Mercurial > vim
annotate src/charset.c @ 29367:cc4b36422ecb v9.0.0026
patch 9.0.0026: accessing freed memory with diff put
Commit: https://github.com/vim/vim/commit/c5274dd12224421f2430b30c53b881b9403d649e
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Jul 2 15:10:00 2022 +0100
patch 9.0.0026: accessing freed memory with diff put
Problem: Accessing freed memory with diff put.
Solution: Bail out when diff pointer is no longer valid.
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Sat, 02 Jul 2022 16:15:03 +0200 |
parents | 8973f2f00872 |
children | 057c26b5c33a |
rev | line source |
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 | |
10 #include "vim.h" | |
11 | |
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12 #if defined(HAVE_WCHAR_H) |
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13 # include <wchar.h> // for towupper() and towlower() |
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14 #endif |
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15 static int win_nolbr_chartabsize(win_T *wp, char_u *s, colnr_T col, int *headp); |
7 | 16 |
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17 static unsigned nr2hex(unsigned c); |
7 | 18 |
19 static int chartab_initialized = FALSE; | |
20 | |
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21 // b_chartab[] is an array of 32 bytes, each bit representing one of the |
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22 // characters 0-255. |
7 | 23 #define SET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] |= (1 << ((c) & 0x7)) |
24 #define RESET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] &= ~(1 << ((c) & 0x7)) | |
25 #define GET_CHARTAB(buf, c) ((buf)->b_chartab[(unsigned)(c) >> 3] & (1 << ((c) & 0x7))) | |
26 | |
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27 // table used below, see init_chartab() for an explanation |
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28 static char_u g_chartab[256]; |
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29 |
7 | 30 /* |
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31 * Flags for g_chartab[]. |
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32 */ |
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33 #define CT_CELL_MASK 0x07 // mask: nr of display cells (1, 2 or 4) |
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34 #define CT_PRINT_CHAR 0x10 // flag: set for printable chars |
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35 #define CT_ID_CHAR 0x20 // flag: set for ID chars |
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36 #define CT_FNAME_CHAR 0x40 // flag: set for file name chars |
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37 |
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38 static int in_win_border(win_T *wp, colnr_T vcol); |
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39 |
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40 /* |
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41 * Fill g_chartab[]. Also fills curbuf->b_chartab[] with flags for keyword |
7 | 42 * characters for current buffer. |
43 * | |
44 * Depends on the option settings 'iskeyword', 'isident', 'isfname', | |
45 * 'isprint' and 'encoding'. | |
46 * | |
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47 * The index in g_chartab[] depends on 'encoding': |
7 | 48 * - For non-multi-byte index with the byte (same as the character). |
49 * - For DBCS index with the first byte. | |
50 * - For UTF-8 index with the character (when first byte is up to 0x80 it is | |
51 * the same as the character, if the first byte is 0x80 and above it depends | |
52 * on further bytes). | |
53 * | |
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54 * The contents of g_chartab[]: |
7 | 55 * - The lower two bits, masked by CT_CELL_MASK, give the number of display |
56 * cells the character occupies (1 or 2). Not valid for UTF-8 above 0x80. | |
57 * - CT_PRINT_CHAR bit is set when the character is printable (no need to | |
58 * translate the character before displaying it). Note that only DBCS | |
59 * characters can have 2 display cells and still be printable. | |
60 * - CT_FNAME_CHAR bit is set when the character can be in a file name. | |
61 * - CT_ID_CHAR bit is set when the character can be in an identifier. | |
62 * | |
63 * Return FAIL if 'iskeyword', 'isident', 'isfname' or 'isprint' option has an | |
64 * error, OK otherwise. | |
65 */ | |
66 int | |
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67 init_chartab(void) |
7 | 68 { |
69 return buf_init_chartab(curbuf, TRUE); | |
70 } | |
71 | |
72 int | |
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73 buf_init_chartab( |
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74 buf_T *buf, |
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75 int global) // FALSE: only set buf->b_chartab[] |
7 | 76 { |
77 int c; | |
78 int c2; | |
79 char_u *p; | |
80 int i; | |
81 int tilde; | |
82 int do_isalpha; | |
83 | |
84 if (global) | |
85 { | |
86 /* | |
87 * Set the default size for printable characters: | |
88 * From <Space> to '~' is 1 (printable), others are 2 (not printable). | |
89 * This also inits all 'isident' and 'isfname' flags to FALSE. | |
90 */ | |
91 c = 0; | |
92 while (c < ' ') | |
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93 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
7 | 94 while (c <= '~') |
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95 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
7 | 96 while (c < 256) |
97 { | |
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98 // UTF-8: bytes 0xa0 - 0xff are printable (latin1) |
7 | 99 if (enc_utf8 && c >= 0xa0) |
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100 g_chartab[c++] = CT_PRINT_CHAR + 1; |
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101 // euc-jp characters starting with 0x8e are single width |
7 | 102 else if (enc_dbcs == DBCS_JPNU && c == 0x8e) |
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103 g_chartab[c++] = CT_PRINT_CHAR + 1; |
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104 // other double-byte chars can be printable AND double-width |
7 | 105 else if (enc_dbcs != 0 && MB_BYTE2LEN(c) == 2) |
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106 g_chartab[c++] = CT_PRINT_CHAR + 2; |
7 | 107 else |
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108 // the rest is unprintable by default |
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109 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
7 | 110 } |
111 | |
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112 // Assume that every multi-byte char is a filename character. |
7 | 113 for (c = 1; c < 256; ++c) |
114 if ((enc_dbcs != 0 && MB_BYTE2LEN(c) > 1) | |
115 || (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
116 || (enc_utf8 && c >= 0xa0)) | |
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117 g_chartab[c] |= CT_FNAME_CHAR; |
7 | 118 } |
119 | |
120 /* | |
121 * Init word char flags all to FALSE | |
122 */ | |
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123 CLEAR_FIELD(buf->b_chartab); |
227 | 124 if (enc_dbcs != 0) |
125 for (c = 0; c < 256; ++c) | |
126 { | |
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127 // double-byte characters are probably word characters |
227 | 128 if (MB_BYTE2LEN(c) == 2) |
129 SET_CHARTAB(buf, c); | |
130 } | |
7 | 131 |
132 /* | |
133 * In lisp mode the '-' character is included in keywords. | |
134 */ | |
135 if (buf->b_p_lisp) | |
136 SET_CHARTAB(buf, '-'); | |
137 | |
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138 // Walk through the 'isident', 'iskeyword', 'isfname' and 'isprint' |
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139 // options Each option is a list of characters, character numbers or |
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140 // ranges, separated by commas, e.g.: "200-210,x,#-178,-" |
7 | 141 for (i = global ? 0 : 3; i <= 3; ++i) |
142 { | |
143 if (i == 0) | |
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144 p = p_isi; // first round: 'isident' |
7 | 145 else if (i == 1) |
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146 p = p_isp; // second round: 'isprint' |
7 | 147 else if (i == 2) |
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148 p = p_isf; // third round: 'isfname' |
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149 else // i == 3 |
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150 p = buf->b_p_isk; // fourth round: 'iskeyword' |
7 | 151 |
152 while (*p) | |
153 { | |
154 tilde = FALSE; | |
155 do_isalpha = FALSE; | |
156 if (*p == '^' && p[1] != NUL) | |
157 { | |
158 tilde = TRUE; | |
159 ++p; | |
160 } | |
161 if (VIM_ISDIGIT(*p)) | |
162 c = getdigits(&p); | |
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163 else if (has_mbyte) |
1955 | 164 c = mb_ptr2char_adv(&p); |
165 else | |
7 | 166 c = *p++; |
167 c2 = -1; | |
168 if (*p == '-' && p[1] != NUL) | |
169 { | |
170 ++p; | |
171 if (VIM_ISDIGIT(*p)) | |
172 c2 = getdigits(&p); | |
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173 else if (has_mbyte) |
1979 | 174 c2 = mb_ptr2char_adv(&p); |
175 else | |
7 | 176 c2 = *p++; |
177 } | |
1979 | 178 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
7 | 179 || !(*p == NUL || *p == ',')) |
180 return FAIL; | |
181 | |
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182 if (c2 == -1) // not a range |
7 | 183 { |
184 /* | |
185 * A single '@' (not "@-@"): | |
186 * Decide on letters being ID/printable/keyword chars with | |
187 * standard function isalpha(). This takes care of locale for | |
188 * single-byte characters). | |
189 */ | |
190 if (c == '@') | |
191 { | |
192 do_isalpha = TRUE; | |
193 c = 1; | |
194 c2 = 255; | |
195 } | |
196 else | |
197 c2 = c; | |
198 } | |
199 while (c <= c2) | |
200 { | |
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201 // Use the MB_ functions here, because isalpha() doesn't |
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202 // work properly when 'encoding' is "latin1" and the locale is |
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203 // "C". |
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204 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c)) |
7 | 205 { |
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206 if (i == 0) // (re)set ID flag |
7 | 207 { |
208 if (tilde) | |
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209 g_chartab[c] &= ~CT_ID_CHAR; |
7 | 210 else |
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211 g_chartab[c] |= CT_ID_CHAR; |
7 | 212 } |
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213 else if (i == 1) // (re)set printable |
7 | 214 { |
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215 if ((c < ' ' || c > '~' |
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216 // For double-byte we keep the cell width, so |
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217 // that we can detect it from the first byte. |
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218 ) && !(enc_dbcs && MB_BYTE2LEN(c) == 2)) |
7 | 219 { |
220 if (tilde) | |
221 { | |
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222 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) |
7 | 223 + ((dy_flags & DY_UHEX) ? 4 : 2); |
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224 g_chartab[c] &= ~CT_PRINT_CHAR; |
7 | 225 } |
226 else | |
227 { | |
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228 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) + 1; |
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229 g_chartab[c] |= CT_PRINT_CHAR; |
7 | 230 } |
231 } | |
232 } | |
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233 else if (i == 2) // (re)set fname flag |
7 | 234 { |
235 if (tilde) | |
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236 g_chartab[c] &= ~CT_FNAME_CHAR; |
7 | 237 else |
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238 g_chartab[c] |= CT_FNAME_CHAR; |
7 | 239 } |
