Mercurial > vim
annotate src/charset.c @ 27752:c1d1639b52dd v8.2.4402
patch 8.2.4402: missing parenthesis may cause unexpected problems
Commit: https://github.com/vim/vim/commit/ae6f1d8b14c2f63811ee83ef14e32086fb3e9b83
Author: kylo252 <59826753+kylo252@users.noreply.github.com>
Date: Wed Feb 16 19:24:07 2022 +0000
patch 8.2.4402: missing parenthesis may cause unexpected problems
Problem: Missing parenthesis may cause unexpected problems.
Solution: Add more parenthesis is macros. (closes https://github.com/vim/vim/issues/9788)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Wed, 16 Feb 2022 20:30:03 +0100 |
| parents | fb4c30606b4a |
| children | bfce04a99561 |
| rev | line source |
|---|---|
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 #include "vim.h" | |
| 11 | |
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12 #if defined(HAVE_WCHAR_H) |
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13 # include <wchar.h> // for towupper() and towlower() |
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14 #endif |
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15 static int win_nolbr_chartabsize(win_T *wp, char_u *s, colnr_T col, int *headp); |
| 7 | 16 |
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17 static unsigned nr2hex(unsigned c); |
| 7 | 18 |
| 19 static int chartab_initialized = FALSE; | |
| 20 | |
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21 // b_chartab[] is an array of 32 bytes, each bit representing one of the |
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22 // characters 0-255. |
| 7 | 23 #define SET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] |= (1 << ((c) & 0x7)) |
| 24 #define RESET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] &= ~(1 << ((c) & 0x7)) | |
| 25 #define GET_CHARTAB(buf, c) ((buf)->b_chartab[(unsigned)(c) >> 3] & (1 << ((c) & 0x7))) | |
| 26 | |
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27 // table used below, see init_chartab() for an explanation |
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28 static char_u g_chartab[256]; |
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29 |
| 7 | 30 /* |
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31 * Flags for g_chartab[]. |
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32 */ |
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33 #define CT_CELL_MASK 0x07 // mask: nr of display cells (1, 2 or 4) |
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34 #define CT_PRINT_CHAR 0x10 // flag: set for printable chars |
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35 #define CT_ID_CHAR 0x20 // flag: set for ID chars |
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36 #define CT_FNAME_CHAR 0x40 // flag: set for file name chars |
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37 |
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38 static int in_win_border(win_T *wp, colnr_T vcol); |
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39 |
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40 /* |
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41 * Fill g_chartab[]. Also fills curbuf->b_chartab[] with flags for keyword |
| 7 | 42 * characters for current buffer. |
| 43 * | |
| 44 * Depends on the option settings 'iskeyword', 'isident', 'isfname', | |
| 45 * 'isprint' and 'encoding'. | |
| 46 * | |
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47 * The index in g_chartab[] depends on 'encoding': |
| 7 | 48 * - For non-multi-byte index with the byte (same as the character). |
| 49 * - For DBCS index with the first byte. | |
| 50 * - For UTF-8 index with the character (when first byte is up to 0x80 it is | |
| 51 * the same as the character, if the first byte is 0x80 and above it depends | |
| 52 * on further bytes). | |
| 53 * | |
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54 * The contents of g_chartab[]: |
| 7 | 55 * - The lower two bits, masked by CT_CELL_MASK, give the number of display |
| 56 * cells the character occupies (1 or 2). Not valid for UTF-8 above 0x80. | |
| 57 * - CT_PRINT_CHAR bit is set when the character is printable (no need to | |
| 58 * translate the character before displaying it). Note that only DBCS | |
| 59 * characters can have 2 display cells and still be printable. | |
| 60 * - CT_FNAME_CHAR bit is set when the character can be in a file name. | |
| 61 * - CT_ID_CHAR bit is set when the character can be in an identifier. | |
| 62 * | |
| 63 * Return FAIL if 'iskeyword', 'isident', 'isfname' or 'isprint' option has an | |
| 64 * error, OK otherwise. | |
| 65 */ | |
| 66 int | |
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67 init_chartab(void) |
| 7 | 68 { |
| 69 return buf_init_chartab(curbuf, TRUE); | |
| 70 } | |
| 71 | |
| 72 int | |
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73 buf_init_chartab( |
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74 buf_T *buf, |
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75 int global) // FALSE: only set buf->b_chartab[] |
| 7 | 76 { |
| 77 int c; | |
| 78 int c2; | |
| 79 char_u *p; | |
| 80 int i; | |
| 81 int tilde; | |
| 82 int do_isalpha; | |
| 83 | |
| 84 if (global) | |
| 85 { | |
| 86 /* | |
| 87 * Set the default size for printable characters: | |
| 88 * From <Space> to '~' is 1 (printable), others are 2 (not printable). | |
| 89 * This also inits all 'isident' and 'isfname' flags to FALSE. | |
| 90 */ | |
| 91 c = 0; | |
| 92 while (c < ' ') | |
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93 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
| 7 | 94 while (c <= '~') |
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95 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
| 7 | 96 while (c < 256) |
| 97 { | |
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98 // UTF-8: bytes 0xa0 - 0xff are printable (latin1) |
| 7 | 99 if (enc_utf8 && c >= 0xa0) |
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100 g_chartab[c++] = CT_PRINT_CHAR + 1; |
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101 // euc-jp characters starting with 0x8e are single width |
| 7 | 102 else if (enc_dbcs == DBCS_JPNU && c == 0x8e) |
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103 g_chartab[c++] = CT_PRINT_CHAR + 1; |
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104 // other double-byte chars can be printable AND double-width |
| 7 | 105 else if (enc_dbcs != 0 && MB_BYTE2LEN(c) == 2) |
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106 g_chartab[c++] = CT_PRINT_CHAR + 2; |
| 7 | 107 else |
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108 // the rest is unprintable by default |
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109 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
| 7 | 110 } |
| 111 | |
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112 // Assume that every multi-byte char is a filename character. |
| 7 | 113 for (c = 1; c < 256; ++c) |
| 114 if ((enc_dbcs != 0 && MB_BYTE2LEN(c) > 1) | |
| 115 || (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
| 116 || (enc_utf8 && c >= 0xa0)) | |
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117 g_chartab[c] |= CT_FNAME_CHAR; |
| 7 | 118 } |
| 119 | |
| 120 /* | |
| 121 * Init word char flags all to FALSE | |
| 122 */ | |
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123 CLEAR_FIELD(buf->b_chartab); |
| 227 | 124 if (enc_dbcs != 0) |
| 125 for (c = 0; c < 256; ++c) | |
| 126 { | |
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127 // double-byte characters are probably word characters |
| 227 | 128 if (MB_BYTE2LEN(c) == 2) |
| 129 SET_CHARTAB(buf, c); | |
| 130 } | |
| 7 | 131 |
| 132 #ifdef FEAT_LISP | |
| 133 /* | |
| 134 * In lisp mode the '-' character is included in keywords. | |
| 135 */ | |
| 136 if (buf->b_p_lisp) | |
| 137 SET_CHARTAB(buf, '-'); | |
| 138 #endif | |
| 139 | |
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140 // Walk through the 'isident', 'iskeyword', 'isfname' and 'isprint' |
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141 // options Each option is a list of characters, character numbers or |
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142 // ranges, separated by commas, e.g.: "200-210,x,#-178,-" |
| 7 | 143 for (i = global ? 0 : 3; i <= 3; ++i) |
| 144 { | |
| 145 if (i == 0) | |
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146 p = p_isi; // first round: 'isident' |
| 7 | 147 else if (i == 1) |
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148 p = p_isp; // second round: 'isprint' |
| 7 | 149 else if (i == 2) |
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150 p = p_isf; // third round: 'isfname' |
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151 else // i == 3 |
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152 p = buf->b_p_isk; // fourth round: 'iskeyword' |
| 7 | 153 |
| 154 while (*p) | |
| 155 { | |
| 156 tilde = FALSE; | |
| 157 do_isalpha = FALSE; | |
| 158 if (*p == '^' && p[1] != NUL) | |
| 159 { | |
| 160 tilde = TRUE; | |
| 161 ++p; | |
| 162 } | |
| 163 if (VIM_ISDIGIT(*p)) | |
| 164 c = getdigits(&p); | |
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165 else if (has_mbyte) |
| 1955 | 166 c = mb_ptr2char_adv(&p); |
| 167 else | |
| 7 | 168 c = *p++; |
| 169 c2 = -1; | |
| 170 if (*p == '-' && p[1] != NUL) | |
| 171 { | |
| 172 ++p; | |
| 173 if (VIM_ISDIGIT(*p)) | |
| 174 c2 = getdigits(&p); | |
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175 else if (has_mbyte) |
| 1979 | 176 c2 = mb_ptr2char_adv(&p); |
| 177 else | |
| 7 | 178 c2 = *p++; |
| 179 } | |
| 1979 | 180 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
| 7 | 181 || !(*p == NUL || *p == ',')) |
| 182 return FAIL; | |
| 183 | |
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184 if (c2 == -1) // not a range |
| 7 | 185 { |
| 186 /* | |
| 187 * A single '@' (not "@-@"): | |
| 188 * Decide on letters being ID/printable/keyword chars with | |
| 189 * standard function isalpha(). This takes care of locale for | |
| 190 * single-byte characters). | |
| 191 */ | |
| 192 if (c == '@') | |
| 193 { | |
| 194 do_isalpha = TRUE; | |
| 195 c = 1; | |
| 196 c2 = 255; | |
| 197 } | |
| 198 else | |
| 199 c2 = c; | |
| 200 } | |
| 201 while (c <= c2) | |
| 202 { | |
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203 // Use the MB_ functions here, because isalpha() doesn't |
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204 // work properly when 'encoding' is "latin1" and the locale is |
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205 // "C". |
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206 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c)) |
| 7 | 207 { |
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208 if (i == 0) // (re)set ID flag |
| 7 | 209 { |
| 210 if (tilde) | |
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211 g_chartab[c] &= ~CT_ID_CHAR; |
| 7 | 212 else |
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213 g_chartab[c] |= CT_ID_CHAR; |
| 7 | 214 } |
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215 else if (i == 1) // (re)set printable |
| 7 | 216 { |
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217 if ((c < ' ' || c > '~' |
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218 // For double-byte we keep the cell width, so |
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219 // that we can detect it from the first byte. |
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220 ) && !(enc_dbcs && MB_BYTE2LEN(c) == 2)) |
| 7 | 221 { |
| 222 if (tilde) | |
| 223 { | |
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224 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) |
| 7 | 225 + ((dy_flags & DY_UHEX) ? 4 : 2); |
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226 g_chartab[c] &= ~CT_PRINT_CHAR; |
| 7 | 227 } |
| 228 else | |
| 229 { | |
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230 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) + 1; |
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231 g_chartab[c] |= CT_PRINT_CHAR; |
| 7 | 232 } |
| 233 } | |
| 234 } | |
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235 else if (i == 2) // (re)set fname flag |
| 7 | 236 { |
| 237 if (tilde) | |
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238 g_chartab[c] &= ~CT_FNAME_CHAR; |
| 7 | 239 else |
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240 g_chartab[c] |= CT_FNAME_CHAR; |
| 7 | 241 } |
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242 else // i == 3 (re)set keyword flag |
| 7 | 243 { |
| 244 if (tilde) | |
| 245 RESET_CHARTAB(buf, c); | |
| 246 else | |
| 247 SET_CHARTAB(buf, c); | |
| 248 } | |
| 249 } | |
| 250 ++c; | |
| 251 } | |
| 4096 | 252 |
| 253 c = *p; | |
| 7 | 254 p = skip_to_option_part(p); |
| 4096 | 255 if (c == ',' && *p == NUL) |
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256 // Trailing comma is not allowed. |
| 4096 | 257 return FAIL; |
| 7 | 258 } |
| 259 } | |
| 260 chartab_initialized = TRUE; | |
| 261 return OK; | |
| 262 } | |
| 263 | |
| 264 /* | |
