Mercurial > vim
annotate src/charset.c @ 12600:590424e87b65 v8.0.1178
patch 8.0.1178: using old compiler on MS-Windows
commit https://github.com/vim/vim/commit/73f4439ca690d8224df8f88dc71a43fafdcc89bf
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Oct 7 18:38:43 2017 +0200
patch 8.0.1178: using old compiler on MS-Windows
Problem: Using old compiler on MS-Windows.
Solution: Switch default build on MS-Windows to use MSVC 2015. (Ken Takata)
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sat, 07 Oct 2017 18:45:04 +0200 |
parents | 972ea22c946f |
children | a99da335b6f1 |
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 | |
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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Include wchar.h in charset.c for towupper().
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17 # if defined(HAVE_WCHAR_H) |
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18 # include <wchar.h> /* for towupper() and towlower() */ |
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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 | |
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71 init_chartab(void) |
7 | 72 { |
73 return buf_init_chartab(curbuf, TRUE); | |
74 } | |
75 | |
76 int | |
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77 buf_init_chartab( |
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78 buf_T *buf, |
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79 int global) /* FALSE: only set buf->b_chartab[] */ |
7 | 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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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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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 | |
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316 trans_characters( |
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317 char_u *buf, |
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318 int bufsize) |
7 | 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 * | |
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359 transstr(char_u *s) |
7 | 360 { |
361 char_u *res; | |
362 char_u *p; | |
363 #ifdef FEAT_MBYTE | |
364 int l, len, c; | |
365 char_u hexbuf[11]; | |
366 #endif | |
367 | |
368 #ifdef FEAT_MBYTE | |
369 if (has_mbyte) | |
370 { | |
371 /* Compute the length of the result, taking account of unprintable | |
372 * multi-byte characters. */ | |
373 len = 0; | |
374 p = s; | |
375 while (*p != NUL) | |
376 { | |
474 | 377 if ((l = (*mb_ptr2len)(p)) > 1) |
7 | 378 { |
379 c = (*mb_ptr2char)(p); | |
380 p += l; | |
381 if (vim_isprintc(c)) | |
382 len += l; | |
383 else | |
384 { | |
385 transchar_hex(hexbuf, c); | |
835 | 386 len += (int)STRLEN(hexbuf); |
7 | 387 } |
388 } | |
389 else | |
390 { | |
391 l = byte2cells(*p++); | |
392 if (l > 0) | |
393 len += l; | |
394 else | |
395 len += 4; /* illegal byte sequence */ | |
396 } | |
397 } | |
398 res = alloc((unsigned)(len + 1)); | |
399 } | |
400 else | |
401 #endif | |
402 res = alloc((unsigned)(vim_strsize(s) + 1)); | |
403 if (res != NULL) | |
404 { | |
405 *res = NUL; | |
406 p = s; | |
407 while (*p != NUL) | |
408 { | |
409 #ifdef FEAT_MBYTE | |
474 | 410 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
7 | 411 { |
412 c = (*mb_ptr2char)(p); | |
413 if (vim_isprintc(c)) | |
414 STRNCAT(res, p, l); /* append printable multi-byte char */ | |
415 else | |
416 transchar_hex(res + STRLEN(res), c); | |
417 p += l; | |
418 } | |
419 else | |
420 #endif | |
421 STRCAT(res, transchar_byte(*p++)); | |
422 } | |
423 } | |
424 return res; | |
425 } | |
426 #endif | |
427 | |
428 #if defined(FEAT_SYN_HL) || defined(FEAT_INS_EXPAND) || defined(PROTO) | |
429 /* | |
221 | 430 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
431 * current locale. | |
130 | 432 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
433 * Otherwise puts the result in "buf[buflen]". | |
7 | 434 */ |
435 char_u * | |
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436 str_foldcase( |
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437 char_u *str, |
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438 int orglen, |
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439 char_u *buf, |
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440 int buflen) |
7 | 441 { |
442 garray_T ga; | |
443 int i; | |
130 | 444 int len = orglen; |
7 | 445 |
446 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
447 #define GA_PTR(i) ((char_u *)ga.ga_data + i) | |
130 | 448 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
449 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + i) | |
7 | 450 |
130 | 451 /* Copy "str" into "buf" or allocated memory, unmodified. */ |
452 if (buf == NULL) | |
453 { | |
454 ga_init2(&ga, 1, 10); | |
455 if (ga_grow(&ga, len + 1) == FAIL) | |
456 return NULL; | |
457 mch_memmove(ga.ga_data, str, (size_t)len); | |
458 ga.ga_len = len; | |
459 } | |
460 else | |
461 { | |
462 if (len >= buflen) /* Ugly! */ | |
463 len = buflen - 1; | |
464 mch_memmove(buf, str, (size_t)len); | |
465 } | |
466 if (buf == NULL) | |
467 GA_CHAR(len) = NUL; | |
468 else | |
469 buf[len] = NUL; | |
7 | 470 |
471 /* Make each character lower case. */ | |
472 i = 0; | |
130 | 473 while (STR_CHAR(i) != NUL) |
7 | 474 { |
475 #ifdef FEAT_MBYTE | |
130 | 476 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
7 | 477 { |
478 if (enc_utf8) | |
479 { | |
1654 | 480 int c = utf_ptr2char(STR_PTR(i)); |
3263 | 481 int olen = utf_ptr2len(STR_PTR(i)); |
1654 | 482 int lc = utf_tolower(c); |
7 | 483 |
1654 | 484 /* Only replace the character when it is not an invalid |
485 * sequence (ASCII character or more than one byte) and | |
486 * utf_tolower() doesn't return the original character. */ | |
3263 | 487 if ((c < 0x80 || olen > 1) && c != lc) |
7 | 488 { |
3263 | 489 int nlen = utf_char2len(lc); |
7 | 490 |
491 /* If the byte length changes need to shift the following | |
492 * characters forward or backward. */ | |
3263 | 493 if (olen != nlen) |
7 | 494 { |
3263 | 495 if (nlen > olen) |
130 | 496 { |
3263 | 497 if (buf == NULL |
498 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
499 : len + nlen - olen >= buflen) | |
7 | 500 { |
501 /* out of memory, keep old char */ | |
502 lc = c; | |
3263 | 503 nlen = olen; |
7 | 504 } |
130 | 505 } |
3263 | 506 if (olen != nlen) |
7 | 507 { |
130 | 508 if (buf == NULL) |
509 { | |
3263 | 510 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
511 ga.ga_len += nlen - olen; | |
130 | 512 } |
513 else | |
514 { | |
3263 | 515 STRMOVE(buf + i + nlen, buf + i + olen); |
516 len += nlen - olen; | |
130 | 517 } |
7 | 518 } |
519 } | |
130 | 520 (void)utf_char2bytes(lc, STR_PTR(i)); |
7 | 521 } |
522 } | |
523 /* skip to next multi-byte char */ | |
474 | 524 i += (*mb_ptr2len)(STR_PTR(i)); |
7 | 525 } |
526 else | |
527 #endif | |
528 { | |
130 | 529 if (buf == NULL) |
530 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
531 else | |
532 buf[i] = TOLOWER_LOC(buf[i]); | |
7 | 533 ++i; |
534 } | |
535 } | |
536 | |
130 | 537 if (buf == NULL) |
538 return (char_u *)ga.ga_data; | |
539 return buf; | |
7 | 540 } |
541 #endif | |
542 | |
543 /* | |
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544 * Catch 22: g_chartab[] can't be initialized before the options are |
7 | 545 * initialized, and initializing options may cause transchar() to be called! |
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546 * When chartab_initialized == FALSE don't use g_chartab[]. |
7 | 547 * Does NOT work for multi-byte characters, c must be <= 255. |
548 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
549 * character! | |
550 */ | |
551 static char_u transchar_buf[7]; | |
552 | |
553 char_u * | |
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554 transchar(int c) |
7 | 555 { |
556 int i; | |
557 | |
558 i = 0; | |
559 if (IS_SPECIAL(c)) /* special key code, display as ~@ char */ | |
560 { | |
561 transchar_buf[0] = '~'; | |
562 transchar_buf[1] = '@'; | |
563 i = 2; | |
564 c = K_SECOND(c); | |
565 } | |
566 | |
567 if ((!chartab_initialized && ( | |
568 #ifdef EBCDIC | |
569 (c >= 64 && c < 255) | |
570 #else | |
571 (c >= ' ' && c <= '~') | |
572 #endif | |
573 #ifdef FEAT_FKMAP | |
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574 || (p_altkeymap && F_ischar(c)) |
7 | 575 #endif |
576 )) || (c < 256 && vim_isprintc_strict(c))) | |
577 { | |
578 /* printable character */ | |
579 transchar_buf[i] = c; | |
580 transchar_buf[i + 1] = NUL; | |
581 } | |
582 else | |
583 transchar_nonprint(transchar_buf + i, c); | |
584 return transchar_buf; | |
585 } | |
586 | |
