Mercurial > vim
annotate src/charset.c @ 2108:3cdf2a653e00 v7.2.391
updated for version 7.2.391
Problem: Internal alloc(0) error when doing "CTRL-V $ c". (Martti Kuparinen)
Solution: Fix computations in getvcol(). (partly by Lech Lorens)
| author | Bram Moolenaar <bram@zimbu.org> |
|---|---|
| date | Wed, 10 Mar 2010 14:46:26 +0100 |
| parents | fd24e02210c9 |
| children | 01e4b4d37842 |
| rev | line source |
|---|---|
| 7 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 2 * | |
| 3 * VIM - Vi IMproved by Bram Moolenaar | |
| 4 * | |
| 5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
| 6 * Do ":help credits" in Vim to see a list of people who contributed. | |
| 7 * See README.txt for an overview of the Vim source code. | |
| 8 */ | |
| 9 | |
| 10 #include "vim.h" | |
| 11 | |
| 12 #ifdef FEAT_LINEBREAK | |
| 13 static int win_chartabsize __ARGS((win_T *wp, char_u *p, colnr_T col)); | |
| 14 #endif | |
| 15 | |
| 16 #ifdef FEAT_MBYTE | |
| 17 static int win_nolbr_chartabsize __ARGS((win_T *wp, char_u *s, colnr_T col, int *headp)); | |
| 18 #endif | |
| 19 | |
| 1869 | 20 static unsigned nr2hex __ARGS((unsigned c)); |
| 7 | 21 |
| 22 static int chartab_initialized = FALSE; | |
| 23 | |
| 24 /* b_chartab[] is an array of 32 bytes, each bit representing one of the | |
| 25 * characters 0-255. */ | |
| 26 #define SET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] |= (1 << ((c) & 0x7)) | |
| 27 #define RESET_CHARTAB(buf, c) (buf)->b_chartab[(unsigned)(c) >> 3] &= ~(1 << ((c) & 0x7)) | |
| 28 #define GET_CHARTAB(buf, c) ((buf)->b_chartab[(unsigned)(c) >> 3] & (1 << ((c) & 0x7))) | |
| 29 | |
| 30 /* | |
| 31 * Fill chartab[]. Also fills curbuf->b_chartab[] with flags for keyword | |
| 32 * characters for current buffer. | |
| 33 * | |
| 34 * Depends on the option settings 'iskeyword', 'isident', 'isfname', | |
| 35 * 'isprint' and 'encoding'. | |
| 36 * | |
| 37 * The index in chartab[] depends on 'encoding': | |
| 38 * - For non-multi-byte index with the byte (same as the character). | |
| 39 * - For DBCS index with the first byte. | |
| 40 * - For UTF-8 index with the character (when first byte is up to 0x80 it is | |
| 41 * the same as the character, if the first byte is 0x80 and above it depends | |
| 42 * on further bytes). | |
| 43 * | |
| 44 * The contents of chartab[]: | |
| 45 * - The lower two bits, masked by CT_CELL_MASK, give the number of display | |
| 46 * cells the character occupies (1 or 2). Not valid for UTF-8 above 0x80. | |
| 47 * - CT_PRINT_CHAR bit is set when the character is printable (no need to | |
| 48 * translate the character before displaying it). Note that only DBCS | |
| 49 * characters can have 2 display cells and still be printable. | |
| 50 * - CT_FNAME_CHAR bit is set when the character can be in a file name. | |
| 51 * - CT_ID_CHAR bit is set when the character can be in an identifier. | |
| 52 * | |
| 53 * Return FAIL if 'iskeyword', 'isident', 'isfname' or 'isprint' option has an | |
| 54 * error, OK otherwise. | |
| 55 */ | |
| 56 int | |
| 57 init_chartab() | |
| 58 { | |
| 59 return buf_init_chartab(curbuf, TRUE); | |
| 60 } | |
| 61 | |
| 62 int | |
| 63 buf_init_chartab(buf, global) | |
| 64 buf_T *buf; | |
| 65 int global; /* FALSE: only set buf->b_chartab[] */ | |
| 66 { | |
| 67 int c; | |
| 68 int c2; | |
| 69 char_u *p; | |
| 70 int i; | |
| 71 int tilde; | |
| 72 int do_isalpha; | |
| 73 | |
| 74 if (global) | |
| 75 { | |
| 76 /* | |
| 77 * Set the default size for printable characters: | |
| 78 * From <Space> to '~' is 1 (printable), others are 2 (not printable). | |
| 79 * This also inits all 'isident' and 'isfname' flags to FALSE. | |
| 80 * | |
| 81 * EBCDIC: all chars below ' ' are not printable, all others are | |
| 82 * printable. | |
| 83 */ | |
| 84 c = 0; | |
| 85 while (c < ' ') | |
| 86 chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; | |
| 87 #ifdef EBCDIC | |
| 88 while (c < 255) | |
| 89 #else | |
| 90 while (c <= '~') | |
| 91 #endif | |
| 92 chartab[c++] = 1 + CT_PRINT_CHAR; | |
| 93 #ifdef FEAT_FKMAP | |
| 94 if (p_altkeymap) | |
| 95 { | |
| 96 while (c < YE) | |
| 97 chartab[c++] = 1 + CT_PRINT_CHAR; | |
| 98 } | |
| 99 #endif | |
| 100 while (c < 256) | |
| 101 { | |
| 102 #ifdef FEAT_MBYTE | |
| 103 /* UTF-8: bytes 0xa0 - 0xff are printable (latin1) */ | |
| 104 if (enc_utf8 && c >= 0xa0) | |
| 105 chartab[c++] = CT_PRINT_CHAR + 1; | |
| 106 /* euc-jp characters starting with 0x8e are single width */ | |
| 107 else if (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
| 108 chartab[c++] = CT_PRINT_CHAR + 1; | |
| 109 /* other double-byte chars can be printable AND double-width */ | |
| 110 else if (enc_dbcs != 0 && MB_BYTE2LEN(c) == 2) | |
| 111 chartab[c++] = CT_PRINT_CHAR + 2; | |
| 112 else | |
| 113 #endif | |
| 114 /* the rest is unprintable by default */ | |
| 115 chartab[c++] = (dy_flags & DY_UHEX) ? 4 : 2; | |
| 116 } | |
| 117 | |
| 118 #ifdef FEAT_MBYTE | |
| 119 /* Assume that every multi-byte char is a filename character. */ | |
| 120 for (c = 1; c < 256; ++c) | |
| 121 if ((enc_dbcs != 0 && MB_BYTE2LEN(c) > 1) | |
| 122 || (enc_dbcs == DBCS_JPNU && c == 0x8e) | |
| 123 || (enc_utf8 && c >= 0xa0)) | |
| 124 chartab[c] |= CT_FNAME_CHAR; | |
| 125 #endif | |
| 126 } | |
| 127 | |
| 128 /* | |
| 129 * Init word char flags all to FALSE | |
| 130 */ | |
| 131 vim_memset(buf->b_chartab, 0, (size_t)32); | |
| 132 #ifdef FEAT_MBYTE | |
| 227 | 133 if (enc_dbcs != 0) |
| 134 for (c = 0; c < 256; ++c) | |
| 135 { | |
| 136 /* double-byte characters are probably word characters */ | |
| 137 if (MB_BYTE2LEN(c) == 2) | |
| 138 SET_CHARTAB(buf, c); | |
| 139 } | |
| 7 | 140 #endif |
| 141 | |
| 142 #ifdef FEAT_LISP | |
| 143 /* | |
| 144 * In lisp mode the '-' character is included in keywords. | |
| 145 */ | |
| 146 if (buf->b_p_lisp) | |
| 147 SET_CHARTAB(buf, '-'); | |
| 148 #endif | |
| 149 | |
| 150 /* Walk through the 'isident', 'iskeyword', 'isfname' and 'isprint' | |
| 151 * options Each option is a list of characters, character numbers or | |
| 152 * ranges, separated by commas, e.g.: "200-210,x,#-178,-" | |
| 153 */ | |
| 154 for (i = global ? 0 : 3; i <= 3; ++i) | |
| 155 { | |
| 156 if (i == 0) | |
| 157 p = p_isi; /* first round: 'isident' */ | |
| 158 else if (i == 1) | |
| 159 p = p_isp; /* second round: 'isprint' */ | |
| 160 else if (i == 2) | |
| 161 p = p_isf; /* third round: 'isfname' */ | |
| 162 else /* i == 3 */ | |
| 163 p = buf->b_p_isk; /* fourth round: 'iskeyword' */ | |
| 164 | |
| 165 while (*p) | |
| 166 { | |
| 167 tilde = FALSE; | |
| 168 do_isalpha = FALSE; | |
| 169 if (*p == '^' && p[1] != NUL) | |
| 170 { | |
| 171 tilde = TRUE; | |
| 172 ++p; | |
| 173 } | |
| 174 if (VIM_ISDIGIT(*p)) | |
| 175 c = getdigits(&p); | |
| 176 else | |
| 1955 | 177 #ifdef FEAT_MBYTE |
| 178 if (has_mbyte) | |
| 179 c = mb_ptr2char_adv(&p); | |
| 180 else | |
| 181 #endif | |
| 7 | 182 c = *p++; |
| 183 c2 = -1; | |
| 184 if (*p == '-' && p[1] != NUL) | |
| 185 { | |
| 186 ++p; | |
| 187 if (VIM_ISDIGIT(*p)) | |
| 188 c2 = getdigits(&p); | |
| 189 else | |
| 1979 | 190 #ifdef FEAT_MBYTE |
| 191 if (has_mbyte) | |
| 192 c2 = mb_ptr2char_adv(&p); | |
| 193 else | |
| 194 #endif | |
| 7 | 195 c2 = *p++; |
| 196 } | |
| 1979 | 197 if (c <= 0 || c >= 256 || (c2 < c && c2 != -1) || c2 >= 256 |
| 7 | 198 || !(*p == NUL || *p == ',')) |
| 199 return FAIL; | |
| 200 | |
| 201 if (c2 == -1) /* not a range */ | |
| 202 { | |
| 203 /* | |
| 204 * A single '@' (not "@-@"): | |
| 205 * Decide on letters being ID/printable/keyword chars with | |
| 206 * standard function isalpha(). This takes care of locale for | |
| 207 * single-byte characters). | |
| 208 */ | |
| 209 if (c == '@') | |
| 210 { | |
| 211 do_isalpha = TRUE; | |
| 212 c = 1; | |
| 213 c2 = 255; | |
| 214 } | |
| 215 else | |
| 216 c2 = c; | |
| 217 } | |
| 218 while (c <= c2) | |
