
427 if (ga_grow(&ga, len + 1) == FAIL) | |
428 return NULL; | |
429 mch_memmove(ga.ga_data, str, (size_t)len); | |
430 ga.ga_len = len; | |
431 } | |
432 else | |
433 { | |
434 if (len >= buflen) /* Ugly! */ | |
435 len = buflen - 1; | |
436 mch_memmove(buf, str, (size_t)len); | |
437 } | |
438 if (buf == NULL) | |
439 GA_CHAR(len) = NUL; | |
440 else | |
441 buf[len] = NUL; | |
7 | 442 |
443 /* Make each character lower case. */ | |
444 i = 0; | |
130 | 445 while (STR_CHAR(i) != NUL) |
7 | 446 { |
130 | 447 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
7 | 448 { |
449 if (enc_utf8) | |
450 { | |
1654 | 451 int c = utf_ptr2char(STR_PTR(i)); |
3263 | 452 int olen = utf_ptr2len(STR_PTR(i)); |
1654 | 453 int lc = utf_tolower(c); |
7 | 454 |
1654 | 455 /* Only replace the character when it is not an invalid |
456 * sequence (ASCII character or more than one byte) and | |
457 * utf_tolower() doesn't return the original character. */ | |
3263 | 458 if ((c < 0x80 || olen > 1) && c != lc) |
7 | 459 { |
3263 | 460 int nlen = utf_char2len(lc); |
7 | 461 |
462 /* If the byte length changes need to shift the following | |
463 * characters forward or backward. */ | |
3263 | 464 if (olen != nlen) |
7 | 465 { |
3263 | 466 if (nlen > olen) |
130 | 467 { |
3263 | 468 if (buf == NULL |
469 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
470 : len + nlen - olen >= buflen) | |
7 | 471 { |
472 /* out of memory, keep old char */ | |
473 lc = c; | |
3263 | 474 nlen = olen; |
7 | 475 } |
130 | 476 } |
3263 | 477 if (olen != nlen) |
7 | 478 { |
130 | 479 if (buf == NULL) |
480 { | |
3263 | 481 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
482 ga.ga_len += nlen - olen; | |
130 | 483 } |
484 else | |
485 { | |
3263 | 486 STRMOVE(buf + i + nlen, buf + i + olen); |
487 len += nlen - olen; | |
130 | 488 } |
7 | 489 } |
490 } | |
130 | 491 (void)utf_char2bytes(lc, STR_PTR(i)); |
7 | 492 } |
493 } | |
494 /* skip to next multi-byte char */ | |
474 | 495 i += (*mb_ptr2len)(STR_PTR(i)); |
7 | 496 } |
497 else | |
498 { | |
130 | 499 if (buf == NULL) |
500 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
501 else | |
502 buf[i] = TOLOWER_LOC(buf[i]); | |
7 | 503 ++i; |
504 } | |
505 } | |
506 | |
130 | 507 if (buf == NULL) |
508 return (char_u *)ga.ga_data; | |
509 return buf; | |
7 | 510 } |
511 #endif | |
512 | |
513 /* | |
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514 * Catch 22: g_chartab[] can't be initialized before the options are |
7 | 515 * initialized, and initializing options may cause transchar() to be called! |
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516 * When chartab_initialized == FALSE don't use g_chartab[]. |
7 | 517 * Does NOT work for multi-byte characters, c must be <= 255. |
518 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
519 * character! | |
520 */ | |
521 static char_u transchar_buf[7]; | |
522 | |
523 char_u * | |
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524 transchar(int c) |
7 | 525 { |
526 int i; | |
527 | |
528 i = 0; | |
529 if (IS_SPECIAL(c)) /* special key code, display as ~@ char */ | |
530 { | |
531 transchar_buf[0] = '~'; | |
532 transchar_buf[1] = '@'; | |
533 i = 2; | |
534 c = K_SECOND(c); | |
535 } | |
536 | |
537 if ((!chartab_initialized && ( | |
538 #ifdef EBCDIC | |
539 (c >= 64 && c < 255) | |
540 #else | |
541 (c >= ' ' && c <= '~') | |
542 #endif | |
543 #ifdef FEAT_FKMAP | |
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544 || (p_altkeymap && F_ischar(c)) |
7 | 545 #endif |
546 )) || (c < 256 && vim_isprintc_strict(c))) | |
547 { | |
548 /* printable character */ | |
549 transchar_buf[i] = c; | |
550 transchar_buf[i + 1] = NUL; | |
551 } | |
552 else | |
553 transchar_nonprint(transchar_buf + i, c); | |
554 return transchar_buf; | |
555 } | |
556 | |
557 /* | |
558 * Like transchar(), but called with a byte instead of a character. Checks | |
559 * for an illegal UTF-8 byte. | |
560 */ | |
561 char_u * | |
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562 transchar_byte(int c) |
7 | 563 { |
564 if (enc_utf8 && c >= 0x80) | |
565 { | |
566 transchar_nonprint(transchar_buf, c); | |
567 return transchar_buf; | |
568 } | |
569 return transchar(c); | |
570 } | |
571 | |
572 /* | |
573 * Convert non-printable character to two or more printable characters in | |
574 * "buf[]". "buf" needs to be able to hold five bytes. | |
575 * Does NOT work for multi-byte characters, c must be <= 255. | |
576 */ | |
577 void | |
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578 transchar_nonprint(char_u *buf, int c) |
7 | 579 { |
580 if (c == NL) | |
581 c = NUL; /* we use newline in place of a NUL */ | |
582 else if (c == CAR && get_fileformat(curbuf) == EOL_MAC) | |
583 c = NL; /* we use CR in place of NL in this case */ | |
584 | |
585 if (dy_flags & DY_UHEX) /* 'display' has "uhex" */ | |
586 transchar_hex(buf, c); | |
587 | |
588 #ifdef EBCDIC | |
589 /* For EBCDIC only the characters 0-63 and 255 are not printable */ | |
590 else if (CtrlChar(c) != 0 || c == DEL) | |
591 #else | |
592 else if (c <= 0x7f) /* 0x00 - 0x1f and 0x7f */ | |
593 #endif | |
594 { | |
595 buf[0] = '^'; | |
596 #ifdef EBCDIC | |
597 if (c == DEL) | |
598 buf[1] = '?'; /* DEL displayed as ^? */ | |
599 else | |
600 buf[1] = CtrlChar(c); | |
601 #else | |
602 buf[1] = c ^ 0x40; /* DEL displayed as ^? */ | |
603 #endif | |
604 | |
605 buf[2] = NUL; | |
606 } | |
607 else if (enc_utf8 && c >= 0x80) | |
608 { | |
609 transchar_hex(buf, c); | |
610 } | |
611 #ifndef EBCDIC | |
612 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) /* 0xa0 - 0xfe */ | |
613 { | |
614 buf[0] = '|'; | |
615 buf[1] = c - 0x80; | |
616 buf[2] = NUL; | |
617 } | |
618 #else | |
619 else if (c < 64) | |
620 { | |
621 buf[0] = '~'; | |
622 buf[1] = MetaChar(c); | |
623 buf[2] = NUL; | |
624 } | |
625 #endif | |
626 else /* 0x80 - 0x9f and 0xff */ | |
627 { | |
628 /* | |
629 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
630 * them as '~?' for now | |
631 */ | |
632 buf[0] = '~'; | |
633 #ifdef EBCDIC | |
634 buf[1] = '?'; /* 0xff displayed as ~? */ | |
635 #else | |
636 buf[1] = (c - 0x80) ^ 0x40; /* 0xff displayed as ~? */ | |
637 #endif | |
638 buf[2] = NUL; | |
639 } | |
640 } | |
641 | |
642 void | |
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643 transchar_hex(char_u *buf, int c) |
7 | 644 { |
645 int i = 0; | |
646 | |
647 buf[0] = '<'; | |
648 if (c > 255) | |
649 { | |
650 buf[++i] = nr2hex((unsigned)c >> 12); | |
651 buf[++i] = nr2hex((unsigned)c >> 8); | |
652 } | |
653 buf[++i] = nr2hex((unsigned)c >> 4); | |
1869 | 654 buf[++i] = nr2hex((unsigned)c); |
7 | 655 buf[++i] = '>'; |
656 buf[++i] = NUL; | |
657 } | |
658 | |
659 /* | |
660 * Convert the lower 4 bits of byte "c" to its hex character. | |
661 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
662 * function key 1. | |
663 */ | |
1869 | 664 static unsigned |
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665 nr2hex(unsigned c) |
7 | 666 { |
667 if ((c & 0xf) <= 9) | |
668 return (c & 0xf) + '0'; | |
669 return (c & 0xf) - 10 + 'a'; | |
670 } | |
671 | |
672 /* | |
673 * Return number of display cells occupied by byte "b". | |
674 * Caller must make sure 0 <= b <= 255. | |
675 * For multi-byte mode "b" must be the first byte of a character. | |
676 * A TAB is counted as two cells: "^I". | |
677 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
678 * cells depends on further bytes. | |
679 */ | |
680 int | |
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681 byte2cells(int b) |
7 | 682 { |
683 if (enc_utf8 && b >= 0x80) | |
684 return 0; | |
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685 return (g_chartab[b] & CT_CELL_MASK); |
7 | 686 } |
687 | |
688 /* | |
689 * Return number of display cells occupied by character "c". | |
690 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
691 * A TAB is counted as two cells: "^I" or four: "<09>". | |
692 */ | |
693 int | |
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694 char2cells(int c) |
7 | 695 { |
696 if (IS_SPECIAL(c)) | |
697 return char2cells(K_SECOND(c)) + 2; | |
698 if (c >= 0x80) | |
699 { | |
700 /* UTF-8: above 0x80 need to check the value */ | |