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240 else // i == 3 (re)set keyword flag |
7 | 241 { |
242 if (tilde) | |
243 RESET_CHARTAB(buf, c); | |
244 else | |
245 SET_CHARTAB(buf, c); | |
246 } | |
247 } | |
248 ++c; | |
249 } | |
4096 | 250 |
251 c = *p; | |
7 | 252 p = skip_to_option_part(p); |
4096 | 253 if (c == ',' && *p == NUL) |
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254 // Trailing comma is not allowed. |
4096 | 255 return FAIL; |
7 | 256 } |
257 } | |
258 chartab_initialized = TRUE; | |
259 return OK; | |
260 } | |
261 | |
262 /* | |
263 * Translate any special characters in buf[bufsize] in-place. | |
264 * The result is a string with only printable characters, but if there is not | |
265 * enough room, not all characters will be translated. | |
266 */ | |
267 void | |
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268 trans_characters( |
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269 char_u *buf, |
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270 int bufsize) |
7 | 271 { |
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272 int len; // length of string needing translation |
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273 int room; // room in buffer after string |
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274 char_u *trs; // translated character |
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275 int trs_len; // length of trs[] |
7 | 276 |
277 len = (int)STRLEN(buf); | |
278 room = bufsize - len; | |
279 while (*buf != 0) | |
280 { | |
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281 // Assume a multi-byte character doesn't need translation. |
474 | 282 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
7 | 283 len -= trs_len; |
284 else | |
285 { | |
286 trs = transchar_byte(*buf); | |
287 trs_len = (int)STRLEN(trs); | |
288 if (trs_len > 1) | |
289 { | |
290 room -= trs_len - 1; | |
291 if (room <= 0) | |
292 return; | |
293 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
294 } | |
295 mch_memmove(buf, trs, (size_t)trs_len); | |
296 --len; | |
297 } | |
298 buf += trs_len; | |
299 } | |
300 } | |
301 | |
302 /* | |
303 * Translate a string into allocated memory, replacing special chars with | |
304 * printable chars. Returns NULL when out of memory. | |
305 */ | |
306 char_u * | |
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307 transstr(char_u *s) |
7 | 308 { |
309 char_u *res; | |
310 char_u *p; | |
311 int l, len, c; | |
312 char_u hexbuf[11]; | |
313 | |
314 if (has_mbyte) | |
315 { | |
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316 // Compute the length of the result, taking account of unprintable |
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317 // multi-byte characters. |
7 | 318 len = 0; |
319 p = s; | |
320 while (*p != NUL) | |
321 { | |
474 | 322 if ((l = (*mb_ptr2len)(p)) > 1) |
7 | 323 { |
324 c = (*mb_ptr2char)(p); | |
325 p += l; | |
326 if (vim_isprintc(c)) | |
327 len += l; | |
328 else | |
329 { | |
330 transchar_hex(hexbuf, c); | |
835 | 331 len += (int)STRLEN(hexbuf); |
7 | 332 } |
333 } | |
334 else | |
335 { | |
336 l = byte2cells(*p++); | |
337 if (l > 0) | |
338 len += l; | |
339 else | |
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340 len += 4; // illegal byte sequence |
7 | 341 } |
342 } | |
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343 res = alloc(len + 1); |
7 | 344 } |
345 else | |
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346 res = alloc(vim_strsize(s) + 1); |
7 | 347 if (res != NULL) |
348 { | |
349 *res = NUL; | |
350 p = s; | |
351 while (*p != NUL) | |
352 { | |
474 | 353 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
7 | 354 { |
355 c = (*mb_ptr2char)(p); | |
356 if (vim_isprintc(c)) | |
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357 STRNCAT(res, p, l); // append printable multi-byte char |
7 | 358 else |
359 transchar_hex(res + STRLEN(res), c); | |
360 p += l; | |
361 } | |
362 else | |
363 STRCAT(res, transchar_byte(*p++)); | |
364 } | |
365 } | |
366 return res; | |
367 } | |
368 | |
369 /* | |
221 | 370 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
371 * current locale. | |
130 | 372 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
373 * Otherwise puts the result in "buf[buflen]". | |
7 | 374 */ |
375 char_u * | |
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376 str_foldcase( |
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377 char_u *str, |
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378 int orglen, |
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379 char_u *buf, |
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380 int buflen) |
7 | 381 { |
382 garray_T ga; | |
383 int i; | |
130 | 384 int len = orglen; |
7 | 385 |
386 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
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387 #define GA_PTR(i) ((char_u *)ga.ga_data + (i)) |
130 | 388 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
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389 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + (i)) |
7 | 390 |
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391 // Copy "str" into "buf" or allocated memory, unmodified. |
130 | 392 if (buf == NULL) |
393 { | |
394 ga_init2(&ga, 1, 10); | |
395 if (ga_grow(&ga, len + 1) == FAIL) | |
396 return NULL; | |
397 mch_memmove(ga.ga_data, str, (size_t)len); | |
398 ga.ga_len = len; | |
399 } | |
400 else | |
401 { | |
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402 if (len >= buflen) // Ugly! |
130 | 403 len = buflen - 1; |
404 mch_memmove(buf, str, (size_t)len); | |
405 } | |
406 if (buf == NULL) | |
407 GA_CHAR(len) = NUL; | |
408 else | |
409 buf[len] = NUL; | |
7 | 410 |
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411 // Make each character lower case. |
7 | 412 i = 0; |
130 | 413 while (STR_CHAR(i) != NUL) |
7 | 414 { |
130 | 415 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
7 | 416 { |
417 if (enc_utf8) | |
418 { | |
1654 | 419 int c = utf_ptr2char(STR_PTR(i)); |
3263 | 420 int olen = utf_ptr2len(STR_PTR(i)); |
1654 | 421 int lc = utf_tolower(c); |
7 | 422 |
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423 // Only replace the character when it is not an invalid |
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424 // sequence (ASCII character or more than one byte) and |
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425 // utf_tolower() doesn't return the original character. |
3263 | 426 if ((c < 0x80 || olen > 1) && c != lc) |
7 | 427 { |
3263 | 428 int nlen = utf_char2len(lc); |
7 | 429 |
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430 // If the byte length changes need to shift the following |
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431 // characters forward or backward. |
3263 | 432 if (olen != nlen) |
7 | 433 { |
3263 | 434 if (nlen > olen) |
130 | 435 { |
3263 | 436 if (buf == NULL |
437 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
438 : len + nlen - olen >= buflen) | |
7 | 439 { |
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440 // out of memory, keep old char |
7 | 441 lc = c; |
3263 | 442 nlen = olen; |
7 | 443 } |
130 | 444 } |
3263 | 445 if (olen != nlen) |
7 | 446 { |
130 | 447 if (buf == NULL) |
448 { | |
3263 | 449 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
450 ga.ga_len += nlen - olen; | |
130 | 451 } |
452 else | |
453 { | |
3263 | 454 STRMOVE(buf + i + nlen, buf + i + olen); |
455 len += nlen - olen; | |
130 | 456 } |
7 | 457 } |
458 } | |
130 | 459 (void)utf_char2bytes(lc, STR_PTR(i)); |
7 | 460 } |
461 } | |
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462 // skip to next multi-byte char |
474 | 463 i += (*mb_ptr2len)(STR_PTR(i)); |
7 | 464 } |
465 else | |
466 { | |
130 | 467 if (buf == NULL) |
468 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
469 else | |
470 buf[i] = TOLOWER_LOC(buf[i]); | |
7 | 471 ++i; |
472 } | |
473 } | |
474 | |
130 | 475 if (buf == NULL) |
476 return (char_u *)ga.ga_data; | |
477 return buf; | |
7 | 478 } |
479 | |
480 /* | |
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481 * Catch 22: g_chartab[] can't be initialized before the options are |
7 | 482 * initialized, and initializing options may cause transchar() to be called! |
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483 * When chartab_initialized == FALSE don't use g_chartab[]. |
7 | 484 * Does NOT work for multi-byte characters, c must be <= 255. |
485 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
486 * character! | |
487 */ | |
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488 static char_u transchar_charbuf[7]; |
7 | 489 |
490 char_u * | |
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491 transchar(int c) |
7 | 492 { |
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493 return transchar_buf(curbuf, c); |
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494 } |
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495 |
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496 char_u * |
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497 transchar_buf(buf_T *buf, int c) |
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498 { |
7 | 499 int i; |
500 | |
501 i = 0; | |
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502 if (IS_SPECIAL(c)) // special key code, display as ~@ char |
7 | 503 { |
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504 transchar_charbuf[0] = '~'; |
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505 transchar_charbuf[1] = '@'; |
7 | 506 i = 2; |
507 c = K_SECOND(c); | |
508 } | |
509 | |
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510 if ((!chartab_initialized && ((c >= ' ' && c <= '~'))) |
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511 || (c < 256 && vim_isprintc_strict(c))) |
7 | 512 { |
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513 // printable character |
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514 transchar_charbuf[i] = c; |
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515 transchar_charbuf[i + 1] = NUL; |
7 | 516 } |
517 else | |
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518 transchar_nonprint(buf, transchar_charbuf + i, c); |
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519 return transchar_charbuf; |
7 | 520 } |
521 | |
522 /* | |
523 * Like transchar(), but called with a byte instead of a character. Checks | |
524 * for an illegal UTF-8 byte. | |
525 */ | |
526 char_u * | |
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527 transchar_byte(int c) |
7 | 528 { |
529 if (enc_utf8 && c >= 0x80) | |
530 { | |
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531 transchar_nonprint(curbuf, transchar_charbuf, c); |
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532 return transchar_charbuf; |
7 | 533 } |
534 return transchar(c); | |
535 } | |
536 | |
537 /* | |
538 * Convert non-printable character to two or more printable characters in | |
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539 * "buf[]". "charbuf" needs to be able to hold five bytes. |
7 | 540 * Does NOT work for multi-byte characters, c must be <= 255. |
541 */ | |
542 void | |
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543 transchar_nonprint(buf_T *buf, char_u *charbuf, int c) |
7 | 544 { |
545 if (c == NL) | |
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546 c = NUL; // we use newline in place of a NUL |
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547 else if (c == CAR && get_fileformat(buf) == EOL_MAC) |
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548 c = NL; // we use CR in place of NL in this case |
7 | 549 |
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550 if (dy_flags & DY_UHEX) // 'display' has "uhex" |
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551 transchar_hex(charbuf, c); |
7 | 552 |
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553 else if (c <= 0x7f) // 0x00 - 0x1f and 0x7f |
7 | 554 { |
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555 charbuf[0] = '^'; |