| 265 * Translate any special characters in buf[bufsize] in-place. | |
| 266 * The result is a string with only printable characters, but if there is not | |
| 267 * enough room, not all characters will be translated. | |
| 268 */ | |
| 269 void | |
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270 trans_characters( |
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271 char_u *buf, |
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272 int bufsize) |
| 7 | 273 { |
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274 int len; // length of string needing translation |
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275 int room; // room in buffer after string |
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276 char_u *trs; // translated character |
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277 int trs_len; // length of trs[] |
| 7 | 278 |
| 279 len = (int)STRLEN(buf); | |
| 280 room = bufsize - len; | |
| 281 while (*buf != 0) | |
| 282 { | |
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283 // Assume a multi-byte character doesn't need translation. |
| 474 | 284 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
| 7 | 285 len -= trs_len; |
| 286 else | |
| 287 { | |
| 288 trs = transchar_byte(*buf); | |
| 289 trs_len = (int)STRLEN(trs); | |
| 290 if (trs_len > 1) | |
| 291 { | |
| 292 room -= trs_len - 1; | |
| 293 if (room <= 0) | |
| 294 return; | |
| 295 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
| 296 } | |
| 297 mch_memmove(buf, trs, (size_t)trs_len); | |
| 298 --len; | |
| 299 } | |
| 300 buf += trs_len; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 /* | |
| 305 * Translate a string into allocated memory, replacing special chars with | |
| 306 * printable chars. Returns NULL when out of memory. | |
| 307 */ | |
| 308 char_u * | |
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309 transstr(char_u *s) |
| 7 | 310 { |
| 311 char_u *res; | |
| 312 char_u *p; | |
| 313 int l, len, c; | |
| 314 char_u hexbuf[11]; | |
| 315 | |
| 316 if (has_mbyte) | |
| 317 { | |
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318 // Compute the length of the result, taking account of unprintable |
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319 // multi-byte characters. |
| 7 | 320 len = 0; |
| 321 p = s; | |
| 322 while (*p != NUL) | |
| 323 { | |
| 474 | 324 if ((l = (*mb_ptr2len)(p)) > 1) |
| 7 | 325 { |
| 326 c = (*mb_ptr2char)(p); | |
| 327 p += l; | |
| 328 if (vim_isprintc(c)) | |
| 329 len += l; | |
| 330 else | |
| 331 { | |
| 332 transchar_hex(hexbuf, c); | |
| 835 | 333 len += (int)STRLEN(hexbuf); |
| 7 | 334 } |
| 335 } | |
| 336 else | |
| 337 { | |
| 338 l = byte2cells(*p++); | |
| 339 if (l > 0) | |
| 340 len += l; | |
| 341 else | |
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342 len += 4; // illegal byte sequence |
| 7 | 343 } |
| 344 } | |
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345 res = alloc(len + 1); |
| 7 | 346 } |
| 347 else | |
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348 res = alloc(vim_strsize(s) + 1); |
| 7 | 349 if (res != NULL) |
| 350 { | |
| 351 *res = NUL; | |
| 352 p = s; | |
| 353 while (*p != NUL) | |
| 354 { | |
| 474 | 355 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 7 | 356 { |
| 357 c = (*mb_ptr2char)(p); | |
| 358 if (vim_isprintc(c)) | |
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359 STRNCAT(res, p, l); // append printable multi-byte char |
| 7 | 360 else |
| 361 transchar_hex(res + STRLEN(res), c); | |
| 362 p += l; | |
| 363 } | |
| 364 else | |
| 365 STRCAT(res, transchar_byte(*p++)); | |
| 366 } | |
| 367 } | |
| 368 return res; | |
| 369 } | |
| 370 | |
| 371 /* | |
| 221 | 372 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
| 373 * current locale. | |
| 130 | 374 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
| 375 * Otherwise puts the result in "buf[buflen]". | |
| 7 | 376 */ |
| 377 char_u * | |
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378 str_foldcase( |
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379 char_u *str, |
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380 int orglen, |
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381 char_u *buf, |
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382 int buflen) |
| 7 | 383 { |
| 384 garray_T ga; | |
| 385 int i; | |
| 130 | 386 int len = orglen; |
| 7 | 387 |
| 388 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
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389 #define GA_PTR(i) ((char_u *)ga.ga_data + (i)) |
| 130 | 390 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
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391 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + (i)) |
| 7 | 392 |
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393 // Copy "str" into "buf" or allocated memory, unmodified. |
| 130 | 394 if (buf == NULL) |
| 395 { | |
| 396 ga_init2(&ga, 1, 10); | |
| 397 if (ga_grow(&ga, len + 1) == FAIL) | |
| 398 return NULL; | |
| 399 mch_memmove(ga.ga_data, str, (size_t)len); | |
| 400 ga.ga_len = len; | |
| 401 } | |
| 402 else | |
| 403 { | |
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404 if (len >= buflen) // Ugly! |
| 130 | 405 len = buflen - 1; |
| 406 mch_memmove(buf, str, (size_t)len); | |
| 407 } | |
| 408 if (buf == NULL) | |
| 409 GA_CHAR(len) = NUL; | |
| 410 else | |
| 411 buf[len] = NUL; | |
| 7 | 412 |
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413 // Make each character lower case. |
| 7 | 414 i = 0; |
| 130 | 415 while (STR_CHAR(i) != NUL) |
| 7 | 416 { |
| 130 | 417 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
| 7 | 418 { |
| 419 if (enc_utf8) | |
| 420 { | |
| 1654 | 421 int c = utf_ptr2char(STR_PTR(i)); |
| 3263 | 422 int olen = utf_ptr2len(STR_PTR(i)); |
| 1654 | 423 int lc = utf_tolower(c); |
| 7 | 424 |
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425 // Only replace the character when it is not an invalid |
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426 // sequence (ASCII character or more than one byte) and |
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427 // utf_tolower() doesn't return the original character. |
| 3263 | 428 if ((c < 0x80 || olen > 1) && c != lc) |
| 7 | 429 { |
| 3263 | 430 int nlen = utf_char2len(lc); |
| 7 | 431 |
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432 // If the byte length changes need to shift the following |
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433 // characters forward or backward. |
| 3263 | 434 if (olen != nlen) |
| 7 | 435 { |
| 3263 | 436 if (nlen > olen) |
| 130 | 437 { |
| 3263 | 438 if (buf == NULL |
| 439 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
| 440 : len + nlen - olen >= buflen) | |
| 7 | 441 { |
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442 // out of memory, keep old char |
| 7 | 443 lc = c; |
| 3263 | 444 nlen = olen; |
| 7 | 445 } |
| 130 | 446 } |
| 3263 | 447 if (olen != nlen) |
| 7 | 448 { |
| 130 | 449 if (buf == NULL) |
| 450 { | |
| 3263 | 451 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
| 452 ga.ga_len += nlen - olen; | |
| 130 | 453 } |
| 454 else | |
| 455 { | |
| 3263 | 456 STRMOVE(buf + i + nlen, buf + i + olen); |
| 457 len += nlen - olen; | |
| 130 | 458 } |
| 7 | 459 } |
| 460 } | |
| 130 | 461 (void)utf_char2bytes(lc, STR_PTR(i)); |
| 7 | 462 } |
| 463 } | |
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464 // skip to next multi-byte char |
| 474 | 465 i += (*mb_ptr2len)(STR_PTR(i)); |
| 7 | 466 } |
| 467 else | |
| 468 { | |
| 130 | 469 if (buf == NULL) |
| 470 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
| 471 else | |
| 472 buf[i] = TOLOWER_LOC(buf[i]); | |
| 7 | 473 ++i; |
| 474 } | |
| 475 } | |
| 476 | |
| 130 | 477 if (buf == NULL) |
| 478 return (char_u *)ga.ga_data; | |
| 479 return buf; | |
| 7 | 480 } |
| 481 | |
| 482 /* | |
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483 * Catch 22: g_chartab[] can't be initialized before the options are |
| 7 | 484 * initialized, and initializing options may cause transchar() to be called! |
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485 * When chartab_initialized == FALSE don't use g_chartab[]. |
| 7 | 486 * Does NOT work for multi-byte characters, c must be <= 255. |
| 487 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
| 488 * character! | |
| 489 */ | |
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490 static char_u transchar_charbuf[7]; |
| 7 | 491 |
| 492 char_u * | |
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493 transchar(int c) |
| 7 | 494 { |
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495 return transchar_buf(curbuf, c); |
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496 } |
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497 |
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498 char_u * |
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499 transchar_buf(buf_T *buf, int c) |
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500 { |
| 7 | 501 int i; |
| 502 | |
| 503 i = 0; | |
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504 if (IS_SPECIAL(c)) // special key code, display as ~@ char |
| 7 | 505 { |
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506 transchar_charbuf[0] = '~'; |
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507 transchar_charbuf[1] = '@'; |
| 7 | 508 i = 2; |
| 509 c = K_SECOND(c); | |
| 510 } | |
| 511 | |
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512 if ((!chartab_initialized && ((c >= ' ' && c <= '~'))) |
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513 || (c < 256 && vim_isprintc_strict(c))) |
| 7 | 514 { |
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515 // printable character |
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516 transchar_charbuf[i] = c; |
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517 transchar_charbuf[i + 1] = NUL; |
| 7 | 518 } |
| 519 else | |
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520 transchar_nonprint(buf, transchar_charbuf + i, c); |
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521 return transchar_charbuf; |
| 7 | 522 } |
| 523 | |
| 524 /* | |
| 525 * Like transchar(), but called with a byte instead of a character. Checks | |
| 526 * for an illegal UTF-8 byte. | |
| 527 */ | |
| 528 char_u * | |
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529 transchar_byte(int c) |
| 7 | 530 { |
| 531 if (enc_utf8 && c >= 0x80) | |
| 532 { | |
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533 transchar_nonprint(curbuf, transchar_charbuf, c); |
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534 return transchar_charbuf; |
| 7 | 535 } |
| 536 return transchar(c); | |
| 537 } | |
| 538 | |
| 539 /* | |
| 540 * Convert non-printable character to two or more printable characters in | |
|
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541 * "buf[]". "charbuf" needs to be able to hold five bytes. |
| 7 | 542 * Does NOT work for multi-byte characters, c must be <= 255. |
| 543 */ | |
| 544 void | |
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545 transchar_nonprint(buf_T *buf, char_u *charbuf, int c) |
| 7 | 546 { |
| 547 if (c == NL) | |
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548 c = NUL; // we use newline in place of a NUL |
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549 else if (c == CAR && get_fileformat(buf) == EOL_MAC) |
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550 c = NL; // we use CR in place of NL in this case |
| 7 | 551 |
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552 if (dy_flags & DY_UHEX) // 'display' has "uhex" |
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553 transchar_hex(charbuf, c); |
| 7 | 554 |
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555 else if (c <= 0x7f) // 0x00 - 0x1f and 0x7f |
| 7 | 556 { |
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557 charbuf[0] = '^'; |
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558 charbuf[1] = c ^ 0x40; // DEL displayed as ^? |
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559 charbuf[2] = NUL; |
| 7 | 560 } |
| 561 else if (enc_utf8 && c >= 0x80) | |
| 562 { | |
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563 transchar_hex(charbuf, c); |
| 7 | 564 } |
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565 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) // 0xa0 - 0xfe |
| 7 | 566 { |
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567 charbuf[0] = '|'; |
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568 charbuf[1] = c - 0x80; |
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569 charbuf[2] = NUL; |
| 7 | 570 } |
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571 else // 0x80 - 0x9f and 0xff |
| 7 | 572 { |
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573 charbuf[0] = '~'; |
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574 charbuf[1] = (c - 0x80) ^ 0x40; // 0xff displayed as ~? |
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575 charbuf[2] = NUL; |
| 7 | 576 } |
| 577 } | |