701 if (enc_utf8) | |
702 return utf_char2cells(c); | |
703 /* DBCS: double-byte means double-width, except for euc-jp with first | |
704 * byte 0x8e */ | |
705 if (enc_dbcs != 0 && c >= 0x100) | |
706 { | |
707 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
708 return 1; | |
709 return 2; | |
710 } | |
711 } | |
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712 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
7 | 713 } |
714 | |
715 /* | |
716 * Return number of display cells occupied by character at "*p". | |
717 * A TAB is counted as two cells: "^I" or four: "<09>". | |
718 */ | |
719 int | |
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720 ptr2cells(char_u *p) |
7 | 721 { |
722 /* For UTF-8 we need to look at more bytes if the first byte is >= 0x80. */ | |
723 if (enc_utf8 && *p >= 0x80) | |
724 return utf_ptr2cells(p); | |
725 /* For DBCS we can tell the cell count from the first byte. */ | |
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726 return (g_chartab[*p] & CT_CELL_MASK); |
7 | 727 } |
728 | |
729 /* | |
3292 | 730 * Return the number of character cells string "s" will take on the screen, |
7 | 731 * counting TABs as two characters: "^I". |
732 */ | |
733 int | |
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734 vim_strsize(char_u *s) |
7 | 735 { |
736 return vim_strnsize(s, (int)MAXCOL); | |
737 } | |
738 | |
739 /* | |
3292 | 740 * Return the number of character cells string "s[len]" will take on the |
741 * screen, counting TABs as two characters: "^I". | |
7 | 742 */ |
743 int | |
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744 vim_strnsize(char_u *s, int len) |
7 | 745 { |
746 int size = 0; | |
747 | |
748 while (*s != NUL && --len >= 0) | |
749 if (has_mbyte) | |
750 { | |
474 | 751 int l = (*mb_ptr2len)(s); |
7 | 752 |
753 size += ptr2cells(s); | |
754 s += l; | |
755 len -= l - 1; | |
756 } | |
757 else | |
758 size += byte2cells(*s++); | |
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759 |
7 | 760 return size; |
761 } | |
762 | |
763 /* | |
764 * Return the number of characters 'c' will take on the screen, taking | |
765 * into account the size of a tab. | |
766 * Use a define to make it fast, this is used very often!!! | |
767 * Also see getvcol() below. | |
768 */ | |
769 | |
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770 #ifdef FEAT_VARTABS |
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771 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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772 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
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773 { \ |
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774 return tabstop_padding(col, (buf)->b_p_ts, (buf)->b_p_vts_array); \ |
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775 } \ |
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776 else \ |
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777 return ptr2cells(p); |
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778 #else |
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779 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
7 | 780 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
781 { \ | |
782 int ts; \ | |
783 ts = (buf)->b_p_ts; \ | |
784 return (int)(ts - (col % ts)); \ | |
785 } \ | |
786 else \ | |
787 return ptr2cells(p); | |
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788 #endif |
7 | 789 |
790 int | |
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791 chartabsize(char_u *p, colnr_T col) |
7 | 792 { |
793 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
794 } | |
795 | |
796 #ifdef FEAT_LINEBREAK | |
797 static int | |
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798 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
7 | 799 { |
800 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
801 } | |
802 #endif | |
803 | |
804 /* | |
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805 * Return the number of characters the string 's' will take on the screen, |
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806 * taking into account the size of a tab. |
7 | 807 */ |
808 int | |
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809 linetabsize(char_u *s) |
7 | 810 { |
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811 return linetabsize_col(0, s); |
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812 } |
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813 |
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814 /* |
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815 * Like linetabsize(), but starting at column "startcol". |
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816 */ |
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817 int |
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818 linetabsize_col(int startcol, char_u *s) |
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819 { |
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820 colnr_T col = startcol; |
5995 | 821 char_u *line = s; /* pointer to start of line, for breakindent */ |
7 | 822 |
823 while (*s != NUL) | |
5995 | 824 col += lbr_chartabsize_adv(line, &s, col); |
7 | 825 return (int)col; |
826 } | |
827 | |
828 /* | |
829 * Like linetabsize(), but for a given window instead of the current one. | |
830 */ | |
831 int | |
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832 win_linetabsize(win_T *wp, char_u *line, colnr_T len) |
7 | 833 { |
834 colnr_T col = 0; | |
835 char_u *s; | |
836 | |
5995 | 837 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
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838 MB_PTR_ADV(s)) |
5995 | 839 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
7 | 840 return (int)col; |
841 } | |
842 | |
843 /* | |
42 | 844 * Return TRUE if 'c' is a normal identifier character: |
845 * Letters and characters from the 'isident' option. | |
7 | 846 */ |
847 int | |
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848 vim_isIDc(int c) |
7 | 849 { |
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850 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
7 | 851 } |
852 | |
853 /* | |
854 * return TRUE if 'c' is a keyword character: Letters and characters from | |
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855 * 'iskeyword' option for the current buffer. |
7 | 856 * For multi-byte characters mb_get_class() is used (builtin rules). |
857 */ | |
858 int | |
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859 vim_iswordc(int c) |
7 | 860 { |
4043 | 861 return vim_iswordc_buf(c, curbuf); |
862 } | |
863 | |
864 int | |
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865 vim_iswordc_buf(int c, buf_T *buf) |
4043 | 866 { |
7 | 867 if (c >= 0x100) |
868 { | |
869 if (enc_dbcs != 0) | |
1869 | 870 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
7 | 871 if (enc_utf8) |
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872 return utf_class_buf(c, buf) >= 2; |
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873 return FALSE; |
7 | 874 } |
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875 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
7 | 876 } |
877 | |
878 /* | |
879 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
880 */ | |
881 int | |
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882 vim_iswordp(char_u *p) |
7 | 883 { |
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884 return vim_iswordp_buf(p, curbuf); |
7 | 885 } |
886 | |
887 int | |
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888 vim_iswordp_buf(char_u *p, buf_T *buf) |
7 | 889 { |
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890 int c = *p; |
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891 |
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892 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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893 c = (*mb_ptr2char)(p); |
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894 return vim_iswordc_buf(c, buf); |
7 | 895 } |
896 | |
897 /* | |
898 * return TRUE if 'c' is a valid file-name character | |
899 * Assume characters above 0x100 are valid (multi-byte). | |