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556 charbuf[1] = c ^ 0x40; // DEL displayed as ^? |
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557 charbuf[2] = NUL; |
7 | 558 } |
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559 else if (enc_utf8) |
7 | 560 { |
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561 transchar_hex(charbuf, c); |
7 | 562 } |
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563 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) // 0xa0 - 0xfe |
7 | 564 { |
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565 charbuf[0] = '|'; |
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566 charbuf[1] = c - 0x80; |
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567 charbuf[2] = NUL; |
7 | 568 } |
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569 else // 0x80 - 0x9f and 0xff |
7 | 570 { |
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571 charbuf[0] = '~'; |
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572 charbuf[1] = (c - 0x80) ^ 0x40; // 0xff displayed as ~? |
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573 charbuf[2] = NUL; |
7 | 574 } |
575 } | |
576 | |
577 void | |
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578 transchar_hex(char_u *buf, int c) |
7 | 579 { |
580 int i = 0; | |
581 | |
582 buf[0] = '<'; | |
583 if (c > 255) | |
584 { | |
585 buf[++i] = nr2hex((unsigned)c >> 12); | |
586 buf[++i] = nr2hex((unsigned)c >> 8); | |
587 } | |
588 buf[++i] = nr2hex((unsigned)c >> 4); | |
1869 | 589 buf[++i] = nr2hex((unsigned)c); |
7 | 590 buf[++i] = '>'; |
591 buf[++i] = NUL; | |
592 } | |
593 | |
594 /* | |
595 * Convert the lower 4 bits of byte "c" to its hex character. | |
596 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
597 * function key 1. | |
598 */ | |
1869 | 599 static unsigned |
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600 nr2hex(unsigned c) |
7 | 601 { |
602 if ((c & 0xf) <= 9) | |
603 return (c & 0xf) + '0'; | |
604 return (c & 0xf) - 10 + 'a'; | |
605 } | |
606 | |
607 /* | |
608 * Return number of display cells occupied by byte "b". | |
609 * Caller must make sure 0 <= b <= 255. | |
610 * For multi-byte mode "b" must be the first byte of a character. | |
611 * A TAB is counted as two cells: "^I". | |
612 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
613 * cells depends on further bytes. | |
614 */ | |
615 int | |
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616 byte2cells(int b) |
7 | 617 { |
618 if (enc_utf8 && b >= 0x80) | |
619 return 0; | |
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620 return (g_chartab[b] & CT_CELL_MASK); |
7 | 621 } |
622 | |
623 /* | |
624 * Return number of display cells occupied by character "c". | |
625 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
626 * A TAB is counted as two cells: "^I" or four: "<09>". | |
627 */ | |
628 int | |
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629 char2cells(int c) |
7 | 630 { |
631 if (IS_SPECIAL(c)) | |
632 return char2cells(K_SECOND(c)) + 2; | |
633 if (c >= 0x80) | |
634 { | |
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635 // UTF-8: above 0x80 need to check the value |
7 | 636 if (enc_utf8) |
637 return utf_char2cells(c); | |
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638 // DBCS: double-byte means double-width, except for euc-jp with first |
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639 // byte 0x8e |
7 | 640 if (enc_dbcs != 0 && c >= 0x100) |
641 { | |
642 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
643 return 1; | |
644 return 2; | |
645 } | |
646 } | |
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647 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
7 | 648 } |
649 | |
650 /* | |
651 * Return number of display cells occupied by character at "*p". | |
652 * A TAB is counted as two cells: "^I" or four: "<09>". | |
653 */ | |
654 int | |
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655 ptr2cells(char_u *p) |
7 | 656 { |
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657 // For UTF-8 we need to look at more bytes if the first byte is >= 0x80. |
7 | 658 if (enc_utf8 && *p >= 0x80) |
659 return utf_ptr2cells(p); | |
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660 // For DBCS we can tell the cell count from the first byte. |
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661 return (g_chartab[*p] & CT_CELL_MASK); |
7 | 662 } |
663 | |
664 /* | |
3292 | 665 * Return the number of character cells string "s" will take on the screen, |
7 | 666 * counting TABs as two characters: "^I". |
667 */ | |
668 int | |
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669 vim_strsize(char_u *s) |
7 | 670 { |
671 return vim_strnsize(s, (int)MAXCOL); | |
672 } | |
673 | |
674 /* | |
3292 | 675 * Return the number of character cells string "s[len]" will take on the |
676 * screen, counting TABs as two characters: "^I". | |
7 | 677 */ |
678 int | |
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679 vim_strnsize(char_u *s, int len) |
7 | 680 { |
681 int size = 0; | |
682 | |
683 while (*s != NUL && --len >= 0) | |
684 if (has_mbyte) | |
685 { | |
474 | 686 int l = (*mb_ptr2len)(s); |
7 | 687 |
688 size += ptr2cells(s); | |
689 s += l; | |
690 len -= l - 1; | |
691 } | |
692 else | |
693 size += byte2cells(*s++); | |
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694 |
7 | 695 return size; |
696 } | |
697 | |
698 /* | |
699 * Return the number of characters 'c' will take on the screen, taking | |
700 * into account the size of a tab. | |
701 * Use a define to make it fast, this is used very often!!! | |
702 * Also see getvcol() below. | |
703 */ | |
704 | |
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705 #ifdef FEAT_VARTABS |
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706 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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707 if (*(p) == TAB && (!(wp)->w_p_list || (wp)->w_lcs_chars.tab1)) \ |
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708 { \ |
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709 return tabstop_padding(col, (buf)->b_p_ts, (buf)->b_p_vts_array); \ |
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710 } \ |
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711 else \ |
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712 return ptr2cells(p); |
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713 #else |
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714 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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715 if (*(p) == TAB && (!(wp)->w_p_list || wp->w_lcs_chars.tab1)) \ |
7 | 716 { \ |
717 int ts; \ | |
718 ts = (buf)->b_p_ts; \ | |
719 return (int)(ts - (col % ts)); \ | |
720 } \ | |
721 else \ | |
722 return ptr2cells(p); | |
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723 #endif |
7 | 724 |
725 int | |
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726 chartabsize(char_u *p, colnr_T col) |
7 | 727 { |
728 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
729 } | |
730 | |
731 #ifdef FEAT_LINEBREAK | |
732 static int | |
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733 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
7 | 734 { |
735 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
736 } | |
737 #endif | |
738 | |
739 /* | |
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740 * Return the number of characters the string 's' will take on the screen, |
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741 * taking into account the size of a tab. |
7 | 742 */ |
743 int | |
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744 linetabsize(char_u *s) |
7 | 745 { |
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746 return linetabsize_col(0, s); |
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747 } |
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748 |
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749 /* |
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750 * Like linetabsize(), but starting at column "startcol". |
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751 */ |
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752 int |
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753 linetabsize_col(int startcol, char_u *s) |
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754 { |
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755 colnr_T col = startcol; |
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756 char_u *line = s; // pointer to start of line, for breakindent |
7 | 757 |
758 while (*s != NUL) | |
5995 | 759 col += lbr_chartabsize_adv(line, &s, col); |
7 | 760 return (int)col; |
761 } | |
762 | |
763 /* | |
764 * Like linetabsize(), but for a given window instead of the current one. | |
765 */ | |
766 int | |
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767 win_linetabsize(win_T *wp, char_u *line, colnr_T len) |
7 | 768 { |
769 colnr_T col = 0; | |
770 char_u *s; | |
771 | |
5995 | 772 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
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773 MB_PTR_ADV(s)) |
5995 | 774 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
7 | 775 return (int)col; |
776 } | |
777 | |
778 /* | |
42 | 779 * Return TRUE if 'c' is a normal identifier character: |
780 * Letters and characters from the 'isident' option. | |
7 | 781 */ |
782 int | |
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783 vim_isIDc(int c) |
7 | 784 { |
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785 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
7 | 786 } |
787 | |
788 /* | |
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789 * Like vim_isIDc() but not using the 'isident' option: letters, numbers and |
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790 * underscore. |
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791 */ |
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792 int |
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793 vim_isNormalIDc(int c) |
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794 { |
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795 return ASCII_ISALNUM(c) || c == '_'; |
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796 } |
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797 |
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798 /* |
7 | 799 * return TRUE if 'c' is a keyword character: Letters and characters from |
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800 * 'iskeyword' option for the current buffer. |
7 | 801 * For multi-byte characters mb_get_class() is used (builtin rules). |
802 */ | |
803 int | |
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804 vim_iswordc(int c) |
7 | 805 { |
4043 | 806 return vim_iswordc_buf(c, curbuf); |
807 } | |
808 | |
809 int | |
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810 vim_iswordc_buf(int c, buf_T *buf) |
4043 | 811 { |
7 | 812 if (c >= 0x100) |
813 { | |
814 if (enc_dbcs != 0) | |
1869 | 815 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
7 | 816 if (enc_utf8) |
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817 return utf_class_buf(c, buf) >= 2; |
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818 return FALSE; |
7 | 819 } |
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820 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
7 | 821 } |
822 | |
823 /* | |
824 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
825 */ | |
826 int | |
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827 vim_iswordp(char_u *p) |
7 | 828 { |
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829 return vim_iswordp_buf(p, curbuf); |
7 | 830 } |
831 | |
832 int | |
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833 vim_iswordp_buf(char_u *p, buf_T *buf) |
7 | 834 { |
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835 int c = *p; |
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836 |