| 219 { | |
| 1365 | 220 /* Use the MB_ functions here, because isalpha() doesn't |
| 221 * work properly when 'encoding' is "latin1" and the locale is | |
| 222 * "C". */ | |
| 223 if (!do_isalpha || MB_ISLOWER(c) || MB_ISUPPER(c) | |
| 7 | 224 #ifdef FEAT_FKMAP |
| 225 || (p_altkeymap && (F_isalpha(c) || F_isdigit(c))) | |
| 226 #endif | |
| 227 ) | |
| 228 { | |
| 229 if (i == 0) /* (re)set ID flag */ | |
| 230 { | |
| 231 if (tilde) | |
| 232 chartab[c] &= ~CT_ID_CHAR; | |
| 233 else | |
| 234 chartab[c] |= CT_ID_CHAR; | |
| 235 } | |
| 236 else if (i == 1) /* (re)set printable */ | |
| 237 { | |
| 238 if ((c < ' ' | |
| 239 #ifndef EBCDIC | |
| 240 || c > '~' | |
| 241 #endif | |
| 242 #ifdef FEAT_FKMAP | |
| 243 || (p_altkeymap | |
| 244 && (F_isalpha(c) || F_isdigit(c))) | |
| 245 #endif | |
| 246 ) | |
| 247 #ifdef FEAT_MBYTE | |
| 248 /* For double-byte we keep the cell width, so | |
| 249 * that we can detect it from the first byte. */ | |
| 250 && !(enc_dbcs && MB_BYTE2LEN(c) == 2) | |
| 251 #endif | |
| 252 ) | |
| 253 { | |
| 254 if (tilde) | |
| 255 { | |
| 256 chartab[c] = (chartab[c] & ~CT_CELL_MASK) | |
| 257 + ((dy_flags & DY_UHEX) ? 4 : 2); | |
| 258 chartab[c] &= ~CT_PRINT_CHAR; | |
| 259 } | |
| 260 else | |
| 261 { | |
| 262 chartab[c] = (chartab[c] & ~CT_CELL_MASK) + 1; | |
| 263 chartab[c] |= CT_PRINT_CHAR; | |
| 264 } | |
| 265 } | |
| 266 } | |
| 267 else if (i == 2) /* (re)set fname flag */ | |
| 268 { | |
| 269 if (tilde) | |
| 270 chartab[c] &= ~CT_FNAME_CHAR; | |
| 271 else | |
| 272 chartab[c] |= CT_FNAME_CHAR; | |
| 273 } | |
| 274 else /* i == 3 */ /* (re)set keyword flag */ | |
| 275 { | |
| 276 if (tilde) | |
| 277 RESET_CHARTAB(buf, c); | |
| 278 else | |
| 279 SET_CHARTAB(buf, c); | |
| 280 } | |
| 281 } | |
| 282 ++c; | |
| 283 } | |
| 284 p = skip_to_option_part(p); | |
| 285 } | |
| 286 } | |
| 287 chartab_initialized = TRUE; | |
| 288 return OK; | |
| 289 } | |
| 290 | |
| 291 /* | |
| 292 * Translate any special characters in buf[bufsize] in-place. | |
| 293 * The result is a string with only printable characters, but if there is not | |
| 294 * enough room, not all characters will be translated. | |
| 295 */ | |
| 296 void | |
| 297 trans_characters(buf, bufsize) | |
| 298 char_u *buf; | |
| 299 int bufsize; | |
| 300 { | |
| 301 int len; /* length of string needing translation */ | |
| 302 int room; /* room in buffer after string */ | |
| 303 char_u *trs; /* translated character */ | |
| 304 int trs_len; /* length of trs[] */ | |
| 305 | |
| 306 len = (int)STRLEN(buf); | |
| 307 room = bufsize - len; | |
| 308 while (*buf != 0) | |
| 309 { | |
| 310 # ifdef FEAT_MBYTE | |
| 311 /* Assume a multi-byte character doesn't need translation. */ | |
| 474 | 312 if (has_mbyte && (trs_len = (*mb_ptr2len)(buf)) > 1) |
| 7 | 313 len -= trs_len; |
| 314 else | |
| 315 # endif | |
| 316 { | |
| 317 trs = transchar_byte(*buf); | |
| 318 trs_len = (int)STRLEN(trs); | |
| 319 if (trs_len > 1) | |
| 320 { | |
| 321 room -= trs_len - 1; | |
| 322 if (room <= 0) | |
| 323 return; | |
| 324 mch_memmove(buf + trs_len, buf + 1, (size_t)len); | |
| 325 } | |
| 326 mch_memmove(buf, trs, (size_t)trs_len); | |
| 327 --len; | |
| 328 } | |
| 329 buf += trs_len; | |
| 330 } | |
| 331 } | |
| 332 | |
| 1097 | 333 #if defined(FEAT_EVAL) || defined(FEAT_TITLE) || defined(FEAT_INS_EXPAND) \ |
| 334 || defined(PROTO) | |
| 7 | 335 /* |
| 336 * Translate a string into allocated memory, replacing special chars with | |
| 337 * printable chars. Returns NULL when out of memory. | |
| 338 */ | |
| 339 char_u * | |
| 340 transstr(s) | |
| 341 char_u *s; | |
| 342 { | |
| 343 char_u *res; | |
| 344 char_u *p; | |
| 345 #ifdef FEAT_MBYTE | |
| 346 int l, len, c; | |
| 347 char_u hexbuf[11]; | |
| 348 #endif | |
| 349 | |
| 350 #ifdef FEAT_MBYTE | |
| 351 if (has_mbyte) | |
| 352 { | |
| 353 /* Compute the length of the result, taking account of unprintable | |
| 354 * multi-byte characters. */ | |
| 355 len = 0; | |
| 356 p = s; | |
| 357 while (*p != NUL) | |
| 358 { | |
| 474 | 359 if ((l = (*mb_ptr2len)(p)) > 1) |
| 7 | 360 { |
| 361 c = (*mb_ptr2char)(p); | |
| 362 p += l; | |
| 363 if (vim_isprintc(c)) | |
| 364 len += l; | |
| 365 else | |
| 366 { | |
| 367 transchar_hex(hexbuf, c); | |
| 835 | 368 len += (int)STRLEN(hexbuf); |
| 7 | 369 } |
| 370 } | |
| 371 else | |
| 372 { | |
| 373 l = byte2cells(*p++); | |
| 374 if (l > 0) | |
| 375 len += l; | |
| 376 else | |
| 377 len += 4; /* illegal byte sequence */ | |
| 378 } | |
| 379 } | |
| 380 res = alloc((unsigned)(len + 1)); | |
| 381 } | |
| 382 else | |
| 383 #endif | |
| 384 res = alloc((unsigned)(vim_strsize(s) + 1)); | |
| 385 if (res != NULL) | |
| 386 { | |
| 387 *res = NUL; | |
| 388 p = s; | |
| 389 while (*p != NUL) | |
| 390 { | |
| 391 #ifdef FEAT_MBYTE | |
| 474 | 392 if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) |
| 7 | 393 { |
| 394 c = (*mb_ptr2char)(p); | |
| 395 if (vim_isprintc(c)) | |
| 396 STRNCAT(res, p, l); /* append printable multi-byte char */ | |
| 397 else | |
| 398 transchar_hex(res + STRLEN(res), c); | |
| 399 p += l; | |
| 400 } | |
| 401 else | |
| 402 #endif | |
| 403 STRCAT(res, transchar_byte(*p++)); | |
| 404 } | |
| 405 } | |
| 406 return res; | |
| 407 } | |
| 408 #endif | |
| 409 | |
| 410 #if defined(FEAT_SYN_HL) || defined(FEAT_INS_EXPAND) || defined(PROTO) | |
| 411 /* | |
| 221 | 412 * Convert the string "str[orglen]" to do ignore-case comparing. Uses the |
| 413 * current locale. | |
| 130 | 414 * When "buf" is NULL returns an allocated string (NULL for out-of-memory). |
| 415 * Otherwise puts the result in "buf[buflen]". | |
| 7 | 416 */ |
| 417 char_u * | |
| 130 | 418 str_foldcase(str, orglen, buf, buflen) |
| 7 | 419 char_u *str; |
| 130 | 420 int orglen; |
| 421 char_u *buf; | |
| 422 int buflen; | |
| 7 | 423 { |
| 424 garray_T ga; | |
| 425 int i; | |
| 130 | 426 int len = orglen; |
| 7 | 427 |
| 428 #define GA_CHAR(i) ((char_u *)ga.ga_data)[i] | |
| 429 #define GA_PTR(i) ((char_u *)ga.ga_data + i) | |
| 130 | 430 #define STR_CHAR(i) (buf == NULL ? GA_CHAR(i) : buf[i]) |
| 431 #define STR_PTR(i) (buf == NULL ? GA_PTR(i) : buf + i) | |
| 7 | 432 |
| 130 | 433 /* Copy "str" into "buf" or allocated memory, unmodified. */ |
| 434 if (buf == NULL) | |
| 435 { | |
| 436 ga_init2(&ga, 1, 10); | |
| 437 if (ga_grow(&ga, len + 1) == FAIL) | |
| 438 return NULL; | |
| 439 mch_memmove(ga.ga_data, str, (size_t)len); | |
| 440 ga.ga_len = len; | |
| 441 } | |
| 442 else | |
| 443 { | |
| 444 if (len >= buflen) /* Ugly! */ | |
| 445 len = buflen - 1; | |
| 446 mch_memmove(buf, str, (size_t)len); | |
| 447 } | |
| 448 if (buf == NULL) | |
| 449 GA_CHAR(len) = NUL; | |
| 450 else | |
| 451 buf[len] = NUL; | |
| 7 | 452 |
| 453 /* Make each character lower case. */ | |
| 454 i = 0; | |
| 130 | 455 while (STR_CHAR(i) != NUL) |
| 7 | 456 { |
| 457 #ifdef FEAT_MBYTE | |
| 130 | 458 if (enc_utf8 || (has_mbyte && MB_BYTE2LEN(STR_CHAR(i)) > 1)) |
| 7 | 459 { |
| 460 if (enc_utf8) | |
| 461 { | |
| 1654 | 462 int c = utf_ptr2char(STR_PTR(i)); |
| 463 int ol = utf_ptr2len(STR_PTR(i)); | |
| 464 int lc = utf_tolower(c); | |
| 7 | 465 |
| 1654 | 466 /* Only replace the character when it is not an invalid |
| 467 * sequence (ASCII character or more than one byte) and | |
| 468 * utf_tolower() doesn't return the original character. */ | |
| 469 if ((c < 0x80 || ol > 1) && c != lc) | |
| 7 | 470 { |
| 471 int nl = utf_char2len(lc); | |
| 472 | |
| 473 /* If the byte length changes need to shift the following | |
| 474 * characters forward or backward. */ | |
| 475 if (ol != nl) | |
| 476 { | |
| 477 if (nl > ol) | |
| 130 | 478 { |
| 479 if (buf == NULL ? ga_grow(&ga, nl - ol + 1) == FAIL | |
| 480 : len + nl - ol >= buflen) | |
| 7 | 481 { |
| 482 /* out of memory, keep old char */ | |
| 483 lc = c; | |
| 484 nl = ol; | |
| 485 } | |
| 130 | 486 } |
