1 /* vi:set ts=8 sts=4 sw=4 noet: 2 * 3 * VIM - Vi IMproved by Bram Moolenaar 4 * Multibyte extensions partly by Sung-Hoon Baek 5 * 6 * Do ":help uganda" in Vim to read copying and usage conditions. 7 * Do ":help credits" in Vim to see a list of people who contributed. 8 * See README.txt for an overview of the Vim source code. 9 */ 10 /* 11 * mbyte.c: Code specifically for handling multi-byte characters. 12 * 13 * The encoding used in the core is set with 'encoding'. When 'encoding' is 14 * changed, the following four variables are set (for speed). 15 * Currently these types of character encodings are supported: 16 * 17 * "enc_dbcs" When non-zero it tells the type of double byte character 18 * encoding (Chinese, Korean, Japanese, etc.). 19 * The cell width on the display is equal to the number of 20 * bytes. (exception: DBCS_JPNU with first byte 0x8e) 21 * Recognizing the first or second byte is difficult, it 22 * requires checking a byte sequence from the start. 23 * "enc_utf8" When TRUE use Unicode characters in UTF-8 encoding. 24 * The cell width on the display needs to be determined from 25 * the character value. 26 * Recognizing bytes is easy: 0xxx.xxxx is a single-byte 27 * char, 10xx.xxxx is a trailing byte, 11xx.xxxx is a leading 28 * byte of a multi-byte character. 29 * To make things complicated, up to six composing characters 30 * are allowed. These are drawn on top of the first char. 31 * For most editing the sequence of bytes with composing 32 * characters included is considered to be one character. 33 * "enc_unicode" When 2 use 16-bit Unicode characters (or UTF-16). 34 * When 4 use 32-but Unicode characters. 35 * Internally characters are stored in UTF-8 encoding to 36 * avoid NUL bytes. Conversion happens when doing I/O. 37 * "enc_utf8" will also be TRUE. 38 * 39 * "has_mbyte" is set when "enc_dbcs" or "enc_utf8" is non-zero. 40 * 41 * If none of these is TRUE, 8-bit bytes are used for a character. The 42 * encoding isn't currently specified (TODO). 43 * 44 * 'encoding' specifies the encoding used in the core. This is in registers, 45 * text manipulation, buffers, etc. Conversion has to be done when characters 46 * in another encoding are received or send: 47 * 48 * clipboard 49 * ^ 50 * | (2) 51 * V 52 * +---------------+ 53 * (1) | | (3) 54 * keyboard ----->| core |-----> display 55 * | | 56 * +---------------+ 57 * ^ 58 * | (4) 59 * V 60 * file 61 * 62 * (1) Typed characters arrive in the current locale. Conversion is to be 63 * done when 'encoding' is different from 'termencoding'. 64 * (2) Text will be made available with the encoding specified with 65 * 'encoding'. If this is not sufficient, system-specific conversion 66 * might be required. 67 * (3) For the GUI the correct font must be selected, no conversion done. 68 * Otherwise, conversion is to be done when 'encoding' differs from 69 * 'termencoding'. (Different in the GTK+ 2 port -- 'termencoding' 70 * is always used for both input and output and must always be set to 71 * "utf-8". gui_mch_init() does this automatically.) 72 * (4) The encoding of the file is specified with 'fileencoding'. Conversion 73 * is to be done when it's different from 'encoding'. 74 * 75 * The viminfo file is a special case: Only text is converted, not file names. 76 * Vim scripts may contain an ":encoding" command. This has an effect for 77 * some commands, like ":menutrans" 78 */ 79 80 #include "vim.h" 81 82 #ifdef WIN32UNIX 83 # ifndef WIN32_LEAN_AND_MEAN 84 # define WIN32_LEAN_AND_MEAN 85 # endif 86 # if defined(FEAT_GUI) || defined(FEAT_XCLIPBOARD) 87 # include <X11/Xwindows.h> 88 # define WINBYTE wBYTE 89 # else 90 # include <windows.h> 91 # define WINBYTE BYTE 92 # endif 93 # ifdef WIN32 94 # undef WIN32 // Some windows.h define WIN32, we don't want that here. 95 # endif 96 #else 97 # define WINBYTE BYTE 98 #endif 99 100 #if (defined(MSWIN) || defined(WIN32UNIX)) && !defined(__MINGW32__) 101 # include <winnls.h> 102 #endif 103 104 #ifdef FEAT_GUI_X11 105 # include <X11/Intrinsic.h> 106 #endif 107 #ifdef X_LOCALE 108 # include <X11/Xlocale.h> 109 # if !defined(HAVE_MBLEN) && !defined(mblen) 110 # define mblen _Xmblen 111 # endif 112 #endif 113 114 #ifdef HAVE_WCHAR_H 115 # include <wchar.h> 116 #endif 117 118 #if 0 119 // This has been disabled, because several people reported problems with the 120 // wcwidth() and iswprint() library functions, esp. for Hebrew. 121 # ifdef __STDC_ISO_10646__ 122 # define USE_WCHAR_FUNCTIONS 123 # endif 124 #endif 125 126 static int dbcs_char2len(int c); 127 static int dbcs_char2bytes(int c, char_u *buf); 128 static int dbcs_ptr2len(char_u *p); 129 static int dbcs_ptr2len_len(char_u *p, int size); 130 static int utf_ptr2cells_len(char_u *p, int size); 131 static int dbcs_char2cells(int c); 132 static int dbcs_ptr2cells_len(char_u *p, int size); 133 static int dbcs_ptr2char(char_u *p); 134 static int dbcs_head_off(char_u *base, char_u *p); 135 #ifdef FEAT_EVAL 136 static int cw_value(int c); 137 #endif 138 139 /* 140 * Lookup table to quickly get the length in bytes of a UTF-8 character from 141 * the first byte of a UTF-8 string. 142 * Bytes which are illegal when used as the first byte have a 1. 143 * The NUL byte has length 1. 144 */ 145 static char utf8len_tab[256] = 146 { 147 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 148 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 149 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 150 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 151 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 152 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 153 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 154 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1, 155 }; 156 157 /* 158 * Like utf8len_tab above, but using a zero for illegal lead bytes. 159 */ 160 static char utf8len_tab_zero[256] = 161 { 162 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 163 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 164 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 165 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 166 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 167 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 168 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 169 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0, 170 }; 171 172 173 /* 174 * Canonical encoding names and their properties. 175 * "iso-8859-n" is handled by enc_canonize() directly. 176 */ 177 static struct 178 { char *name; int prop; int codepage;} 179 enc_canon_table[] = 180 { 181 #define IDX_LATIN_1 0 182 {"latin1", ENC_8BIT + ENC_LATIN1, 1252}, 183 #define IDX_ISO_2 1 184 {"iso-8859-2", ENC_8BIT, 0}, 185 #define IDX_ISO_3 2 186 {"iso-8859-3", ENC_8BIT, 0}, 187 #define IDX_ISO_4 3 188 {"iso-8859-4", ENC_8BIT, 0}, 189 #define IDX_ISO_5 4 190 {"iso-8859-5", ENC_8BIT, 0}, 191 #define IDX_ISO_6 5 192 {"iso-8859-6", ENC_8BIT, 0}, 193 #define IDX_ISO_7 6 194 {"iso-8859-7", ENC_8BIT, 0}, 195 #define IDX_ISO_8 7 196 {"iso-8859-8", ENC_8BIT, 0}, 197 #define IDX_ISO_9 8 198 {"iso-8859-9", ENC_8BIT, 0}, 199 #define IDX_ISO_10 9 200 {"iso-8859-10", ENC_8BIT, 0}, 201 #define IDX_ISO_11 10 202 {"iso-8859-11", ENC_8BIT, 0}, 203 #define IDX_ISO_13 11 204 {"iso-8859-13", ENC_8BIT, 0}, 205 #define IDX_ISO_14 12 206 {"iso-8859-14", ENC_8BIT, 0}, 207 #define IDX_ISO_15 13 208 {"iso-8859-15", ENC_8BIT + ENC_LATIN9, 0}, 209 #define IDX_KOI8_R 14 210 {"koi8-r", ENC_8BIT, 0}, 211 #define IDX_KOI8_U 15 212 {"koi8-u", ENC_8BIT, 0}, 213 #define IDX_UTF8 16 214 {"utf-8", ENC_UNICODE, 0}, 215 #define IDX_UCS2 17 216 {"ucs-2", ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0}, 217 #define IDX_UCS2LE 18 218 {"ucs-2le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0}, 219 #define IDX_UTF16 19 220 {"utf-16", ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0}, 221 #define IDX_UTF16LE 20 222 {"utf-16le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0}, 223 #define IDX_UCS4 21 224 {"ucs-4", ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0}, 225 #define IDX_UCS4LE 22 226 {"ucs-4le", ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0}, 227 228 // For debugging DBCS encoding on Unix. 229 #define IDX_DEBUG 23 230 {"debug", ENC_DBCS, DBCS_DEBUG}, 231 #define IDX_EUC_JP 24 232 {"euc-jp", ENC_DBCS, DBCS_JPNU}, 233 #define IDX_SJIS 25 234 {"sjis", ENC_DBCS, DBCS_JPN}, 235 #define IDX_EUC_KR 26 236 {"euc-kr", ENC_DBCS, DBCS_KORU}, 237 #define IDX_EUC_CN 27 238 {"euc-cn", ENC_DBCS, DBCS_CHSU}, 239 #define IDX_EUC_TW 28 240 {"euc-tw", ENC_DBCS, DBCS_CHTU}, 241 #define IDX_BIG5 29 242 {"big5", ENC_DBCS, DBCS_CHT}, 243 244 // MS-DOS and MS-Windows codepages are included here, so that they can be 245 // used on Unix too. Most of them are similar to ISO-8859 encodings, but 246 // not exactly the same. 247 #define IDX_CP437 30 248 {"cp437", ENC_8BIT, 437}, // like iso-8859-1 249 #define IDX_CP737 31 250 {"cp737", ENC_8BIT, 737}, // like iso-8859-7 251 #define IDX_CP775 32 252 {"cp775", ENC_8BIT, 775}, // Baltic 253 #define IDX_CP850 33 254 {"cp850", ENC_8BIT, 850}, // like iso-8859-4 255 #define IDX_CP852 34 256 {"cp852", ENC_8BIT, 852}, // like iso-8859-1 257 #define IDX_CP855 35 258 {"cp855", ENC_8BIT, 855}, // like iso-8859-2 259 #define IDX_CP857 36 260 {"cp857", ENC_8BIT, 857}, // like iso-8859-5 261 #define IDX_CP860 37 262 {"cp860", ENC_8BIT, 860}, // like iso-8859-9 263 #define IDX_CP861 38 264 {"cp861", ENC_8BIT, 861}, // like iso-8859-1 265 #define IDX_CP862 39 266 {"cp862", ENC_8BIT, 862}, // like iso-8859-1 267 #define IDX_CP863 40 268 {"cp863", ENC_8BIT, 863}, // like iso-8859-8 269 #define IDX_CP865 41 270 {"cp865", ENC_8BIT, 865}, // like iso-8859-1 271 #define IDX_CP866 42 272 {"cp866", ENC_8BIT, 866}, // like iso-8859-5 273 #define IDX_CP869 43 274 {"cp869", ENC_8BIT, 869}, // like iso-8859-7 275 #define IDX_CP874 44 276 {"cp874", ENC_8BIT, 874}, // Thai 277 #define IDX_CP932 45 278 {"cp932", ENC_DBCS, DBCS_JPN}, 279 #define IDX_CP936 46 280 {"cp936", ENC_DBCS, DBCS_CHS}, 281 #define IDX_CP949 47 282 {"cp949", ENC_DBCS, DBCS_KOR}, 283 #define IDX_CP950 48 284 {"cp950", ENC_DBCS, DBCS_CHT}, 285 #define IDX_CP1250 49 286 {"cp1250", ENC_8BIT, 1250}, // Czech, Polish, etc. 287 #define IDX_CP1251 50 288 {"cp1251", ENC_8BIT, 1251}, // Cyrillic 289 // cp1252 is considered to be equal to latin1 290 #define IDX_CP1253 51 291 {"cp1253", ENC_8BIT, 1253}, // Greek 292 #define IDX_CP1254 52 293 {"cp1254", ENC_8BIT, 1254}, // Turkish 294 #define IDX_CP1255 53 295 {"cp1255", ENC_8BIT, 1255}, // Hebrew 296 #define IDX_CP1256 54 297 {"cp1256", ENC_8BIT, 1256}, // Arabic 298 #define IDX_CP1257 55 299 {"cp1257", ENC_8BIT, 1257}, // Baltic 300 #define IDX_CP1258 56 301 {"cp1258", ENC_8BIT, 1258}, // Vietnamese 302 303 #define IDX_MACROMAN 57 304 {"macroman", ENC_8BIT + ENC_MACROMAN, 0}, // Mac OS 305 #define IDX_DECMCS 58 306 {"dec-mcs", ENC_8BIT, 0}, // DEC MCS 307 #define IDX_HPROMAN8 59 308 {"hp-roman8", ENC_8BIT, 0}, // HP Roman8 309 #define IDX_COUNT 60 310 }; 311 312 /* 313 * Aliases for encoding names. 