900 */ | |
901 int | |
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902 vim_isfilec(int c) |
7 | 903 { |
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904 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
7 | 905 } |
906 | |
907 /* | |
1369 | 908 * return TRUE if 'c' is a valid file-name character or a wildcard character |
909 * Assume characters above 0x100 are valid (multi-byte). | |
910 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
911 * returns false. | |
912 */ | |
913 int | |
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914 vim_isfilec_or_wc(int c) |
1369 | 915 { |
916 char_u buf[2]; | |
917 | |
918 buf[0] = (char_u)c; | |
919 buf[1] = NUL; | |
920 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
921 } | |
922 | |
923 /* | |
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924 * Return TRUE if 'c' is a printable character. |
7 | 925 * Assume characters above 0x100 are printable (multi-byte), except for |
926 * Unicode. | |
927 */ | |
928 int | |
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929 vim_isprintc(int c) |
7 | 930 { |
931 if (enc_utf8 && c >= 0x100) | |
932 return utf_printable(c); | |
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933 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 934 } |
935 | |
936 /* | |
937 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
938 * byte of a double-byte character. | |
939 */ | |
940 int | |
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941 vim_isprintc_strict(int c) |
7 | 942 { |
943 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
944 return FALSE; | |
945 if (enc_utf8 && c >= 0x100) | |
946 return utf_printable(c); | |
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947 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 948 } |
949 | |
950 /* | |
951 * like chartabsize(), but also check for line breaks on the screen | |
952 */ | |
953 int | |
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954 lbr_chartabsize( |
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955 char_u *line UNUSED, /* start of the line */ |
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956 unsigned char *s, |
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957 colnr_T col) |
7 | 958 { |
959 #ifdef FEAT_LINEBREAK | |
5995 | 960 if (!curwin->w_p_lbr && *p_sbr == NUL && !curwin->w_p_bri) |
7 | 961 { |
962 #endif | |
963 if (curwin->w_p_wrap) | |
964 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
965 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
966 #ifdef FEAT_LINEBREAK | |
967 } | |
5995 | 968 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
7 | 969 #endif |
970 } | |
971 | |
972 /* | |
973 * Call lbr_chartabsize() and advance the pointer. | |
974 */ | |
975 int | |
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976 lbr_chartabsize_adv( |
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977 char_u *line, /* start of the line */ |
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978 char_u **s, |
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979 colnr_T col) |
7 | 980 { |
981 int retval; | |
982 | |
5995 | 983 retval = lbr_chartabsize(line, *s, col); |
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984 MB_PTR_ADV(*s); |
7 | 985 return retval; |
986 } | |
987 | |
988 /* | |
989 * This function is used very often, keep it fast!!!! | |
990 * | |
991 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
992 * string at start of line. Warning: *headp is only set if it's a non-zero | |
993 * value, init to 0 before calling. | |
994 */ | |
995 int | |
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996 win_lbr_chartabsize( |
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997 win_T *wp, |
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998 char_u *line UNUSED, /* start of the line */ |
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999 char_u *s, |
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1000 colnr_T col, |
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1001 int *headp UNUSED) |
7 | 1002 { |
1003 #ifdef FEAT_LINEBREAK | |
1004 int c; | |
1005 int size; | |
1006 colnr_T col2; | |
6024 | 1007 colnr_T col_adj = 0; /* col + screen size of tab */ |
7 | 1008 colnr_T colmax; |
1009 int added; | |
1010 int mb_added = 0; | |
1011 int numberextra; | |
1012 char_u *ps; | |
1013 int tab_corr = (*s == TAB); | |
236 | 1014 int n; |
7 | 1015 |
1016 /* | |
5995 | 1017 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
7 | 1018 */ |
5995 | 1019 if (!wp->w_p_lbr && !wp->w_p_bri && *p_sbr == NUL) |
7 | 1020 #endif |
1021 { | |
1022 if (wp->w_p_wrap) | |
1023 return win_nolbr_chartabsize(wp, s, col, headp); | |
1024 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
1025 } | |
1026 | |
1027 #ifdef FEAT_LINEBREAK | |
1028 /* | |
1029 * First get normal size, without 'linebreak' | |
1030 */ | |
1031 size = win_chartabsize(wp, s, col); | |
1032 c = *s; | |
6024 | 1033 if (tab_corr) |
1034 col_adj = size - 1; | |
7 | 1035 |
1036 /* | |
1037 * If 'linebreak' set check at a blank before a non-blank if the line | |
1038 * needs a break here | |
1039 */ | |
1040 if (wp->w_p_lbr | |
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1041 && VIM_ISBREAK(c) |
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1042 && !VIM_ISBREAK((int)s[1]) |
7 | 1043 && wp->w_p_wrap |
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1044 && wp->w_width != 0) |
7 | 1045 { |
1046 /* | |
1047 * Count all characters from first non-blank after a blank up to next | |
1048 * non-blank after a blank. | |
1049 */ | |
1050 numberextra = win_col_off(wp); | |
1051 col2 = col; | |
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1052 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
7 | 1053 if (col >= colmax) |
236 | 1054 { |
6024 | 1055 colmax += col_adj; |
1056 n = colmax + win_col_off2(wp); | |
236 | 1057 if (n > 0) |
6024 | 1058 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
236 | 1059 } |
1060 | |
7 | 1061 for (;;) |
1062 { | |
1063 ps = s; | |
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1064 MB_PTR_ADV(s); |
7 | 1065 c = *s; |
1066 if (!(c != NUL | |
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1067 && (VIM_ISBREAK(c) |
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1068 || (!VIM_ISBREAK(c) |
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1069 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
7 | 1070 break; |
1071 | |
1072 col2 += win_chartabsize(wp, s, col2); | |
1073 if (col2 >= colmax) /* doesn't fit */ | |
1074 { | |
6024 | 1075 size = colmax - col + col_adj; |
7 | 1076 tab_corr = FALSE; |
1077 break; | |
1078 } | |
1079 } | |
1080 } | |
1081 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
1082 && wp->w_p_wrap && in_win_border(wp, col)) | |
1083 { | |
1084 ++size; /* Count the ">" in the last column. */ | |
1085 mb_added = 1; | |
1086 } | |
1087 | |
1088 /* | |
5995 | 1089 * May have to add something for 'breakindent' and/or 'showbreak' |
1090 * string at start of line. | |
7 | 1091 * Set *headp to the size of what we add. |
1092 */ | |
1093 added = 0; | |
5995 | 1094 if ((*p_sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
7 | 1095 { |
6503 | 1096 colnr_T sbrlen = 0; |
1097 int numberwidth = win_col_off(wp); | |
1098 | |
1099 numberextra = numberwidth; | |
7 | 1100 col += numberextra + mb_added; |
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1101 if (col >= (colnr_T)wp->w_width) |
7 | 1102 { |
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1103 col -= wp->w_width; |
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1104 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
6503 | 1105 if (col >= numberextra && numberextra > 0) |
6312 | 1106 col %= numberextra; |
6288 | 1107 if (*p_sbr != NUL) |
1108 { | |
6503 | 1109 sbrlen = (colnr_T)MB_CHARLEN(p_sbr); |
6288 | 1110 if (col >= sbrlen) |
1111 col -= sbrlen; | |
1112 } | |
6503 | 1113 if (col >= numberextra && numberextra > 0) |
7 | 1114 col = col % numberextra; |
6503 | 1115 else if (col > 0 && numberextra > 0) |
1116 col += numberwidth - win_col_off2(wp); | |
1117 | |
1118 numberwidth -= win_col_off2(wp); | |
7 | 1119 } |