| 578 | |
| 579 void | |
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580 transchar_hex(char_u *buf, int c) |
| 7 | 581 { |
| 582 int i = 0; | |
| 583 | |
| 584 buf[0] = '<'; | |
| 585 if (c > 255) | |
| 586 { | |
| 587 buf[++i] = nr2hex((unsigned)c >> 12); | |
| 588 buf[++i] = nr2hex((unsigned)c >> 8); | |
| 589 } | |
| 590 buf[++i] = nr2hex((unsigned)c >> 4); | |
| 1869 | 591 buf[++i] = nr2hex((unsigned)c); |
| 7 | 592 buf[++i] = '>'; |
| 593 buf[++i] = NUL; | |
| 594 } | |
| 595 | |
| 596 /* | |
| 597 * Convert the lower 4 bits of byte "c" to its hex character. | |
| 598 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
| 599 * function key 1. | |
| 600 */ | |
| 1869 | 601 static unsigned |
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602 nr2hex(unsigned c) |
| 7 | 603 { |
| 604 if ((c & 0xf) <= 9) | |
| 605 return (c & 0xf) + '0'; | |
| 606 return (c & 0xf) - 10 + 'a'; | |
| 607 } | |
| 608 | |
| 609 /* | |
| 610 * Return number of display cells occupied by byte "b". | |
| 611 * Caller must make sure 0 <= b <= 255. | |
| 612 * For multi-byte mode "b" must be the first byte of a character. | |
| 613 * A TAB is counted as two cells: "^I". | |
| 614 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
| 615 * cells depends on further bytes. | |
| 616 */ | |
| 617 int | |
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618 byte2cells(int b) |
| 7 | 619 { |
| 620 if (enc_utf8 && b >= 0x80) | |
| 621 return 0; | |
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622 return (g_chartab[b] & CT_CELL_MASK); |
| 7 | 623 } |
| 624 | |
| 625 /* | |
| 626 * Return number of display cells occupied by character "c". | |
| 627 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
| 628 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 629 */ | |
| 630 int | |
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631 char2cells(int c) |
| 7 | 632 { |
| 633 if (IS_SPECIAL(c)) | |
| 634 return char2cells(K_SECOND(c)) + 2; | |
| 635 if (c >= 0x80) | |
| 636 { | |
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637 // UTF-8: above 0x80 need to check the value |
| 7 | 638 if (enc_utf8) |
| 639 return utf_char2cells(c); | |
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640 // DBCS: double-byte means double-width, except for euc-jp with first |
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641 // byte 0x8e |
| 7 | 642 if (enc_dbcs != 0 && c >= 0x100) |
| 643 { | |
| 644 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
| 645 return 1; | |
| 646 return 2; | |
| 647 } | |
| 648 } | |
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649 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
| 7 | 650 } |
| 651 | |
| 652 /* | |
| 653 * Return number of display cells occupied by character at "*p". | |
| 654 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 655 */ | |
| 656 int | |
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657 ptr2cells(char_u *p) |
| 7 | 658 { |
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659 // For UTF-8 we need to look at more bytes if the first byte is >= 0x80. |
| 7 | 660 if (enc_utf8 && *p >= 0x80) |
| 661 return utf_ptr2cells(p); | |
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662 // For DBCS we can tell the cell count from the first byte. |
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663 return (g_chartab[*p] & CT_CELL_MASK); |
| 7 | 664 } |
| 665 | |
| 666 /* | |
| 3292 | 667 * Return the number of character cells string "s" will take on the screen, |
| 7 | 668 * counting TABs as two characters: "^I". |
| 669 */ | |
| 670 int | |
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671 vim_strsize(char_u *s) |
| 7 | 672 { |
| 673 return vim_strnsize(s, (int)MAXCOL); | |
| 674 } | |
| 675 | |
| 676 /* | |
| 3292 | 677 * Return the number of character cells string "s[len]" will take on the |
| 678 * screen, counting TABs as two characters: "^I". | |
| 7 | 679 */ |
| 680 int | |
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681 vim_strnsize(char_u *s, int len) |
| 7 | 682 { |
| 683 int size = 0; | |
| 684 | |
| 685 while (*s != NUL && --len >= 0) | |
| 686 if (has_mbyte) | |
| 687 { | |
| 474 | 688 int l = (*mb_ptr2len)(s); |
| 7 | 689 |
| 690 size += ptr2cells(s); | |
| 691 s += l; | |
| 692 len -= l - 1; | |
| 693 } | |
| 694 else | |
| 695 size += byte2cells(*s++); | |
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696 |
| 7 | 697 return size; |
| 698 } | |
| 699 | |
| 700 /* | |
| 701 * Return the number of characters 'c' will take on the screen, taking | |
| 702 * into account the size of a tab. | |
| 703 * Use a define to make it fast, this is used very often!!! | |
| 704 * Also see getvcol() below. | |
| 705 */ | |
| 706 | |
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707 #ifdef FEAT_VARTABS |
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708 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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709 if (*(p) == TAB && (!(wp)->w_p_list || (wp)->w_lcs_chars.tab1)) \ |
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710 { \ |
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711 return tabstop_padding(col, (buf)->b_p_ts, (buf)->b_p_vts_array); \ |
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712 } \ |
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713 else \ |
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714 return ptr2cells(p); |
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715 #else |
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716 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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717 if (*(p) == TAB && (!(wp)->w_p_list || wp->w_lcs_chars.tab1)) \ |
| 7 | 718 { \ |
| 719 int ts; \ | |
| 720 ts = (buf)->b_p_ts; \ | |
| 721 return (int)(ts - (col % ts)); \ | |
| 722 } \ | |
| 723 else \ | |
| 724 return ptr2cells(p); | |
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725 #endif |
| 7 | 726 |
| 727 int | |
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728 chartabsize(char_u *p, colnr_T col) |
| 7 | 729 { |
| 730 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
| 731 } | |
| 732 | |
| 733 #ifdef FEAT_LINEBREAK | |
| 734 static int | |
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735 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
| 7 | 736 { |
| 737 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
| 738 } | |
| 739 #endif | |
| 740 | |
| 741 /* | |
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742 * Return the number of characters the string 's' will take on the screen, |
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743 * taking into account the size of a tab. |
| 7 | 744 */ |
| 745 int | |
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746 linetabsize(char_u *s) |
| 7 | 747 { |
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748 return linetabsize_col(0, s); |
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749 } |
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750 |
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751 /* |
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752 * Like linetabsize(), but starting at column "startcol". |
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753 */ |
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754 int |
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755 linetabsize_col(int startcol, char_u *s) |
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756 { |
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757 colnr_T col = startcol; |
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758 char_u *line = s; // pointer to start of line, for breakindent |
| 7 | 759 |
| 760 while (*s != NUL) | |
| 5995 | 761 col += lbr_chartabsize_adv(line, &s, col); |
| 7 | 762 return (int)col; |
| 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, char_u *line, colnr_T len) |
| 7 | 770 { |
| 771 colnr_T col = 0; | |
| 772 char_u *s; | |
| 773 | |
| 5995 | 774 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
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775 MB_PTR_ADV(s)) |
| 5995 | 776 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
| 7 | 777 return (int)col; |
| 778 } | |
| 779 | |
| 780 /* | |
| 42 | 781 * Return TRUE if 'c' is a normal identifier character: |
| 782 * Letters and characters from the 'isident' option. | |
| 7 | 783 */ |
| 784 int | |
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785 vim_isIDc(int c) |
| 7 | 786 { |
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787 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
| 7 | 788 } |
| 789 | |
| 790 /* | |
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791 * Like vim_isIDc() but not using the 'isident' option: letters, numbers and |
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792 * underscore. |
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793 */ |
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794 int |
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795 vim_isNormalIDc(int c) |
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796 { |
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797 return ASCII_ISALNUM(c) || c == '_'; |
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798 } |
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799 |
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800 /* |
| 7 | 801 * return TRUE if 'c' is a keyword character: Letters and characters from |
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802 * 'iskeyword' option for the current buffer. |
| 7 | 803 * For multi-byte characters mb_get_class() is used (builtin rules). |
| 804 */ | |
| 805 int | |
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806 vim_iswordc(int c) |
| 7 | 807 { |
| 4043 | 808 return vim_iswordc_buf(c, curbuf); |
| 809 } | |
| 810 | |
| 811 int | |
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812 vim_iswordc_buf(int c, buf_T *buf) |
| 4043 | 813 { |
| 7 | 814 if (c >= 0x100) |
| 815 { | |
| 816 if (enc_dbcs != 0) | |
| 1869 | 817 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
| 7 | 818 if (enc_utf8) |
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819 return utf_class_buf(c, buf) >= 2; |
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820 return FALSE; |
| 7 | 821 } |
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822 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
| 7 | 823 } |
| 824 | |
| 825 /* | |
| 826 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
| 827 */ | |
| 828 int | |
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829 vim_iswordp(char_u *p) |
| 7 | 830 { |
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831 return vim_iswordp_buf(p, curbuf); |
| 7 | 832 } |
| 833 | |
| 834 int | |
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835 vim_iswordp_buf(char_u *p, buf_T *buf) |
| 7 | 836 { |
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837 int c = *p; |
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838 |
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839 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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840 c = (*mb_ptr2char)(p); |
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841 return vim_iswordc_buf(c, buf); |
| 7 | 842 } |
| 843 | |
| 844 /* | |
| 845 * return TRUE if 'c' is a valid file-name character | |
| 846 * Assume characters above 0x100 are valid (multi-byte). | |
| 847 */ | |
| 848 int | |
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849 vim_isfilec(int c) |
| 7 | 850 { |
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851 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
| 7 | 852 } |
| 853 | |
| 854 /* | |
| 1369 | 855 * return TRUE if 'c' is a valid file-name character or a wildcard character |
| 856 * Assume characters above 0x100 are valid (multi-byte). | |
| 857 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
| 858 * returns false. | |
| 859 */ | |
| 860 int | |
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861 vim_isfilec_or_wc(int c) |
| 1369 | 862 { |
| 863 char_u buf[2]; | |
| 864 | |
| 865 buf[0] = (char_u)c; | |
| 866 buf[1] = NUL; | |
| 867 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
| 868 } | |
| 869 | |
| 870 /* | |
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871 * Return TRUE if 'c' is a printable character. |
| 7 | 872 * Assume characters above 0x100 are printable (multi-byte), except for |
| 873 * Unicode. | |
| 874 */ | |
| 875 int | |
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876 vim_isprintc(int c) |
| 7 | 877 { |
| 878 if (enc_utf8 && c >= 0x100) | |
| 879 return utf_printable(c); | |
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880 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 881 } |
| 882 | |
| 883 /* | |
| 884 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
| 885 * byte of a double-byte character. | |
| 886 */ | |
| 887 int | |
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888 vim_isprintc_strict(int c) |
| 7 | 889 { |