314 */ 315 static struct 316 { char *name; int canon;} 317 enc_alias_table[] = 318 { 319 {"ansi", IDX_LATIN_1}, 320 {"iso-8859-1", IDX_LATIN_1}, 321 {"latin2", IDX_ISO_2}, 322 {"latin3", IDX_ISO_3}, 323 {"latin4", IDX_ISO_4}, 324 {"cyrillic", IDX_ISO_5}, 325 {"arabic", IDX_ISO_6}, 326 {"greek", IDX_ISO_7}, 327 #ifdef MSWIN 328 {"hebrew", IDX_CP1255}, 329 #else 330 {"hebrew", IDX_ISO_8}, 331 #endif 332 {"latin5", IDX_ISO_9}, 333 {"turkish", IDX_ISO_9}, // ? 334 {"latin6", IDX_ISO_10}, 335 {"nordic", IDX_ISO_10}, // ? 336 {"thai", IDX_ISO_11}, // ? 337 {"latin7", IDX_ISO_13}, 338 {"latin8", IDX_ISO_14}, 339 {"latin9", IDX_ISO_15}, 340 {"utf8", IDX_UTF8}, 341 {"unicode", IDX_UCS2}, 342 {"ucs2", IDX_UCS2}, 343 {"ucs2be", IDX_UCS2}, 344 {"ucs-2be", IDX_UCS2}, 345 {"ucs2le", IDX_UCS2LE}, 346 {"utf16", IDX_UTF16}, 347 {"utf16be", IDX_UTF16}, 348 {"utf-16be", IDX_UTF16}, 349 {"utf16le", IDX_UTF16LE}, 350 {"ucs4", IDX_UCS4}, 351 {"ucs4be", IDX_UCS4}, 352 {"ucs-4be", IDX_UCS4}, 353 {"ucs4le", IDX_UCS4LE}, 354 {"utf32", IDX_UCS4}, 355 {"utf-32", IDX_UCS4}, 356 {"utf32be", IDX_UCS4}, 357 {"utf-32be", IDX_UCS4}, 358 {"utf32le", IDX_UCS4LE}, 359 {"utf-32le", IDX_UCS4LE}, 360 {"932", IDX_CP932}, 361 {"949", IDX_CP949}, 362 {"936", IDX_CP936}, 363 {"gbk", IDX_CP936}, 364 {"950", IDX_CP950}, 365 {"eucjp", IDX_EUC_JP}, 366 {"unix-jis", IDX_EUC_JP}, 367 {"ujis", IDX_EUC_JP}, 368 {"shift-jis", IDX_SJIS}, 369 {"pck", IDX_SJIS}, // Sun: PCK 370 {"euckr", IDX_EUC_KR}, 371 {"5601", IDX_EUC_KR}, // Sun: KS C 5601 372 {"euccn", IDX_EUC_CN}, 373 {"gb2312", IDX_EUC_CN}, 374 {"euctw", IDX_EUC_TW}, 375 #if defined(MSWIN) || defined(WIN32UNIX) || defined(MACOS_X) 376 {"japan", IDX_CP932}, 377 {"korea", IDX_CP949}, 378 {"prc", IDX_CP936}, 379 {"chinese", IDX_CP936}, 380 {"taiwan", IDX_CP950}, 381 {"big5", IDX_CP950}, 382 #else 383 {"japan", IDX_EUC_JP}, 384 {"korea", IDX_EUC_KR}, 385 {"prc", IDX_EUC_CN}, 386 {"chinese", IDX_EUC_CN}, 387 {"taiwan", IDX_EUC_TW}, 388 {"cp950", IDX_BIG5}, 389 {"950", IDX_BIG5}, 390 #endif 391 {"mac", IDX_MACROMAN}, 392 {"mac-roman", IDX_MACROMAN}, 393 {NULL, 0} 394 }; 395 396 #ifndef CP_UTF8 397 # define CP_UTF8 65001 // magic number from winnls.h 398 #endif 399 400 /* 401 * Find encoding "name" in the list of canonical encoding names. 402 * Returns -1 if not found. 403 */ 404 static int 405 enc_canon_search(char_u *name) 406 { 407 int i; 408 409 for (i = 0; i < IDX_COUNT; ++i) 410 if (STRCMP(name, enc_canon_table[i].name) == 0) 411 return i; 412 return -1; 413 } 414 415 416 /* 417 * Find canonical encoding "name" in the list and return its properties. 418 * Returns 0 if not found. 419 */ 420 int 421 enc_canon_props(char_u *name) 422 { 423 int i; 424 425 i = enc_canon_search(name); 426 if (i >= 0) 427 return enc_canon_table[i].prop; 428 #ifdef MSWIN 429 if (name[0] == 'c' && name[1] == 'p' && VIM_ISDIGIT(name[2])) 430 { 431 CPINFO cpinfo; 432 433 // Get info on this codepage to find out what it is. 434 if (GetCPInfo(atoi((char *)name + 2), &cpinfo) != 0) 435 { 436 if (cpinfo.MaxCharSize == 1) // some single-byte encoding 437 return ENC_8BIT; 438 if (cpinfo.MaxCharSize == 2 439 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) 440 // must be a DBCS encoding 441 return ENC_DBCS; 442 } 443 return 0; 444 } 445 #endif 446 if (STRNCMP(name, "2byte-", 6) == 0) 447 return ENC_DBCS; 448 if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0) 449 return ENC_8BIT; 450 return 0; 451 } 452 453 /* 454 * Set up for using multi-byte characters. 455 * Called in three cases: 456 * - by main() to initialize (p_enc == NULL) 457 * - by set_init_1() after 'encoding' was set to its default. 458 * - by do_set() when 'encoding' has been set. 459 * p_enc must have been passed through enc_canonize() already. 460 * Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags. 461 * Fills mb_bytelen_tab[] and returns NULL when there are no problems. 462 * When there is something wrong: Returns an error message and doesn't change 463 * anything. 464 */ 465 char * 466 mb_init(void) 467 { 468 int i; 469 int idx; 470 int n; 471 int enc_dbcs_new = 0; 472 #if defined(USE_ICONV) && !defined(MSWIN) && !defined(WIN32UNIX) \ 473 && !defined(MACOS_CONVERT) 474 # define LEN_FROM_CONV 475 vimconv_T vimconv; 476 char_u *p; 477 #endif 478 479 if (p_enc == NULL) 480 { 481 // Just starting up: set the whole table to one's. 482 for (i = 0; i < 256; ++i) 483 mb_bytelen_tab[i] = 1; 484 input_conv.vc_type = CONV_NONE; 485 input_conv.vc_factor = 1; 486 output_conv.vc_type = CONV_NONE; 487 return NULL; 488 } 489 490 #ifdef MSWIN 491 if (p_enc[0] == 'c' && p_enc[1] == 'p' && VIM_ISDIGIT(p_enc[2])) 492 { 493 CPINFO cpinfo; 494 495 // Get info on this codepage to find out what it is. 496 if (GetCPInfo(atoi((char *)p_enc + 2), &cpinfo) != 0) 497 { 498 if (cpinfo.MaxCharSize == 1) 499 { 500 // some single-byte encoding 501 enc_unicode = 0; 502 enc_utf8 = FALSE; 503 } 504 else if (cpinfo.MaxCharSize == 2 505 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) 506 { 507 // must be a DBCS encoding, check below 508 enc_dbcs_new = atoi((char *)p_enc + 2); 509 } 510 else 511 goto codepage_invalid; 512 } 513 else if (GetLastError() == ERROR_INVALID_PARAMETER) 514 { 515 codepage_invalid: 516 return N_("E543: Not a valid codepage"); 517 } 518 } 519 #endif 520 else if (STRNCMP(p_enc, "8bit-", 5) == 0 521 || STRNCMP(p_enc, "iso-8859-", 9) == 0) 522 { 523 // Accept any "8bit-" or "iso-8859-" name. 524 enc_unicode = 0; 525 enc_utf8 = FALSE; 526 } 527 else if (STRNCMP(p_enc, "2byte-", 6) == 0) 528 { 529 #ifdef MSWIN 530 // Windows: accept only valid codepage numbers, check below. 531 if (p_enc[6] != 'c' || p_enc[7] != 'p' 532 || (enc_dbcs_new = atoi((char *)p_enc + 8)) == 0) 533 return e_invarg; 534 #else 535 // Unix: accept any "2byte-" name, assume current locale. 536 enc_dbcs_new = DBCS_2BYTE; 537 #endif 538 } 539 else if ((idx = enc_canon_search(p_enc)) >= 0) 540 { 541 i = enc_canon_table[idx].prop; 542 if (i & ENC_UNICODE) 543 { 544 // Unicode 545 enc_utf8 = TRUE; 546 if (i & (ENC_2BYTE | ENC_2WORD)) 547 enc_unicode = 2; 548 else if (i & ENC_4BYTE) 549 enc_unicode = 4; 550 else 551 enc_unicode = 0; 552 } 553 else if (i & ENC_DBCS) 554 { 555 // 2byte, handle below 556 enc_dbcs_new = enc_canon_table[idx].codepage; 557 } 558 else 559 { 560 // Must be 8-bit. 561 enc_unicode = 0; 562 enc_utf8 = FALSE; 563 } 564 } 565 else // Don't know what encoding this is, reject it. 566 return e_invarg; 567 568 if (enc_dbcs_new != 0) 569 { 570 #ifdef MSWIN 571 // Check if the DBCS code page is OK. 572 if (!IsValidCodePage(enc_dbcs_new)) 573 goto codepage_invalid; 574 #endif 575 enc_unicode = 0; 576 enc_utf8 = FALSE; 577 } 578 enc_dbcs = enc_dbcs_new; 579 has_mbyte = (enc_dbcs != 0 || enc_utf8); 580 581 #if defined(MSWIN) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD) 582 enc_codepage = encname2codepage(p_enc); 583 enc_latin9 = (STRCMP(p_enc, "iso-8859-15") == 0); 584 #endif 585 586 // Detect an encoding that uses latin1 characters. 587 enc_latin1like = (enc_utf8 || STRCMP(p_enc, "latin1") == 0 588 || STRCMP(p_enc, "iso-8859-15") == 0); 589 590 /* 591 * Set the function pointers. 592 */ 593 if (enc_utf8) 594 { 595 mb_ptr2len = utfc_ptr2len; 596 mb_ptr2len_len = utfc_ptr2len_len; 597 mb_char2len = utf_char2len; 598 mb_char2bytes = utf_char2bytes; 599 mb_ptr2cells = utf_ptr2cells; 600 mb_ptr2cells_len = utf_ptr2cells_len; 601 mb_char2cells = utf_char2cells; 602 mb_off2cells = utf_off2cells; 603 mb_ptr2char = utf_ptr2char; 604 mb_head_off = utf_head_off; 605 } 606 else if (enc_dbcs != 0) 607 { 608 mb_ptr2len = dbcs_ptr2len; 609 mb_ptr2len_len = dbcs_ptr2len_len; 610 mb_char2len = dbcs_char2len; 611 mb_char2bytes = dbcs_char2bytes; 612 mb_ptr2cells = dbcs_ptr2cells; 613 mb_ptr2cells_len = dbcs_ptr2cells_len; 614 mb_char2cells = dbcs_char2cells; 615 mb_off2cells = dbcs_off2cells; 616 mb_ptr2char = dbcs_ptr2char; 617 mb_head_off = dbcs_head_off; 618 } 619 else 620 { 621 mb_ptr2len = latin_ptr2len; 622 mb_ptr2len_len = latin_ptr2len_len; 623 mb_char2len = latin_char2len; 624 mb_char2bytes = latin_char2bytes; 625 mb_ptr2cells = latin_ptr2cells; 626 mb_ptr2cells_len = latin_ptr2cells_len; 627 mb_char2cells = latin_char2cells; 628 mb_off2cells = latin_off2cells; 629 mb_ptr2char = latin_ptr2char; 630 mb_head_off = latin_head_off; 631 } 632 633 /* 634 * Fill the mb_bytelen_tab[] for MB_BYTE2LEN(). 635 */ 636 #ifdef LEN_FROM_CONV 637 // When 'encoding' is different from the current locale mblen() won't 638 // work. Use conversion to "utf-8" instead. 639 vimconv.vc_type = CONV_NONE; 640 if (enc_dbcs) 641 { 642 p = enc_locale(); 643 if (p == NULL || STRCMP(p, p_enc) != 0) 644 { 645 convert_setup(&vimconv, p_enc, (char_u *)"utf-8"); 646 vimconv.vc_fail = TRUE; 647 } 648 vim_free(p); 649 } 650 #endif 651 652 for (i = 0; i < 256; ++i) 653 { 654 // Our own function to reliably check the length of UTF-8 characters, 655 // independent of mblen(). 656 if (enc_utf8) 657 n = utf8len_tab[i]; 658 else if (enc_dbcs == 0) 659 n = 1; 660 else 661 { 662 #if defined(MSWIN) || defined(WIN32UNIX) 663 // enc_dbcs is set by setting 'fileencoding'. It becomes a Windows 664 // CodePage identifier, which we can pass directly in to Windows 665 // API 666 n = IsDBCSLeadByteEx(enc_dbcs, (WINBYTE)i) ? 2 : 1; 667 #else 668 # if defined(__amigaos4__) || defined(__ANDROID__) || \ 669 !(defined(HAVE_MBLEN) || defined(X_LOCALE)) 670 /* 671 * if mblen() is not available, character which MSB is turned on 672 * are treated as leading byte character. (note : This assumption 673 * is not always true.) 674 */ 675 n = (i & 0x80) ? 2 : 1; 676 # else 677 char buf[MB_MAXBYTES + 1]; 678 679 if (i == NUL) // just in case mblen() can't handle "" 680 n = 1; 681 else 682 { 683 buf[0] = i; 684 buf[1] = 0; 685 # ifdef LEN_FROM_CONV 686 if (vimconv.vc_type != CONV_NONE) 687 { 688 /* 689 * string_convert() should fail when converting the first 690 * byte of a double-byte character. 691 */ 692 p = string_convert(&vimconv, (char_u *)buf, NULL); 693 if (p != NULL) 694 { 695 vim_free(p); 696 n = 1; 697 } 698 else 699 n = 2; 700 } 701 else 702 # endif 703 { 704 /* 705 * mblen() should return -1 for invalid (means the leading 706 * multibyte) character. However there are some platforms 707 * where mblen() returns 0 for invalid character. 708 * Therefore, following condition includes 0. 709 */ 710 vim_ignored = mblen(NULL, 0); // First reset the state. 711 if (mblen(buf, (size_t)1) <= 0) 712 n = 2; 713 else 714 n = 1; 715 } 716 } 717 # endif 718 #endif 719 } 720 721 mb_bytelen_tab[i] = n; 722 } 723 724 #ifdef LEN_FROM_CONV 725 convert_setup(&vimconv, NULL, NULL); 726 #endif 727 728 // The cell width depends on the type of multi-byte characters. 729 (void)init_chartab(); 730 731 // When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] 732 screenalloc(FALSE); 733 734 // When using Unicode, set default for 'fileencodings'. 