Mercurial > vim
annotate src/charset.c @ 7807:1a5d34492798 v7.4.1200
commit https://github.com/vim/vim/commit/d99df423c559d85c17779b3685426c489554908c
Author: Bram Moolenaar <Bram@vim.org>
Date: Fri Jan 29 23:20:40 2016 +0100
patch 7.4.1200
Problem: Still using __ARGS.
Solution: Remove __ARGS in several files. (script by Hirohito Higashi)
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Fri, 29 Jan 2016 23:30:06 +0100 |
parents | af3c41a3c53f |
children | 83861277e6a3 |
rev | line source |
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7 | 1 /* vi:set ts=8 sts=4 sw=4: |
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 | |
12 #ifdef FEAT_LINEBREAK | |
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13 static int win_chartabsize(win_T *wp, char_u *p, colnr_T col); |
7 | 14 #endif |
15 | |
16 #ifdef FEAT_MBYTE | |
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17 # if defined(HAVE_WCHAR_H) |
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Include wchar.h in charset.c for towupper().
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18 # include <wchar.h> /* for towupper() and towlower() */ |
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Include wchar.h in charset.c for towupper().
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19 # endif |
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20 static int win_nolbr_chartabsize(win_T *wp, char_u *s, colnr_T col, int *headp); |
7 | 21 #endif |
22 | |
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23 static unsigned nr2hex(unsigned c); |
7 | 24 |
25 static int chartab_initialized = FALSE; | |
26 | |
27 /* b_chartab[] is an array of 32 bytes, each bit representing one of the | |
28 * characters 0-255. */ | |
29 #define SET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] |= (1 << ((c) & 0x7)) | |
30 #define RESET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] &= ~(1 << ((c) & 0x7)) | |
31 #define GET_CHARTAB(buf, c) ((buf)->b_chartab[(unsigned)(c) >> 3] & (1 << ((c) & 0x7))) | |
32 | |
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33 /* table used below, see init_chartab() for an explanation */ |
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34 static char_u g_chartab[256]; |
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35 |
7 | 36 /* |
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37 * Flags for g_chartab[]. |
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38 */ |
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39 #define CT_CELL_MASK 0x07 /* mask: nr of display cells (1, 2 or 4) */ |
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40 #define CT_PRINT_CHAR 0x10 /* flag: set for printable chars */ |
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41 #define CT_ID_CHAR 0x20 /* flag: set for ID chars */ |
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42 #define CT_FNAME_CHAR 0x40 /* flag: set for file name chars */ |
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43 |
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44 /* |
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45 * Fill g_chartab[]. Also fills curbuf->b_chartab[] with flags for keyword |
7 | 46 * characters for current buffer. |
47 * | |
48 * Depends on the option settings 'iskeyword', 'isident', 'isfname', | |
49 * 'isprint' and 'encoding'. | |
50 * | |
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51 * The index in g_chartab[] depends on 'encoding': |
7 | 52 * - For non-multi-byte index with the byte (same as the character). |
53 * - For DBCS index with the first byte. | |
54 * - For UTF-8 index with the character (when first byte is up to 0x80 it is | |
55 * the same as the character, if the first byte is 0x80 and above it depends | |
56 * on further bytes). | |
57 * | |
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58 * The contents of g_chartab[]: |
7 | 59 * - The lower two bits, masked by CT_CELL_MASK, give the number of display |
60 * cells the character occupies (1 or 2). Not valid for UTF-8 above 0x80. | |
61 * - CT_PRINT_CHAR bit is set when the character is printable (no need to | |
62 * translate the character before displaying it). Note that only DBCS | |
63 * characters can have 2 display cells and still be printable. | |
64 * - CT_FNAME_CHAR bit is set when the character can be in a file name. | |
65 * - CT_ID_CHAR bit is set when the character can be in an identifier. | |
66 * | |
67 * Return FAIL if 'iskeyword', 'isident', 'isfname' or 'isprint' option has an | |
68 * error, OK otherwise. | |
69 */ | |
70 int | |
71 init_chartab() | |
72 { | |
73 return buf_init_chartab(curbuf, TRUE); | |
74 } | |
75 | |
76 int | |
77 buf_init_chartab(buf, global) | |
78 buf_T *buf; | |
79 int global; /* FALSE: only set buf->b_chartab[] */ | |
80 { | |
81 int c; | |
82 int c2; | |
83 char_u *p; | |
84 int i; | |
85 int tilde; | |
86 int do_isalpha; | |
87 | |
88 if (global) | |
89 { | |
90 /* | |
91 * Set the default size for printable characters: | |
92 * From <Space> to '~' is 1 (printable), others are 2 (not printable). | |
93 * This also inits all 'isident' and 'isfname' flags to FALSE. | |
94 * | |
95 * EBCDIC: all chars below ' ' are not printable, all others are | |
96 * printable. | |
97 */ | |
98 c = 0; | |
99 while (c < ' ') | |
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100 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
7 | 101 #ifdef EBCDIC |
102 while (c < 255) | |
103 #else | |
104 while (c <= '~') | |
105 #endif | |
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106 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
7 | 107 #ifdef FEAT_FKMAP |
108 if (p_altkeymap) | |
109 { | |
110 while (c < YE) | |
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111 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
7 | 112 } |
113 #endif | |
114 while (c < 256) | |
115 { | |
116 #ifdef FEAT_MBYTE | |
117 /* UTF-8: bytes 0xa0 - 0xff are printable (latin1) */ | |
118 if (enc_utf8 && c >= 0xa0) | |
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119 g_chartab[c++] = CT_PRINT_CHAR + 1; |
7 | 120 /* euc-jp characters starting with 0x8e are single width */ |
121 else if (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
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122 g_chartab[c++] = CT_PRINT_CHAR + 1; |
7 | 123 /* other double-byte chars can be printable AND double-width */ |
124 else if (enc_dbcs != 0 && MB_BYTE2LEN(c) == 2) | |
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125 g_chartab[c++] = CT_PRINT_CHAR + 2; |
7 | 126 else |
127 #endif | |
128 /* the rest is unprintable by default */ | |
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129 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
7 | 130 } |
131 | |
132 #ifdef FEAT_MBYTE | |
133 /* Assume that every multi-byte char is a filename character. */ | |
134 for (c = 1; c < 256; ++c) | |
135 if ((enc_dbcs != 0 && MB_BYTE2LEN(c) > 1) | |
136 || (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
137 || (enc_utf8 && c >= 0xa0)) | |
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138 g_chartab[c] |= CT_FNAME_CHAR; |
7 | 139 #endif |
140 } | |
141 | |
142 /* | |
143 * Init word char flags all to FALSE | |
144 */ | |
145 vim_memset(buf->b_chartab, 0, (size_t)32); | |
146 #ifdef FEAT_MBYTE | |
227 | 147 if (enc_dbcs != 0) |
148 for (c = 0; c < 256; ++c) | |
149 { | |
150 /* double-byte characters are probably word characters */ | |
151 if (MB_BYTE2LEN(c) == 2) | |
152 SET_CHARTAB(buf, c); | |
153 } | |
7 | 154 #endif |
155 | |
156 #ifdef FEAT_LISP | |
157 /* | |
158 * In lisp mode the '-' character is included in keywords. | |
159 */ | |
160 if (buf->b_p_lisp) | |
161 SET_CHARTAB(buf, '-'); | |
162 #endif | |
163 | |
164 /* Walk through the 'isident', 'iskeyword', 'isfname' and 'isprint' | |
165 * options Each option is a list of characters, character numbers or | |
166 * ranges, separated by commas, e.g.: "200-210,x,#-178,-" | |
167 */ | |
168 for (i = global ? 0 : 3; i <= 3; ++i) | |
169 { | |
170 if (i == 0) | |
171 p = p_isi; /* first round: 'isident' */ | |
172 else if (i == 1) | |
173 p = p_isp; /* second round: 'isprint' */ | |
174 else if (i == 2) | |
175 p = p_isf; /* third round: 'isfname' */ | |
176 else /* i == 3 */ | |
177 p = buf->b_p_isk; /* fourth round: 'iskeyword' */ | |
178 | |
179 while (*p) | |
180 { | |
181 tilde = FALSE; | |
182 do_isalpha = FALSE; | |
183 if (*p == '^' && p[1] != NUL) | |
184 { | |
185 tilde = TRUE; | |
186 ++p; | |
187 } | |
188 if (VIM_ISDIGIT(*p)) | |
189 c = getdigits(&p); | |
190 else | |
1955 | 191 #ifdef FEAT_MBYTE |
192 if (has_mbyte) | |
193 c = mb_ptr2char_adv(&p); | |
194 else | |
195 #endif | |
7 | 196 c = *p++; |
197 c2 = -1; | |
198 if (*p == '-' && p[1] != NUL) | |
199 { | |
200 ++p; | |
201 if (VIM_ISDIGIT(*p)) | |
202 c2 = getdigits(&p); | |
203 else | |
1979 | 204 #ifdef FEAT_MBYTE |
205 if (has_mbyte) | |