| 890 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
| 891 return FALSE; | |
| 892 if (enc_utf8 && c >= 0x100) | |
| 893 return utf_printable(c); | |
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894 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 895 } |
| 896 | |
| 897 /* | |
| 898 * like chartabsize(), but also check for line breaks on the screen | |
| 899 */ | |
| 900 int | |
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901 lbr_chartabsize( |
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902 char_u *line UNUSED, // start of the line |
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903 unsigned char *s, |
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904 colnr_T col) |
| 7 | 905 { |
| 906 #ifdef FEAT_LINEBREAK | |
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907 if (!curwin->w_p_lbr && *get_showbreak_value(curwin) == NUL |
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908 && !curwin->w_p_bri) |
| 7 | 909 { |
| 910 #endif | |
| 911 if (curwin->w_p_wrap) | |
| 912 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
| 913 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
| 914 #ifdef FEAT_LINEBREAK | |
| 915 } | |
| 5995 | 916 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
| 7 | 917 #endif |
| 918 } | |
| 919 | |
| 920 /* | |
| 921 * Call lbr_chartabsize() and advance the pointer. | |
| 922 */ | |
| 923 int | |
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924 lbr_chartabsize_adv( |
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925 char_u *line, // start of the line |
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926 char_u **s, |
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927 colnr_T col) |
| 7 | 928 { |
| 929 int retval; | |
| 930 | |
| 5995 | 931 retval = lbr_chartabsize(line, *s, col); |
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932 MB_PTR_ADV(*s); |
| 7 | 933 return retval; |
| 934 } | |
| 935 | |
| 936 /* | |
| 937 * This function is used very often, keep it fast!!!! | |
| 938 * | |
| 939 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
| 940 * string at start of line. Warning: *headp is only set if it's a non-zero | |
| 941 * value, init to 0 before calling. | |
| 942 */ | |
| 943 int | |
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944 win_lbr_chartabsize( |
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945 win_T *wp, |
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946 char_u *line UNUSED, // start of the line |
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947 char_u *s, |
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948 colnr_T col, |
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949 int *headp UNUSED) |
| 7 | 950 { |
| 951 #ifdef FEAT_LINEBREAK | |
| 952 int c; | |
| 953 int size; | |
| 954 colnr_T col2; | |
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955 colnr_T col_adj = 0; // col + screen size of tab |
| 7 | 956 colnr_T colmax; |
| 957 int added; | |
| 958 int mb_added = 0; | |
| 959 int numberextra; | |
| 960 char_u *ps; | |
| 961 int tab_corr = (*s == TAB); | |
| 236 | 962 int n; |
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963 char_u *sbr; |
| 7 | 964 |
| 965 /* | |
| 5995 | 966 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
| 7 | 967 */ |
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968 if (!wp->w_p_lbr && !wp->w_p_bri && *get_showbreak_value(wp) == NUL) |
| 7 | 969 #endif |
| 970 { | |
| 971 if (wp->w_p_wrap) | |
| 972 return win_nolbr_chartabsize(wp, s, col, headp); | |
| 973 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
| 974 } | |
| 975 | |
| 976 #ifdef FEAT_LINEBREAK | |
| 977 /* | |
| 978 * First get normal size, without 'linebreak' | |
| 979 */ | |
| 980 size = win_chartabsize(wp, s, col); | |
| 981 c = *s; | |
| 6024 | 982 if (tab_corr) |
| 983 col_adj = size - 1; | |
| 7 | 984 |
| 985 /* | |
| 986 * If 'linebreak' set check at a blank before a non-blank if the line | |
| 987 * needs a break here | |
| 988 */ | |
| 989 if (wp->w_p_lbr | |
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990 && VIM_ISBREAK(c) |
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991 && !VIM_ISBREAK((int)s[1]) |
| 7 | 992 && wp->w_p_wrap |
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993 && wp->w_width != 0) |
| 7 | 994 { |
| 995 /* | |
| 996 * Count all characters from first non-blank after a blank up to next | |
| 997 * non-blank after a blank. | |
| 998 */ | |
| 999 numberextra = win_col_off(wp); | |
| 1000 col2 = col; | |
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1001 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
| 7 | 1002 if (col >= colmax) |
| 236 | 1003 { |
| 6024 | 1004 colmax += col_adj; |
| 1005 n = colmax + win_col_off2(wp); | |
| 236 | 1006 if (n > 0) |
| 6024 | 1007 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
| 236 | 1008 } |
| 1009 | |
| 7 | 1010 for (;;) |
| 1011 { | |
| 1012 ps = s; | |
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1013 MB_PTR_ADV(s); |
| 7 | 1014 c = *s; |
| 1015 if (!(c != NUL | |
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1016 && (VIM_ISBREAK(c) |
|
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|
1017 || (!VIM_ISBREAK(c) |
|
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|
1018 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
| 7 | 1019 break; |
| 1020 | |
| 1021 col2 += win_chartabsize(wp, s, col2); | |
|
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|
1022 if (col2 >= colmax) // doesn't fit |
| 7 | 1023 { |
| 6024 | 1024 size = colmax - col + col_adj; |
| 7 | 1025 break; |
| 1026 } | |
| 1027 } | |
| 1028 } | |
| 1029 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
| 1030 && wp->w_p_wrap && in_win_border(wp, col)) | |
| 1031 { | |
|
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|
1032 ++size; // Count the ">" in the last column. |
| 7 | 1033 mb_added = 1; |
| 1034 } | |
| 1035 | |
| 1036 /* | |
| 5995 | 1037 * May have to add something for 'breakindent' and/or 'showbreak' |
| 1038 * string at start of line. | |
| 7 | 1039 * Set *headp to the size of what we add. |
| 1040 */ | |
| 1041 added = 0; | |
|
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|
1042 sbr = get_showbreak_value(wp); |
|
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|
1043 if ((*sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
| 7 | 1044 { |
| 6503 | 1045 colnr_T sbrlen = 0; |
| 1046 int numberwidth = win_col_off(wp); | |
| 1047 | |
| 1048 numberextra = numberwidth; | |
| 7 | 1049 col += numberextra + mb_added; |
|
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|
1050 if (col >= (colnr_T)wp->w_width) |
| 7 | 1051 { |
|
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|
1052 col -= wp->w_width; |
|
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|
1053 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
| 6503 | 1054 if (col >= numberextra && numberextra > 0) |
| 6312 | 1055 col %= numberextra; |
|
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|
1056 if (*sbr != NUL) |
| 6288 | 1057 { |
|
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1058 sbrlen = (colnr_T)MB_CHARLEN(sbr); |
| 6288 | 1059 if (col >= sbrlen) |
| 1060 col -= sbrlen; | |
| 1061 } | |
| 6503 | 1062 if (col >= numberextra && numberextra > 0) |
| 7 | 1063 col = col % numberextra; |
| 6503 | 1064 else if (col > 0 && numberextra > 0) |
| 1065 col += numberwidth - win_col_off2(wp); | |
| 1066 | |
| 1067 numberwidth -= win_col_off2(wp); | |
| 7 | 1068 } |
|
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|
1069 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
| 7 | 1070 { |
| 5995 | 1071 added = 0; |
|
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|
1072 if (*sbr != NUL) |
| 6503 | 1073 { |
|
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1074 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
| 6503 | 1075 { |
|
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|
1076 // calculate effective window width |
|
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1077 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
|
16054
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|
1078 int prev_width = col |
|
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1079 ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
|
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1080 |
|
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1081 if (width <= 0) |
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1082 width = (colnr_T)1; |
|
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|
1083 added += ((size - prev_width) / width) * vim_strsize(sbr); |
| 6503 | 1084 if ((size - prev_width) % width) |
|
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1085 // wrapped, add another length of 'sbr' |
|
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|
1086 added += vim_strsize(sbr); |
| 6503 | 1087 } |
| 1088 else | |
|
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|
1089 added += vim_strsize(sbr); |
| 6503 | 1090 } |
| 5995 | 1091 if (wp->w_p_bri) |
| 1092 added += get_breakindent_win(wp, line); | |
| 1093 | |
| 6160 | 1094 size += added; |
| 7 | 1095 if (col != 0) |
| 1096 added = 0; | |
| 1097 } | |
| 1098 } | |
| 1099 if (headp != NULL) | |
| 1100 *headp = added + mb_added; | |
| 1101 return size; | |
| 1102 #endif | |
| 1103 } | |
| 1104 | |
| 1105 /* | |
| 1106 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
| 1107 * 'wrap' is on. This means we need to check for a double-byte character that | |
| 1108 * doesn't fit at the end of the screen line. | |
| 1109 */ | |
| 1110 static int | |
|
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|
1111 win_nolbr_chartabsize( |
|
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1112 win_T *wp, |
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1113 char_u *s, |
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1114 colnr_T col, |
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1115 int *headp) |
| 7 | 1116 { |
| 1117 int n; | |
| 1118 | |
|
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1119 if (*s == TAB && (!wp->w_p_list || wp->w_lcs_chars.tab1)) |
| 7 | 1120 { |
|
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1121 # ifdef FEAT_VARTABS |
|
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1122 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
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1123 wp->w_buffer->b_p_vts_array); |
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1124 # else |
| 7 | 1125 n = wp->w_buffer->b_p_ts; |
| 1126 return (int)(n - (col % n)); | |
|
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1127 # endif |
| 7 | 1128 } |
| 1129 n = ptr2cells(s); | |
|
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1130 // Add one cell for a double-width character in the last column of the |
|
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1131 // window, displayed with a ">". |
| 7 | 1132 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) |
| 1133 { | |
| 1134 if (headp != NULL) | |
| 1135 *headp = 1; | |
| 1136 return 3; | |
| 1137 } | |
| 1138 return n; | |
| 1139 } | |
| 1140 | |
| 1141 /* | |
| 1142 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
| 1143 * "wp". | |
| 1144 */ | |
|
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|
1145 static int |
|
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|
1146 in_win_border(win_T *wp, colnr_T vcol) |
| 7 | 1147 { |
|
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1148 int width1; // width of first line (after line number) |
|
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1149 int width2; // width of further lines |
| 7 | 1150 |
|
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|
1151 if (wp->w_width == 0) // there is no border |
| 7 | 1152 return FALSE; |
|
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|
1153 width1 = wp->w_width - win_col_off(wp); |
| 1869 | 1154 if ((int)vcol < width1 - 1) |
| 7 | 1155 return FALSE; |
| 1869 | 1156 if ((int)vcol == width1 - 1) |
| 7 | 1157 return TRUE; |
| 1158 width2 = width1 + win_col_off2(wp); | |
| 1970 | 1159 if (width2 <= 0) |
| 1160 return FALSE; | |
| 7 | 1161 return ((vcol - width1) % width2 == width2 - 1); |
| 1162 } | |
| 1163 | |
| 1164 /* | |
| 1165 * Get virtual column number of pos. | |
| 1166 * start: on the first position of this character (TAB, ctrl) | |
| 1167 * cursor: where the cursor is on this character (first char, except for TAB) | |
| 1168 * end: on the last position of this character (TAB, ctrl) | |
| 1169 * | |
| 1170 * This is used very often, keep it fast! | |
| 1171 */ | |
| 1172 void | |
|
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|
1173 getvcol( |
|
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1174 win_T *wp, |
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|
1175 pos_T *pos, |
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|
1176 colnr_T *start, |
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1177 colnr_T *cursor, |
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|
1178 colnr_T *end) |