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837 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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838 c = (*mb_ptr2char)(p); |
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839 return vim_iswordc_buf(c, buf); |
7 | 840 } |
841 | |
842 /* | |
843 * return TRUE if 'c' is a valid file-name character | |
844 * Assume characters above 0x100 are valid (multi-byte). | |
845 */ | |
846 int | |
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847 vim_isfilec(int c) |
7 | 848 { |
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849 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
7 | 850 } |
851 | |
852 /* | |
1369 | 853 * return TRUE if 'c' is a valid file-name character or a wildcard character |
854 * Assume characters above 0x100 are valid (multi-byte). | |
855 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
856 * returns false. | |
857 */ | |
858 int | |
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859 vim_isfilec_or_wc(int c) |
1369 | 860 { |
861 char_u buf[2]; | |
862 | |
863 buf[0] = (char_u)c; | |
864 buf[1] = NUL; | |
865 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
866 } | |
867 | |
868 /* | |
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869 * Return TRUE if 'c' is a printable character. |
7 | 870 * Assume characters above 0x100 are printable (multi-byte), except for |
871 * Unicode. | |
872 */ | |
873 int | |
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874 vim_isprintc(int c) |
7 | 875 { |
876 if (enc_utf8 && c >= 0x100) | |
877 return utf_printable(c); | |
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878 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 879 } |
880 | |
881 /* | |
882 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
883 * byte of a double-byte character. | |
884 */ | |
885 int | |
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886 vim_isprintc_strict(int c) |
7 | 887 { |
888 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
889 return FALSE; | |
890 if (enc_utf8 && c >= 0x100) | |
891 return utf_printable(c); | |
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892 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 893 } |
894 | |
895 /* | |
896 * like chartabsize(), but also check for line breaks on the screen | |
897 */ | |
898 int | |
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899 lbr_chartabsize( |
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900 char_u *line UNUSED, // start of the line |
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901 unsigned char *s, |
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902 colnr_T col) |
7 | 903 { |
904 #ifdef FEAT_LINEBREAK | |
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905 if (!curwin->w_p_lbr && *get_showbreak_value(curwin) == NUL |
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906 && !curwin->w_p_bri) |
7 | 907 { |
908 #endif | |
909 if (curwin->w_p_wrap) | |
910 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
911 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
912 #ifdef FEAT_LINEBREAK | |
913 } | |
5995 | 914 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
7 | 915 #endif |
916 } | |
917 | |
918 /* | |
919 * Call lbr_chartabsize() and advance the pointer. | |
920 */ | |
921 int | |
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922 lbr_chartabsize_adv( |
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923 char_u *line, // start of the line |
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924 char_u **s, |
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925 colnr_T col) |
7 | 926 { |
927 int retval; | |
928 | |
5995 | 929 retval = lbr_chartabsize(line, *s, col); |
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930 MB_PTR_ADV(*s); |
7 | 931 return retval; |
932 } | |
933 | |
934 /* | |
935 * This function is used very often, keep it fast!!!! | |
936 * | |
937 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
938 * string at start of line. Warning: *headp is only set if it's a non-zero | |
939 * value, init to 0 before calling. | |
940 */ | |
941 int | |
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942 win_lbr_chartabsize( |
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943 win_T *wp, |
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944 char_u *line UNUSED, // start of the line |
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945 char_u *s, |
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946 colnr_T col, |
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947 int *headp UNUSED) |
7 | 948 { |
949 #ifdef FEAT_LINEBREAK | |
950 int c; | |
951 int size; | |
952 colnr_T col2; | |
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953 colnr_T col_adj = 0; // col + screen size of tab |
7 | 954 colnr_T colmax; |
955 int added; | |
956 int mb_added = 0; | |
957 int numberextra; | |
958 char_u *ps; | |
959 int tab_corr = (*s == TAB); | |
236 | 960 int n; |
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961 char_u *sbr; |
7 | 962 |
963 /* | |
5995 | 964 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
7 | 965 */ |
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966 if (!wp->w_p_lbr && !wp->w_p_bri && *get_showbreak_value(wp) == NUL) |
7 | 967 #endif |
968 { | |
969 if (wp->w_p_wrap) | |
970 return win_nolbr_chartabsize(wp, s, col, headp); | |
971 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
972 } | |
973 | |
974 #ifdef FEAT_LINEBREAK | |
975 /* | |
976 * First get normal size, without 'linebreak' | |
977 */ | |
978 size = win_chartabsize(wp, s, col); | |
979 c = *s; | |
6024 | 980 if (tab_corr) |
981 col_adj = size - 1; | |
7 | 982 |
983 /* | |
984 * If 'linebreak' set check at a blank before a non-blank if the line | |
985 * needs a break here | |
986 */ | |
987 if (wp->w_p_lbr | |
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988 && VIM_ISBREAK(c) |
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989 && !VIM_ISBREAK((int)s[1]) |
7 | 990 && wp->w_p_wrap |
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991 && wp->w_width != 0) |
7 | 992 { |
993 /* | |
994 * Count all characters from first non-blank after a blank up to next | |
995 * non-blank after a blank. | |
996 */ | |
997 numberextra = win_col_off(wp); | |
998 col2 = col; | |
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999 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
7 | 1000 if (col >= colmax) |
236 | 1001 { |
6024 | 1002 colmax += col_adj; |
1003 n = colmax + win_col_off2(wp); | |
236 | 1004 if (n > 0) |
6024 | 1005 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
236 | 1006 } |
1007 | |
7 | 1008 for (;;) |
1009 { | |
1010 ps = s; | |
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1011 MB_PTR_ADV(s); |
7 | 1012 c = *s; |
1013 if (!(c != NUL | |
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1014 && (VIM_ISBREAK(c) |
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1015 || (!VIM_ISBREAK(c) |
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1016 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
7 | 1017 break; |
1018 | |
1019 col2 += win_chartabsize(wp, s, col2); | |
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1020 if (col2 >= colmax) // doesn't fit |
7 | 1021 { |
6024 | 1022 size = colmax - col + col_adj; |
7 | 1023 break; |
1024 } | |
1025 } | |
1026 } | |
1027 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
1028 && wp->w_p_wrap && in_win_border(wp, col)) | |
1029 { | |
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1030 ++size; // Count the ">" in the last column. |
7 | 1031 mb_added = 1; |
1032 } | |
1033 | |
1034 /* | |
5995 | 1035 * May have to add something for 'breakindent' and/or 'showbreak' |
1036 * string at start of line. | |
7 | 1037 * Set *headp to the size of what we add. |
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1038 * Do not use 'showbreak' at the NUL after the text. |
7 | 1039 */ |
1040 added = 0; | |
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1041 sbr = c == NUL ? empty_option : get_showbreak_value(wp); |
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1042 if ((*sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
7 | 1043 { |
6503 | 1044 colnr_T sbrlen = 0; |
1045 int numberwidth = win_col_off(wp); | |
1046 | |
1047 numberextra = numberwidth; | |
7 | 1048 col += numberextra + mb_added; |
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1049 if (col >= (colnr_T)wp->w_width) |
7 | 1050 { |
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1051 col -= wp->w_width; |
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1052 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
6503 | 1053 if (col >= numberextra && numberextra > 0) |
6312 | 1054 col %= numberextra; |
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1055 if (*sbr != NUL) |
6288 | 1056 { |
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1057 sbrlen = (colnr_T)MB_CHARLEN(sbr); |
6288 | 1058 if (col >= sbrlen) |
1059 col -= sbrlen; | |
1060 } | |
6503 | 1061 if (col >= numberextra && numberextra > 0) |
7 | 1062 col = col % numberextra; |
6503 | 1063 else if (col > 0 && numberextra > 0) |
1064 col += numberwidth - win_col_off2(wp); | |
1065 | |
1066 numberwidth -= win_col_off2(wp); | |
7 | 1067 } |
12515
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1068 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
7 | 1069 { |
5995 | 1070 added = 0; |
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1071 if (*sbr != NUL) |
6503 | 1072 { |
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1073 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
6503 | 1074 { |
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1075 // calculate effective window width |
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1076 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
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1077 int prev_width = col |
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1078 ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
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1079 |
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1080 if (width <= 0) |
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1081 width = (colnr_T)1; |
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1082 added += ((size - prev_width) / width) * vim_strsize(sbr); |
6503 | 1083 if ((size - prev_width) % width) |
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1084 // wrapped, add another length of 'sbr' |
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1085 added += vim_strsize(sbr); |
6503 | 1086 } |
1087 else | |
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1088 added += vim_strsize(sbr); |
6503 | 1089 } |
5995 | 1090 if (wp->w_p_bri) |
1091 added += get_breakindent_win(wp, line); | |
1092 | |
6160 | 1093 size += added; |
7 | 1094 if (col != 0) |
1095 added = 0; | |
1096 } | |
1097 } | |
1098 if (headp != NULL) | |
1099 *headp = added + mb_added; | |
1100 return size; | |
1101 #endif | |
1102 } | |
1103 | |
1104 /* | |
1105 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
1106 * 'wrap' is on. This means we need to check for a double-byte character that | |
1107 * doesn't fit at the end of the screen line. | |
1108 */ | |
1109 static int | |
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1110 win_nolbr_chartabsize( |
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1111 win_T *wp, |
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1112 char_u *s, |
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1113 colnr_T col, |
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1114 int *headp) |
7 | 1115 { |
1116 int n; | |
1117 | |
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1118 if (*s == TAB && (!wp->w_p_list || wp->w_lcs_chars.tab1)) |
7 | 1119 { |
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1120 # ifdef FEAT_VARTABS |
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1121 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