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1120 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
7 | 1121 { |
5995 | 1122 added = 0; |
1123 if (*p_sbr != NUL) | |
6503 | 1124 { |
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1125 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
6503 | 1126 { |
1127 /* calculate effective window width */ | |
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1128 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
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1129 int prev_width = col ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
6503 | 1130 if (width == 0) |
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1131 width = (colnr_T)wp->w_width; |
6503 | 1132 added += ((size - prev_width) / width) * vim_strsize(p_sbr); |
1133 if ((size - prev_width) % width) | |
1134 /* wrapped, add another length of 'sbr' */ | |
1135 added += vim_strsize(p_sbr); | |
1136 } | |
1137 else | |
1138 added += vim_strsize(p_sbr); | |
1139 } | |
5995 | 1140 if (wp->w_p_bri) |
1141 added += get_breakindent_win(wp, line); | |
1142 | |
6160 | 1143 size += added; |
7 | 1144 if (col != 0) |
1145 added = 0; | |
1146 } | |
1147 } | |
1148 if (headp != NULL) | |
1149 *headp = added + mb_added; | |
1150 return size; | |
1151 #endif | |
1152 } | |
1153 | |
1154 /* | |
1155 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
1156 * 'wrap' is on. This means we need to check for a double-byte character that | |
1157 * doesn't fit at the end of the screen line. | |
1158 */ | |
1159 static int | |
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1160 win_nolbr_chartabsize( |
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1161 win_T *wp, |
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1162 char_u *s, |
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1163 colnr_T col, |
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1164 int *headp) |
7 | 1165 { |
1166 int n; | |
1167 | |
1168 if (*s == TAB && (!wp->w_p_list || lcs_tab1)) | |
1169 { | |
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1170 # ifdef FEAT_VARTABS |
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1171 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
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1172 wp->w_buffer->b_p_vts_array); |
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1173 # else |
7 | 1174 n = wp->w_buffer->b_p_ts; |
1175 return (int)(n - (col % n)); | |
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1176 # endif |
7 | 1177 } |
1178 n = ptr2cells(s); | |
1179 /* Add one cell for a double-width character in the last column of the | |
1180 * window, displayed with a ">". */ | |
1181 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) | |
1182 { | |
1183 if (headp != NULL) | |
1184 *headp = 1; | |
1185 return 3; | |
1186 } | |
1187 return n; | |
1188 } | |
1189 | |
1190 /* | |
1191 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
1192 * "wp". | |
1193 */ | |
1194 int | |
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1195 in_win_border(win_T *wp, colnr_T vcol) |
7 | 1196 { |
1869 | 1197 int width1; /* width of first line (after line number) */ |
1198 int width2; /* width of further lines */ | |
7 | 1199 |
1200 if (wp->w_width == 0) /* there is no border */ | |
1201 return FALSE; | |
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1202 width1 = wp->w_width - win_col_off(wp); |
1869 | 1203 if ((int)vcol < width1 - 1) |
7 | 1204 return FALSE; |
1869 | 1205 if ((int)vcol == width1 - 1) |
7 | 1206 return TRUE; |
1207 width2 = width1 + win_col_off2(wp); | |
1970 | 1208 if (width2 <= 0) |
1209 return FALSE; | |
7 | 1210 return ((vcol - width1) % width2 == width2 - 1); |
1211 } | |
1212 | |
1213 /* | |
1214 * Get virtual column number of pos. | |
1215 * start: on the first position of this character (TAB, ctrl) | |
1216 * cursor: where the cursor is on this character (first char, except for TAB) | |
1217 * end: on the last position of this character (TAB, ctrl) | |
1218 * | |
1219 * This is used very often, keep it fast! | |
1220 */ | |
1221 void | |
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1222 getvcol( |
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1223 win_T *wp, |
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1224 pos_T *pos, |
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1225 colnr_T *start, |
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1226 colnr_T *cursor, |
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1227 colnr_T *end) |
7 | 1228 { |
1229 colnr_T vcol; | |
1230 char_u *ptr; /* points to current char */ | |
1231 char_u *posptr; /* points to char at pos->col */ | |
5995 | 1232 char_u *line; /* start of the line */ |
7 | 1233 int incr; |
1234 int head; | |
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1235 #ifdef FEAT_VARTABS |
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1236 int *vts = wp->w_buffer->b_p_vts_array; |
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1237 #endif |
7 | 1238 int ts = wp->w_buffer->b_p_ts; |
1239 int c; | |
1240 | |
1241 vcol = 0; | |
5995 | 1242 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
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1243 if (pos->col == MAXCOL) |
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1244 posptr = NULL; /* continue until the NUL */ |
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1245 else |
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1246 { |
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1247 /* Special check for an empty line, which can happen on exit, when |
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1248 * ml_get_buf() always returns an empty string. */ |
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1249 if (*ptr == NUL) |
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1250 pos->col = 0; |
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1251 posptr = ptr + pos->col; |
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1252 if (has_mbyte) |
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1253 /* always start on the first byte */ |
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1254 posptr -= (*mb_head_off)(line, posptr); |
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1255 } |
7 | 1256 |
1257 /* | |
1258 * This function is used very often, do some speed optimizations. | |
5995 | 1259 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
1260 * use a simple loop. | |
7 | 1261 * Also use this when 'list' is set but tabs take their normal size. |
1262 */ | |
1263 if ((!wp->w_p_list || lcs_tab1 != NUL) | |
1264 #ifdef FEAT_LINEBREAK | |
5995 | 1265 && !wp->w_p_lbr && *p_sbr == NUL && !wp->w_p_bri |
7 | 1266 #endif |
1267 ) | |
1268 { | |
1269 for (;;) | |
1270 { | |
1271 head = 0; | |
1272 c = *ptr; | |
1273 /* make sure we don't go past the end of the line */ | |
1274 if (c == NUL) | |
1275 { | |
1276 incr = 1; /* NUL at end of line only takes one column */ | |
1277 break; | |
1278 } | |
1279 /* A tab gets expanded, depending on the current column */ | |
1280 if (c == TAB) | |
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1281 #ifdef FEAT_VARTABS |
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1282 incr = tabstop_padding(vcol, ts, vts); |
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1283 #else |
7 | 1284 incr = ts - (vcol % ts); |
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1285 #endif |
7 | 1286 else |
1287 { | |
1288 if (has_mbyte) | |
1289 { | |
1290 /* For utf-8, if the byte is >= 0x80, need to look at | |
1291 * further bytes to find the cell width. */ | |
1292 if (enc_utf8 && c >= 0x80) | |
1293 incr = utf_ptr2cells(ptr); | |
1294 else | |
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1295 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1296 |
1297 /* If a double-cell char doesn't fit at the end of a line | |
1298 * it wraps to the next line, it's like this char is three | |
1299 * cells wide. */ | |
1546 | 1300 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
1301 && in_win_border(wp, vcol)) | |
7 | 1302 { |
1303 ++incr; | |
1304 head = 1; | |
1305 } | |
1306 } | |
1307 else | |
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1308 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1309 } |