206 c2 = mb_ptr2char_adv(&p); | |
207 else | |
208 #endif | |
7 | 209 c2 = *p++; |
210 } | |
1979 | 211 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
7 | 212 || !(*p == NUL || *p == ',')) |
213 return FAIL; | |
214 | |
215 if (c2 == -1) /* not a range */ | |
216 { | |
217 /* | |
218 * A single '@' (not "@-@"): | |
219 * Decide on letters being ID/printable/keyword chars with | |
220 * standard function isalpha(). This takes care of locale for | |
221 * single-byte characters). | |
222 */ | |
223 if (c == '@') | |
224 { | |
225 do_isalpha = TRUE; | |
226 c = 1; | |
227 c2 = 255; | |
228 } | |
229 else | |
230 c2 = c; | |
231 } | |
232 while (c <= c2) | |
233 { | |
1365 | 234 /* Use the MB_ functions here, because isalpha() doesn't |
235 * work properly when 'encoding' is "latin1" and the locale is | |
236 * "C". */ | |
237 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c) | |
7 | 238 #ifdef FEAT_FKMAP |
239 || (p_altkeymap && (F_isalpha(c) || F_isdigit(c))) | |
240 #endif | |
241 ) | |
242 { | |
243 if (i == 0) /* (re)set ID flag */ | |
244 { | |
245 if (tilde) | |
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246 g_chartab[c] &= ~CT_ID_CHAR; |
7 | 247 else |
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commit https://github.com/vim/vim/commit/88e8f9f14434a7cd538d0c159dc432bea869a5bd
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248 g_chartab[c] |= CT_ID_CHAR; |
7 | 249 } |
250 else if (i == 1) /* (re)set printable */ | |
251 { | |
252 if ((c < ' ' | |
253 #ifndef EBCDIC | |
254 || c > '~' | |
255 #endif | |
256 #ifdef FEAT_FKMAP | |
257 || (p_altkeymap | |
258 && (F_isalpha(c) || F_isdigit(c))) | |
259 #endif | |
260 ) | |
261 #ifdef FEAT_MBYTE | |
262 /* For double-byte we keep the cell width, so | |
263 * that we can detect it from the first byte. */ | |
264 && !(enc_dbcs && MB_BYTE2LEN(c) == 2) | |
265 #endif | |
266 ) | |
267 { | |
268 if (tilde) | |
269 { | |
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270 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) |
7 | 271 + ((dy_flags & DY_UHEX) ? 4 : 2); |
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272 g_chartab[c] &= ~CT_PRINT_CHAR; |
7 | 273 } |
274 else | |
275 { | |
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276 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) + 1; |
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277 g_chartab[c] |= CT_PRINT_CHAR; |
7 | 278 } |
279 } | |
280 } | |
281 else if (i == 2) /* (re)set fname flag */ | |
282 { | |
283 if (tilde) | |
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284 g_chartab[c] &= ~CT_FNAME_CHAR; |
7 | 285 else |
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commit https://github.com/vim/vim/commit/88e8f9f14434a7cd538d0c159dc432bea869a5bd
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286 g_chartab[c] |= CT_FNAME_CHAR; |
7 | 287 } |
288 else /* i == 3 */ /* (re)set keyword flag */ | |
289 { | |
290 if (tilde) | |
291 RESET_CHARTAB(buf, c); | |
292 else | |
293 SET_CHARTAB(buf, c); | |
294 } | |
295 } | |
296 ++c; | |
297 } | |
4096 | 298 |
299 c = *p; | |
7 | 300 p = skip_to_option_part(p); |
4096 | 301 if (c == ',' && *p == NUL) |
302 /* Trailing comma is not allowed. */ | |
303 return FAIL; | |
7 | 304 } |
305 } | |
306 chartab_initialized = TRUE; | |
307 return OK; | |
308 } | |
309 | |
310 /* | |
311 * Translate any special characters in buf[bufsize] in-place. | |
312 * The result is a string with only printable characters, but if there is not | |
313 * enough room, not all characters will be translated. | |
314 */ | |
315 void | |
316 trans_characters(buf, bufsize) | |
317 char_u *buf; | |
318 int bufsize; | |
319 { | |
320 int len; /* length of string needing translation */ | |
321 int room; /* room in buffer after string */ | |
322 char_u *trs; /* translated character */ | |
323 int trs_len; /* length of trs[] */ | |
324 | |
325 len = (int)STRLEN(buf); | |
326 room = bufsize - len; | |
327 while (*buf != 0) | |
328 { | |
329 # ifdef FEAT_MBYTE | |
330 /* Assume a multi-byte character doesn't need translation. */ | |
474 | 331 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
7 | 332 len -= trs_len; |
333 else | |
334 # endif | |
335 { | |
336 trs = transchar_byte(*buf); | |
337 trs_len = (int)STRLEN(trs); | |
338 if (trs_len > 1) | |
339 { | |
340 room -= trs_len - 1; | |
341 if (room <= 0) | |
342 return; | |
343 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
344 } | |
345 mch_memmove(buf, trs, (size_t)trs_len); | |
346 --len; | |
347 } | |
348 buf += trs_len; | |
349 } | |
350 } | |
351 | |
1097 | 352 #if defined(FEAT_EVAL) || defined(FEAT_TITLE) || defined(FEAT_INS_EXPAND) \ |
353 || defined(PROTO) | |
7 | 354 /* |
355 * Translate a string into allocated memory, replacing special chars with | |
356 * printable chars. Returns NULL when out of memory. | |
357 */ | |
358 char_u * | |
359 transstr(s) | |
360 char_u *s; | |
361 { | |
362 char_u *res; | |
363 char_u *p; | |
364 #ifdef FEAT_MBYTE | |
365 int l, len, c; | |
366 char_u hexbuf[11]; | |
367 #endif | |
368 | |
369 #ifdef FEAT_MBYTE | |
370 if (has_mbyte) | |
371 { | |
372 /* Compute the length of the result, taking account of unprintable | |
373 * multi-byte characters. */ | |
374 len = 0; | |
375 p = s; | |
376 while (*p != NUL) | |
377 { | |
474 | 378 if ((l = (*mb_ptr2len)(p)) > 1) |
7 | 379 { |
380 c = (*mb_ptr2char)(p); | |
381 p += l; | |
382 if (vim_isprintc(c)) | |
383 len += l; | |
384 else | |
385 { | |
386 transchar_hex(hexbuf, c); | |
835 | 387 len += (int)STRLEN(hexbuf); |
7 | 388 } |
389 } | |
390 else | |
391 { | |
392 l = byte2cells(*p++); | |
393 if (l > 0) | |
394 len += l; | |
395 else | |
396 len += 4; /* illegal byte sequence */ | |
397 } | |
398 } | |
399 res = alloc((unsigned)(len + 1)); | |
400 } | |
401 else | |
402 #endif | |
403 res = alloc((unsigned)(vim_strsize(s) + 1)); | |
404 if (res != NULL) | |
405 { | |
406 *res = NUL; | |
407 p = s; | |
408 while (*p != NUL) | |
409 { | |
410 #ifdef FEAT_MBYTE | |
474 | 411 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
7 | 412 { |
413 c = (*mb_ptr2char)(p); | |
414 if (vim_isprintc(c)) | |
415 STRNCAT(res, p, l); /* append printable multi-byte char */ | |
416 else | |
417 transchar_hex(res + STRLEN(res), c); | |
418 p += l; | |
419 } | |
420 else | |
421 #endif | |
422 STRCAT(res, transchar_byte(*p++)); | |
423 } | |
424 } | |
425 return res; | |
426 } | |
427 #endif | |
428 | |
429 #if defined(FEAT_SYN_HL) || defined(FEAT_INS_EXPAND) || defined(PROTO) | |
430 /* | |
221 | 431 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
432 * current locale. | |
130 | 433 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
434 * Otherwise puts the result in "buf[buflen]". | |
7 | 435 */ |
436 char_u * | |
130 | 437 str_foldcase(str, orglen, buf, buflen) |
7 | 438 char_u *str; |
130 | 439 int orglen; |
440 char_u *buf; | |
441 int buflen; | |
7 | 442 { |
443 garray_T ga; | |
444 int i; | |
130 | 445 int len = orglen; |
7 | 446 |
447 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
448 #define GA_PTR(i) ((char_u *)ga.ga_data + i) | |
130 | 449 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
450 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + i) | |
7 | 451 |
130 | 452 /* Copy "str" into "buf" or allocated memory, unmodified. */ |
453 if (buf == NULL) | |
454 { | |
455 ga_init2(&ga, 1, 10); | |
456 if (ga_grow(&ga, len + 1) == FAIL) | |
457 return NULL; | |
458 mch_memmove(ga.ga_data, str, (size_t)len); | |
459 ga.ga_len = len; | |
460 } | |
461 else | |
462 { | |
463 if (len >= buflen) /* Ugly! */ | |
464 len = buflen - 1; | |
465 mch_memmove(buf, str, (size_t)len); | |
466 } | |
467 if (buf == NULL) | |
468 GA_CHAR(len) = NUL; | |
469 else | |
470 buf[len] = NUL; | |
7 | 471 |
472 /* Make each character lower case. */ | |
473 i = 0; | |
130 | 474 while (STR_CHAR(i) != NUL) |
7 | 475 { |
476 #ifdef FEAT_MBYTE | |
130 | 477 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
7 | 478 { |
479 if (enc_utf8) | |
480 { | |
1654 | 481 int c = utf_ptr2char(STR_PTR(i)); |
3263 | 482 int olen = utf_ptr2len(STR_PTR(i)); |
1654 | 483 int lc = utf_tolower(c); |
7 | 484 |
1654 | 485 /* Only replace the character when it is not an invalid |
486 * sequence (ASCII character or more than one byte) and | |
487 * utf_tolower() doesn't return the original character. */ | |
3263 | 488 if ((c < 0x80 || olen > 1) && c != lc) |
7 | 489 { |
3263 | 490 int nlen = utf_char2len(lc); |
7 | 491 |
492 /* If the byte length changes need to shift the following | |
493 * characters forward or backward. */ | |
3263 | 494 if (olen != nlen) |
7 | 495 { |
3263 | 496 if (nlen > olen) |
130 | 497 { |
3263 | 498 if (buf == NULL |
499 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
500 : len + nlen - olen >= buflen) | |
7 | 501 { |
502 /* out of memory, keep old char */ | |
503 lc = c; | |
3263 | 504 nlen = olen; |
7 | 505 } |