| 7 | 1179 { |
| 1180 colnr_T vcol; | |
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1181 char_u *ptr; // points to current char |
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|
1182 char_u *posptr; // points to char at pos->col |
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|
1183 char_u *line; // start of the line |
| 7 | 1184 int incr; |
| 1185 int head; | |
|
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1186 #ifdef FEAT_VARTABS |
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|
1187 int *vts = wp->w_buffer->b_p_vts_array; |
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1188 #endif |
| 7 | 1189 int ts = wp->w_buffer->b_p_ts; |
| 1190 int c; | |
| 1191 | |
| 1192 vcol = 0; | |
| 5995 | 1193 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
|
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1194 if (pos->col == MAXCOL) |
|
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1195 posptr = NULL; // continue until the NUL |
|
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1196 else |
|
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1197 { |
|
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1198 colnr_T i; |
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1199 |
|
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1200 // In a few cases the position can be beyond the end of the line. |
|
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1201 for (i = 0; i < pos->col; ++i) |
|
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1202 if (ptr[i] == NUL) |
|
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1203 { |
|
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1204 pos->col = i; |
|
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1205 break; |
|
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1206 } |
|
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1207 posptr = ptr + pos->col; |
|
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1208 if (has_mbyte) |
|
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1209 // always start on the first byte |
|
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1210 posptr -= (*mb_head_off)(line, posptr); |
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1211 } |
| 7 | 1212 |
| 1213 /* | |
| 1214 * This function is used very often, do some speed optimizations. | |
| 5995 | 1215 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
| 1216 * use a simple loop. | |
| 7 | 1217 * Also use this when 'list' is set but tabs take their normal size. |
| 1218 */ | |
|
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|
1219 if ((!wp->w_p_list || wp->w_lcs_chars.tab1 != NUL) |
| 7 | 1220 #ifdef FEAT_LINEBREAK |
|
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patch 8.1.2281: 'showbreak' cannot be set for one window
Bram Moolenaar <Bram@vim.org>
parents:
18082
diff
changeset
|
1221 && !wp->w_p_lbr && *get_showbreak_value(wp) == NUL && !wp->w_p_bri |
| 7 | 1222 #endif |
| 1223 ) | |
| 1224 { | |
| 1225 for (;;) | |
| 1226 { | |
| 1227 head = 0; | |
| 1228 c = *ptr; | |
|
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parents:
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diff
changeset
|
1229 // make sure we don't go past the end of the line |
| 7 | 1230 if (c == NUL) |
| 1231 { | |
|
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parents:
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diff
changeset
|
1232 incr = 1; // NUL at end of line only takes one column |
| 7 | 1233 break; |
| 1234 } | |
|
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patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
18574
diff
changeset
|
1235 // A tab gets expanded, depending on the current column |
| 7 | 1236 if (c == TAB) |
|
14175
2ad722003b36
patch 8.1.0105: all tab stops are the same
Christian Brabandt <cb@256bit.org>
parents:
14061
diff
changeset
|
1237 #ifdef FEAT_VARTABS |
|
2ad722003b36
patch 8.1.0105: all tab stops are the same
Christian Brabandt <cb@256bit.org>
parents:
14061
diff
changeset
|
1238 incr = tabstop_padding(vcol, ts, vts); |
|
2ad722003b36
patch 8.1.0105: all tab stops are the same
Christian Brabandt <cb@256bit.org>
parents:
14061
diff
changeset
|
1239 #else |
| 7 | 1240 incr = ts - (vcol % ts); |
|
14175
2ad722003b36
patch 8.1.0105: all tab stops are the same
Christian Brabandt <cb@256bit.org>
parents:
14061
diff
changeset
|
1241 #endif |
| 7 | 1242 else |
| 1243 { | |
| 1244 if (has_mbyte) | |
| 1245 { | |
|
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patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1246 // For utf-8, if the byte is >= 0x80, need to look at |
|
c469e1930456
patch 8.1.2368: using old C style comments
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parents:
18574
diff
changeset
|
1247 // further bytes to find the cell width. |
| 7 | 1248 if (enc_utf8 && c >= 0x80) |
| 1249 incr = utf_ptr2cells(ptr); | |
| 1250 else | |
|
7697
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Christian Brabandt <cb@256bit.org>
parents:
7447
diff
changeset
|
1251 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1252 |
|
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parents:
18574
diff
changeset
|
1253 // If a double-cell char doesn't fit at the end of a line |
|
c469e1930456
patch 8.1.2368: using old C style comments
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1254 // it wraps to the next line, it's like this char is three |
|
c469e1930456
patch 8.1.2368: using old C style comments
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parents:
18574
diff
changeset
|
1255 // cells wide. |
| 1546 | 1256 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
| 1257 && in_win_border(wp, vcol)) | |
| 7 | 1258 { |
| 1259 ++incr; | |
| 1260 head = 1; | |
| 1261 } | |
| 1262 } | |
| 1263 else | |
|
7697
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Christian Brabandt <cb@256bit.org>
parents:
7447
diff
changeset
|
1264 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1265 } |
| 1266 | |
|
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parents:
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diff
changeset
|
1267 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1268 break; |
| 1269 | |
| 1270 vcol += incr; | |
|
11127
506f5d8b7d8b
patch 8.0.0451: some macros are in lower case
Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
1271 MB_PTR_ADV(ptr); |
| 7 | 1272 } |
| 1273 } | |
| 1274 else | |
| 1275 { | |
| 1276 for (;;) | |
| 1277 { | |
|
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parents:
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diff
changeset
|
1278 // A tab gets expanded, depending on the current column |
| 7 | 1279 head = 0; |
| 5995 | 1280 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
|
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Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1281 // make sure we don't go past the end of the line |
| 7 | 1282 if (*ptr == NUL) |
| 1283 { | |
|
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changeset
|
1284 incr = 1; // NUL at end of line only takes one column |
| 7 | 1285 break; |
| 1286 } | |
| 1287 | |
|
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diff
changeset
|
1288 if (posptr != NULL && ptr >= posptr) // character at pos->col |
| 7 | 1289 break; |
| 1290 | |
| 1291 vcol += incr; | |
|
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Christian Brabandt <cb@256bit.org>
parents:
11121
diff
changeset
|
1292 MB_PTR_ADV(ptr); |
| 7 | 1293 } |
| 1294 } | |
| 1295 if (start != NULL) | |
| 1296 *start = vcol + head; | |
| 1297 if (end != NULL) | |
| 1298 *end = vcol + incr - 1; | |
| 1299 if (cursor != NULL) | |
| 1300 { | |
| 1301 if (*ptr == TAB | |
| 1302 && (State & NORMAL) | |
| 1303 && !wp->w_p_list | |
| 1304 && !virtual_active() | |
|
11121
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diff
changeset
|
1305 && !(VIsual_active |
|
778c10516955
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1306 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
| 7 | 1307 ) |
|
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diff
changeset
|
1308 *cursor = vcol + incr - 1; // cursor at end |
| 7 | 1309 else |
|
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parents:
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diff
changeset
|
1310 *cursor = vcol + head; // cursor at start |
| 7 | 1311 } |
| 1312 } | |
| 1313 | |
| 1314 /* | |
| 1315 * Get virtual cursor column in the current window, pretending 'list' is off. | |
| 1316 */ | |
| 1317 colnr_T | |
|
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diff
changeset
|
1318 getvcol_nolist(pos_T *posp) |
| 7 | 1319 { |
| 1320 int list_save = curwin->w_p_list; | |
| 1321 colnr_T vcol; | |
| 1322 | |
| 1323 curwin->w_p_list = FALSE; | |
|
13786
0fa21ba32e21
patch 8.0.1765: CTRL-G j in Insert mode is incorrect when 'virtualedit' set
Christian Brabandt <cb@256bit.org>
parents:
13553
diff
changeset
|
1324 if (posp->coladd) |
|
0fa21ba32e21
patch 8.0.1765: CTRL-G j in Insert mode is incorrect when 'virtualedit' set
Christian Brabandt <cb@256bit.org>
parents:
13553
diff
changeset
|
1325 getvvcol(curwin, posp, NULL, &vcol, NULL); |
|
0fa21ba32e21
patch 8.0.1765: CTRL-G j in Insert mode is incorrect when 'virtualedit' set
Christian Brabandt <cb@256bit.org>
parents:
13553
diff
changeset
|
1326 else |
|
0fa21ba32e21
patch 8.0.1765: CTRL-G j in Insert mode is incorrect when 'virtualedit' set
Christian Brabandt <cb@256bit.org>
parents:
13553
diff
changeset
|
1327 getvcol(curwin, posp, NULL, &vcol, NULL); |
| 7 | 1328 curwin->w_p_list = list_save; |
| 1329 return vcol; | |
| 1330 } | |
| 1331 | |
| 1332 /* | |
| 1333 * Get virtual column in virtual mode. | |
| 1334 */ | |
| 1335 void | |
|
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diff
changeset
|
1336 getvvcol( |
|
83861277e6a3
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1337 win_T *wp, |
|
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
1338 pos_T *pos, |
|
83861277e6a3
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diff
changeset
|
1339 colnr_T *start, |
|
83861277e6a3
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parents:
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diff
changeset
|
1340 colnr_T *cursor, |
|
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
1341 colnr_T *end) |
| 7 | 1342 { |
| 1343 colnr_T col; | |
| 1344 colnr_T coladd; | |
| 1345 colnr_T endadd; | |
| 1346 char_u *ptr; | |
| 1347 | |
| 1348 if (virtual_active()) | |
| 1349 { | |
|
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diff
changeset
|
1350 // For virtual mode, only want one value |
| 7 | 1351 getvcol(wp, pos, &col, NULL, NULL); |
| 1352 | |
| 1353 coladd = pos->coladd; | |
| 1354 endadd = 0; | |
|
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parents:
18574
diff
changeset
|
1355 // Cannot put the cursor on part of a wide character. |
| 7 | 1356 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
| 1869 | 1357 if (pos->col < (colnr_T)STRLEN(ptr)) |
| 7 | 1358 { |
| 1359 int c = (*mb_ptr2char)(ptr + pos->col); | |
| 1360 | |
| 1361 if (c != TAB && vim_isprintc(c)) | |
| 1362 { | |
| 1869 | 1363 endadd = (colnr_T)(char2cells(c) - 1); |
|
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parents:
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diff
changeset
|
1364 if (coladd > endadd) // past end of line |
| 557 | 1365 endadd = 0; |
| 7 | 1366 else |
| 1367 coladd = 0; | |
| 1368 } | |
| 1369 } | |
| 1370 col += coladd; | |
| 1371 if (start != NULL) | |
| 1372 *start = col; | |
| 1373 if (cursor != NULL) | |
| 1374 *cursor = col; | |
| 1375 if (end != NULL) | |
| 1376 *end = col + endadd; | |
| 1377 } | |
| 1378 else | |
| 1379 getvcol(wp, pos, start, cursor, end); | |
| 1380 } | |
| 1381 | |
| 1382 /* | |
| 1383 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
| 1384 * Used for Visual block mode. | |
| 1385 */ | |
| 1386 void | |
|
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diff
changeset
|
1387 getvcols( |
|
83861277e6a3
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Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
1388 win_T *wp, |
|
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
1389 pos_T *pos1, |
|
83861277e6a3
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Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1390 pos_T *pos2, |
|
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
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diff
changeset
|
1391 colnr_T *left, |
|
83861277e6a3
commit https://github.com/vim/vim/commit/7454a06e2642d2b37afad1c5e71cec68081ca4ff
Christian Brabandt <cb@256bit.org>
parents:
7799
diff
changeset
|
1392 colnr_T *right) |
| 7 | 1393 { |
| 1394 colnr_T from1, from2, to1, to2; | |
| 1395 | |
|
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Christian Brabandt <cb@256bit.org>
parents:
10835
diff
changeset
|
1396 if (LT_POSP(pos1, pos2)) |
| 7 | 1397 { |
| 1398 getvvcol(wp, pos1, &from1, NULL, &to1); | |
| 1399 getvvcol(wp, pos2, &from2, NULL, &to2); | |
| 1400 } | |
| 1401 else | |