587 #if defined(FEAT_MBYTE) || defined(PROTO) | |
588 /* | |
589 * Like transchar(), but called with a byte instead of a character. Checks | |
590 * for an illegal UTF-8 byte. | |
591 */ | |
592 char_u * | |
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593 transchar_byte(int c) |
7 | 594 { |
595 if (enc_utf8 && c >= 0x80) | |
596 { | |
597 transchar_nonprint(transchar_buf, c); | |
598 return transchar_buf; | |
599 } | |
600 return transchar(c); | |
601 } | |
602 #endif | |
603 | |
604 /* | |
605 * Convert non-printable character to two or more printable characters in | |
606 * "buf[]". "buf" needs to be able to hold five bytes. | |
607 * Does NOT work for multi-byte characters, c must be <= 255. | |
608 */ | |
609 void | |
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610 transchar_nonprint(char_u *buf, int c) |
7 | 611 { |
612 if (c == NL) | |
613 c = NUL; /* we use newline in place of a NUL */ | |
614 else if (c == CAR && get_fileformat(curbuf) == EOL_MAC) | |
615 c = NL; /* we use CR in place of NL in this case */ | |
616 | |
617 if (dy_flags & DY_UHEX) /* 'display' has "uhex" */ | |
618 transchar_hex(buf, c); | |
619 | |
620 #ifdef EBCDIC | |
621 /* For EBCDIC only the characters 0-63 and 255 are not printable */ | |
622 else if (CtrlChar(c) != 0 || c == DEL) | |
623 #else | |
624 else if (c <= 0x7f) /* 0x00 - 0x1f and 0x7f */ | |
625 #endif | |
626 { | |
627 buf[0] = '^'; | |
628 #ifdef EBCDIC | |
629 if (c == DEL) | |
630 buf[1] = '?'; /* DEL displayed as ^? */ | |
631 else | |
632 buf[1] = CtrlChar(c); | |
633 #else | |
634 buf[1] = c ^ 0x40; /* DEL displayed as ^? */ | |
635 #endif | |
636 | |
637 buf[2] = NUL; | |
638 } | |
639 #ifdef FEAT_MBYTE | |
640 else if (enc_utf8 && c >= 0x80) | |
641 { | |
642 transchar_hex(buf, c); | |
643 } | |
644 #endif | |
645 #ifndef EBCDIC | |
646 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) /* 0xa0 - 0xfe */ | |
647 { | |
648 buf[0] = '|'; | |
649 buf[1] = c - 0x80; | |
650 buf[2] = NUL; | |
651 } | |
652 #else | |
653 else if (c < 64) | |
654 { | |
655 buf[0] = '~'; | |
656 buf[1] = MetaChar(c); | |
657 buf[2] = NUL; | |
658 } | |
659 #endif | |
660 else /* 0x80 - 0x9f and 0xff */ | |
661 { | |
662 /* | |
663 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
664 * them as '~?' for now | |
665 */ | |
666 buf[0] = '~'; | |
667 #ifdef EBCDIC | |
668 buf[1] = '?'; /* 0xff displayed as ~? */ | |
669 #else | |
670 buf[1] = (c - 0x80) ^ 0x40; /* 0xff displayed as ~? */ | |
671 #endif | |
672 buf[2] = NUL; | |
673 } | |
674 } | |
675 | |
676 void | |
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677 transchar_hex(char_u *buf, int c) |
7 | 678 { |
679 int i = 0; | |
680 | |
681 buf[0] = '<'; | |
682 #ifdef FEAT_MBYTE | |
683 if (c > 255) | |
684 { | |
685 buf[++i] = nr2hex((unsigned)c >> 12); | |
686 buf[++i] = nr2hex((unsigned)c >> 8); | |
687 } | |
688 #endif | |
689 buf[++i] = nr2hex((unsigned)c >> 4); | |
1869 | 690 buf[++i] = nr2hex((unsigned)c); |
7 | 691 buf[++i] = '>'; |
692 buf[++i] = NUL; | |
693 } | |
694 | |
695 /* | |
696 * Convert the lower 4 bits of byte "c" to its hex character. | |
697 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
698 * function key 1. | |
699 */ | |
1869 | 700 static unsigned |
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701 nr2hex(unsigned c) |
7 | 702 { |
703 if ((c & 0xf) <= 9) | |
704 return (c & 0xf) + '0'; | |
705 return (c & 0xf) - 10 + 'a'; | |
706 } | |
707 | |
708 /* | |
709 * Return number of display cells occupied by byte "b". | |
710 * Caller must make sure 0 <= b <= 255. | |
711 * For multi-byte mode "b" must be the first byte of a character. | |
712 * A TAB is counted as two cells: "^I". | |
713 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
714 * cells depends on further bytes. | |
715 */ | |
716 int | |
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717 byte2cells(int b) |
7 | 718 { |
719 #ifdef FEAT_MBYTE | |
720 if (enc_utf8 && b >= 0x80) | |
721 return 0; | |
722 #endif | |
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723 return (g_chartab[b] & CT_CELL_MASK); |
7 | 724 } |
725 | |
726 /* | |
727 * Return number of display cells occupied by character "c". | |
728 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
729 * A TAB is counted as two cells: "^I" or four: "<09>". | |
730 */ | |
731 int | |
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732 char2cells(int c) |
7 | 733 { |
734 if (IS_SPECIAL(c)) | |
735 return char2cells(K_SECOND(c)) + 2; | |
736 #ifdef FEAT_MBYTE | |
737 if (c >= 0x80) | |
738 { | |
739 /* UTF-8: above 0x80 need to check the value */ | |
740 if (enc_utf8) | |
741 return utf_char2cells(c); | |
742 /* DBCS: double-byte means double-width, except for euc-jp with first | |
743 * byte 0x8e */ | |
744 if (enc_dbcs != 0 && c >= 0x100) | |
745 { | |
746 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
747 return 1; | |
748 return 2; | |
749 } | |
750 } | |
751 #endif | |
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752 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
7 | 753 } |
754 | |
755 /* | |
756 * Return number of display cells occupied by character at "*p". | |
757 * A TAB is counted as two cells: "^I" or four: "<09>". | |
758 */ | |
759 int | |
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760 ptr2cells(char_u *p) |
7 | 761 { |
762 #ifdef FEAT_MBYTE | |
763 /* For UTF-8 we need to look at more bytes if the first byte is >= 0x80. */ | |
764 if (enc_utf8 && *p >= 0x80) | |
765 return utf_ptr2cells(p); | |
766 /* For DBCS we can tell the cell count from the first byte. */ | |
767 #endif | |
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768 return (g_chartab[*p] & CT_CELL_MASK); |
7 | 769 } |
770 | |
771 /* | |
3292 | 772 * Return the number of character cells string "s" will take on the screen, |
7 | 773 * counting TABs as two characters: "^I". |
774 */ | |
775 int | |
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776 vim_strsize(char_u *s) |
7 | 777 { |
778 return vim_strnsize(s, (int)MAXCOL); | |
779 } | |
780 | |
781 /* | |
3292 | 782 * Return the number of character cells string "s[len]" will take on the |
783 * screen, counting TABs as two characters: "^I". | |
7 | 784 */ |
785 int | |
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786 vim_strnsize(char_u *s, int len) |
7 | 787 { |
788 int size = 0; | |
789 | |
790 while (*s != NUL && --len >= 0) | |
791 { | |
792 #ifdef FEAT_MBYTE | |
793 if (has_mbyte) | |
794 { | |
474 | 795 int l = (*mb_ptr2len)(s); |
7 | 796 |
797 size += ptr2cells(s); | |
798 s += l; | |
799 len -= l - 1; | |
800 } | |
801 else | |
802 #endif | |
803 size += byte2cells(*s++); | |
804 } | |
805 return size; | |
806 } | |
807 | |
808 /* | |
809 * Return the number of characters 'c' will take on the screen, taking | |
810 * into account the size of a tab. | |
811 * Use a define to make it fast, this is used very often!!! | |
812 * Also see getvcol() below. | |
813 */ | |
814 | |
815 #define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ | |
816 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ | |
817 { \ | |
818 int ts; \ | |
819 ts = (buf)->b_p_ts; \ | |
820 return (int)(ts - (col % ts)); \ | |
821 } \ | |
822 else \ | |
823 return ptr2cells(p); | |
824 | |
825 int | |
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826 chartabsize(char_u *p, colnr_T col) |
7 | 827 { |
828 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
829 } | |
830 | |
831 #ifdef FEAT_LINEBREAK | |
832 static int | |
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833 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
7 | 834 { |
835 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
836 } | |
837 #endif | |
838 | |
839 /* | |
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840 * Return the number of characters the string 's' will take on the screen, |
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841 * taking into account the size of a tab. |
7 | 842 */ |
843 int | |
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844 linetabsize(char_u *s) |
7 | 845 { |
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846 return linetabsize_col(0, s); |
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847 } |
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848 |
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849 /* |
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850 * Like linetabsize(), but starting at column "startcol". |
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851 */ |
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852 int |
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853 linetabsize_col(int startcol, char_u *s) |