130 | 506 } |
3263 | 507 if (olen != nlen) |
7 | 508 { |
130 | 509 if (buf == NULL) |
510 { | |
3263 | 511 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
512 ga.ga_len += nlen - olen; | |
130 | 513 } |
514 else | |
515 { | |
3263 | 516 STRMOVE(buf + i + nlen, buf + i + olen); |
517 len += nlen - olen; | |
130 | 518 } |
7 | 519 } |
520 } | |
130 | 521 (void)utf_char2bytes(lc, STR_PTR(i)); |
7 | 522 } |
523 } | |
524 /* skip to next multi-byte char */ | |
474 | 525 i += (*mb_ptr2len)(STR_PTR(i)); |
7 | 526 } |
527 else | |
528 #endif | |
529 { | |
130 | 530 if (buf == NULL) |
531 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
532 else | |
533 buf[i] = TOLOWER_LOC(buf[i]); | |
7 | 534 ++i; |
535 } | |
536 } | |
537 | |
130 | 538 if (buf == NULL) |
539 return (char_u *)ga.ga_data; | |
540 return buf; | |
7 | 541 } |
542 #endif | |
543 | |
544 /* | |
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545 * Catch 22: g_chartab[] can't be initialized before the options are |
7 | 546 * initialized, and initializing options may cause transchar() to be called! |
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547 * When chartab_initialized == FALSE don't use g_chartab[]. |
7 | 548 * Does NOT work for multi-byte characters, c must be <= 255. |
549 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
550 * character! | |
551 */ | |
552 static char_u transchar_buf[7]; | |
553 | |
554 char_u * | |
555 transchar(c) | |
556 int c; | |
557 { | |
558 int i; | |
559 | |
560 i = 0; | |
561 if (IS_SPECIAL(c)) /* special key code, display as ~@ char */ | |
562 { | |
563 transchar_buf[0] = '~'; | |
564 transchar_buf[1] = '@'; | |
565 i = 2; | |
566 c = K_SECOND(c); | |
567 } | |
568 | |
569 if ((!chartab_initialized && ( | |
570 #ifdef EBCDIC | |
571 (c >= 64 && c < 255) | |
572 #else | |
573 (c >= ' ' && c <= '~') | |
574 #endif | |
575 #ifdef FEAT_FKMAP | |
576 || F_ischar(c) | |
577 #endif | |
578 )) || (c < 256 && vim_isprintc_strict(c))) | |
579 { | |
580 /* printable character */ | |
581 transchar_buf[i] = c; | |
582 transchar_buf[i + 1] = NUL; | |
583 } | |
584 else | |
585 transchar_nonprint(transchar_buf + i, c); | |
586 return transchar_buf; | |
587 } | |
588 | |
589 #if defined(FEAT_MBYTE) || defined(PROTO) | |
590 /* | |
591 * Like transchar(), but called with a byte instead of a character. Checks | |
592 * for an illegal UTF-8 byte. | |
593 */ | |
594 char_u * | |
595 transchar_byte(c) | |
596 int c; | |
597 { | |
598 if (enc_utf8 && c >= 0x80) | |
599 { | |
600 transchar_nonprint(transchar_buf, c); | |
601 return transchar_buf; | |
602 } | |
603 return transchar(c); | |
604 } | |
605 #endif | |
606 | |
607 /* | |
608 * Convert non-printable character to two or more printable characters in | |
609 * "buf[]". "buf" needs to be able to hold five bytes. | |
610 * Does NOT work for multi-byte characters, c must be <= 255. | |
611 */ | |
612 void | |
613 transchar_nonprint(buf, c) | |
614 char_u *buf; | |
615 int c; | |
616 { | |
617 if (c == NL) | |
618 c = NUL; /* we use newline in place of a NUL */ | |
619 else if (c == CAR && get_fileformat(curbuf) == EOL_MAC) | |
620 c = NL; /* we use CR in place of NL in this case */ | |
621 | |
622 if (dy_flags & DY_UHEX) /* 'display' has "uhex" */ | |
623 transchar_hex(buf, c); | |
624 | |
625 #ifdef EBCDIC | |
626 /* For EBCDIC only the characters 0-63 and 255 are not printable */ | |
627 else if (CtrlChar(c) != 0 || c == DEL) | |
628 #else | |
629 else if (c <= 0x7f) /* 0x00 - 0x1f and 0x7f */ | |
630 #endif | |
631 { | |
632 buf[0] = '^'; | |
633 #ifdef EBCDIC | |
634 if (c == DEL) | |
635 buf[1] = '?'; /* DEL displayed as ^? */ | |
636 else | |
637 buf[1] = CtrlChar(c); | |
638 #else | |
639 buf[1] = c ^ 0x40; /* DEL displayed as ^? */ | |
640 #endif | |
641 | |
642 buf[2] = NUL; | |
643 } | |
644 #ifdef FEAT_MBYTE | |
645 else if (enc_utf8 && c >= 0x80) | |
646 { | |
647 transchar_hex(buf, c); | |
648 } | |
649 #endif | |
650 #ifndef EBCDIC | |
651 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) /* 0xa0 - 0xfe */ | |
652 { | |
653 buf[0] = '|'; | |
654 buf[1] = c - 0x80; | |
655 buf[2] = NUL; | |
656 } | |
657 #else | |
658 else if (c < 64) | |
659 { | |
660 buf[0] = '~'; | |
661 buf[1] = MetaChar(c); | |
662 buf[2] = NUL; | |
663 } | |
664 #endif | |
665 else /* 0x80 - 0x9f and 0xff */ | |
666 { | |
667 /* | |
668 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
669 * them as '~?' for now | |
670 */ | |
671 buf[0] = '~'; | |
672 #ifdef EBCDIC | |
673 buf[1] = '?'; /* 0xff displayed as ~? */ | |
674 #else | |
675 buf[1] = (c - 0x80) ^ 0x40; /* 0xff displayed as ~? */ | |
676 #endif | |
677 buf[2] = NUL; | |
678 } | |
679 } | |
680 | |
681 void | |
682 transchar_hex(buf, c) | |
683 char_u *buf; | |
684 int c; | |
685 { | |
686 int i = 0; | |
687 | |
688 buf[0] = '<'; | |
689 #ifdef FEAT_MBYTE | |
690 if (c > 255) | |
691 { | |
692 buf[++i] = nr2hex((unsigned)c >> 12); | |
693 buf[++i] = nr2hex((unsigned)c >> 8); | |
694 } | |
695 #endif | |
696 buf[++i] = nr2hex((unsigned)c >> 4); | |
1869 | 697 buf[++i] = nr2hex((unsigned)c); |
7 | 698 buf[++i] = '>'; |
699 buf[++i] = NUL; | |
700 } | |
701 | |
702 /* | |
703 * Convert the lower 4 bits of byte "c" to its hex character. | |
704 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
705 * function key 1. | |
706 */ | |
1869 | 707 static unsigned |
7 | 708 nr2hex(c) |
1869 | 709 unsigned c; |
7 | 710 { |
711 if ((c & 0xf) <= 9) | |
712 return (c & 0xf) + '0'; | |
713 return (c & 0xf) - 10 + 'a'; | |
714 } | |
715 | |
716 /* | |
717 * Return number of display cells occupied by byte "b". | |
718 * Caller must make sure 0 <= b <= 255. | |
719 * For multi-byte mode "b" must be the first byte of a character. | |
720 * A TAB is counted as two cells: "^I". | |
721 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
722 * cells depends on further bytes. | |
723 */ | |
724 int | |
725 byte2cells(b) | |
726 int b; | |
727 { | |
728 #ifdef FEAT_MBYTE | |
729 if (enc_utf8 && b >= 0x80) | |
730 return 0; | |
731 #endif | |
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diff
changeset
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732 return (g_chartab[b] & CT_CELL_MASK); |
7 | 733 } |
734 | |
735 /* | |
736 * Return number of display cells occupied by character "c". | |
737 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
738 * A TAB is counted as two cells: "^I" or four: "<09>". | |
739 */ | |
740 int | |
741 char2cells(c) | |
742 int c; | |
743 { | |
744 if (IS_SPECIAL(c)) | |
745 return char2cells(K_SECOND(c)) + 2; | |
746 #ifdef FEAT_MBYTE | |
747 if (c >= 0x80) | |
748 { | |
749 /* UTF-8: above 0x80 need to check the value */ | |
750 if (enc_utf8) | |
751 return utf_char2cells(c); | |
752 /* DBCS: double-byte means double-width, except for euc-jp with first | |
753 * byte 0x8e */ | |
754 if (enc_dbcs != 0 && c >= 0x100) | |
755 { | |
756 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
757 return 1; | |
758 return 2; | |
759 } | |
760 } | |
761 #endif | |
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changeset
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762 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
7 | 763 } |
764 | |
765 /* | |
766 * Return number of display cells occupied by character at "*p". | |
767 * A TAB is counted as two cells: "^I" or four: "<09>". | |
768 */ | |
769 int | |
770 ptr2cells(p) | |
771 char_u *p; | |
772 { | |
773 #ifdef FEAT_MBYTE | |
774 /* For UTF-8 we need to look at more bytes if the first byte is >= 0x80. */ | |
775 if (enc_utf8 && *p >= 0x80) | |
776 return utf_ptr2cells(p); | |
777 /* For DBCS we can tell the cell count from the first byte. */ | |
778 #endif | |
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779 return (g_chartab[*p] & CT_CELL_MASK); |
7 | 780 } |
781 | |
782 /* | |
3292 | 783 * Return the number of character cells string "s" will take on the screen, |
7 | 784 * counting TABs as two characters: "^I". |
785 */ | |
786 int | |
787 vim_strsize(s) | |
788 char_u *s; | |
789 { | |
790 return vim_strnsize(s, (int)MAXCOL); | |
791 } | |
792 | |
793 /* | |
3292 | 794 * Return the number of character cells string "s[len]" will take on the |
795 * screen, counting TABs as two characters: "^I". | |
7 | 796 */ |
797 int | |
798 vim_strnsize(s, len) | |
799 char_u *s; | |
800 int len; | |
801 { | |
802 int size = 0; | |
803 | |
804 while (*s != NUL && --len >= 0) | |
805 { | |
806 #ifdef FEAT_MBYTE | |
807 if (has_mbyte) | |
808 { | |
474 | 809 int l = (*mb_ptr2len)(s); |
7 | 810 |
811 size += ptr2cells(s); | |
812 s += l; | |
813 len -= l - 1; | |
814 } | |
815 else | |
816 #endif | |
817 size += byte2cells(*s++); | |
818 } | |
819 return size; | |
820 } | |
821 | |
822 /* | |
823 * Return the number of characters 'c' will take on the screen, taking | |
824 * into account the size of a tab. | |
825 * Use a define to make it fast, this is used very often!!! | |