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1122 wp->w_buffer->b_p_vts_array); |
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1123 # else |
7 | 1124 n = wp->w_buffer->b_p_ts; |
1125 return (int)(n - (col % n)); | |
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1126 # endif |
7 | 1127 } |
1128 n = ptr2cells(s); | |
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1129 // Add one cell for a double-width character in the last column of the |
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1130 // window, displayed with a ">". |
7 | 1131 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) |
1132 { | |
1133 if (headp != NULL) | |
1134 *headp = 1; | |
1135 return 3; | |
1136 } | |
1137 return n; | |
1138 } | |
1139 | |
1140 /* | |
1141 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
1142 * "wp". | |
1143 */ | |
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1144 static int |
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1145 in_win_border(win_T *wp, colnr_T vcol) |
7 | 1146 { |
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1147 int width1; // width of first line (after line number) |
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1148 int width2; // width of further lines |
7 | 1149 |
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1150 if (wp->w_width == 0) // there is no border |
7 | 1151 return FALSE; |
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1152 width1 = wp->w_width - win_col_off(wp); |
1869 | 1153 if ((int)vcol < width1 - 1) |
7 | 1154 return FALSE; |
1869 | 1155 if ((int)vcol == width1 - 1) |
7 | 1156 return TRUE; |
1157 width2 = width1 + win_col_off2(wp); | |
1970 | 1158 if (width2 <= 0) |
1159 return FALSE; | |
7 | 1160 return ((vcol - width1) % width2 == width2 - 1); |
1161 } | |
1162 | |
1163 /* | |
1164 * Get virtual column number of pos. | |
1165 * start: on the first position of this character (TAB, ctrl) | |
1166 * cursor: where the cursor is on this character (first char, except for TAB) | |
1167 * end: on the last position of this character (TAB, ctrl) | |
1168 * | |
1169 * This is used very often, keep it fast! | |
1170 */ | |
1171 void | |
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1172 getvcol( |
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1173 win_T *wp, |
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1174 pos_T *pos, |
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1175 colnr_T *start, |
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1176 colnr_T *cursor, |
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1177 colnr_T *end) |
7 | 1178 { |
1179 colnr_T vcol; | |
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1180 char_u *ptr; // points to current char |
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1181 char_u *posptr; // points to char at pos->col |
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1182 char_u *line; // start of the line |
7 | 1183 int incr; |
1184 int head; | |
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1185 #ifdef FEAT_VARTABS |
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1186 int *vts = wp->w_buffer->b_p_vts_array; |
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1187 #endif |
7 | 1188 int ts = wp->w_buffer->b_p_ts; |
1189 int c; | |
1190 | |
1191 vcol = 0; | |
5995 | 1192 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
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1193 if (pos->col == MAXCOL) |
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1194 posptr = NULL; // continue until the NUL |
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1195 else |
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1196 { |
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1197 colnr_T i; |
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1198 |
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1199 // In a few cases the position can be beyond the end of the line. |
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1200 for (i = 0; i < pos->col; ++i) |
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1201 if (ptr[i] == NUL) |
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1202 { |
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1203 pos->col = i; |
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1204 break; |
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1205 } |
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1206 posptr = ptr + pos->col; |
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1207 if (has_mbyte) |
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1208 // always start on the first byte |
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1209 posptr -= (*mb_head_off)(line, posptr); |
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1210 } |
7 | 1211 |
1212 /* | |
1213 * This function is used very often, do some speed optimizations. | |
5995 | 1214 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
1215 * use a simple loop. | |
7 | 1216 * Also use this when 'list' is set but tabs take their normal size. |
1217 */ | |
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1218 if ((!wp->w_p_list || wp->w_lcs_chars.tab1 != NUL) |
7 | 1219 #ifdef FEAT_LINEBREAK |
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1220 && !wp->w_p_lbr && *get_showbreak_value(wp) == NUL && !wp->w_p_bri |
7 | 1221 #endif |
1222 ) | |
1223 { | |
1224 for (;;) | |
1225 { | |
1226 head = 0; | |
1227 c = *ptr; | |
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1228 // make sure we don't go past the end of the line |
7 | 1229 if (c == NUL) |
1230 { | |
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1231 incr = 1; // NUL at end of line only takes one column |
7 | 1232 break; |
1233 } | |
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1234 // A tab gets expanded, depending on the current column |
7 | 1235 if (c == TAB) |
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1236 #ifdef FEAT_VARTABS |
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1237 incr = tabstop_padding(vcol, ts, vts); |
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1238 #else |
7 | 1239 incr = ts - (vcol % ts); |
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1240 #endif |
7 | 1241 else |
1242 { | |
1243 if (has_mbyte) | |
1244 { | |
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1245 // For utf-8, if the byte is >= 0x80, need to look at |
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1246 // further bytes to find the cell width. |
7 | 1247 if (enc_utf8 && c >= 0x80) |
1248 incr = utf_ptr2cells(ptr); | |
1249 else | |
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1250 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1251 |
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1252 // If a double-cell char doesn't fit at the end of a line |
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1253 // it wraps to the next line, it's like this char is three |
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1254 // cells wide. |
1546 | 1255 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
1256 && in_win_border(wp, vcol)) | |
7 | 1257 { |
1258 ++incr; | |
1259 head = 1; | |
1260 } | |
1261 } | |
1262 else | |
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1263 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1264 } |
1265 | |
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1266 if (posptr != NULL && ptr >= posptr) // character at pos->col |
7 | 1267 break; |
1268 | |
1269 vcol += incr; | |
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1270 MB_PTR_ADV(ptr); |
7 | 1271 } |
1272 } | |
1273 else | |
1274 { | |
1275 for (;;) | |
1276 { | |
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1277 // A tab gets expanded, depending on the current column |
7 | 1278 head = 0; |
5995 | 1279 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
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1280 // make sure we don't go past the end of the line |
7 | 1281 if (*ptr == NUL) |
1282 { | |
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1283 incr = 1; // NUL at end of line only takes one column |
7 | 1284 break; |
1285 } | |
1286 | |
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|
1287 if (posptr != NULL && ptr >= posptr) // character at pos->col |
7 | 1288 break; |
1289 | |
1290 vcol += incr; | |
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|
1291 MB_PTR_ADV(ptr); |
7 | 1292 } |
1293 } | |
1294 if (start != NULL) | |
1295 *start = vcol + head; | |
1296 if (end != NULL) | |
1297 *end = vcol + incr - 1; | |
1298 if (cursor != NULL) | |
1299 { | |
1300 if (*ptr == TAB | |
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|
1301 && (State & MODE_NORMAL) |
7 | 1302 && !wp->w_p_list |
1303 && !virtual_active() | |
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1304 && !(VIsual_active |
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|
1305 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
7 | 1306 ) |
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1307 *cursor = vcol + incr - 1; // cursor at end |
7 | 1308 else |
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|
1309 *cursor = vcol + head; // cursor at start |
7 | 1310 } |
1311 } | |
1312 | |
1313 /* | |
1314 * Get virtual cursor column in the current window, pretending 'list' is off. | |
1315 */ | |
1316 colnr_T | |
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|
1317 getvcol_nolist(pos_T *posp) |
7 | 1318 { |
1319 int list_save = curwin->w_p_list; | |
1320 colnr_T vcol; | |
1321 | |
1322 curwin->w_p_list = FALSE; | |
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|
1323 if (posp->coladd) |
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|
1324 getvvcol(curwin, posp, NULL, &vcol, NULL); |
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|
1325 else |
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|
1326 getvcol(curwin, posp, NULL, &vcol, NULL); |
7 | 1327 curwin->w_p_list = list_save; |
1328 return vcol; | |
1329 } | |
1330 | |
1331 /* | |
1332 * Get virtual column in virtual mode. | |
1333 */ | |
1334 void | |
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1335 getvvcol( |
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|
1336 win_T *wp, |
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|
1337 pos_T *pos, |
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|
1338 colnr_T *start, |
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|
1339 colnr_T *cursor, |
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|
1340 colnr_T *end) |
7 | 1341 { |
1342 colnr_T col; | |
1343 colnr_T coladd; | |
1344 colnr_T endadd; | |
1345 char_u *ptr; | |
1346 | |
1347 if (virtual_active()) | |
1348 { | |
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|
1349 // For virtual mode, only want one value |
7 | 1350 getvcol(wp, pos, &col, NULL, NULL); |
1351 | |
1352 coladd = pos->coladd; | |
1353 endadd = 0; | |
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|
1354 // Cannot put the cursor on part of a wide character. |
7 | 1355 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
1869 | 1356 if (pos->col < (colnr_T)STRLEN(ptr)) |
7 | 1357 { |
1358 int c = (*mb_ptr2char)(ptr + pos->col); | |
1359 | |
1360 if (c != TAB && vim_isprintc(c)) | |
1361 { | |
1869 | 1362 endadd = (colnr_T)(char2cells(c) - 1); |
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|
1363 if (coladd > endadd) // past end of line |
557 | 1364 endadd = 0; |
7 | 1365 else |
1366 coladd = 0; | |
1367 } | |
1368 } | |
1369 col += coladd; | |
1370 if (start != NULL) | |
1371 *start = col; | |
1372 if (cursor != NULL) | |
1373 *cursor = col; | |
1374 if (end != NULL) | |
1375 *end = col + endadd; | |
1376 } | |
1377 else | |
1378 getvcol(wp, pos, start, cursor, end); | |
1379 } | |
1380 | |
1381 /* | |
1382 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
1383 * Used for Visual block mode. | |
1384 */ | |
1385 void | |
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|
1386 getvcols( |
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|
