Mercurial > vim
annotate src/charset.c @ 16577:3afc140c9ef6
Added tag v8.1.1291 for changeset bcc3431751033bba4858ac26049b07e957a99da6
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Tue, 07 May 2019 22:15:06 +0200 |
| parents | 78faa25f9698 |
| children | 77bcb5055fec |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
| 7 | 2 * |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 #include "vim.h" | |
| 11 | |
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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 | |
| 21 /* b_chartab[] is an array of 32 bytes, each bit representing one of the | |
| 22 * characters 0-255. */ | |
| 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 /* |
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39 * Fill g_chartab[]. Also fills curbuf->b_chartab[] with flags for keyword |
| 7 | 40 * characters for current buffer. |
| 41 * | |
| 42 * Depends on the option settings 'iskeyword', 'isident', 'isfname', | |
| 43 * 'isprint' and 'encoding'. | |
| 44 * | |
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45 * The index in g_chartab[] depends on 'encoding': |
| 7 | 46 * - For non-multi-byte index with the byte (same as the character). |
| 47 * - For DBCS index with the first byte. | |
| 48 * - For UTF-8 index with the character (when first byte is up to 0x80 it is | |
| 49 * the same as the character, if the first byte is 0x80 and above it depends | |
| 50 * on further bytes). | |
| 51 * | |
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52 * The contents of g_chartab[]: |
| 7 | 53 * - The lower two bits, masked by CT_CELL_MASK, give the number of display |
| 54 * cells the character occupies (1 or 2). Not valid for UTF-8 above 0x80. | |
| 55 * - CT_PRINT_CHAR bit is set when the character is printable (no need to | |
| 56 * translate the character before displaying it). Note that only DBCS | |
| 57 * characters can have 2 display cells and still be printable. | |
| 58 * - CT_FNAME_CHAR bit is set when the character can be in a file name. | |
| 59 * - CT_ID_CHAR bit is set when the character can be in an identifier. | |
| 60 * | |
| 61 * Return FAIL if 'iskeyword', 'isident', 'isfname' or 'isprint' option has an | |
| 62 * error, OK otherwise. | |
| 63 */ | |
| 64 int | |
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65 init_chartab(void) |
| 7 | 66 { |
| 67 return buf_init_chartab(curbuf, TRUE); | |
| 68 } | |
| 69 | |
| 70 int | |
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71 buf_init_chartab( |
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72 buf_T *buf, |
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73 int global) /* FALSE: only set buf->b_chartab[] */ |
| 7 | 74 { |
| 75 int c; | |
| 76 int c2; | |
| 77 char_u *p; | |
| 78 int i; | |
| 79 int tilde; | |
| 80 int do_isalpha; | |
| 81 | |
| 82 if (global) | |
| 83 { | |
| 84 /* | |
| 85 * Set the default size for printable characters: | |
| 86 * From <Space> to '~' is 1 (printable), others are 2 (not printable). | |
| 87 * This also inits all 'isident' and 'isfname' flags to FALSE. | |
| 88 * | |
| 89 * EBCDIC: all chars below ' ' are not printable, all others are | |
| 90 * printable. | |
| 91 */ | |
| 92 c = 0; | |
| 93 while (c < ' ') | |
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94 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
| 7 | 95 #ifdef EBCDIC |
| 96 while (c < 255) | |
| 97 #else | |
| 98 while (c <= '~') | |
| 99 #endif | |
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100 g_chartab[c++] = 1 + CT_PRINT_CHAR; |
| 7 | 101 while (c < 256) |
| 102 { | |
| 103 /* UTF-8: bytes 0xa0 - 0xff are printable (latin1) */ | |
| 104 if (enc_utf8 && c >= 0xa0) | |
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105 g_chartab[c++] = CT_PRINT_CHAR + 1; |
| 7 | 106 /* euc-jp characters starting with 0x8e are single width */ |
| 107 else if (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
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108 g_chartab[c++] = CT_PRINT_CHAR + 1; |
| 7 | 109 /* other double-byte chars can be printable AND double-width */ |
| 110 else if (enc_dbcs != 0 && MB_BYTE2LEN(c) == 2) | |
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111 g_chartab[c++] = CT_PRINT_CHAR + 2; |
| 7 | 112 else |
| 113 /* the rest is unprintable by default */ | |
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114 g_chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; |
| 7 | 115 } |
| 116 | |
| 117 /* Assume that every multi-byte char is a filename character. */ | |
| 118 for (c = 1; c < 256; ++c) | |
| 119 if ((enc_dbcs != 0 && MB_BYTE2LEN(c) > 1) | |
| 120 || (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
| 121 || (enc_utf8 && c >= 0xa0)) | |
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122 g_chartab[c] |= CT_FNAME_CHAR; |
| 7 | 123 } |
| 124 | |
| 125 /* | |
| 126 * Init word char flags all to FALSE | |
| 127 */ | |
| 128 vim_memset(buf->b_chartab, 0, (size_t)32); | |
| 227 | 129 if (enc_dbcs != 0) |
| 130 for (c = 0; c < 256; ++c) | |
| 131 { | |
| 132 /* double-byte characters are probably word characters */ | |
| 133 if (MB_BYTE2LEN(c) == 2) | |
| 134 SET_CHARTAB(buf, c); | |
| 135 } | |
| 7 | 136 |
| 137 #ifdef FEAT_LISP | |
| 138 /* | |
| 139 * In lisp mode the '-' character is included in keywords. | |
| 140 */ | |
| 141 if (buf->b_p_lisp) | |
| 142 SET_CHARTAB(buf, '-'); | |
| 143 #endif | |
| 144 | |
| 145 /* Walk through the 'isident', 'iskeyword', 'isfname' and 'isprint' | |
| 146 * options Each option is a list of characters, character numbers or | |
| 147 * ranges, separated by commas, e.g.: "200-210,x,#-178,-" | |
| 148 */ | |
| 149 for (i = global ? 0 : 3; i <= 3; ++i) | |
| 150 { | |
| 151 if (i == 0) | |
| 152 p = p_isi; /* first round: 'isident' */ | |
| 153 else if (i == 1) | |
| 154 p = p_isp; /* second round: 'isprint' */ | |
| 155 else if (i == 2) | |
| 156 p = p_isf; /* third round: 'isfname' */ | |
| 157 else /* i == 3 */ | |
| 158 p = buf->b_p_isk; /* fourth round: 'iskeyword' */ | |
| 159 | |
| 160 while (*p) | |
| 161 { | |
| 162 tilde = FALSE; | |
| 163 do_isalpha = FALSE; | |
| 164 if (*p == '^' && p[1] != NUL) | |
| 165 { | |
| 166 tilde = TRUE; | |
| 167 ++p; | |
| 168 } | |
| 169 if (VIM_ISDIGIT(*p)) | |
| 170 c = getdigits(&p); | |
| 171 else | |
| 1955 | 172 if (has_mbyte) |
| 173 c = mb_ptr2char_adv(&p); | |
| 174 else | |
| 7 | 175 c = *p++; |
| 176 c2 = -1; | |
| 177 if (*p == '-' && p[1] != NUL) | |
| 178 { | |
| 179 ++p; | |
| 180 if (VIM_ISDIGIT(*p)) | |
| 181 c2 = getdigits(&p); | |
| 182 else | |
| 1979 | 183 if (has_mbyte) |
| 184 c2 = mb_ptr2char_adv(&p); | |
| 185 else | |
| 7 | 186 c2 = *p++; |
| 187 } | |
| 1979 | 188 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
| 7 | 189 || !(*p == NUL || *p == ',')) |
| 190 return FAIL; | |
| 191 | |
| 192 if (c2 == -1) /* not a range */ | |
| 193 { | |
| 194 /* | |
| 195 * A single '@' (not "@-@"): | |
| 196 * Decide on letters being ID/printable/keyword chars with | |
| 197 * standard function isalpha(). This takes care of locale for | |
| 198 * single-byte characters). | |
| 199 */ | |
| 200 if (c == '@') | |
| 201 { | |
| 202 do_isalpha = TRUE; | |
| 203 c = 1; | |
| 204 c2 = 255; | |
| 205 } | |
| 206 else | |
| 207 c2 = c; | |
| 208 } | |
| 209 while (c <= c2) | |
| 210 { | |
| 1365 | 211 /* Use the MB_ functions here, because isalpha() doesn't |
| 212 * work properly when 'encoding' is "latin1" and the locale is | |
| 213 * "C". */ | |
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214 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c)) |
| 7 | 215 { |
| 216 if (i == 0) /* (re)set ID flag */ | |
| 217 { | |
| 218 if (tilde) | |
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219 g_chartab[c] &= ~CT_ID_CHAR; |
| 7 | 220 else |
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221 g_chartab[c] |= CT_ID_CHAR; |
| 7 | 222 } |
| 223 else if (i == 1) /* (re)set printable */ | |
| 224 { | |
| 225 if ((c < ' ' | |
| 226 #ifndef EBCDIC | |
| 227 || c > '~' | |
| 228 #endif | |
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229 // For double-byte we keep the cell width, so |
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230 // that we can detect it from the first byte. |
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231 ) && !(enc_dbcs && MB_BYTE2LEN(c) == 2)) |
| 7 | 232 { |
| 233 if (tilde) | |
| 234 { | |
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235 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) |
| 7 | 236 + ((dy_flags & DY_UHEX) ? 4 : 2); |
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237 g_chartab[c] &= ~CT_PRINT_CHAR; |
| 7 | 238 } |
| 239 else | |
| 240 { | |
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241 g_chartab[c] = (g_chartab[c] & ~CT_CELL_MASK) + 1; |
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242 g_chartab[c] |= CT_PRINT_CHAR; |
| 7 | 243 } |
| 244 } | |
| 245 } | |
| 246 else if (i == 2) /* (re)set fname flag */ | |
| 247 { | |
| 248 if (tilde) | |
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249 g_chartab[c] &= ~CT_FNAME_CHAR; |
| 7 | 250 else |
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251 g_chartab[c] |= CT_FNAME_CHAR; |
| 7 | 252 } |
| 253 else /* i == 3 */ /* (re)set keyword flag */ | |
| 254 { | |
| 255 if (tilde) | |
| 256 RESET_CHARTAB(buf, c); | |
| 257 else | |
| 258 SET_CHARTAB(buf, c); | |
| 259 } | |
| 260 } | |
| 261 ++c; | |
| 262 } | |
| 4096 | 263 |
| 264 c = *p; | |
| 7 | 265 p = skip_to_option_part(p); |
| 4096 | 266 if (c == ',' && *p == NUL) |
| 267 /* Trailing comma is not allowed. */ | |
| 268 return FAIL; | |
| 7 | 269 } |
| 270 } | |
| 271 chartab_initialized = TRUE; | |
| 272 return OK; | |
| 273 } | |
| 274 | |
| 275 /* | |
| 276 * Translate any special characters in buf[bufsize] in-place. | |
| 277 * The result is a string with only printable characters, but if there is not | |
| 278 * enough room, not all characters will be translated. | |
| 279 */ | |
| 280 void | |
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281 trans_characters( |
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282 char_u *buf, |
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283 int bufsize) |
| 7 | 284 { |
| 285 int len; /* length of string needing translation */ | |
| 286 int room; /* room in buffer after string */ | |