826 * Also see getvcol() below. | |
827 */ | |
828 | |
829 #define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ | |
830 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ | |
831 { \ | |
832 int ts; \ | |
833 ts = (buf)->b_p_ts; \ | |
834 return (int)(ts - (col % ts)); \ | |
835 } \ | |
836 else \ | |
837 return ptr2cells(p); | |
838 | |
839 #if defined(FEAT_VREPLACE) || defined(FEAT_EX_EXTRA) || defined(FEAT_GUI) \ | |
840 || defined(FEAT_VIRTUALEDIT) || defined(PROTO) | |
841 int | |
842 chartabsize(p, col) | |
843 char_u *p; | |
844 colnr_T col; | |
845 { | |
846 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
847 } | |
848 #endif | |
849 | |
850 #ifdef FEAT_LINEBREAK | |
851 static int | |
852 win_chartabsize(wp, p, col) | |
853 win_T *wp; | |
854 char_u *p; | |
855 colnr_T col; | |
856 { | |
857 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
858 } | |
859 #endif | |
860 | |
861 /* | |
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862 * Return the number of characters the string 's' will take on the screen, |
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863 * taking into account the size of a tab. |
7 | 864 */ |
865 int | |
866 linetabsize(s) | |
867 char_u *s; | |
868 { | |
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869 return linetabsize_col(0, s); |
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870 } |
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871 |
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872 /* |
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873 * Like linetabsize(), but starting at column "startcol". |
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874 */ |
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875 int |
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876 linetabsize_col(startcol, s) |
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877 int startcol; |
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878 char_u *s; |
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879 { |
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880 colnr_T col = startcol; |
5995 | 881 char_u *line = s; /* pointer to start of line, for breakindent */ |
7 | 882 |
883 while (*s != NUL) | |
5995 | 884 col += lbr_chartabsize_adv(line, &s, col); |
7 | 885 return (int)col; |
886 } | |
887 | |
888 /* | |
889 * Like linetabsize(), but for a given window instead of the current one. | |
890 */ | |
891 int | |
5995 | 892 win_linetabsize(wp, line, len) |
7 | 893 win_T *wp; |
5995 | 894 char_u *line; |
7 | 895 colnr_T len; |
896 { | |
897 colnr_T col = 0; | |
898 char_u *s; | |
899 | |
5995 | 900 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
901 mb_ptr_adv(s)) | |
902 col += win_lbr_chartabsize(wp, line, s, col, NULL); | |
7 | 903 return (int)col; |
904 } | |
905 | |
906 /* | |
42 | 907 * Return TRUE if 'c' is a normal identifier character: |
908 * Letters and characters from the 'isident' option. | |
7 | 909 */ |
910 int | |
911 vim_isIDc(c) | |
912 int c; | |
913 { | |
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diff
changeset
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914 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
7 | 915 } |
916 | |
917 /* | |
918 * return TRUE if 'c' is a keyword character: Letters and characters from | |
919 * 'iskeyword' option for current buffer. | |
920 * For multi-byte characters mb_get_class() is used (builtin rules). | |
921 */ | |
922 int | |
923 vim_iswordc(c) | |
924 int c; | |
925 { | |
4043 | 926 return vim_iswordc_buf(c, curbuf); |
927 } | |
928 | |
929 int | |
930 vim_iswordc_buf(c, buf) | |
931 int c; | |
932 buf_T *buf; | |
933 { | |
7 | 934 #ifdef FEAT_MBYTE |
935 if (c >= 0x100) | |
936 { | |
937 if (enc_dbcs != 0) | |
1869 | 938 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
7 | 939 if (enc_utf8) |
940 return utf_class(c) >= 2; | |
941 } | |
942 #endif | |
4043 | 943 return (c > 0 && c < 0x100 && GET_CHARTAB(buf, c) != 0); |
7 | 944 } |
945 | |
946 /* | |
947 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
948 */ | |
949 int | |
950 vim_iswordp(p) | |
951 char_u *p; | |
952 { | |
953 #ifdef FEAT_MBYTE | |
954 if (has_mbyte && MB_BYTE2LEN(*p) > 1) | |
955 return mb_get_class(p) >= 2; | |
956 #endif | |
957 return GET_CHARTAB(curbuf, *p) != 0; | |
958 } | |
959 | |
960 int | |
4043 | 961 vim_iswordp_buf(p, buf) |
7 | 962 char_u *p; |
963 buf_T *buf; | |
964 { | |
4080 | 965 #ifdef FEAT_MBYTE |
7 | 966 if (has_mbyte && MB_BYTE2LEN(*p) > 1) |
967 return mb_get_class(p) >= 2; | |
4080 | 968 #endif |
7 | 969 return (GET_CHARTAB(buf, *p) != 0); |
970 } | |
971 | |
972 /* | |
973 * return TRUE if 'c' is a valid file-name character | |
974 * Assume characters above 0x100 are valid (multi-byte). | |
975 */ | |
976 int | |
977 vim_isfilec(c) | |
978 int c; | |
979 { | |
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980 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
7 | 981 } |
982 | |
983 /* | |
1369 | 984 * return TRUE if 'c' is a valid file-name character or a wildcard character |
985 * Assume characters above 0x100 are valid (multi-byte). | |
986 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
987 * returns false. | |
988 */ | |
989 int | |
990 vim_isfilec_or_wc(c) | |
991 int c; | |
992 { | |
993 char_u buf[2]; | |
994 | |
995 buf[0] = (char_u)c; | |
996 buf[1] = NUL; | |
997 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
998 } | |
999 | |
1000 /* | |
7 | 1001 * return TRUE if 'c' is a printable character |
1002 * Assume characters above 0x100 are printable (multi-byte), except for | |
1003 * Unicode. | |
1004 */ | |
1005 int | |
1006 vim_isprintc(c) | |
1007 int c; | |
1008 { | |
1009 #ifdef FEAT_MBYTE | |
1010 if (enc_utf8 && c >= 0x100) | |
1011 return utf_printable(c); | |
1012 #endif | |
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1013 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 1014 } |
1015 | |
1016 /* | |
1017 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
1018 * byte of a double-byte character. | |
1019 */ | |
1020 int | |
1021 vim_isprintc_strict(c) | |
1022 int c; | |
1023 { | |
1024 #ifdef FEAT_MBYTE | |
1025 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
1026 return FALSE; | |
1027 if (enc_utf8 && c >= 0x100) | |
1028 return utf_printable(c); | |
1029 #endif | |
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|
1030 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 1031 } |
1032 | |
1033 /* | |
1034 * like chartabsize(), but also check for line breaks on the screen | |
1035 */ | |
1036 int | |
5995 | 1037 lbr_chartabsize(line, s, col) |
6068 | 1038 char_u *line UNUSED; /* start of the line */ |
7 | 1039 unsigned char *s; |
1040 colnr_T col; | |
1041 { | |
1042 #ifdef FEAT_LINEBREAK | |
5995 | 1043 if (!curwin->w_p_lbr && *p_sbr == NUL && !curwin->w_p_bri) |
7 | 1044 { |
1045 #endif | |
1046 #ifdef FEAT_MBYTE | |
1047 if (curwin->w_p_wrap) | |
1048 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
1049 #endif | |
1050 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
1051 #ifdef FEAT_LINEBREAK | |
1052 } | |
5995 | 1053 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
7 | 1054 #endif |
1055 } | |
1056 | |
1057 /* | |
1058 * Call lbr_chartabsize() and advance the pointer. | |
1059 */ | |
1060 int | |
5995 | 1061 lbr_chartabsize_adv(line, s, col) |
1062 char_u *line; /* start of the line */ | |
7 | 1063 char_u **s; |
1064 colnr_T col; | |
1065 { | |
1066 int retval; | |
1067 | |
5995 | 1068 retval = lbr_chartabsize(line, *s, col); |
39 | 1069 mb_ptr_adv(*s); |
7 | 1070 return retval; |
1071 } | |
1072 | |
1073 /* | |
1074 * This function is used very often, keep it fast!!!! | |
1075 * | |
1076 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
1077 * string at start of line. Warning: *headp is only set if it's a non-zero | |
1078 * value, init to 0 before calling. | |
1079 */ | |
1080 int | |
5995 | 1081 win_lbr_chartabsize(wp, line, s, col, headp) |
7 | 1082 win_T *wp; |
6068 | 1083 char_u *line UNUSED; /* start of the line */ |
7 | 1084 char_u *s; |
1085 colnr_T col; | |
1876 | 1086 int *headp UNUSED; |
7 | 1087 { |
1088 #ifdef FEAT_LINEBREAK | |
1089 int c; | |
1090 int size; | |
1091 colnr_T col2; | |
6024 | 1092 colnr_T col_adj = 0; /* col + screen size of tab */ |
7 | 1093 colnr_T colmax; |
1094 int added; | |
1095 # ifdef FEAT_MBYTE | |
1096 int mb_added = 0; | |
1097 # else | |
1098 # define mb_added 0 | |
1099 # endif | |
1100 int numberextra; | |
1101 char_u *ps; | |
1102 int tab_corr = (*s == TAB); | |
236 | 1103 int n; |
7 | 1104 |
1105 /* | |
5995 | 1106 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
7 | 1107 */ |
5995 | 1108 if (!wp->w_p_lbr && !wp->w_p_bri && *p_sbr == NUL) |
7 | 1109 #endif |
1110 { | |
1111 #ifdef FEAT_MBYTE | |
1112 if (wp->w_p_wrap) | |
1113 return win_nolbr_chartabsize(wp, s, col, headp); | |
1114 #endif | |