| 1402 { | |
| 1403 getvvcol(wp, pos2, &from1, NULL, &to1); | |
| 1404 getvvcol(wp, pos1, &from2, NULL, &to2); | |
| 1405 } | |
| 1406 if (from2 < from1) | |
| 1407 *left = from2; | |
| 1408 else | |
| 1409 *left = from1; | |
| 1410 if (to2 > to1) | |
| 1411 { | |
| 1412 if (*p_sel == 'e' && from2 - 1 >= to1) | |
| 1413 *right = from2 - 1; | |
| 1414 else | |
| 1415 *right = to2; | |
| 1416 } | |
| 1417 else | |
| 1418 *right = to1; | |
| 1419 } | |
| 1420 | |
| 1421 /* | |
|
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patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1422 * Skip over ' ' and '\t'. |
| 7 | 1423 */ |
| 1424 char_u * | |
|
7817
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parents:
7799
diff
changeset
|
1425 skipwhite(char_u *q) |
| 7 | 1426 { |
| 1687 | 1427 char_u *p = q; |
| 1428 | |
|
26572
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Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1429 while (VIM_ISWHITE(*p)) |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1430 ++p; |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
parents:
26327
diff
changeset
|
1431 return p; |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
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changeset
|
1432 } |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1433 |
|
27018
268f6a3511df
patch 8.2.4038: various code not used when features are disabled
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1434 #if defined(FEAT_EVAL) || defined(PROTO) |
|
26572
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Bram Moolenaar <Bram@vim.org>
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changeset
|
1435 /* |
|
9f7568104726
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diff
changeset
|
1436 * skip over ' ', '\t' and '\n'. |
|
9f7568104726
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Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1437 */ |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1438 char_u * |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
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diff
changeset
|
1439 skipwhite_and_nl(char_u *q) |
|
9f7568104726
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Bram Moolenaar <Bram@vim.org>
parents:
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changeset
|
1440 { |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1441 char_u *p = q; |
|
9f7568104726
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Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1442 |
|
9f7568104726
patch 8.2.3815: Vim9: cannot have a multi-line dict inside a block
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1443 while (VIM_ISWHITE(*p) || *p == NL) |
| 7 | 1444 ++p; |
| 1445 return p; | |
| 1446 } | |
|
27018
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Bram Moolenaar <Bram@vim.org>
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changeset
|
1447 #endif |
| 7 | 1448 |
| 1449 /* | |
|
12323
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
Christian Brabandt <cb@256bit.org>
parents:
11337
diff
changeset
|
1450 * getwhitecols: return the number of whitespace |
|
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
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parents:
11337
diff
changeset
|
1451 * columns (bytes) at the start of a given line |
|
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
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parents:
11337
diff
changeset
|
1452 */ |
|
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
Christian Brabandt <cb@256bit.org>
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11337
diff
changeset
|
1453 int |
|
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
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diff
changeset
|
1454 getwhitecols_curline() |
|
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1455 { |
|
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
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11337
diff
changeset
|
1456 return getwhitecols(ml_get_curline()); |
|
4dba3e4f3b01
patch 8.0.1041: bogus characters when indenting during visual-block append
Christian Brabandt <cb@256bit.org>
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|
1457 } |
|
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1458 |
|
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|
1459 int |
|
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|
1460 getwhitecols(char_u *p) |
|
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1461 { |
|
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|
1462 return skipwhite(p) - p; |
|
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|
1463 } |
|
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|
1464 |
|
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|
1465 /* |
| 293 | 1466 * skip over digits |
| 7 | 1467 */ |
| 1468 char_u * | |
|
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|
1469 skipdigits(char_u *q) |
| 7 | 1470 { |
| 1687 | 1471 char_u *p = q; |
| 1472 | |
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1473 while (VIM_ISDIGIT(*p)) // skip to next non-digit |
| 7 | 1474 ++p; |
| 1475 return p; | |
| 1476 } | |
| 1477 | |
| 741 | 1478 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
| 301 | 1479 /* |
|
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1480 * skip over binary digits |
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1481 */ |
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|
1482 char_u * |
|
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1483 skipbin(char_u *q) |
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1484 { |
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|
1485 char_u *p = q; |
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1486 |
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1487 while (vim_isbdigit(*p)) // skip to next non-digit |
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1488 ++p; |
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1489 return p; |
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1490 } |
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|
1491 |
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1492 /* |
| 301 | 1493 * skip over digits and hex characters |
| 1494 */ | |
| 1495 char_u * | |
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1496 skiphex(char_u *q) |
| 301 | 1497 { |
| 1687 | 1498 char_u *p = q; |
| 1499 | |
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1500 while (vim_isxdigit(*p)) // skip to next non-digit |
| 301 | 1501 ++p; |
| 1502 return p; | |
| 1503 } | |
| 1504 #endif | |
| 1505 | |
| 293 | 1506 /* |
|
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1507 * skip to bin digit (or NUL after the string) |
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1508 */ |
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1509 char_u * |
|
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1510 skiptobin(char_u *q) |
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1511 { |
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|
1512 char_u *p = q; |
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1513 |
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1514 while (*p != NUL && !vim_isbdigit(*p)) // skip to next digit |
|
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1515 ++p; |
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1516 return p; |
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1517 } |
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1518 |
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1519 /* |
| 293 | 1520 * skip to digit (or NUL after the string) |
| 1521 */ | |
| 1522 char_u * | |
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1523 skiptodigit(char_u *q) |
| 293 | 1524 { |
| 1687 | 1525 char_u *p = q; |
| 1526 | |
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1527 while (*p != NUL && !VIM_ISDIGIT(*p)) // skip to next digit |
| 293 | 1528 ++p; |
| 1529 return p; | |
| 1530 } | |
| 1531 | |
| 1532 /* | |
| 1533 * skip to hex character (or NUL after the string) | |
| 1534 */ | |
| 1535 char_u * | |
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1536 skiptohex(char_u *q) |
| 293 | 1537 { |
| 1687 | 1538 char_u *p = q; |
| 1539 | |
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1540 while (*p != NUL && !vim_isxdigit(*p)) // skip to next digit |
| 293 | 1541 ++p; |
| 1542 return p; | |
| 1543 } | |
| 1544 | |
| 7 | 1545 /* |
| 1546 * Variant of isdigit() that can handle characters > 0x100. | |
| 1547 * We don't use isdigit() here, because on some systems it also considers | |
| 1548 * superscript 1 to be a digit. | |
| 1549 * Use the VIM_ISDIGIT() macro for simple arguments. | |
| 1550 */ | |
| 1551 int | |
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1552 vim_isdigit(int c) |
| 7 | 1553 { |
| 1554 return (c >= '0' && c <= '9'); | |
| 1555 } | |
| 1556 | |
| 1557 /* | |
| 1558 * Variant of isxdigit() that can handle characters > 0x100. | |
| 1559 * We don't use isxdigit() here, because on some systems it also considers | |
| 1560 * superscript 1 to be a digit. | |
| 1561 */ | |
| 1562 int | |
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1563 vim_isxdigit(int c) |
| 7 | 1564 { |
| 1565 return (c >= '0' && c <= '9') | |
| 1566 || (c >= 'a' && c <= 'f') | |
| 1567 || (c >= 'A' && c <= 'F'); | |
| 1568 } | |
| 1569 | |
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1570 /* |
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1571 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
|
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1572 * characters > 0x100. |
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1573 */ |
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1574 int |
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1575 vim_isbdigit(int c) |
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1576 { |
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1577 return (c == '0' || c == '1'); |
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1578 } |
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1579 |
|
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1580 static int |
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1581 vim_isodigit(int c) |
|
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1582 { |
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1583 return (c >= '0' && c <= '7'); |
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1584 } |
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1585 |
| 492 | 1586 /* |
| 1587 * Vim's own character class functions. These exist because many library | |
| 1588 * islower()/toupper() etc. do not work properly: they crash when used with | |
| 1589 * invalid values or can't handle latin1 when the locale is C. | |
| 1590 * Speed is most important here. | |
| 1591 */ | |
| 1592 #define LATIN1LOWER 'l' | |
| 1593 #define LATIN1UPPER 'U' | |
| 1594 | |
| 497 | 1595 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
| 3533 | 1596 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
| 1597 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1598 |
| 1599 int | |
|
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1600 vim_islower(int c) |
| 492 | 1601 { |
| 1602 if (c <= '@') | |
| 1603 return FALSE; | |
| 1604 if (c >= 0x80) | |
| 1605 { | |
| 1606 if (enc_utf8) | |
| 1607 return utf_islower(c); | |
| 1608 if (c >= 0x100) | |
| 1609 { | |
| 1610 #ifdef HAVE_ISWLOWER | |
| 1611 if (has_mbyte) | |
| 1612 return iswlower(c); | |
| 1613 #endif | |
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1614 // islower() can't handle these chars and may crash |
| 492 | 1615 return FALSE; |
| 1616 } | |
| 1617 if (enc_latin1like) | |
| 1618 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
| 1619 } | |
| 1620 return islower(c); | |
| 1621 } | |
| 1622 | |
| 1623 int | |
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1624 vim_isupper(int c) |
| 492 | 1625 { |
| 1626 if (c <= '@') | |
| 1627 return FALSE; | |
| 1628 if (c >= 0x80) | |
| 1629 { | |
| 1630 if (enc_utf8) | |
| 1631 return utf_isupper(c); | |
| 1632 if (c >= 0x100) | |
| 1633 { | |
| 1634 #ifdef HAVE_ISWUPPER | |
| 1635 if (has_mbyte) | |
| 1636 return iswupper(c); | |
| 1637 #endif | |
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1638 // islower() can't handle these chars and may crash |
| 492 | 1639 return FALSE; |
| 1640 } | |
| 1641 if (enc_latin1like) | |
| 1642 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
| 1643 } | |
| 1644 return isupper(c); | |
| 1645 } | |
| 1646 | |
| 1647 int | |
|
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diff
changeset
|
1648 vim_toupper(int c) |
| 492 | 1649 { |
| 1650 if (c <= '@') | |
| 1651 return c; | |
|
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diff
changeset
|
1652 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1653 { |
| 1654 if (enc_utf8) | |
| 1655 return utf_toupper(c); | |
| 1656 if (c >= 0x100) | |
| 1657 { | |
| 1658 #ifdef HAVE_TOWUPPER | |
