Mercurial > vim
annotate src/charset.c @ 29582:902abc03f8ee
Added tag v9.0.0131 for changeset 4a79bca8a76e5782ac0d6dbc18af0d86c0e775e3
author | Bram Moolenaar <Bram@vim.org> |
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date | Mon, 01 Aug 2022 17:15:03 +0200 |
parents | 24f01baa27b2 |
children | 32aee589fc9a |
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 |
7 | 15 |
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16 static int win_nolbr_chartabsize(chartabsize_T *cts, int *headp); |
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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. |
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742 * Does not handle text properties, since "s" is not a buffer line. |
7 | 743 */ |
744 int | |
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745 linetabsize(char_u *s) |
7 | 746 { |
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747 return linetabsize_col(0, s); |
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748 } |
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749 |
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750 /* |
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751 * Like linetabsize(), but "s" starts at column "startcol". |
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752 */ |
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753 int |
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754 linetabsize_col(int startcol, char_u *s) |
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755 { |
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756 chartabsize_T cts; |
7 | 757 |
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758 init_chartabsize_arg(&cts, curwin, 0, startcol, s, s); |
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759 while (*cts.cts_ptr != NUL) |
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760 cts.cts_vcol += lbr_chartabsize_adv(&cts); |
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761 clear_chartabsize_arg(&cts); |
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762 return (int)cts.cts_vcol; |
7 | 763 } |
764 | |
765 /* | |
766 * Like linetabsize(), but for a given window instead of the current one. | |
767 */ | |
768 int | |
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769 win_linetabsize(win_T *wp, linenr_T lnum, char_u *line, colnr_T len) |
7 | 770 { |
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771 chartabsize_T cts; |
7 | 772 |
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773 init_chartabsize_arg(&cts, wp, lnum, 0, line, line); |
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774 #ifdef FEAT_PROP_POPUP |
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775 cts.cts_with_trailing = len == MAXCOL; |
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776 #endif |
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777 for ( ; *cts.cts_ptr != NUL && (len == MAXCOL || cts.cts_ptr < line + len); |
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778 MB_PTR_ADV(cts.cts_ptr)) |
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779 cts.cts_vcol += win_lbr_chartabsize(&cts, NULL); |
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780 clear_chartabsize_arg(&cts); |
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781 return (int)cts.cts_vcol; |
7 | 782 } |
783 | |
784 /* | |
42 | 785 * Return TRUE if 'c' is a normal identifier character: |
786 * Letters and characters from the 'isident' option. | |
7 | 787 */ |
788 int | |
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789 vim_isIDc(int c) |
7 | 790 { |
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791 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
7 | 792 } |
793 | |
794 /* | |
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795 * Like vim_isIDc() but not using the 'isident' option: letters, numbers and |
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796 * underscore. |
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797 */ |
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798 int |
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799 vim_isNormalIDc(int c) |
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800 { |
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801 return ASCII_ISALNUM(c) || c == '_'; |
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802 } |
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803 |
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804 /* |
7 | 805 * return TRUE if 'c' is a keyword character: Letters and characters from |
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806 * 'iskeyword' option for the current buffer. |
7 | 807 * For multi-byte characters mb_get_class() is used (builtin rules). |
808 */ | |
809 int | |
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810 vim_iswordc(int c) |
7 | 811 { |
4043 | 812 return vim_iswordc_buf(c, curbuf); |
813 } | |
814 | |
815 int | |
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816 vim_iswordc_buf(int c, buf_T *buf) |
4043 | 817 { |
7 | 818 if (c >= 0x100) |
819 { | |
820 if (enc_dbcs != 0) | |
1869 | 821 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
7 | 822 if (enc_utf8) |
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823 return utf_class_buf(c, buf) >= 2; |
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824 return FALSE; |
7 | 825 } |
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826 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
7 | 827 } |
828 | |
829 /* | |
830 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
831 */ | |
832 int | |
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833 vim_iswordp(char_u *p) |
7 | 834 { |
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835 return vim_iswordp_buf(p, curbuf); |
7 | 836 } |
837 | |
838 int | |
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839 vim_iswordp_buf(char_u *p, buf_T *buf) |
7 | 840 { |
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841 int c = *p; |
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842 |
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843 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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844 c = (*mb_ptr2char)(p); |
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845 return vim_iswordc_buf(c, buf); |
7 | 846 } |
847 | |
848 /* | |
849 * return TRUE if 'c' is a valid file-name character | |
850 * Assume characters above 0x100 are valid (multi-byte). | |
851 */ | |
852 int | |
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853 vim_isfilec(int c) |
7 | 854 { |
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855 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
7 | 856 } |
857 | |
858 /* | |
1369 | 859 * return TRUE if 'c' is a valid file-name character or a wildcard character |
860 * Assume characters above 0x100 are valid (multi-byte). | |
861 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
862 * returns false. | |
863 */ | |
864 int | |
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865 vim_isfilec_or_wc(int c) |
1369 | 866 { |
867 char_u buf[2]; | |
868 | |
869 buf[0] = (char_u)c; | |
870 buf[1] = NUL; | |
871 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
872 } | |
873 | |
874 /* | |
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875 * Return TRUE if 'c' is a printable character. |
7 | 876 * Assume characters above 0x100 are printable (multi-byte), except for |
877 * Unicode. | |
878 */ | |
879 int | |
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880 vim_isprintc(int c) |
7 | 881 { |
882 if (enc_utf8 && c >= 0x100) | |
883 return utf_printable(c); | |
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884 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 885 } |
886 | |
887 /* | |
888 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
889 * byte of a double-byte character. | |
890 */ | |
891 int | |
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892 vim_isprintc_strict(int c) |
7 | 893 { |
894 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
895 return FALSE; | |
896 if (enc_utf8 && c >= 0x100) | |
897 return utf_printable(c); | |
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898 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
7 | 899 } |
900 | |
901 /* | |
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902 * Prepare the structure passed to chartabsize functions. |
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903 * "line" is the start of the line, "ptr" is the first relevant character. |
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904 * When "lnum" is zero do not use text properties that insert text. |
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905 */ |
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906 void |
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907 init_chartabsize_arg( |
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908 chartabsize_T *cts, |
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909 win_T *wp, |
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910 linenr_T lnum, |
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911 colnr_T col, |
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912 char_u *line, |
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913 char_u *ptr) |
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914 { |
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915 CLEAR_POINTER(cts); |
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916 cts->cts_win = wp; |
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917 cts->cts_lnum = lnum; |
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918 cts->cts_vcol = col; |
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919 cts->cts_line = line; |
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920 cts->cts_ptr = ptr; |
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921 #ifdef FEAT_PROP_POPUP |
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922 if (lnum > 0) |
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923 { |
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924 char_u *prop_start; |