735 if (enc_utf8 && !option_was_set((char_u *)"fencs")) 736 set_fencs_unicode(); 737 738 #if defined(HAVE_BIND_TEXTDOMAIN_CODESET) && defined(FEAT_GETTEXT) 739 // GNU gettext 0.10.37 supports this feature: set the codeset used for 740 // translated messages independently from the current locale. 741 (void)bind_textdomain_codeset(VIMPACKAGE, 742 enc_utf8 ? "utf-8" : (char *)p_enc); 743 #endif 744 745 #ifdef MSWIN 746 // When changing 'encoding' while starting up, then convert the command 747 // line arguments from the active codepage to 'encoding'. 748 if (starting != 0) 749 fix_arg_enc(); 750 #endif 751 752 // Fire an autocommand to let people do custom font setup. This must be 753 // after Vim has been setup for the new encoding. 754 apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf); 755 756 #ifdef FEAT_SPELL 757 // Need to reload spell dictionaries 758 spell_reload(); 759 #endif 760 761 return NULL; 762 } 763 764 /* 765 * Return the size of the BOM for the current buffer: 766 * 0 - no BOM 767 * 2 - UCS-2 or UTF-16 BOM 768 * 4 - UCS-4 BOM 769 * 3 - UTF-8 BOM 770 */ 771 int 772 bomb_size(void) 773 { 774 int n = 0; 775 776 if (curbuf->b_p_bomb && !curbuf->b_p_bin) 777 { 778 if (*curbuf->b_p_fenc == NUL) 779 { 780 if (enc_utf8) 781 { 782 if (enc_unicode != 0) 783 n = enc_unicode; 784 else 785 n = 3; 786 } 787 } 788 else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0) 789 n = 3; 790 else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0 791 || STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0) 792 n = 2; 793 else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0) 794 n = 4; 795 } 796 return n; 797 } 798 799 #if defined(FEAT_QUICKFIX) || defined(PROTO) 800 /* 801 * Remove all BOM from "s" by moving remaining text. 802 */ 803 void 804 remove_bom(char_u *s) 805 { 806 if (enc_utf8) 807 { 808 char_u *p = s; 809 810 while ((p = vim_strbyte(p, 0xef)) != NULL) 811 { 812 if (p[1] == 0xbb && p[2] == 0xbf) 813 STRMOVE(p, p + 3); 814 else 815 ++p; 816 } 817 } 818 } 819 #endif 820 821 /* 822 * Get class of pointer: 823 * 0 for blank or NUL 824 * 1 for punctuation 825 * 2 for an (ASCII) word character 826 * >2 for other word characters 827 */ 828 int 829 mb_get_class(char_u *p) 830 { 831 return mb_get_class_buf(p, curbuf); 832 } 833 834 int 835 mb_get_class_buf(char_u *p, buf_T *buf) 836 { 837 if (MB_BYTE2LEN(p[0]) == 1) 838 { 839 if (p[0] == NUL || VIM_ISWHITE(p[0])) 840 return 0; 841 if (vim_iswordc_buf(p[0], buf)) 842 return 2; 843 return 1; 844 } 845 if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL) 846 return dbcs_class(p[0], p[1]); 847 if (enc_utf8) 848 return utf_class_buf(utf_ptr2char(p), buf); 849 return 0; 850 } 851 852 /* 853 * Get class of a double-byte character. This always returns 3 or bigger. 854 * TODO: Should return 1 for punctuation. 855 */ 856 int 857 dbcs_class(unsigned lead, unsigned trail) 858 { 859 switch (enc_dbcs) 860 { 861 // please add classify routine for your language in here 862 863 case DBCS_JPNU: // ? 864 case DBCS_JPN: 865 { 866 // JIS code classification 867 unsigned char lb = lead; 868 unsigned char tb = trail; 869 870 // convert process code to JIS 871 # if defined(MSWIN) || defined(WIN32UNIX) || defined(MACOS_X) 872 // process code is SJIS 873 if (lb <= 0x9f) 874 lb = (lb - 0x81) * 2 + 0x21; 875 else 876 lb = (lb - 0xc1) * 2 + 0x21; 877 if (tb <= 0x7e) 878 tb -= 0x1f; 879 else if (tb <= 0x9e) 880 tb -= 0x20; 881 else 882 { 883 tb -= 0x7e; 884 lb += 1; 885 } 886 # else 887 /* 888 * XXX: Code page identification can not use with all 889 * system! So, some other encoding information 890 * will be needed. 891 * In japanese: SJIS,EUC,UNICODE,(JIS) 892 * Note that JIS-code system don't use as 893 * process code in most system because it uses 894 * escape sequences(JIS is context depend encoding). 895 */ 896 // assume process code is JAPANESE-EUC 897 lb &= 0x7f; 898 tb &= 0x7f; 899 # endif 900 // exceptions 901 switch (lb << 8 | tb) 902 { 903 case 0x2121: // ZENKAKU space 904 return 0; 905 case 0x2122: // TOU-TEN (Japanese comma) 906 case 0x2123: // KU-TEN (Japanese period) 907 case 0x2124: // ZENKAKU comma 908 case 0x2125: // ZENKAKU period 909 return 1; 910 case 0x213c: // prolongedsound handled as KATAKANA 911 return 13; 912 } 913 // sieved by KU code 914 switch (lb) 915 { 916 case 0x21: 917 case 0x22: 918 // special symbols 919 return 10; 920 case 0x23: 921 // alphanumeric 922 return 11; 923 case 0x24: 924 // hiragana 925 return 12; 926 case 0x25: 927 // katakana 928 return 13; 929 case 0x26: 930 // greek 931 return 14; 932 case 0x27: 933 // russian 934 return 15; 935 case 0x28: 936 // lines 937 return 16; 938 default: 939 // kanji 940 return 17; 941 } 942 } 943 944 case DBCS_KORU: // ? 945 case DBCS_KOR: 946 { 947 // KS code classification 948 unsigned char c1 = lead; 949 unsigned char c2 = trail; 950 951 /* 952 * 20 : Hangul 953 * 21 : Hanja 954 * 22 : Symbols 955 * 23 : Alphanumeric/Roman Letter (Full width) 956 * 24 : Hangul Letter(Alphabet) 957 * 25 : Roman Numeral/Greek Letter 958 * 26 : Box Drawings 959 * 27 : Unit Symbols 960 * 28 : Circled/Parenthesized Letter 961 * 29 : Hiragana/Katakana 962 * 30 : Cyrillic Letter 963 */ 964 965 if (c1 >= 0xB0 && c1 <= 0xC8) 966 // Hangul 967 return 20; 968 #if defined(MSWIN) || defined(WIN32UNIX) 969 else if (c1 <= 0xA0 || c2 <= 0xA0) 970 // Extended Hangul Region : MS UHC(Unified Hangul Code) 971 // c1: 0x81-0xA0 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xFE 972 // c1: 0xA1-0xC6 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xA0 973 return 20; 974 #endif 975 976 else if (c1 >= 0xCA && c1 <= 0xFD) 977 // Hanja 978 return 21; 979 else switch (c1) 980 { 981 case 0xA1: 982 case 0xA2: 983 // Symbols 984 return 22; 985 case 0xA3: 986 // Alphanumeric 987 return 23; 988 case 0xA4: 989 // Hangul Letter(Alphabet) 990 return 24; 991 case 0xA5: 992 // Roman Numeral/Greek Letter 993 return 25; 994 case 0xA6: 995 // Box Drawings 996 return 26; 997 case 0xA7: 998 // Unit Symbols 999 return 27; 1000 case 0xA8: 1001 case 0xA9: 1002 if (c2 <= 0xAF) 1003 return 25; // Roman Letter 1004 else if (c2 >= 0xF6) 1005 return 22; // Symbols 1006 else 1007 // Circled/Parenthesized Letter 1008 return 28; 1009 case 0xAA: 1010 case 0xAB: 1011 // Hiragana/Katakana 1012 return 29; 1013 case 0xAC: 1014 // Cyrillic Letter 1015 return 30; 1016 } 1017 } 1018 default: 1019 break; 1020 } 1021 return 3; 1022 } 1023 1024 /* 1025 * mb_char2len() function pointer. 1026 * Return length in bytes of character "c". 1027 * Returns 1 for a single-byte character. 1028 */ 1029 int 1030 latin_char2len(int c UNUSED) 1031 { 1032 return 1; 1033 } 1034 1035 static int 1036 dbcs_char2len( 1037 int c) 1038 { 1039 if (c >= 0x100) 1040 return 2; 1041 return 1; 1042 } 1043 1044 /* 1045 * mb_char2bytes() function pointer. 1046 * Convert a character to its bytes. 1047 * Returns the length in bytes. 1048 */ 1049 int 1050 latin_char2bytes(int c, char_u *buf) 1051 { 1052 buf[0] = c; 1053 return 1; 1054 } 1055 1056 static int 1057 dbcs_char2bytes(int c, char_u *buf) 1058 { 1059 if (c >= 0x100) 1060 { 1061 buf[0] = (unsigned)c >> 8; 1062 buf[1] = c; 1063 // Never use a NUL byte, it causes lots of trouble. It's an invalid 1064 // character anyway. 1065 if (buf[1] == NUL) 1066 buf[1] = '\n'; 1067 return 2; 1068 } 1069 buf[0] = c; 1070 return 1; 1071 } 1072 1073 /* 1074 * mb_ptr2len() function pointer. 1075 * Get byte length of character at "*p" but stop at a NUL. 1076 * For UTF-8 this includes following composing characters. 1077 * Returns 0 when *p is NUL. 1078 */ 1079 int 1080 latin_ptr2len(char_u *p) 1081 { 1082 return MB_BYTE2LEN(*p); 1083 } 1084 1085 static int 1086 dbcs_ptr2len( 1087 char_u *p) 1088 { 1089 int len; 1090 1091 // Check if second byte is not missing. 1092 len = MB_BYTE2LEN(*p); 1093 if (len == 2 && p[1] == NUL) 1094 len = 1; 1095 return len; 1096 } 1097 1098 /* 1099 * mb_ptr2len_len() function pointer. 1100 * Like mb_ptr2len(), but limit to read "size" bytes. 1101 * Returns 0 for an empty string. 1102 * Returns 1 for an illegal char or an incomplete byte sequence. 1103 */ 1104 int 1105 latin_ptr2len_len(char_u *p, int size) 1106 { 1107 if (size < 1 || *p == NUL) 1108 return 0; 1109 return 1; 1110 } 1111 1112 static int 1113 dbcs_ptr2len_len(char_u *p, int size) 1114 { 1115 int len; 1116 1117 if (size < 1 || *p == NUL) 1118 return 0; 1119 if (size == 1) 1120 return 1; 1121 // Check that second byte is not missing. 1122 len = MB_BYTE2LEN(*p); 1123 if (len == 2 && p[1] == NUL) 1124 len = 1; 1125 return len; 1126 } 1127 1128 struct interval 1129 { 1130 long first; 1131 long last; 1132 }; 1133 1134 /* 1135 * Return TRUE if "c" is in "table[size / sizeof(struct interval)]". 1136 */ 1137 static int 1138 intable(struct interval *table, size_t size, int c) 1139 { 1140 int mid, bot, top; 1141 1142 // first quick check for Latin1 etc. characters 1143 if (c < table[0].first) 1144 return FALSE; 1145 1146 // binary search in table 1147 bot = 0; 1148 top = (int)(size / sizeof(struct interval) - 1); 1149 while (top >= bot) 1150 { 1151 mid = (bot + top) / 2; 1152 if (table[mid].last < c) 1153 bot = mid + 1; 1154 else if (table[mid].first > c) 1155 top = mid - 1; 1156 else 1157 return TRUE; 1158 } 1159 return FALSE; 1160 } 1161 1162 // Sorted list of non-overlapping intervals of East Asian Ambiguous 1163 // characters, generated with ../runtime/tools/unicode.vim. 1164 static struct interval ambiguous[] = 1165 { 1166 {0x00a1, 0x00a1}, 1167 {0x00a4, 0x00a4}, 1168 {0x00a7, 0x00a8}, 1169 {0x00aa, 0x00aa}, 1170 {0x00ad, 0x00ae}, 1171 {0x00b0, 0x00b4}, 1172 {0x00b6, 0x00ba}, 1173 {0x00bc, 0x00bf}, 1174 {0x00c6, 0x00c6}, 1175 {0x00d0, 0x00d0}, 1176 {0x00d7, 0x00d8}, 1177 {0x00de, 0x00e1}, 1178 {0x00e6, 0x00e6}, 1179 {0x00e8, 0x00ea}, 1180 {0x00ec, 0x00ed}, 1181 {0x00f0, 0x00f0}, 1182 {0x00f2, 0x00f3}, 1183 {0x00f7, 0x00fa}, 1184 {0x00fc, 0x00fc}, 1185 {0x00fe, 0x00fe}, 1186 {0x0101, 0x0101}, 1187 {0x0111, 0x0111}, 1188 {0x0113, 0x0113}, 1189 {0x011b, 0x011b}, 1190 {0x0126, 0x0127}, 1191 {0x012b, 0x012b}, 1192 {0x0131, 0x0133}, 1193 {0x0138, 0x0138}, 1194 {0x013f, 0x0142}, 1195 {0x0144, 0x0144}, 1196 {0x0148, 0x014b}, 1197 {0x014d, 0x014d}, 1198 {0x0152, 0x0153}, 1199 {0x0166, 0x0167}, 1200 {0x016b, 0x016b}, 1201 {0x01ce, 0x01ce}, 1202 {0x01d0, 0x01d0}, 1203 {0x01d2, 0x01d2}, 1204 {0x01d4, 0x01d4}, 1205 {0x01d6, 0x01d6}, 1206 {0x01d8, 0x01d8}, 1207 {0x01da, 0x01da}, 1208 {0x01dc, 0x01dc}, 1209 {0x0251, 0x0251}, 1210 {0x0261, 0x0261}, 1211 {0x02c4, 0x02c4}, 1212 {0x02c7, 0x02c7}, 1213 {0x02c9, 0x02cb}, 1214 {0x02cd, 0x02cd}, 1215 {0x02d0, 0x02d0}, 1216 {0x02d8, 0x02db}, 1217 {0x02dd, 0x02dd}, 1218 {0x02df, 0x02df}, 1219 {0x0300, 0x036f}, 1220 {0x0391, 0x03a1}, 1221 {0x03a3, 0x03a9}, 1222 {0x03b1, 0x03c1}, 1223 {0x03c3, 0x03c9}, 1224 {0x0401, 0x0401}, 1225 {0x0410, 0x044f}, 1226 {0x0451, 0x0451}, 1227 {0x2010, 0x2010}, 1228 {0x2013, 0x2016}, 1229 {0x2018, 0x2019}, 1230 {0x201c, 0x201d}, 1231 {0x2020, 0x2022}, 1232 {0x2024, 0x2027}, 1233 {0x2030, 0x2030}, 1234 {0x2032, 0x2033}, 1235 {0x2035, 0x2035}, 1236 {0x203b, 0x203b}, 1237 {0x203e, 0x203e}, 1238 {0x2074, 0x2074}, 1239 {0x207f, 0x207f}, 1240 {0x2081, 0x2084}, 1241 {0x20ac, 