1387 win_T *wp, |
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|
1388 pos_T *pos1, |
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|
1389 pos_T *pos2, |
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|
1390 colnr_T *left, |
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|
1391 colnr_T *right) |
7 | 1392 { |
1393 colnr_T from1, from2, to1, to2; | |
1394 | |
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|
1395 if (LT_POSP(pos1, pos2)) |
7 | 1396 { |
1397 getvvcol(wp, pos1, &from1, NULL, &to1); | |
1398 getvvcol(wp, pos2, &from2, NULL, &to2); | |
1399 } | |
1400 else | |
1401 { | |
1402 getvvcol(wp, pos2, &from1, NULL, &to1); | |
1403 getvvcol(wp, pos1, &from2, NULL, &to2); | |
1404 } | |
1405 if (from2 < from1) | |
1406 *left = from2; | |
1407 else | |
1408 *left = from1; | |
1409 if (to2 > to1) | |
1410 { | |
1411 if (*p_sel == 'e' && from2 - 1 >= to1) | |
1412 *right = from2 - 1; | |
1413 else | |
1414 *right = to2; | |
1415 } | |
1416 else | |
1417 *right = to1; | |
1418 } | |
1419 | |
1420 /* | |
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|
1421 * Skip over ' ' and '\t'. |
7 | 1422 */ |
1423 char_u * | |
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1424 skipwhite(char_u *q) |
7 | 1425 { |
1687 | 1426 char_u *p = q; |
1427 | |
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|
1428 while (VIM_ISWHITE(*p)) |
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|
1429 ++p; |
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|
1430 return p; |
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1431 } |
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1432 |
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|
1433 #if defined(FEAT_EVAL) || defined(PROTO) |
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1434 /* |
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|
1435 * skip over ' ', '\t' and '\n'. |
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1436 */ |
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1437 char_u * |
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|
1438 skipwhite_and_nl(char_u *q) |
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1439 { |
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|
1440 char_u *p = q; |
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1441 |
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|
1442 while (VIM_ISWHITE(*p) || *p == NL) |
7 | 1443 ++p; |
1444 return p; | |
1445 } | |
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|
1446 #endif |
7 | 1447 |
1448 /* | |
12323
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|
1449 * getwhitecols: return the number of whitespace |
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1450 * columns (bytes) at the start of a given line |
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1451 */ |
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1452 int |
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|
1453 getwhitecols_curline() |
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1454 { |
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1455 return getwhitecols(ml_get_curline()); |
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1456 } |
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1457 |
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1458 int |
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1459 getwhitecols(char_u *p) |
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1460 { |
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|
1461 return skipwhite(p) - p; |
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1462 } |
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1463 |
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1464 /* |
293 | 1465 * skip over digits |
7 | 1466 */ |
1467 char_u * | |
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1468 skipdigits(char_u *q) |
7 | 1469 { |
1687 | 1470 char_u *p = q; |
1471 | |
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|
1472 while (VIM_ISDIGIT(*p)) // skip to next non-digit |
7 | 1473 ++p; |
1474 return p; | |
1475 } | |
1476 | |
741 | 1477 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
301 | 1478 /* |
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1479 * skip over binary digits |
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1480 */ |
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1481 char_u * |
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|
1482 skipbin(char_u *q) |
7447
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1483 { |
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1484 char_u *p = q; |
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1485 |
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1486 while (vim_isbdigit(*p)) // skip to next non-digit |
7447
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1487 ++p; |
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1488 return p; |
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1489 } |
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1490 |
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changeset
|
1491 /* |
301 | 1492 * skip over digits and hex characters |
1493 */ | |
1494 char_u * | |
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1495 skiphex(char_u *q) |
301 | 1496 { |
1687 | 1497 char_u *p = q; |
1498 | |
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1499 while (vim_isxdigit(*p)) // skip to next non-digit |
301 | 1500 ++p; |
1501 return p; | |
1502 } | |
1503 #endif | |
1504 | |
293 | 1505 /* |
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1506 * skip to bin digit (or NUL after the string) |
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1507 */ |
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1508 char_u * |
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1509 skiptobin(char_u *q) |
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1510 { |
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1511 char_u *p = q; |
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1512 |
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1513 while (*p != NUL && !vim_isbdigit(*p)) // skip to next digit |
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1514 ++p; |
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1515 return p; |
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1516 } |
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1517 |
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1518 /* |
293 | 1519 * skip to digit (or NUL after the string) |
1520 */ | |
1521 char_u * | |
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1522 skiptodigit(char_u *q) |
293 | 1523 { |
1687 | 1524 char_u *p = q; |
1525 | |
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1526 while (*p != NUL && !VIM_ISDIGIT(*p)) // skip to next digit |
293 | 1527 ++p; |
1528 return p; | |
1529 } | |
1530 | |
1531 /* | |
1532 * skip to hex character (or NUL after the string) | |
1533 */ | |
1534 char_u * | |
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1535 skiptohex(char_u *q) |
293 | 1536 { |
1687 | 1537 char_u *p = q; |
1538 | |
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1539 while (*p != NUL && !vim_isxdigit(*p)) // skip to next digit |
293 | 1540 ++p; |
1541 return p; | |
1542 } | |
1543 | |
7 | 1544 /* |
1545 * Variant of isdigit() that can handle characters > 0x100. | |
1546 * We don't use isdigit() here, because on some systems it also considers | |
1547 * superscript 1 to be a digit. | |
1548 * Use the VIM_ISDIGIT() macro for simple arguments. | |
1549 */ | |
1550 int | |
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1551 vim_isdigit(int c) |
7 | 1552 { |
1553 return (c >= '0' && c <= '9'); | |
1554 } | |
1555 | |
1556 /* | |
1557 * Variant of isxdigit() that can handle characters > 0x100. | |
1558 * We don't use isxdigit() here, because on some systems it also considers | |
1559 * superscript 1 to be a digit. | |
1560 */ | |
1561 int | |
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1562 vim_isxdigit(int c) |
7 | 1563 { |
1564 return (c >= '0' && c <= '9') | |
1565 || (c >= 'a' && c <= 'f') | |
1566 || (c >= 'A' && c <= 'F'); | |
1567 } | |
1568 | |
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1569 /* |
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1570 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1571 * characters > 0x100. |
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1572 */ |
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1573 int |
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1574 vim_isbdigit(int c) |
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1575 { |
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1576 return (c == '0' || c == '1'); |
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1577 } |
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1578 |
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1579 static int |
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1580 vim_isodigit(int c) |
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1581 { |
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1582 return (c >= '0' && c <= '7'); |
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1583 } |
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1584 |
492 | 1585 /* |
1586 * Vim's own character class functions. These exist because many library | |
1587 * islower()/toupper() etc. do not work properly: they crash when used with | |
1588 * invalid values or can't handle latin1 when the locale is C. | |
1589 * Speed is most important here. | |
1590 */ | |
1591 #define LATIN1LOWER 'l' | |
1592 #define LATIN1UPPER 'U' | |
1593 | |
497 | 1594 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
3533 | 1595 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
1596 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1597 |
1598 int | |
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1599 vim_islower(int c) |
492 | 1600 { |
1601 if (c <= '@') | |
1602 return FALSE; | |
1603 if (c >= 0x80) | |
1604 { | |
1605 if (enc_utf8) | |
1606 return utf_islower(c); | |
1607 if (c >= 0x100) | |
1608 { | |
1609 #ifdef HAVE_ISWLOWER | |
1610 if (has_mbyte) | |
1611 return iswlower(c); | |
1612 #endif | |
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1613 // islower() can't handle these chars and may crash |
492 | 1614 return FALSE; |
1615 } | |
1616 if (enc_latin1like) | |
1617 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
1618 } | |
1619 return islower(c); | |
1620 } | |
1621 | |
1622 int | |
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1623 vim_isupper(int c) |
492 | 1624 { |
1625 if (c <= '@') | |
1626 return FALSE; | |
1627 if (c >= 0x80) | |
1628 { | |
1629 if (enc_utf8) | |
1630 return utf_isupper(c); | |
1631 if (c >= 0x100) | |
1632 { | |
1633 #ifdef HAVE_ISWUPPER | |
1634 if (has_mbyte) | |
1635 return iswupper(c); | |
1636 #endif | |
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1637 // islower() can't handle these chars and may crash |
492 | 1638 return FALSE; |
1639 } | |
1640 if (enc_latin1like) | |
1641 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
1642 } | |
1643 return isupper(c); | |
1644 } | |
1645 | |
1646 int | |
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1647 vim_isalpha(int c) |
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1648 { |
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1649 return vim_islower(c) || vim_isupper(c); |
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1650 } |
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1651 |
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1652 int |
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1653 vim_toupper(int c) |
492 | 1654 { |
1655 if (c <= '@') | |
1656 return c; | |
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1657 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1658 { |
1659 if (enc_utf8) | |
1660 return utf_toupper(c); | |
1661 if (c >= 0x100) | |