| 287 char_u *trs; /* translated character */ | |
| 288 int trs_len; /* length of trs[] */ | |
| 289 | |
| 290 len = (int)STRLEN(buf); | |
| 291 room = bufsize - len; | |
| 292 while (*buf != 0) | |
| 293 { | |
| 294 /* Assume a multi-byte character doesn't need translation. */ | |
| 474 | 295 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
| 7 | 296 len -= trs_len; |
| 297 else | |
| 298 { | |
| 299 trs = transchar_byte(*buf); | |
| 300 trs_len = (int)STRLEN(trs); | |
| 301 if (trs_len > 1) | |
| 302 { | |
| 303 room -= trs_len - 1; | |
| 304 if (room <= 0) | |
| 305 return; | |
| 306 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
| 307 } | |
| 308 mch_memmove(buf, trs, (size_t)trs_len); | |
| 309 --len; | |
| 310 } | |
| 311 buf += trs_len; | |
| 312 } | |
| 313 } | |
| 314 | |
| 1097 | 315 #if defined(FEAT_EVAL) || defined(FEAT_TITLE) || defined(FEAT_INS_EXPAND) \ |
| 316 || defined(PROTO) | |
| 7 | 317 /* |
| 318 * Translate a string into allocated memory, replacing special chars with | |
| 319 * printable chars. Returns NULL when out of memory. | |
| 320 */ | |
| 321 char_u * | |
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322 transstr(char_u *s) |
| 7 | 323 { |
| 324 char_u *res; | |
| 325 char_u *p; | |
| 326 int l, len, c; | |
| 327 char_u hexbuf[11]; | |
| 328 | |
| 329 if (has_mbyte) | |
| 330 { | |
| 331 /* Compute the length of the result, taking account of unprintable | |
| 332 * multi-byte characters. */ | |
| 333 len = 0; | |
| 334 p = s; | |
| 335 while (*p != NUL) | |
| 336 { | |
| 474 | 337 if ((l = (*mb_ptr2len)(p)) > 1) |
| 7 | 338 { |
| 339 c = (*mb_ptr2char)(p); | |
| 340 p += l; | |
| 341 if (vim_isprintc(c)) | |
| 342 len += l; | |
| 343 else | |
| 344 { | |
| 345 transchar_hex(hexbuf, c); | |
| 835 | 346 len += (int)STRLEN(hexbuf); |
| 7 | 347 } |
| 348 } | |
| 349 else | |
| 350 { | |
| 351 l = byte2cells(*p++); | |
| 352 if (l > 0) | |
| 353 len += l; | |
| 354 else | |
| 355 len += 4; /* illegal byte sequence */ | |
| 356 } | |
| 357 } | |
| 358 res = alloc((unsigned)(len + 1)); | |
| 359 } | |
| 360 else | |
| 361 res = alloc((unsigned)(vim_strsize(s) + 1)); | |
| 362 if (res != NULL) | |
| 363 { | |
| 364 *res = NUL; | |
| 365 p = s; | |
| 366 while (*p != NUL) | |
| 367 { | |
| 474 | 368 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 7 | 369 { |
| 370 c = (*mb_ptr2char)(p); | |
| 371 if (vim_isprintc(c)) | |
| 372 STRNCAT(res, p, l); /* append printable multi-byte char */ | |
| 373 else | |
| 374 transchar_hex(res + STRLEN(res), c); | |
| 375 p += l; | |
| 376 } | |
| 377 else | |
| 378 STRCAT(res, transchar_byte(*p++)); | |
| 379 } | |
| 380 } | |
| 381 return res; | |
| 382 } | |
| 383 #endif | |
| 384 | |
| 385 #if defined(FEAT_SYN_HL) || defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 386 /* | |
| 221 | 387 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
| 388 * current locale. | |
| 130 | 389 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
| 390 * Otherwise puts the result in "buf[buflen]". | |
| 7 | 391 */ |
| 392 char_u * | |
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393 str_foldcase( |
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394 char_u *str, |
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395 int orglen, |
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396 char_u *buf, |
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397 int buflen) |
| 7 | 398 { |
| 399 garray_T ga; | |
| 400 int i; | |
| 130 | 401 int len = orglen; |
| 7 | 402 |
| 403 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
| 404 #define GA_PTR(i) ((char_u *)ga.ga_data + i) | |
| 130 | 405 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
| 406 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + i) | |
| 7 | 407 |
| 130 | 408 /* Copy "str" into "buf" or allocated memory, unmodified. */ |
| 409 if (buf == NULL) | |
| 410 { | |
| 411 ga_init2(&ga, 1, 10); | |
| 412 if (ga_grow(&ga, len + 1) == FAIL) | |
| 413 return NULL; | |
| 414 mch_memmove(ga.ga_data, str, (size_t)len); | |
| 415 ga.ga_len = len; | |
| 416 } | |
| 417 else | |
| 418 { | |
| 419 if (len >= buflen) /* Ugly! */ | |
| 420 len = buflen - 1; | |
| 421 mch_memmove(buf, str, (size_t)len); | |
| 422 } | |
| 423 if (buf == NULL) | |
| 424 GA_CHAR(len) = NUL; | |
| 425 else | |
| 426 buf[len] = NUL; | |
| 7 | 427 |
| 428 /* Make each character lower case. */ | |
| 429 i = 0; | |
| 130 | 430 while (STR_CHAR(i) != NUL) |
| 7 | 431 { |
| 130 | 432 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
| 7 | 433 { |
| 434 if (enc_utf8) | |
| 435 { | |
| 1654 | 436 int c = utf_ptr2char(STR_PTR(i)); |
| 3263 | 437 int olen = utf_ptr2len(STR_PTR(i)); |
| 1654 | 438 int lc = utf_tolower(c); |
| 7 | 439 |
| 1654 | 440 /* Only replace the character when it is not an invalid |
| 441 * sequence (ASCII character or more than one byte) and | |
| 442 * utf_tolower() doesn't return the original character. */ | |
| 3263 | 443 if ((c < 0x80 || olen > 1) && c != lc) |
| 7 | 444 { |
| 3263 | 445 int nlen = utf_char2len(lc); |
| 7 | 446 |
| 447 /* If the byte length changes need to shift the following | |
| 448 * characters forward or backward. */ | |
| 3263 | 449 if (olen != nlen) |
| 7 | 450 { |
| 3263 | 451 if (nlen > olen) |
| 130 | 452 { |
| 3263 | 453 if (buf == NULL |
| 454 ? ga_grow(&ga, nlen - olen + 1) == FAIL | |
| 455 : len + nlen - olen >= buflen) | |
| 7 | 456 { |
| 457 /* out of memory, keep old char */ | |
| 458 lc = c; | |
| 3263 | 459 nlen = olen; |
| 7 | 460 } |
| 130 | 461 } |
| 3263 | 462 if (olen != nlen) |
| 7 | 463 { |
| 130 | 464 if (buf == NULL) |
| 465 { | |
| 3263 | 466 STRMOVE(GA_PTR(i) + nlen, GA_PTR(i) + olen); |
| 467 ga.ga_len += nlen - olen; | |
| 130 | 468 } |
| 469 else | |
| 470 { | |
| 3263 | 471 STRMOVE(buf + i + nlen, buf + i + olen); |
| 472 len += nlen - olen; | |
| 130 | 473 } |
| 7 | 474 } |
| 475 } | |
| 130 | 476 (void)utf_char2bytes(lc, STR_PTR(i)); |
| 7 | 477 } |
| 478 } | |
| 479 /* skip to next multi-byte char */ | |
| 474 | 480 i += (*mb_ptr2len)(STR_PTR(i)); |
| 7 | 481 } |
| 482 else | |
| 483 { | |
| 130 | 484 if (buf == NULL) |
| 485 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
| 486 else | |
| 487 buf[i] = TOLOWER_LOC(buf[i]); | |
| 7 | 488 ++i; |
| 489 } | |
| 490 } | |
| 491 | |
| 130 | 492 if (buf == NULL) |
| 493 return (char_u *)ga.ga_data; | |
| 494 return buf; | |
| 7 | 495 } |
| 496 #endif | |
| 497 | |
| 498 /* | |
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499 * Catch 22: g_chartab[] can't be initialized before the options are |
| 7 | 500 * initialized, and initializing options may cause transchar() to be called! |
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501 * When chartab_initialized == FALSE don't use g_chartab[]. |
| 7 | 502 * Does NOT work for multi-byte characters, c must be <= 255. |
| 503 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
| 504 * character! | |
| 505 */ | |
| 506 static char_u transchar_buf[7]; | |
| 507 | |
| 508 char_u * | |
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509 transchar(int c) |
| 7 | 510 { |
| 511 int i; | |
| 512 | |
| 513 i = 0; | |
| 514 if (IS_SPECIAL(c)) /* special key code, display as ~@ char */ | |
| 515 { | |
| 516 transchar_buf[0] = '~'; | |
| 517 transchar_buf[1] = '@'; | |
| 518 i = 2; | |
| 519 c = K_SECOND(c); | |
| 520 } | |
| 521 | |
| 522 if ((!chartab_initialized && ( | |
| 523 #ifdef EBCDIC | |
| 524 (c >= 64 && c < 255) | |
| 525 #else | |
| 526 (c >= ' ' && c <= '~') | |
| 527 #endif | |
| 528 )) || (c < 256 && vim_isprintc_strict(c))) | |
| 529 { | |
| 530 /* printable character */ | |
| 531 transchar_buf[i] = c; | |
| 532 transchar_buf[i + 1] = NUL; | |
| 533 } | |
| 534 else | |
| 535 transchar_nonprint(transchar_buf + i, c); | |
| 536 return transchar_buf; | |
| 537 } | |
| 538 | |
| 539 /* | |
| 540 * Like transchar(), but called with a byte instead of a character. Checks | |
| 541 * for an illegal UTF-8 byte. | |
| 542 */ | |
| 543 char_u * | |
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544 transchar_byte(int c) |
| 7 | 545 { |
| 546 if (enc_utf8 && c >= 0x80) | |
| 547 { | |
| 548 transchar_nonprint(transchar_buf, c); | |
| 549 return transchar_buf; | |
| 550 } | |
| 551 return transchar(c); | |
| 552 } | |
| 553 | |
| 554 /* | |
| 555 * Convert non-printable character to two or more printable characters in | |
| 556 * "buf[]". "buf" needs to be able to hold five bytes. | |
| 557 * Does NOT work for multi-byte characters, c must be <= 255. | |
| 558 */ | |
| 559 void | |
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560 transchar_nonprint(char_u *buf, int c) |
| 7 | 561 { |
| 562 if (c == NL) | |
| 563 c = NUL; /* we use newline in place of a NUL */ | |
| 564 else if (c == CAR && get_fileformat(curbuf) == EOL_MAC) | |
| 565 c = NL; /* we use CR in place of NL in this case */ | |
| 566 | |
| 567 if (dy_flags & DY_UHEX) /* 'display' has "uhex" */ | |
| 568 transchar_hex(buf, c); | |
| 569 | |
| 570 #ifdef EBCDIC | |
| 571 /* For EBCDIC only the characters 0-63 and 255 are not printable */ | |
| 572 else if (CtrlChar(c) != 0 || c == DEL) | |
| 573 #else | |
| 574 else if (c <= 0x7f) /* 0x00 - 0x1f and 0x7f */ | |
| 575 #endif | |
| 576 { | |
| 577 buf[0] = '^'; | |
| 578 #ifdef EBCDIC | |
| 579 if (c == DEL) | |
| 580 buf[1] = '?'; /* DEL displayed as ^? */ | |
| 581 else | |
| 582 buf[1] = CtrlChar(c); | |
| 583 #else | |
| 584 buf[1] = c ^ 0x40; /* DEL displayed as ^? */ | |
| 585 #endif | |
| 586 | |
| 587 buf[2] = NUL; | |
| 588 } | |
| 589 else if (enc_utf8 && c >= 0x80) | |
| 590 { | |
| 591 transchar_hex(buf, c); | |
| 592 } | |
| 593 #ifndef EBCDIC | |
| 594 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) /* 0xa0 - 0xfe */ | |
| 595 { | |
| 596 buf[0] = '|'; | |
| 597 buf[1] = c - 0x80; | |
| 598 buf[2] = NUL; | |
| 599 } | |
| 600 #else | |
| 601 else if (c < 64) | |
| 602 { | |
| 603 buf[0] = '~'; | |
| 604 buf[1] = MetaChar(c); | |
| 605 buf[2] = NUL; | |
| 606 } | |
| 607 #endif | |
| 608 else /* 0x80 - 0x9f and 0xff */ | |
| 609 { | |
| 610 /* | |
| 611 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
| 612 * them as '~?' for now | |
| 613 */ | |
| 614 buf[0] = '~'; | |
| 615 #ifdef EBCDIC | |
| 616 buf[1] = '?'; /* 0xff displayed as ~? */ | |
| 617 #else | |
| 618 buf[1] = (c - 0x80) ^ 0x40; /* 0xff displayed as ~? */ | |