0x20ac}, 1242 {0x2103, 0x2103}, 1243 {0x2105, 0x2105}, 1244 {0x2109, 0x2109}, 1245 {0x2113, 0x2113}, 1246 {0x2116, 0x2116}, 1247 {0x2121, 0x2122}, 1248 {0x2126, 0x2126}, 1249 {0x212b, 0x212b}, 1250 {0x2153, 0x2154}, 1251 {0x215b, 0x215e}, 1252 {0x2160, 0x216b}, 1253 {0x2170, 0x2179}, 1254 {0x2189, 0x2189}, 1255 {0x2190, 0x2199}, 1256 {0x21b8, 0x21b9}, 1257 {0x21d2, 0x21d2}, 1258 {0x21d4, 0x21d4}, 1259 {0x21e7, 0x21e7}, 1260 {0x2200, 0x2200}, 1261 {0x2202, 0x2203}, 1262 {0x2207, 0x2208}, 1263 {0x220b, 0x220b}, 1264 {0x220f, 0x220f}, 1265 {0x2211, 0x2211}, 1266 {0x2215, 0x2215}, 1267 {0x221a, 0x221a}, 1268 {0x221d, 0x2220}, 1269 {0x2223, 0x2223}, 1270 {0x2225, 0x2225}, 1271 {0x2227, 0x222c}, 1272 {0x222e, 0x222e}, 1273 {0x2234, 0x2237}, 1274 {0x223c, 0x223d}, 1275 {0x2248, 0x2248}, 1276 {0x224c, 0x224c}, 1277 {0x2252, 0x2252}, 1278 {0x2260, 0x2261}, 1279 {0x2264, 0x2267}, 1280 {0x226a, 0x226b}, 1281 {0x226e, 0x226f}, 1282 {0x2282, 0x2283}, 1283 {0x2286, 0x2287}, 1284 {0x2295, 0x2295}, 1285 {0x2299, 0x2299}, 1286 {0x22a5, 0x22a5}, 1287 {0x22bf, 0x22bf}, 1288 {0x2312, 0x2312}, 1289 {0x2460, 0x24e9}, 1290 {0x24eb, 0x254b}, 1291 {0x2550, 0x2573}, 1292 {0x2580, 0x258f}, 1293 {0x2592, 0x2595}, 1294 {0x25a0, 0x25a1}, 1295 {0x25a3, 0x25a9}, 1296 {0x25b2, 0x25b3}, 1297 {0x25b6, 0x25b7}, 1298 {0x25bc, 0x25bd}, 1299 {0x25c0, 0x25c1}, 1300 {0x25c6, 0x25c8}, 1301 {0x25cb, 0x25cb}, 1302 {0x25ce, 0x25d1}, 1303 {0x25e2, 0x25e5}, 1304 {0x25ef, 0x25ef}, 1305 {0x2605, 0x2606}, 1306 {0x2609, 0x2609}, 1307 {0x260e, 0x260f}, 1308 {0x261c, 0x261c}, 1309 {0x261e, 0x261e}, 1310 {0x2640, 0x2640}, 1311 {0x2642, 0x2642}, 1312 {0x2660, 0x2661}, 1313 {0x2663, 0x2665}, 1314 {0x2667, 0x266a}, 1315 {0x266c, 0x266d}, 1316 {0x266f, 0x266f}, 1317 {0x269e, 0x269f}, 1318 {0x26bf, 0x26bf}, 1319 {0x26c6, 0x26cd}, 1320 {0x26cf, 0x26d3}, 1321 {0x26d5, 0x26e1}, 1322 {0x26e3, 0x26e3}, 1323 {0x26e8, 0x26e9}, 1324 {0x26eb, 0x26f1}, 1325 {0x26f4, 0x26f4}, 1326 {0x26f6, 0x26f9}, 1327 {0x26fb, 0x26fc}, 1328 {0x26fe, 0x26ff}, 1329 {0x273d, 0x273d}, 1330 {0x2776, 0x277f}, 1331 {0x2b56, 0x2b59}, 1332 {0x3248, 0x324f}, 1333 {0xe000, 0xf8ff}, 1334 {0xfe00, 0xfe0f}, 1335 {0xfffd, 0xfffd}, 1336 {0x1f100, 0x1f10a}, 1337 {0x1f110, 0x1f12d}, 1338 {0x1f130, 0x1f169}, 1339 {0x1f170, 0x1f18d}, 1340 {0x1f18f, 0x1f190}, 1341 {0x1f19b, 0x1f1ac}, 1342 {0xe0100, 0xe01ef}, 1343 {0xf0000, 0xffffd}, 1344 {0x100000, 0x10fffd} 1345 }; 1346 1347 #if defined(FEAT_TERMINAL) || defined(PROTO) 1348 /* 1349 * utf_char2cells() with different argument type for libvterm. 1350 */ 1351 int 1352 utf_uint2cells(UINT32_T c) 1353 { 1354 if (c >= 0x100 && utf_iscomposing((int)c)) 1355 return 0; 1356 return utf_char2cells((int)c); 1357 } 1358 #endif 1359 1360 /* 1361 * For UTF-8 character "c" return 2 for a double-width character, 1 for others. 1362 * Returns 4 or 6 for an unprintable character. 1363 * Is only correct for characters >= 0x80. 1364 * When p_ambw is "double", return 2 for a character with East Asian Width 1365 * class 'A'(mbiguous). 1366 */ 1367 int 1368 utf_char2cells(int c) 1369 { 1370 // Sorted list of non-overlapping intervals of East Asian double width 1371 // characters, generated with ../runtime/tools/unicode.vim. 1372 static struct interval doublewidth[] = 1373 { 1374 {0x1100, 0x115f}, 1375 {0x231a, 0x231b}, 1376 {0x2329, 0x232a}, 1377 {0x23e9, 0x23ec}, 1378 {0x23f0, 0x23f0}, 1379 {0x23f3, 0x23f3}, 1380 {0x25fd, 0x25fe}, 1381 {0x2614, 0x2615}, 1382 {0x2648, 0x2653}, 1383 {0x267f, 0x267f}, 1384 {0x2693, 0x2693}, 1385 {0x26a1, 0x26a1}, 1386 {0x26aa, 0x26ab}, 1387 {0x26bd, 0x26be}, 1388 {0x26c4, 0x26c5}, 1389 {0x26ce, 0x26ce}, 1390 {0x26d4, 0x26d4}, 1391 {0x26ea, 0x26ea}, 1392 {0x26f2, 0x26f3}, 1393 {0x26f5, 0x26f5}, 1394 {0x26fa, 0x26fa}, 1395 {0x26fd, 0x26fd}, 1396 {0x2705, 0x2705}, 1397 {0x270a, 0x270b}, 1398 {0x2728, 0x2728}, 1399 {0x274c, 0x274c}, 1400 {0x274e, 0x274e}, 1401 {0x2753, 0x2755}, 1402 {0x2757, 0x2757}, 1403 {0x2795, 0x2797}, 1404 {0x27b0, 0x27b0}, 1405 {0x27bf, 0x27bf}, 1406 {0x2b1b, 0x2b1c}, 1407 {0x2b50, 0x2b50}, 1408 {0x2b55, 0x2b55}, 1409 {0x2e80, 0x2e99}, 1410 {0x2e9b, 0x2ef3}, 1411 {0x2f00, 0x2fd5}, 1412 {0x2ff0, 0x2ffb}, 1413 {0x3000, 0x303e}, 1414 {0x3041, 0x3096}, 1415 {0x3099, 0x30ff}, 1416 {0x3105, 0x312f}, 1417 {0x3131, 0x318e}, 1418 {0x3190, 0x31e3}, 1419 {0x31f0, 0x321e}, 1420 {0x3220, 0x3247}, 1421 {0x3250, 0x4dbf}, 1422 {0x4e00, 0xa48c}, 1423 {0xa490, 0xa4c6}, 1424 {0xa960, 0xa97c}, 1425 {0xac00, 0xd7a3}, 1426 {0xf900, 0xfaff}, 1427 {0xfe10, 0xfe19}, 1428 {0xfe30, 0xfe52}, 1429 {0xfe54, 0xfe66}, 1430 {0xfe68, 0xfe6b}, 1431 {0xff01, 0xff60}, 1432 {0xffe0, 0xffe6}, 1433 {0x16fe0, 0x16fe3}, 1434 {0x16ff0, 0x16ff1}, 1435 {0x17000, 0x187f7}, 1436 {0x18800, 0x18cd5}, 1437 {0x18d00, 0x18d08}, 1438 {0x1b000, 0x1b11e}, 1439 {0x1b150, 0x1b152}, 1440 {0x1b164, 0x1b167}, 1441 {0x1b170, 0x1b2fb}, 1442 {0x1f004, 0x1f004}, 1443 {0x1f0cf, 0x1f0cf}, 1444 {0x1f18e, 0x1f18e}, 1445 {0x1f191, 0x1f19a}, 1446 {0x1f200, 0x1f202}, 1447 {0x1f210, 0x1f23b}, 1448 {0x1f240, 0x1f248}, 1449 {0x1f250, 0x1f251}, 1450 {0x1f260, 0x1f265}, 1451 {0x1f300, 0x1f320}, 1452 {0x1f32d, 0x1f335}, 1453 {0x1f337, 0x1f37c}, 1454 {0x1f37e, 0x1f393}, 1455 {0x1f3a0, 0x1f3ca}, 1456 {0x1f3cf, 0x1f3d3}, 1457 {0x1f3e0, 0x1f3f0}, 1458 {0x1f3f4, 0x1f3f4}, 1459 {0x1f3f8, 0x1f43e}, 1460 {0x1f440, 0x1f440}, 1461 {0x1f442, 0x1f4fc}, 1462 {0x1f4ff, 0x1f53d}, 1463 {0x1f54b, 0x1f54e}, 1464 {0x1f550, 0x1f567}, 1465 {0x1f57a, 0x1f57a}, 1466 {0x1f595, 0x1f596}, 1467 {0x1f5a4, 0x1f5a4}, 1468 {0x1f5fb, 0x1f64f}, 1469 {0x1f680, 0x1f6c5}, 1470 {0x1f6cc, 0x1f6cc}, 1471 {0x1f6d0, 0x1f6d2}, 1472 {0x1f6d5, 0x1f6d7}, 1473 {0x1f6eb, 0x1f6ec}, 1474 {0x1f6f4, 0x1f6fc}, 1475 {0x1f7e0, 0x1f7eb}, 1476 {0x1f90c, 0x1f93a}, 1477 {0x1f93c, 0x1f945}, 1478 {0x1f947, 0x1f978}, 1479 {0x1f97a, 0x1f9cb}, 1480 {0x1f9cd, 0x1f9ff}, 1481 {0x1fa70, 0x1fa74}, 1482 {0x1fa78, 0x1fa7a}, 1483 {0x1fa80, 0x1fa86}, 1484 {0x1fa90, 0x1faa8}, 1485 {0x1fab0, 0x1fab6}, 1486 {0x1fac0, 0x1fac2}, 1487 {0x1fad0, 0x1fad6}, 1488 {0x20000, 0x2fffd}, 1489 {0x30000, 0x3fffd} 1490 }; 1491 1492 // Sorted list of non-overlapping intervals of Emoji characters that don't 1493 // have ambiguous or double width, 1494 // based on http://unicode.org/emoji/charts/emoji-list.html 1495 static struct interval emoji_wide[] = 1496 { 1497 {0x23ed, 0x23ef}, 1498 {0x23f1, 0x23f2}, 1499 {0x23f8, 0x23fa}, 1500 {0x24c2, 0x24c2}, 1501 {0x261d, 0x261d}, 1502 {0x26c8, 0x26c8}, 1503 {0x26cf, 0x26cf}, 1504 {0x26d1, 0x26d1}, 1505 {0x26d3, 0x26d3}, 1506 {0x26e9, 0x26e9}, 1507 {0x26f0, 0x26f1}, 1508 {0x26f7, 0x26f9}, 1509 {0x270c, 0x270d}, 1510 {0x2934, 0x2935}, 1511 {0x1f170, 0x1f189}, 1512 {0x1f1e6, 0x1f1ff}, 1513 {0x1f321, 0x1f321}, 1514 {0x1f324, 0x1f32c}, 1515 {0x1f336, 0x1f336}, 1516 {0x1f37d, 0x1f37d}, 1517 {0x1f396, 0x1f397}, 1518 {0x1f399, 0x1f39b}, 1519 {0x1f39e, 0x1f39f}, 1520 {0x1f3cb, 0x1f3ce}, 1521 {0x1f3d4, 0x1f3df}, 1522 {0x1f3f3, 0x1f3f5}, 1523 {0x1f3f7, 0x1f3f7}, 1524 {0x1f43f, 0x1f43f}, 1525 {0x1f441, 0x1f441}, 1526 {0x1f4fd, 0x1f4fd}, 1527 {0x1f549, 0x1f54a}, 1528 {0x1f56f, 0x1f570}, 1529 {0x1f573, 0x1f579}, 1530 {0x1f587, 0x1f587}, 1531 {0x1f58a, 0x1f58d}, 1532 {0x1f590, 0x1f590}, 1533 {0x1f5a5, 0x1f5a5}, 1534 {0x1f5a8, 0x1f5a8}, 1535 {0x1f5b1, 0x1f5b2}, 1536 {0x1f5bc, 0x1f5bc}, 1537 {0x1f5c2, 0x1f5c4}, 1538 {0x1f5d1, 0x1f5d3}, 1539 {0x1f5dc, 0x1f5de}, 1540 {0x1f5e1, 0x1f5e1}, 1541 {0x1f5e3, 0x1f5e3}, 1542 {0x1f5e8, 0x1f5e8}, 1543 {0x1f5ef, 0x1f5ef}, 1544 {0x1f5f3, 0x1f5f3}, 1545 {0x1f5fa, 0x1f5fa}, 1546 {0x1f6cb, 0x1f6cf}, 1547 {0x1f6e0, 0x1f6e5}, 1548 {0x1f6e9, 0x1f6e9}, 1549 {0x1f6f0, 0x1f6f0}, 1550 {0x1f6f3, 0x1f6f3} 1551 1552 #ifdef MACOS_X 1553 // Include SF Symbols characters, which should be rendered as 1554 // double-width. All of them are in the Supplementary Private Use 1555 // Area-B range. The exact range was determined by downloading the "SF 1556 // Symbols" app from Apple, and then selecting all symbols, copying 1557 // them out, and inspecting the unicode values of them. 1558 , {0x100000, 0x100d7f} 1559 #endif 1560 }; 1561 1562 if (c >= 0x100) 1563 { 1564 #if defined(FEAT_EVAL) || defined(USE_WCHAR_FUNCTIONS) 1565 int n; 1566 #endif 1567 1568 #ifdef FEAT_EVAL 1569 n = cw_value(c); 1570 if (n != 0) 1571 return n; 1572 #endif 1573 1574 #ifdef USE_WCHAR_FUNCTIONS 1575 /* 1576 * Assume the library function wcwidth() works better than our own 1577 * stuff. It should return 1 for ambiguous width chars! 1578 */ 1579 n = wcwidth(c); 1580 1581 if (n < 0) 1582 return 6; // unprintable, displays <xxxx> 1583 if (n > 1) 1584 return n; 1585 #else 1586 if (!utf_printable(c)) 1587 return 6; // unprintable, displays <xxxx> 1588 if (intable(doublewidth, sizeof(doublewidth), c)) 1589 return 2; 1590 #endif 1591 if (p_emoji && intable(emoji_wide, sizeof(emoji_wide), c)) 1592 return 2; 1593 } 1594 1595 // Characters below 0x100 are influenced by 'isprint' option 1596 else if (c >= 0x80 && !vim_isprintc(c)) 1597 return 4; // unprintable, displays <xx> 1598 1599 if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c)) 1600 return 2; 1601 1602 return 1; 1603 } 1604 1605 /* 1606 * mb_ptr2cells() function pointer. 1607 * Return the number of display cells character at "*p" occupies. 1608 * This doesn't take care of unprintable characters, use ptr2cells() for that. 1609 */ 1610 int 1611 latin_ptr2cells(char_u *p UNUSED) 1612 { 1613 return 1; 1614 } 1615 1616 int 1617 utf_ptr2cells( 1618 char_u *p) 1619 { 1620 int c; 1621 1622 // Need to convert to a character number. 1623 if (*p >= 0x80) 1624 { 1625 c = utf_ptr2char(p); 1626 // An illegal byte is displayed as <xx>. 1627 if (utf_ptr2len(p) == 1 || c == NUL) 1628 return 4; 1629 // If the char is ASCII it must be an overlong sequence. 1630 if (c < 0x80) 1631 return char2cells(c); 1632 return utf_char2cells(c); 1633 } 1634 return 1; 1635 } 1636 1637 int 1638 dbcs_ptr2cells(char_u *p) 1639 { 1640 // Number of cells is equal to number of bytes, except for euc-jp when 1641 // the first byte is 0x8e. 1642 if (enc_dbcs == DBCS_JPNU && *p == 0x8e) 1643 return 1; 1644 return MB_BYTE2LEN(*p); 1645 } 1646 1647 /* 1648 * mb_ptr2cells_len() function pointer. 1649 * Like mb_ptr2cells(), but limit string length to "size". 1650 * For an empty string or truncated character returns 1. 1651 */ 1652 int 1653 latin_ptr2cells_len(char_u *p UNUSED, int size UNUSED) 1654 { 1655 return 1; 1656 } 1657 1658 static int 1659 utf_ptr2cells_len(char_u *p, int size) 1660 { 1661 int c; 1662 1663 // Need to convert to a wide character. 1664 if (size > 0 && *p >= 0x80) 1665 { 1666 if (utf_ptr2len_len(p, size) < utf8len_tab[*p]) 1667 return 1; // truncated 1668 c = utf_ptr2char(p); 1669 // An illegal byte is displayed as <xx>. 1670 if (utf_ptr2len(p) == 1 || c == NUL) 1671 return 4; 1672 // If the char is ASCII it must be an overlong sequence. 1673 if (c < 0x80) 1674 return char2cells(c); 1675 return utf_char2cells(c); 1676 } 1677 return 1; 1678 } 1679 1680 static int 1681 dbcs_ptr2cells_len(char_u *p, int size) 1682 { 1683 // Number of cells is equal to number of bytes, except for euc-jp when 1684 // the first byte is 0x8e. 1685 if (size <= 1 || (enc_dbcs == DBCS_JPNU && *p == 0x8e)) 1686 return 1; 1687 return MB_BYTE2LEN(*p); 1688 } 1689 1690 /* 1691 * mb_char2cells() function pointer. 