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854 { |
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855 colnr_T col = startcol; |
5995 | 856 char_u *line = s; /* pointer to start of line, for breakindent */ |
7 | 857 |
858 while (*s != NUL) | |
5995 | 859 col += lbr_chartabsize_adv(line, &s, col); |
7 | 860 return (int)col; |
861 } | |
862 | |
863 /* | |
864 * Like linetabsize(), but for a given window instead of the current one. | |
865 */ | |
866 int | |
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867 win_linetabsize(win_T *wp, char_u *line, colnr_T len) |
7 | 868 { |
869 colnr_T col = 0; | |
870 char_u *s; | |
871 | |
5995 | 872 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
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873 MB_PTR_ADV(s)) |
5995 | 874 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
7 | 875 return (int)col; |
876 } | |
877 | |
878 /* | |
42 | 879 * Return TRUE if 'c' is a normal identifier character: |
880 * Letters and characters from the 'isident' option. | |
7 | 881 */ |
882 int | |
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883 vim_isIDc(int c) |
7 | 884 { |
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885 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
7 | 886 } |
887 | |
888 /* | |
889 * return TRUE if 'c' is a keyword character: Letters and characters from | |
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890 * 'iskeyword' option for the current buffer. |
7 | 891 * For multi-byte characters mb_get_class() is used (builtin rules). |
892 */ | |
893 int | |
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894 vim_iswordc(int c) |
7 | 895 { |
4043 | 896 return vim_iswordc_buf(c, curbuf); |
897 } | |
898 | |
899 int | |
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900 vim_iswordc_buf(int c, buf_T *buf) |
4043 | 901 { |
7 | 902 if (c >= 0x100) |
903 { | |
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904 #ifdef FEAT_MBYTE |
7 | 905 if (enc_dbcs != 0) |
1869 | 906 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
7 | 907 if (enc_utf8) |
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908 return utf_class_buf(c, buf) >= 2; |
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909 #endif |
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910 return FALSE; |
7 | 911 } |
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912 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
7 | 913 } |
914 | |
915 /* | |
916 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
917 */ | |
918 int | |
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919 vim_iswordp(char_u *p) |
7 | 920 { |
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921 return vim_iswordp_buf(p, curbuf); |
7 | 922 } |
923 | |
924 int | |
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925 vim_iswordp_buf(char_u *p, buf_T *buf) |
7 | 926 { |
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927 int c = *p; |
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928 |
4080 | 929 #ifdef FEAT_MBYTE |
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930 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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931 c = (*mb_ptr2char)(p); |
4080 | 932 #endif |
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933 return vim_iswordc_buf(c, buf); |
7 | 934 } |
935 | |
936 /* | |
937 * return TRUE if 'c' is a valid file-name character | |
938 * Assume characters above 0x100 are valid (multi-byte). | |
939 */ | |
940 int | |
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941 vim_isfilec(int c) |
7 | 942 { |
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943 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
7 | 944 } |
945 | |
946 /* | |
1369 | 947 * return TRUE if 'c' is a valid file-name character or a wildcard character |
948 * Assume characters above 0x100 are valid (multi-byte). | |
949 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
950 * returns false. | |
951 */ | |
952 int | |
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953 vim_isfilec_or_wc(int c) |
1369 | 954 { |
955 char_u buf[2]; | |
956 | |
957 buf[0] = (char_u)c; | |
958 buf[1] = NUL; | |
959 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
960 } | |
961 | |
962 /* | |
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963 * Return TRUE if 'c' is a printable character. |
7 | 964 * Assume characters above 0x100 are printable (multi-byte), except for |
965 * Unicode. | |
966 */ | |
967 int | |
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968 vim_isprintc(int c) |
7 | 969 { |
970 #ifdef FEAT_MBYTE | |
971 if (enc_utf8 && c >= 0x100) | |
972 return utf_printable(c); | |
973 #endif | |
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974 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 975 } |
976 | |
977 /* | |
978 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
979 * byte of a double-byte character. | |
980 */ | |
981 int | |
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982 vim_isprintc_strict(int c) |
7 | 983 { |
984 #ifdef FEAT_MBYTE | |
985 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
986 return FALSE; | |
987 if (enc_utf8 && c >= 0x100) | |
988 return utf_printable(c); | |
989 #endif | |
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990 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 991 } |
992 | |
993 /* | |
994 * like chartabsize(), but also check for line breaks on the screen | |
995 */ | |
996 int | |
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997 lbr_chartabsize( |
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998 char_u *line UNUSED, /* start of the line */ |
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999 unsigned char *s, |
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1000 colnr_T col) |
7 | 1001 { |
1002 #ifdef FEAT_LINEBREAK | |
5995 | 1003 if (!curwin->w_p_lbr && *p_sbr == NUL && !curwin->w_p_bri) |
7 | 1004 { |
1005 #endif | |
1006 #ifdef FEAT_MBYTE | |
1007 if (curwin->w_p_wrap) | |
1008 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
1009 #endif | |
1010 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
1011 #ifdef FEAT_LINEBREAK | |
1012 } | |
5995 | 1013 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
7 | 1014 #endif |
1015 } | |
1016 | |
1017 /* | |
1018 * Call lbr_chartabsize() and advance the pointer. | |
1019 */ | |
1020 int | |
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1021 lbr_chartabsize_adv( |
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1022 char_u *line, /* start of the line */ |
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1023 char_u **s, |
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1024 colnr_T col) |
7 | 1025 { |
1026 int retval; | |
1027 | |
5995 | 1028 retval = lbr_chartabsize(line, *s, col); |
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1029 MB_PTR_ADV(*s); |
7 | 1030 return retval; |
1031 } | |
1032 | |
1033 /* | |
1034 * This function is used very often, keep it fast!!!! | |
1035 * | |
1036 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
1037 * string at start of line. Warning: *headp is only set if it's a non-zero | |
1038 * value, init to 0 before calling. | |
1039 */ | |
1040 int | |
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1041 win_lbr_chartabsize( |
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1042 win_T *wp, |
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1043 char_u *line UNUSED, /* start of the line */ |
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1044 char_u *s, |
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1045 colnr_T col, |
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1046 int *headp UNUSED) |
7 | 1047 { |
1048 #ifdef FEAT_LINEBREAK | |
1049 int c; | |
1050 int size; | |
1051 colnr_T col2; | |
6024 | 1052 colnr_T col_adj = 0; /* col + screen size of tab */ |
7 | 1053 colnr_T colmax; |
1054 int added; | |
1055 # ifdef FEAT_MBYTE | |
1056 int mb_added = 0; | |
1057 # else | |
1058 # define mb_added 0 | |
1059 # endif | |
1060 int numberextra; | |
1061 char_u *ps; | |
1062 int tab_corr = (*s == TAB); | |
236 | 1063 int n; |
7 | 1064 |
1065 /* | |
5995 | 1066 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
7 | 1067 */ |
5995 | 1068 if (!wp->w_p_lbr && !wp->w_p_bri && *p_sbr == NUL) |
7 | 1069 #endif |
1070 { | |
1071 #ifdef FEAT_MBYTE | |
1072 if (wp->w_p_wrap) | |
1073 return win_nolbr_chartabsize(wp, s, col, headp); | |
1074 #endif | |
1075 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
1076 } | |
1077 | |
1078 #ifdef FEAT_LINEBREAK | |
1079 /* | |
1080 * First get normal size, without 'linebreak' | |
1081 */ | |
1082 size = win_chartabsize(wp, s, col); | |