| 7 | 487 if (ol != nl) |
| 488 { | |
| 130 | 489 if (buf == NULL) |
| 490 { | |
| 1621 | 491 STRMOVE(GA_PTR(i) + nl, GA_PTR(i) + ol); |
| 130 | 492 ga.ga_len += nl - ol; |
| 493 } | |
| 494 else | |
| 495 { | |
| 1621 | 496 STRMOVE(buf + i + nl, buf + i + ol); |
| 130 | 497 len += nl - ol; |
| 498 } | |
| 7 | 499 } |
| 500 } | |
| 130 | 501 (void)utf_char2bytes(lc, STR_PTR(i)); |
| 7 | 502 } |
| 503 } | |
| 504 /* skip to next multi-byte char */ | |
| 474 | 505 i += (*mb_ptr2len)(STR_PTR(i)); |
| 7 | 506 } |
| 507 else | |
| 508 #endif | |
| 509 { | |
| 130 | 510 if (buf == NULL) |
| 511 GA_CHAR(i) = TOLOWER_LOC(GA_CHAR(i)); | |
| 512 else | |
| 513 buf[i] = TOLOWER_LOC(buf[i]); | |
| 7 | 514 ++i; |
| 515 } | |
| 516 } | |
| 517 | |
| 130 | 518 if (buf == NULL) |
| 519 return (char_u *)ga.ga_data; | |
| 520 return buf; | |
| 7 | 521 } |
| 522 #endif | |
| 523 | |
| 524 /* | |
| 525 * Catch 22: chartab[] can't be initialized before the options are | |
| 526 * initialized, and initializing options may cause transchar() to be called! | |
| 527 * When chartab_initialized == FALSE don't use chartab[]. | |
| 528 * Does NOT work for multi-byte characters, c must be <= 255. | |
| 529 * Also doesn't work for the first byte of a multi-byte, "c" must be a | |
| 530 * character! | |
| 531 */ | |
| 532 static char_u transchar_buf[7]; | |
| 533 | |
| 534 char_u * | |
| 535 transchar(c) | |
| 536 int c; | |
| 537 { | |
| 538 int i; | |
| 539 | |
| 540 i = 0; | |
| 541 if (IS_SPECIAL(c)) /* special key code, display as ~@ char */ | |
| 542 { | |
| 543 transchar_buf[0] = '~'; | |
| 544 transchar_buf[1] = '@'; | |
| 545 i = 2; | |
| 546 c = K_SECOND(c); | |
| 547 } | |
| 548 | |
| 549 if ((!chartab_initialized && ( | |
| 550 #ifdef EBCDIC | |
| 551 (c >= 64 && c < 255) | |
| 552 #else | |
| 553 (c >= ' ' && c <= '~') | |
| 554 #endif | |
| 555 #ifdef FEAT_FKMAP | |
| 556 || F_ischar(c) | |
| 557 #endif | |
| 558 )) || (c < 256 && vim_isprintc_strict(c))) | |
| 559 { | |
| 560 /* printable character */ | |
| 561 transchar_buf[i] = c; | |
| 562 transchar_buf[i + 1] = NUL; | |
| 563 } | |
| 564 else | |
| 565 transchar_nonprint(transchar_buf + i, c); | |
| 566 return transchar_buf; | |
| 567 } | |
| 568 | |
| 569 #if defined(FEAT_MBYTE) || defined(PROTO) | |
| 570 /* | |
| 571 * Like transchar(), but called with a byte instead of a character. Checks | |
| 572 * for an illegal UTF-8 byte. | |
| 573 */ | |
| 574 char_u * | |
| 575 transchar_byte(c) | |
| 576 int c; | |
| 577 { | |
| 578 if (enc_utf8 && c >= 0x80) | |
| 579 { | |
| 580 transchar_nonprint(transchar_buf, c); | |
| 581 return transchar_buf; | |
| 582 } | |
| 583 return transchar(c); | |
| 584 } | |
| 585 #endif | |
| 586 | |
| 587 /* | |
| 588 * Convert non-printable character to two or more printable characters in | |
| 589 * "buf[]". "buf" needs to be able to hold five bytes. | |
| 590 * Does NOT work for multi-byte characters, c must be <= 255. | |
| 591 */ | |
| 592 void | |
| 593 transchar_nonprint(buf, c) | |
| 594 char_u *buf; | |
| 595 int c; | |
| 596 { | |
| 597 if (c == NL) | |
| 598 c = NUL; /* we use newline in place of a NUL */ | |
| 599 else if (c == CAR && get_fileformat(curbuf) == EOL_MAC) | |
| 600 c = NL; /* we use CR in place of NL in this case */ | |
| 601 | |
| 602 if (dy_flags & DY_UHEX) /* 'display' has "uhex" */ | |
| 603 transchar_hex(buf, c); | |
| 604 | |
| 605 #ifdef EBCDIC | |
| 606 /* For EBCDIC only the characters 0-63 and 255 are not printable */ | |
| 607 else if (CtrlChar(c) != 0 || c == DEL) | |
| 608 #else | |
| 609 else if (c <= 0x7f) /* 0x00 - 0x1f and 0x7f */ | |
| 610 #endif | |
| 611 { | |
| 612 buf[0] = '^'; | |
| 613 #ifdef EBCDIC | |
| 614 if (c == DEL) | |
| 615 buf[1] = '?'; /* DEL displayed as ^? */ | |
| 616 else | |
| 617 buf[1] = CtrlChar(c); | |
| 618 #else | |
| 619 buf[1] = c ^ 0x40; /* DEL displayed as ^? */ | |
| 620 #endif | |
| 621 | |
| 622 buf[2] = NUL; | |
| 623 } | |
| 624 #ifdef FEAT_MBYTE | |
| 625 else if (enc_utf8 && c >= 0x80) | |
| 626 { | |
| 627 transchar_hex(buf, c); | |
| 628 } | |
| 629 #endif | |
| 630 #ifndef EBCDIC | |
| 631 else if (c >= ' ' + 0x80 && c <= '~' + 0x80) /* 0xa0 - 0xfe */ | |
| 632 { | |
| 633 buf[0] = '|'; | |
| 634 buf[1] = c - 0x80; | |
| 635 buf[2] = NUL; | |
| 636 } | |
| 637 #else | |
| 638 else if (c < 64) | |
| 639 { | |
| 640 buf[0] = '~'; | |
| 641 buf[1] = MetaChar(c); | |
| 642 buf[2] = NUL; | |
| 643 } | |
| 644 #endif | |
| 645 else /* 0x80 - 0x9f and 0xff */ | |
| 646 { | |
| 647 /* | |
| 648 * TODO: EBCDIC I don't know what to do with this chars, so I display | |
| 649 * them as '~?' for now | |
| 650 */ | |
| 651 buf[0] = '~'; | |
| 652 #ifdef EBCDIC | |
| 653 buf[1] = '?'; /* 0xff displayed as ~? */ | |
| 654 #else | |
| 655 buf[1] = (c - 0x80) ^ 0x40; /* 0xff displayed as ~? */ | |
| 656 #endif | |
| 657 buf[2] = NUL; | |
| 658 } | |
| 659 } | |
| 660 | |
| 661 void | |
| 662 transchar_hex(buf, c) | |
| 663 char_u *buf; | |
| 664 int c; | |
| 665 { | |
| 666 int i = 0; | |
| 667 | |
| 668 buf[0] = '<'; | |
| 669 #ifdef FEAT_MBYTE | |
| 670 if (c > 255) | |
| 671 { | |
| 672 buf[++i] = nr2hex((unsigned)c >> 12); | |
| 673 buf[++i] = nr2hex((unsigned)c >> 8); | |
| 674 } | |
| 675 #endif | |
| 676 buf[++i] = nr2hex((unsigned)c >> 4); | |
| 1869 | 677 buf[++i] = nr2hex((unsigned)c); |
| 7 | 678 buf[++i] = '>'; |
| 679 buf[++i] = NUL; | |
| 680 } | |
| 681 | |
| 682 /* | |
| 683 * Convert the lower 4 bits of byte "c" to its hex character. | |
| 684 * Lower case letters are used to avoid the confusion of <F1> being 0xf1 or | |
| 685 * function key 1. | |
| 686 */ | |
| 1869 | 687 static unsigned |
| 7 | 688 nr2hex(c) |
| 1869 | 689 unsigned c; |
| 7 | 690 { |
| 691 if ((c & 0xf) <= 9) | |
| 692 return (c & 0xf) + '0'; | |
| 693 return (c & 0xf) - 10 + 'a'; | |
| 694 } | |
| 695 | |
| 696 /* | |
| 697 * Return number of display cells occupied by byte "b". | |
| 698 * Caller must make sure 0 <= b <= 255. | |
| 699 * For multi-byte mode "b" must be the first byte of a character. | |
| 700 * A TAB is counted as two cells: "^I". | |
| 701 * For UTF-8 mode this will return 0 for bytes >= 0x80, because the number of | |
| 702 * cells depends on further bytes. | |
| 703 */ | |
| 704 int | |
| 705 byte2cells(b) | |
| 706 int b; | |
| 707 { | |
| 708 #ifdef FEAT_MBYTE | |
| 709 if (enc_utf8 && b >= 0x80) | |
| 710 return 0; | |
| 711 #endif | |
| 712 return (chartab[b] & CT_CELL_MASK); | |
| 713 } | |
| 714 | |
| 715 /* | |
| 716 * Return number of display cells occupied by character "c". | |
| 717 * "c" can be a special key (negative number) in which case 3 or 4 is returned. | |
| 718 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 719 */ | |
| 720 int | |
| 721 char2cells(c) | |
| 722 int c; | |
| 723 { | |
| 724 if (IS_SPECIAL(c)) | |
| 725 return char2cells(K_SECOND(c)) + 2; | |
| 726 #ifdef FEAT_MBYTE | |
| 727 if (c >= 0x80) | |
| 728 { | |
| 729 /* UTF-8: above 0x80 need to check the value */ | |
| 730 if (enc_utf8) | |
| 731 return utf_char2cells(c); | |
| 732 /* DBCS: double-byte means double-width, except for euc-jp with first | |
| 733 * byte 0x8e */ | |
| 734 if (enc_dbcs != 0 && c >= 0x100) | |
| 735 { | |
| 736 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) | |
| 737 return 1; | |
| 738 return 2; | |
| 739 } | |
| 740 } | |
| 741 #endif | |
| 742 return (chartab[c & 0xff] & CT_CELL_MASK); | |
| 743 } | |
| 744 | |
| 745 /* | |
| 746 * Return number of display cells occupied by character at "*p". | |
| 747 * A TAB is counted as two cells: "^I" or four: "<09>". | |
| 748 */ | |
| 749 int | |
| 750 ptr2cells(p) | |
| 751 char_u *p; | |
| 752 { | |
| 753 #ifdef FEAT_MBYTE | |
| 754 /* For UTF-8 we need to look at more bytes if the first byte is >= 0x80. */ | |
| 755 if (enc_utf8 && *p >= 0x80) | |
| 756 return utf_ptr2cells(p); | |
| 757 /* For DBCS we can tell the cell count from the first byte. */ | |