1692 * Return the number of display cells character "c" occupies. 1693 * Only takes care of multi-byte chars, not "^C" and such. 1694 */ 1695 int 1696 latin_char2cells(int c UNUSED) 1697 { 1698 return 1; 1699 } 1700 1701 static int 1702 dbcs_char2cells(int c) 1703 { 1704 // Number of cells is equal to number of bytes, except for euc-jp when 1705 // the first byte is 0x8e. 1706 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) 1707 return 1; 1708 // use the first byte 1709 return MB_BYTE2LEN((unsigned)c >> 8); 1710 } 1711 1712 /* 1713 * Return the number of cells occupied by string "p". 1714 * Stop at a NUL character. When "len" >= 0 stop at character "p[len]". 1715 */ 1716 int 1717 mb_string2cells(char_u *p, int len) 1718 { 1719 int i; 1720 int clen = 0; 1721 1722 for (i = 0; (len < 0 || i < len) && p[i] != NUL; i += (*mb_ptr2len)(p + i)) 1723 clen += (*mb_ptr2cells)(p + i); 1724 return clen; 1725 } 1726 1727 /* 1728 * mb_off2cells() function pointer. 1729 * Return number of display cells for char at ScreenLines[off]. 1730 * We make sure that the offset used is less than "max_off". 1731 */ 1732 int 1733 latin_off2cells(unsigned off UNUSED, unsigned max_off UNUSED) 1734 { 1735 return 1; 1736 } 1737 1738 int 1739 dbcs_off2cells(unsigned off, unsigned max_off) 1740 { 1741 // never check beyond end of the line 1742 if (off >= max_off) 1743 return 1; 1744 1745 // Number of cells is equal to number of bytes, except for euc-jp when 1746 // the first byte is 0x8e. 1747 if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e) 1748 return 1; 1749 return MB_BYTE2LEN(ScreenLines[off]); 1750 } 1751 1752 int 1753 utf_off2cells(unsigned off, unsigned max_off) 1754 { 1755 return (off + 1 < max_off && ScreenLines[off + 1] == 0) ? 2 : 1; 1756 } 1757 1758 /* 1759 * mb_ptr2char() function pointer. 1760 * Convert a byte sequence into a character. 1761 */ 1762 int 1763 latin_ptr2char(char_u *p) 1764 { 1765 return *p; 1766 } 1767 1768 static int 1769 dbcs_ptr2char(char_u *p) 1770 { 1771 if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL) 1772 return (p[0] << 8) + p[1]; 1773 return *p; 1774 } 1775 1776 /* 1777 * Convert a UTF-8 byte sequence to a character number. 1778 * If the sequence is illegal or truncated by a NUL the first byte is 1779 * returned. 1780 * For an overlong sequence this may return zero. 1781 * Does not include composing characters, of course. 1782 */ 1783 int 1784 utf_ptr2char(char_u *p) 1785 { 1786 int len; 1787 1788 if (p[0] < 0x80) // be quick for ASCII 1789 return p[0]; 1790 1791 len = utf8len_tab_zero[p[0]]; 1792 if (len > 1 && (p[1] & 0xc0) == 0x80) 1793 { 1794 if (len == 2) 1795 return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f); 1796 if ((p[2] & 0xc0) == 0x80) 1797 { 1798 if (len == 3) 1799 return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6) 1800 + (p[2] & 0x3f); 1801 if ((p[3] & 0xc0) == 0x80) 1802 { 1803 if (len == 4) 1804 return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12) 1805 + ((p[2] & 0x3f) << 6) + (p[3] & 0x3f); 1806 if ((p[4] & 0xc0) == 0x80) 1807 { 1808 if (len == 5) 1809 return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18) 1810 + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6) 1811 + (p[4] & 0x3f); 1812 if ((p[5] & 0xc0) == 0x80 && len == 6) 1813 return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24) 1814 + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12) 1815 + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f); 1816 } 1817 } 1818 } 1819 } 1820 // Illegal value, just return the first byte 1821 return p[0]; 1822 } 1823 1824 /* 1825 * Convert a UTF-8 byte sequence to a wide character. 1826 * String is assumed to be terminated by NUL or after "n" bytes, whichever 1827 * comes first. 1828 * The function is safe in the sense that it never accesses memory beyond the 1829 * first "n" bytes of "s". 1830 * 1831 * On success, returns decoded codepoint, advances "s" to the beginning of 1832 * next character and decreases "n" accordingly. 1833 * 1834 * If end of string was reached, returns 0 and, if "n" > 0, advances "s" past 1835 * NUL byte. 1836 * 1837 * If byte sequence is illegal or incomplete, returns -1 and does not advance 1838 * "s". 1839 */ 1840 static int 1841 utf_safe_read_char_adv(char_u **s, size_t *n) 1842 { 1843 int c, k; 1844 1845 if (*n == 0) // end of buffer 1846 return 0; 1847 1848 k = utf8len_tab_zero[**s]; 1849 1850 if (k == 1) 1851 { 1852 // ASCII character or NUL 1853 (*n)--; 1854 return *(*s)++; 1855 } 1856 1857 if ((size_t)k <= *n) 1858 { 1859 // We have a multibyte sequence and it isn't truncated by buffer 1860 // limits so utf_ptr2char() is safe to use. Or the first byte is 1861 // illegal (k=0), and it's also safe to use utf_ptr2char(). 1862 c = utf_ptr2char(*s); 1863 1864 // On failure, utf_ptr2char() returns the first byte, so here we 1865 // check equality with the first byte. The only non-ASCII character 1866 // which equals the first byte of its own UTF-8 representation is 1867 // U+00C3 (UTF-8: 0xC3 0x83), so need to check that special case too. 1868 // It's safe even if n=1, else we would have k=2 > n. 1869 if (c != (int)(**s) || (c == 0xC3 && (*s)[1] == 0x83)) 1870 { 1871 // byte sequence was successfully decoded 1872 *s += k; 1873 *n -= k; 1874 return c; 1875 } 1876 } 1877 1878 // byte sequence is incomplete or illegal 1879 return -1; 1880 } 1881 1882 /* 1883 * Get character at **pp and advance *pp to the next character. 1884 * Note: composing characters are skipped! 1885 */ 1886 int 1887 mb_ptr2char_adv(char_u **pp) 1888 { 1889 int c; 1890 1891 c = (*mb_ptr2char)(*pp); 1892 *pp += (*mb_ptr2len)(*pp); 1893 return c; 1894 } 1895 1896 /* 1897 * Get character at **pp and advance *pp to the next character. 1898 * Note: composing characters are returned as separate characters. 1899 */ 1900 int 1901 mb_cptr2char_adv(char_u **pp) 1902 { 1903 int c; 1904 1905 c = (*mb_ptr2char)(*pp); 1906 if (enc_utf8) 1907 *pp += utf_ptr2len(*pp); 1908 else 1909 *pp += (*mb_ptr2len)(*pp); 1910 return c; 1911 } 1912 1913 #if defined(FEAT_ARABIC) || defined(PROTO) 1914 /* 1915 * Check if the character pointed to by "p2" is a composing character when it 1916 * comes after "p1". For Arabic sometimes "ab" is replaced with "c", which 1917 * behaves like a composing character. 1918 */ 1919 int 1920 utf_composinglike(char_u *p1, char_u *p2) 1921 { 1922 int c2; 1923 1924 c2 = utf_ptr2char(p2); 1925 if (utf_iscomposing(c2)) 1926 return TRUE; 1927 if (!arabic_maycombine(c2)) 1928 return FALSE; 1929 return arabic_combine(utf_ptr2char(p1), c2); 1930 } 1931 #endif 1932 1933 /* 1934 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO 1935 * composing characters. 1936 */ 1937 int 1938 utfc_ptr2char( 1939 char_u *p, 1940 int *pcc) // return: composing chars, last one is 0 1941 { 1942 int len; 1943 int c; 1944 int cc; 1945 int i = 0; 1946 1947 c = utf_ptr2char(p); 1948 len = utf_ptr2len(p); 1949 1950 // Only accept a composing char when the first char isn't illegal. 1951 if ((len > 1 || *p < 0x80) 1952 && p[len] >= 0x80 1953 && UTF_COMPOSINGLIKE(p, p + len)) 1954 { 1955 cc = utf_ptr2char(p + len); 1956 for (;;) 1957 { 1958 pcc[i++] = cc; 1959 if (i == MAX_MCO) 1960 break; 1961 len += utf_ptr2len(p + len); 1962 if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len))) 1963 break; 1964 } 1965 } 1966 1967 if (i < MAX_MCO) // last composing char must be 0 1968 pcc[i] = 0; 1969 1970 return c; 1971 } 1972 1973 /* 1974 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO 1975 * composing characters. Use no more than p[maxlen]. 1976 */ 1977 int 1978 utfc_ptr2char_len( 1979 char_u *p, 1980 int *pcc, // return: composing chars, last one is 0 1981 int maxlen) 1982 { 1983 int len; 1984 int c; 1985 int cc; 1986 int i = 0; 1987 1988 c = utf_ptr2char(p); 1989 len = utf_ptr2len_len(p, maxlen); 1990 // Only accept a composing char when the first char isn't illegal. 1991 if ((len > 1 || *p < 0x80) 1992 && len < maxlen 1993 && p[len] >= 0x80 1994 && UTF_COMPOSINGLIKE(p, p + len)) 1995 { 1996 cc = utf_ptr2char(p + len); 1997 for (;;) 1998 { 1999 pcc[i++] = cc; 2000 if (i == MAX_MCO) 2001 break; 2002 len += utf_ptr2len_len(p + len, maxlen - len); 2003 if (len >= maxlen 2004 || p[len] < 0x80 2005 || !utf_iscomposing(cc = utf_ptr2char(p + len))) 2006 break; 2007 } 2008 } 2009 2010 if (i < MAX_MCO) // last composing char must be 0 2011 pcc[i] = 0; 2012 2013 return c; 2014 } 2015 2016 /* 2017 * Convert the character at screen position "off" to a sequence of bytes. 2018 * Includes the composing characters. 2019 * "buf" must at least have the length MB_MAXBYTES + 1. 2020 * Only to be used when ScreenLinesUC[off] != 0. 2021 * Returns the produced number of bytes. 2022 */ 2023 int 2024 utfc_char2bytes(int off, char_u *buf) 2025 { 2026 int len; 2027 int i; 2028 2029 len = utf_char2bytes(ScreenLinesUC[off], buf); 2030 for (i = 0; i < Screen_mco; ++i) 2031 { 2032 if (ScreenLinesC[i][off] == 0) 2033 break; 2034 len += utf_char2bytes(ScreenLinesC[i][off], buf + len); 2035 } 2036 return len; 2037 } 2038 2039 /* 2040 * Get the length of a UTF-8 byte sequence, not including any following 2041 * composing characters. 2042 * Returns 0 for "". 2043 * Returns 1 for an illegal byte sequence. 2044 */ 2045 int 2046 utf_ptr2len(char_u *p) 2047 { 2048 int len; 2049 int i; 2050 2051 if (*p == NUL) 2052 return 0; 2053 len = utf8len_tab[*p]; 2054 for (i = 1; i < len; ++i) 2055 if ((p[i] & 0xc0) != 0x80) 2056 return 1; 2057 return len; 2058 } 2059 2060 /* 2061 * Return length of UTF-8 character, obtained from the first byte. 2062 * "b" must be between 0 and 255! 2063 * Returns 1 for an invalid first byte value. 2064 */ 2065 int 2066 utf_byte2len(int b) 2067 { 2068 return utf8len_tab[b]; 2069 } 2070 2071 /* 2072 * Get the length of UTF-8 byte sequence "p[size]". Does not include any 2073 * following composing characters. 2074 * Returns 1 for "". 2075 * Returns 1 for an illegal byte sequence (also in incomplete byte seq.). 2076 * Returns number > "size" for an incomplete byte sequence. 2077 * Never returns zero. 2078 */ 2079 int 2080 utf_ptr2len_len(char_u *p, int size) 2081 { 2082 int len; 2083 int i; 2084 int m; 2085 2086 len = utf8len_tab[*p]; 2087 if (len == 1) 2088 return 1; // NUL, ascii or illegal lead byte 2089 if (len > size) 2090 m = size; // incomplete byte sequence. 2091 else 2092 m = len; 2093 for (i = 1; i < m; ++i) 2094 if ((p[i] & 0xc0) != 0x80) 2095 return 1; 2096 return len; 2097 } 2098 2099 /* 2100 * Return the number of bytes the UTF-8 encoding of the character at "p" takes. 2101 * This includes following composing characters. 