| 1659 if (has_mbyte) | |
| 1660 return towupper(c); | |
| 1661 #endif | |
|
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|
1662 // toupper() can't handle these chars and may crash |
| 492 | 1663 return c; |
| 1664 } | |
| 1665 if (enc_latin1like) | |
| 1666 return latin1upper[c]; | |
| 1667 } | |
|
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changeset
|
1668 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
|
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changeset
|
1669 return TOUPPER_ASC(c); |
| 492 | 1670 return TOUPPER_LOC(c); |
| 1671 } | |
| 1672 | |
| 1673 int | |
|
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diff
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|
1674 vim_tolower(int c) |
| 492 | 1675 { |
| 1676 if (c <= '@') | |
| 1677 return c; | |
|
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|
1678 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1679 { |
| 1680 if (enc_utf8) | |
| 1681 return utf_tolower(c); | |
| 1682 if (c >= 0x100) | |
| 1683 { | |
| 1684 #ifdef HAVE_TOWLOWER | |
| 1685 if (has_mbyte) | |
| 1686 return towlower(c); | |
| 1687 #endif | |
|
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|
1688 // tolower() can't handle these chars and may crash |
| 492 | 1689 return c; |
| 1690 } | |
| 1691 if (enc_latin1like) | |
| 1692 return latin1lower[c]; | |
| 1693 } | |
|
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|
1694 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
|
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|
1695 return TOLOWER_ASC(c); |
| 492 | 1696 return TOLOWER_LOC(c); |
| 1697 } | |
| 1698 | |
| 7 | 1699 /* |
| 1700 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
| 1701 */ | |
| 1702 char_u * | |
|
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diff
changeset
|
1703 skiptowhite(char_u *p) |
| 7 | 1704 { |
| 1705 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1706 ++p; | |
| 1707 return p; | |
| 1708 } | |
| 1709 | |
| 1710 /* | |
| 1711 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
| 1712 */ | |
| 1713 char_u * | |
|
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diff
changeset
|
1714 skiptowhite_esc(char_u *p) |
| 7 | 1715 { |
| 1716 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1717 { | |
| 1718 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
| 1719 ++p; | |
| 1720 ++p; | |
| 1721 } | |
| 1722 return p; | |
| 1723 } | |
| 1724 | |
| 1725 /* | |
|
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|
1726 * Get a number from a string and skip over it. |
| 7 | 1727 * Note: the argument is a pointer to a char_u pointer! |
| 1728 */ | |
| 1729 long | |
|
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changeset
|
1730 getdigits(char_u **pp) |
| 7 | 1731 { |
| 1732 char_u *p; | |
| 1733 long retval; | |
| 1734 | |
| 1735 p = *pp; | |
| 1736 retval = atol((char *)p); | |
|
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|
1737 if (*p == '-') // skip negative sign |
| 7 | 1738 ++p; |
|
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|
1739 p = skipdigits(p); // skip to next non-digit |
| 7 | 1740 *pp = p; |
| 1741 return retval; | |
| 1742 } | |
| 1743 | |
| 1744 /* | |
|
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|
1745 * Like getdigits() but allow for embedded single quotes. |
|
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|
1746 */ |
|
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|
1747 long |
|
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|
1748 getdigits_quoted(char_u **pp) |
|
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|
1749 { |
|
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|
1750 char_u *p = *pp; |
|
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|
1751 long retval = 0; |
|
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|
1752 |
|
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|
1753 if (*p == '-') |
|
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|
1754 ++p; |
|
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|
1755 while (VIM_ISDIGIT(*p)) |
|
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|
1756 { |
|
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|
1757 if (retval >= LONG_MAX / 10 - 10) |
|
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|
1758 retval = LONG_MAX; |
|
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1759 else |
|
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|
1760 retval = retval * 10 - '0' + *p; |
|
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|
1761 ++p; |
|
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|
1762 if (in_vim9script() && *p == '\'' && VIM_ISDIGIT(p[1])) |
|
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|
1763 ++p; |
|
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1764 } |
|
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|
1765 if (**pp == '-') |
|
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|
1766 { |
|
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|
1767 if (retval == LONG_MAX) |
|
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|
1768 retval = LONG_MIN; |
|
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|
1769 else |
|
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|
1770 retval = -retval; |
|
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1771 } |
|
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|
1772 *pp = p; |
|
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|
1773 return retval; |
|
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|
1774 } |
|
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|
1775 |
|
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|
1776 /* |
| 7 | 1777 * Return TRUE if "lbuf" is empty or only contains blanks. |
| 1778 */ | |
| 1779 int | |
|
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changeset
|
1780 vim_isblankline(char_u *lbuf) |
| 7 | 1781 { |
| 1782 char_u *p; | |
| 1783 | |
| 1784 p = skipwhite(lbuf); | |
| 1785 return (*p == NUL || *p == '\r' || *p == '\n'); | |
| 1786 } | |
| 1787 | |
| 1788 /* | |
| 1789 * Convert a string into a long and/or unsigned long, taking care of | |
|
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|
1790 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
|
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|
1791 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
| 7 | 1792 * 0 decimal |
| 1793 * '0' octal | |
|
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|
1794 * 'O' octal |
|
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|
1795 * 'o' octal |
|
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1796 * 'B' bin |
|
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|
1797 * 'b' bin |
| 7 | 1798 * 'X' hex |
| 1799 * 'x' hex | |
| 1800 * If "len" is not NULL, the length of the number in characters is returned. | |
| 1801 * If "nptr" is not NULL, the signed result is returned in it. | |
| 1802 * If "unptr" is not NULL, the unsigned result is returned in it. | |
|
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1803 * If "what" contains STR2NR_BIN recognize binary numbers |
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|
1804 * If "what" contains STR2NR_OCT recognize octal numbers |
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1805 * If "what" contains STR2NR_HEX recognize hex numbers |
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|
1806 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
|
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|
1807 * If "what" contains STR2NR_QUOTE ignore embedded single quotes |
|
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|
1808 * If maxlen > 0, check at a maximum maxlen chars. |
|
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1809 * If strict is TRUE, check the number strictly. return *len = 0 if fail. |
| 7 | 1810 */ |
| 1811 void | |
|
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|
1812 vim_str2nr( |
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|
1813 char_u *start, |
|
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|
1814 int *prep, // return: type of number 0 = decimal, 'x' |
|
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1815 // or 'X' is hex, '0', 'o' or 'O' is octal, |
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|
1816 // 'b' or 'B' is bin |
|
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1817 int *len, // return: detected length of number |
|
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|
1818 int what, // what numbers to recognize |
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|
1819 varnumber_T *nptr, // return: signed result |
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1820 uvarnumber_T *unptr, // return: unsigned result |
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1821 int maxlen, // max length of string to check |
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|
1822 int strict) // check strictly |
| 7 | 1823 { |
| 1824 char_u *ptr = start; | |
|
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|
1825 int pre = 0; // default is decimal |
| 7 | 1826 int negative = FALSE; |
|
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|
1827 uvarnumber_T un = 0; |
| 39 | 1828 int n; |
| 7 | 1829 |
|
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1830 if (len != NULL) |
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1831 *len = 0; |
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|
1832 |
| 7 | 1833 if (ptr[0] == '-') |
| 1834 { | |
| 1835 negative = TRUE; | |
| 1836 ++ptr; | |
| 1837 } | |
| 1838 | |
|
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|
1839 // Recognize hex, octal, and bin. |
| 6927 | 1840 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
| 1841 && (maxlen == 0 || maxlen > 1)) | |
| 7 | 1842 { |
|
7447
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diff
changeset
|
1843 pre = ptr[1]; |
|
ad432f8f68fb
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diff
changeset
|
1844 if ((what & STR2NR_HEX) |
|
ad432f8f68fb
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1845 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
|
ad432f8f68fb
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1846 && (maxlen == 0 || maxlen > 2)) |
|
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patch 8.1.2368: using old C style comments
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diff
changeset
|
1847 // hexadecimal |
|
7447
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1848 ptr += 2; |
|
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diff
changeset
|
1849 else if ((what & STR2NR_BIN) |
|
ad432f8f68fb
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|
1850 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
|
ad432f8f68fb
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|
1851 && (maxlen == 0 || maxlen > 2)) |
|
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diff
changeset
|
1852 // binary |
|
7447
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Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1853 ptr += 2; |
|
20665
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patch 8.2.0886: cannot use octal numbers in scriptversion 4
Bram Moolenaar <Bram@vim.org>
parents:
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diff
changeset
|
1854 else if ((what & STR2NR_OOCT) |
|
23533
ee43d943c3bb
patch 8.2.2309: 0o777 not recognized as octal
Bram Moolenaar <Bram@vim.org>
parents:
20782
diff
changeset
|
1855 && (pre == 'O' || pre == 'o') && vim_isodigit(ptr[2]) |
|
20665
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diff
changeset
|
1856 && (maxlen == 0 || maxlen > 2)) |
|
6ff992bf4c82
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diff
changeset
|
1857 // octal with prefix "0o" |
|
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|
1858 ptr += 2; |
| 7 | 1859 else |
| 1860 { | |
|
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|
1861 // decimal or octal, default is decimal |
|
7447
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changeset
|
1862 pre = 0; |
|
ad432f8f68fb
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Christian Brabandt <cb@256bit.org>
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|
1863 if (what & STR2NR_OCT) |
| 39 | 1864 { |
|
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changeset
|
1865 // Don't interpret "0", "08" or "0129" as octal. |
|
12704
ee5f3f5d3c55
patch 8.0.1230: CTRL-A in Visual mode uses character after selection
Christian Brabandt <cb@256bit.org>
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diff
changeset
|
1866 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
| 39 | 1867 { |
| 1868 if (ptr[n] > '7') | |
| 1869 { | |
|
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|
1870 pre = 0; // can't be octal |
| 39 | 1871 break; |
| 1872 } | |
|
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|
1873 pre = '0'; // assume octal |
| 39 | 1874 } |
| 1875 } | |
| 7 | 1876 } |
| 1877 } | |
| 1878 | |
|
16706
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patch 8.1.1355: obvious mistakes are accepted as valid expressions