1310 | |
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1311 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
7 | 1312 break; |
1313 | |
1314 vcol += incr; | |
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1315 MB_PTR_ADV(ptr); |
7 | 1316 } |
1317 } | |
1318 else | |
1319 { | |
1320 for (;;) | |
1321 { | |
1322 /* A tab gets expanded, depending on the current column */ | |
1323 head = 0; | |
5995 | 1324 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
7 | 1325 /* make sure we don't go past the end of the line */ |
1326 if (*ptr == NUL) | |
1327 { | |
1328 incr = 1; /* NUL at end of line only takes one column */ | |
1329 break; | |
1330 } | |
1331 | |
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1332 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
7 | 1333 break; |
1334 | |
1335 vcol += incr; | |
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1336 MB_PTR_ADV(ptr); |
7 | 1337 } |
1338 } | |
1339 if (start != NULL) | |
1340 *start = vcol + head; | |
1341 if (end != NULL) | |
1342 *end = vcol + incr - 1; | |
1343 if (cursor != NULL) | |
1344 { | |
1345 if (*ptr == TAB | |
1346 && (State & NORMAL) | |
1347 && !wp->w_p_list | |
1348 && !virtual_active() | |
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1349 && !(VIsual_active |
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1350 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
7 | 1351 ) |
1352 *cursor = vcol + incr - 1; /* cursor at end */ | |
1353 else | |
1354 *cursor = vcol + head; /* cursor at start */ | |
1355 } | |
1356 } | |
1357 | |
1358 /* | |
1359 * Get virtual cursor column in the current window, pretending 'list' is off. | |
1360 */ | |
1361 colnr_T | |
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1362 getvcol_nolist(pos_T *posp) |
7 | 1363 { |
1364 int list_save = curwin->w_p_list; | |
1365 colnr_T vcol; | |
1366 | |
1367 curwin->w_p_list = FALSE; | |
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1368 if (posp->coladd) |
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1369 getvvcol(curwin, posp, NULL, &vcol, NULL); |
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1370 else |
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1371 getvcol(curwin, posp, NULL, &vcol, NULL); |
7 | 1372 curwin->w_p_list = list_save; |
1373 return vcol; | |
1374 } | |
1375 | |
1376 /* | |
1377 * Get virtual column in virtual mode. | |
1378 */ | |
1379 void | |
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1380 getvvcol( |
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1381 win_T *wp, |
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1382 pos_T *pos, |
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1383 colnr_T *start, |
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1384 colnr_T *cursor, |
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1385 colnr_T *end) |
7 | 1386 { |
1387 colnr_T col; | |
1388 colnr_T coladd; | |
1389 colnr_T endadd; | |
1390 char_u *ptr; | |
1391 | |
1392 if (virtual_active()) | |
1393 { | |
1394 /* For virtual mode, only want one value */ | |
1395 getvcol(wp, pos, &col, NULL, NULL); | |
1396 | |
1397 coladd = pos->coladd; | |
1398 endadd = 0; | |
1399 /* Cannot put the cursor on part of a wide character. */ | |
1400 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); | |
1869 | 1401 if (pos->col < (colnr_T)STRLEN(ptr)) |
7 | 1402 { |
1403 int c = (*mb_ptr2char)(ptr + pos->col); | |
1404 | |
1405 if (c != TAB && vim_isprintc(c)) | |
1406 { | |
1869 | 1407 endadd = (colnr_T)(char2cells(c) - 1); |
557 | 1408 if (coladd > endadd) /* past end of line */ |
1409 endadd = 0; | |
7 | 1410 else |
1411 coladd = 0; | |
1412 } | |
1413 } | |
1414 col += coladd; | |
1415 if (start != NULL) | |
1416 *start = col; | |
1417 if (cursor != NULL) | |
1418 *cursor = col; | |
1419 if (end != NULL) | |
1420 *end = col + endadd; | |
1421 } | |
1422 else | |
1423 getvcol(wp, pos, start, cursor, end); | |
1424 } | |
1425 | |
1426 /* | |
1427 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
1428 * Used for Visual block mode. | |
1429 */ | |
1430 void | |
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1431 getvcols( |
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1432 win_T *wp, |
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1433 pos_T *pos1, |
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1434 pos_T *pos2, |
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1435 colnr_T *left, |
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1436 colnr_T *right) |
7 | 1437 { |
1438 colnr_T from1, from2, to1, to2; | |
1439 | |
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1440 if (LT_POSP(pos1, pos2)) |
7 | 1441 { |
1442 getvvcol(wp, pos1, &from1, NULL, &to1); | |
1443 getvvcol(wp, pos2, &from2, NULL, &to2); | |
1444 } | |
1445 else | |
1446 { | |
1447 getvvcol(wp, pos2, &from1, NULL, &to1); | |
1448 getvvcol(wp, pos1, &from2, NULL, &to2); | |
1449 } | |
1450 if (from2 < from1) | |
1451 *left = from2; | |
1452 else | |
1453 *left = from1; | |
1454 if (to2 > to1) | |
1455 { | |
1456 if (*p_sel == 'e' && from2 - 1 >= to1) | |
1457 *right = from2 - 1; | |
1458 else | |
1459 *right = to2; | |
1460 } | |
1461 else | |
1462 *right = to1; | |
1463 } | |
1464 | |
1465 /* | |
1466 * skipwhite: skip over ' ' and '\t'. | |
1467 */ | |
1468 char_u * | |
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1469 skipwhite(char_u *q) |
7 | 1470 { |
1687 | 1471 char_u *p = q; |
1472 | |
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1473 while (VIM_ISWHITE(*p)) /* skip to next non-white */ |
7 | 1474 ++p; |
1475 return p; | |
1476 } | |
1477 | |
1478 /* | |
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1479 * getwhitecols: return the number of whitespace |
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1480 * columns (bytes) at the start of a given line |
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1481 */ |
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1482 int |
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1483 getwhitecols_curline() |
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1484 { |
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1485 return getwhitecols(ml_get_curline()); |
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1486 } |
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1487 |
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1488 int |
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1489 getwhitecols(char_u *p) |
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1490 { |
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1491 return skipwhite(p) - p; |
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1492 } |
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1493 |
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1494 /* |
293 | 1495 * skip over digits |
7 | 1496 */ |
1497 char_u * | |
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1498 skipdigits(char_u *q) |
7 | 1499 { |
1687 | 1500 char_u *p = q; |
1501 | |
7 | 1502 while (VIM_ISDIGIT(*p)) /* skip to next non-digit */ |
1503 ++p; | |
1504 return p; | |
1505 } | |
1506 | |
741 | 1507 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
301 | 1508 /* |
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1509 * skip over binary digits |
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1510 */ |
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1511 char_u * |
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1512 skipbin(char_u *q) |
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1513 { |
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1514 char_u *p = q; |
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1515 |
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1516 while (vim_isbdigit(*p)) /* skip to next non-digit */ |
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1517 ++p; |
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1518 return p; |
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1519 } |
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1520 |
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1521 /* |