2102 */ 2103 int 2104 utfc_ptr2len(char_u *p) 2105 { 2106 int len; 2107 int b0 = *p; 2108 #ifdef FEAT_ARABIC 2109 int prevlen; 2110 #endif 2111 2112 if (b0 == NUL) 2113 return 0; 2114 if (b0 < 0x80 && p[1] < 0x80) // be quick for ASCII 2115 return 1; 2116 2117 // Skip over first UTF-8 char, stopping at a NUL byte. 2118 len = utf_ptr2len(p); 2119 2120 // Check for illegal byte. 2121 if (len == 1 && b0 >= 0x80) 2122 return 1; 2123 2124 /* 2125 * Check for composing characters. We can handle only the first six, but 2126 * skip all of them (otherwise the cursor would get stuck). 2127 */ 2128 #ifdef FEAT_ARABIC 2129 prevlen = 0; 2130 #endif 2131 for (;;) 2132 { 2133 if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len)) 2134 return len; 2135 2136 // Skip over composing char 2137 #ifdef FEAT_ARABIC 2138 prevlen = len; 2139 #endif 2140 len += utf_ptr2len(p + len); 2141 } 2142 } 2143 2144 /* 2145 * Return the number of bytes the UTF-8 encoding of the character at "p[size]" 2146 * takes. This includes following composing characters. 2147 * Returns 0 for an empty string. 2148 * Returns 1 for an illegal char or an incomplete byte sequence. 2149 */ 2150 int 2151 utfc_ptr2len_len(char_u *p, int size) 2152 { 2153 int len; 2154 #ifdef FEAT_ARABIC 2155 int prevlen; 2156 #endif 2157 2158 if (size < 1 || *p == NUL) 2159 return 0; 2160 if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) // be quick for ASCII 2161 return 1; 2162 2163 // Skip over first UTF-8 char, stopping at a NUL byte. 2164 len = utf_ptr2len_len(p, size); 2165 2166 // Check for illegal byte and incomplete byte sequence. 2167 if ((len == 1 && p[0] >= 0x80) || len > size) 2168 return 1; 2169 2170 /* 2171 * Check for composing characters. We can handle only the first six, but 2172 * skip all of them (otherwise the cursor would get stuck). 2173 */ 2174 #ifdef FEAT_ARABIC 2175 prevlen = 0; 2176 #endif 2177 while (len < size) 2178 { 2179 int len_next_char; 2180 2181 if (p[len] < 0x80) 2182 break; 2183 2184 /* 2185 * Next character length should not go beyond size to ensure that 2186 * UTF_COMPOSINGLIKE(...) does not read beyond size. 2187 */ 2188 len_next_char = utf_ptr2len_len(p + len, size - len); 2189 if (len_next_char > size - len) 2190 break; 2191 2192 if (!UTF_COMPOSINGLIKE(p + prevlen, p + len)) 2193 break; 2194 2195 // Skip over composing char 2196 #ifdef FEAT_ARABIC 2197 prevlen = len; 2198 #endif 2199 len += len_next_char; 2200 } 2201 return len; 2202 } 2203 2204 /* 2205 * Return the number of bytes the UTF-8 encoding of character "c" takes. 2206 * This does not include composing characters. 2207 */ 2208 int 2209 utf_char2len(int c) 2210 { 2211 if (c < 0x80) 2212 return 1; 2213 if (c < 0x800) 2214 return 2; 2215 if (c < 0x10000) 2216 return 3; 2217 if (c < 0x200000) 2218 return 4; 2219 if (c < 0x4000000) 2220 return 5; 2221 return 6; 2222 } 2223 2224 /* 2225 * Convert Unicode character "c" to UTF-8 string in "buf[]". 2226 * Returns the number of bytes. 2227 */ 2228 int 2229 utf_char2bytes(int c, char_u *buf) 2230 { 2231 if (c < 0x80) // 7 bits 2232 { 2233 buf[0] = c; 2234 return 1; 2235 } 2236 if (c < 0x800) // 11 bits 2237 { 2238 buf[0] = 0xc0 + ((unsigned)c >> 6); 2239 buf[1] = 0x80 + (c & 0x3f); 2240 return 2; 2241 } 2242 if (c < 0x10000) // 16 bits 2243 { 2244 buf[0] = 0xe0 + ((unsigned)c >> 12); 2245 buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2246 buf[2] = 0x80 + (c & 0x3f); 2247 return 3; 2248 } 2249 if (c < 0x200000) // 21 bits 2250 { 2251 buf[0] = 0xf0 + ((unsigned)c >> 18); 2252 buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f); 2253 buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2254 buf[3] = 0x80 + (c & 0x3f); 2255 return 4; 2256 } 2257 if (c < 0x4000000) // 26 bits 2258 { 2259 buf[0] = 0xf8 + ((unsigned)c >> 24); 2260 buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f); 2261 buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f); 2262 buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2263 buf[4] = 0x80 + (c & 0x3f); 2264 return 5; 2265 } 2266 // 31 bits 2267 buf[0] = 0xfc + ((unsigned)c >> 30); 2268 buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f); 2269 buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f); 2270 buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f); 2271 buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2272 buf[5] = 0x80 + (c & 0x3f); 2273 return 6; 2274 } 2275 2276 #if defined(FEAT_TERMINAL) || defined(PROTO) 2277 /* 2278 * utf_iscomposing() with different argument type for libvterm. 2279 */ 2280 int 2281 utf_iscomposing_uint(UINT32_T c) 2282 { 2283 return utf_iscomposing((int)c); 2284 } 2285 #endif 2286 2287 /* 2288 * Return TRUE if "c" is a composing UTF-8 character. This means it will be 2289 * drawn on top of the preceding character. 2290 * Based on code from Markus Kuhn. 2291 */ 2292 int 2293 utf_iscomposing(int c) 2294 { 2295 // Sorted list of non-overlapping intervals. 2296 // Generated by ../runtime/tools/unicode.vim. 2297 static struct interval combining[] = 2298 { 2299 {0x0300, 0x036f}, 2300 {0x0483, 0x0489}, 2301 {0x0591, 0x05bd}, 2302 {0x05bf, 0x05bf}, 2303 {0x05c1, 0x05c2}, 2304 {0x05c4, 0x05c5}, 2305 {0x05c7, 0x05c7}, 2306 {0x0610, 0x061a}, 2307 {0x064b, 0x065f}, 2308 {0x0670, 0x0670}, 2309 {0x06d6, 0x06dc}, 2310 {0x06df, 0x06e4}, 2311 {0x06e7, 0x06e8}, 2312 {0x06ea, 0x06ed}, 2313 {0x0711, 0x0711}, 2314 {0x0730, 0x074a}, 2315 {0x07a6, 0x07b0}, 2316 {0x07eb, 0x07f3}, 2317 {0x07fd, 0x07fd}, 2318 {0x0816, 0x0819}, 2319 {0x081b, 0x0823}, 2320 {0x0825, 0x0827}, 2321 {0x0829, 0x082d}, 2322 {0x0859, 0x085b}, 2323 {0x08d3, 0x08e1}, 2324 {0x08e3, 0x0903}, 2325 {0x093a, 0x093c}, 2326 {0x093e, 0x094f}, 2327 {0x0951, 0x0957}, 2328 {0x0962, 0x0963}, 2329 {0x0981, 0x0983}, 2330 {0x09bc, 0x09bc}, 2331 {0x09be, 0x09c4}, 2332 {0x09c7, 0x09c8}, 2333 {0x09cb, 0x09cd}, 2334 {0x09d7, 0x09d7}, 2335 {0x09e2, 0x09e3}, 2336 {0x09fe, 0x09fe}, 2337 {0x0a01, 0x0a03}, 2338 {0x0a3c, 0x0a3c}, 2339 {0x0a3e, 0x0a42}, 2340 {0x0a47, 0x0a48}, 2341 {0x0a4b, 0x0a4d}, 2342 {0x0a51, 0x0a51}, 2343 {0x0a70, 0x0a71}, 2344 {0x0a75, 0x0a75}, 2345 {0x0a81, 0x0a83}, 2346 {0x0abc, 0x0abc}, 2347 {0x0abe, 0x0ac5}, 2348 {0x0ac7, 0x0ac9}, 2349 {0x0acb, 0x0acd}, 2350 {0x0ae2, 0x0ae3}, 2351 {0x0afa, 0x0aff}, 2352 {0x0b01, 0x0b03}, 2353 {0x0b3c, 0x0b3c}, 2354 {0x0b3e, 0x0b44}, 2355 {0x0b47, 0x0b48}, 2356 {0x0b4b, 0x0b4d}, 2357 {0x0b55, 0x0b57}, 2358 {0x0b62, 0x0b63}, 2359 {0x0b82, 0x0b82}, 2360 {0x0bbe, 0x0bc2}, 2361 {0x0bc6, 0x0bc8}, 2362 {0x0bca, 0x0bcd}, 2363 {0x0bd7, 0x0bd7}, 2364 {0x0c00, 0x0c04}, 2365 {0x0c3e, 0x0c44}, 2366 {0x0c46, 0x0c48}, 2367 {0x0c4a, 0x0c4d}, 2368 {0x0c55, 0x0c56}, 2369 {0x0c62, 0x0c63}, 2370 {0x0c81, 0x0c83}, 2371 {0x0cbc, 0x0cbc}, 2372 {0x0cbe, 0x0cc4}, 2373 {0x0cc6, 0x0cc8}, 2374 {0x0cca, 0x0ccd}, 2375 {0x0cd5, 0x0cd6}, 2376 {0x0ce2, 0x0ce3}, 2377 {0x0d00, 0x0d03}, 2378 {0x0d3b, 0x0d3c}, 2379 {0x0d3e, 0x0d44}, 2380 {0x0d46, 0x0d48}, 2381 {0x0d4a, 0x0d4d}, 2382 {0x0d57, 0x0d57}, 2383 {0x0d62, 0x0d63}, 2384 {0x0d81, 0x0d83}, 2385 {0x0dca, 0x0dca}, 2386 {0x0dcf, 0x0dd4}, 2387 {0x0dd6, 0x0dd6}, 2388 {0x0dd8, 0x0ddf}, 2389 {0x0df2, 0x0df3}, 2390 {0x0e31, 0x0e31}, 2391 {0x0e34, 0x0e3a}, 2392 {0x0e47, 0x0e4e}, 2393 {0x0eb1, 0x0eb1}, 2394 {0x0eb4, 0x0ebc}, 2395 {0x0ec8, 0x0ecd}, 2396 {0x0f18, 0x0f19}, 2397 {0x0f35, 0x0f35}, 2398 {0x0f37, 0x0f37}, 2399 {0x0f39, 0x0f39}, 2400 {0x0f3e, 0x0f3f}, 2401 {0x0f71, 0x0f84}, 2402 {0x0f86, 0x0f87}, 2403 {0x0f8d, 0x0f97}, 2404 {0x0f99, 0x0fbc}, 2405 {0x0fc6, 0x0fc6}, 2406 {0x102b, 0x103e}, 2407 {0x1056, 0x1059}, 2408 {0x105e, 0x1060}, 2409 {0x1062, 0x1064}, 2410 {0x1067, 0x106d}, 2411 {0x1071, 0x1074}, 2412 {0x1082, 0x108d}, 2413 {0x108f, 0x108f}, 2414 {0x109a, 0x109d}, 2415 {0x135d, 0x135f}, 2416 {0x1712, 0x1714}, 2417 {0x1732, 0x1734}, 2418 {0x1752, 0x1753}, 2419 {0x1772, 0x1773}, 2420 {0x17b4, 0x17d3}, 2421 {0x17dd, 0x17dd}, 2422 {0x180b, 0x180d}, 2423 {0x1885, 0x1886}, 2424 {0x18a9, 0x18a9}, 2425 {0x1920, 0x192b}, 2426 {0x1930, 0x193b}, 2427 {0x1a17, 0x1a1b}, 2428 {0x1a55, 0x1a5e}, 2429 {0x1a60, 0x1a7c}, 2430 {0x1a7f, 0x1a7f}, 2431 {0x1ab0, 0x1ac0}, 2432 {0x1b00, 0x1b04}, 2433 {0x1b34, 0x1b44}, 2434 {0x1b6b, 0x1b73}, 2435 {0x1b80, 0x1b82}, 2436 {0x1ba1, 0x1bad}, 2437 {0x1be6, 0x1bf3}, 2438 {0x1c24, 0x1c37}, 2439 {0x1cd0, 0x1cd2}, 2440 {0x1cd4, 0x1ce8}, 2441 {0x1ced, 0x1ced}, 2442 {0x1cf4, 0x1cf4}, 2443 {0x1cf7, 0x1cf9}, 2444 {0x1dc0, 0x1df9}, 2445 {0x1dfb, 0x1dff}, 2446 {0x20d0, 0x20f0}, 2447 {0x2cef, 0x2cf1}, 2448 {0x2d7f, 0x2d7f}, 2449 {0x2de0, 0x2dff}, 2450 {0x302a, 0x302f}, 2451 {0x3099, 0x309a}, 2452 {0xa66f, 0xa672}, 2453 {0xa674, 0xa67d}, 2454 {0xa69e, 0xa69f}, 2455 {0xa6f0, 0xa6f1}, 2456 {0xa802, 0xa802}, 2457 {0xa806, 0xa806}, 2458 {0xa80b, 0xa80b}, 2459 {0xa823, 0xa827}, 2460 {0xa82c, 0xa82c}, 2461 {0xa880, 0xa881}, 2462 {0xa8b4, 0xa8c5}, 2463 {0xa8e0, 0xa8f1}, 2464 {0xa8ff, 0xa8ff}, 2465 {0xa926, 0xa92d}, 2466 {0xa947, 0xa953}, 2467 {0xa980, 0xa983}, 2468 {0xa9b3, 0xa9c0}, 2469 {0xa9e5, 0xa9e5}, 2470 {0xaa29, 0xaa36}, 2471 {0xaa43, 0xaa43}, 2472 {0xaa4c, 0xaa4d}, 2473 {0xaa7b, 0xaa7d}, 2474 {0xaab0, 0xaab0}, 2475 {0xaab2, 0xaab4}, 2476 {0xaab7, 0xaab8}, 2477 {0xaabe, 0xaabf}, 2478 {0xaac1, 0xaac1}, 2479 {0xaaeb, 0xaaef}, 2480 {0xaaf5, 0xaaf6}, 2481 {0xabe3, 0xabea}, 2482 {0xabec, 0xabed}, 2483 {0xfb1e, 0xfb1e}, 2484 {0xfe00, 0xfe0f}, 2485 {0xfe20, 0xfe2f}, 2486 {0x101fd, 0x101fd}, 2487 {0x102e0, 0x102e0}, 2488 {0x10376, 0x1037a}, 2489 {0x10a01, 0x10a03}, 2490 {0x10a05, 0x10a06}, 2491 {0x10a0c, 0x10a0f}, 2492 {0x10a38, 0x10a3a}, 2493 {0x10a3f, 0x10a3f}, 2494 {0x10ae5, 0x10ae6}, 2495 {0x10d24, 0x10d27}, 2496 {0x10eab, 0x10eac}, 2497 {0x10f46, 0x10f50}, 2498 {0x11000, 0x11002}, 2499 {0x11038, 0x11046}, 2500 {0x1107f, 0x11082}, 2501 {0x110b0, 0x110ba}, 2502 {0x11100, 0x11102}, 2503 {0x11127, 0x11134}, 2504 {0x11145, 0x11146}, 2505 {0x11173, 0x11173}, 2506 {0x11180, 0x11182}, 2507 {0x111b3, 0x111c0}, 2508 {0x111c9, 0x111cc}, 2509 {0x111ce, 0x111cf}, 2510 {0x1122c, 0x11237}, 2511 {0x1123e, 0x1123e}, 2512 {0x112df, 0x112ea}, 2513 {0x11300, 0x11303}, 2514 {0x1133b, 0x1133c}, 2515 {0x1133e, 0x11344}, 2516 {0x11347, 0x11348}, 2517 {0x1134b, 0x1134d}, 2518 {0x11357, 0x11357}, 2519 {0x11362, 0x11363}, 2520 {0x11366, 0x1136c}, 2521 {0x11370, 0x11374}, 2522 {0x11435, 0x11446}, 2523 {0x1145e, 0x1145e}, 2524 {0x114b0, 0x114c3}, 2525 {0x115af, 0x115b5}, 2526 {0x115b8, 0x115c0}, 2527 {0x115dc, 0x115dd}, 2528 {0x11630, 0x11640}, 2529 {0x116ab, 0x116b7}, 2530 {0x1171d, 0x1172b}, 2531 {0x1182c, 0x1183a}, 2532 {0x11930, 0x11935}, 2533 {0x11937, 0x11938}, 2534 {0x1193b, 0x1193e}, 2535 {0x11940, 0x11940}, 2536 {0x11942, 0x11943}, 2537 {0x119d1, 0x119d7}, 2538 {0x119da, 0x119e0}, 2539 {0x119e4, 0x119e4}, 2540 {0x11a01, 0x11a0a}, 2541 {0x11a33, 0x11a39}, 2542 {0x11a3b, 0x11a3e}, 2543 {0x11a47, 0x11a47}, 2544 {0x11a51, 0x11a5b}, 2545 {0x11a8a, 0x11a99}, 2546 {0x11c2f, 0x11c36}, 2547 {0x11c38, 0x11c3f}, 2548 {0x11c92, 0x11ca7}, 2549 {0x11ca9, 0x11cb6}, 2550 {0x11d31, 0x11d36}, 2551 {0x11d3a, 0x11d3a}, 2552 {0x11d3c, 0x11d3d}, 2553 {0x11d3f, 0x11d45}, 2554 {0x11d47, 0x11d47}, 2555 {0x11d8a, 0x11d8e}, 2556 {0x11d90, 0x11d91}, 2557 {0x11d93, 0x11d97}, 2558 {0x11ef3, 0x11ef6}, 2559 {0x16af0, 0x16af4}, 2560 {0x16b30, 0x16b36}, 2561 {0x16f4f, 0x16f4f}, 2562 {0x16f51, 0x16f87}, 2563 {0x16f8f, 0x16f92}, 2564 {0x16fe4, 0x16fe4}, 2565 {0x16ff0, 0x16ff1}, 2566 {0x1bc9d, 0x1bc9e}, 2567 {0x1d165, 0x1d169}, 2568 {0x1d16d, 0x1d172}, 2569 {0x1d17b, 0x1d182}, 2570 {0x1d185, 0x1d18b}, 2571 {0x1d1aa, 0x1d1ad}, 2572 {0x1d242, 0x1d244}, 2573 {0x1da00, 0x1da36}, 2574 {0x1da3b, 0x1da6c}, 2575 {0x1da75, 0x1da75}, 2576 {0x1da84, 0x1da84}, 2577 {0x1da9b, 0x1da9f}, 2578 {0x1daa1, 0x1daaf}, 2579 {0x1e000, 0x1e006}, 2580 {0x1e008, 0x1e018}, 2581 {0x1e01b, 0x1e021}, 2582 {0x1e023, 0x1e024}, 2583 {0x1e026, 0x1e02a}, 2584 {0x1e130, 0x1e136}, 2585 {0x1e2ec, 0x1e2ef}, 2586 {0x1e8d0, 0x1e8d6}, 2587 {0x1e944, 0x1e94a}, 2588 {0xe0100, 0xe01ef} 2589 }; 2590 2591 return intable(combining, sizeof(combining), c); 2592 } 2593 2594 /* 2595 * Return TRUE for characters that can be displayed in a normal way. 2596 * Only for characters of 0x100 and above! 