Bram Moolenaar <Bram@vim.org>
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diff
changeset
|
1879 // Do the conversion manually to avoid sscanf() quirks. |
| 6927 | 1880 n = 1; |
|
18082
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|
1881 if (pre == 'B' || pre == 'b' |
|
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changeset
|
1882 || ((what & STR2NR_BIN) && (what & STR2NR_FORCE))) |
|
7447
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diff
changeset
|
1883 { |
|
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diff
changeset
|
1884 // bin |
|
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diff
changeset
|
1885 if (pre != 0) |
|
18757
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diff
changeset
|
1886 n += 2; // skip over "0b" |
|
7447
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diff
changeset
|
1887 while ('0' <= *ptr && *ptr <= '1') |
|
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|
1888 { |
|
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changeset
|
1889 // avoid ubsan error for overflow |
|
14061
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changeset
|
1890 if (un <= UVARNUM_MAX / 2) |
|
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diff
changeset
|
1891 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
|
10658
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|
1892 else |
|
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patch 8.0.0219: ubsan reports errors for overflow
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changeset
|
1893 un = UVARNUM_MAX; |
|
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|
1894 ++ptr; |
|
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changeset
|
1895 if (n++ == maxlen) |
|
ad432f8f68fb
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changeset
|
1896 break; |
|
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|
1897 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
|
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|
1898 && '0' <= ptr[1] && ptr[1] <= '1') |
|
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|
1899 { |
|
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|
1900 ++ptr; |
|
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|
1901 if (n++ == maxlen) |
|
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changeset
|
1902 break; |
|
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diff
changeset
|
1903 } |
|
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|
1904 } |
|
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changeset
|
1905 } |
|
20665
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diff
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|
1906 else if (pre == 'O' || pre == 'o' || |
|
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|
1907 pre == '0' || ((what & STR2NR_OCT) && (what & STR2NR_FORCE))) |
| 7 | 1908 { |
|
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diff
changeset
|
1909 // octal |
|
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changeset
|
1910 if (pre != 0 && pre != '0') |
|
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changeset
|
1911 n += 2; // skip over "0o" |
| 293 | 1912 while ('0' <= *ptr && *ptr <= '7') |
| 7 | 1913 { |
|
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|
1914 // avoid ubsan error for overflow |
|
14061
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13786
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changeset
|
1915 if (un <= UVARNUM_MAX / 8) |
|
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patch 8.0.0219: ubsan reports errors for overflow
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changeset
|
1916 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
|
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diff
changeset
|
1917 else |
|
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|
1918 un = UVARNUM_MAX; |
| 293 | 1919 ++ptr; |
| 6927 | 1920 if (n++ == maxlen) |
| 1921 break; | |
|
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|
1922 if ((what & STR2NR_QUOTE) && *ptr == '\'' |
|
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|
1923 && '0' <= ptr[1] && ptr[1] <= '7') |
|
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changeset
|
1924 { |
|
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|
1925 ++ptr; |
|
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changeset
|
1926 if (n++ == maxlen) |
|
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diff
changeset
|
1927 break; |
|
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changeset
|
1928 } |
| 7 | 1929 } |
| 293 | 1930 } |
|
18082
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changeset
|
1931 else if (pre != 0 || ((what & STR2NR_HEX) && (what & STR2NR_FORCE))) |
| 293 | 1932 { |
|
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|
1933 // hex |
|
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|
1934 if (pre != 0) |
|
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|
1935 n += 2; // skip over "0x" |
| 293 | 1936 while (vim_isxdigit(*ptr)) |
| 7 | 1937 { |
|
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|
1938 // avoid ubsan error for overflow |
|
14061
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|
1939 if (un <= UVARNUM_MAX / 16) |
|
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changeset
|
1940 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
|
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changeset
|
1941 else |
|
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changeset
|
1942 un = UVARNUM_MAX; |
| 293 | 1943 ++ptr; |
| 6927 | 1944 if (n++ == maxlen) |
| 1945 break; | |
|
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changeset
|
1946 if ((what & STR2NR_QUOTE) && *ptr == '\'' && vim_isxdigit(ptr[1])) |
|
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|
1947 { |
|
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|
1948 ++ptr; |
|
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|
1949 if (n++ == maxlen) |
|
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changeset
|
1950 break; |
|
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changeset
|
1951 } |
| 7 | 1952 } |
| 1953 } | |
| 1954 else | |
| 1955 { | |
|
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|
1956 // decimal |
| 7 | 1957 while (VIM_ISDIGIT(*ptr)) |
| 1958 { | |
|
14061
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changeset
|
1959 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
|
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13786
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changeset
|
1960 |
|
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changeset
|
1961 // avoid ubsan error for overflow |
|
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diff
changeset
|
1962 if (un < UVARNUM_MAX / 10 |
|
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diff
changeset
|
1963 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
|
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diff
changeset
|
1964 un = 10 * un + digit; |
|
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changeset
|
1965 else |
|
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changeset
|
1966 un = UVARNUM_MAX; |
| 7 | 1967 ++ptr; |
| 6927 | 1968 if (n++ == maxlen) |
| 1969 break; | |
|
18082
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changeset
|
1970 if ((what & STR2NR_QUOTE) && *ptr == '\'' && VIM_ISDIGIT(ptr[1])) |
|
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changeset
|
1971 { |
|
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1972 ++ptr; |
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1973 if (n++ == maxlen) |
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1974 break; |
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1975 } |
| 7 | 1976 } |
| 1977 } | |
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1978 |
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patch 8.2.0156: various typos in source files and tests
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1979 // Check for an alphanumeric character immediately following, that is |
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patch 8.1.1355: obvious mistakes are accepted as valid expressions
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1980 // most likely a typo. |
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1981 if (strict && n - 1 != maxlen && ASCII_ISALNUM(*ptr)) |
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1982 return; |
| 7 | 1983 |
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1984 if (prep != NULL) |
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1985 *prep = pre; |
| 7 | 1986 if (len != NULL) |
| 1987 *len = (int)(ptr - start); | |
| 1988 if (nptr != NULL) | |
| 16 | 1989 { |
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1990 if (negative) // account for leading '-' for decimal numbers |
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1991 { |
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1992 // avoid ubsan error for overflow |
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1993 if (un > VARNUM_MAX) |
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1994 *nptr = VARNUM_MIN; |
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1995 else |
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1996 *nptr = -(varnumber_T)un; |
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1997 } |
| 16 | 1998 else |
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1999 { |
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2000 if (un > VARNUM_MAX) |
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2001 un = VARNUM_MAX; |
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2002 *nptr = (varnumber_T)un; |
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2003 } |
| 16 | 2004 } |
| 7 | 2005 if (unptr != NULL) |
| 2006 *unptr = un; | |
| 2007 } | |
| 2008 | |
| 2009 /* | |
| 2010 * Return the value of a single hex character. | |
| 2011 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
| 2012 */ | |
| 2013 int | |
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2014 hex2nr(int c) |
| 7 | 2015 { |
| 2016 if (c >= 'a' && c <= 'f') | |
| 2017 return c - 'a' + 10; | |
| 2018 if (c >= 'A' && c <= 'F') | |
| 2019 return c - 'A' + 10; | |
| 2020 return c - '0'; | |
| 2021 } | |
| 2022 | |
| 2023 /* | |
| 2024 * Convert two hex characters to a byte. | |
| 2025 * Return -1 if one of the characters is not hex. | |
| 2026 */ | |
| 2027 int | |
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2028 hexhex2nr(char_u *p) |
| 7 | 2029 { |
| 2030 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
| 2031 return -1; | |
| 2032 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
| 2033 } | |
| 2034 | |
| 2035 /* | |
| 2036 * Return TRUE if "str" starts with a backslash that should be removed. | |
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2037 * For MS-DOS, MSWIN and OS/2 this is only done when the character after the |
| 7 | 2038 * backslash is not a normal file name character. |
| 2039 * '$' is a valid file name character, we don't remove the backslash before | |
| 2040 * it. This means it is not possible to use an environment variable after a | |
| 2041 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
| 2042 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
| 2043 * removed. Assume a file name doesn't start with a space. | |
| 2044 * For multi-byte names, never remove a backslash before a non-ascii | |
| 2045 * character, assume that all multi-byte characters are valid file name | |
| 2046 * characters. | |
| 2047 */ | |
| 2048 int | |
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2049 rem_backslash(char_u *str) |
| 7 | 2050 { |
| 2051 #ifdef BACKSLASH_IN_FILENAME | |
| 2052 return (str[0] == '\\' | |
| 2053 && str[1] < 0x80 | |
| 2054 && (str[1] == ' ' | |
| 2055 || (str[1] != NUL | |
| 2056 && str[1] != '*' | |
| 2057 && str[1] != '?' | |
| 2058 && !vim_isfilec(str[1])))); | |
| 2059 #else | |
| 2060 return (str[0] == '\\' && str[1] != NUL); | |
| 2061 #endif | |
| 2062 } | |
| 2063 | |
| 2064 /* | |
| 2065 * Halve the number of backslashes in a file name argument. | |
| 2066 * For MS-DOS we only do this if the character after the backslash | |
| 2067 * is not a normal file character. | |
| 2068 */ | |
| 2069 void | |
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2070 backslash_halve(char_u *p) |
| 7 | 2071 { |
| 2072 for ( ; *p; ++p) | |
| 2073 if (rem_backslash(p)) | |
| 1621 | 2074 STRMOVE(p, p + 1); |
| 7 | 2075 } |
| 2076 | |
| 2077 /* | |
| 2078 * backslash_halve() plus save the result in allocated memory. | |
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2079 * However, returns "p" when out of memory. |
| 7 | 2080 */ |
| 2081 char_u * | |
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2082 backslash_halve_save(char_u *p) |
| 7 | 2083 { |
| 2084 char_u *res; | |
| 2085 | |
| 2086 res = vim_strsave(p); | |
| 2087 if (res == NULL) | |
| 2088 return p; | |
| 2089 backslash_halve(res); | |
| 2090 return res; | |
| 2091 } |