| 758 #endif | |
| 759 return (chartab[*p] & CT_CELL_MASK); | |
| 760 } | |
| 761 | |
| 762 /* | |
| 763 * Return the number of characters string "s" will take on the screen, | |
| 764 * counting TABs as two characters: "^I". | |
| 765 */ | |
| 766 int | |
| 767 vim_strsize(s) | |
| 768 char_u *s; | |
| 769 { | |
| 770 return vim_strnsize(s, (int)MAXCOL); | |
| 771 } | |
| 772 | |
| 773 /* | |
| 774 * Return the number of characters string "s[len]" will take on the screen, | |
| 775 * counting TABs as two characters: "^I". | |
| 776 */ | |
| 777 int | |
| 778 vim_strnsize(s, len) | |
| 779 char_u *s; | |
| 780 int len; | |
| 781 { | |
| 782 int size = 0; | |
| 783 | |
| 784 while (*s != NUL && --len >= 0) | |
| 785 { | |
| 786 #ifdef FEAT_MBYTE | |
| 787 if (has_mbyte) | |
| 788 { | |
| 474 | 789 int l = (*mb_ptr2len)(s); |
| 7 | 790 |
| 791 size += ptr2cells(s); | |
| 792 s += l; | |
| 793 len -= l - 1; | |
| 794 } | |
| 795 else | |
| 796 #endif | |
| 797 size += byte2cells(*s++); | |
| 798 } | |
| 799 return size; | |
| 800 } | |
| 801 | |
| 802 /* | |
| 803 * Return the number of characters 'c' will take on the screen, taking | |
| 804 * into account the size of a tab. | |
| 805 * Use a define to make it fast, this is used very often!!! | |
| 806 * Also see getvcol() below. | |
| 807 */ | |
| 808 | |
| 809 #define RET_WIN_BUF_CHARTABSIZE(wp, buf, p, col) \ | |
| 810 if (*(p) == TAB && (!(wp)->w_p_list || lcs_tab1)) \ | |
| 811 { \ | |
| 812 int ts; \ | |
| 813 ts = (buf)->b_p_ts; \ | |
| 814 return (int)(ts - (col % ts)); \ | |
| 815 } \ | |
| 816 else \ | |
| 817 return ptr2cells(p); | |
| 818 | |
| 819 #if defined(FEAT_VREPLACE) || defined(FEAT_EX_EXTRA) || defined(FEAT_GUI) \ | |
| 820 || defined(FEAT_VIRTUALEDIT) || defined(PROTO) | |
| 821 int | |
| 822 chartabsize(p, col) | |
| 823 char_u *p; | |
| 824 colnr_T col; | |
| 825 { | |
| 826 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, p, col) | |
| 827 } | |
| 828 #endif | |
| 829 | |
| 830 #ifdef FEAT_LINEBREAK | |
| 831 static int | |
| 832 win_chartabsize(wp, p, col) | |
| 833 win_T *wp; | |
| 834 char_u *p; | |
| 835 colnr_T col; | |
| 836 { | |
| 837 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, p, col) | |
| 838 } | |
| 839 #endif | |
| 840 | |
| 841 /* | |
| 842 * return the number of characters the string 's' will take on the screen, | |
| 843 * taking into account the size of a tab | |
| 844 */ | |
| 845 int | |
| 846 linetabsize(s) | |
| 847 char_u *s; | |
| 848 { | |
| 849 colnr_T col = 0; | |
| 850 | |
| 851 while (*s != NUL) | |
| 852 col += lbr_chartabsize_adv(&s, col); | |
| 853 return (int)col; | |
| 854 } | |
| 855 | |
| 856 /* | |
| 857 * Like linetabsize(), but for a given window instead of the current one. | |
| 858 */ | |
| 859 int | |
| 860 win_linetabsize(wp, p, len) | |
| 861 win_T *wp; | |
| 862 char_u *p; | |
| 863 colnr_T len; | |
| 864 { | |
| 865 colnr_T col = 0; | |
| 866 char_u *s; | |
| 867 | |
| 40 | 868 for (s = p; *s != NUL && (len == MAXCOL || s < p + len); mb_ptr_adv(s)) |
| 7 | 869 col += win_lbr_chartabsize(wp, s, col, NULL); |
| 870 return (int)col; | |
| 871 } | |
| 872 | |
| 873 /* | |
| 42 | 874 * Return TRUE if 'c' is a normal identifier character: |
| 875 * Letters and characters from the 'isident' option. | |
| 7 | 876 */ |
| 877 int | |
| 878 vim_isIDc(c) | |
| 879 int c; | |
| 880 { | |
| 881 return (c > 0 && c < 0x100 && (chartab[c] & CT_ID_CHAR)); | |
| 882 } | |
| 883 | |
| 884 /* | |
| 885 * return TRUE if 'c' is a keyword character: Letters and characters from | |
| 886 * 'iskeyword' option for current buffer. | |
| 887 * For multi-byte characters mb_get_class() is used (builtin rules). | |
| 888 */ | |
| 889 int | |
| 890 vim_iswordc(c) | |
| 891 int c; | |
| 892 { | |
| 893 #ifdef FEAT_MBYTE | |
| 894 if (c >= 0x100) | |
| 895 { | |
| 896 if (enc_dbcs != 0) | |
| 1869 | 897 return dbcs_class((unsigned)c >> 8, (unsigned)(c & 0xff)) >= 2; |
| 7 | 898 if (enc_utf8) |
| 899 return utf_class(c) >= 2; | |
| 900 } | |
| 901 #endif | |
| 902 return (c > 0 && c < 0x100 && GET_CHARTAB(curbuf, c) != 0); | |
| 903 } | |
| 904 | |
| 905 /* | |
| 906 * Just like vim_iswordc() but uses a pointer to the (multi-byte) character. | |
| 907 */ | |
| 908 int | |
| 909 vim_iswordp(p) | |
| 910 char_u *p; | |
| 911 { | |
| 912 #ifdef FEAT_MBYTE | |
| 913 if (has_mbyte && MB_BYTE2LEN(*p) > 1) | |
| 914 return mb_get_class(p) >= 2; | |
| 915 #endif | |
| 916 return GET_CHARTAB(curbuf, *p) != 0; | |
| 917 } | |
| 918 | |
| 919 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 920 int | |
| 921 vim_iswordc_buf(p, buf) | |
| 922 char_u *p; | |
| 923 buf_T *buf; | |
| 924 { | |
| 925 # ifdef FEAT_MBYTE | |
| 926 if (has_mbyte && MB_BYTE2LEN(*p) > 1) | |
| 927 return mb_get_class(p) >= 2; | |
| 928 # endif | |
| 929 return (GET_CHARTAB(buf, *p) != 0); | |
| 930 } | |
| 741 | 931 #endif |
| 7 | 932 |
| 933 /* | |
| 934 * return TRUE if 'c' is a valid file-name character | |
| 935 * Assume characters above 0x100 are valid (multi-byte). | |
| 936 */ | |
| 937 int | |
| 938 vim_isfilec(c) | |
| 939 int c; | |
| 940 { | |
| 941 return (c >= 0x100 || (c > 0 && (chartab[c] & CT_FNAME_CHAR))); | |
| 942 } | |
| 943 | |
| 944 /* | |
| 1369 | 945 * return TRUE if 'c' is a valid file-name character or a wildcard character |
| 946 * Assume characters above 0x100 are valid (multi-byte). | |
| 947 * Explicitly interpret ']' as a wildcard character as mch_has_wildcard("]") | |
| 948 * returns false. | |
| 949 */ | |
| 950 int | |
| 951 vim_isfilec_or_wc(c) | |
| 952 int c; | |
| 953 { | |
| 954 char_u buf[2]; | |
| 955 | |
| 956 buf[0] = (char_u)c; | |
| 957 buf[1] = NUL; | |
| 958 return vim_isfilec(c) || c == ']' || mch_has_wildcard(buf); | |
| 959 } | |
| 960 | |
| 961 /* | |
| 7 | 962 * return TRUE if 'c' is a printable character |
| 963 * Assume characters above 0x100 are printable (multi-byte), except for | |
| 964 * Unicode. | |
| 965 */ | |
| 966 int | |
| 967 vim_isprintc(c) | |
| 968 int c; | |
| 969 { | |
| 970 #ifdef FEAT_MBYTE | |
| 971 if (enc_utf8 && c >= 0x100) | |
| 972 return utf_printable(c); | |
| 973 #endif | |
| 974 return (c >= 0x100 || (c > 0 && (chartab[c] & CT_PRINT_CHAR))); | |
| 975 } | |
| 976 | |
| 977 /* | |
| 978 * Strict version of vim_isprintc(c), don't return TRUE if "c" is the head | |
| 979 * byte of a double-byte character. | |
| 980 */ | |
| 981 int | |
| 982 vim_isprintc_strict(c) | |
| 983 int c; | |
| 984 { | |
| 985 #ifdef FEAT_MBYTE | |
| 986 if (enc_dbcs != 0 && c < 0x100 && MB_BYTE2LEN(c) > 1) | |
| 987 return FALSE; | |
| 988 if (enc_utf8 && c >= 0x100) | |
| 989 return utf_printable(c); | |
| 990 #endif | |
| 991 return (c >= 0x100 || (c > 0 && (chartab[c] & CT_PRINT_CHAR))); | |
| 992 } | |
| 993 | |
| 994 /* | |
| 995 * like chartabsize(), but also check for line breaks on the screen | |
| 996 */ | |
| 997 int | |
| 998 lbr_chartabsize(s, col) | |
| 999 unsigned char *s; | |
| 1000 colnr_T col; | |
| 1001 { | |
| 1002 #ifdef FEAT_LINEBREAK | |
| 1003 if (!curwin->w_p_lbr && *p_sbr == NUL) | |
| 1004 { | |
| 1005 #endif | |
| 1006 #ifdef FEAT_MBYTE | |
| 1007 if (curwin->w_p_wrap) | |
| 1008 return win_nolbr_chartabsize(curwin, s, col, NULL); | |
| 1009 #endif | |
| 1010 RET_WIN_BUF_CHARTABSIZE(curwin, curbuf, s, col) | |
| 1011 #ifdef FEAT_LINEBREAK | |
| 1012 } | |
| 1013 return win_lbr_chartabsize(curwin, s, col, NULL); | |
| 1014 #endif | |
| 1015 } | |
| 1016 | |
| 1017 /* | |
| 1018 * Call lbr_chartabsize() and advance the pointer. | |
| 1019 */ | |
| 1020 int | |
| 1021 lbr_chartabsize_adv(s, col) | |
| 1022 char_u **s; | |
| 1023 colnr_T col; | |
| 1024 { | |
| 1025 int retval; | |
| 1026 | |
| 1027 retval = lbr_chartabsize(*s, col); | |
| 39 | 1028 mb_ptr_adv(*s); |
| 7 | 1029 return retval; |
| 1030 } | |
| 1031 | |
| 1032 /* | |
| 1033 * This function is used very often, keep it fast!!!! | |