| 619 #endif | |
| 620 buf[2] = NUL; | |
| 621 } | |
| 622 } | |
| 623 | |
| 624 void | |
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625 transchar_hex(char_u *buf, int c) |
| 7 | 626 { |
| 627 int i = 0; | |
| 628 | |
| 629 buf[0] = '<'; | |
| 630 if (c > 255) | |
| 631 { | |
| 632 buf[++i] = nr2hex((unsigned)c >> 12); | |
| 633 buf[++i] = nr2hex((unsigned)c >> 8); | |
| 634 } | |
| 635 buf[++i] = nr2hex((unsigned)c >> 4); | |
| 1869 | 636 buf[++i] = nr2hex((unsigned)c); |
| 7 | 637 buf[++i] = '>'; |
| 638 buf[++i] = NUL; | |
| 639 } | |
| 640 | |
| 641 /* | |
| 642 * Convert the lower 4 bits of byte "c" to its hex character. | |
| 643 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
| 644 * function key 1. | |
| 645 */ | |
| 1869 | 646 static unsigned |
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647 nr2hex(unsigned c) |
| 7 | 648 { |
| 649 if ((c & 0xf) <= 9) | |
| 650 return (c & 0xf) + '0'; | |
| 651 return (c & 0xf) - 10 + 'a'; | |
| 652 } | |
| 653 | |
| 654 /* | |
| 655 * Return number of display cells occupied by byte "b". | |
| 656 * Caller must make sure 0 <= b <= 255. | |
| 657 * For multi-byte mode "b" must be the first byte of a character. | |
| 658 * A TAB is counted as two cells: "^I". | |
| 659 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
| 660 * cells depends on further bytes. | |
| 661 */ | |
| 662 int | |
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663 byte2cells(int b) |
| 7 | 664 { |
| 665 if (enc_utf8 && b >= 0x80) | |
| 666 return 0; | |
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667 return (g_chartab[b] & CT_CELL_MASK); |
| 7 | 668 } |
| 669 | |
| 670 /* | |
| 671 * Return number of display cells occupied by character "c". | |
| 672 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
| 673 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 674 */ | |
| 675 int | |
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676 char2cells(int c) |
| 7 | 677 { |
| 678 if (IS_SPECIAL(c)) | |
| 679 return char2cells(K_SECOND(c)) + 2; | |
| 680 if (c >= 0x80) | |
| 681 { | |
| 682 /* UTF-8: above 0x80 need to check the value */ | |
| 683 if (enc_utf8) | |
| 684 return utf_char2cells(c); | |
| 685 /* DBCS: double-byte means double-width, except for euc-jp with first | |
| 686 * byte 0x8e */ | |
| 687 if (enc_dbcs != 0 && c >= 0x100) | |
| 688 { | |
| 689 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
| 690 return 1; | |
| 691 return 2; | |
| 692 } | |
| 693 } | |
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694 return (g_chartab[c & 0xff] & CT_CELL_MASK); |
| 7 | 695 } |
| 696 | |
| 697 /* | |
| 698 * Return number of display cells occupied by character at "*p". | |
| 699 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 700 */ | |
| 701 int | |
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702 ptr2cells(char_u *p) |
| 7 | 703 { |
| 704 /* For UTF-8 we need to look at more bytes if the first byte is >= 0x80. */ | |
| 705 if (enc_utf8 && *p >= 0x80) | |
| 706 return utf_ptr2cells(p); | |
| 707 /* For DBCS we can tell the cell count from the first byte. */ | |
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708 return (g_chartab[*p] & CT_CELL_MASK); |
| 7 | 709 } |
| 710 | |
| 711 /* | |
| 3292 | 712 * Return the number of character cells string "s" will take on the screen, |
| 7 | 713 * counting TABs as two characters: "^I". |
| 714 */ | |
| 715 int | |
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716 vim_strsize(char_u *s) |
| 7 | 717 { |
| 718 return vim_strnsize(s, (int)MAXCOL); | |
| 719 } | |
| 720 | |
| 721 /* | |
| 3292 | 722 * Return the number of character cells string "s[len]" will take on the |
| 723 * screen, counting TABs as two characters: "^I". | |
| 7 | 724 */ |
| 725 int | |
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726 vim_strnsize(char_u *s, int len) |
| 7 | 727 { |
| 728 int size = 0; | |
| 729 | |
| 730 while (*s != NUL && --len >= 0) | |
| 731 if (has_mbyte) | |
| 732 { | |
| 474 | 733 int l = (*mb_ptr2len)(s); |
| 7 | 734 |
| 735 size += ptr2cells(s); | |
| 736 s += l; | |
| 737 len -= l - 1; | |
| 738 } | |
| 739 else | |
| 740 size += byte2cells(*s++); | |
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741 |
| 7 | 742 return size; |
| 743 } | |
| 744 | |
| 745 /* | |
| 746 * Return the number of characters 'c' will take on the screen, taking | |
| 747 * into account the size of a tab. | |
| 748 * Use a define to make it fast, this is used very often!!! | |
| 749 * Also see getvcol() below. | |
| 750 */ | |
| 751 | |
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752 #ifdef FEAT_VARTABS |
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753 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
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754 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
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755 { \ |
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756 return tabstop_padding(col, (buf)->b_p_ts, (buf)->b_p_vts_array); \ |
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757 } \ |
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758 else \ |
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759 return ptr2cells(p); |
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760 #else |
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761 # define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ |
| 7 | 762 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ |
| 763 { \ | |
| 764 int ts; \ | |
| 765 ts = (buf)->b_p_ts; \ | |
| 766 return (int)(ts - (col % ts)); \ | |
| 767 } \ | |
| 768 else \ | |
| 769 return ptr2cells(p); | |
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770 #endif |
| 7 | 771 |
| 772 int | |
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773 chartabsize(char_u *p, colnr_T col) |
| 7 | 774 { |
| 775 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
| 776 } | |
| 777 | |
| 778 #ifdef FEAT_LINEBREAK | |
| 779 static int | |
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780 win_chartabsize(win_T *wp, char_u *p, colnr_T col) |
| 7 | 781 { |
| 782 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
| 783 } | |
| 784 #endif | |
| 785 | |
| 786 /* | |
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787 * Return the number of characters the string 's' will take on the screen, |
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788 * taking into account the size of a tab. |
| 7 | 789 */ |
| 790 int | |
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791 linetabsize(char_u *s) |
| 7 | 792 { |
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793 return linetabsize_col(0, s); |
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794 } |
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795 |
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796 /* |
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797 * Like linetabsize(), but starting at column "startcol". |
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798 */ |
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799 int |
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800 linetabsize_col(int startcol, char_u *s) |
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801 { |
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802 colnr_T col = startcol; |
| 5995 | 803 char_u *line = s; /* pointer to start of line, for breakindent */ |
| 7 | 804 |
| 805 while (*s != NUL) | |
| 5995 | 806 col += lbr_chartabsize_adv(line, &s, col); |
| 7 | 807 return (int)col; |
| 808 } | |
| 809 | |
| 810 /* | |
| 811 * Like linetabsize(), but for a given window instead of the current one. | |
| 812 */ | |
| 813 int | |
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814 win_linetabsize(win_T *wp, char_u *line, colnr_T len) |
| 7 | 815 { |
| 816 colnr_T col = 0; | |
| 817 char_u *s; | |
| 818 | |
| 5995 | 819 for (s = line; *s != NUL && (len == MAXCOL || s < line + len); |
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820 MB_PTR_ADV(s)) |
| 5995 | 821 col += win_lbr_chartabsize(wp, line, s, col, NULL); |
| 7 | 822 return (int)col; |
| 823 } | |
| 824 | |
| 825 /* | |
| 42 | 826 * Return TRUE if 'c' is a normal identifier character: |
| 827 * Letters and characters from the 'isident' option. | |
| 7 | 828 */ |
| 829 int | |
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830 vim_isIDc(int c) |
| 7 | 831 { |
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832 return (c > 0 && c < 0x100 && (g_chartab[c] & CT_ID_CHAR)); |
| 7 | 833 } |
| 834 | |
| 835 /* | |
| 836 * return TRUE if 'c' is a keyword character: Letters and characters from | |
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837 * 'iskeyword' option for the current buffer. |
| 7 | 838 * For multi-byte characters mb_get_class() is used (builtin rules). |
| 839 */ | |
| 840 int | |
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841 vim_iswordc(int c) |
| 7 | 842 { |
| 4043 | 843 return vim_iswordc_buf(c, curbuf); |
| 844 } | |
| 845 | |
| 846 int | |
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847 vim_iswordc_buf(int c, buf_T *buf) |
| 4043 | 848 { |
| 7 | 849 if (c >= 0x100) |
| 850 { | |
| 851 if (enc_dbcs != 0) | |
| 1869 | 852 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
| 7 | 853 if (enc_utf8) |
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854 return utf_class_buf(c, buf) >= 2; |
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855 return FALSE; |
| 7 | 856 } |
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857 return (c > 0 && GET_CHARTAB(buf, c) != 0); |
| 7 | 858 } |
| 859 | |
| 860 /* | |
| 861 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
| 862 */ | |
| 863 int | |
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864 vim_iswordp(char_u *p) |
| 7 | 865 { |
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866 return vim_iswordp_buf(p, curbuf); |
| 7 | 867 } |
| 868 | |
| 869 int | |
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870 vim_iswordp_buf(char_u *p, buf_T *buf) |
| 7 | 871 { |
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872 int c = *p; |
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873 |
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874 if (has_mbyte && MB_BYTE2LEN(c) > 1) |
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875 c = (*mb_ptr2char)(p); |