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925 |
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926 cts->cts_text_prop_count = get_text_props(wp->w_buffer, lnum, |
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927 &prop_start, FALSE); |
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928 if (cts->cts_text_prop_count > 0) |
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929 { |
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930 // Make a copy of the properties, so that they are properly |
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931 // aligned. |
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932 cts->cts_text_props = ALLOC_MULT(textprop_T, |
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933 cts->cts_text_prop_count); |
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934 if (cts->cts_text_props == NULL) |
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935 cts->cts_text_prop_count = 0; |
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936 else |
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937 { |
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938 int i; |
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939 |
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940 mch_memmove(cts->cts_text_props, prop_start, |
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941 cts->cts_text_prop_count * sizeof(textprop_T)); |
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942 for (i = 0; i < cts->cts_text_prop_count; ++i) |
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943 if (cts->cts_text_props[i].tp_id < 0) |
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944 { |
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945 cts->cts_has_prop_with_text = TRUE; |
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946 break; |
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947 } |
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948 if (!cts->cts_has_prop_with_text) |
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949 { |
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950 // won't use the text properties, free them |
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951 VIM_CLEAR(cts->cts_text_props); |
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952 cts->cts_text_prop_count = 0; |
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953 } |
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954 } |
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955 } |
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956 } |
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957 #endif |
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958 } |
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959 |
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960 /* |
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961 * Free any allocated item in "cts". |
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962 */ |
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963 void |
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964 clear_chartabsize_arg(chartabsize_T *cts UNUSED) |
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965 { |
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966 #ifdef FEAT_PROP_POPUP |
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967 if (cts->cts_text_prop_count > 0) |
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968 { |
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969 VIM_CLEAR(cts->cts_text_props); |
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970 cts->cts_text_prop_count = 0; |
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971 } |
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972 #endif |
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973 } |
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974 |
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975 /* |
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976 * Like chartabsize(), but also check for line breaks on the screen and text |
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977 * properties that insert text. |
7 | 978 */ |
979 int | |
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980 lbr_chartabsize(chartabsize_T *cts) |
7 | 981 { |
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982 #if defined(FEAT_LINEBREAK) || defined(FEAT_PROP_POPUP) |
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983 if (1 |
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984 # ifdef FEAT_LINEBREAK |
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985 && !curwin->w_p_lbr && *get_showbreak_value(curwin) == NUL |
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986 && !curwin->w_p_bri |
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987 # endif |
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988 # ifdef FEAT_PROP_POPUP |
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989 && !cts->cts_has_prop_with_text |
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990 #endif |
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991 ) |
7 | 992 { |
993 #endif | |
994 if (curwin->w_p_wrap) | |
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995 return win_nolbr_chartabsize(cts, NULL); |
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996 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, cts->cts_ptr, cts->cts_vcol) |
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997 #if defined(FEAT_LINEBREAK) || defined(FEAT_PROP_POPUP) |
7 | 998 } |
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999 return win_lbr_chartabsize(cts, NULL); |
7 | 1000 #endif |
1001 } | |
1002 | |
1003 /* | |
1004 * Call lbr_chartabsize() and advance the pointer. | |
1005 */ | |
1006 int | |
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1007 lbr_chartabsize_adv(chartabsize_T *cts) |
7 | 1008 { |
1009 int retval; | |
1010 | |
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1011 retval = lbr_chartabsize(cts); |
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1012 MB_PTR_ADV(cts->cts_ptr); |
7 | 1013 return retval; |
1014 } | |
1015 | |
1016 /* | |
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1017 * Return the screen size of the character indicated by "cts". |
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1018 * "cts->cts_cur_text_width" is set to the extra size for a text property that |
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1019 * inserts text. |
7 | 1020 * This function is used very often, keep it fast!!!! |
1021 * | |
1022 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
1023 * string at start of line. Warning: *headp is only set if it's a non-zero | |
1024 * value, init to 0 before calling. | |
1025 */ | |
1026 int | |
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1027 win_lbr_chartabsize( |
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1028 chartabsize_T *cts, |
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1029 int *headp UNUSED) |
7 | 1030 { |
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1031 win_T *wp = cts->cts_win; |
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1032 #ifdef FEAT_PROP_POPUP |
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1033 char_u *line = cts->cts_line; // start of the line |
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1034 #endif |
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1035 char_u *s = cts->cts_ptr; |
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1036 colnr_T vcol = cts->cts_vcol; |
7 | 1037 #ifdef FEAT_LINEBREAK |
1038 int c; | |
1039 int size; | |
1040 colnr_T col2; | |
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1041 colnr_T col_adj = 0; // vcol + screen size of tab |
7 | 1042 colnr_T colmax; |
1043 int added; | |
1044 int mb_added = 0; | |
1045 int numberextra; | |
1046 char_u *ps; | |
1047 int tab_corr = (*s == TAB); | |
236 | 1048 int n; |
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1049 char_u *sbr; |
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1050 #endif |
7 | 1051 |
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1052 #if defined(FEAT_PROP_POPUP) |
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1053 cts->cts_cur_text_width = 0; |
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1054 #endif |
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1055 |
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1056 #if defined(FEAT_LINEBREAK) || defined(FEAT_PROP_POPUP) |
7 | 1057 /* |
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1058 * No 'linebreak', 'showbreak', 'breakindent' and text properties that |
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1059 * insert text: return quickly. |
7 | 1060 */ |
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1061 if (1 |
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1062 # ifdef FEAT_LINEBREAK |
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1063 && !wp->w_p_lbr && !wp->w_p_bri && *get_showbreak_value(wp) == NUL |
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1064 # endif |
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1065 # ifdef FEAT_PROP_POPUP |
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1066 && !cts->cts_has_prop_with_text |
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1067 # endif |
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1068 ) |
7 | 1069 #endif |
1070 { | |
1071 if (wp->w_p_wrap) | |
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1072 return win_nolbr_chartabsize(cts, headp); |
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1073 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, vcol) |
7 | 1074 } |
1075 | |
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1076 #if defined(FEAT_LINEBREAK) || defined(FEAT_PROP_POPUP) |
7 | 1077 /* |
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1078 * First get the normal size, without 'linebreak' or text properties |
7 | 1079 */ |
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1080 size = win_chartabsize(wp, s, vcol); |