| 1034 * | |
| 1035 * If "headp" not NULL, set *headp to the size of what we for 'showbreak' | |
| 1036 * string at start of line. Warning: *headp is only set if it's a non-zero | |
| 1037 * value, init to 0 before calling. | |
| 1038 */ | |
| 1039 int | |
| 1040 win_lbr_chartabsize(wp, s, col, headp) | |
| 1041 win_T *wp; | |
| 1042 char_u *s; | |
| 1043 colnr_T col; | |
| 1876 | 1044 int *headp UNUSED; |
| 7 | 1045 { |
| 1046 #ifdef FEAT_LINEBREAK | |
| 1047 int c; | |
| 1048 int size; | |
| 1049 colnr_T col2; | |
| 1050 colnr_T colmax; | |
| 1051 int added; | |
| 1052 # ifdef FEAT_MBYTE | |
| 1053 int mb_added = 0; | |
| 1054 # else | |
| 1055 # define mb_added 0 | |
| 1056 # endif | |
| 1057 int numberextra; | |
| 1058 char_u *ps; | |
| 1059 int tab_corr = (*s == TAB); | |
| 236 | 1060 int n; |
| 7 | 1061 |
| 1062 /* | |
| 1063 * No 'linebreak' and 'showbreak': return quickly. | |
| 1064 */ | |
| 1065 if (!wp->w_p_lbr && *p_sbr == NUL) | |
| 1066 #endif | |
| 1067 { | |
| 1068 #ifdef FEAT_MBYTE | |
| 1069 if (wp->w_p_wrap) | |
| 1070 return win_nolbr_chartabsize(wp, s, col, headp); | |
| 1071 #endif | |
| 1072 RET_WIN_BUF_CHARTABSIZE(wp, wp->w_buffer, s, col) | |
| 1073 } | |
| 1074 | |
| 1075 #ifdef FEAT_LINEBREAK | |
| 1076 /* | |
| 1077 * First get normal size, without 'linebreak' | |
| 1078 */ | |
| 1079 size = win_chartabsize(wp, s, col); | |
| 1080 c = *s; | |
| 1081 | |
| 1082 /* | |
| 1083 * If 'linebreak' set check at a blank before a non-blank if the line | |
| 1084 * needs a break here | |
| 1085 */ | |
| 1086 if (wp->w_p_lbr | |
| 1087 && vim_isbreak(c) | |
| 1088 && !vim_isbreak(s[1]) | |
| 1089 && !wp->w_p_list | |
| 1090 && wp->w_p_wrap | |
| 1091 # ifdef FEAT_VERTSPLIT | |
| 1092 && wp->w_width != 0 | |
| 1093 # endif | |
| 1094 ) | |
| 1095 { | |
| 1096 /* | |
| 1097 * Count all characters from first non-blank after a blank up to next | |
| 1098 * non-blank after a blank. | |
| 1099 */ | |
| 1100 numberextra = win_col_off(wp); | |
| 1101 col2 = col; | |
| 1869 | 1102 colmax = (colnr_T)(W_WIDTH(wp) - numberextra); |
| 7 | 1103 if (col >= colmax) |
| 236 | 1104 { |
| 1105 n = colmax + win_col_off2(wp); | |
| 1106 if (n > 0) | |
| 1107 colmax += (((col - colmax) / n) + 1) * n; | |
| 1108 } | |
| 1109 | |
| 7 | 1110 for (;;) |
| 1111 { | |
| 1112 ps = s; | |
| 39 | 1113 mb_ptr_adv(s); |
| 7 | 1114 c = *s; |
| 1115 if (!(c != NUL | |
| 1116 && (vim_isbreak(c) | |
| 1117 || (!vim_isbreak(c) | |
| 1118 && (col2 == col || !vim_isbreak(*ps)))))) | |
| 1119 break; | |
| 1120 | |
| 1121 col2 += win_chartabsize(wp, s, col2); | |
| 1122 if (col2 >= colmax) /* doesn't fit */ | |
| 1123 { | |
| 1124 size = colmax - col; | |
| 1125 tab_corr = FALSE; | |
| 1126 break; | |
| 1127 } | |
| 1128 } | |
| 1129 } | |
| 1130 # ifdef FEAT_MBYTE | |
| 1131 else if (has_mbyte && size == 2 && MB_BYTE2LEN(*s) > 1 | |
| 1132 && wp->w_p_wrap && in_win_border(wp, col)) | |
| 1133 { | |
| 1134 ++size; /* Count the ">" in the last column. */ | |
| 1135 mb_added = 1; | |
| 1136 } | |
| 1137 # endif | |
| 1138 | |
| 1139 /* | |
| 1140 * May have to add something for 'showbreak' string at start of line | |
| 1141 * Set *headp to the size of what we add. | |
| 1142 */ | |
| 1143 added = 0; | |
| 1144 if (*p_sbr != NUL && wp->w_p_wrap && col != 0) | |
| 1145 { | |
| 1146 numberextra = win_col_off(wp); | |
| 1147 col += numberextra + mb_added; | |
| 1148 if (col >= (colnr_T)W_WIDTH(wp)) | |
| 1149 { | |
| 1150 col -= W_WIDTH(wp); | |
| 1151 numberextra = W_WIDTH(wp) - (numberextra - win_col_off2(wp)); | |
| 1152 if (numberextra > 0) | |
| 1153 col = col % numberextra; | |
| 1154 } | |
| 1155 if (col == 0 || col + size > (colnr_T)W_WIDTH(wp)) | |
| 1156 { | |
| 1157 added = vim_strsize(p_sbr); | |
| 1158 if (tab_corr) | |
| 1159 size += (added / wp->w_buffer->b_p_ts) * wp->w_buffer->b_p_ts; | |
| 1160 else | |
| 1161 size += added; | |
| 1162 if (col != 0) | |
| 1163 added = 0; | |
| 1164 } | |
| 1165 } | |
| 1166 if (headp != NULL) | |
| 1167 *headp = added + mb_added; | |
| 1168 return size; | |
| 1169 #endif | |
| 1170 } | |
| 1171 | |
| 1172 #if defined(FEAT_MBYTE) || defined(PROTO) | |
| 1173 /* | |
| 1174 * Like win_lbr_chartabsize(), except that we know 'linebreak' is off and | |
| 1175 * 'wrap' is on. This means we need to check for a double-byte character that | |
| 1176 * doesn't fit at the end of the screen line. | |
| 1177 */ | |
| 1178 static int | |
| 1179 win_nolbr_chartabsize(wp, s, col, headp) | |
| 1180 win_T *wp; | |
| 1181 char_u *s; | |
| 1182 colnr_T col; | |
| 1183 int *headp; | |
| 1184 { | |
| 1185 int n; | |
| 1186 | |
| 1187 if (*s == TAB && (!wp->w_p_list || lcs_tab1)) | |
| 1188 { | |
| 1189 n = wp->w_buffer->b_p_ts; | |
| 1190 return (int)(n - (col % n)); | |
| 1191 } | |
| 1192 n = ptr2cells(s); | |
| 1193 /* Add one cell for a double-width character in the last column of the | |
| 1194 * window, displayed with a ">". */ | |
| 1195 if (n == 2 && MB_BYTE2LEN(*s) > 1 && in_win_border(wp, col)) | |
| 1196 { | |
| 1197 if (headp != NULL) | |
| 1198 *headp = 1; | |
| 1199 return 3; | |
| 1200 } | |
| 1201 return n; | |
| 1202 } | |
| 1203 | |
| 1204 /* | |
| 1205 * Return TRUE if virtual column "vcol" is in the rightmost column of window | |
| 1206 * "wp". | |
| 1207 */ | |
| 1208 int | |
| 1209 in_win_border(wp, vcol) | |
| 1210 win_T *wp; | |
| 1211 colnr_T vcol; | |
| 1212 { | |
| 1869 | 1213 int width1; /* width of first line (after line number) */ |
| 1214 int width2; /* width of further lines */ | |
| 7 | 1215 |
| 1216 #ifdef FEAT_VERTSPLIT | |
| 1217 if (wp->w_width == 0) /* there is no border */ | |
| 1218 return FALSE; | |
| 1219 #endif | |
| 1220 width1 = W_WIDTH(wp) - win_col_off(wp); | |
| 1869 | 1221 if ((int)vcol < width1 - 1) |
| 7 | 1222 return FALSE; |
| 1869 | 1223 if ((int)vcol == width1 - 1) |
| 7 | 1224 return TRUE; |
| 1225 width2 = width1 + win_col_off2(wp); | |
| 1970 | 1226 if (width2 <= 0) |
| 1227 return FALSE; | |
| 7 | 1228 return ((vcol - width1) % width2 == width2 - 1); |
| 1229 } | |
| 1230 #endif /* FEAT_MBYTE */ | |
| 1231 | |
| 1232 /* | |
| 1233 * Get virtual column number of pos. | |
| 1234 * start: on the first position of this character (TAB, ctrl) | |
| 1235 * cursor: where the cursor is on this character (first char, except for TAB) | |
| 1236 * end: on the last position of this character (TAB, ctrl) | |
| 1237 * | |
| 1238 * This is used very often, keep it fast! | |
| 1239 */ | |
| 1240 void | |
| 1241 getvcol(wp, pos, start, cursor, end) | |
| 1242 win_T *wp; | |
| 1243 pos_T *pos; | |
| 1244 colnr_T *start; | |
| 1245 colnr_T *cursor; | |
| 1246 colnr_T *end; | |
| 1247 { | |
| 1248 colnr_T vcol; | |
| 1249 char_u *ptr; /* points to current char */ | |
| 1250 char_u *posptr; /* points to char at pos->col */ | |
| 1251 int incr; | |
| 1252 int head; | |
| 1253 int ts = wp->w_buffer->b_p_ts; | |
| 1254 int c; | |
| 1255 | |
| 1256 vcol = 0; | |
| 1257 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); | |
|
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|
1258 if (pos->col == MAXCOL) |
|
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1259 posptr = NULL; /* continue until the NUL */ |
|
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1260 else |
|
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1261 posptr = ptr + pos->col; |
| 7 | 1262 |
| 1263 /* | |
| 1264 * This function is used very often, do some speed optimizations. | |
| 1265 * When 'list', 'linebreak' and 'showbreak' are not set use a simple loop. | |
| 1266 * Also use this when 'list' is set but tabs take their normal size. | |
| 1267 */ | |
| 1268 if ((!wp->w_p_list || lcs_tab1 != NUL) | |
| 1269 #ifdef FEAT_LINEBREAK | |
| 1270 && !wp->w_p_lbr && *p_sbr == NUL | |
| 1271 #endif | |
| 1272 ) | |
| 1273 { | |
| 1274 #ifndef FEAT_MBYTE | |
| 1275 head = 0; | |
| 1276 #endif | |
| 1277 for (;;) | |
| 1278 { | |