2597 */ 2598 int 2599 utf_printable(int c) 2600 { 2601 #ifdef USE_WCHAR_FUNCTIONS 2602 /* 2603 * Assume the iswprint() library function works better than our own stuff. 2604 */ 2605 return iswprint(c); 2606 #else 2607 // Sorted list of non-overlapping intervals. 2608 // 0xd800-0xdfff is reserved for UTF-16, actually illegal. 2609 static struct interval nonprint[] = 2610 { 2611 {0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e}, 2612 {0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb}, 2613 {0xfffe, 0xffff} 2614 }; 2615 2616 return !intable(nonprint, sizeof(nonprint), c); 2617 #endif 2618 } 2619 2620 // Sorted list of non-overlapping intervals of all Emoji characters, 2621 // based on http://unicode.org/emoji/charts/emoji-list.html 2622 // Generated by ../runtime/tools/unicode.vim. 2623 // Excludes 0x00a9 and 0x00ae because they are considered latin1. 2624 static struct interval emoji_all[] = 2625 { 2626 {0x203c, 0x203c}, 2627 {0x2049, 0x2049}, 2628 {0x2122, 0x2122}, 2629 {0x2139, 0x2139}, 2630 {0x2194, 0x2199}, 2631 {0x21a9, 0x21aa}, 2632 {0x231a, 0x231b}, 2633 {0x2328, 0x2328}, 2634 {0x23cf, 0x23cf}, 2635 {0x23e9, 0x23f3}, 2636 {0x23f8, 0x23fa}, 2637 {0x24c2, 0x24c2}, 2638 {0x25aa, 0x25ab}, 2639 {0x25b6, 0x25b6}, 2640 {0x25c0, 0x25c0}, 2641 {0x25fb, 0x25fe}, 2642 {0x2600, 0x2604}, 2643 {0x260e, 0x260e}, 2644 {0x2611, 0x2611}, 2645 {0x2614, 0x2615}, 2646 {0x2618, 0x2618}, 2647 {0x261d, 0x261d}, 2648 {0x2620, 0x2620}, 2649 {0x2622, 0x2623}, 2650 {0x2626, 0x2626}, 2651 {0x262a, 0x262a}, 2652 {0x262e, 0x262f}, 2653 {0x2638, 0x263a}, 2654 {0x2640, 0x2640}, 2655 {0x2642, 0x2642}, 2656 {0x2648, 0x2653}, 2657 {0x265f, 0x2660}, 2658 {0x2663, 0x2663}, 2659 {0x2665, 0x2666}, 2660 {0x2668, 0x2668}, 2661 {0x267b, 0x267b}, 2662 {0x267e, 0x267f}, 2663 {0x2692, 0x2697}, 2664 {0x2699, 0x2699}, 2665 {0x269b, 0x269c}, 2666 {0x26a0, 0x26a1}, 2667 {0x26a7, 0x26a7}, 2668 {0x26aa, 0x26ab}, 2669 {0x26b0, 0x26b1}, 2670 {0x26bd, 0x26be}, 2671 {0x26c4, 0x26c5}, 2672 {0x26c8, 0x26c8}, 2673 {0x26ce, 0x26cf}, 2674 {0x26d1, 0x26d1}, 2675 {0x26d3, 0x26d4}, 2676 {0x26e9, 0x26ea}, 2677 {0x26f0, 0x26f5}, 2678 {0x26f7, 0x26fa}, 2679 {0x26fd, 0x26fd}, 2680 {0x2702, 0x2702}, 2681 {0x2705, 0x2705}, 2682 {0x2708, 0x270d}, 2683 {0x270f, 0x270f}, 2684 {0x2712, 0x2712}, 2685 {0x2714, 0x2714}, 2686 {0x2716, 0x2716}, 2687 {0x271d, 0x271d}, 2688 {0x2721, 0x2721}, 2689 {0x2728, 0x2728}, 2690 {0x2733, 0x2734}, 2691 {0x2744, 0x2744}, 2692 {0x2747, 0x2747}, 2693 {0x274c, 0x274c}, 2694 {0x274e, 0x274e}, 2695 {0x2753, 0x2755}, 2696 {0x2757, 0x2757}, 2697 {0x2763, 0x2764}, 2698 {0x2795, 0x2797}, 2699 {0x27a1, 0x27a1}, 2700 {0x27b0, 0x27b0}, 2701 {0x27bf, 0x27bf}, 2702 {0x2934, 0x2935}, 2703 {0x2b05, 0x2b07}, 2704 {0x2b1b, 0x2b1c}, 2705 {0x2b50, 0x2b50}, 2706 {0x2b55, 0x2b55}, 2707 {0x3030, 0x3030}, 2708 {0x303d, 0x303d}, 2709 {0x3297, 0x3297}, 2710 {0x3299, 0x3299}, 2711 {0x1f004, 0x1f004}, 2712 {0x1f0cf, 0x1f0cf}, 2713 {0x1f170, 0x1f171}, 2714 {0x1f17e, 0x1f17f}, 2715 {0x1f18e, 0x1f18e}, 2716 {0x1f191, 0x1f19a}, 2717 {0x1f1e6, 0x1f1ff}, 2718 {0x1f201, 0x1f202}, 2719 {0x1f21a, 0x1f21a}, 2720 {0x1f22f, 0x1f22f}, 2721 {0x1f232, 0x1f23a}, 2722 {0x1f250, 0x1f251}, 2723 {0x1f300, 0x1f321}, 2724 {0x1f324, 0x1f393}, 2725 {0x1f396, 0x1f397}, 2726 {0x1f399, 0x1f39b}, 2727 {0x1f39e, 0x1f3f0}, 2728 {0x1f3f3, 0x1f3f5}, 2729 {0x1f3f7, 0x1f4fd}, 2730 {0x1f4ff, 0x1f53d}, 2731 {0x1f549, 0x1f54e}, 2732 {0x1f550, 0x1f567}, 2733 {0x1f56f, 0x1f570}, 2734 {0x1f573, 0x1f57a}, 2735 {0x1f587, 0x1f587}, 2736 {0x1f58a, 0x1f58d}, 2737 {0x1f590, 0x1f590}, 2738 {0x1f595, 0x1f596}, 2739 {0x1f5a4, 0x1f5a5}, 2740 {0x1f5a8, 0x1f5a8}, 2741 {0x1f5b1, 0x1f5b2}, 2742 {0x1f5bc, 0x1f5bc}, 2743 {0x1f5c2, 0x1f5c4}, 2744 {0x1f5d1, 0x1f5d3}, 2745 {0x1f5dc, 0x1f5de}, 2746 {0x1f5e1, 0x1f5e1}, 2747 {0x1f5e3, 0x1f5e3}, 2748 {0x1f5e8, 0x1f5e8}, 2749 {0x1f5ef, 0x1f5ef}, 2750 {0x1f5f3, 0x1f5f3}, 2751 {0x1f5fa, 0x1f64f}, 2752 {0x1f680, 0x1f6c5}, 2753 {0x1f6cb, 0x1f6d2}, 2754 {0x1f6d5, 0x1f6d7}, 2755 {0x1f6e0, 0x1f6e5}, 2756 {0x1f6e9, 0x1f6e9}, 2757 {0x1f6eb, 0x1f6ec}, 2758 {0x1f6f0, 0x1f6f0}, 2759 {0x1f6f3, 0x1f6fc}, 2760 {0x1f7e0, 0x1f7eb}, 2761 {0x1f90c, 0x1f93a}, 2762 {0x1f93c, 0x1f945}, 2763 {0x1f947, 0x1f978}, 2764 {0x1f97a, 0x1f9cb}, 2765 {0x1f9cd, 0x1f9ff}, 2766 {0x1fa70, 0x1fa74}, 2767 {0x1fa78, 0x1fa7a}, 2768 {0x1fa80, 0x1fa86}, 2769 {0x1fa90, 0x1faa8}, 2770 {0x1fab0, 0x1fab6}, 2771 {0x1fac0, 0x1fac2}, 2772 {0x1fad0, 0x1fad6} 2773 }; 2774 2775 /* 2776 * Get class of a Unicode character. 2777 * 0: white space 2778 * 1: punctuation 2779 * 2 or bigger: some class of word character. 2780 */ 2781 int 2782 utf_class(int c) 2783 { 2784 return utf_class_buf(c, curbuf); 2785 } 2786 2787 int 2788 utf_class_buf(int c, buf_T *buf) 2789 { 2790 // sorted list of non-overlapping intervals 2791 static struct clinterval 2792 { 2793 unsigned int first; 2794 unsigned int last; 2795 unsigned int class; 2796 } classes[] = 2797 { 2798 {0x037e, 0x037e, 1}, // Greek question mark 2799 {0x0387, 0x0387, 1}, // Greek ano teleia 2800 {0x055a, 0x055f, 1}, // Armenian punctuation 2801 {0x0589, 0x0589, 1}, // Armenian full stop 2802 {0x05be, 0x05be, 1}, 2803 {0x05c0, 0x05c0, 1}, 2804 {0x05c3, 0x05c3, 1}, 2805 {0x05f3, 0x05f4, 1}, 2806 {0x060c, 0x060c, 1}, 2807 {0x061b, 0x061b, 1}, 2808 {0x061f, 0x061f, 1}, 2809 {0x066a, 0x066d, 1}, 2810 {0x06d4, 0x06d4, 1}, 2811 {0x0700, 0x070d, 1}, // Syriac punctuation 2812 {0x0964, 0x0965, 1}, 2813 {0x0970, 0x0970, 1}, 2814 {0x0df4, 0x0df4, 1}, 2815 {0x0e4f, 0x0e4f, 1}, 2816 {0x0e5a, 0x0e5b, 1}, 2817 {0x0f04, 0x0f12, 1}, 2818 {0x0f3a, 0x0f3d, 1}, 2819 {0x0f85, 0x0f85, 1}, 2820 {0x104a, 0x104f, 1}, // Myanmar punctuation 2821 {0x10fb, 0x10fb, 1}, // Georgian punctuation 2822 {0x1361, 0x1368, 1}, // Ethiopic punctuation 2823 {0x166d, 0x166e, 1}, // Canadian Syl. punctuation 2824 {0x1680, 0x1680, 0}, 2825 {0x169b, 0x169c, 1}, 2826 {0x16eb, 0x16ed, 1}, 2827 {0x1735, 0x1736, 1}, 2828 {0x17d4, 0x17dc, 1}, // Khmer punctuation 2829 {0x1800, 0x180a, 1}, // Mongolian punctuation 2830 {0x2000, 0x200b, 0}, // spaces 2831 {0x200c, 0x2027, 1}, // punctuation and symbols 2832 {0x2028, 0x2029, 0}, 2833 {0x202a, 0x202e, 1}, // punctuation and symbols 2834 {0x202f, 0x202f, 0}, 2835 {0x2030, 0x205e, 1}, // punctuation and symbols 2836 {0x205f, 0x205f, 0}, 2837 {0x2060, 0x27ff, 1}, // punctuation and symbols 2838 {0x2070, 0x207f, 0x2070}, // superscript 2839 {0x2080, 0x2094, 0x2080}, // subscript 2840 {0x20a0, 0x27ff, 1}, // all kinds of symbols 2841 {0x2800, 0x28ff, 0x2800}, // braille 2842 {0x2900, 0x2998, 1}, // arrows, brackets, etc. 2843 {0x29d8, 0x29db, 1}, 2844 {0x29fc, 0x29fd, 1}, 2845 {0x2e00, 0x2e7f, 1}, // supplemental punctuation 2846 {0x3000, 0x3000, 0}, // ideographic space 2847 {0x3001, 0x3020, 1}, // ideographic punctuation 2848 {0x3030, 0x3030, 1}, 2849 {0x303d, 0x303d, 1}, 2850 {0x3040, 0x309f, 0x3040}, // Hiragana 2851 {0x30a0, 0x30ff, 0x30a0}, // Katakana 2852 {0x3300, 0x9fff, 0x4e00}, // CJK Ideographs 2853 {0xac00, 0xd7a3, 0xac00}, // Hangul Syllables 2854 {0xf900, 0xfaff, 0x4e00}, // CJK Ideographs 2855 {0xfd3e, 0xfd3f, 1}, 2856 {0xfe30, 0xfe6b, 1}, // punctuation forms 2857 {0xff00, 0xff0f, 1}, // half/fullwidth ASCII 2858 {0xff1a, 0xff20, 1}, // half/fullwidth ASCII 2859 {0xff3b, 0xff40, 1}, // half/fullwidth ASCII 2860 {0xff5b, 0xff65, 1}, // half/fullwidth ASCII 2861 {0x1d000, 0x1d24f, 1}, // Musical notation 2862 {0x1d400, 0x1d7ff, 1}, // Mathematical Alphanumeric Symbols 2863 {0x1f000, 0x1f2ff, 1}, // Game pieces; enclosed characters 2864 {0x1f300, 0x1f9ff, 1}, // Many symbol blocks 2865 {0x20000, 0x2a6df, 0x4e00}, // CJK Ideographs 2866 {0x2a700, 0x2b73f, 0x4e00}, // CJK Ideographs 2867 {0x2b740, 0x2b81f, 0x4e00}, // CJK Ideographs 2868 {0x2f800, 0x2fa1f, 0x4e00}, // CJK Ideographs 2869 }; 2870 2871 int bot = 0; 2872 int top = ARRAY_LENGTH(classes) - 1; 2873 int mid; 2874 2875 // First quick check for Latin1 characters, use 'iskeyword'. 2876 if (c < 0x100) 2877 { 2878 if (c == ' ' || c == '\t' || c == NUL || c == 0xa0) 2879 return 0; // blank 2880 if (vim_iswordc_buf(c, buf)) 2881 return 2; // word character 2882 return 1; // punctuation 2883 } 2884 2885 // emoji 2886 if (intable(emoji_all, sizeof(emoji_all), c)) 2887 return 3; 2888 2889 // binary search in table 2890 while (top >= bot) 2891 { 2892 mid = (bot + top) / 2; 2893 if (classes[mid].last < (unsigned int)c) 2894 bot = mid + 1; 2895 else if (classes[mid].first > (unsigned int)c) 2896 top = mid - 1; 2897 else 2898 return (int)classes[mid].class; 2899 } 2900 2901 // most other characters are "word" characters 2902 return 2; 2903 } 2904 2905 int 2906 utf_ambiguous_width(int c) 2907 { 2908 return c >= 0x80 && (intable(ambiguous, sizeof(ambiguous), c) 2909 || intable(emoji_all, sizeof(emoji_all), c)); 2910 } 2911 2912 /* 2913 * Code for Unicode case-dependent operations. Based on notes in 2914 * http://www.unicode.org/Public/UNIDATA/CaseFolding.txt 2915 * This code uses simple case folding, not full case folding. 2916 * Last updated for Unicode 5.2. 2917 */ 2918 2919 /* 2920 * The following tables are built by ../runtime/tools/unicode.vim. 2921 * They must be in numeric order, because we use binary search. 2922 * An entry such as {0x41,0x5a,1,32} means that Unicode characters in the 2923 * range from 0x41 to 0x5a inclusive, stepping by 1, are changed to 2924 * folded/upper/lower by adding 32. 