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876 return vim_iswordc_buf(c, buf); |
| 7 | 877 } |
| 878 | |
| 879 /* | |
| 880 * return TRUE if 'c' is a valid file-name character | |
| 881 * Assume characters above 0x100 are valid (multi-byte). | |
| 882 */ | |
| 883 int | |
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884 vim_isfilec(int c) |
| 7 | 885 { |
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886 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_FNAME_CHAR))); |
| 7 | 887 } |
| 888 | |
| 889 /* | |
| 1369 | 890 * return TRUE if 'c' is a valid file-name character or a wildcard character |
| 891 * Assume characters above 0x100 are valid (multi-byte). | |
| 892 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
| 893 * returns false. | |
| 894 */ | |
| 895 int | |
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896 vim_isfilec_or_wc(int c) |
| 1369 | 897 { |
| 898 char_u buf[2]; | |
| 899 | |
| 900 buf[0] = (char_u)c; | |
| 901 buf[1] = NUL; | |
| 902 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
| 903 } | |
| 904 | |
| 905 /* | |
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906 * Return TRUE if 'c' is a printable character. |
| 7 | 907 * Assume characters above 0x100 are printable (multi-byte), except for |
| 908 * Unicode. | |
| 909 */ | |
| 910 int | |
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911 vim_isprintc(int c) |
| 7 | 912 { |
| 913 if (enc_utf8 && c >= 0x100) | |
| 914 return utf_printable(c); | |
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915 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 916 } |
| 917 | |
| 918 /* | |
| 919 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
| 920 * byte of a double-byte character. | |
| 921 */ | |
| 922 int | |
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923 vim_isprintc_strict(int c) |
| 7 | 924 { |
| 925 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
| 926 return FALSE; | |
| 927 if (enc_utf8 && c >= 0x100) | |
| 928 return utf_printable(c); | |
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929 return (c >= 0x100 || (c > 0 && (g_chartab[c] & CT_PRINT_CHAR))); |
| 7 | 930 } |
| 931 | |
| 932 /* | |
| 933 * like chartabsize(), but also check for line breaks on the screen | |
| 934 */ | |
| 935 int | |
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936 lbr_chartabsize( |
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937 char_u *line UNUSED, /* start of the line */ |
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938 unsigned char *s, |
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939 colnr_T col) |
| 7 | 940 { |
| 941 #ifdef FEAT_LINEBREAK | |
| 5995 | 942 if (!curwin->w_p_lbr && *p_sbr == NUL && !curwin->w_p_bri) |
| 7 | 943 { |
| 944 #endif | |
| 945 if (curwin->w_p_wrap) | |
| 946 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
| 947 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
| 948 #ifdef FEAT_LINEBREAK | |
| 949 } | |
| 5995 | 950 return win_lbr_chartabsize(curwin, line == NULL ? s : line, s, col, NULL); |
| 7 | 951 #endif |
| 952 } | |
| 953 | |
| 954 /* | |
| 955 * Call lbr_chartabsize() and advance the pointer. | |
| 956 */ | |
| 957 int | |
|
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958 lbr_chartabsize_adv( |
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959 char_u *line, /* start of the line */ |
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960 char_u **s, |
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961 colnr_T col) |
| 7 | 962 { |
| 963 int retval; | |
| 964 | |
| 5995 | 965 retval = lbr_chartabsize(line, *s, col); |
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966 MB_PTR_ADV(*s); |
| 7 | 967 return retval; |
| 968 } | |
| 969 | |
| 970 /* | |
| 971 * This function is used very often, keep it fast!!!! | |
| 972 * | |
| 973 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
| 974 * string at start of line. Warning: *headp is only set if it's a non-zero | |
| 975 * value, init to 0 before calling. | |
| 976 */ | |
| 977 int | |
|
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978 win_lbr_chartabsize( |
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979 win_T *wp, |
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980 char_u *line UNUSED, /* start of the line */ |
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981 char_u *s, |
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982 colnr_T col, |
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983 int *headp UNUSED) |
| 7 | 984 { |
| 985 #ifdef FEAT_LINEBREAK | |
| 986 int c; | |
| 987 int size; | |
| 988 colnr_T col2; | |
| 6024 | 989 colnr_T col_adj = 0; /* col + screen size of tab */ |
| 7 | 990 colnr_T colmax; |
| 991 int added; | |
| 992 int mb_added = 0; | |
| 993 int numberextra; | |
| 994 char_u *ps; | |
| 995 int tab_corr = (*s == TAB); | |
| 236 | 996 int n; |
| 7 | 997 |
| 998 /* | |
| 5995 | 999 * No 'linebreak', 'showbreak' and 'breakindent': return quickly. |
| 7 | 1000 */ |
| 5995 | 1001 if (!wp->w_p_lbr && !wp->w_p_bri && *p_sbr == NUL) |
| 7 | 1002 #endif |
| 1003 { | |
| 1004 if (wp->w_p_wrap) | |
| 1005 return win_nolbr_chartabsize(wp, s, col, headp); | |
| 1006 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
| 1007 } | |
| 1008 | |
| 1009 #ifdef FEAT_LINEBREAK | |
| 1010 /* | |
| 1011 * First get normal size, without 'linebreak' | |
| 1012 */ | |
| 1013 size = win_chartabsize(wp, s, col); | |
| 1014 c = *s; | |
| 6024 | 1015 if (tab_corr) |
| 1016 col_adj = size - 1; | |
| 7 | 1017 |
| 1018 /* | |
| 1019 * If 'linebreak' set check at a blank before a non-blank if the line | |
| 1020 * needs a break here | |
| 1021 */ | |
| 1022 if (wp->w_p_lbr | |
|
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1023 && VIM_ISBREAK(c) |
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1024 && !VIM_ISBREAK((int)s[1]) |
| 7 | 1025 && wp->w_p_wrap |
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1026 && wp->w_width != 0) |
| 7 | 1027 { |
| 1028 /* | |
| 1029 * Count all characters from first non-blank after a blank up to next | |
| 1030 * non-blank after a blank. | |
| 1031 */ | |
| 1032 numberextra = win_col_off(wp); | |
| 1033 col2 = col; | |
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1034 colmax = (colnr_T)(wp->w_width - numberextra - col_adj); |
| 7 | 1035 if (col >= colmax) |
| 236 | 1036 { |
| 6024 | 1037 colmax += col_adj; |
| 1038 n = colmax + win_col_off2(wp); | |
| 236 | 1039 if (n > 0) |
| 6024 | 1040 colmax += (((col - colmax) / n) + 1) * n - col_adj; |
| 236 | 1041 } |
| 1042 | |
| 7 | 1043 for (;;) |
| 1044 { | |
| 1045 ps = s; | |
|
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1046 MB_PTR_ADV(s); |
| 7 | 1047 c = *s; |
| 1048 if (!(c != NUL | |
|
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1049 && (VIM_ISBREAK(c) |
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1050 || (!VIM_ISBREAK(c) |
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1051 && (col2 == col || !VIM_ISBREAK((int)*ps)))))) |
| 7 | 1052 break; |
| 1053 | |
| 1054 col2 += win_chartabsize(wp, s, col2); | |
| 1055 if (col2 >= colmax) /* doesn't fit */ | |
| 1056 { | |
| 6024 | 1057 size = colmax - col + col_adj; |
| 7 | 1058 break; |
| 1059 } | |
| 1060 } | |
| 1061 } | |
| 1062 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
| 1063 && wp->w_p_wrap && in_win_border(wp, col)) | |
| 1064 { | |
| 1065 ++size; /* Count the ">" in the last column. */ | |
| 1066 mb_added = 1; | |
| 1067 } | |
| 1068 | |
| 1069 /* | |
| 5995 | 1070 * May have to add something for 'breakindent' and/or 'showbreak' |
| 1071 * string at start of line. | |
| 7 | 1072 * Set *headp to the size of what we add. |
| 1073 */ | |
| 1074 added = 0; | |
| 5995 | 1075 if ((*p_sbr != NUL || wp->w_p_bri) && wp->w_p_wrap && col != 0) |
| 7 | 1076 { |
| 6503 | 1077 colnr_T sbrlen = 0; |
| 1078 int numberwidth = win_col_off(wp); | |
| 1079 | |
| 1080 numberextra = numberwidth; | |
| 7 | 1081 col += numberextra + mb_added; |
|
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1082 if (col >= (colnr_T)wp->w_width) |
| 7 | 1083 { |
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1084 col -= wp->w_width; |
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1085 numberextra = wp->w_width - (numberextra - win_col_off2(wp)); |
| 6503 | 1086 if (col >= numberextra && numberextra > 0) |
| 6312 | 1087 col %= numberextra; |
| 6288 | 1088 if (*p_sbr != NUL) |
| 1089 { | |
| 6503 | 1090 sbrlen = (colnr_T)MB_CHARLEN(p_sbr); |
| 6288 | 1091 if (col >= sbrlen) |
| 1092 col -= sbrlen; | |
| 1093 } | |
| 6503 | 1094 if (col >= numberextra && numberextra > 0) |
| 7 | 1095 col = col % numberextra; |
| 6503 | 1096 else if (col > 0 && numberextra > 0) |
| 1097 col += numberwidth - win_col_off2(wp); | |
| 1098 | |
| 1099 numberwidth -= win_col_off2(wp); | |
| 7 | 1100 } |
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1101 if (col == 0 || col + size + sbrlen > (colnr_T)wp->w_width) |
| 7 | 1102 { |
| 5995 | 1103 added = 0; |
| 1104 if (*p_sbr != NUL) | |
| 6503 | 1105 { |
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1106 if (size + sbrlen + numberwidth > (colnr_T)wp->w_width) |
| 6503 | 1107 { |
| 1108 /* calculate effective window width */ | |
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1109 int width = (colnr_T)wp->w_width - sbrlen - numberwidth; |
|
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1110 int prev_width = col |
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1111 ? ((colnr_T)wp->w_width - (sbrlen + col)) : 0; |
| 6503 | 1112 if (width == 0) |
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1113 width = (colnr_T)wp->w_width; |
| 6503 | 1114 added += ((size - prev_width) / width) * vim_strsize(p_sbr); |
| 1115 if ((size - prev_width) % width) | |
| 1116 /* wrapped, add another length of 'sbr' */ | |
| 1117 added += vim_strsize(p_sbr); | |
| 1118 } | |
| 1119 else | |
| 1120 added += vim_strsize(p_sbr); | |
| 1121 } | |
| 5995 | 1122 if (wp->w_p_bri) |
| 1123 added += get_breakindent_win(wp, line); | |
| 1124 | |
| 6160 | 1125 size += added; |
| 7 | 1126 if (col != 0) |
| 1127 added = 0; | |
| 1128 } | |
| 1129 } | |
| 1130 if (headp != NULL) | |
| 1131 *headp = added + mb_added; | |
| 1132 return size; | |
| 1133 #endif | |
| 1134 } | |
| 1135 | |
| 1136 /* | |
| 1137 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