| 1279 #ifdef FEAT_MBYTE | |
| 1280 head = 0; | |
| 1281 #endif | |
| 1282 c = *ptr; | |
| 1283 /* make sure we don't go past the end of the line */ | |
| 1284 if (c == NUL) | |
| 1285 { | |
| 1286 incr = 1; /* NUL at end of line only takes one column */ | |
| 1287 break; | |
| 1288 } | |
| 1289 /* A tab gets expanded, depending on the current column */ | |
| 1290 if (c == TAB) | |
| 1291 incr = ts - (vcol % ts); | |
| 1292 else | |
| 1293 { | |
| 1294 #ifdef FEAT_MBYTE | |
| 1295 if (has_mbyte) | |
| 1296 { | |
| 1297 /* For utf-8, if the byte is >= 0x80, need to look at | |
| 1298 * further bytes to find the cell width. */ | |
| 1299 if (enc_utf8 && c >= 0x80) | |
| 1300 incr = utf_ptr2cells(ptr); | |
| 1301 else | |
| 1302 incr = CHARSIZE(c); | |
| 1303 | |
| 1304 /* If a double-cell char doesn't fit at the end of a line | |
| 1305 * it wraps to the next line, it's like this char is three | |
| 1306 * cells wide. */ | |
| 1546 | 1307 if (incr == 2 && wp->w_p_wrap && MB_BYTE2LEN(*ptr) > 1 |
| 1308 && in_win_border(wp, vcol)) | |
| 7 | 1309 { |
| 1310 ++incr; | |
| 1311 head = 1; | |
| 1312 } | |
| 1313 } | |
| 1314 else | |
| 1315 #endif | |
| 1316 incr = CHARSIZE(c); | |
| 1317 } | |
| 1318 | |
|
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|
1319 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
| 7 | 1320 break; |
| 1321 | |
| 1322 vcol += incr; | |
| 39 | 1323 mb_ptr_adv(ptr); |
| 7 | 1324 } |
| 1325 } | |
| 1326 else | |
| 1327 { | |
| 1328 for (;;) | |
| 1329 { | |
| 1330 /* A tab gets expanded, depending on the current column */ | |
| 1331 head = 0; | |
| 1332 incr = win_lbr_chartabsize(wp, ptr, vcol, &head); | |
| 1333 /* make sure we don't go past the end of the line */ | |
| 1334 if (*ptr == NUL) | |
| 1335 { | |
| 1336 incr = 1; /* NUL at end of line only takes one column */ | |
| 1337 break; | |
| 1338 } | |
| 1339 | |
|
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diff
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|
1340 if (posptr != NULL && ptr >= posptr) /* character at pos->col */ |
| 7 | 1341 break; |
| 1342 | |
| 1343 vcol += incr; | |
| 39 | 1344 mb_ptr_adv(ptr); |
| 7 | 1345 } |
| 1346 } | |
| 1347 if (start != NULL) | |
| 1348 *start = vcol + head; | |
| 1349 if (end != NULL) | |
| 1350 *end = vcol + incr - 1; | |
| 1351 if (cursor != NULL) | |
| 1352 { | |
| 1353 if (*ptr == TAB | |
| 1354 && (State & NORMAL) | |
| 1355 && !wp->w_p_list | |
| 1356 && !virtual_active() | |
| 1357 #ifdef FEAT_VISUAL | |
| 1358 && !(VIsual_active | |
| 1359 && (*p_sel == 'e' || ltoreq(*pos, VIsual))) | |
| 1360 #endif | |
| 1361 ) | |
| 1362 *cursor = vcol + incr - 1; /* cursor at end */ | |
| 1363 else | |
| 1364 *cursor = vcol + head; /* cursor at start */ | |
| 1365 } | |
| 1366 } | |
| 1367 | |
| 1368 /* | |
| 1369 * Get virtual cursor column in the current window, pretending 'list' is off. | |
| 1370 */ | |
| 1371 colnr_T | |
| 1372 getvcol_nolist(posp) | |
| 1373 pos_T *posp; | |
| 1374 { | |
| 1375 int list_save = curwin->w_p_list; | |
| 1376 colnr_T vcol; | |
| 1377 | |
| 1378 curwin->w_p_list = FALSE; | |
| 1379 getvcol(curwin, posp, NULL, &vcol, NULL); | |
| 1380 curwin->w_p_list = list_save; | |
| 1381 return vcol; | |
| 1382 } | |
| 1383 | |
| 1384 #if defined(FEAT_VIRTUALEDIT) || defined(PROTO) | |
| 1385 /* | |
| 1386 * Get virtual column in virtual mode. | |
| 1387 */ | |
| 1388 void | |
| 1389 getvvcol(wp, pos, start, cursor, end) | |
| 1390 win_T *wp; | |
| 1391 pos_T *pos; | |
| 1392 colnr_T *start; | |
| 1393 colnr_T *cursor; | |
| 1394 colnr_T *end; | |
| 1395 { | |
| 1396 colnr_T col; | |
| 1397 colnr_T coladd; | |
| 1398 colnr_T endadd; | |
| 1399 # ifdef FEAT_MBYTE | |
| 1400 char_u *ptr; | |
| 1401 # endif | |
| 1402 | |
| 1403 if (virtual_active()) | |
| 1404 { | |
| 1405 /* For virtual mode, only want one value */ | |
| 1406 getvcol(wp, pos, &col, NULL, NULL); | |
| 1407 | |
| 1408 coladd = pos->coladd; | |
| 1409 endadd = 0; | |
| 1410 # ifdef FEAT_MBYTE | |
| 1411 /* Cannot put the cursor on part of a wide character. */ | |
| 1412 ptr = ml_get_buf(wp->w_buffer, pos->lnum, FALSE); | |
| 1869 | 1413 if (pos->col < (colnr_T)STRLEN(ptr)) |
| 7 | 1414 { |
| 1415 int c = (*mb_ptr2char)(ptr + pos->col); | |
| 1416 | |
| 1417 if (c != TAB && vim_isprintc(c)) | |
| 1418 { | |
| 1869 | 1419 endadd = (colnr_T)(char2cells(c) - 1); |
| 557 | 1420 if (coladd > endadd) /* past end of line */ |
| 1421 endadd = 0; | |
| 7 | 1422 else |
| 1423 coladd = 0; | |
| 1424 } | |
| 1425 } | |
| 1426 # endif | |
| 1427 col += coladd; | |
| 1428 if (start != NULL) | |
| 1429 *start = col; | |
| 1430 if (cursor != NULL) | |
| 1431 *cursor = col; | |
| 1432 if (end != NULL) | |
| 1433 *end = col + endadd; | |
| 1434 } | |
| 1435 else | |
| 1436 getvcol(wp, pos, start, cursor, end); | |
| 1437 } | |
| 1438 #endif | |
| 1439 | |
| 1440 #if defined(FEAT_VISUAL) || defined(PROTO) | |
| 1441 /* | |
| 1442 * Get the leftmost and rightmost virtual column of pos1 and pos2. | |
| 1443 * Used for Visual block mode. | |
| 1444 */ | |
| 1445 void | |
| 1446 getvcols(wp, pos1, pos2, left, right) | |
| 1447 win_T *wp; | |
| 1448 pos_T *pos1, *pos2; | |
| 1449 colnr_T *left, *right; | |
| 1450 { | |
| 1451 colnr_T from1, from2, to1, to2; | |
| 1452 | |
| 1453 if (ltp(pos1, pos2)) | |
| 1454 { | |
| 1455 getvvcol(wp, pos1, &from1, NULL, &to1); | |
| 1456 getvvcol(wp, pos2, &from2, NULL, &to2); | |
| 1457 } | |
| 1458 else | |
| 1459 { | |
| 1460 getvvcol(wp, pos2, &from1, NULL, &to1); | |
| 1461 getvvcol(wp, pos1, &from2, NULL, &to2); | |
| 1462 } | |
| 1463 if (from2 < from1) | |
| 1464 *left = from2; | |
| 1465 else | |
| 1466 *left = from1; | |
| 1467 if (to2 > to1) | |
| 1468 { | |
| 1469 if (*p_sel == 'e' && from2 - 1 >= to1) | |
| 1470 *right = from2 - 1; | |
| 1471 else | |
| 1472 *right = to2; | |
| 1473 } | |
| 1474 else | |
| 1475 *right = to1; | |
| 1476 } | |
| 1477 #endif | |
| 1478 | |
| 1479 /* | |
| 1480 * skipwhite: skip over ' ' and '\t'. | |
| 1481 */ | |
| 1482 char_u * | |
| 1687 | 1483 skipwhite(q) |
| 1484 char_u *q; | |
| 7 | 1485 { |
| 1687 | 1486 char_u *p = q; |
| 1487 | |
| 7 | 1488 while (vim_iswhite(*p)) /* skip to next non-white */ |
| 1489 ++p; | |
| 1490 return p; | |
| 1491 } | |
| 1492 | |
| 1493 /* | |
| 293 | 1494 * skip over digits |
| 7 | 1495 */ |
| 1496 char_u * | |
| 1687 | 1497 skipdigits(q) |
| 1498 char_u *q; | |
| 7 | 1499 { |
| 1687 | 1500 char_u *p = q; |
| 1501 | |
| 7 | 1502 while (VIM_ISDIGIT(*p)) /* skip to next non-digit */ |
| 1503 ++p; | |
| 1504 return p; | |
| 1505 } | |
| 1506 | |
| 741 | 1507 #if defined(FEAT_SYN_HL) || defined(FEAT_SPELL) || defined(PROTO) |
| 301 | 1508 /* |
| 1509 * skip over digits and hex characters | |
| 1510 */ | |
| 1511 char_u * | |
| 1687 | 1512 skiphex(q) |
| 1513 char_u *q; | |
| 301 | 1514 { |
| 1687 | 1515 char_u *p = q; |
| 1516 | |
| 301 | 1517 while (vim_isxdigit(*p)) /* skip to next non-digit */ |
| 1518 ++p; | |
| 1519 return p; | |
| 1520 } | |
| 1521 #endif | |
| 1522 | |
| 293 | 1523 #if defined(FEAT_EX_EXTRA) || defined(PROTO) |
| 1524 /* | |
| 1525 * skip to digit (or NUL after the string) | |
| 1526 */ | |
| 1527 char_u * | |
| 1687 | 1528 skiptodigit(q) |
| 1529 char_u *q; | |
| 293 | 1530 { |
| 1687 | 1531 char_u *p = q; |
| 1532 | |
| 293 | 1533 while (*p != NUL && !VIM_ISDIGIT(*p)) /* skip to next digit */ |
| 1534 ++p; | |
| 1535 return p; | |
| 1536 } | |
| 1537 | |
| 1538 /* | |
| 1539 * skip to hex character (or NUL after the string) | |
| 1540 */ | |
| 1541 char_u * | |
| 1687 | 1542 skiptohex(q) |
| 1543 char_u *q; | |
| 293 | 1544 { |
| 1687 | 1545 char_u *p = q; |
| 1546 | |
| 293 | 1547 while (*p != NUL && !vim_isxdigit(*p)) /* skip to next digit */ |
| 1548 ++p; | |
| 1549 return p; | |
| 1550 } | |
| 1551 #endif | |
| 1552 | |
| 7 | 1553 /* |
| 1554 * Variant of isdigit() that can handle characters > 0x100. | |