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1081 |
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1082 # ifdef FEAT_PROP_POPUP |
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1083 if (cts->cts_has_prop_with_text) |
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1084 { |
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1085 int i; |
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1086 int col = (int)(s - line); |
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1087 |
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1088 for (i = 0; i < cts->cts_text_prop_count; ++i) |
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1089 { |
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1090 textprop_T *tp = cts->cts_text_props + i; |
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1091 |
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1092 if (tp->tp_id < 0 |
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1093 && ((tp->tp_col - 1 >= col && tp->tp_col - 1 < col + size |
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1094 && -tp->tp_id <= wp->w_buffer->b_textprop_text.ga_len) |
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1095 || (tp->tp_col == MAXCOL && (s[0] == NUL || s[1] == NUL) |
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1096 && cts->cts_with_trailing))) |
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1097 { |
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1098 char_u *p = ((char_u **)wp->w_buffer->b_textprop_text.ga_data)[ |
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1099 -tp->tp_id - 1]; |
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1100 int len = (int)STRLEN(p); |
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1101 |
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1102 // TODO: count screen cells |
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1103 if (tp->tp_col == MAXCOL) |
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1104 { |
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1105 // TODO: truncating |
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1106 if (tp->tp_flags & TP_FLAG_ALIGN_BELOW) |
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1107 len += wp->w_width - (vcol + size) % wp->w_width; |
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1108 } |
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1109 cts->cts_cur_text_width += len; |
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1110 size += len; |
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1111 } |
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1112 if (tp->tp_col - 1 > col) |
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1113 break; |
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1114 } |
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1115 } |
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1116 # endif |
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1117 |
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1118 # ifdef FEAT_LINEBREAK |
7 | 1119 c = *s; |
6024 | 1120 if (tab_corr) |
1121 col_adj = size - 1; | |
7 | 1122 |
1123 /* | |
1124 * If 'linebreak' set check at a blank before a non-blank if the line | |
1125 * needs a break here | |
1126 */ | |
1127 if (wp->w_p_lbr | |
11127
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|
1128 && VIM_ISBREAK(c) |
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1129 && !VIM_ISBREAK((int)s[1]) |
7 | 1130 && wp->w_p_wrap |
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|
1131 && wp->w_width != 0) |
7 | 1132 { |
1133 /* | |
1134 * Count all characters from first non-blank after a blank up to next | |
1135 * non-blank after a blank. | |
1136 */ | |
1137 numberextra = win_col_off(wp); | |
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1138 col2 = vcol; |
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|
1139 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
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1140 if (vcol >= colmax) |
236 | 1141 { |
6024 | 1142 colmax += col_adj; |
1143 n = colmax + win_col_off2(wp); | |
236 | 1144 if (n > 0) |
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1145 colmax += (((vcol - colmax) / n) + 1) * n - col_adj; |
236 | 1146 } |
1147 | |
7 | 1148 for (;;) |
1149 { | |
1150 ps = s; | |
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|
1151 MB_PTR_ADV(s); |
7 | 1152 c = *s; |
1153 if (!(c != NUL | |
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1154 && (VIM_ISBREAK(c) |
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1155 || (!VIM_ISBREAK(c) |
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1156 && (col2 == vcol || !VIM_ISBREAK((int)*ps)))))) |
7 | 1157 break; |
1158 | |
1159 col2 += win_chartabsize(wp, s, col2); | |
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1160 if (col2 >= colmax) // doesn't fit |
7 | 1161 { |
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1162 size = colmax - vcol + col_adj; |
7 | 1163 break; |
1164 } | |
1165 } | |
1166 } | |
1167 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
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1168 && wp->w_p_wrap && in_win_border(wp, vcol)) |
7 | 1169 { |
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1170 ++size; // Count the ">" in the last column. |
7 | 1171 mb_added = 1; |
1172 } | |
1173 | |
1174 /* | |
5995 | 1175 * May have to add something for 'breakindent' and/or 'showbreak' |
1176 * string at start of line. | |
7 | 1177 * Set *headp to the size of what we add. |
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1178 * Do not use 'showbreak' at the NUL after the text. |
7 | 1179 */ |
1180 added = 0; | |
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|
1181 sbr = c == NUL ? empty_option : get_showbreak_value(wp); |
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1182 if ((*sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && vcol != 0) |
7 | 1183 { |
6503 | 1184 colnr_T sbrlen = 0; |
1185 int numberwidth = win_col_off(wp); | |
1186 | |
1187 numberextra = numberwidth; | |
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1188 vcol += numberextra + mb_added; |
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1189 if (vcol >= (colnr_T)wp->w_width) |
7 | 1190 { |
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1191 vcol -= wp->w_width; |
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1192 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
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1193 if (vcol >= numberextra && numberextra > 0) |
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1194 vcol %= numberextra; |
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1195 if (*sbr != NUL) |
6288 | 1196 { |
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1197 sbrlen = (colnr_T)MB_CHARLEN(sbr); |
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1198 if (vcol >= sbrlen) |
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1199 vcol -= sbrlen; |
6288 | 1200 } |
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1201 if (vcol >= numberextra && numberextra > 0) |
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1202 vcol = vcol % numberextra; |
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1203 else if (vcol > 0 && numberextra > 0) |
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1204 vcol += numberwidth - win_col_off2(wp); |
6503 | 1205 |
1206 numberwidth -= win_col_off2(wp); | |
7 | 1207 } |
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1208 if (vcol == 0 || vcol + size + sbrlen > (colnr_T)wp->w_width) |
7 | 1209 { |
5995 | 1210 added = 0; |
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1211 if (*sbr != NUL) |
6503 | 1212 { |
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1213 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
6503 | 1214 { |
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1215 // calculate effective window width |
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|
1216 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
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1217 int prev_width = vcol |
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1218 ? ((colnr_T)wp->w_width - (sbrlen + vcol)) : 0; |
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1219 |
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1220 if (width <= 0) |
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1221 width = (colnr_T)1; |
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|
1222 added += ((size - prev_width) / width) * vim_strsize(sbr); |
6503 | 1223 if ((size - prev_width) % width) |
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|
1224 // wrapped, add another length of 'sbr' |
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1225 added += vim_strsize(sbr); |
6503 | 1226 } |
1227 else | |
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|
1228 added += vim_strsize(sbr); |
6503 | 1229 } |
5995 | 1230 if (wp->w_p_bri) |
1231 added += get_breakindent_win(wp, line); | |
1232 | |
6160 | 1233 size += added; |
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1234 if (vcol != 0) |
7 | 1235 added = 0; |
1236 } | |
1237 } | |
1238 if (headp != NULL) | |
1239 *headp = added + mb_added; | |
1240 return size; | |
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1241 # endif |
7 | 1242 #endif |
1243 } | |
1244 | |
1245 /* | |
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1246 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off, 'wrap' |
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1247 * is on and there are no properties that insert text. This means we need to |
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1248 * check for a double-byte character that doesn't fit at the end of the screen |
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1249 * line. |
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1250 * Only uses "cts_win", "cts_ptr" and "cts_vcol" from "cts". |
7 | 1251 */ |
1252 static int | |
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|
1253 win_nolbr_chartabsize( |
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|