1083 c = *s; | |
6024 | 1084 if (tab_corr) |
1085 col_adj = size - 1; | |
7 | 1086 |
1087 /* | |
1088 * If 'linebreak' set check at a blank before a non-blank if the line | |
1089 * needs a break here | |
1090 */ | |
1091 if (wp->w_p_lbr | |
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1092 && VIM_ISBREAK(c) |
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1093 && !VIM_ISBREAK((int)s[1]) |
7 | 1094 && wp->w_p_wrap |
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1095 && wp->w_width != 0) |
7 | 1096 { |
1097 /* | |
1098 * Count all characters from first non-blank after a blank up to next | |
1099 * non-blank after a blank. | |
1100 */ | |
1101 numberextra = win_col_off(wp); | |
1102 col2 = col; | |
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1103 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
7 | 1104 if (col >= colmax) |
236 | 1105 { |
6024 | 1106 colmax += col_adj; |
1107 n = colmax + win_col_off2(wp); | |
236 | 1108 if (n > 0) |
6024 | 1109 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
236 | 1110 } |
1111 | |
7 | 1112 for (;;) |
1113 { | |
1114 ps = s; | |
11127
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1115 MB_PTR_ADV(s); |
7 | 1116 c = *s; |
1117 if (!(c != NUL | |
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1118 && (VIM_ISBREAK(c) |
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1119 || (!VIM_ISBREAK(c) |
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1120 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
7 | 1121 break; |
1122 | |
1123 col2 += win_chartabsize(wp, s, col2); | |
1124 if (col2 >= colmax) /* doesn't fit */ | |
1125 { | |
6024 | 1126 size = colmax - col + col_adj; |
7 | 1127 tab_corr = FALSE; |
1128 break; | |
1129 } | |
1130 } | |
1131 } | |
1132 # ifdef FEAT_MBYTE | |
1133 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
1134 && wp->w_p_wrap && in_win_border(wp, col)) | |
1135 { | |
1136 ++size; /* Count the ">" in the last column. */ | |
1137 mb_added = 1; | |
1138 } | |
1139 # endif | |
1140 | |
1141 /* | |
5995 | 1142 * May have to add something for 'breakindent' and/or 'showbreak' |
1143 * string at start of line. | |
7 | 1144 * Set *headp to the size of what we add. |
1145 */ | |
1146 added = 0; | |
5995 | 1147 if ((*p_sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
7 | 1148 { |
6503 | 1149 colnr_T sbrlen = 0; |
1150 int numberwidth = win_col_off(wp); | |
1151 | |
1152 numberextra = numberwidth; | |
7 | 1153 col += numberextra + mb_added; |
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1154 if (col >= (colnr_T)wp->w_width) |
7 | 1155 { |
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1156 col -= wp->w_width; |
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1157 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
6503 | 1158 if (col >= numberextra && numberextra > 0) |
6312 | 1159 col %= numberextra; |
6288 | 1160 if (*p_sbr != NUL) |
1161 { | |
6503 | 1162 sbrlen = (colnr_T)MB_CHARLEN(p_sbr); |
6288 | 1163 if (col >= sbrlen) |
1164 col -= sbrlen; | |
1165 } | |
6503 | 1166 if (col >= numberextra && numberextra > 0) |
7 | 1167 col = col % numberextra; |
6503 | 1168 else if (col > 0 && numberextra > 0) |
1169 col += numberwidth - win_col_off2(wp); | |
1170 | |
1171 numberwidth -= win_col_off2(wp); | |
7 | 1172 } |
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|
1173 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
7 | 1174 { |
5995 | 1175 added = 0; |
1176 if (*p_sbr != NUL) | |
6503 | 1177 { |
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1178 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
6503 | 1179 { |
1180 /* calculate effective window width */ | |
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1181 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
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1182 int prev_width = col ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
6503 | 1183 if (width == 0) |
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1184 width = (colnr_T)wp->w_width; |
6503 | 1185 added += ((size - prev_width) / width) * vim_strsize(p_sbr); |
1186 if ((size - prev_width) % width) | |
1187 /* wrapped, add another length of 'sbr' */ | |
1188 added += vim_strsize(p_sbr); | |
1189 } | |
1190 else | |
1191 added += vim_strsize(p_sbr); | |
1192 } | |
5995 | 1193 if (wp->w_p_bri) |
1194 added += get_breakindent_win(wp, line); | |
1195 | |
6160 | 1196 size += added; |
7 | 1197 if (col != 0) |
1198 added = 0; | |
1199 } | |
1200 } | |
1201 if (headp != NULL) | |
1202 *headp = added + mb_added; | |
1203 return size; | |
1204 #endif | |
1205 } | |
1206 | |
1207 #if defined(FEAT_MBYTE) || defined(PROTO) | |
1208 /* | |
1209 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
1210 * 'wrap' is on. This means we need to check for a double-byte character that | |
1211 * doesn't fit at the end of the screen line. | |
1212 */ | |
1213 static int | |
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changeset
|
1214 win_nolbr_chartabsize( |
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1215 win_T *wp, |
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|
1216 char_u *s, |
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1217 colnr_T col, |
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|
1218 int *headp) |
7 | 1219 { |
1220 int n; | |
1221 | |
1222 if (*s == TAB && (!wp->w_p_list || lcs_tab1)) | |
1223 { | |
1224 n = wp->w_buffer->b_p_ts; | |
1225 return (int)(n - (col % n)); | |
1226 } | |
1227 n = ptr2cells(s); | |
1228 /* Add one cell for a double-width character in the last column of the | |
1229 * window, displayed with a ">". */ | |
1230 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) | |
1231 { | |
1232 if (headp != NULL) | |
1233 *headp = 1; | |
1234 return 3; | |
1235 } | |
1236 return n; | |
1237 } | |
1238 | |
1239 /* | |
1240 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
1241 * "wp". | |
1242 */ | |
1243 int | |
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1244 in_win_border(win_T *wp, colnr_T vcol) |
7 | 1245 { |
1869 | 1246 int width1; /* width of first line (after line number) */ |
1247 int width2; /* width of further lines */ | |
7 | 1248 |
1249 if (wp->w_width == 0) /* there is no border */ | |
1250 return FALSE; | |
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1251 width1 = wp->w_width - win_col_off(wp); |
1869 | 1252 if ((int)vcol < width1 - 1) |
7 | 1253 return FALSE; |
1869 | 1254 if ((int)vcol == width1 - 1) |
7 | 1255 return TRUE; |
1256 width2 = width1 + win_col_off2(wp); | |
1970 | 1257 if (width2 <= 0) |
1258 return FALSE; | |
7 | 1259 return ((vcol - width1) % width2 == width2 - 1); |
1260 } | |
1261 #endif /* FEAT_MBYTE */ | |
1262 | |
1263 /* | |
1264 * Get virtual column number of pos. | |
1265 * start: on the first position of this character (TAB, ctrl) | |
1266 * cursor: where the cursor is on this character (first char, except for TAB) | |
1267 * end: on the last position of this character (TAB, ctrl) | |
1268 * | |
1269 * This is used very often, keep it fast! | |
1270 */ | |
1271 void | |
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1272 getvcol( |
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1273 win_T *wp, |
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1274 pos_T *pos, |
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1275 colnr_T *start, |
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1276 colnr_T *cursor, |
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changeset
|
1277 colnr_T *end) |
7 | 1278 { |
1279 colnr_T vcol; | |
1280 char_u *ptr; /* points to current char */ | |
1281 char_u *posptr; /* points to char at pos->col */ | |
5995 | 1282 char_u *line; /* start of the line */ |
7 | 1283 int incr; |
1284 int head; | |
1285 int ts = wp->w_buffer->b_p_ts; | |
1286 int c; | |
1287 | |
1288 vcol = 0; | |
5995 | 1289 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
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1290 if (pos->col == MAXCOL) |
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1291 posptr = NULL; /* continue until the NUL */ |
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1292 else |
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1293 { |
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1294 /* Special check for an empty line, which can happen on exit, when |
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1295 * ml_get_buf() always returns an empty string. */ |
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1296 if (*ptr == NUL) |
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1297 pos->col = 0; |
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1298 posptr = ptr + pos->col; |