| 1555 * We don't use isdigit() here, because on some systems it also considers | |
| 1556 * superscript 1 to be a digit. | |
| 1557 * Use the VIM_ISDIGIT() macro for simple arguments. | |
| 1558 */ | |
| 1559 int | |
| 1560 vim_isdigit(c) | |
| 1561 int c; | |
| 1562 { | |
| 1563 return (c >= '0' && c <= '9'); | |
| 1564 } | |
| 1565 | |
| 1566 /* | |
| 1567 * Variant of isxdigit() that can handle characters > 0x100. | |
| 1568 * We don't use isxdigit() here, because on some systems it also considers | |
| 1569 * superscript 1 to be a digit. | |
| 1570 */ | |
| 1571 int | |
| 1572 vim_isxdigit(c) | |
| 1573 int c; | |
| 1574 { | |
| 1575 return (c >= '0' && c <= '9') | |
| 1576 || (c >= 'a' && c <= 'f') | |
| 1577 || (c >= 'A' && c <= 'F'); | |
| 1578 } | |
| 1579 | |
| 492 | 1580 #if defined(FEAT_MBYTE) || defined(PROTO) |
| 1581 /* | |
| 1582 * Vim's own character class functions. These exist because many library | |
| 1583 * islower()/toupper() etc. do not work properly: they crash when used with | |
| 1584 * invalid values or can't handle latin1 when the locale is C. | |
| 1585 * Speed is most important here. | |
| 1586 */ | |
| 1587 #define LATIN1LOWER 'l' | |
| 1588 #define LATIN1UPPER 'U' | |
| 1589 | |
| 1590 /* !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]%_'abcdefghijklmnopqrstuvwxyz{|}~ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ */ | |
| 497 | 1591 static char_u latin1flags[257] = " UUUUUUUUUUUUUUUUUUUUUUUUUU llllllllllllllllllllllllll UUUUUUUUUUUUUUUUUUUUUUU UUUUUUUllllllllllllllllllllllll llllllll"; |
| 1592 static char_u latin1upper[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ÷ØÙÚÛÜÝÞÿ"; | |
| 1593 static char_u latin1lower[257] = " !\"#$%&'()*+,-./0123456789:;<=>?@abcdefghijklmnopqrstuvwxyz[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿àáâãäåæçèéêëìíîïðñòóôõö×øùúûüýþßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"; | |
| 492 | 1594 |
| 1595 int | |
| 1596 vim_islower(c) | |
| 1597 int c; | |
| 1598 { | |
| 1599 if (c <= '@') | |
| 1600 return FALSE; | |
| 1601 if (c >= 0x80) | |
| 1602 { | |
| 1603 if (enc_utf8) | |
| 1604 return utf_islower(c); | |
| 1605 if (c >= 0x100) | |
| 1606 { | |
| 1607 #ifdef HAVE_ISWLOWER | |
| 1608 if (has_mbyte) | |
| 1609 return iswlower(c); | |
| 1610 #endif | |
| 1611 /* islower() can't handle these chars and may crash */ | |
| 1612 return FALSE; | |
| 1613 } | |
| 1614 if (enc_latin1like) | |
| 1615 return (latin1flags[c] & LATIN1LOWER) == LATIN1LOWER; | |
| 1616 } | |
| 1617 return islower(c); | |
| 1618 } | |
| 1619 | |
| 1620 int | |
| 1621 vim_isupper(c) | |
| 1622 int c; | |
| 1623 { | |
| 1624 if (c <= '@') | |
| 1625 return FALSE; | |
| 1626 if (c >= 0x80) | |
| 1627 { | |
| 1628 if (enc_utf8) | |
| 1629 return utf_isupper(c); | |
| 1630 if (c >= 0x100) | |
| 1631 { | |
| 1632 #ifdef HAVE_ISWUPPER | |
| 1633 if (has_mbyte) | |
| 1634 return iswupper(c); | |
| 1635 #endif | |
| 1636 /* islower() can't handle these chars and may crash */ | |
| 1637 return FALSE; | |
| 1638 } | |
| 1639 if (enc_latin1like) | |
| 1640 return (latin1flags[c] & LATIN1UPPER) == LATIN1UPPER; | |
| 1641 } | |
| 1642 return isupper(c); | |
| 1643 } | |
| 1644 | |
| 1645 int | |
| 1646 vim_toupper(c) | |
| 1647 int c; | |
| 1648 { | |
| 1649 if (c <= '@') | |
| 1650 return c; | |
| 1651 if (c >= 0x80) | |
| 1652 { | |
| 1653 if (enc_utf8) | |
| 1654 return utf_toupper(c); | |
| 1655 if (c >= 0x100) | |
| 1656 { | |
| 1657 #ifdef HAVE_TOWUPPER | |
| 1658 if (has_mbyte) | |
| 1659 return towupper(c); | |
| 1660 #endif | |
| 1661 /* toupper() can't handle these chars and may crash */ | |
| 1662 return c; | |
| 1663 } | |
| 1664 if (enc_latin1like) | |
| 1665 return latin1upper[c]; | |
| 1666 } | |
| 1667 return TOUPPER_LOC(c); | |
| 1668 } | |
| 1669 | |
| 1670 int | |
| 1671 vim_tolower(c) | |
| 1672 int c; | |
| 1673 { | |
| 1674 if (c <= '@') | |
| 1675 return c; | |
| 1676 if (c >= 0x80) | |
| 1677 { | |
| 1678 if (enc_utf8) | |
| 1679 return utf_tolower(c); | |
| 1680 if (c >= 0x100) | |
| 1681 { | |
| 1682 #ifdef HAVE_TOWLOWER | |
| 1683 if (has_mbyte) | |
| 1684 return towlower(c); | |
| 1685 #endif | |
| 1686 /* tolower() can't handle these chars and may crash */ | |
| 1687 return c; | |
| 1688 } | |
| 1689 if (enc_latin1like) | |
| 1690 return latin1lower[c]; | |
| 1691 } | |
| 1692 return TOLOWER_LOC(c); | |
| 1693 } | |
| 1694 #endif | |
| 1695 | |
| 7 | 1696 /* |
| 1697 * skiptowhite: skip over text until ' ' or '\t' or NUL. | |
| 1698 */ | |
| 1699 char_u * | |
| 1700 skiptowhite(p) | |
| 1701 char_u *p; | |
| 1702 { | |
| 1703 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1704 ++p; | |
| 1705 return p; | |
| 1706 } | |
| 1707 | |
| 1708 #if defined(FEAT_LISTCMDS) || defined(FEAT_SIGNS) || defined(FEAT_SNIFF) \ | |
| 1709 || defined(PROTO) | |
| 1710 /* | |
| 1711 * skiptowhite_esc: Like skiptowhite(), but also skip escaped chars | |
| 1712 */ | |
| 1713 char_u * | |
| 1714 skiptowhite_esc(p) | |
| 1715 char_u *p; | |
| 1716 { | |
| 1717 while (*p != ' ' && *p != '\t' && *p != NUL) | |
| 1718 { | |
| 1719 if ((*p == '\\' || *p == Ctrl_V) && *(p + 1) != NUL) | |
| 1720 ++p; | |
| 1721 ++p; | |
| 1722 } | |
| 1723 return p; | |
| 1724 } | |
| 1725 #endif | |
| 1726 | |
| 1727 /* | |
| 1728 * Getdigits: Get a number from a string and skip over it. | |
| 1729 * Note: the argument is a pointer to a char_u pointer! | |
| 1730 */ | |
| 1731 long | |
| 1732 getdigits(pp) | |
| 1733 char_u **pp; | |
| 1734 { | |
| 1735 char_u *p; | |
| 1736 long retval; | |
| 1737 | |
| 1738 p = *pp; | |
| 1739 retval = atol((char *)p); | |
| 1740 if (*p == '-') /* skip negative sign */ | |
| 1741 ++p; | |
| 1742 p = skipdigits(p); /* skip to next non-digit */ | |
| 1743 *pp = p; | |
| 1744 return retval; | |
| 1745 } | |
| 1746 | |
| 1747 /* | |
| 1748 * Return TRUE if "lbuf" is empty or only contains blanks. | |
| 1749 */ | |
| 1750 int | |
| 1751 vim_isblankline(lbuf) | |
| 1752 char_u *lbuf; | |
| 1753 { | |
| 1754 char_u *p; | |
| 1755 | |
| 1756 p = skipwhite(lbuf); | |
| 1757 return (*p == NUL || *p == '\r' || *p == '\n'); | |
| 1758 } | |
| 1759 | |
| 1760 /* | |
| 1761 * Convert a string into a long and/or unsigned long, taking care of | |
| 16 | 1762 * hexadecimal and octal numbers. Accepts a '-' sign. |
| 7 | 1763 * If "hexp" is not NULL, returns a flag to indicate the type of the number: |
| 1764 * 0 decimal | |
| 1765 * '0' octal | |
| 1766 * 'X' hex | |
| 1767 * 'x' hex | |
| 1768 * If "len" is not NULL, the length of the number in characters is returned. | |
| 1769 * If "nptr" is not NULL, the signed result is returned in it. | |
| 1770 * If "unptr" is not NULL, the unsigned result is returned in it. | |
| 293 | 1771 * If "dooct" is non-zero recognize octal numbers, when > 1 always assume |
| 1772 * octal number. | |
| 782 | 1773 * If "dohex" is non-zero recognize hex numbers, when > 1 always assume |
| 293 | 1774 * hex number. |
| 7 | 1775 */ |
| 1776 void | |
| 1777 vim_str2nr(start, hexp, len, dooct, dohex, nptr, unptr) | |
| 1778 char_u *start; | |
| 1779 int *hexp; /* return: type of number 0 = decimal, 'x' | |
| 1780 or 'X' is hex, '0' = octal */ | |
| 1781 int *len; /* return: detected length of number */ | |
| 1782 int dooct; /* recognize octal number */ | |
| 1783 int dohex; /* recognize hex number */ | |
| 1784 long *nptr; /* return: signed result */ | |
| 1785 unsigned long *unptr; /* return: unsigned result */ | |
| 1786 { | |
| 1787 char_u *ptr = start; | |
| 1788 int hex = 0; /* default is decimal */ | |
| 1789 int negative = FALSE; | |
| 1790 unsigned long un = 0; | |
| 39 | 1791 int n; |
| 7 | 1792 |
| 1793 if (ptr[0] == '-') | |
| 1794 { | |
| 1795 negative = TRUE; | |
| 1796 ++ptr; | |
| 1797 } | |
| 1798 | |
| 39 | 1799 /* Recognize hex and octal. */ |
| 1800 if (ptr[0] == '0' && ptr[1] != '8' && ptr[1] != '9') | |
| 7 | 1801 { |
| 1802 hex = ptr[1]; | |