1254 chartabsize_T *cts, |
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|
1255 int *headp) |
7 | 1256 { |
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1257 win_T *wp = cts->cts_win; |
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|
1258 char_u *s = cts->cts_ptr; |
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1259 colnr_T col = cts->cts_vcol; |
7 | 1260 int n; |
1261 | |
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|
1262 if (*s == TAB && (!wp->w_p_list || wp->w_lcs_chars.tab1)) |
7 | 1263 { |
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|
1264 # ifdef FEAT_VARTABS |
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|
1265 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
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|
1266 wp->w_buffer->b_p_vts_array); |
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|
1267 # else |
7 | 1268 n = wp->w_buffer->b_p_ts; |
1269 return (int)(n - (col % n)); | |
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1270 # endif |
7 | 1271 } |
1272 n = ptr2cells(s); | |
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|
1273 // Add one cell for a double-width character in the last column of the |
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1274 // window, displayed with a ">". |
7 | 1275 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) |
1276 { | |
1277 if (headp != NULL) | |
1278 *headp = 1; | |
1279 return 3; | |
1280 } | |
1281 return n; | |
1282 } | |
1283 | |
1284 /* | |
1285 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
1286 * "wp". | |
1287 */ | |
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|
1288 static int |
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|
1289 in_win_border(win_T *wp, colnr_T vcol) |
7 | 1290 { |
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|
1291 int width1; // width of first line (after line number) |
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1292 int width2; // width of further lines |
7 | 1293 |
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|
1294 if (wp->w_width == 0) // there is no border |
7 | 1295 return FALSE; |
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1296 width1 = wp->w_width - win_col_off(wp); |
1869 | 1297 if ((int)vcol < width1 - 1) |
7 | 1298 return FALSE; |
1869 | 1299 if ((int)vcol == width1 - 1) |
7 | 1300 return TRUE; |
1301 width2 = width1 + win_col_off2(wp); | |
1970 | 1302 if (width2 <= 0) |
1303 return FALSE; | |
7 | 1304 return ((vcol - width1) % width2 == width2 - 1); |
1305 } | |
1306 | |
1307 /* | |
1308 * Get virtual column number of pos. | |
1309 * start: on the first position of this character (TAB, ctrl) | |
1310 * cursor: where the cursor is on this character (first char, except for TAB) | |
1311 * end: on the last position of this character (TAB, ctrl) | |
1312 * | |
1313 * This is used very often, keep it fast! | |
1314 */ | |
1315 void | |
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1316 getvcol( |
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1317 win_T *wp, |
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|
1318 pos_T *pos, |
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1319 colnr_T *start, |
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1320 colnr_T *cursor, |
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|
1321 colnr_T *end) |
7 | 1322 { |
1323 colnr_T vcol; | |
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1324 char_u *ptr; // points to current char |
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|
1325 char_u *posptr; // points to char at pos->col |
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|
1326 char_u *line; // start of the line |
7 | 1327 int incr; |
1328 int head; | |
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1329 #ifdef FEAT_VARTABS |
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1330 int *vts = wp->w_buffer->b_p_vts_array; |
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|
1331 #endif |
7 | 1332 int ts = wp->w_buffer->b_p_ts; |
1333 int c; | |
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1334 chartabsize_T cts; |
7 | 1335 |
1336 vcol = 0; | |
5995 | 1337 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
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|
1338 if (pos->col == MAXCOL) |
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1339 posptr = NULL; // continue until the NUL |
2108
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1340 else |
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1341 { |
26843
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|
1342 colnr_T i; |
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1343 |
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|
1344 // In a few cases the position can be beyond the end of the line. |
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1345 for (i = 0; i < pos->col; ++i) |
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1346 if (ptr[i] == NUL) |
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1347 { |
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1348 pos->col = i; |
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1349 break; |
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1350 } |
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1351 posptr = ptr + pos->col; |
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1352 if (has_mbyte) |
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1353 // always start on the first byte |
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1354 posptr -= (*mb_head_off)(line, posptr); |
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1355 } |
7 | 1356 |
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1357 init_chartabsize_arg(&cts, wp, pos->lnum, 0, line, line); |
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|
1358 |
7 | 1359 /* |
1360 * This function is used very often, do some speed optimizations. | |
5995 | 1361 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
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1362 * and there are no text properties with "text" use a simple loop. |
7 | 1363 * Also use this when 'list' is set but tabs take their normal size. |
1364 */ | |
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|
1365 if ((!wp->w_p_list || wp->w_lcs_chars.tab1 != NUL) |
7 | 1366 #ifdef FEAT_LINEBREAK |
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1367 && !wp->w_p_lbr && *get_showbreak_value(wp) == NUL && !wp->w_p_bri |
7 | 1368 #endif |
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1369 #ifdef FEAT_PROP_POPUP |
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1370 && !cts.cts_has_prop_with_text |
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1371 #endif |
7 | 1372 ) |
1373 { | |
1374 for (;;) | |
1375 { | |
1376 head = 0; | |
1377 c = *ptr; | |
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1378 // make sure we don't go past the end of the line |
7 | 1379 if (c == NUL) |
1380 { | |
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1381 incr = 1; // NUL at end of line only takes one column |
7 | 1382 break; |
1383 } | |
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1384 // A tab gets expanded, depending on the current column |
7 | 1385 if (c == TAB) |
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1386 #ifdef FEAT_VARTABS |
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|
1387 incr = tabstop_padding(vcol, ts, vts); |
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|
1388 #else |
7 | 1389 incr = ts - (vcol % ts); |
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1390 #endif |
7 | 1391 else |
1392 { | |
1393 if (has_mbyte) | |
1394 { | |
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1395 // For utf-8, if the byte is >= 0x80, need to look at |
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|
1396 // further bytes to find the cell width. |
7 | 1397 if (enc_utf8 && c >= 0x80) |
1398 incr = utf_ptr2cells(ptr); | |
1399 else | |
7697
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|
1400 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1401 |
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|
1402 // If a double-cell char doesn't fit at the end of a line |
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1403 // it wraps to the next line, it's like this char is three |
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|
1404 // cells wide. |
1546 | 1405 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
1406 && in_win_border(wp, vcol)) | |
7 | 1407 { |
1408 ++incr; | |
1409 head = 1; | |
1410 } | |
1411 } | |
1412 else | |
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|
1413 incr = g_chartab[c] & CT_CELL_MASK; |
7 | 1414 } |
1415 | |
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|
1416 if (posptr != NULL && ptr >= posptr) // character at pos->col |
7 | 1417 break; |
1418 | |
1419 vcol += incr; | |
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|
1420 MB_PTR_ADV(ptr); |
7 | 1421 } |
1422 } | |
1423 else | |
1424 { | |
1425 for (;;) | |
1426 { | |
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1427 // A tab gets expanded, depending on the current column. |
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|
1428 // Other things also take up space. |
7 | 1429 head = 0; |
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|
1430 incr = win_lbr_chartabsize(&cts, &head); |
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1431 // make sure we don't go past the end of the line |
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1432 if (*cts.cts_ptr == NUL) |
7 | 1433 { |
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|
1434 incr = 1; // NUL at end of line only takes one column |
7 | 1435 break; |
1436 } | |
1437 | |
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1438 if (posptr != NULL && cts.cts_ptr >= posptr) |
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1439 // character at pos->col |
7 | 1440 break; |
1441 | |
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1442 cts.cts_vcol += incr; |
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1443 MB_PTR_ADV(cts.cts_ptr); |