| 1138 * 'wrap' is on. This means we need to check for a double-byte character that | |
| 1139 * doesn't fit at the end of the screen line. | |
| 1140 */ | |
| 1141 static int | |
|
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1142 win_nolbr_chartabsize( |
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1143 win_T *wp, |
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1144 char_u *s, |
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1145 colnr_T col, |
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1146 int *headp) |
| 7 | 1147 { |
| 1148 int n; | |
| 1149 | |
| 1150 if (*s == TAB && (!wp->w_p_list || lcs_tab1)) | |
| 1151 { | |
|
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1152 # ifdef FEAT_VARTABS |
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1153 return tabstop_padding(col, wp->w_buffer->b_p_ts, |
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1154 wp->w_buffer->b_p_vts_array); |
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1155 # else |
| 7 | 1156 n = wp->w_buffer->b_p_ts; |
| 1157 return (int)(n - (col % n)); | |
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1158 # endif |
| 7 | 1159 } |
| 1160 n = ptr2cells(s); | |
| 1161 /* Add one cell for a double-width character in the last column of the | |
| 1162 * window, displayed with a ">". */ | |
| 1163 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) | |
| 1164 { | |
| 1165 if (headp != NULL) | |
| 1166 *headp = 1; | |
| 1167 return 3; | |
| 1168 } | |
| 1169 return n; | |
| 1170 } | |
| 1171 | |
| 1172 /* | |
| 1173 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
| 1174 * "wp". | |
| 1175 */ | |
| 1176 int | |
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1177 in_win_border(win_T *wp, colnr_T vcol) |
| 7 | 1178 { |
| 1869 | 1179 int width1; /* width of first line (after line number) */ |
| 1180 int width2; /* width of further lines */ | |
| 7 | 1181 |
| 1182 if (wp->w_width == 0) /* there is no border */ | |
| 1183 return FALSE; | |
|
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1184 width1 = wp->w_width - win_col_off(wp); |
| 1869 | 1185 if ((int)vcol < width1 - 1) |
| 7 | 1186 return FALSE; |
| 1869 | 1187 if ((int)vcol == width1 - 1) |
| 7 | 1188 return TRUE; |
| 1189 width2 = width1 + win_col_off2(wp); | |
| 1970 | 1190 if (width2 <= 0) |
| 1191 return FALSE; | |
| 7 | 1192 return ((vcol - width1) % width2 == width2 - 1); |
| 1193 } | |
| 1194 | |
| 1195 /* | |
| 1196 * Get virtual column number of pos. | |
| 1197 * start: on the first position of this character (TAB, ctrl) | |
| 1198 * cursor: where the cursor is on this character (first char, except for TAB) | |
| 1199 * end: on the last position of this character (TAB, ctrl) | |
| 1200 * | |
| 1201 * This is used very often, keep it fast! | |
| 1202 */ | |
| 1203 void | |
|
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1204 getvcol( |
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1205 win_T *wp, |
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1206 pos_T *pos, |
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1207 colnr_T *start, |
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1208 colnr_T *cursor, |
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1209 colnr_T *end) |
| 7 | 1210 { |
| 1211 colnr_T vcol; | |
| 1212 char_u *ptr; /* points to current char */ | |
| 1213 char_u *posptr; /* points to char at pos->col */ | |
| 5995 | 1214 char_u *line; /* start of the line */ |
| 7 | 1215 int incr; |
| 1216 int head; | |
|
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1217 #ifdef FEAT_VARTABS |
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1218 int *vts = wp->w_buffer->b_p_vts_array; |
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1219 #endif |
| 7 | 1220 int ts = wp->w_buffer->b_p_ts; |
| 1221 int c; | |
| 1222 | |
| 1223 vcol = 0; | |
| 5995 | 1224 line = ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); |
|
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1225 if (pos->col == MAXCOL) |
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1226 posptr = NULL; /* continue until the NUL */ |
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1227 else |
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1228 { |
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1229 /* Special check for an empty line, which can happen on exit, when |
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1230 * ml_get_buf() always returns an empty string. */ |
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1231 if (*ptr == NUL) |
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1232 pos->col = 0; |
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1233 posptr = ptr + pos->col; |
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1234 if (has_mbyte) |
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1235 /* always start on the first byte */ |
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1236 posptr -= (*mb_head_off)(line, posptr); |
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1237 } |
| 7 | 1238 |
| 1239 /* | |
| 1240 * This function is used very often, do some speed optimizations. | |
| 5995 | 1241 * When 'list', 'linebreak', 'showbreak' and 'breakindent' are not set |
| 1242 * use a simple loop. | |
| 7 | 1243 * Also use this when 'list' is set but tabs take their normal size. |
| 1244 */ | |
| 1245 if ((!wp->w_p_list || lcs_tab1 != NUL) | |
| 1246 #ifdef FEAT_LINEBREAK | |
| 5995 | 1247 && !wp->w_p_lbr && *p_sbr == NUL && !wp->w_p_bri |
| 7 | 1248 #endif |
| 1249 ) | |
| 1250 { | |
| 1251 for (;;) | |
| 1252 { | |
| 1253 head = 0; | |
| 1254 c = *ptr; | |
| 1255 /* make sure we don't go past the end of the line */ | |
| 1256 if (c == NUL) | |
| 1257 { | |
| 1258 incr = 1; /* NUL at end of line only takes one column */ | |
| 1259 break; | |
| 1260 } | |
| 1261 /* A tab gets expanded, depending on the current column */ | |
| 1262 if (c == TAB) | |
|
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1263 #ifdef FEAT_VARTABS |
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1264 incr = tabstop_padding(vcol, ts, vts); |
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1265 #else |
| 7 | 1266 incr = ts - (vcol % ts); |
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1267 #endif |
| 7 | 1268 else |
| 1269 { | |
| 1270 if (has_mbyte) | |
| 1271 { | |
| 1272 /* For utf-8, if the byte is >= 0x80, need to look at | |
| 1273 * further bytes to find the cell width. */ | |
| 1274 if (enc_utf8 && c >= 0x80) | |
| 1275 incr = utf_ptr2cells(ptr); | |
| 1276 else | |
|
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1277 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1278 |
| 1279 /* If a double-cell char doesn't fit at the end of a line | |
| 1280 * it wraps to the next line, it's like this char is three | |
| 1281 * cells wide. */ | |
| 1546 | 1282 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
| 1283 && in_win_border(wp, vcol)) | |
| 7 | 1284 { |
| 1285 ++incr; | |
| 1286 head = 1; | |
| 1287 } | |
| 1288 } | |
| 1289 else | |
|
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1290 incr = g_chartab[c] & CT_CELL_MASK; |
| 7 | 1291 } |
| 1292 | |
|
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1293 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
| 7 | 1294 break; |
| 1295 | |
| 1296 vcol += incr; | |
|
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1297 MB_PTR_ADV(ptr); |
| 7 | 1298 } |
| 1299 } | |
| 1300 else | |
| 1301 { | |
| 1302 for (;;) | |
| 1303 { | |
| 1304 /* A tab gets expanded, depending on the current column */ | |
| 1305 head = 0; | |
| 5995 | 1306 incr = win_lbr_chartabsize(wp, line, ptr, vcol, &head); |
| 7 | 1307 /* make sure we don't go past the end of the line */ |
| 1308 if (*ptr == NUL) | |
| 1309 { | |
| 1310 incr = 1; /* NUL at end of line only takes one column */ | |
| 1311 break; | |
| 1312 } | |
| 1313 | |
|
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1314 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
| 7 | 1315 break; |
| 1316 | |
| 1317 vcol += incr; | |
|
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1318 MB_PTR_ADV(ptr); |
| 7 | 1319 } |
| 1320 } | |
| 1321 if (start != NULL) | |
| 1322 *start = vcol + head; | |
| 1323 if (end != NULL) | |
| 1324 *end = vcol + incr - 1; | |
| 1325 if (cursor != NULL) | |
| 1326 { | |
| 1327 if (*ptr == TAB | |
| 1328 && (State & NORMAL) | |
| 1329 && !wp->w_p_list | |
| 1330 && !virtual_active() | |
|
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1331 && !(VIsual_active |
|
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1332 && (*p_sel == 'e' || LTOREQ_POS(*pos, VIsual))) |
| 7 | 1333 ) |
| 1334 *cursor = vcol + incr - 1; /* cursor at end */ | |
| 1335 else | |
| 1336 *cursor = vcol + head; /* cursor at start */ | |
| 1337 } | |
| 1338 } | |
| 1339 | |
| 1340 /* | |
| 1341 * Get virtual cursor column in the current window, pretending 'list' is off. | |
| 1342 */ | |
| 1343 colnr_T | |
|
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1344 getvcol_nolist(pos_T *posp) |
| 7 | 1345 { |
| 1346 int list_save = curwin->w_p_list; | |
| 1347 colnr_T vcol; | |
| 1348 | |
| 1349 curwin->w_p_list = FALSE; | |
|
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1350 if (posp->coladd) |
|
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1351 getvvcol(curwin, posp, NULL, &vcol, NULL); |
|
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1352 else |
|
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1353 getvcol(curwin, posp, NULL, &vcol, NULL); |
| 7 | 1354 curwin->w_p_list = list_save; |
| 1355 return vcol; | |
| 1356 } | |
| 1357 | |
| 1358 /* | |
| 1359 * Get virtual column in virtual mode. | |
| 1360 */ | |
| 1361 void | |
|
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1362 getvvcol( |
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1363 win_T *wp, |
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1364 pos_T *pos, |
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1365 colnr_T *start, |
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1366 colnr_T *cursor, |
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1367 colnr_T *end) |
| 7 | 1368 { |
| 1369 colnr_T col; | |
| 1370 colnr_T coladd; | |
| 1371 colnr_T endadd; | |
| 1372 char_u *ptr; | |
| 1373 | |
| 1374 if (virtual_active()) | |