301 | 1522 * skip over digits and hex characters |
1523 */ | |
1524 char_u * | |
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1525 skiphex(char_u *q) |
301 | 1526 { |
1687 | 1527 char_u *p = q; |
1528 | |
301 | 1529 while (vim_isxdigit(*p)) /* skip to next non-digit */ |
1530 ++p; | |
1531 return p; | |
1532 } | |
1533 #endif | |
1534 | |
293 | 1535 /* |
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1536 * skip to bin digit (or NUL after the string) |
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1537 */ |
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1538 char_u * |
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1539 skiptobin(char_u *q) |
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1540 { |
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1541 char_u *p = q; |
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1542 |
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1543 while (*p != NUL && !vim_isbdigit(*p)) /* skip to next digit */ |
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1544 ++p; |
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1545 return p; |
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1546 } |
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1547 |
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1548 /* |
293 | 1549 * skip to digit (or NUL after the string) |
1550 */ | |
1551 char_u * | |
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1552 skiptodigit(char_u *q) |
293 | 1553 { |
1687 | 1554 char_u *p = q; |
1555 | |
293 | 1556 while (*p != NUL && !VIM_ISDIGIT(*p)) /* skip to next digit */ |
1557 ++p; | |
1558 return p; | |
1559 } | |
1560 | |
1561 /* | |
1562 * skip to hex character (or NUL after the string) | |
1563 */ | |
1564 char_u * | |
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1565 skiptohex(char_u *q) |
293 | 1566 { |
1687 | 1567 char_u *p = q; |
1568 | |
293 | 1569 while (*p != NUL && !vim_isxdigit(*p)) /* skip to next digit */ |
1570 ++p; | |
1571 return p; | |
1572 } | |
1573 | |
7 | 1574 /* |
1575 * Variant of isdigit() that can handle characters > 0x100. | |
1576 * We don't use isdigit() here, because on some systems it also considers | |
1577 * superscript 1 to be a digit. | |
1578 * Use the VIM_ISDIGIT() macro for simple arguments. | |
1579 */ | |
1580 int | |
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1581 vim_isdigit(int c) |
7 | 1582 { |
1583 return (c >= '0' && c <= '9'); | |
1584 } | |
1585 | |
1586 /* | |
1587 * Variant of isxdigit() that can handle characters > 0x100. | |
1588 * We don't use isxdigit() here, because on some systems it also considers | |
1589 * superscript 1 to be a digit. | |
1590 */ | |
1591 int | |
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1592 vim_isxdigit(int c) |
7 | 1593 { |
1594 return (c >= '0' && c <= '9') | |
1595 || (c >= 'a' && c <= 'f') | |
1596 || (c >= 'A' && c <= 'F'); | |
1597 } | |
1598 | |
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1599 /* |
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1600 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1601 * characters > 0x100. |
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1602 */ |
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1603 int |
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1604 vim_isbdigit(int c) |
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1605 { |
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1606 return (c == '0' || c == '1'); |
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1607 } |
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1608 |
492 | 1609 /* |
1610 * Vim's own character class functions. These exist because many library | |
1611 * islower()/toupper() etc. do not work properly: they crash when used with | |
1612 * invalid values or can't handle latin1 when the locale is C. | |
1613 * Speed is most important here. | |
1614 */ | |
1615 #define LATIN1LOWER 'l' | |
1616 #define LATIN1UPPER 'U' | |
1617 | |
497 | 1618 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
3533 | 1619 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
1620 static char_u latin1lower[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@abcdefghijklmnopqrstuvwxyz[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xd7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"; | |
492 | 1621 |
1622 int | |
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1623 vim_islower(int c) |
492 | 1624 { |
1625 if (c <= '@') | |
1626 return FALSE; | |
1627 if (c >= 0x80) | |
1628 { | |
1629 if (enc_utf8) | |
1630 return utf_islower(c); | |
1631 if (c >= 0x100) | |
1632 { | |
1633 #ifdef HAVE_ISWLOWER | |
1634 if (has_mbyte) | |
1635 return iswlower(c); | |
1636 #endif | |
1637 /* islower() can't handle these chars and may crash */ | |
1638 return FALSE; | |
1639 } | |
1640 if (enc_latin1like) | |
1641 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
1642 } | |
1643 return islower(c); | |
1644 } | |
1645 | |
1646 int | |
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1647 vim_isupper(int c) |
492 | 1648 { |
1649 if (c <= '@') | |
1650 return FALSE; | |
1651 if (c >= 0x80) | |
1652 { | |
1653 if (enc_utf8) | |
1654 return utf_isupper(c); | |
1655 if (c >= 0x100) | |
1656 { | |
1657 #ifdef HAVE_ISWUPPER | |
1658 if (has_mbyte) | |
1659 return iswupper(c); | |
1660 #endif | |
1661 /* islower() can't handle these chars and may crash */ | |
1662 return FALSE; | |
1663 } | |
1664 if (enc_latin1like) | |
1665 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
1666 } | |
1667 return isupper(c); | |
1668 } | |
1669 | |
1670 int | |
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1671 vim_toupper(int c) |
492 | 1672 { |
1673 if (c <= '@') | |
1674 return c; | |
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1675 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1676 { |
1677 if (enc_utf8) | |
1678 return utf_toupper(c); | |
1679 if (c >= 0x100) | |
1680 { | |
1681 #ifdef HAVE_TOWUPPER | |
1682 if (has_mbyte) | |
1683 return towupper(c); | |
1684 #endif | |
1685 /* toupper() can't handle these chars and may crash */ | |
1686 return c; | |
1687 } | |
1688 if (enc_latin1like) | |
1689 return latin1upper[c]; | |
1690 } | |
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1691 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1692 return TOUPPER_ASC(c); |
492 | 1693 return TOUPPER_LOC(c); |
1694 } | |
1695 | |
1696 int | |
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1697 vim_tolower(int c) |
492 | 1698 { |
1699 if (c <= '@') | |
1700 return c; | |
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1701 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1702 { |
1703 if (enc_utf8) | |
1704 return utf_tolower(c); | |
1705 if (c >= 0x100) | |
1706 { | |
1707 #ifdef HAVE_TOWLOWER | |
1708 if (has_mbyte) | |
1709 return towlower(c); | |
1710 #endif | |
1711 /* tolower() can't handle these chars and may crash */ | |
1712 return c; | |
1713 } | |
1714 if (enc_latin1like) | |
1715 return latin1lower[c]; | |
1716 } | |
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1717 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1718 return TOLOWER_ASC(c); |
492 | 1719 return TOLOWER_LOC(c); |
1720 } | |
1721 | |
7 | 1722 /* |
1723 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
1724 */ | |
1725 char_u * | |
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1726 skiptowhite(char_u *p) |
7 | 1727 { |
1728 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1729 ++p; | |
1730 return p; | |
1731 } | |
1732 | |
1733 /* | |
1734 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
1735 */ | |
1736 char_u * | |
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1737 skiptowhite_esc(char_u *p) |
7 | 1738 { |
1739 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1740 { | |
1741 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
1742 ++p; | |
1743 ++p; | |
1744 } | |
1745 return p; | |
1746 } | |
1747 | |
1748 /* | |
1749 * Getdigits: Get a number from a string and skip over it. | |
1750 * Note: the argument is a pointer to a char_u pointer! | |
1751 */ | |
1752 long | |
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1753 getdigits(char_u **pp) |