1662 { | |
1663 #ifdef HAVE_TOWUPPER | |
1664 if (has_mbyte) | |
1665 return towupper(c); | |
1666 #endif | |
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1667 // toupper() can't handle these chars and may crash |
492 | 1668 return c; |
1669 } | |
1670 if (enc_latin1like) | |
1671 return latin1upper[c]; | |
1672 } | |
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1673 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1674 return TOUPPER_ASC(c); |
492 | 1675 return TOUPPER_LOC(c); |
1676 } | |
1677 | |
1678 int | |
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1679 vim_tolower(int c) |
492 | 1680 { |
1681 if (c <= '@') | |
1682 return c; | |
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1683 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1684 { |
1685 if (enc_utf8) | |
1686 return utf_tolower(c); | |
1687 if (c >= 0x100) | |
1688 { | |
1689 #ifdef HAVE_TOWLOWER | |
1690 if (has_mbyte) | |
1691 return towlower(c); | |
1692 #endif | |
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1693 // tolower() can't handle these chars and may crash |
492 | 1694 return c; |
1695 } | |
1696 if (enc_latin1like) | |
1697 return latin1lower[c]; | |
1698 } | |
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1699 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1700 return TOLOWER_ASC(c); |
492 | 1701 return TOLOWER_LOC(c); |
1702 } | |
1703 | |
7 | 1704 /* |
1705 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
1706 */ | |
1707 char_u * | |
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1708 skiptowhite(char_u *p) |
7 | 1709 { |
1710 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1711 ++p; | |
1712 return p; | |
1713 } | |
1714 | |
1715 /* | |
1716 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
1717 */ | |
1718 char_u * | |
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1719 skiptowhite_esc(char_u *p) |
7 | 1720 { |
1721 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1722 { | |
1723 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
1724 ++p; | |
1725 ++p; | |
1726 } | |
1727 return p; | |
1728 } | |
1729 | |
1730 /* | |
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1731 * Get a number from a string and skip over it. |
7 | 1732 * Note: the argument is a pointer to a char_u pointer! |
1733 */ | |
1734 long | |
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|
1735 getdigits(char_u **pp) |
7 | 1736 { |
1737 char_u *p; | |
1738 long retval; | |
1739 | |
1740 p = *pp; | |
1741 retval = atol((char *)p); | |
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1742 if (*p == '-') // skip negative sign |
7 | 1743 ++p; |
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|
1744 p = skipdigits(p); // skip to next non-digit |
7 | 1745 *pp = p; |
1746 return retval; | |
1747 } | |
1748 | |
1749 /* | |
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1750 * Like getdigits() but allow for embedded single quotes. |
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1751 */ |
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1752 long |
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|
1753 getdigits_quoted(char_u **pp) |
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1754 { |
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|
1755 char_u *p = *pp; |
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1756 long retval = 0; |
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|
1757 |
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|
1758 if (*p == '-') |
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|
1759 ++p; |
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|
1760 while (VIM_ISDIGIT(*p)) |
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1761 { |
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|
1762 if (retval >= LONG_MAX / 10 - 10) |
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|
1763 retval = LONG_MAX; |
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1764 else |
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1765 retval = retval * 10 - '0' + *p; |
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1766 ++p; |
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1767 if (in_vim9script() && *p == '\'' && VIM_ISDIGIT(p[1])) |
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1768 ++p; |
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1769 } |
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1770 if (**pp == '-') |
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1771 { |
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1772 if (retval == LONG_MAX) |
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|
1773 retval = LONG_MIN; |
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1774 else |
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1775 retval = -retval; |
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1776 } |
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1777 *pp = p; |
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|
1778 return retval; |
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1779 } |
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1780 |
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1781 /* |
7 | 1782 * Return TRUE if "lbuf" is empty or only contains blanks. |
1783 */ | |
1784 int | |
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1785 vim_isblankline(char_u *lbuf) |
7 | 1786 { |
1787 char_u *p; | |
1788 | |
1789 p = skipwhite(lbuf); | |
1790 return (*p == NUL || *p == '\r' || *p == '\n'); | |
1791 } | |
1792 | |
1793 /* | |
1794 * Convert a string into a long and/or unsigned long, taking care of | |
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1795 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
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1796 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
7 | 1797 * 0 decimal |
1798 * '0' octal | |
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1799 * 'O' octal |
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1800 * 'o' octal |
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1801 * 'B' bin |
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1802 * 'b' bin |
7 | 1803 * 'X' hex |
1804 * 'x' hex | |
1805 * If "len" is not NULL, the length of the number in characters is returned. | |
1806 * If "nptr" is not NULL, the signed result is returned in it. | |
1807 * If "unptr" is not NULL, the unsigned result is returned in it. | |
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1808 * If "what" contains STR2NR_BIN recognize binary numbers |
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1809 * If "what" contains STR2NR_OCT recognize octal numbers |
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1810 * If "what" contains STR2NR_HEX recognize hex numbers |
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1811 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
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1812 * If "what" contains STR2NR_QUOTE ignore embedded single quotes |
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1813 * If maxlen > 0, check at a maximum maxlen chars. |
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1814 * If strict is TRUE, check the number strictly. return *len = 0 if fail. |
7 | 1815 */ |
1816 void | |
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1817 vim_str2nr( |
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1818 char_u *start, |
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1819 int *prep, // return: type of number 0 = decimal, 'x' |
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1820 // or 'X' is hex, '0', 'o' or 'O' is octal, |
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1821 // 'b' or 'B' is bin |
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1822 int *len, // return: detected length of number |
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1823 int what, // what numbers to recognize |
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1824 varnumber_T *nptr, // return: signed result |
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1825 uvarnumber_T *unptr, // return: unsigned result |
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1826 int maxlen, // max length of string to check |
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1827 int strict) // check strictly |
7 | 1828 { |
1829 char_u *ptr = start; | |
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1830 int pre = 0; // default is decimal |
7 | 1831 int negative = FALSE; |
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1832 uvarnumber_T un = 0; |
39 | 1833 int n; |
7 | 1834 |
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1835 if (len != NULL) |
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1836 *len = 0; |
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1837 |
7 | 1838 if (ptr[0] == '-') |
1839 { | |
1840 negative = TRUE; | |
1841 ++ptr; | |
1842 } | |
1843 | |
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1844 // Recognize hex, octal, and bin. |
6927 | 1845 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
1846 && (maxlen == 0 || maxlen > 1)) | |
7 | 1847 { |
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1848 pre = ptr[1]; |
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1849 if ((what & STR2NR_HEX) |
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1850 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
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1851 && (maxlen == 0 || maxlen > 2)) |
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1852 // hexadecimal |
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1853 ptr += 2; |
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1854 else if ((what & STR2NR_BIN) |
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1855 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
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1856 && (maxlen == 0 || maxlen > 2)) |
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1857 // binary |
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1858 ptr += 2; |
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1859 else if ((what & STR2NR_OOCT) |
23533
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1860 && (pre == 'O' || pre == 'o') && vim_isodigit(ptr[2]) |
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1861 && (maxlen == 0 || maxlen > 2)) |
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1862 // octal with prefix "0o" |
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1863 ptr += 2; |
7 | 1864 else |
1865 { | |
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1866 // decimal or octal, default is decimal |
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1867 pre = 0; |
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1868 if (what & STR2NR_OCT) |
39 | 1869 { |
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1870 // Don't interpret "0", "08" or "0129" as octal. |
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1871 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
39 | 1872 { |
1873 if (ptr[n] > '7') | |
1874 { | |
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1875 pre = 0; // can't be octal |
39 | 1876 break; |
1877 } | |
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1878 pre = '0'; // assume octal |
39 | 1879 } |
1880 } | |
7 | 1881 } |
1882 } | |
1883 | |
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1884 // Do the conversion manually to avoid sscanf() quirks. |
6927 | 1885 n = 1; |
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1886 if (pre == 'B' || pre == 'b' |
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|
1887 || ((what & STR2NR_BIN) && (what & STR2NR_FORCE))) |
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1888 { |
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1889 // bin |
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1890 if (pre != 0) |
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1891 n += 2; // skip over "0b" |