1115 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
1116 } | |
1117 | |
1118 #ifdef FEAT_LINEBREAK | |
1119 /* | |
1120 * First get normal size, without 'linebreak' | |
1121 */ | |
1122 size = win_chartabsize(wp, s, col); | |
1123 c = *s; | |
6024 | 1124 if (tab_corr) |
1125 col_adj = size - 1; | |
7 | 1126 |
1127 /* | |
1128 * If 'linebreak' set check at a blank before a non-blank if the line | |
1129 * needs a break here | |
1130 */ | |
1131 if (wp->w_p_lbr | |
1132 && vim_isbreak(c) | |
1133 && !vim_isbreak(s[1]) | |
1134 && wp->w_p_wrap | |
1135 # ifdef FEAT_VERTSPLIT | |
1136 && wp->w_width != 0 | |
1137 # endif | |
1138 ) | |
1139 { | |
1140 /* | |
1141 * Count all characters from first non-blank after a blank up to next | |
1142 * non-blank after a blank. | |
1143 */ | |
1144 numberextra = win_col_off(wp); | |
1145 col2 = col; | |
6024 | 1146 colmax = (colnr_T)(W_WIDTH(wp) - numberextra - col_adj); |
7 | 1147 if (col >= colmax) |
236 | 1148 { |
6024 | 1149 colmax += col_adj; |
1150 n = colmax + win_col_off2(wp); | |
236 | 1151 if (n > 0) |
6024 | 1152 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
236 | 1153 } |
1154 | |
7 | 1155 for (;;) |
1156 { | |
1157 ps = s; | |
39 | 1158 mb_ptr_adv(s); |
7 | 1159 c = *s; |
1160 if (!(c != NUL | |
1161 && (vim_isbreak(c) | |
1162 || (!vim_isbreak(c) | |
1163 && (col2 == col || !vim_isbreak(*ps)))))) | |
1164 break; | |
1165 | |
1166 col2 += win_chartabsize(wp, s, col2); | |
1167 if (col2 >= colmax) /* doesn't fit */ | |
1168 { | |
6024 | 1169 size = colmax - col + col_adj; |
7 | 1170 tab_corr = FALSE; |
1171 break; | |
1172 } | |
1173 } | |
1174 } | |
1175 # ifdef FEAT_MBYTE | |
1176 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
1177 && wp->w_p_wrap && in_win_border(wp, col)) | |
1178 { | |
1179 ++size; /* Count the ">" in the last column. */ | |
1180 mb_added = 1; | |
1181 } | |
1182 # endif | |
1183 | |
1184 /* | |
5995 | 1185 * May have to add something for 'breakindent' and/or 'showbreak' |
1186 * string at start of line. | |
7 | 1187 * Set *headp to the size of what we add. |
1188 */ | |
1189 added = 0; | |
5995 | 1190 if ((*p_sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
7 | 1191 { |
6503 | 1192 colnr_T sbrlen = 0; |
1193 int numberwidth = win_col_off(wp); | |
1194 | |
1195 numberextra = numberwidth; | |
7 | 1196 col += numberextra + mb_added; |
1197 if (col >= (colnr_T)W_WIDTH(wp)) | |
1198 { | |
1199 col -= W_WIDTH(wp); | |
1200 numberextra = W_WIDTH(wp) - (numberextra - win_col_off2(wp)); | |
6503 | 1201 if (col >= numberextra && numberextra > 0) |
6312 | 1202 col %= numberextra; |
6288 | 1203 if (*p_sbr != NUL) |
1204 { | |
6503 | 1205 sbrlen = (colnr_T)MB_CHARLEN(p_sbr); |
6288 | 1206 if (col >= sbrlen) |
1207 col -= sbrlen; | |
1208 } | |
6503 | 1209 if (col >= numberextra && numberextra > 0) |
7 | 1210 col = col % numberextra; |
6503 | 1211 else if (col > 0 && numberextra > 0) |
1212 col += numberwidth - win_col_off2(wp); | |
1213 | |
1214 numberwidth -= win_col_off2(wp); | |
7 | 1215 } |
6503 | 1216 if (col == 0 || col + size + sbrlen > (colnr_T)W_WIDTH(wp)) |
7 | 1217 { |
5995 | 1218 added = 0; |
1219 if (*p_sbr != NUL) | |
6503 | 1220 { |
1221 if (size + sbrlen + numberwidth > (colnr_T)W_WIDTH(wp)) | |
1222 { | |
1223 /* calculate effective window width */ | |
1224 int width = (colnr_T)W_WIDTH(wp) - sbrlen - numberwidth; | |
1225 int prev_width = col ? ((colnr_T)W_WIDTH(wp) - (sbrlen + col)) : 0; | |
1226 if (width == 0) | |
1227 width = (colnr_T)W_WIDTH(wp); | |
1228 added += ((size - prev_width) / width) * vim_strsize(p_sbr); | |
1229 if ((size - prev_width) % width) | |
1230 /* wrapped, add another length of 'sbr' */ | |
1231 added += vim_strsize(p_sbr); | |
1232 } | |
1233 else | |
1234 added += vim_strsize(p_sbr); | |
1235 } | |
5995 | 1236 if (wp->w_p_bri) |
1237 added += get_breakindent_win(wp, line); | |
1238 | |
6160 | 1239 size += added; |
7 | 1240 if (col != 0) |
1241 added = 0; | |
1242 } | |
1243 } | |
1244 if (headp != NULL) | |
1245 *headp = added + mb_added; | |
1246 return size; | |
1247 #endif | |
1248 } | |
1249 | |
1250 #if defined(FEAT_MBYTE) || defined(PROTO) | |
1251 /* | |
1252 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
1253 * 'wrap' is on. This means we need to check for a double-byte character that | |
1254 * doesn't fit at the end of the screen line. | |
1255 */ | |
1256 static int | |
1257 win_nolbr_chartabsize(wp, s, col, headp) | |
1258 win_T *wp; | |
1259 char_u *s; | |
1260 colnr_T col; | |
1261 int *headp; | |
1262 { | |
1263 int n; | |
1264 | |
1265 if (*s == TAB && (!wp->w_p_list || lcs_tab1)) | |
1266 { | |
1267 n = wp->w_buffer->b_p_ts; | |
1268 return (int)(n - (col % n)); | |
1269 } | |
1270 n = ptr2cells(s); | |
1271 /* Add one cell for a double-width character in the last column of the | |
1272 * window, displayed with a ">". */ | |
1273 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) | |
1274 { | |
1275 if (headp != NULL) | |
1276 *headp = 1; | |
1277 return 3; | |
1278 } | |
1279 return n; | |
1280 } | |
1281 | |
1282 /* | |
1283 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
1284 * "wp". | |
1285 */ | |
1286 int | |
1287 in_win_border(wp, vcol) | |
1288 win_T *wp; | |
1289 colnr_T vcol; | |
1290 { | |
1869 | 1291 int width1; /* width of first line (after line number) */ |
1292 int width2; /* width of further lines */ | |
7 | 1293 |
1294 #ifdef FEAT_VERTSPLIT | |
1295 if (wp->w_width == 0) /* there is no border */ | |
1296 return FALSE; | |
1297 #endif | |
1298 width1 = W_WIDTH(wp) - win_col_off(wp); | |
1869 | 1299 if ((int)vcol < width1 - 1) |
7 | 1300 return FALSE; |
1869 | 1301 if ((int)vcol == width1 - 1) |
7 | 1302 return TRUE; |
1303 width2 = width1 + win_col_off2(wp); | |
1970 | 1304 if (width2 <= 0) |
1305 return FALSE; | |
7 | 1306 return ((vcol - width1) % width2 == width2 - 1); |
1307 } | |
1308 #endif /* FEAT_MBYTE */ | |
1309 | |
1310 /* | |
1311 * Get virtual column number of pos. | |
1312 * start: on the first position of this character (TAB, ctrl) | |
1313 * cursor: where the cursor is on this character (first char, except for TAB) | |
1314 * end: on the last position of this character (TAB, ctrl) | |
1315 * | |
1316 * This is used very often, keep it fast! | |
1317 */ | |
1318 void | |
1319 getvcol(wp, pos, start, cursor, end) | |
1320 win_T *wp; | |
1321 pos_T *pos; | |
1322 colnr_T *start; | |
1323 colnr_T *cursor; | |
1324 colnr_T *end; | |
1325 { | |
1326 colnr_T vcol; | |
1327 char_u *ptr; /* points to current char */ | |
1328 char_u *posptr; /* points to char at pos->col */ | |
5995 | 1329 char_u *line; /* start of the line */ |
7 | 1330 int incr; |
1331 int head; | |
1332 int ts = wp->w_buffer->b_p_ts; | |
1333 int c; | |
1334 | |
1335 vcol = 0; | |
5995 | 1336 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
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1337 if (pos->col == MAXCOL) |
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1338 posptr = NULL; /* continue until the NUL */ |
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1339 else |
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1340 posptr = ptr + pos->col; |
7 | 1341 |
1342 /* | |
1343 * This function is used very often, do some speed optimizations. | |
5995 | 1344 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
1345 * use a simple loop. | |
7 | 1346 * Also use this when 'list' is set but tabs take their normal size. |
1347 */ | |
1348 if ((!wp->w_p_list || lcs_tab1 != NUL) | |
1349 #ifdef FEAT_LINEBREAK | |
5995 | 1350 && !wp->w_p_lbr && *p_sbr == NUL && !wp->w_p_bri |
7 | 1351 #endif |
1352 ) | |
1353 { | |
1354 #ifndef FEAT_MBYTE | |
1355 head = 0; | |
1356 #endif | |
1357 for (;;) | |
1358 { | |
1359 #ifdef FEAT_MBYTE | |
1360 head = 0; | |
1361 #endif | |
1362 c = *ptr; | |
1363 /* make sure we don't go past the end of the line */ | |
1364 if (c == NUL) | |
1365 { | |
1366 incr = 1; /* NUL at end of line only takes one column */ | |
1367 break; | |
1368 } | |
1369 /* A tab gets expanded, depending on the current column */ | |
1370 if (c == TAB) | |
1371 incr = ts - (vcol % ts); | |
1372 else | |
1373 { | |
1374 #ifdef FEAT_MBYTE | |
1375 if (has_mbyte) | |
1376 { | |
1377 /* For utf-8, if the byte is >= 0x80, need to look at | |
1378 * further bytes to find the cell width. */ | |
1379 if (enc_utf8 && c >= 0x80) | |
1380 incr = utf_ptr2cells(ptr); | |
1381 else | |
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1382 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1383 |
1384 /* If a double-cell char doesn't fit at the end of a line | |
1385 * it wraps to the next line, it's like this char is three | |
1386 * cells wide. */ | |
1546 | 1387 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
1388 && in_win_border(wp, vcol)) | |
7 | 1389 { |
1390 ++incr; | |
1391 head = 1; | |
1392 } | |
1393 } | |
1394 else | |
1395 #endif | |