| 1803 if (dohex && (hex == 'X' || hex == 'x') && vim_isxdigit(ptr[2])) | |
| 1804 ptr += 2; /* hexadecimal */ | |
| 1805 else | |
| 1806 { | |
| 39 | 1807 hex = 0; /* default is decimal */ |
| 1808 if (dooct) | |
| 1809 { | |
| 1810 /* Don't interpret "0", "08" or "0129" as octal. */ | |
| 1811 for (n = 1; VIM_ISDIGIT(ptr[n]); ++n) | |
| 1812 { | |
| 1813 if (ptr[n] > '7') | |
| 1814 { | |
| 1815 hex = 0; /* can't be octal */ | |
| 1816 break; | |
| 1817 } | |
| 1818 if (ptr[n] > '0') | |
| 1819 hex = '0'; /* assume octal */ | |
| 1820 } | |
| 1821 } | |
| 7 | 1822 } |
| 1823 } | |
| 1824 | |
| 1825 /* | |
| 1826 * Do the string-to-numeric conversion "manually" to avoid sscanf quirks. | |
| 1827 */ | |
| 293 | 1828 if (hex == '0' || dooct > 1) |
| 7 | 1829 { |
| 293 | 1830 /* octal */ |
| 1831 while ('0' <= *ptr && *ptr <= '7') | |
| 7 | 1832 { |
| 293 | 1833 un = 8 * un + (unsigned long)(*ptr - '0'); |
| 1834 ++ptr; | |
| 7 | 1835 } |
| 293 | 1836 } |
| 1837 else if (hex != 0 || dohex > 1) | |
| 1838 { | |
| 1839 /* hex */ | |
| 1840 while (vim_isxdigit(*ptr)) | |
| 7 | 1841 { |
| 293 | 1842 un = 16 * un + (unsigned long)hex2nr(*ptr); |
| 1843 ++ptr; | |
| 7 | 1844 } |
| 1845 } | |
| 1846 else | |
| 1847 { | |
| 1848 /* decimal */ | |
| 1849 while (VIM_ISDIGIT(*ptr)) | |
| 1850 { | |
| 1851 un = 10 * un + (unsigned long)(*ptr - '0'); | |
| 1852 ++ptr; | |
| 1853 } | |
| 1854 } | |
| 1855 | |
| 1856 if (hexp != NULL) | |
| 1857 *hexp = hex; | |
| 1858 if (len != NULL) | |
| 1859 *len = (int)(ptr - start); | |
| 1860 if (nptr != NULL) | |
| 16 | 1861 { |
| 1862 if (negative) /* account for leading '-' for decimal numbers */ | |
| 1863 *nptr = -(long)un; | |
| 1864 else | |
| 1865 *nptr = (long)un; | |
| 1866 } | |
| 7 | 1867 if (unptr != NULL) |
| 1868 *unptr = un; | |
| 1869 } | |
| 1870 | |
| 1871 /* | |
| 1872 * Return the value of a single hex character. | |
| 1873 * Only valid when the argument is '0' - '9', 'A' - 'F' or 'a' - 'f'. | |
| 1874 */ | |
| 1875 int | |
| 1876 hex2nr(c) | |
| 1877 int c; | |
| 1878 { | |
| 1879 if (c >= 'a' && c <= 'f') | |
| 1880 return c - 'a' + 10; | |
| 1881 if (c >= 'A' && c <= 'F') | |
| 1882 return c - 'A' + 10; | |
| 1883 return c - '0'; | |
| 1884 } | |
| 1885 | |
| 1886 #if defined(FEAT_TERMRESPONSE) \ | |
| 1887 || (defined(FEAT_GUI_GTK) && defined(FEAT_WINDOWS)) || defined(PROTO) | |
| 1888 /* | |
| 1889 * Convert two hex characters to a byte. | |
| 1890 * Return -1 if one of the characters is not hex. | |
| 1891 */ | |
| 1892 int | |
| 1893 hexhex2nr(p) | |
| 1894 char_u *p; | |
| 1895 { | |
| 1896 if (!vim_isxdigit(p[0]) || !vim_isxdigit(p[1])) | |
| 1897 return -1; | |
| 1898 return (hex2nr(p[0]) << 4) + hex2nr(p[1]); | |
| 1899 } | |
| 1900 #endif | |
| 1901 | |
| 1902 /* | |
| 1903 * Return TRUE if "str" starts with a backslash that should be removed. | |
| 1904 * For MS-DOS, WIN32 and OS/2 this is only done when the character after the | |
| 1905 * backslash is not a normal file name character. | |
| 1906 * '$' is a valid file name character, we don't remove the backslash before | |
| 1907 * it. This means it is not possible to use an environment variable after a | |
| 1908 * backslash. "C:\$VIM\doc" is taken literally, only "$VIM\doc" works. | |
| 1909 * Although "\ name" is valid, the backslash in "Program\ files" must be | |
| 1910 * removed. Assume a file name doesn't start with a space. | |
| 1911 * For multi-byte names, never remove a backslash before a non-ascii | |
| 1912 * character, assume that all multi-byte characters are valid file name | |
| 1913 * characters. | |
| 1914 */ | |
| 1915 int | |
| 1916 rem_backslash(str) | |
| 1917 char_u *str; | |
| 1918 { | |
| 1919 #ifdef BACKSLASH_IN_FILENAME | |
| 1920 return (str[0] == '\\' | |
| 1921 # ifdef FEAT_MBYTE | |
| 1922 && str[1] < 0x80 | |
| 1923 # endif | |
| 1924 && (str[1] == ' ' | |
| 1925 || (str[1] != NUL | |
| 1926 && str[1] != '*' | |
| 1927 && str[1] != '?' | |
| 1928 && !vim_isfilec(str[1])))); | |
| 1929 #else | |
| 1930 return (str[0] == '\\' && str[1] != NUL); | |
| 1931 #endif | |
| 1932 } | |
| 1933 | |
| 1934 /* | |
| 1935 * Halve the number of backslashes in a file name argument. | |
| 1936 * For MS-DOS we only do this if the character after the backslash | |
| 1937 * is not a normal file character. | |
| 1938 */ | |
| 1939 void | |
| 1940 backslash_halve(p) | |
| 1941 char_u *p; | |
| 1942 { | |
| 1943 for ( ; *p; ++p) | |
| 1944 if (rem_backslash(p)) | |
| 1621 | 1945 STRMOVE(p, p + 1); |
| 7 | 1946 } |
| 1947 | |
| 1948 /* | |
| 1949 * backslash_halve() plus save the result in allocated memory. | |
| 1950 */ | |
| 1951 char_u * | |
| 1952 backslash_halve_save(p) | |
| 1953 char_u *p; | |
| 1954 { | |
| 1955 char_u *res; | |
| 1956 | |
| 1957 res = vim_strsave(p); | |
| 1958 if (res == NULL) | |
| 1959 return p; | |
| 1960 backslash_halve(res); | |
| 1961 return res; | |
| 1962 } | |
| 1963 | |
| 1964 #if (defined(EBCDIC) && defined(FEAT_POSTSCRIPT)) || defined(PROTO) | |
| 1965 /* | |
| 1966 * Table for EBCDIC to ASCII conversion unashamedly taken from xxd.c! | |
| 1967 * The first 64 entries have been added to map control characters defined in | |
| 1968 * ascii.h | |
| 1969 */ | |
| 1970 static char_u ebcdic2ascii_tab[256] = | |
| 1971 { | |
| 1972 0000, 0001, 0002, 0003, 0004, 0011, 0006, 0177, | |
| 1973 0010, 0011, 0012, 0013, 0014, 0015, 0016, 0017, | |
| 1974 0020, 0021, 0022, 0023, 0024, 0012, 0010, 0027, | |
| 1975 0030, 0031, 0032, 0033, 0033, 0035, 0036, 0037, | |
| 1976 0040, 0041, 0042, 0043, 0044, 0045, 0046, 0047, | |
| 1977 0050, 0051, 0052, 0053, 0054, 0055, 0056, 0057, | |
| 1978 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 1979 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, | |
| 1980 0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246, | |
| 1981 0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174, | |
| 1982 0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257, | |
| 1983 0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176, | |
| 1984 0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267, | |
| 1985 0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077, | |
| 1986 0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301, | |
| 1987 0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042, | |
| 1988 0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147, | |
| 1989 0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311, | |
| 1990 0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160, | |
| 1991 0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320, | |
| 1992 0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170, | |
| 1993 0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327, | |
| 1994 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337, | |
| 1995 0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347, | |
| 1996 0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107, | |
| 1997 0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355, | |
| 1998 0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120, | |
| 1999 0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363, | |
| 2000 0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130, | |
| 2001 0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371, | |
| 2002 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, | |
| 2003 0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377 | |
| 2004 }; | |
| 2005 | |
| 2006 /* | |
| 2007 * Convert a buffer worth of characters from EBCDIC to ASCII. Only useful if | |
| 2008 * wanting 7-bit ASCII characters out the other end. | |
| 2009 */ | |
| 2010 void | |
| 2011 ebcdic2ascii(buffer, len) | |
| 2012 char_u *buffer; | |
| 2013 int len; | |
| 2014 { | |
| 2015 int i; | |
| 2016 | |
| 2017 for (i = 0; i < len; i++) | |
| 2018 buffer[i] = ebcdic2ascii_tab[buffer[i]]; | |
| 2019 } | |
| 2020 #endif |