| 1375 { | |
| 1376 /* For virtual mode, only want one value */ | |
| 1377 getvcol(wp, pos, &col, NULL, NULL); | |
| 1378 | |
| 1379 coladd = pos->coladd; | |
| 1380 endadd = 0; | |
| 1381 /* Cannot put the cursor on part of a wide character. */ | |
| 1382 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); | |
| 1869 | 1383 if (pos->col < (colnr_T)STRLEN(ptr)) |
| 7 | 1384 { |
| 1385 int c = (*mb_ptr2char)(ptr + pos->col); | |
| 1386 | |
| 1387 if (c != TAB && vim_isprintc(c)) | |
| 1388 { | |
| 1869 | 1389 endadd = (colnr_T)(char2cells(c) - 1); |
| 557 | 1390 if (coladd > endadd) /* past end of line */ |
| 1391 endadd = 0; | |
| 7 | 1392 else |
| 1393 coladd = 0; | |
| 1394 } | |
| 1395 } | |
| 1396 col += coladd; | |
| 1397 if (start != NULL) | |
| 1398 *start = col; | |
| 1399 if (cursor != NULL) | |
| 1400 *cursor = col; | |
| 1401 if (end != NULL) | |
| 1402 *end = col + endadd; | |
| 1403 } | |
| 1404 else | |
| 1405 getvcol(wp, pos, start, cursor, end); | |
| 1406 } | |
| 1407 | |
| 1408 /* | |
| 1409 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
| 1410 * Used for Visual block mode. | |
| 1411 */ | |
| 1412 void | |
|
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1413 getvcols( |
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1414 win_T *wp, |
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1415 pos_T *pos1, |
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1416 pos_T *pos2, |
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1417 colnr_T *left, |
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1418 colnr_T *right) |
| 7 | 1419 { |
| 1420 colnr_T from1, from2, to1, to2; | |
| 1421 | |
|
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1422 if (LT_POSP(pos1, pos2)) |
| 7 | 1423 { |
| 1424 getvvcol(wp, pos1, &from1, NULL, &to1); | |
| 1425 getvvcol(wp, pos2, &from2, NULL, &to2); | |
| 1426 } | |
| 1427 else | |
| 1428 { | |
| 1429 getvvcol(wp, pos2, &from1, NULL, &to1); | |
| 1430 getvvcol(wp, pos1, &from2, NULL, &to2); | |
| 1431 } | |
| 1432 if (from2 < from1) | |
| 1433 *left = from2; | |
| 1434 else | |
| 1435 *left = from1; | |
| 1436 if (to2 > to1) | |
| 1437 { | |
| 1438 if (*p_sel == 'e' && from2 - 1 >= to1) | |
| 1439 *right = from2 - 1; | |
| 1440 else | |
| 1441 *right = to2; | |
| 1442 } | |
| 1443 else | |
| 1444 *right = to1; | |
| 1445 } | |
| 1446 | |
| 1447 /* | |
| 1448 * skipwhite: skip over ' ' and '\t'. | |
| 1449 */ | |
| 1450 char_u * | |
|
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1451 skipwhite(char_u *q) |
| 7 | 1452 { |
| 1687 | 1453 char_u *p = q; |
| 1454 | |
|
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1455 while (VIM_ISWHITE(*p)) /* skip to next non-white */ |
| 7 | 1456 ++p; |
| 1457 return p; | |
| 1458 } | |
| 1459 | |
| 1460 /* | |
|
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1461 * getwhitecols: return the number of whitespace |
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1462 * columns (bytes) at the start of a given line |
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1463 */ |
|
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1464 int |
|
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1465 getwhitecols_curline() |
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1466 { |
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1467 return getwhitecols(ml_get_curline()); |
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1468 } |
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1469 |
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1470 int |
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1471 getwhitecols(char_u *p) |
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1472 { |
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1473 return skipwhite(p) - p; |
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1474 } |
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1475 |
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1476 /* |
| 293 | 1477 * skip over digits |
| 7 | 1478 */ |
| 1479 char_u * | |
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1480 skipdigits(char_u *q) |
| 7 | 1481 { |
| 1687 | 1482 char_u *p = q; |
| 1483 | |
| 7 | 1484 while (VIM_ISDIGIT(*p)) /* skip to next non-digit */ |
| 1485 ++p; | |
| 1486 return p; | |
| 1487 } | |
| 1488 | |
| 741 | 1489 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
| 301 | 1490 /* |
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1491 * skip over binary digits |
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1492 */ |
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1493 char_u * |
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1494 skipbin(char_u *q) |
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1495 { |
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1496 char_u *p = q; |
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1497 |
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1498 while (vim_isbdigit(*p)) /* skip to next non-digit */ |
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1499 ++p; |
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1500 return p; |
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1501 } |
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1502 |
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1503 /* |
| 301 | 1504 * skip over digits and hex characters |
| 1505 */ | |
| 1506 char_u * | |
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1507 skiphex(char_u *q) |
| 301 | 1508 { |
| 1687 | 1509 char_u *p = q; |
| 1510 | |
| 301 | 1511 while (vim_isxdigit(*p)) /* skip to next non-digit */ |
| 1512 ++p; | |
| 1513 return p; | |
| 1514 } | |
| 1515 #endif | |
| 1516 | |
| 293 | 1517 /* |
|
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1518 * skip to bin digit (or NUL after the string) |
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1519 */ |
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1520 char_u * |
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1521 skiptobin(char_u *q) |
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1522 { |
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1523 char_u *p = q; |
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1524 |
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1525 while (*p != NUL && !vim_isbdigit(*p)) /* skip to next digit */ |
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1526 ++p; |
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1527 return p; |
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1528 } |
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1529 |
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1530 /* |
| 293 | 1531 * skip to digit (or NUL after the string) |
| 1532 */ | |
| 1533 char_u * | |
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1534 skiptodigit(char_u *q) |
| 293 | 1535 { |
| 1687 | 1536 char_u *p = q; |
| 1537 | |
| 293 | 1538 while (*p != NUL && !VIM_ISDIGIT(*p)) /* skip to next digit */ |
| 1539 ++p; | |
| 1540 return p; | |
| 1541 } | |
| 1542 | |
| 1543 /* | |
| 1544 * skip to hex character (or NUL after the string) | |
| 1545 */ | |
| 1546 char_u * | |
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1547 skiptohex(char_u *q) |
| 293 | 1548 { |
| 1687 | 1549 char_u *p = q; |
| 1550 | |
| 293 | 1551 while (*p != NUL && !vim_isxdigit(*p)) /* skip to next digit */ |
| 1552 ++p; | |
| 1553 return p; | |
| 1554 } | |
| 1555 | |
| 7 | 1556 /* |
| 1557 * Variant of isdigit() that can handle characters > 0x100. | |
| 1558 * We don't use isdigit() here, because on some systems it also considers | |
| 1559 * superscript 1 to be a digit. | |
| 1560 * Use the VIM_ISDIGIT() macro for simple arguments. | |
| 1561 */ | |
| 1562 int | |
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1563 vim_isdigit(int c) |
| 7 | 1564 { |
| 1565 return (c >= '0' && c <= '9'); | |
| 1566 } | |
| 1567 | |
| 1568 /* | |
| 1569 * Variant of isxdigit() that can handle characters > 0x100. | |
| 1570 * We don't use isxdigit() here, because on some systems it also considers | |
| 1571 * superscript 1 to be a digit. | |
| 1572 */ | |
| 1573 int | |
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1574 vim_isxdigit(int c) |
| 7 | 1575 { |
| 1576 return (c >= '0' && c <= '9') | |
| 1577 || (c >= 'a' && c <= 'f') | |
| 1578 || (c >= 'A' && c <= 'F'); | |
| 1579 } | |
| 1580 | |
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1581 /* |
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1582 * Corollary of vim_isdigit and vim_isxdigit() that can handle |
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1583 * characters > 0x100. |
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1584 */ |
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1585 int |
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1586 vim_isbdigit(int c) |
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1587 { |
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1588 return (c == '0' || c == '1'); |
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1589 } |
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1590 |
| 492 | 1591 /* |
| 1592 * Vim's own character class functions. These exist because many library | |
| 1593 * islower()/toupper() etc. do not work properly: they crash when used with | |
| 1594 * invalid values or can't handle latin1 when the locale is C. | |
| 1595 * Speed is most important here. | |
| 1596 */ | |
| 1597 #define LATIN1LOWER 'l' | |
| 1598 #define LATIN1UPPER 'U' | |
| 1599 | |
| 497 | 1600 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
| 3533 | 1601 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\x7f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xf7\xd8\xd9\xda\xdb\xdc\xdd\xde\xff"; |
| 1602 static char_u latin1lower[257] = " !\"#$%&'()*+,-./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 | 1603 |
| 1604 int | |
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1605 vim_islower(int c) |
| 492 | 1606 { |
| 1607 if (c <= '@') | |
| 1608 return FALSE; | |
| 1609 if (c >= 0x80) | |
| 1610 { | |
| 1611 if (enc_utf8) | |
| 1612 return utf_islower(c); | |
| 1613 if (c >= 0x100) | |
| 1614 { | |
| 1615 #ifdef HAVE_ISWLOWER | |
| 1616 if (has_mbyte) | |
| 1617 return iswlower(c); | |
| 1618 #endif | |
| 1619 /* islower() can't handle these chars and may crash */ | |