7 | 1754 { |
1755 char_u *p; | |
1756 long retval; | |
1757 | |
1758 p = *pp; | |
1759 retval = atol((char *)p); | |
1760 if (*p == '-') /* skip negative sign */ | |
1761 ++p; | |
1762 p = skipdigits(p); /* skip to next non-digit */ | |
1763 *pp = p; | |
1764 return retval; | |
1765 } | |
1766 | |
1767 /* | |
1768 * Return TRUE if "lbuf" is empty or only contains blanks. | |
1769 */ | |
1770 int | |
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1771 vim_isblankline(char_u *lbuf) |
7 | 1772 { |
1773 char_u *p; | |
1774 | |
1775 p = skipwhite(lbuf); | |
1776 return (*p == NUL || *p == '\r' || *p == '\n'); | |
1777 } | |
1778 | |
1779 /* | |
1780 * Convert a string into a long and/or unsigned long, taking care of | |
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1781 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
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1782 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
7 | 1783 * 0 decimal |
1784 * '0' octal | |
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1785 * 'B' bin |
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1786 * 'b' bin |
7 | 1787 * 'X' hex |
1788 * 'x' hex | |
1789 * If "len" is not NULL, the length of the number in characters is returned. | |
1790 * If "nptr" is not NULL, the signed result is returned in it. | |
1791 * If "unptr" is not NULL, the unsigned result is returned in it. | |
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1792 * If "what" contains STR2NR_BIN recognize binary numbers |
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1793 * If "what" contains STR2NR_OCT recognize octal numbers |
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1794 * If "what" contains STR2NR_HEX recognize hex numbers |
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1795 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
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1796 * If maxlen > 0, check at a maximum maxlen chars. |
7 | 1797 */ |
1798 void | |
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1799 vim_str2nr( |
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1800 char_u *start, |
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1801 int *prep, /* return: type of number 0 = decimal, 'x' |
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1802 or 'X' is hex, '0' = octal, 'b' or 'B' |
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1803 is bin */ |
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1804 int *len, /* return: detected length of number */ |
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1805 int what, /* what numbers to recognize */ |
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1806 varnumber_T *nptr, /* return: signed result */ |
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1807 uvarnumber_T *unptr, /* return: unsigned result */ |
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1808 int maxlen) /* max length of string to check */ |
7 | 1809 { |
1810 char_u *ptr = start; | |
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1811 int pre = 0; /* default is decimal */ |
7 | 1812 int negative = FALSE; |
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1813 uvarnumber_T un = 0; |
39 | 1814 int n; |
7 | 1815 |
1816 if (ptr[0] == '-') | |
1817 { | |
1818 negative = TRUE; | |
1819 ++ptr; | |
1820 } | |
1821 | |
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1822 /* Recognize hex, octal, and bin. */ |
6927 | 1823 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
1824 && (maxlen == 0 || maxlen > 1)) | |
7 | 1825 { |
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1826 pre = ptr[1]; |
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1827 if ((what & STR2NR_HEX) |
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1828 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
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1829 && (maxlen == 0 || maxlen > 2)) |
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1830 /* hexadecimal */ |
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1831 ptr += 2; |
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1832 else if ((what & STR2NR_BIN) |
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1833 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
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1834 && (maxlen == 0 || maxlen > 2)) |
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1835 /* binary */ |
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1836 ptr += 2; |
7 | 1837 else |
1838 { | |
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1839 /* decimal or octal, default is decimal */ |
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1840 pre = 0; |
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1841 if (what & STR2NR_OCT) |
39 | 1842 { |
1843 /* Don't interpret "0", "08" or "0129" as octal. */ | |
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1844 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
39 | 1845 { |
1846 if (ptr[n] > '7') | |
1847 { | |
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1848 pre = 0; /* can't be octal */ |
39 | 1849 break; |
1850 } | |
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1851 pre = '0'; /* assume octal */ |
39 | 1852 } |
1853 } | |
7 | 1854 } |
1855 } | |
1856 | |
1857 /* | |
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1858 * Do the string-to-numeric conversion "manually" to avoid sscanf quirks. |
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1859 */ |
6927 | 1860 n = 1; |
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1861 if (pre == 'B' || pre == 'b' || what == STR2NR_BIN + STR2NR_FORCE) |
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1862 { |
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1863 /* bin */ |
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1864 if (pre != 0) |
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1865 n += 2; /* skip over "0b" */ |
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1866 while ('0' <= *ptr && *ptr <= '1') |
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1867 { |
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1868 /* avoid ubsan error for overflow */ |
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1869 if (un <= UVARNUM_MAX / 2) |
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1870 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
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1871 else |
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1872 un = UVARNUM_MAX; |
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1873 ++ptr; |
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1874 if (n++ == maxlen) |
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1875 break; |
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1876 } |
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1877 } |
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1878 else if (pre == '0' || what == STR2NR_OCT + STR2NR_FORCE) |
7 | 1879 { |
293 | 1880 /* octal */ |
1881 while ('0' <= *ptr && *ptr <= '7') | |
7 | 1882 { |
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1883 /* avoid ubsan error for overflow */ |
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1884 if (un <= UVARNUM_MAX / 8) |
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1885 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
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1886 else |
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1887 un = UVARNUM_MAX; |
293 | 1888 ++ptr; |
6927 | 1889 if (n++ == maxlen) |
1890 break; | |
7 | 1891 } |
293 | 1892 } |
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1893 else if (pre != 0 || what == STR2NR_HEX + STR2NR_FORCE) |
293 | 1894 { |
1895 /* hex */ | |
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1896 if (pre != 0) |
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1897 n += 2; /* skip over "0x" */ |
293 | 1898 while (vim_isxdigit(*ptr)) |
7 | 1899 { |
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1900 /* avoid ubsan error for overflow */ |
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1901 if (un <= UVARNUM_MAX / 16) |