7 | 1444 } |
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1445 vcol = cts.cts_vcol; |
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1446 ptr = cts.cts_ptr; |
7 | 1447 } |
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1448 clear_chartabsize_arg(&cts); |
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1449 |
7 | 1450 if (start != NULL) |
1451 *start = vcol + head; | |
1452 if (end != NULL) | |
1453 *end = vcol + incr - 1; | |
1454 if (cursor != NULL) | |
1455 { | |
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1456 #ifdef FEAT_PROP_POPUP |
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1457 // cursor is after inserted text |
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|
1458 vcol += cts.cts_cur_text_width; |
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1459 #endif |
7 | 1460 if (*ptr == TAB |
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|
1461 && (State & MODE_NORMAL) |
7 | 1462 && !wp->w_p_list |
1463 && !virtual_active() | |
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1464 && !(VIsual_active |
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|
1465 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
7 | 1466 ) |
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1467 *cursor = vcol + incr - 1; // cursor at end |
7 | 1468 else |
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1469 *cursor = vcol + head; // cursor at start |
7 | 1470 } |
1471 } | |
1472 | |
1473 /* | |
1474 * Get virtual cursor column in the current window, pretending 'list' is off. | |
1475 */ | |
1476 colnr_T | |
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1477 getvcol_nolist(pos_T *posp) |
7 | 1478 { |
1479 int list_save = curwin->w_p_list; | |
1480 colnr_T vcol; | |
1481 | |
1482 curwin->w_p_list = FALSE; | |
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|
1483 if (posp->coladd) |
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|
1484 getvvcol(curwin, posp, NULL, &vcol, NULL); |
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1485 else |
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|
1486 getvcol(curwin, posp, NULL, &vcol, NULL); |
7 | 1487 curwin->w_p_list = list_save; |
1488 return vcol; | |
1489 } | |
1490 | |
1491 /* | |
1492 * Get virtual column in virtual mode. | |
1493 */ | |
1494 void | |
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1495 getvvcol( |
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1496 win_T *wp, |
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|
1497 pos_T *pos, |
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1498 colnr_T *start, |
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1499 colnr_T *cursor, |
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|
1500 colnr_T *end) |
7 | 1501 { |
1502 colnr_T col; | |
1503 colnr_T coladd; | |
1504 colnr_T endadd; | |
1505 char_u *ptr; | |
1506 | |
1507 if (virtual_active()) | |
1508 { | |
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|
1509 // For virtual mode, only want one value |
7 | 1510 getvcol(wp, pos, &col, NULL, NULL); |
1511 | |
1512 coladd = pos->coladd; | |
1513 endadd = 0; | |
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|
1514 // Cannot put the cursor on part of a wide character. |
7 | 1515 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
1869 | 1516 if (pos->col < (colnr_T)STRLEN(ptr)) |
7 | 1517 { |
1518 int c = (*mb_ptr2char)(ptr + pos->col); | |
1519 | |
1520 if (c != TAB && vim_isprintc(c)) | |
1521 { | |
1869 | 1522 endadd = (colnr_T)(char2cells(c) - 1); |
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|
1523 if (coladd > endadd) // past end of line |
557 | 1524 endadd = 0; |
7 | 1525 else |
1526 coladd = 0; | |
1527 } | |
1528 } | |
1529 col += coladd; | |
1530 if (start != NULL) | |
1531 *start = col; | |
1532 if (cursor != NULL) | |
1533 *cursor = col; | |
1534 if (end != NULL) | |
1535 *end = col + endadd; | |
1536 } | |
1537 else | |
1538 getvcol(wp, pos, start, cursor, end); | |
1539 } | |
1540 | |
1541 /* | |
1542 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
1543 * Used for Visual block mode. | |
1544 */ | |
1545 void | |
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changeset
|
1546 getvcols( |
83861277e6a3
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diff
changeset
|
1547 win_T *wp, |
83861277e6a3
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changeset
|
1548 pos_T *pos1, |
83861277e6a3
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changeset
|
1549 pos_T *pos2, |
83861277e6a3
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changeset
|
1550 colnr_T *left, |
83861277e6a3
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diff
changeset
|
1551 colnr_T *right) |
7 | 1552 { |
1553 colnr_T from1, from2, to1, to2; | |
1554 | |
11121
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|
1555 if (LT_POSP(pos1, pos2)) |
7 | 1556 { |
1557 getvvcol(wp, pos1, &from1, NULL, &to1); | |
1558 getvvcol(wp, pos2, &from2, NULL, &to2); | |
1559 } | |
1560 else | |
1561 { | |
1562 getvvcol(wp, pos2, &from1, NULL, &to1); | |
1563 getvvcol(wp, pos1, &from2, NULL, &to2); | |
1564 } | |
1565 if (from2 < from1) | |
1566 *left = from2; | |
1567 else | |
1568 *left = from1; | |
1569 if (to2 > to1) | |
1570 { | |
1571 if (*p_sel == 'e' && from2 - 1 >= to1) | |
1572 *right = from2 - 1; | |
1573 else | |
1574 *right = to2; | |
1575 } | |
1576 else | |
1577 *right = to1; | |
1578 } | |
1579 | |
1580 /* | |
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|
1581 * Skip over ' ' and '\t'. |
7 | 1582 */ |
1583 char_u * | |
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|
1584 skipwhite(char_u *q) |
7 | 1585 { |
1687 | 1586 char_u *p = q; |
1587 | |
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|
1588 while (VIM_ISWHITE(*p)) |
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|
1589 ++p; |
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|
1590 return p; |
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|
1591 } |
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|
1592 |
27018
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|
1593 #if defined(FEAT_EVAL) || defined(PROTO) |
26572
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|
1594 /* |
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|
1595 * skip over ' ', '\t' and '\n'. |
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|
1596 */ |
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|
1597 char_u * |
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|
1598 skipwhite_and_nl(char_u *q) |
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|
1599 { |
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|
1600 char_u *p = q; |
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|
1601 |
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|
1602 while (VIM_ISWHITE(*p) || *p == NL) |
7 | 1603 ++p; |
1604 return p; | |
1605 } | |
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|
1606 #endif |
7 | 1607 |
1608 /* | |
12323
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|
1609 * getwhitecols: return the number of whitespace |
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|
1610 * columns (bytes) at the start of a given line |
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1611 */ |
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1612 int |
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|
1613 getwhitecols_curline() |
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|
1614 { |
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|
1615 return getwhitecols(ml_get_curline()); |
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|
1616 } |
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1617 |
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|
1618 int |
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|
1619 getwhitecols(char_u *p) |
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1620 { |
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|
1621 return skipwhite(p) - p; |
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1622 } |
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|
1623 |
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|
1624 /* |
293 | 1625 * skip over digits |
7 | 1626 */ |
1627 char_u * | |
7817
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|
1628 skipdigits(char_u *q) |
7 | 1629 { |
1687 | 1630 char_u *p = q; |
1631 | |
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|
1632 while (VIM_ISDIGIT(*p)) // skip to next non-digit |
7 | 1633 ++p; |
1634 return p; | |
1635 } | |
1636 | |
741 | 1637 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
301 | 1638 /* |
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|
1639 * skip over binary digits |
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|
1640 */ |
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|
1641 char_u * |
7817
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|
1642 skipbin(char_u *q) |
7447
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|
1643 { |
ad432f8f68fb
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|
1644 char_u *p = q; |
ad432f8f68fb
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1645 |
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|
1646 while (vim_isbdigit(*p)) // skip to next non-digit |
7447
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changeset
|
1647 ++p; |
ad432f8f68fb
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changeset
|
1648 return p; |
ad432f8f68fb
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changeset
|
1649 } |
ad432f8f68fb
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|
1650 |
ad432f8f68fb
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diff
changeset
|
1651 /* |
301 | 1652 * skip over digits and hex characters |
1653 */ | |
1654 char_u * | |
7817
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changeset
|
1655 skiphex(char_u *q) |
301 | 1656 { |
1687 | 1657 char_u *p = q; |
1658 | |
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|
1659 while (vim_isxdigit(*p)) // skip to next non-digit |
301 | 1660 ++p; |
1661 return p; | |