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1892 while ('0' <= *ptr && *ptr <= '1') |
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1893 { |
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1894 // avoid ubsan error for overflow |
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1895 if (un <= UVARNUM_MAX / 2) |
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1896 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
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1897 else |
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1898 un = UVARNUM_MAX; |
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1899 ++ptr; |
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1900 if (n++ == maxlen) |
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1901 break; |
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1902 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
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1903 && '0' <= ptr[1] && ptr[1] <= '1') |
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1904 { |
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1905 ++ptr; |
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1906 if (n++ == maxlen) |
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1907 break; |
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1908 } |
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1909 } |
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1910 } |
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1911 else if (pre == 'O' || pre == 'o' || |
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1912 pre == '0' || ((what & STR2NR_OCT) && (what & STR2NR_FORCE))) |
7 | 1913 { |
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1914 // octal |
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1915 if (pre != 0 && pre != '0') |
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1916 n += 2; // skip over "0o" |
293 | 1917 while ('0' <= *ptr && *ptr <= '7') |
7 | 1918 { |
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1919 // avoid ubsan error for overflow |
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1920 if (un <= UVARNUM_MAX / 8) |
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1921 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
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1922 else |
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1923 un = UVARNUM_MAX; |
293 | 1924 ++ptr; |
6927 | 1925 if (n++ == maxlen) |
1926 break; | |
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1927 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
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1928 && '0' <= ptr[1] && ptr[1] <= '7') |
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1929 { |
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1930 ++ptr; |
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1931 if (n++ == maxlen) |
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1932 break; |
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1933 } |
7 | 1934 } |
293 | 1935 } |
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1936 else if (pre != 0 || ((what & STR2NR_HEX) && (what & STR2NR_FORCE))) |
293 | 1937 { |
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1938 // hex |
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1939 if (pre != 0) |
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1940 n += 2; // skip over "0x" |
293 | 1941 while (vim_isxdigit(*ptr)) |
7 | 1942 { |
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1943 // avoid ubsan error for overflow |
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1944 if (un <= UVARNUM_MAX / 16) |
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1945 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
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1946 else |
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1947 un = UVARNUM_MAX; |
293 | 1948 ++ptr; |
6927 | 1949 if (n++ == maxlen) |
1950 break; | |
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1951 if ((what & STR2NR_QUOTE) && *ptr == '\'' && vim_isxdigit(ptr[1])) |
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1952 { |
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1953 ++ptr; |
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1954 if (n++ == maxlen) |
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1955 break; |
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|
1956 } |
7 | 1957 } |
1958 } | |
1959 else | |
1960 { | |
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1961 // decimal |
7 | 1962 while (VIM_ISDIGIT(*ptr)) |
1963 { | |
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|
1964 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
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|
1965 |
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|
1966 // avoid ubsan error for overflow |
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|
1967 if (un < UVARNUM_MAX / 10 |
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|
1968 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
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|
1969 un = 10 * un + digit; |
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|
1970 else |
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|
1971 un = UVARNUM_MAX; |
7 | 1972 ++ptr; |
6927 | 1973 if (n++ == maxlen) |
1974 break; | |
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|
1975 if ((what & STR2NR_QUOTE) && *ptr == '\'' && VIM_ISDIGIT(ptr[1])) |
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|
1976 { |
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|
1977 ++ptr; |
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|
1978 if (n++ == maxlen) |
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|
1979 break; |
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|
1980 } |
7 | 1981 } |
1982 } | |
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|
1983 |
19195
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|
1984 // Check for an alphanumeric character immediately following, that is |
16706
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patch 8.1.1355: obvious mistakes are accepted as valid expressions
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|
1985 // most likely a typo. |
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patch 8.1.1355: obvious mistakes are accepted as valid expressions
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diff
changeset
|
1986 if (strict && n - 1 != maxlen && ASCII_ISALNUM(*ptr)) |
77bcb5055fec
patch 8.1.1355: obvious mistakes are accepted as valid expressions
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diff
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|
1987 return; |
7 | 1988 |
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|
1989 if (prep != NULL) |
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diff
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|
1990 *prep = pre; |
7 | 1991 if (len != NULL) |
1992 *len = (int)(ptr - start); | |
1993 if (nptr != NULL) | |
16 | 1994 { |
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|
1995 if (negative) // account for leading '-' for decimal numbers |
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|
1996 { |
18757
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|
1997 // avoid ubsan error for overflow |
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|
1998 if (un > VARNUM_MAX) |
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patch 8.0.0219: ubsan reports errors for overflow
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|
1999 *nptr = VARNUM_MIN; |
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|
2000 else |
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|
2001 *nptr = -(varnumber_T)un; |
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patch 8.0.0219: ubsan reports errors for overflow
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|
2002 } |
16 | 2003 else |
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|
2004 { |
28964
8973f2f00872
patch 8.2.5004: right shift on negative number does not work as documented
Bram Moolenaar <Bram@vim.org>
parents:
28942
diff
changeset
|
2005 // prevent a larg unsigned number to become negative |
10658
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patch 8.0.0219: ubsan reports errors for overflow
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|
2006 if (un > VARNUM_MAX) |
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patch 8.0.0219: ubsan reports errors for overflow
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diff
changeset
|
2007 un = VARNUM_MAX; |
9389
32e34e574716
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8643
diff
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|
2008 *nptr = (varnumber_T)un; |
10658
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patch 8.0.0219: ubsan reports errors for overflow
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|
2009 } |
16 | 2010 } |
7 | 2011 if (unptr != NULL) |
2012 *unptr = un; | |
2013 } | |
2014 | |
2015 /* | |
2016 * Return the value of a single hex character. | |
2017 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
2018 */ | |
2019 int | |
7817
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diff
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|
2020 hex2nr(int c) |
7 | 2021 { |
2022 if (c >= 'a' && c <= 'f') | |
2023 return c - 'a' + 10; | |
2024 if (c >= 'A' && c <= 'F') | |
2025 return c - 'A' + 10; | |
2026 return c - '0'; | |
2027 } | |
2028 | |
2029 /* | |
2030 * Convert two hex characters to a byte. | |
2031 * Return -1 if one of the characters is not hex. | |
2032 */ | |
2033 int | |
7817
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diff
changeset
|
2034 hexhex2nr(char_u *p) |
7 | 2035 { |
2036 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
2037 return -1; | |
2038 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
2039 } | |
2040 | |
2041 /* | |
2042 * Return TRUE if "str" starts with a backslash that should be removed. | |
16054
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patch 8.1.1032: warnings from clang static analyzer
Bram Moolenaar <Bram@vim.org>
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diff
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|
2043 * For MS-DOS, MSWIN and OS/2 this is only done when the character after the |
7 | 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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83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2055 rem_backslash(char_u *str) |
7 | 2056 { |
2057 #ifdef BACKSLASH_IN_FILENAME | |
2058 return (str[0] == '\\' | |
2059 && str[1] < 0x80 | |
2060 && (str[1] == ' ' | |
2061 || (str[1] != NUL | |
2062 && str[1] != '*' | |
2063 && str[1] != '?' | |
2064 && !vim_isfilec(str[1])))); | |
2065 #else | |
2066 return (str[0] == '\\' && str[1] != NUL); | |
2067 #endif | |
2068 } | |
2069 | |
2070 /* | |
2071 * Halve the number of backslashes in a file name argument. | |
2072 * For MS-DOS we only do this if the character after the backslash | |
2073 * is not a normal file character. | |
2074 */ | |
2075 void | |
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2076 backslash_halve(char_u *p) |
7 | 2077 { |
2078 for ( ; *p; ++p) | |
2079 if (rem_backslash(p)) | |
1621 | 2080 STRMOVE(p, p + 1); |
7 | 2081 } |
2082 | |
2083 /* | |
2084 * backslash_halve() plus save the result in allocated memory. | |
17809
59f8948b7590
patch 8.1.1901: the +insert_expand feature is not always available
Bram Moolenaar <Bram@vim.org>
parents:
17789
diff
changeset
|
2085 * However, returns "p" when out of memory. |
7 | 2086 */ |
2087 char_u * | |
7817
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commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2088 backslash_halve_save(char_u *p) |
7 | 2089 { |
2090 char_u *res; | |
2091 | |
2092 res = vim_strsave(p); | |
2093 if (res == NULL) | |
2094 return p; | |
2095 backslash_halve(res); | |
2096 return res; | |
2097 } |