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1902 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
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1903 else |
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1904 un = UVARNUM_MAX; |
293 | 1905 ++ptr; |
6927 | 1906 if (n++ == maxlen) |
1907 break; | |
7 | 1908 } |
1909 } | |
1910 else | |
1911 { | |
1912 /* decimal */ | |
1913 while (VIM_ISDIGIT(*ptr)) | |
1914 { | |
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1915 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
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1916 |
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1917 /* avoid ubsan error for overflow */ |
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1918 if (un < UVARNUM_MAX / 10 |
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1919 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
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1920 un = 10 * un + digit; |
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1921 else |
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1922 un = UVARNUM_MAX; |
7 | 1923 ++ptr; |
6927 | 1924 if (n++ == maxlen) |
1925 break; | |
7 | 1926 } |
1927 } | |
1928 | |
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1929 if (prep != NULL) |
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1930 *prep = pre; |
7 | 1931 if (len != NULL) |
1932 *len = (int)(ptr - start); | |
1933 if (nptr != NULL) | |
16 | 1934 { |
1935 if (negative) /* account for leading '-' for decimal numbers */ | |
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1936 { |
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1937 /* avoid ubsan error for overflow */ |
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1938 if (un > VARNUM_MAX) |
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1939 *nptr = VARNUM_MIN; |
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1940 else |
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1941 *nptr = -(varnumber_T)un; |
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1942 } |
16 | 1943 else |
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1944 { |
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1945 if (un > VARNUM_MAX) |
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1946 un = VARNUM_MAX; |
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1947 *nptr = (varnumber_T)un; |
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1948 } |
16 | 1949 } |
7 | 1950 if (unptr != NULL) |
1951 *unptr = un; | |
1952 } | |
1953 | |
1954 /* | |
1955 * Return the value of a single hex character. | |
1956 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
1957 */ | |
1958 int | |
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1959 hex2nr(int c) |
7 | 1960 { |
1961 if (c >= 'a' && c <= 'f') | |
1962 return c - 'a' + 10; | |
1963 if (c >= 'A' && c <= 'F') | |
1964 return c - 'A' + 10; | |
1965 return c - '0'; | |
1966 } | |
1967 | |
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1968 #if defined(FEAT_TERMRESPONSE) || defined(FEAT_GUI_GTK) || defined(PROTO) |
7 | 1969 /* |
1970 * Convert two hex characters to a byte. | |
1971 * Return -1 if one of the characters is not hex. | |
1972 */ | |
1973 int | |
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1974 hexhex2nr(char_u *p) |
7 | 1975 { |
1976 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
1977 return -1; | |
1978 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
1979 } | |
1980 #endif | |
1981 | |
1982 /* | |
1983 * Return TRUE if "str" starts with a backslash that should be removed. | |
1984 * For MS-DOS, WIN32 and OS/2 this is only done when the character after the | |
1985 * backslash is not a normal file name character. | |
1986 * '$' is a valid file name character, we don't remove the backslash before | |
1987 * it. This means it is not possible to use an environment variable after a | |
1988 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
1989 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
1990 * removed. Assume a file name doesn't start with a space. | |
1991 * For multi-byte names, never remove a backslash before a non-ascii | |
1992 * character, assume that all multi-byte characters are valid file name | |
1993 * characters. | |
1994 */ | |
1995 int | |
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1996 rem_backslash(char_u *str) |
7 | 1997 { |
1998 #ifdef BACKSLASH_IN_FILENAME | |
1999 return (str[0] == '\\' | |
2000 && str[1] < 0x80 | |
2001 && (str[1] == ' ' | |
2002 || (str[1] != NUL | |
2003 && str[1] != '*' | |
2004 && str[1] != '?' | |
2005 && !vim_isfilec(str[1])))); | |
2006 #else | |
2007 return (str[0] == '\\' && str[1] != NUL); | |
2008 #endif | |
2009 } | |
2010 | |
2011 /* | |
2012 * Halve the number of backslashes in a file name argument. | |
2013 * For MS-DOS we only do this if the character after the backslash | |
2014 * is not a normal file character. | |
2015 */ | |
2016 void | |
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2017 backslash_halve(char_u *p) |
7 | 2018 { |
2019 for ( ; *p; ++p) | |
2020 if (rem_backslash(p)) | |
1621 | 2021 STRMOVE(p, p + 1); |
7 | 2022 } |
2023 | |
2024 /* | |
2025 * backslash_halve() plus save the result in allocated memory. | |
2026 */ | |
2027 char_u * | |
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2028 backslash_halve_save(char_u *p) |
7 | 2029 { |
2030 char_u *res; | |
2031 | |
2032 res = vim_strsave(p); | |
2033 if (res == NULL) | |
2034 return p; | |
2035 backslash_halve(res); | |
2036 return res; | |
2037 } | |
2038 | |
2039 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
2040 /* | |
2041 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
2042 * The first 64 entries have been added to map control characters defined in | |
2043 * ascii.h | |
2044 */ | |
2045 static char_u ebcdic2ascii_tab[256] = | |
2046 { | |
2047 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
2048 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
2049 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
2050 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
2051 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
2052 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
2053 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
2054 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
2055 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
2056 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
2057 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
2058 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
2059 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
2060 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
2061 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
2062 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
2063 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
2064 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
2065 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
2066 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
2067 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
2068 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
2069 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
2070 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
2071 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
2072 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
2073 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
2074 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
2075 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
2076 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
2077 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
2078 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
2079 }; | |
2080 | |
2081 /* | |
2082 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
2083 * wanting 7-bit ASCII characters out the other end. | |
2084 */ | |
2085 void | |
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2086 ebcdic2ascii(char_u *buffer, int len) |
7 | 2087 { |
2088 int i; | |
2089 | |
2090 for (i = 0; i < len; i++) | |
2091 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
2092 } | |
2093 #endif |