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1396 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1397 } |
1398 | |
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1399 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
7 | 1400 break; |
1401 | |
1402 vcol += incr; | |
39 | 1403 mb_ptr_adv(ptr); |
7 | 1404 } |
1405 } | |
1406 else | |
1407 { | |
1408 for (;;) | |
1409 { | |
1410 /* A tab gets expanded, depending on the current column */ | |
1411 head = 0; | |
5995 | 1412 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
7 | 1413 /* make sure we don't go past the end of the line */ |
1414 if (*ptr == NUL) | |
1415 { | |
1416 incr = 1; /* NUL at end of line only takes one column */ | |
1417 break; | |
1418 } | |
1419 | |
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1420 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
7 | 1421 break; |
1422 | |
1423 vcol += incr; | |
39 | 1424 mb_ptr_adv(ptr); |
7 | 1425 } |
1426 } | |
1427 if (start != NULL) | |
1428 *start = vcol + head; | |
1429 if (end != NULL) | |
1430 *end = vcol + incr - 1; | |
1431 if (cursor != NULL) | |
1432 { | |
1433 if (*ptr == TAB | |
1434 && (State & NORMAL) | |
1435 && !wp->w_p_list | |
1436 && !virtual_active() | |
5735 | 1437 && !(VIsual_active && (*p_sel == 'e' || ltoreq(*pos, VIsual))) |
7 | 1438 ) |
1439 *cursor = vcol + incr - 1; /* cursor at end */ | |
1440 else | |
1441 *cursor = vcol + head; /* cursor at start */ | |
1442 } | |
1443 } | |
1444 | |
1445 /* | |
1446 * Get virtual cursor column in the current window, pretending 'list' is off. | |
1447 */ | |
1448 colnr_T | |
1449 getvcol_nolist(posp) | |
1450 pos_T *posp; | |
1451 { | |
1452 int list_save = curwin->w_p_list; | |
1453 colnr_T vcol; | |
1454 | |
1455 curwin->w_p_list = FALSE; | |
1456 getvcol(curwin, posp, NULL, &vcol, NULL); | |
1457 curwin->w_p_list = list_save; | |
1458 return vcol; | |
1459 } | |
1460 | |
1461 #if defined(FEAT_VIRTUALEDIT) || defined(PROTO) | |
1462 /* | |
1463 * Get virtual column in virtual mode. | |
1464 */ | |
1465 void | |
1466 getvvcol(wp, pos, start, cursor, end) | |
1467 win_T *wp; | |
1468 pos_T *pos; | |
1469 colnr_T *start; | |
1470 colnr_T *cursor; | |
1471 colnr_T *end; | |
1472 { | |
1473 colnr_T col; | |
1474 colnr_T coladd; | |
1475 colnr_T endadd; | |
1476 # ifdef FEAT_MBYTE | |
1477 char_u *ptr; | |
1478 # endif | |
1479 | |
1480 if (virtual_active()) | |
1481 { | |
1482 /* For virtual mode, only want one value */ | |
1483 getvcol(wp, pos, &col, NULL, NULL); | |
1484 | |
1485 coladd = pos->coladd; | |
1486 endadd = 0; | |
1487 # ifdef FEAT_MBYTE | |
1488 /* Cannot put the cursor on part of a wide character. */ | |
1489 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); | |
1869 | 1490 if (pos->col < (colnr_T)STRLEN(ptr)) |
7 | 1491 { |
1492 int c = (*mb_ptr2char)(ptr + pos->col); | |
1493 | |
1494 if (c != TAB && vim_isprintc(c)) | |
1495 { | |
1869 | 1496 endadd = (colnr_T)(char2cells(c) - 1); |
557 | 1497 if (coladd > endadd) /* past end of line */ |
1498 endadd = 0; | |
7 | 1499 else |
1500 coladd = 0; | |
1501 } | |
1502 } | |
1503 # endif | |
1504 col += coladd; | |
1505 if (start != NULL) | |
1506 *start = col; | |
1507 if (cursor != NULL) | |
1508 *cursor = col; | |
1509 if (end != NULL) | |
1510 *end = col + endadd; | |
1511 } | |
1512 else | |
1513 getvcol(wp, pos, start, cursor, end); | |
1514 } | |
1515 #endif | |
1516 | |
1517 /* | |
1518 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
1519 * Used for Visual block mode. | |
1520 */ | |
1521 void | |
1522 getvcols(wp, pos1, pos2, left, right) | |
1523 win_T *wp; | |
1524 pos_T *pos1, *pos2; | |
1525 colnr_T *left, *right; | |
1526 { | |
1527 colnr_T from1, from2, to1, to2; | |
1528 | |
1529 if (ltp(pos1, pos2)) | |
1530 { | |
1531 getvvcol(wp, pos1, &from1, NULL, &to1); | |
1532 getvvcol(wp, pos2, &from2, NULL, &to2); | |
1533 } | |
1534 else | |
1535 { | |
1536 getvvcol(wp, pos2, &from1, NULL, &to1); | |
1537 getvvcol(wp, pos1, &from2, NULL, &to2); | |
1538 } | |
1539 if (from2 < from1) | |
1540 *left = from2; | |
1541 else | |
1542 *left = from1; | |
1543 if (to2 > to1) | |
1544 { | |
1545 if (*p_sel == 'e' && from2 - 1 >= to1) | |
1546 *right = from2 - 1; | |
1547 else | |
1548 *right = to2; | |
1549 } | |
1550 else | |
1551 *right = to1; | |
1552 } | |
1553 | |
1554 /* | |
1555 * skipwhite: skip over ' ' and '\t'. | |
1556 */ | |
1557 char_u * | |
1687 | 1558 skipwhite(q) |
1559 char_u *q; | |
7 | 1560 { |
1687 | 1561 char_u *p = q; |
1562 | |
7 | 1563 while (vim_iswhite(*p)) /* skip to next non-white */ |
1564 ++p; | |
1565 return p; | |
1566 } | |
1567 | |
1568 /* | |
293 | 1569 * skip over digits |
7 | 1570 */ |
1571 char_u * | |
1687 | 1572 skipdigits(q) |
1573 char_u *q; | |
7 | 1574 { |
1687 | 1575 char_u *p = q; |
1576 | |
7 | 1577 while (VIM_ISDIGIT(*p)) /* skip to next non-digit */ |
1578 ++p; | |
1579 return p; | |
1580 } | |
1581 | |
741 | 1582 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
301 | 1583 /* |
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1584 * skip over binary digits |
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1585 */ |
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1586 char_u * |
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1587 skipbin(q) |
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1588 char_u *q; |
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1589 { |
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1590 char_u *p = q; |
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1591 |
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1592 while (vim_isbdigit(*p)) /* skip to next non-digit */ |
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1593 ++p; |
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1594 return p; |
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1595 } |
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1596 |
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1597 /* |
301 | 1598 * skip over digits and hex characters |
1599 */ | |
1600 char_u * | |
1687 | 1601 skiphex(q) |
1602 char_u *q; | |
301 | 1603 { |
1687 | 1604 char_u *p = q; |
1605 | |
301 | 1606 while (vim_isxdigit(*p)) /* skip to next non-digit */ |
1607 ++p; | |
1608 return p; | |
1609 } | |
1610 #endif | |
1611 | |
293 | 1612 #if defined(FEAT_EX_EXTRA) || defined(PROTO) |
1613 /* | |
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1614 * skip to bin digit (or NUL after the string) |
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1615 */ |
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1616 char_u * |
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1617 skiptobin(q) |
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1618 char_u *q; |
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1619 { |
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1620 char_u *p = q; |
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1621 |
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1622 while (*p != NUL && !vim_isbdigit(*p)) /* skip to next digit */ |
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1623 ++p; |
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1624 return p; |
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1625 } |
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1626 |
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1627 /* |
293 | 1628 * skip to digit (or NUL after the string) |
1629 */ | |
1630 char_u * | |
1687 | 1631 skiptodigit(q) |
1632 char_u *q; | |
293 | 1633 { |
1687 | 1634 char_u *p = q; |
1635 | |
293 | 1636 while (*p != NUL && !VIM_ISDIGIT(*p)) /* skip to next digit */ |
1637 ++p; | |
1638 return p; | |
1639 } | |
1640 | |
1641 /* | |
1642 * skip to hex character (or NUL after the string) | |
1643 */ | |
1644 char_u * | |
1687 | 1645 skiptohex(q) |
1646 char_u *q; | |
293 | 1647 { |
1687 | 1648 char_u *p = q; |
1649 | |
293 | 1650 while (*p != NUL && !vim_isxdigit(*p)) /* skip to next digit */ |
1651 ++p; | |
1652 return p; | |
1653 } | |
1654 #endif | |
1655 | |
7 | 1656 /* |
1657 * Variant of isdigit() that can handle characters > 0x100. | |
1658 * We don't use isdigit() here, because on some systems it also considers | |
1659 * superscript 1 to be a digit. | |
1660 * Use the VIM_ISDIGIT() macro for simple arguments. | |
1661 */ | |
1662 int | |
1663 vim_isdigit(c) | |
1664 int c; | |
1665 { | |
1666 return (c >= '0' && c <= '9'); | |
1667 } | |
1668 | |
1669 /* | |
1670 * Variant of isxdigit() that can handle characters > 0x100. | |
1671 * We don't use isxdigit() here, because on some systems it also considers | |
1672 * superscript 1 to be a digit. | |
1673 */ | |
1674 int | |
1675 vim_isxdigit(c) | |
1676 int c; | |
1677 { | |
1678 return (c >= '0' && c <= '9') | |
1679 || (c >= 'a' && c <= 'f') | |
1680 || (c >= 'A' && c <= 'F'); | |
1681 } | |
1682 | |
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1683 /* |