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1299 #ifdef FEAT_MBYTE |
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1300 if (has_mbyte) |
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1301 /* always start on the first byte */ |
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1302 posptr -= (*mb_head_off)(line, posptr); |
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1303 #endif |
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1304 } |
7 | 1305 |
1306 /* | |
1307 * This function is used very often, do some speed optimizations. | |
5995 | 1308 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
1309 * use a simple loop. | |
7 | 1310 * Also use this when 'list' is set but tabs take their normal size. |
1311 */ | |
1312 if ((!wp->w_p_list || lcs_tab1 != NUL) | |
1313 #ifdef FEAT_LINEBREAK | |
5995 | 1314 && !wp->w_p_lbr && *p_sbr == NUL && !wp->w_p_bri |
7 | 1315 #endif |
1316 ) | |
1317 { | |
1318 #ifndef FEAT_MBYTE | |
1319 head = 0; | |
1320 #endif | |
1321 for (;;) | |
1322 { | |
1323 #ifdef FEAT_MBYTE | |
1324 head = 0; | |
1325 #endif | |
1326 c = *ptr; | |
1327 /* make sure we don't go past the end of the line */ | |
1328 if (c == NUL) | |
1329 { | |
1330 incr = 1; /* NUL at end of line only takes one column */ | |
1331 break; | |
1332 } | |
1333 /* A tab gets expanded, depending on the current column */ | |
1334 if (c == TAB) | |
1335 incr = ts - (vcol % ts); | |
1336 else | |
1337 { | |
1338 #ifdef FEAT_MBYTE | |
1339 if (has_mbyte) | |
1340 { | |
1341 /* For utf-8, if the byte is >= 0x80, need to look at | |
1342 * further bytes to find the cell width. */ | |
1343 if (enc_utf8 && c >= 0x80) | |
1344 incr = utf_ptr2cells(ptr); | |
1345 else | |
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changeset
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1346 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1347 |
1348 /* If a double-cell char doesn't fit at the end of a line | |
1349 * it wraps to the next line, it's like this char is three | |
1350 * cells wide. */ | |
1546 | 1351 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
1352 && in_win_border(wp, vcol)) | |
7 | 1353 { |
1354 ++incr; | |
1355 head = 1; | |
1356 } | |
1357 } | |
1358 else | |
1359 #endif | |
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changeset
|
1360 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1361 } |
1362 | |
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1363 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
7 | 1364 break; |
1365 | |
1366 vcol += incr; | |
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1367 MB_PTR_ADV(ptr); |
7 | 1368 } |
1369 } | |
1370 else | |
1371 { | |
1372 for (;;) | |
1373 { | |
1374 /* A tab gets expanded, depending on the current column */ | |
1375 head = 0; | |
5995 | 1376 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
7 | 1377 /* make sure we don't go past the end of the line */ |
1378 if (*ptr == NUL) | |
1379 { | |
1380 incr = 1; /* NUL at end of line only takes one column */ | |
1381 break; | |
1382 } | |
1383 | |
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1384 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
7 | 1385 break; |
1386 | |
1387 vcol += incr; | |
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1388 MB_PTR_ADV(ptr); |
7 | 1389 } |
1390 } | |
1391 if (start != NULL) | |
1392 *start = vcol + head; | |
1393 if (end != NULL) | |
1394 *end = vcol + incr - 1; | |
1395 if (cursor != NULL) | |
1396 { | |
1397 if (*ptr == TAB | |
1398 && (State & NORMAL) | |
1399 && !wp->w_p_list | |
1400 && !virtual_active() | |
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1401 && !(VIsual_active |
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1402 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
7 | 1403 ) |
1404 *cursor = vcol + incr - 1; /* cursor at end */ | |
1405 else | |
1406 *cursor = vcol + head; /* cursor at start */ | |
1407 } | |
1408 } | |
1409 | |
1410 /* | |
1411 * Get virtual cursor column in the current window, pretending 'list' is off. | |
1412 */ | |
1413 colnr_T | |
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1414 getvcol_nolist(pos_T *posp) |
7 | 1415 { |
1416 int list_save = curwin->w_p_list; | |
1417 colnr_T vcol; | |
1418 | |
1419 curwin->w_p_list = FALSE; | |
1420 getvcol(curwin, posp, NULL, &vcol, NULL); | |
1421 curwin->w_p_list = list_save; | |
1422 return vcol; | |
1423 } | |
1424 | |
1425 #if defined(FEAT_VIRTUALEDIT) || defined(PROTO) | |
1426 /* | |
1427 * Get virtual column in virtual mode. | |
1428 */ | |
1429 void | |
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1430 getvvcol( |
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|
1431 win_T *wp, |
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1432 pos_T *pos, |
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|
1433 colnr_T *start, |
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1434 colnr_T *cursor, |
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1435 colnr_T *end) |
7 | 1436 { |
1437 colnr_T col; | |
1438 colnr_T coladd; | |
1439 colnr_T endadd; | |
1440 # ifdef FEAT_MBYTE | |
1441 char_u *ptr; | |
1442 # endif | |
1443 | |
1444 if (virtual_active()) | |
1445 { | |
1446 /* For virtual mode, only want one value */ | |
1447 getvcol(wp, pos, &col, NULL, NULL); | |
1448 | |
1449 coladd = pos->coladd; | |
1450 endadd = 0; | |
1451 # ifdef FEAT_MBYTE | |
1452 /* Cannot put the cursor on part of a wide character. */ | |
1453 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); | |
1869 | 1454 if (pos->col < (colnr_T)STRLEN(ptr)) |
7 | 1455 { |
1456 int c = (*mb_ptr2char)(ptr + pos->col); | |
1457 | |
1458 if (c != TAB && vim_isprintc(c)) | |
1459 { | |
1869 | 1460 endadd = (colnr_T)(char2cells(c) - 1); |
557 | 1461 if (coladd > endadd) /* past end of line */ |
1462 endadd = 0; | |
7 | 1463 else |
1464 coladd = 0; | |
1465 } | |
1466 } | |
1467 # endif | |
1468 col += coladd; | |
1469 if (start != NULL) | |
1470 *start = col; | |
1471 if (cursor != NULL) | |
1472 *cursor = col; | |
1473 if (end != NULL) | |
1474 *end = col + endadd; | |
1475 } | |
1476 else | |
1477 getvcol(wp, pos, start, cursor, end); | |
1478 } | |
1479 #endif | |
1480 | |
1481 /* | |
1482 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
1483 * Used for Visual block mode. | |
1484 */ | |
1485 void | |
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1486 getvcols( |
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1487 win_T *wp, |
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1488 pos_T *pos1, |
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1489 pos_T *pos2, |
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1490 colnr_T *left, |
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1491 colnr_T *right) |
7 | 1492 { |
1493 colnr_T from1, from2, to1, to2; | |
1494 | |
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1495 if (LT_POSP(pos1, pos2)) |
7 | 1496 { |
1497 getvvcol(wp, pos1, &from1, NULL, &to1); | |
1498 getvvcol(wp, pos2, &from2, NULL, &to2); | |
1499 } | |
1500 else | |
1501 { | |
1502 getvvcol(wp, pos2, &from1, NULL, &to1); | |
1503 getvvcol(wp, pos1, &from2, NULL, &to2); | |
1504 } | |
1505 if (from2 < from1) | |
1506 *left = from2; | |
1507 else | |
1508 *left = from1; | |
1509 if (to2 > to1) | |
1510 { | |
1511 if (*p_sel == 'e' && from2 - 1 >= to1) | |
1512 *right = from2 - 1; | |
1513 else | |
1514 *right = to2; | |
1515 } | |
1516 else | |
1517 *right = to1; | |
1518 } | |
1519 | |
1520 /* | |
1521 * skipwhite: skip over ' ' and '\t'. | |
1522 */ | |
1523 char_u * | |
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1524 skipwhite(char_u *q) |
7 | 1525 { |
1687 | 1526 char_u *p = q; |
1527 | |
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1528 while (VIM_ISWHITE(*p)) /* skip to next non-white */ |
7 | 1529 ++p; |
1530 return p; | |
1531 } | |
1532 | |
1533 /* | |
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1534 * getwhitecols: return the number of whitespace |
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1535 * columns (bytes) at the start of a given line |
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1536 */ |
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1537 int |
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1538 getwhitecols_curline() |
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1539 { |
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1540 return getwhitecols(ml_get_curline()); |
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1541 } |
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1542 |
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1543 int |