1662 } | |
1663 #endif | |
1664 | |
293 | 1665 /* |
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changeset
|
1666 * skip to bin digit (or NUL after the string) |
ad432f8f68fb
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|
1667 */ |
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|
1668 char_u * |
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|
1669 skiptobin(char_u *q) |
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|
1670 { |
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changeset
|
1671 char_u *p = q; |
ad432f8f68fb
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|
1672 |
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|
1673 while (*p != NUL && !vim_isbdigit(*p)) // skip to next digit |
7447
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|
1674 ++p; |
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|
1675 return p; |
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|
1676 } |
ad432f8f68fb
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|
1677 |
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changeset
|
1678 /* |
293 | 1679 * skip to digit (or NUL after the string) |
1680 */ | |
1681 char_u * | |
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changeset
|
1682 skiptodigit(char_u *q) |
293 | 1683 { |
1687 | 1684 char_u *p = q; |
1685 | |
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changeset
|
1686 while (*p != NUL && !VIM_ISDIGIT(*p)) // skip to next digit |
293 | 1687 ++p; |
1688 return p; | |
1689 } | |
1690 | |
1691 /* | |
1692 * skip to hex character (or NUL after the string) | |
1693 */ | |
1694 char_u * | |
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changeset
|
1695 skiptohex(char_u *q) |
293 | 1696 { |
1687 | 1697 char_u *p = q; |
1698 | |
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changeset
|
1699 while (*p != NUL && !vim_isxdigit(*p)) // skip to next digit |
293 | 1700 ++p; |
1701 return p; | |
1702 } | |
1703 | |
7 | 1704 /* |
1705 * Variant of isdigit() that can handle characters > 0x100. | |
1706 * We don't use isdigit() here, because on some systems it also considers | |
1707 * superscript 1 to be a digit. | |
1708 * Use the VIM_ISDIGIT() macro for simple arguments. | |
1709 */ | |
1710 int | |
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changeset
|
1711 vim_isdigit(int c) |
7 | 1712 { |
1713 return (c >= '0' && c <= '9'); | |
1714 } | |
1715 | |
1716 /* | |
1717 * Variant of isxdigit() that can handle characters > 0x100. | |
1718 * We don't use isxdigit() here, because on some systems it also considers | |
1719 * superscript 1 to be a digit. | |
1720 */ | |
1721 int | |
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changeset
|
1722 vim_isxdigit(int c) |
7 | 1723 { |
1724 return (c >= '0' && c <= '9') | |
1725 || (c >= 'a' && c <= 'f') | |
1726 || (c >= 'A' && c <= 'F'); | |
1727 } | |
1728 | |
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1729 /* |
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1730 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1731 * characters > 0x100. |
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1732 */ |
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1733 int |
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1734 vim_isbdigit(int c) |
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1735 { |
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1736 return (c == '0' || c == '1'); |
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1737 } |
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1738 |
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1739 static int |
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1740 vim_isodigit(int c) |
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1741 { |
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1742 return (c >= '0' && c <= '7'); |
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1743 } |
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1744 |
492 | 1745 /* |
1746 * Vim's own character class functions. These exist because many library | |
1747 * islower()/toupper() etc. do not work properly: they crash when used with | |
1748 * invalid values or can't handle latin1 when the locale is C. | |
1749 * Speed is most important here. | |
1750 */ | |
1751 #define LATIN1LOWER 'l' | |
1752 #define LATIN1UPPER 'U' | |
1753 | |
497 | 1754 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
3533 | 1755 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
1756 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1757 |
1758 int | |
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1759 vim_islower(int c) |
492 | 1760 { |
1761 if (c <= '@') | |
1762 return FALSE; | |
1763 if (c >= 0x80) | |
1764 { | |
1765 if (enc_utf8) | |
1766 return utf_islower(c); | |
1767 if (c >= 0x100) | |
1768 { | |
1769 #ifdef HAVE_ISWLOWER | |
1770 if (has_mbyte) | |
1771 return iswlower(c); | |
1772 #endif | |
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1773 // islower() can't handle these chars and may crash |
492 | 1774 return FALSE; |
1775 } | |
1776 if (enc_latin1like) | |
1777 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
1778 } | |
1779 return islower(c); | |
1780 } | |
1781 | |
1782 int | |
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1783 vim_isupper(int c) |
492 | 1784 { |
1785 if (c <= '@') | |
1786 return FALSE; | |
1787 if (c >= 0x80) | |
1788 { | |
1789 if (enc_utf8) | |
1790 return utf_isupper(c); | |
1791 if (c >= 0x100) | |
1792 { | |
1793 #ifdef HAVE_ISWUPPER | |
1794 if (has_mbyte) | |
1795 return iswupper(c); | |
1796 #endif | |
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1797 // islower() can't handle these chars and may crash |
492 | 1798 return FALSE; |
1799 } | |
1800 if (enc_latin1like) | |
1801 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
1802 } | |
1803 return isupper(c); | |
1804 } | |
1805 | |
1806 int | |
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1807 vim_isalpha(int c) |
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1808 { |
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1809 return vim_islower(c) || vim_isupper(c); |
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1810 } |
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1811 |
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1812 int |
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1813 vim_toupper(int c) |
492 | 1814 { |
1815 if (c <= '@') | |
1816 return c; | |
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1817 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1818 { |
1819 if (enc_utf8) | |
1820 return utf_toupper(c); | |
1821 if (c >= 0x100) | |
1822 { | |
1823 #ifdef HAVE_TOWUPPER | |
1824 if (has_mbyte) | |
1825 return towupper(c); | |
1826 #endif | |
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1827 // toupper() can't handle these chars and may crash |
492 | 1828 return c; |
1829 } | |
1830 if (enc_latin1like) | |
1831 return latin1upper[c]; | |
1832 } | |
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1833 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1834 return TOUPPER_ASC(c); |
492 | 1835 return TOUPPER_LOC(c); |
1836 } | |
1837 | |
1838 int | |
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1839 vim_tolower(int c) |
492 | 1840 { |
1841 if (c <= '@') | |
1842 return c; | |
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1843 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
492 | 1844 { |
1845 if (enc_utf8) | |
1846 return utf_tolower(c); | |
1847 if (c >= 0x100) | |
1848 { | |
1849 #ifdef HAVE_TOWLOWER | |
1850 if (has_mbyte) | |
1851 return towlower(c); | |
1852 #endif | |
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1853 // tolower() can't handle these chars and may crash |
492 | 1854 return c; |
1855 } | |
1856 if (enc_latin1like) | |
1857 return latin1lower[c]; | |
1858 } | |
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1859 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1860 return TOLOWER_ASC(c); |
492 | 1861 return TOLOWER_LOC(c); |
1862 } | |
1863 | |
7 | 1864 /* |
1865 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
1866 */ | |
1867 char_u * | |
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1868 skiptowhite(char_u *p) |
7 | 1869 { |
1870 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1871 ++p; | |
1872 return p; | |
1873 } | |
1874 | |
1875 /* | |
1876 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
1877 */ | |
1878 char_u * | |
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1879 skiptowhite_esc(char_u *p) |
7 | 1880 { |
1881 while (*p != ' ' && *p != '\t' && *p != NUL) | |
1882 { | |
1883 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
1884 ++p; | |
1885 ++p; | |
1886 } | |
1887 return p; | |
1888 } | |
1889 | |
1890 /* | |
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1891 * Get a number from a string and skip over it. |
7 | 1892 * Note: the argument is a pointer to a char_u pointer! |
1893 */ | |
1894 long | |
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1895 getdigits(char_u **pp) |
7 | 1896 { |
1897 char_u *p; | |
1898 long retval; | |
1899 | |
1900 p = *pp; | |
1901 retval = atol((char *)p); | |
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1902 if (*p == '-') // skip negative sign |
7 | 1903 ++p; |
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1904 p = skipdigits(p); // skip to next non-digit |
7 | 1905 *pp = p; |
1906 return retval; | |
1907 } | |
1908 | |
1909 /* | |
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1910 * Like getdigits() but allow for embedded single quotes. |
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1911 */ |
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1912 long |
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1913 getdigits_quoted(char_u **pp) |
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1914 { |
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1915 char_u *p = *pp; |
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1916 long retval = 0; |
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1917 |