| 1620 return FALSE; | |
| 1621 } | |
| 1622 if (enc_latin1like) | |
| 1623 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
| 1624 } | |
| 1625 return islower(c); | |
| 1626 } | |
| 1627 | |
| 1628 int | |
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1629 vim_isupper(int c) |
| 492 | 1630 { |
| 1631 if (c <= '@') | |
| 1632 return FALSE; | |
| 1633 if (c >= 0x80) | |
| 1634 { | |
| 1635 if (enc_utf8) | |
| 1636 return utf_isupper(c); | |
| 1637 if (c >= 0x100) | |
| 1638 { | |
| 1639 #ifdef HAVE_ISWUPPER | |
| 1640 if (has_mbyte) | |
| 1641 return iswupper(c); | |
| 1642 #endif | |
| 1643 /* islower() can't handle these chars and may crash */ | |
| 1644 return FALSE; | |
| 1645 } | |
| 1646 if (enc_latin1like) | |
| 1647 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
| 1648 } | |
| 1649 return isupper(c); | |
| 1650 } | |
| 1651 | |
| 1652 int | |
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1653 vim_toupper(int c) |
| 492 | 1654 { |
| 1655 if (c <= '@') | |
| 1656 return c; | |
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1657 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1658 { |
| 1659 if (enc_utf8) | |
| 1660 return utf_toupper(c); | |
| 1661 if (c >= 0x100) | |
| 1662 { | |
| 1663 #ifdef HAVE_TOWUPPER | |
| 1664 if (has_mbyte) | |
| 1665 return towupper(c); | |
| 1666 #endif | |
| 1667 /* toupper() can't handle these chars and may crash */ | |
| 1668 return c; | |
| 1669 } | |
| 1670 if (enc_latin1like) | |
| 1671 return latin1upper[c]; | |
| 1672 } | |
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1673 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1674 return TOUPPER_ASC(c); |
| 492 | 1675 return TOUPPER_LOC(c); |
| 1676 } | |
| 1677 | |
| 1678 int | |
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1679 vim_tolower(int c) |
| 492 | 1680 { |
| 1681 if (c <= '@') | |
| 1682 return c; | |
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1683 if (c >= 0x80 || !(cmp_flags & CMP_KEEPASCII)) |
| 492 | 1684 { |
| 1685 if (enc_utf8) | |
| 1686 return utf_tolower(c); | |
| 1687 if (c >= 0x100) | |
| 1688 { | |
| 1689 #ifdef HAVE_TOWLOWER | |
| 1690 if (has_mbyte) | |
| 1691 return towlower(c); | |
| 1692 #endif | |
| 1693 /* tolower() can't handle these chars and may crash */ | |
| 1694 return c; | |
| 1695 } | |
| 1696 if (enc_latin1like) | |
| 1697 return latin1lower[c]; | |
| 1698 } | |
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1699 if (c < 0x80 && (cmp_flags & CMP_KEEPASCII)) |
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1700 return TOLOWER_ASC(c); |
| 492 | 1701 return TOLOWER_LOC(c); |
| 1702 } | |
| 1703 | |
| 7 | 1704 /* |
| 1705 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
| 1706 */ | |
| 1707 char_u * | |
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1708 skiptowhite(char_u *p) |
| 7 | 1709 { |
| 1710 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1711 ++p; | |
| 1712 return p; | |
| 1713 } | |
| 1714 | |
| 1715 /* | |
| 1716 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
| 1717 */ | |
| 1718 char_u * | |
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1719 skiptowhite_esc(char_u *p) |
| 7 | 1720 { |
| 1721 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1722 { | |
| 1723 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
| 1724 ++p; | |
| 1725 ++p; | |
| 1726 } | |
| 1727 return p; | |
| 1728 } | |
| 1729 | |
| 1730 /* | |
| 1731 * Getdigits: Get a number from a string and skip over it. | |
| 1732 * Note: the argument is a pointer to a char_u pointer! | |
| 1733 */ | |
| 1734 long | |
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1735 getdigits(char_u **pp) |
| 7 | 1736 { |
| 1737 char_u *p; | |
| 1738 long retval; | |
| 1739 | |
| 1740 p = *pp; | |
| 1741 retval = atol((char *)p); | |
| 1742 if (*p == '-') /* skip negative sign */ | |
| 1743 ++p; | |
| 1744 p = skipdigits(p); /* skip to next non-digit */ | |
| 1745 *pp = p; | |
| 1746 return retval; | |
| 1747 } | |
| 1748 | |
| 1749 /* | |
| 1750 * Return TRUE if "lbuf" is empty or only contains blanks. | |
| 1751 */ | |
| 1752 int | |
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1753 vim_isblankline(char_u *lbuf) |
| 7 | 1754 { |
| 1755 char_u *p; | |
| 1756 | |
| 1757 p = skipwhite(lbuf); | |
| 1758 return (*p == NUL || *p == '\r' || *p == '\n'); | |
| 1759 } | |
| 1760 | |
| 1761 /* | |
| 1762 * Convert a string into a long and/or unsigned long, taking care of | |
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1763 * hexadecimal, octal, and binary numbers. Accepts a '-' sign. |
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1764 * If "prep" is not NULL, returns a flag to indicate the type of the number: |
| 7 | 1765 * 0 decimal |
| 1766 * '0' octal | |
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1767 * 'B' bin |
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1768 * 'b' bin |
| 7 | 1769 * 'X' hex |
| 1770 * 'x' hex | |
| 1771 * If "len" is not NULL, the length of the number in characters is returned. | |
| 1772 * If "nptr" is not NULL, the signed result is returned in it. | |
| 1773 * If "unptr" is not NULL, the unsigned result is returned in it. | |
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1774 * If "what" contains STR2NR_BIN recognize binary numbers |
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1775 * If "what" contains STR2NR_OCT recognize octal numbers |
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1776 * If "what" contains STR2NR_HEX recognize hex numbers |
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1777 * If "what" contains STR2NR_FORCE always assume bin/oct/hex. |
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1778 * If maxlen > 0, check at a maximum maxlen chars. |
| 7 | 1779 */ |
| 1780 void | |
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1781 vim_str2nr( |
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1782 char_u *start, |
|
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1783 int *prep, /* return: type of number 0 = decimal, 'x' |
|
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1784 or 'X' is hex, '0' = octal, 'b' or 'B' |
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1785 is bin */ |
|
7817
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1786 int *len, /* return: detected length of number */ |
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1787 int what, /* what numbers to recognize */ |
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1788 varnumber_T *nptr, /* return: signed result */ |
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1789 uvarnumber_T *unptr, /* return: unsigned result */ |
|
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1790 int maxlen) /* max length of string to check */ |
| 7 | 1791 { |
| 1792 char_u *ptr = start; | |
|
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1793 int pre = 0; /* default is decimal */ |
| 7 | 1794 int negative = FALSE; |
|
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1795 uvarnumber_T un = 0; |
| 39 | 1796 int n; |
| 7 | 1797 |
| 1798 if (ptr[0] == '-') | |
| 1799 { | |
| 1800 negative = TRUE; | |
| 1801 ++ptr; | |
| 1802 } | |
| 1803 | |
|
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1804 /* Recognize hex, octal, and bin. */ |
| 6927 | 1805 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9' |
| 1806 && (maxlen == 0 || maxlen > 1)) | |
| 7 | 1807 { |
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1808 pre = ptr[1]; |
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1809 if ((what & STR2NR_HEX) |
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1810 && (pre == 'X' || pre == 'x') && vim_isxdigit(ptr[2]) |
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1811 && (maxlen == 0 || maxlen > 2)) |
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1812 /* hexadecimal */ |
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1813 ptr += 2; |
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1814 else if ((what & STR2NR_BIN) |
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1815 && (pre == 'B' || pre == 'b') && vim_isbdigit(ptr[2]) |
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1816 && (maxlen == 0 || maxlen > 2)) |
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1817 /* binary */ |
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1818 ptr += 2; |
| 7 | 1819 else |
| 1820 { | |
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1821 /* decimal or octal, default is decimal */ |
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1822 pre = 0; |
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1823 if (what & STR2NR_OCT) |
| 39 | 1824 { |
| 1825 /* Don't interpret "0", "08" or "0129" as octal. */ | |
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1826 for (n = 1; n != maxlen && VIM_ISDIGIT(ptr[n]); ++n) |
| 39 | 1827 { |
| 1828 if (ptr[n] > '7') | |
| 1829 { | |
|
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1830 pre = 0; /* can't be octal */ |
| 39 | 1831 break; |
| 1832 } | |
|
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1833 pre = '0'; /* assume octal */ |
| 39 | 1834 } |
| 1835 } | |
| 7 | 1836 } |
| 1837 } | |
| 1838 | |
| 1839 /* | |
|
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1840 * Do the string-to-numeric conversion "manually" to avoid sscanf quirks. |
|
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1841 */ |
| 6927 | 1842 n = 1; |
|
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1843 if (pre == 'B' || pre == 'b' || what == STR2NR_BIN + STR2NR_FORCE) |
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1844 { |
|
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1845 /* bin */ |
|
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1846 if (pre != 0) |
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1847 n += 2; /* skip over "0b" */ |
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1848 while ('0' <= *ptr && *ptr <= '1') |
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1849 { |
|
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1850 /* avoid ubsan error for overflow */ |
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1851 if (un <= UVARNUM_MAX / 2) |
|
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1852 un = 2 * un + (uvarnumber_T)(*ptr - '0'); |
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1853 else |