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1544 getwhitecols(char_u *p) |
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1545 { |
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1546 return skipwhite(p) - p; |
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1547 } |
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1548 |
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1549 /* |
293 | 1550 * skip over digits |
7 | 1551 */ |
1552 char_u * | |
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1553 skipdigits(char_u *q) |
7 | 1554 { |
1687 | 1555 char_u *p = q; |
1556 | |
7 | 1557 while (VIM_ISDIGIT(*p)) /* skip to next non-digit */ |
1558 ++p; | |
1559 return p; | |
1560 } | |
1561 | |
741 | 1562 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
301 | 1563 /* |
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1564 * skip over binary digits |
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1565 */ |
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1566 char_u * |
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1567 skipbin(char_u *q) |
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1568 { |
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1569 char_u *p = q; |
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1570 |
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1571 while (vim_isbdigit(*p)) /* skip to next non-digit */ |
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1572 ++p; |
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1573 return p; |
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1574 } |
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1575 |
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1576 /* |
301 | 1577 * skip over digits and hex characters |
1578 */ | |
1579 char_u * | |
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1580 skiphex(char_u *q) |
301 | 1581 { |
1687 | 1582 char_u *p = q; |
1583 | |
301 | 1584 while (vim_isxdigit(*p)) /* skip to next non-digit */ |
1585 ++p; | |
1586 return p; | |
1587 } | |
1588 #endif | |
1589 | |
293 | 1590 /* |
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1591 * skip to bin digit (or NUL after the string) |
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1592 */ |
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1593 char_u * |
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1594 skiptobin(char_u *q) |
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1595 { |
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1596 char_u *p = q; |
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1597 |
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1598 while (*p != NUL && !vim_isbdigit(*p)) /* skip to next digit */ |
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1599 ++p; |
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1600 return p; |
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1601 } |
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1602 |
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1603 /* |
293 | 1604 * skip to digit (or NUL after the string) |
1605 */ | |
1606 char_u * | |
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1607 skiptodigit(char_u *q) |
293 | 1608 { |
1687 | 1609 char_u *p = q; |
1610 | |
293 | 1611 while (*p != NUL && !VIM_ISDIGIT(*p)) /* skip to next digit */ |
1612 ++p; | |
1613 return p; | |
1614 } | |
1615 | |
1616 /* | |
1617 * skip to hex character (or NUL after the string) | |
1618 */ | |
1619 char_u * | |
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1620 skiptohex(char_u *q) |
293 | 1621 { |
1687 | 1622 char_u *p = q; |
1623 | |
293 | 1624 while (*p != NUL && !vim_isxdigit(*p)) /* skip to next digit */ |
1625 ++p; | |
1626 return p; | |
1627 } | |
1628 | |
7 | 1629 /* |
1630 * Variant of isdigit() that can handle characters > 0x100. | |
1631 * We don't use isdigit() here, because on some systems it also considers | |
1632 * superscript 1 to be a digit. | |
1633 * Use the VIM_ISDIGIT() macro for simple arguments. | |
1634 */ | |
1635 int | |
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1636 vim_isdigit(int c) |
7 | 1637 { |
1638 return (c >= '0' && c <= '9'); | |
1639 } | |
1640 | |
1641 /* | |
1642 * Variant of isxdigit() that can handle characters > 0x100. | |
1643 * We don't use isxdigit() here, because on some systems it also considers | |
1644 * superscript 1 to be a digit. | |
1645 */ | |
1646 int | |
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1647 vim_isxdigit(int c) |
7 | 1648 { |
1649 return (c >= '0' && c <= '9') | |
1650 || (c >= 'a' && c <= 'f') | |
1651 || (c >= 'A' && c <= 'F'); | |
1652 } | |
1653 | |
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1654 /* |
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1655 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1656 * characters > 0x100. |
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1657 */ |
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1658 int |
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1659 vim_isbdigit(int c) |
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1660 { |
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1661 return (c == '0' || c == '1'); |
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1662 } |
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1663 |
492 | 1664 #if defined(FEAT_MBYTE) || defined(PROTO) |
1665 /* | |
1666 * Vim's own character class functions. These exist because many library | |
1667 * islower()/toupper() etc. do not work properly: they crash when used with | |
1668 * invalid values or can't handle latin1 when the locale is C. | |
1669 * Speed is most important here. | |
1670 */ | |
1671 #define LATIN1LOWER 'l' | |
1672 #define LATIN1UPPER 'U' | |
1673 | |
497 | 1674 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
3533 | 1675 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
1676 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1677 |
1678 int | |
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1679 vim_islower(int c) |
492 | 1680 { |
1681 if (c <= '@') | |
1682 return FALSE; | |
1683 if (c >= 0x80) | |
1684 { | |
1685 if (enc_utf8) | |
1686 return utf_islower(c); | |
1687 if (c >= 0x100) | |
1688 { | |
1689 #ifdef HAVE_ISWLOWER | |
1690 if (has_mbyte) | |
1691 return iswlower(c); | |
1692 #endif | |
1693 /* islower() can't handle these chars and may crash */ | |
1694 return FALSE; | |
1695 } | |
1696 if (enc_latin1like) | |
1697 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
1698 } | |
1699 return islower(c); | |
1700 } | |
1701 | |
1702 int | |
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1703 vim_isupper(int c) |
492 | 1704 { |
1705 if (c <= '@') | |
1706 return FALSE; | |
1707 if (c >= 0x80) | |
1708 { | |
1709 if (enc_utf8) | |
1710 return utf_isupper(c); | |
1711 if (c >= 0x100) | |
1712 { | |
1713 #ifdef HAVE_ISWUPPER | |
1714 if (has_mbyte) | |
1715 return iswupper(c); | |
1716 #endif | |
1717 /* islower() can't handle these chars and may crash */ | |
1718 return FALSE; | |
1719 } | |
1720 if (enc_latin1like) | |
1721 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
1722 } | |
1723 return isupper(c); | |
1724 } | |
1725 | |
1726 int | |
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1727 vim_toupper(int c) |
492 | 1728 { |
1729 if (c <= '@') | |
1730 return c; | |
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1731 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1732 { |
1733 if (enc_utf8) | |
1734 return utf_toupper(c); | |
1735 if (c >= 0x100) | |
1736 { | |
1737 #ifdef HAVE_TOWUPPER | |
1738 if (has_mbyte) | |
1739 return towupper(c); | |
1740 #endif | |
1741 /* toupper() can't handle these chars and may crash */ | |
1742 return c; | |
1743 } | |
1744 if (enc_latin1like) | |
1745 return latin1upper[c]; | |
1746 } | |
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1747 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1748 return TOUPPER_ASC(c); |
492 | 1749 return TOUPPER_LOC(c); |
1750 } | |
1751 | |
1752 int | |
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1753 vim_tolower(int c) |
492 | 1754 { |
1755 if (c <= '@') | |
1756 return c; | |
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1757 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1758 { |
1759 if (enc_utf8) | |
1760 return utf_tolower(c); | |
1761 if (c >= 0x100) | |
1762 { | |
1763 #ifdef HAVE_TOWLOWER | |
1764 if (has_mbyte) | |
1765 return towlower(c); | |
1766 #endif | |
1767 /* tolower() can't handle these chars and may crash */ | |
1768 return c; | |
1769 } | |
1770 if (enc_latin1like) | |
1771 return latin1lower[c]; | |
1772 } | |