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1918 if (*p == '-') |
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1919 ++p; |
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1920 while (VIM_ISDIGIT(*p)) |
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1921 { |
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1922 if (retval >= LONG_MAX / 10 - 10) |
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1923 retval = LONG_MAX; |
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1924 else |
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1925 retval = retval * 10 - '0' + *p; |
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1926 ++p; |
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1927 if (in_vim9script() && *p == '\'' && VIM_ISDIGIT(p[1])) |
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1928 ++p; |
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1929 } |
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1930 if (**pp == '-') |
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1931 { |
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1932 if (retval == LONG_MAX) |
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1933 retval = LONG_MIN; |
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1934 else |
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1935 retval = -retval; |
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1936 } |
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1937 *pp = p; |
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1938 return retval; |
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1939 } |
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1940 |
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1941 /* |
7 | 1942 * Return TRUE if "lbuf" is empty or only contains blanks. |
1943 */ | |
1944 int | |
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1945 vim_isblankline(char_u *lbuf) |
7 | 1946 { |
1947 char_u *p; | |
1948 | |
1949 p = skipwhite(lbuf); | |
1950 return (*p == NUL || *p == '\r' || *p == '\n'); | |
1951 } | |
1952 | |
1953 /* | |
1954 * Convert a string into a long and/or unsigned long, taking care of | |
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1955 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
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1956 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
7 | 1957 * 0 decimal |
1958 * '0' octal | |
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1959 * 'O' octal |
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1960 * 'o' octal |
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1961 * 'B' bin |
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1962 * 'b' bin |
7 | 1963 * 'X' hex |
1964 * 'x' hex | |
1965 * If "len" is not NULL, the length of the number in characters is returned. | |
1966 * If "nptr" is not NULL, the signed result is returned in it. | |
1967 * If "unptr" is not NULL, the unsigned result is returned in it. | |
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1968 * If "what" contains STR2NR_BIN recognize binary numbers |
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1969 * If "what" contains STR2NR_OCT recognize octal numbers |
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1970 * If "what" contains STR2NR_HEX recognize hex numbers |
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1971 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
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1972 * If "what" contains STR2NR_QUOTE ignore embedded single quotes |
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1973 * If maxlen > 0, check at a maximum maxlen chars. |
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1974 * If strict is TRUE, check the number strictly. return *len = 0 if fail. |
7 | 1975 */ |
1976 void | |
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1977 vim_str2nr( |
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1978 char_u *start, |
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1979 int *prep, // return: type of number 0 = decimal, 'x' |
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1980 // or 'X' is hex, '0', 'o' or 'O' is octal, |
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1981 // 'b' or 'B' is bin |
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1982 int *len, // return: detected length of number |
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1983 int what, // what numbers to recognize |
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1984 varnumber_T *nptr, // return: signed result |
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1985 uvarnumber_T *unptr, // return: unsigned result |
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1986 int maxlen, // max length of string to check |
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1987 int strict) // check strictly |
7 | 1988 { |
1989 char_u *ptr = start; | |
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1990 int pre = 0; // default is decimal |
7 | 1991 int negative = FALSE; |
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1992 uvarnumber_T un = 0; |
39 | 1993 int n; |
7 | 1994 |
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1995 if (len != NULL) |
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1996 *len = 0; |
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1997 |
7 | 1998 if (ptr[0] == '-') |
1999 { | |
2000 negative = TRUE; | |
2001 ++ptr; | |
2002 } | |
2003 | |
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2004 // Recognize hex, octal, and bin. |
6927 | 2005 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
2006 && (maxlen == 0 || maxlen > 1)) | |
7 | 2007 { |
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2008 pre = ptr[1]; |
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2009 if ((what & STR2NR_HEX) |
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2010 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
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2011 && (maxlen == 0 || maxlen > 2)) |
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2012 // hexadecimal |
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2013 ptr += 2; |
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2014 else if ((what & STR2NR_BIN) |
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2015 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
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2016 && (maxlen == 0 || maxlen > 2)) |
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2017 // binary |
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2018 ptr += 2; |
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2019 else if ((what & STR2NR_OOCT) |
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2020 && (pre == 'O' || pre == 'o') && vim_isodigit(ptr[2]) |
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2021 && (maxlen == 0 || maxlen > 2)) |
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2022 // octal with prefix "0o" |
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2023 ptr += 2; |
7 | 2024 else |
2025 { | |
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2026 // decimal or octal, default is decimal |
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2027 pre = 0; |
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2028 if (what & STR2NR_OCT) |
39 | 2029 { |
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2030 // Don't interpret "0", "08" or "0129" as octal. |
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2031 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
39 | 2032 { |
2033 if (ptr[n] > '7') | |
2034 { | |
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2035 pre = 0; // can't be octal |
39 | 2036 break; |
2037 } | |
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2038 pre = '0'; // assume octal |
39 | 2039 } |
2040 } | |
7 | 2041 } |
2042 } | |
2043 | |
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2044 // Do the conversion manually to avoid sscanf() quirks. |
6927 | 2045 n = 1; |
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2046 if (pre == 'B' || pre == 'b' |
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2047 || ((what & STR2NR_BIN) && (what & STR2NR_FORCE))) |
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2048 { |
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2049 // bin |
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2050 if (pre != 0) |
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2051 n += 2; // skip over "0b" |
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2052 while ('0' <= *ptr && *ptr <= '1') |
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2053 { |
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2054 // avoid ubsan error for overflow |
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2055 if (un <= UVARNUM_MAX / 2) |
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2056 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
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2057 else |
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2058 un = UVARNUM_MAX; |
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2059 ++ptr; |
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2060 if (n++ == maxlen) |
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2061 break; |
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2062 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
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2063 && '0' <= ptr[1] && ptr[1] <= '1') |
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2064 { |
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2065 ++ptr; |
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2066 if (n++ == maxlen) |
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2067 break; |
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2068 } |
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2069 } |
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2070 } |
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2071 else if (pre == 'O' || pre == 'o' || |