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1684 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1685 * characters > 0x100. |
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1686 */ |
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1687 int |
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1688 vim_isbdigit(c) |
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1689 int c; |
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1690 { |
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1691 return (c == '0' || c == '1'); |
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1692 } |
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1693 |
492 | 1694 #if defined(FEAT_MBYTE) || defined(PROTO) |
1695 /* | |
1696 * Vim's own character class functions. These exist because many library | |
1697 * islower()/toupper() etc. do not work properly: they crash when used with | |
1698 * invalid values or can't handle latin1 when the locale is C. | |
1699 * Speed is most important here. | |
1700 */ | |
1701 #define LATIN1LOWER 'l' | |
1702 #define LATIN1UPPER 'U' | |
1703 | |
497 | 1704 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
3533 | 1705 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
1706 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1707 |
1708 int | |
1709 vim_islower(c) | |
1710 int c; | |
1711 { | |
1712 if (c <= '@') | |
1713 return FALSE; | |
1714 if (c >= 0x80) | |
1715 { | |
1716 if (enc_utf8) | |
1717 return utf_islower(c); | |
1718 if (c >= 0x100) | |
1719 { | |
1720 #ifdef HAVE_ISWLOWER | |
1721 if (has_mbyte) | |
1722 return iswlower(c); | |
1723 #endif | |
1724 /* islower() can't handle these chars and may crash */ | |
1725 return FALSE; | |
1726 } | |
1727 if (enc_latin1like) | |
1728 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
1729 } | |
1730 return islower(c); | |
1731 } | |
1732 | |
1733 int | |
1734 vim_isupper(c) | |
1735 int c; | |
1736 { | |
1737 if (c <= '@') | |
1738 return FALSE; | |
1739 if (c >= 0x80) | |
1740 { | |
1741 if (enc_utf8) | |
1742 return utf_isupper(c); | |
1743 if (c >= 0x100) | |
1744 { | |
1745 #ifdef HAVE_ISWUPPER | |
1746 if (has_mbyte) | |
1747 return iswupper(c); | |
1748 #endif | |
1749 /* islower() can't handle these chars and may crash */ | |
1750 return FALSE; | |
1751 } | |
1752 if (enc_latin1like) | |
1753 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
1754 } | |
1755 return isupper(c); | |
1756 } | |
1757 | |
1758 int | |
1759 vim_toupper(c) | |
1760 int c; | |
1761 { | |
1762 if (c <= '@') | |
1763 return c; | |
1764 if (c >= 0x80) | |
1765 { | |
1766 if (enc_utf8) | |
1767 return utf_toupper(c); | |
1768 if (c >= 0x100) | |
1769 { | |
1770 #ifdef HAVE_TOWUPPER | |
1771 if (has_mbyte) | |
1772 return towupper(c); | |
1773 #endif | |
1774 /* toupper() can't handle these chars and may crash */ | |
1775 return c; | |
1776 } | |
1777 if (enc_latin1like) | |
1778 return latin1upper[c]; | |
1779 } | |
1780 return TOUPPER_LOC(c); | |
1781 } | |
1782 | |
1783 int | |
1784 vim_tolower(c) | |
1785 int c; | |
1786 { | |
1787 if (c <= '@') | |
1788 return c; | |
1789 if (c >= 0x80) | |
1790 { | |
1791 if (enc_utf8) | |
1792 return utf_tolower(c); | |
1793 if (c >= 0x100) | |
1794 { | |
1795 #ifdef HAVE_TOWLOWER | |
1796 if (has_mbyte) | |
1797 return towlower(c); | |
1798 #endif | |
1799 /* tolower() can't handle these chars and may crash */ | |
1800 return c; | |
1801 } | |
1802 if (enc_latin1like) | |
1803 return latin1lower[c]; | |
1804 } | |
1805 return TOLOWER_LOC(c); | |
1806 } | |
1807 #endif | |
1808 | |
7 | 1809 /* |
1810 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
1811 */ | |
1812 char_u * | |
1813 skiptowhite(p) | |
1814 char_u *p; | |
1815 { | |
1816 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1817 ++p; | |
1818 return p; | |
1819 } | |
1820 | |
1821 #if defined(FEAT_LISTCMDS) || defined(FEAT_SIGNS) || defined(FEAT_SNIFF) \ | |
1822 || defined(PROTO) | |
1823 /* | |
1824 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
1825 */ | |
1826 char_u * | |
1827 skiptowhite_esc(p) | |
1828 char_u *p; | |
1829 { | |
1830 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1831 { | |
1832 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
1833 ++p; | |
1834 ++p; | |
1835 } | |
1836 return p; | |
1837 } | |
1838 #endif | |
1839 | |
1840 /* | |
1841 * Getdigits: Get a number from a string and skip over it. | |
1842 * Note: the argument is a pointer to a char_u pointer! | |
1843 */ | |
1844 long | |
1845 getdigits(pp) | |
1846 char_u **pp; | |
1847 { | |
1848 char_u *p; | |
1849 long retval; | |
1850 | |
1851 p = *pp; | |
1852 retval = atol((char *)p); | |
1853 if (*p == '-') /* skip negative sign */ | |
1854 ++p; | |
1855 p = skipdigits(p); /* skip to next non-digit */ | |
1856 *pp = p; | |
1857 return retval; | |
1858 } | |
1859 | |
1860 /* | |
1861 * Return TRUE if "lbuf" is empty or only contains blanks. | |
1862 */ | |
1863 int | |
1864 vim_isblankline(lbuf) | |
1865 char_u *lbuf; | |
1866 { | |
1867 char_u *p; | |
1868 | |
1869 p = skipwhite(lbuf); | |
1870 return (*p == NUL || *p == '\r' || *p == '\n'); | |
1871 } | |
1872 | |
1873 /* | |
1874 * Convert a string into a long and/or unsigned long, taking care of | |
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1875 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
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1876 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
7 | 1877 * 0 decimal |
1878 * '0' octal | |
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1879 * 'B' bin |
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1880 * 'b' bin |
7 | 1881 * 'X' hex |
1882 * 'x' hex | |
1883 * If "len" is not NULL, the length of the number in characters is returned. | |
1884 * If "nptr" is not NULL, the signed result is returned in it. | |
1885 * If "unptr" is not NULL, the unsigned result is returned in it. | |
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1886 * If "what" contains STR2NR_BIN recognize binary numbers |
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1887 * If "what" contains STR2NR_OCT recognize octal numbers |
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1888 * If "what" contains STR2NR_HEX recognize hex numbers |
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1889 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
6927 | 1890 * If maxlen > 0, check at a maximum maxlen chars |
7 | 1891 */ |
1892 void | |
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1893 vim_str2nr(start, prep, len, what, nptr, unptr, maxlen) |
7 | 1894 char_u *start; |
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1895 int *prep; /* return: type of number 0 = decimal, 'x' |
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1896 or 'X' is hex, '0' = octal, 'b' or 'B' |
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1897 is bin */ |
7 | 1898 int *len; /* return: detected length of number */ |
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1899 int what; /* what numbers to recognize */ |
7 | 1900 long *nptr; /* return: signed result */ |
1901 unsigned long *unptr; /* return: unsigned result */ | |
6927 | 1902 int maxlen; /* max length of string to check */ |
7 | 1903 { |
1904 char_u *ptr = start; | |
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1905 int pre = 0; /* default is decimal */ |
7 | 1906 int negative = FALSE; |
1907 unsigned long un = 0; | |
39 | 1908 int n; |
7 | 1909 |
1910 if (ptr[0] == '-') | |
1911 { | |
1912 negative = TRUE; | |
1913 ++ptr; | |
1914 } | |
1915 | |
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1916 /* Recognize hex, octal, and bin. */ |
6927 | 1917 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
1918 && (maxlen == 0 || maxlen > 1)) | |
7 | 1919 { |
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1920 pre = ptr[1]; |
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1921 if ((what & STR2NR_HEX) |
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1922 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
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1923 && (maxlen == 0 || maxlen > 2)) |
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1924 /* hexadecimal */ |
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1925 ptr += 2; |
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1926 else if ((what & STR2NR_BIN) |
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1927 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
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1928 && (maxlen == 0 || maxlen > 2)) |
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1929 /* binary */ |
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1930 ptr += 2; |
7 | 1931 else |
1932 { | |
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1933 /* decimal or octal, default is decimal */ |
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1934 pre = 0; |