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1773 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1774 return TOLOWER_ASC(c); |
492 | 1775 return TOLOWER_LOC(c); |
1776 } | |
1777 #endif | |
1778 | |
7 | 1779 /* |
1780 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
1781 */ | |
1782 char_u * | |
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1783 skiptowhite(char_u *p) |
7 | 1784 { |
1785 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1786 ++p; | |
1787 return p; | |
1788 } | |
1789 | |
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1790 #if defined(FEAT_LISTCMDS) || defined(FEAT_SIGNS) || defined(PROTO) |
7 | 1791 /* |
1792 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
1793 */ | |
1794 char_u * | |
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1795 skiptowhite_esc(char_u *p) |
7 | 1796 { |
1797 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1798 { | |
1799 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
1800 ++p; | |
1801 ++p; | |
1802 } | |
1803 return p; | |
1804 } | |
1805 #endif | |
1806 | |
1807 /* | |
1808 * Getdigits: Get a number from a string and skip over it. | |
1809 * Note: the argument is a pointer to a char_u pointer! | |
1810 */ | |
1811 long | |
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1812 getdigits(char_u **pp) |
7 | 1813 { |
1814 char_u *p; | |
1815 long retval; | |
1816 | |
1817 p = *pp; | |
1818 retval = atol((char *)p); | |
1819 if (*p == '-') /* skip negative sign */ | |
1820 ++p; | |
1821 p = skipdigits(p); /* skip to next non-digit */ | |
1822 *pp = p; | |
1823 return retval; | |
1824 } | |
1825 | |
1826 /* | |
1827 * Return TRUE if "lbuf" is empty or only contains blanks. | |
1828 */ | |
1829 int | |
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1830 vim_isblankline(char_u *lbuf) |
7 | 1831 { |
1832 char_u *p; | |
1833 | |
1834 p = skipwhite(lbuf); | |
1835 return (*p == NUL || *p == '\r' || *p == '\n'); | |
1836 } | |
1837 | |
1838 /* | |
1839 * Convert a string into a long and/or unsigned long, taking care of | |
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1840 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
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1841 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
7 | 1842 * 0 decimal |
1843 * '0' octal | |
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1844 * 'B' bin |
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1845 * 'b' bin |
7 | 1846 * 'X' hex |
1847 * 'x' hex | |
1848 * If "len" is not NULL, the length of the number in characters is returned. | |
1849 * If "nptr" is not NULL, the signed result is returned in it. | |
1850 * If "unptr" is not NULL, the unsigned result is returned in it. | |
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1851 * If "what" contains STR2NR_BIN recognize binary numbers |
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1852 * If "what" contains STR2NR_OCT recognize octal numbers |
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1853 * If "what" contains STR2NR_HEX recognize hex numbers |
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1854 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
6927 | 1855 * If maxlen > 0, check at a maximum maxlen chars |
7 | 1856 */ |
1857 void | |
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1858 vim_str2nr( |
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1859 char_u *start, |
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1860 int *prep, /* return: type of number 0 = decimal, 'x' |
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1861 or 'X' is hex, '0' = octal, 'b' or 'B' |
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1862 is bin */ |
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1863 int *len, /* return: detected length of number */ |
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1864 int what, /* what numbers to recognize */ |
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1865 varnumber_T *nptr, /* return: signed result */ |
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1866 uvarnumber_T *unptr, /* return: unsigned result */ |
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1867 int maxlen) /* max length of string to check */ |
7 | 1868 { |
1869 char_u *ptr = start; | |
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1870 int pre = 0; /* default is decimal */ |
7 | 1871 int negative = FALSE; |
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1872 uvarnumber_T un = 0; |
39 | 1873 int n; |
7 | 1874 |
1875 if (ptr[0] == '-') | |
1876 { | |
1877 negative = TRUE; | |
1878 ++ptr; | |
1879 } | |
1880 | |
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1881 /* Recognize hex, octal, and bin. */ |
6927 | 1882 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
1883 && (maxlen == 0 || maxlen > 1)) | |
7 | 1884 { |
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1885 pre = ptr[1]; |
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1886 if ((what & STR2NR_HEX) |
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1887 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
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1888 && (maxlen == 0 || maxlen > 2)) |
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1889 /* hexadecimal */ |
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1890 ptr += 2; |
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1891 else if ((what & STR2NR_BIN) |
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1892 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
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1893 && (maxlen == 0 || maxlen > 2)) |
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1894 /* binary */ |
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1895 ptr += 2; |
7 | 1896 else |
1897 { | |
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1898 /* decimal or octal, default is decimal */ |
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1899 pre = 0; |
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1900 if (what & STR2NR_OCT) |
39 | 1901 { |
1902 /* Don't interpret "0", "08" or "0129" as octal. */ | |
1903 for (n = 1; VIM_ISDIGIT(ptr[n]); ++n) | |
1904 { | |
1905 if (ptr[n] > '7') | |
1906 { | |
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1907 pre = 0; /* can't be octal */ |
39 | 1908 break; |
1909 } | |
3292 | 1910 if (ptr[n] >= '0') |
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1911 pre = '0'; /* assume octal */ |
6927 | 1912 if (n == maxlen) |
1913 break; | |
39 | 1914 } |
1915 } | |
7 | 1916 } |
1917 } | |
1918 | |
1919 /* | |
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1920 * Do the string-to-numeric conversion "manually" to avoid sscanf quirks. |
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1921 */ |
6927 | 1922 n = 1; |
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1923 if (pre == 'B' || pre == 'b' || what == STR2NR_BIN + STR2NR_FORCE) |
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1924 { |
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1925 /* bin */ |
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1926 if (pre != 0) |
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1927 n += 2; /* skip over "0b" */ |
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1928 while ('0' <= *ptr && *ptr <= '1') |
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1929 { |
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1930 /* avoid ubsan error for overflow */ |
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1931 if (un < UVARNUM_MAX / 2) |
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1932 un = 2 * un + (unsigned long)(*ptr - '0'); |
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1933 else |
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1934 un = UVARNUM_MAX; |
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1935 ++ptr; |
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1936 if (n++ == maxlen) |
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1937 break; |
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1938 } |
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1939 } |
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1940 else if (pre == '0' || what == STR2NR_OCT + STR2NR_FORCE) |
7 | 1941 { |
293 | 1942 /* octal */ |
1943 while ('0' <= *ptr && *ptr <= '7') | |
7 | 1944 { |
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1945 /* avoid ubsan error for overflow */ |
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1946 if (un < UVARNUM_MAX / 8) |
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1947 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
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1948 else |