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2072 pre == '0' || ((what & STR2NR_OCT) && (what & STR2NR_FORCE))) |
7 | 2073 { |
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2074 // octal |
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2075 if (pre != 0 && pre != '0') |
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2076 n += 2; // skip over "0o" |
293 | 2077 while ('0' <= *ptr && *ptr <= '7') |
7 | 2078 { |
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2079 // avoid ubsan error for overflow |
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2080 if (un <= UVARNUM_MAX / 8) |
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changeset
|
2081 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2082 else |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2083 un = UVARNUM_MAX; |
293 | 2084 ++ptr; |
6927 | 2085 if (n++ == maxlen) |
2086 break; | |
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2087 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2088 && '0' <= ptr[1] && ptr[1] <= '7') |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2089 { |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2090 ++ptr; |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2091 if (n++ == maxlen) |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2092 break; |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2093 } |
7 | 2094 } |
293 | 2095 } |
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2096 else if (pre != 0 || ((what & STR2NR_HEX) && (what & STR2NR_FORCE))) |
293 | 2097 { |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
2098 // hex |
7447
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
parents:
7072
diff
changeset
|
2099 if (pre != 0) |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
2100 n += 2; // skip over "0x" |
293 | 2101 while (vim_isxdigit(*ptr)) |
7 | 2102 { |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
2103 // avoid ubsan error for overflow |
14061
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
parents:
13786
diff
changeset
|
2104 if (un <= UVARNUM_MAX / 16) |
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2105 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2106 else |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2107 un = UVARNUM_MAX; |
293 | 2108 ++ptr; |
6927 | 2109 if (n++ == maxlen) |
2110 break; | |
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2111 if ((what & STR2NR_QUOTE) && *ptr == '\'' && vim_isxdigit(ptr[1])) |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2112 { |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2113 ++ptr; |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2114 if (n++ == maxlen) |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2115 break; |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2116 } |
7 | 2117 } |
2118 } | |
2119 else | |
2120 { | |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
2121 // decimal |
7 | 2122 while (VIM_ISDIGIT(*ptr)) |
2123 { | |
14061
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
parents:
13786
diff
changeset
|
2124 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
parents:
13786
diff
changeset
|
2125 |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
2126 // avoid ubsan error for overflow |
14061
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
parents:
13786
diff
changeset
|
2127 if (un < UVARNUM_MAX / 10 |
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
parents:
13786
diff
changeset
|
2128 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
47b2db8a5709
patch 8.1.0048: vim_str2nr() does not handle numbers close to the maximum
Christian Brabandt <cb@256bit.org>
parents:
13786
diff
changeset
|
2129 un = 10 * un + digit; |
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2130 else |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2131 un = UVARNUM_MAX; |
7 | 2132 ++ptr; |
6927 | 2133 if (n++ == maxlen) |
2134 break; | |
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2135 if ((what & STR2NR_QUOTE) && *ptr == '\'' && VIM_ISDIGIT(ptr[1])) |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2136 { |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2137 ++ptr; |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2138 if (n++ == maxlen) |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2139 break; |
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2140 } |
7 | 2141 } |
2142 } | |
18082
1c7a91cf2356
patch 8.1.2036: the str2nr() tests fail
Bram Moolenaar <Bram@vim.org>
parents:
17809
diff
changeset
|
2143 |
19195
2ef19eed524a
patch 8.2.0156: various typos in source files and tests
Bram Moolenaar <Bram@vim.org>
parents:
18757
diff
changeset
|
2144 // Check for an alphanumeric character immediately following, that is |
16706
77bcb5055fec
patch 8.1.1355: obvious mistakes are accepted as valid expressions
Bram Moolenaar <Bram@vim.org>
parents:
16054
diff
changeset
|
2145 // most likely a typo. |
77bcb5055fec
patch 8.1.1355: obvious mistakes are accepted as valid expressions
Bram Moolenaar <Bram@vim.org>
parents:
16054
diff
changeset
|
2146 if (strict && n - 1 != maxlen && ASCII_ISALNUM(*ptr)) |
77bcb5055fec
patch 8.1.1355: obvious mistakes are accepted as valid expressions
Bram Moolenaar <Bram@vim.org>
parents:
16054
diff
changeset
|
2147 return; |
7 | 2148 |
7447
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
parents:
7072
diff
changeset
|
2149 if (prep != NULL) |
ad432f8f68fb
commit https://github.com/vim/vim/commit/887c1fea4a114e7170091942d0446c8882701b5b
Christian Brabandt <cb@256bit.org>
parents:
7072
diff
changeset
|
2150 *prep = pre; |
7 | 2151 if (len != NULL) |
2152 *len = (int)(ptr - start); | |
2153 if (nptr != NULL) | |
16 | 2154 { |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
2155 if (negative) // account for leading '-' for decimal numbers |
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2156 { |
18757
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
2157 // avoid ubsan error for overflow |
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2158 if (un > VARNUM_MAX) |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2159 *nptr = VARNUM_MIN; |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2160 else |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2161 *nptr = -(varnumber_T)un; |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2162 } |
16 | 2163 else |
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2164 { |
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
|
2165 // prevent a larg unsigned number to become negative |
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2166 if (un > VARNUM_MAX) |
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2167 un = VARNUM_MAX; |
9389
32e34e574716
commit https://github.com/vim/vim/commit/22fcfad29276bd5f317faf516637dcd491b96a12
Christian Brabandt <cb@256bit.org>
parents:
8643
diff
changeset
|
2168 *nptr = (varnumber_T)un; |
10658
77d66e9ac0ab
patch 8.0.0219: ubsan reports errors for overflow
Christian Brabandt <cb@256bit.org>
parents:
10549
diff
changeset
|
2169 } |
16 | 2170 } |
7 | 2171 if (unptr != NULL) |
2172 *unptr = un; | |
2173 } | |
2174 | |
2175 /* | |
2176 * Return the value of a single hex character. | |
2177 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
2178 */ | |
2179 int | |
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2180 hex2nr(int c) |
7 | 2181 { |
2182 if (c >= 'a' && c <= 'f') | |
2183 return c - 'a' + 10; | |
2184 if (c >= 'A' && c <= 'F') | |
2185 return c - 'A' + 10; | |
2186 return c - '0'; | |
2187 } | |
2188 | |
2189 /* | |
2190 * Convert two hex characters to a byte. | |
2191 * Return -1 if one of the characters is not hex. | |
2192 */ | |
2193 int | |
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2194 hexhex2nr(char_u *p) |
7 | 2195 { |
2196 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
2197 return -1; | |
2198 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
2199 } | |
2200 | |
2201 /* | |
2202 * Return TRUE if "str" starts with a backslash that should be removed. | |
16054
78faa25f9698
patch 8.1.1032: warnings from clang static analyzer
Bram Moolenaar <Bram@vim.org>
parents:
15850
diff
changeset
|
2203 * For MS-DOS, MSWIN and OS/2 this is only done when the character after the |
7 | 2204 * backslash is not a normal file name character. |
2205 * '$' is a valid file name character, we don't remove the backslash before | |
2206 * it. This means it is not possible to use an environment variable after a | |
2207 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
2208 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
2209 * removed. Assume a file name doesn't start with a space. | |
2210 * For multi-byte names, never remove a backslash before a non-ascii | |
2211 * character, assume that all multi-byte characters are valid file name | |
2212 * characters. | |
2213 */ | |
2214 int | |
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2215 rem_backslash(char_u *str) |
7 | 2216 { |
2217 #ifdef BACKSLASH_IN_FILENAME | |
2218 return (str[0] == '\\' | |
2219 && str[1] < 0x80 | |
2220 && (str[1] == ' ' | |
2221 || (str[1] != NUL | |
2222 && str[1] != '*' | |
2223 && str[1] != '?' | |
2224 && !vim_isfilec(str[1])))); | |
2225 #else | |
2226 return (str[0] == '\\' && str[1] != NUL); | |
2227 #endif | |
2228 } | |
2229 | |
2230 /* | |
2231 * Halve the number of backslashes in a file name argument. | |
2232 * For MS-DOS we only do this if the character after the backslash | |
2233 * is not a normal file character. | |
2234 */ | |
2235 void | |
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2236 backslash_halve(char_u *p) |
7 | 2237 { |
2238 for ( ; *p; ++p) | |
2239 if (rem_backslash(p)) | |
1621 | 2240 STRMOVE(p, p + 1); |
7 | 2241 } |
2242 | |
2243 /* | |
2244 * 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
|
2245 * However, returns "p" when out of memory. |
7 | 2246 */ |
2247 char_u * | |
7817
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
2248 backslash_halve_save(char_u *p) |
7 | 2249 { |
2250 char_u *res; | |
2251 | |
2252 res = vim_strsave(p); | |
2253 if (res == NULL) | |
2254 return p; | |
2255 backslash_halve(res); | |
2256 return res; | |
2257 } |