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1935 if (what & STR2NR_OCT) |
39 | 1936 { |
1937 /* Don't interpret "0", "08" or "0129" as octal. */ | |
1938 for (n = 1; VIM_ISDIGIT(ptr[n]); ++n) | |
1939 { | |
1940 if (ptr[n] > '7') | |
1941 { | |
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1942 pre = 0; /* can't be octal */ |
39 | 1943 break; |
1944 } | |
3292 | 1945 if (ptr[n] >= '0') |
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1946 pre = '0'; /* assume octal */ |
6927 | 1947 if (n == maxlen) |
1948 break; | |
39 | 1949 } |
1950 } | |
7 | 1951 } |
1952 } | |
1953 | |
1954 /* | |
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1955 * Do the string-to-numeric conversion "manually" to avoid sscanf quirks. |
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1956 */ |
6927 | 1957 n = 1; |
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1958 if (pre == 'B' || pre == 'b' || what == STR2NR_BIN + STR2NR_FORCE) |
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1959 { |
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1960 /* bin */ |
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1961 if (pre != 0) |
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1962 n += 2; /* skip over "0b" */ |
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1963 while ('0' <= *ptr && *ptr <= '1') |
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1964 { |
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1965 un = 2 * un + (unsigned long)(*ptr - '0'); |
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1966 ++ptr; |
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1967 if (n++ == maxlen) |
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1968 break; |
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1969 } |
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1970 } |
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1971 else if (pre == '0' || what == STR2NR_OCT + STR2NR_FORCE) |
7 | 1972 { |
293 | 1973 /* octal */ |
1974 while ('0' <= *ptr && *ptr <= '7') | |
7 | 1975 { |
293 | 1976 un = 8 * un + (unsigned long)(*ptr - '0'); |
1977 ++ptr; | |
6927 | 1978 if (n++ == maxlen) |
1979 break; | |
7 | 1980 } |
293 | 1981 } |
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1982 else if (pre != 0 || what == STR2NR_HEX + STR2NR_FORCE) |
293 | 1983 { |
1984 /* hex */ | |
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1985 if (pre != 0) |
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1986 n += 2; /* skip over "0x" */ |
293 | 1987 while (vim_isxdigit(*ptr)) |
7 | 1988 { |
293 | 1989 un = 16 * un + (unsigned long)hex2nr(*ptr); |
1990 ++ptr; | |
6927 | 1991 if (n++ == maxlen) |
1992 break; | |
7 | 1993 } |
1994 } | |
1995 else | |
1996 { | |
1997 /* decimal */ | |
1998 while (VIM_ISDIGIT(*ptr)) | |
1999 { | |
2000 un = 10 * un + (unsigned long)(*ptr - '0'); | |
2001 ++ptr; | |
6927 | 2002 if (n++ == maxlen) |
2003 break; | |
7 | 2004 } |
2005 } | |
2006 | |
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2007 if (prep != NULL) |
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2008 *prep = pre; |
7 | 2009 if (len != NULL) |
2010 *len = (int)(ptr - start); | |
2011 if (nptr != NULL) | |
16 | 2012 { |
2013 if (negative) /* account for leading '-' for decimal numbers */ | |
2014 *nptr = -(long)un; | |
2015 else | |
2016 *nptr = (long)un; | |
2017 } | |
7 | 2018 if (unptr != NULL) |
2019 *unptr = un; | |
2020 } | |
2021 | |
2022 /* | |
2023 * Return the value of a single hex character. | |
2024 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
2025 */ | |
2026 int | |
2027 hex2nr(c) | |
2028 int c; | |
2029 { | |
2030 if (c >= 'a' && c <= 'f') | |
2031 return c - 'a' + 10; | |
2032 if (c >= 'A' && c <= 'F') | |
2033 return c - 'A' + 10; | |
2034 return c - '0'; | |
2035 } | |
2036 | |
2037 #if defined(FEAT_TERMRESPONSE) \ | |
2038 || (defined(FEAT_GUI_GTK) && defined(FEAT_WINDOWS)) || defined(PROTO) | |
2039 /* | |
2040 * Convert two hex characters to a byte. | |
2041 * Return -1 if one of the characters is not hex. | |
2042 */ | |
2043 int | |
2044 hexhex2nr(p) | |
2045 char_u *p; | |
2046 { | |
2047 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
2048 return -1; | |
2049 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
2050 } | |
2051 #endif | |
2052 | |
2053 /* | |
2054 * Return TRUE if "str" starts with a backslash that should be removed. | |
2055 * For MS-DOS, WIN32 and OS/2 this is only done when the character after the | |
2056 * backslash is not a normal file name character. | |
2057 * '$' is a valid file name character, we don't remove the backslash before | |
2058 * it. This means it is not possible to use an environment variable after a | |
2059 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
2060 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
2061 * removed. Assume a file name doesn't start with a space. | |
2062 * For multi-byte names, never remove a backslash before a non-ascii | |
2063 * character, assume that all multi-byte characters are valid file name | |
2064 * characters. | |
2065 */ | |
2066 int | |
2067 rem_backslash(str) | |
2068 char_u *str; | |
2069 { | |
2070 #ifdef BACKSLASH_IN_FILENAME | |
2071 return (str[0] == '\\' | |
2072 # ifdef FEAT_MBYTE | |
2073 && str[1] < 0x80 | |
2074 # endif | |
2075 && (str[1] == ' ' | |
2076 || (str[1] != NUL | |
2077 && str[1] != '*' | |
2078 && str[1] != '?' | |
2079 && !vim_isfilec(str[1])))); | |
2080 #else | |
2081 return (str[0] == '\\' && str[1] != NUL); | |
2082 #endif | |
2083 } | |
2084 | |
2085 /* | |
2086 * Halve the number of backslashes in a file name argument. | |
2087 * For MS-DOS we only do this if the character after the backslash | |
2088 * is not a normal file character. | |
2089 */ | |
2090 void | |
2091 backslash_halve(p) | |
2092 char_u *p; | |
2093 { | |
2094 for ( ; *p; ++p) | |
2095 if (rem_backslash(p)) | |
1621 | 2096 STRMOVE(p, p + 1); |
7 | 2097 } |
2098 | |
2099 /* | |
2100 * backslash_halve() plus save the result in allocated memory. | |
2101 */ | |
2102 char_u * | |
2103 backslash_halve_save(p) | |
2104 char_u *p; | |
2105 { | |
2106 char_u *res; | |
2107 | |
2108 res = vim_strsave(p); | |
2109 if (res == NULL) | |
2110 return p; | |
2111 backslash_halve(res); | |
2112 return res; | |
2113 } | |
2114 | |
2115 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
2116 /* | |
2117 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
2118 * The first 64 entries have been added to map control characters defined in | |
2119 * ascii.h | |
2120 */ | |
2121 static char_u ebcdic2ascii_tab[256] = | |
2122 { | |
2123 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
2124 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
2125 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
2126 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
2127 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
2128 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
2129 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
2130 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
2131 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
2132 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
2133 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
2134 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
2135 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
2136 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
2137 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
2138 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
2139 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
2140 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
2141 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
2142 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
2143 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
2144 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
2145 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
2146 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
2147 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
2148 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
2149 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
2150 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
2151 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
2152 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
2153 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
2154 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
2155 }; | |
2156 | |
2157 /* | |
2158 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
2159 * wanting 7-bit ASCII characters out the other end. | |
2160 */ | |
2161 void | |
2162 ebcdic2ascii(buffer, len) | |
2163 char_u *buffer; | |
2164 int len; | |
2165 { | |
2166 int i; | |
2167 | |
2168 for (i = 0; i < len; i++) | |
2169 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
2170 } | |
2171 #endif |