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1854 un = UVARNUM_MAX; |
|
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1855 ++ptr; |
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1856 if (n++ == maxlen) |
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1857 break; |
|
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1858 } |
|
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1859 } |
|
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|
1860 else if (pre == '0' || what == STR2NR_OCT + STR2NR_FORCE) |
| 7 | 1861 { |
| 293 | 1862 /* octal */ |
| 1863 while ('0' <= *ptr && *ptr <= '7') | |
| 7 | 1864 { |
|
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1865 /* avoid ubsan error for overflow */ |
|
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1866 if (un <= UVARNUM_MAX / 8) |
|
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1867 un = 8 * un + (uvarnumber_T)(*ptr - '0'); |
|
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1868 else |
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1869 un = UVARNUM_MAX; |
| 293 | 1870 ++ptr; |
| 6927 | 1871 if (n++ == maxlen) |
| 1872 break; | |
| 7 | 1873 } |
| 293 | 1874 } |
|
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|
1875 else if (pre != 0 || what == STR2NR_HEX + STR2NR_FORCE) |
| 293 | 1876 { |
| 1877 /* hex */ | |
|
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1878 if (pre != 0) |
|
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1879 n += 2; /* skip over "0x" */ |
| 293 | 1880 while (vim_isxdigit(*ptr)) |
| 7 | 1881 { |
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1882 /* avoid ubsan error for overflow */ |
|
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1883 if (un <= UVARNUM_MAX / 16) |
|
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1884 un = 16 * un + (uvarnumber_T)hex2nr(*ptr); |
|
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1885 else |
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1886 un = UVARNUM_MAX; |
| 293 | 1887 ++ptr; |
| 6927 | 1888 if (n++ == maxlen) |
| 1889 break; | |
| 7 | 1890 } |
| 1891 } | |
| 1892 else | |
| 1893 { | |
| 1894 /* decimal */ | |
| 1895 while (VIM_ISDIGIT(*ptr)) | |
| 1896 { | |
|
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1897 uvarnumber_T digit = (uvarnumber_T)(*ptr - '0'); |
|
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1898 |
|
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1899 /* avoid ubsan error for overflow */ |
|
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1900 if (un < UVARNUM_MAX / 10 |
|
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1901 || (un == UVARNUM_MAX / 10 && digit <= UVARNUM_MAX % 10)) |
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1902 un = 10 * un + digit; |
|
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1903 else |
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1904 un = UVARNUM_MAX; |
| 7 | 1905 ++ptr; |
| 6927 | 1906 if (n++ == maxlen) |
| 1907 break; | |
| 7 | 1908 } |
| 1909 } | |
| 1910 | |
|
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1911 if (prep != NULL) |
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1912 *prep = pre; |
| 7 | 1913 if (len != NULL) |
| 1914 *len = (int)(ptr - start); | |
| 1915 if (nptr != NULL) | |
| 16 | 1916 { |
| 1917 if (negative) /* account for leading '-' for decimal numbers */ | |
|
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1918 { |
|
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1919 /* avoid ubsan error for overflow */ |
|
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1920 if (un > VARNUM_MAX) |
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1921 *nptr = VARNUM_MIN; |
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1922 else |
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1923 *nptr = -(varnumber_T)un; |
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1924 } |
| 16 | 1925 else |
|
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1926 { |
|
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1927 if (un > VARNUM_MAX) |
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1928 un = VARNUM_MAX; |
|
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1929 *nptr = (varnumber_T)un; |
|
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1930 } |
| 16 | 1931 } |
| 7 | 1932 if (unptr != NULL) |
| 1933 *unptr = un; | |
| 1934 } | |
| 1935 | |
| 1936 /* | |
| 1937 * Return the value of a single hex character. | |
| 1938 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
| 1939 */ | |
| 1940 int | |
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1941 hex2nr(int c) |
| 7 | 1942 { |
| 1943 if (c >= 'a' && c <= 'f') | |
| 1944 return c - 'a' + 10; | |
| 1945 if (c >= 'A' && c <= 'F') | |
| 1946 return c - 'A' + 10; | |
| 1947 return c - '0'; | |
| 1948 } | |
| 1949 | |
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1950 #if defined(FEAT_TERMRESPONSE) || defined(FEAT_GUI_GTK) || defined(PROTO) |
| 7 | 1951 /* |
| 1952 * Convert two hex characters to a byte. | |
| 1953 * Return -1 if one of the characters is not hex. | |
| 1954 */ | |
| 1955 int | |
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1956 hexhex2nr(char_u *p) |
| 7 | 1957 { |
| 1958 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
| 1959 return -1; | |
| 1960 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
| 1961 } | |
| 1962 #endif | |
| 1963 | |
| 1964 /* | |
| 1965 * Return TRUE if "str" starts with a backslash that should be removed. | |
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1966 * For MS-DOS, MSWIN and OS/2 this is only done when the character after the |
| 7 | 1967 * backslash is not a normal file name character. |
| 1968 * '$' is a valid file name character, we don't remove the backslash before | |
| 1969 * it. This means it is not possible to use an environment variable after a | |
| 1970 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
| 1971 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
| 1972 * removed. Assume a file name doesn't start with a space. | |
| 1973 * For multi-byte names, never remove a backslash before a non-ascii | |
| 1974 * character, assume that all multi-byte characters are valid file name | |
| 1975 * characters. | |
| 1976 */ | |
| 1977 int | |
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1978 rem_backslash(char_u *str) |
| 7 | 1979 { |
| 1980 #ifdef BACKSLASH_IN_FILENAME | |
| 1981 return (str[0] == '\\' | |
| 1982 && str[1] < 0x80 | |
| 1983 && (str[1] == ' ' | |
| 1984 || (str[1] != NUL | |
| 1985 && str[1] != '*' | |
| 1986 && str[1] != '?' | |
| 1987 && !vim_isfilec(str[1])))); | |
| 1988 #else | |
| 1989 return (str[0] == '\\' && str[1] != NUL); | |
| 1990 #endif | |
| 1991 } | |
| 1992 | |
| 1993 /* | |
| 1994 * Halve the number of backslashes in a file name argument. | |
| 1995 * For MS-DOS we only do this if the character after the backslash | |
| 1996 * is not a normal file character. | |
| 1997 */ | |
| 1998 void | |
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1999 backslash_halve(char_u *p) |
| 7 | 2000 { |
| 2001 for ( ; *p; ++p) | |
| 2002 if (rem_backslash(p)) | |
| 1621 | 2003 STRMOVE(p, p + 1); |
| 7 | 2004 } |
| 2005 | |
| 2006 /* | |
| 2007 * backslash_halve() plus save the result in allocated memory. | |
| 2008 */ | |
| 2009 char_u * | |
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2010 backslash_halve_save(char_u *p) |
| 7 | 2011 { |
| 2012 char_u *res; | |
| 2013 | |
| 2014 res = vim_strsave(p); | |
| 2015 if (res == NULL) | |
| 2016 return p; | |
| 2017 backslash_halve(res); | |
| 2018 return res; | |
| 2019 } | |
| 2020 | |
| 2021 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
| 2022 /* | |
| 2023 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
| 2024 * The first 64 entries have been added to map control characters defined in | |
| 2025 * ascii.h | |
| 2026 */ | |
| 2027 static char_u ebcdic2ascii_tab[256] = | |
| 2028 { | |
| 2029 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
| 2030 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
| 2031 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
| 2032 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
| 2033 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
| 2034 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
| 2035 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2036 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
| 2037 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
| 2038 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
| 2039 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
| 2040 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
| 2041 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
| 2042 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
| 2043 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
| 2044 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
| 2045 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
| 2046 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
| 2047 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
| 2048 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
| 2049 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
| 2050 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
| 2051 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
| 2052 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
| 2053 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
| 2054 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
| 2055 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
| 2056 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
| 2057 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
| 2058 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
| 2059 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2060 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
| 2061 }; | |
| 2062 | |
| 2063 /* | |
| 2064 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
| 2065 * wanting 7-bit ASCII characters out the other end. | |
| 2066 */ | |
| 2067 void | |
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2068 ebcdic2ascii(char_u *buffer, int len) |
| 7 | 2069 { |
| 2070 int i; | |
| 2071 | |
| 2072 for (i = 0; i < len; i++) | |
| 2073 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
| 2074 } | |
| 2075 #endif |