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1949 un = UVARNUM_MAX; |
293 | 1950 ++ptr; |
6927 | 1951 if (n++ == maxlen) |
1952 break; | |
7 | 1953 } |
293 | 1954 } |
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1955 else if (pre != 0 || what == STR2NR_HEX + STR2NR_FORCE) |
293 | 1956 { |
1957 /* hex */ | |
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1958 if (pre != 0) |
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1959 n += 2; /* skip over "0x" */ |
293 | 1960 while (vim_isxdigit(*ptr)) |
7 | 1961 { |
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1962 /* avoid ubsan error for overflow */ |
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1963 if (un < UVARNUM_MAX / 16) |
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1964 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
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1965 else |
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1966 un = UVARNUM_MAX; |
293 | 1967 ++ptr; |
6927 | 1968 if (n++ == maxlen) |
1969 break; | |
7 | 1970 } |
1971 } | |
1972 else | |
1973 { | |
1974 /* decimal */ | |
1975 while (VIM_ISDIGIT(*ptr)) | |
1976 { | |
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1977 /* avoid ubsan error for overflow */ |
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1978 if (un < UVARNUM_MAX / 10) |
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1979 un = 10 * un + (uvarnumber_T)(*ptr - '0'); |
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1980 else |
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1981 un = UVARNUM_MAX; |
7 | 1982 ++ptr; |
6927 | 1983 if (n++ == maxlen) |
1984 break; | |
7 | 1985 } |
1986 } | |
1987 | |
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1988 if (prep != NULL) |
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1989 *prep = pre; |
7 | 1990 if (len != NULL) |
1991 *len = (int)(ptr - start); | |
1992 if (nptr != NULL) | |
16 | 1993 { |
1994 if (negative) /* account for leading '-' for decimal numbers */ | |
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1995 { |
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1996 /* avoid ubsan error for overflow */ |
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1997 if (un > VARNUM_MAX) |
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1998 *nptr = VARNUM_MIN; |
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1999 else |
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2000 *nptr = -(varnumber_T)un; |
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2001 } |
16 | 2002 else |
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2003 { |
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2004 if (un > VARNUM_MAX) |
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2005 un = VARNUM_MAX; |
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2006 *nptr = (varnumber_T)un; |
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2007 } |
16 | 2008 } |
7 | 2009 if (unptr != NULL) |
2010 *unptr = un; | |
2011 } | |
2012 | |
2013 /* | |
2014 * Return the value of a single hex character. | |
2015 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
2016 */ | |
2017 int | |
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2018 hex2nr(int c) |
7 | 2019 { |
2020 if (c >= 'a' && c <= 'f') | |
2021 return c - 'a' + 10; | |
2022 if (c >= 'A' && c <= 'F') | |
2023 return c - 'A' + 10; | |
2024 return c - '0'; | |
2025 } | |
2026 | |
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2027 #if defined(FEAT_TERMRESPONSE) || defined(FEAT_GUI_GTK) || defined(PROTO) |
7 | 2028 /* |
2029 * Convert two hex characters to a byte. | |
2030 * Return -1 if one of the characters is not hex. | |
2031 */ | |
2032 int | |
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2033 hexhex2nr(char_u *p) |
7 | 2034 { |
2035 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
2036 return -1; | |
2037 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
2038 } | |
2039 #endif | |
2040 | |
2041 /* | |
2042 * Return TRUE if "str" starts with a backslash that should be removed. | |
2043 * For MS-DOS, WIN32 and OS/2 this is only done when the character after the | |
2044 * backslash is not a normal file name character. | |
2045 * '$' is a valid file name character, we don't remove the backslash before | |
2046 * it. This means it is not possible to use an environment variable after a | |
2047 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
2048 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
2049 * removed. Assume a file name doesn't start with a space. | |
2050 * For multi-byte names, never remove a backslash before a non-ascii | |
2051 * character, assume that all multi-byte characters are valid file name | |
2052 * characters. | |
2053 */ | |
2054 int | |
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2055 rem_backslash(char_u *str) |
7 | 2056 { |
2057 #ifdef BACKSLASH_IN_FILENAME | |
2058 return (str[0] == '\\' | |
2059 # ifdef FEAT_MBYTE | |
2060 && str[1] < 0x80 | |
2061 # endif | |
2062 && (str[1] == ' ' | |
2063 || (str[1] != NUL | |
2064 && str[1] != '*' | |
2065 && str[1] != '?' | |
2066 && !vim_isfilec(str[1])))); | |
2067 #else | |
2068 return (str[0] == '\\' && str[1] != NUL); | |
2069 #endif | |
2070 } | |
2071 | |
2072 /* | |
2073 * Halve the number of backslashes in a file name argument. | |
2074 * For MS-DOS we only do this if the character after the backslash | |
2075 * is not a normal file character. | |
2076 */ | |
2077 void | |
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2078 backslash_halve(char_u *p) |
7 | 2079 { |
2080 for ( ; *p; ++p) | |
2081 if (rem_backslash(p)) | |
1621 | 2082 STRMOVE(p, p + 1); |
7 | 2083 } |
2084 | |
2085 /* | |
2086 * backslash_halve() plus save the result in allocated memory. | |
2087 */ | |
2088 char_u * | |
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2089 backslash_halve_save(char_u *p) |
7 | 2090 { |
2091 char_u *res; | |
2092 | |
2093 res = vim_strsave(p); | |
2094 if (res == NULL) | |
2095 return p; | |
2096 backslash_halve(res); | |
2097 return res; | |
2098 } | |
2099 | |
2100 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
2101 /* | |
2102 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
2103 * The first 64 entries have been added to map control characters defined in | |
2104 * ascii.h | |
2105 */ | |
2106 static char_u ebcdic2ascii_tab[256] = | |
2107 { | |
2108 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
2109 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
2110 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
2111 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
2112 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
2113 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
2114 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
2115 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
2116 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
2117 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
2118 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
2119 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
2120 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
2121 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
2122 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
2123 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
2124 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
2125 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
2126 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
2127 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
2128 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
2129 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
2130 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
2131 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
2132 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
2133 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
2134 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
2135 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
2136 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
2137 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
2138 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
2139 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
2140 }; | |
2141 | |
2142 /* | |
2143 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
2144 * wanting 7-bit ASCII characters out the other end. | |
2145 */ | |
2146 void | |
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2147 ebcdic2ascii(char_u *buffer, int len) |
7 | 2148 { |
2149 int i; | |
2150 | |
2151 for (i = 0; i < len; i++) | |
2152 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
2153 } | |
2154 #endif |