2925 */ 2926 typedef struct 2927 { 2928 int rangeStart; 2929 int rangeEnd; 2930 int step; 2931 int offset; 2932 } convertStruct; 2933 2934 static convertStruct foldCase[] = 2935 { 2936 {0x41,0x5a,1,32}, 2937 {0xb5,0xb5,-1,775}, 2938 {0xc0,0xd6,1,32}, 2939 {0xd8,0xde,1,32}, 2940 {0x100,0x12e,2,1}, 2941 {0x132,0x136,2,1}, 2942 {0x139,0x147,2,1}, 2943 {0x14a,0x176,2,1}, 2944 {0x178,0x178,-1,-121}, 2945 {0x179,0x17d,2,1}, 2946 {0x17f,0x17f,-1,-268}, 2947 {0x181,0x181,-1,210}, 2948 {0x182,0x184,2,1}, 2949 {0x186,0x186,-1,206}, 2950 {0x187,0x187,-1,1}, 2951 {0x189,0x18a,1,205}, 2952 {0x18b,0x18b,-1,1}, 2953 {0x18e,0x18e,-1,79}, 2954 {0x18f,0x18f,-1,202}, 2955 {0x190,0x190,-1,203}, 2956 {0x191,0x191,-1,1}, 2957 {0x193,0x193,-1,205}, 2958 {0x194,0x194,-1,207}, 2959 {0x196,0x196,-1,211}, 2960 {0x197,0x197,-1,209}, 2961 {0x198,0x198,-1,1}, 2962 {0x19c,0x19c,-1,211}, 2963 {0x19d,0x19d,-1,213}, 2964 {0x19f,0x19f,-1,214}, 2965 {0x1a0,0x1a4,2,1}, 2966 {0x1a6,0x1a6,-1,218}, 2967 {0x1a7,0x1a7,-1,1}, 2968 {0x1a9,0x1a9,-1,218}, 2969 {0x1ac,0x1ac,-1,1}, 2970 {0x1ae,0x1ae,-1,218}, 2971 {0x1af,0x1af,-1,1}, 2972 {0x1b1,0x1b2,1,217}, 2973 {0x1b3,0x1b5,2,1}, 2974 {0x1b7,0x1b7,-1,219}, 2975 {0x1b8,0x1bc,4,1}, 2976 {0x1c4,0x1c4,-1,2}, 2977 {0x1c5,0x1c5,-1,1}, 2978 {0x1c7,0x1c7,-1,2}, 2979 {0x1c8,0x1c8,-1,1}, 2980 {0x1ca,0x1ca,-1,2}, 2981 {0x1cb,0x1db,2,1}, 2982 {0x1de,0x1ee,2,1}, 2983 {0x1f1,0x1f1,-1,2}, 2984 {0x1f2,0x1f4,2,1}, 2985 {0x1f6,0x1f6,-1,-97}, 2986 {0x1f7,0x1f7,-1,-56}, 2987 {0x1f8,0x21e,2,1}, 2988 {0x220,0x220,-1,-130}, 2989 {0x222,0x232,2,1}, 2990 {0x23a,0x23a,-1,10795}, 2991 {0x23b,0x23b,-1,1}, 2992 {0x23d,0x23d,-1,-163}, 2993 {0x23e,0x23e,-1,10792}, 2994 {0x241,0x241,-1,1}, 2995 {0x243,0x243,-1,-195}, 2996 {0x244,0x244,-1,69}, 2997 {0x245,0x245,-1,71}, 2998 {0x246,0x24e,2,1}, 2999 {0x345,0x345,-1,116}, 3000 {0x370,0x372,2,1}, 3001 {0x376,0x376,-1,1}, 3002 {0x37f,0x37f,-1,116}, 3003 {0x386,0x386,-1,38}, 3004 {0x388,0x38a,1,37}, 3005 {0x38c,0x38c,-1,64}, 3006 {0x38e,0x38f,1,63}, 3007 {0x391,0x3a1,1,32}, 3008 {0x3a3,0x3ab,1,32}, 3009 {0x3c2,0x3c2,-1,1}, 3010 {0x3cf,0x3cf,-1,8}, 3011 {0x3d0,0x3d0,-1,-30}, 3012 {0x3d1,0x3d1,-1,-25}, 3013 {0x3d5,0x3d5,-1,-15}, 3014 {0x3d6,0x3d6,-1,-22}, 3015 {0x3d8,0x3ee,2,1}, 3016 {0x3f0,0x3f0,-1,-54}, 3017 {0x3f1,0x3f1,-1,-48}, 3018 {0x3f4,0x3f4,-1,-60}, 3019 {0x3f5,0x3f5,-1,-64}, 3020 {0x3f7,0x3f7,-1,1}, 3021 {0x3f9,0x3f9,-1,-7}, 3022 {0x3fa,0x3fa,-1,1}, 3023 {0x3fd,0x3ff,1,-130}, 3024 {0x400,0x40f,1,80}, 3025 {0x410,0x42f,1,32}, 3026 {0x460,0x480,2,1}, 3027 {0x48a,0x4be,2,1}, 3028 {0x4c0,0x4c0,-1,15}, 3029 {0x4c1,0x4cd,2,1}, 3030 {0x4d0,0x52e,2,1}, 3031 {0x531,0x556,1,48}, 3032 {0x10a0,0x10c5,1,7264}, 3033 {0x10c7,0x10cd,6,7264}, 3034 {0x13f8,0x13fd,1,-8}, 3035 {0x1c80,0x1c80,-1,-6222}, 3036 {0x1c81,0x1c81,-1,-6221}, 3037 {0x1c82,0x1c82,-1,-6212}, 3038 {0x1c83,0x1c84,1,-6210}, 3039 {0x1c85,0x1c85,-1,-6211}, 3040 {0x1c86,0x1c86,-1,-6204}, 3041 {0x1c87,0x1c87,-1,-6180}, 3042 {0x1c88,0x1c88,-1,35267}, 3043 {0x1c90,0x1cba,1,-3008}, 3044 {0x1cbd,0x1cbf,1,-3008}, 3045 {0x1e00,0x1e94,2,1}, 3046 {0x1e9b,0x1e9b,-1,-58}, 3047 {0x1e9e,0x1e9e,-1,-7615}, 3048 {0x1ea0,0x1efe,2,1}, 3049 {0x1f08,0x1f0f,1,-8}, 3050 {0x1f18,0x1f1d,1,-8}, 3051 {0x1f28,0x1f2f,1,-8}, 3052 {0x1f38,0x1f3f,1,-8}, 3053 {0x1f48,0x1f4d,1,-8}, 3054 {0x1f59,0x1f5f,2,-8}, 3055 {0x1f68,0x1f6f,1,-8}, 3056 {0x1f88,0x1f8f,1,-8}, 3057 {0x1f98,0x1f9f,1,-8}, 3058 {0x1fa8,0x1faf,1,-8}, 3059 {0x1fb8,0x1fb9,1,-8}, 3060 {0x1fba,0x1fbb,1,-74}, 3061 {0x1fbc,0x1fbc,-1,-9}, 3062 {0x1fbe,0x1fbe,-1,-7173}, 3063 {0x1fc8,0x1fcb,1,-86}, 3064 {0x1fcc,0x1fcc,-1,-9}, 3065 {0x1fd8,0x1fd9,1,-8}, 3066 {0x1fda,0x1fdb,1,-100}, 3067 {0x1fe8,0x1fe9,1,-8}, 3068 {0x1fea,0x1feb,1,-112}, 3069 {0x1fec,0x1fec,-1,-7}, 3070 {0x1ff8,0x1ff9,1,-128}, 3071 {0x1ffa,0x1ffb,1,-126}, 3072 {0x1ffc,0x1ffc,-1,-9}, 3073 {0x2126,0x2126,-1,-7517}, 3074 {0x212a,0x212a,-1,-8383}, 3075 {0x212b,0x212b,-1,-8262}, 3076 {0x2132,0x2132,-1,28}, 3077 {0x2160,0x216f,1,16}, 3078 {0x2183,0x2183,-1,1}, 3079 {0x24b6,0x24cf,1,26}, 3080 {0x2c00,0x2c2e,1,48}, 3081 {0x2c60,0x2c60,-1,1}, 3082 {0x2c62,0x2c62,-1,-10743}, 3083 {0x2c63,0x2c63,-1,-3814}, 3084 {0x2c64,0x2c64,-1,-10727}, 3085 {0x2c67,0x2c6b,2,1}, 3086 {0x2c6d,0x2c6d,-1,-10780}, 3087 {0x2c6e,0x2c6e,-1,-10749}, 3088 {0x2c6f,0x2c6f,-1,-10783}, 3089 {0x2c70,0x2c70,-1,-10782}, 3090 {0x2c72,0x2c75,3,1}, 3091 {0x2c7e,0x2c7f,1,-10815}, 3092 {0x2c80,0x2ce2,2,1}, 3093 {0x2ceb,0x2ced,2,1}, 3094 {0x2cf2,0xa640,31054,1}, 3095 {0xa642,0xa66c,2,1}, 3096 {0xa680,0xa69a,2,1}, 3097 {0xa722,0xa72e,2,1}, 3098 {0xa732,0xa76e,2,1}, 3099 {0xa779,0xa77b,2,1}, 3100 {0xa77d,0xa77d,-1,-35332}, 3101 {0xa77e,0xa786,2,1}, 3102 {0xa78b,0xa78b,-1,1}, 3103 {0xa78d,0xa78d,-1,-42280}, 3104 {0xa790,0xa792,2,1}, 3105 {0xa796,0xa7a8,2,1}, 3106 {0xa7aa,0xa7aa,-1,-42308}, 3107 {0xa7ab,0xa7ab,-1,-42319}, 3108 {0xa7ac,0xa7ac,-1,-42315}, 3109 {0xa7ad,0xa7ad,-1,-42305}, 3110 {0xa7ae,0xa7ae,-1,-42308}, 3111 {0xa7b0,0xa7b0,-1,-42258}, 3112 {0xa7b1,0xa7b1,-1,-42282}, 3113 {0xa7b2,0xa7b2,-1,-42261}, 3114 {0xa7b3,0xa7b3,-1,928}, 3115 {0xa7b4,0xa7be,2,1}, 3116 {0xa7c2,0xa7c2,-1,1}, 3117 {0xa7c4,0xa7c4,-1,-48}, 3118 {0xa7c5,0xa7c5,-1,-42307}, 3119 {0xa7c6,0xa7c6,-1,-35384}, 3120 {0xa7c7,0xa7c9,2,1}, 3121 {0xa7f5,0xa7f5,-1,1}, 3122 {0xab70,0xabbf,1,-38864}, 3123 {0xff21,0xff3a,1,32}, 3124 {0x10400,0x10427,1,40}, 3125 {0x104b0,0x104d3,1,40}, 3126 {0x10c80,0x10cb2,1,64}, 3127 {0x118a0,0x118bf,1,32}, 3128 {0x16e40,0x16e5f,1,32}, 3129 {0x1e900,0x1e921,1,34} 3130 }; 3131 3132 /* 3133 * Generic conversion function for case operations. 3134 * Return the converted equivalent of "a", which is a UCS-4 character. Use 3135 * the given conversion "table". Uses binary search on "table". 3136 */ 3137 static int 3138 utf_convert( 3139 int a, 3140 convertStruct table[], 3141 int tableSize) 3142 { 3143 int start, mid, end; // indices into table 3144 int entries = tableSize / sizeof(convertStruct); 3145 3146 start = 0; 3147 end = entries; 3148 while (start < end) 3149 { 3150 // need to search further 3151 mid = (end + start) / 2; 3152 if (table[mid].rangeEnd < a) 3153 start = mid + 1; 3154 else 3155 end = mid; 3156 } 3157 if (start < entries 3158 && table[start].rangeStart <= a 3159 && a <= table[start].rangeEnd 3160 && (a - table[start].rangeStart) % table[start].step == 0) 3161 return (a + table[start].offset); 3162 else 3163 return a; 3164 } 3165 3166 /* 3167 * Return the folded-case equivalent of "a", which is a UCS-4 character. Uses 3168 * simple case folding. 3169 */ 3170 int 3171 utf_fold(int a) 3172 { 3173 if (a < 0x80) 3174 // be fast for ASCII 3175 return a >= 0x41 && a <= 0x5a ? a + 32 : a; 3176 return utf_convert(a, foldCase, (int)sizeof(foldCase)); 3177 } 3178 3179 static convertStruct toLower[] = 3180 { 3181 {0x41,0x5a,1,32}, 3182 {0xc0,0xd6,1,32}, 3183 {0xd8,0xde,1,32}, 3184 {0x100,0x12e,2,1}, 3185 {0x130,0x130,-1,-199}, 3186 {0x132,0x136,2,1}, 3187 {0x139,0x147,2,1}, 3188 {0x14a,0x176,2,1}, 3189 {0x178,0x178,-1,-121}, 3190 {0x179,0x17d,2,1}, 3191 {0x181,0x181,-1,210}, 3192 {0x182,0x184,2,1}, 3193 {0x186,0x186,-1,206}, 3194 {0x187,0x187,-1,1}, 3195 {0x189,0x18a,1,205}, 3196 {0x18b,0x18b,-1,1}, 3197 {0x18e,0x18e,-1,79}, 3198 {0x18f,0x18f,-1,202}, 3199 {0x190,0x190,-1,203}, 3200 {0x191,0x191,-1,1}, 3201 {0x193,0x193,-1,205}, 3202 {0x194,0x194,-1,207}, 3203 {0x196,0x196,-1,211}, 3204 {0x197,0x197,-1,209}, 3205 {0x198,0x198,-1,1}, 3206 {0x19c,0x19c,-1,211}, 3207 {0x19d,0x19d,-1,213}, 3208 {0x19f,0x19f,-1,214}, 3209 {0x1a0,0x1a4,2,1}, 3210 {0x1a6,0x1a6,-1,218}, 3211 {0x1a7,0x1a7,-1,1}, 3212 {0x1a9,0x1a9,-1,218}, 3213 {0x1ac,0x1ac,-1,1}, 3214 {0x1ae,0x1ae,-1,218}, 3215 {0x1af,0x1af,-1,1}, 3216 {0x1b1,0x1b2,1,217}, 3217 {0x1b3,0x1b5,2,1}, 3218 {0x1b7,0x1b7,-1,219}, 3219 {0x1b8,0x1bc,4,1}, 3220 {0x1c4,0x1c4,-1,2}, 3221 {0x1c5,0x1c5,-1,1}, 3222 {0x1c7,0x1c7,-1,2}, 3223 {0x1c8,0x1c8,-1,1}, 3224 {0x1ca,0x1ca,-1,2}, 3225 {0x1cb,0x1db,2,1}, 3226 {0x1de,0x1ee,2,1}, 3227 {0x1f1,0x1f1,-1,2}, 3228 {0x1f2,0x1f4,2,1}, 3229 {0x1f6,0x1f6,-1,-97}, 3230 {0x1f7,0x1f7,-1,-56}, 3231 {0x1f8,0x21e,2,1}, 3232 {0x220,0x220,-1,-130}, 3233 {0x222,0x232,2,1}, 3234 {0x23a,0x23a,-1,10795}, 3235 {0x23b,0x23b,-1,1}, 3236 {0x23d,0x23d,-1,-163}, 3237 {0x23e,0x23e,-1,10792}, 3238 {0x241,0x241,-1,1}, 3239 {0x243,0x243,-1,-195}, 3240 {0x244,0x244,-1,69}, 3241 {0x245,0x245,-1,71}, 3242 {0x246,0x24e,2,1}, 3243 {0x370,0x372,2,1}, 3244 {0x376,0x376,-1,1}, 3245 {0x37f,0x37f,-1,116}, 3246 {0x386,0x386,-1,38}, 3247 {0x388,0x38a,1,37}, 3248 {0x38c,0x38c,-1,64}, 3249 {0x38e,0x38f,1,63}, 3250 {0x391,0x3a1,1,32}, 3251 {0x3a3,0x3ab,1,32}, 3252 {0x3cf,0x3cf,-1,8}, 3253 {0x3d8,0x3ee,2,1}, 3254 {0x3f4,0x3f4,-1,-60}, 3255 {0x3f7,0x3f7,-1,1}, 3256 {0x3f9,0x3f9,-1,-7}, 3257 {0x3fa,0x3fa,-1,1}, 3258 {0x3fd,0x3ff,1,-130}, 3259 {0x400,0x40f,1,80}, 3260 {0x410,0x42f,1,32}, 3261 {0x460,0x480,2,1}, 3262 {0x48a,0x4be,2,1}, 3263 {0x4c0,0x4c0,-1,15}, 3264 {0x4c1,0x4cd,2,1}, 3265 {0x4d0,0x52e,2,1}, 3266 {0x531,0x556,1,48}, 3267 {0x10a0,0x10c5,1,7264}, 3268 {0x10c7,0x10cd,6,7264}, 3269 {0x13a0,0x13ef,1,38864}, 3270 {0x13f0,0x13f5,1,8}, 3271 {0x1c90,0x1cba,1,-3008}, 3272 {0x1cbd,0x1cbf,1,-3008}, 3273 {0x1e00,0x1e94,2,1}, 3274 {0x1e9e,0x1e9e,-1,-7615}, 3275 {0x1ea0,0x1efe,2,1}, 3276 {0x1f08,0x1f0f,1,-8}, 3277 {0x1f18,0x1f1d,1,-8}, 3278 {0x1f28,0x1f2f,1,-8}, 3279 {0x1f38,0x1f3f,1,-8}, 3280 {0x1f48,0x1f4d,1,-8}, 3281 {0x1f59,0x1f5f,2,-8}, 3282 {0x1f68,0x1f6f,1,-8}, 3283 {0x1f88,0x1f8f,1,-8}, 3284 {0x1f98,0x1f9f,1,-8}, 3285 {0x1fa8,0x1faf,1,-8}, 3286 {0x1fb8,0x1fb9,1,-8}, 3287 {0x1fba,0x1fbb,1,-74}, 3288 {0x1fbc,0x1fbc,-1,-9}, 3289 {0x1fc8,0x1fcb,1,-86}, 3290 {0x1fcc,0x1fcc,-1,-9}, 3291 {0x1fd8,0x1fd9,1,-8}, 3292 {0x1fda,0x1fdb,1,-100}, 3293 {0x1fe8,0x1fe9,1,-8}, 3294 {0x1fea,0x1feb,1,-112}, 3295 {0x1fec,0x1fec,-1,-7}, 3296 {0x1ff8,0x1ff9,1,-128}, 3297 {0x1ffa,0x1ffb,1,-126}, 3298 {0x1ffc,0x1ffc,-1,-9}, 3299 {0x2126,0x2126,-1,-7517}, 3300 {0x212a,0x212a,-1,-8383}, 3301 {0x212b,0x212b,-1,-8262}, 3302 {0x2132,0x2132,-1,28}, 3303 {0x2160,0x216f,1,16}, 3304 {0x2183,0x2183,-1,1}, 3305 {0x24b6,0x24cf,1,26}, 3306 {0x2c00,0x2c2e,1,48}, 3307 {0x2c60,0x2c60,-1,1}, 3308 {0x2c62,0x2c62,-1,-10743}, 3309 {0x2c63,0x2c63,-1,-3814}, 3310 {0x2c64,0x2c64,-1,-10727}, 3311 {0x2c67,0x2c6b,2,1}, 3312 {0x2c6d,0x2c6d,-1,-10780}, 3313 {0x2c6e,0x2c6e,-1,-10749}, 3314 {0x2c6f,0x2c6f,-1,-10783}, 3315 {0x2c70,0x2c70,-1,-10782}, 3316 {0x2c72,0x2c75,3,1}, 3317 {0x2c7e,0x2c7f,1,-10815}, 3318 {0x2c80,0x2ce2,2,1}, 3319 {0x2ceb,0x2ced,2,1}, 3320 {0x2cf2,0xa640,31054,1}, 3321 {0xa642,0xa66c,2,1}, 3322 {0xa680,0xa69a,2,1}, 3323 {0xa722,0xa72e,2,1}, 3324 {0xa732,0xa76e,2,1}, 3325 {0xa779,0xa77b,2,1}, 3326 {0xa77d,0xa77d,-1,-35332}, 3327 {0xa77e,0xa786,2,1}, 3328 {0xa78b,0xa78b,-1,1}, 3329 {0xa78d,0xa78d,-1,-42280}, 3330 {0xa790,0xa792,2,1}, 3331 {0xa796,0xa7a8,2,1}, 3332 {0xa7aa,0xa7aa,-1,-42308}, 3333 {0xa7ab,0xa7ab,-1,-42319}, 3334 {0xa7ac,0xa7ac,-1,-42315}, 3335 {0xa7ad,0xa7ad,-1,-42305}, 3336 {0xa7ae,0xa7ae,-1,-42308}, 3337 {0xa7b0,0xa7b0,-1,-42258}, 3338 {0xa7b1,0xa7b1,-1,-42282}, 3339 {0xa7b2,0xa7b2,-1,-42261}, 3340 {0xa7b3,0xa7b3,-1,928}, 3341 {0xa7b4,0xa7be,2,1}, 3342 {0xa7c2,0xa7c2,-1,1}, 3343 {0xa7c4,0xa7c4,-1,-48}, 3344 {0xa7c5,0xa7c5,-1,-42307}, 3345 {0xa7c6,0xa7c6,-1,-35384}, 3346 {0xa7c7,0xa7c9,2,1}, 3347 {0xa7f5,0xa7f5,-1,1}, 3348 {0xff21,0xff3a,1,32}, 3349 {0x10400,0x10427,1,40}, 3350 {0x104b0,0x104d3,1,40}, 3351 {0x10c80,0x10cb2,1,64}, 3352 {0x118a0,0x118bf,1,32}, 3353 {0x16e40,0x16e5f,1,32}, 3354 {0x1e900,0x1e921,1,34} 3355 }; 3356 3357 static convertStruct toUpper[] = 3358 { 3359 {0x61,0x7a,1,-32}, 3360 {0xb5,0xb5,-1,743}, 3361 {0xe0,0xf6,1,-32}, 3362 {0xf8,0xfe,1,-32}, 3363 {0xff,0xff,-1,121}, 3364 {0x101,0x12f,2,-1}, 3365 {0x131,0x131,-1,-232}, 3366 {0x133,0x137,2,-1}, 3367 {0x13a,0x148,2,-1}, 3368 {0x14b,0x177,2,-1}, 3369 {0x17a,0x17e,2,-1}, 3370 {0x17f,0x17f,-1,-300}, 3371 {0x180,0x180,-1,195}, 3372 {0x183,0x185,2,-1}, 3373 {0x188,0x18c,4,-1}, 3374 {0x192,0x192,-1,-1}, 3375 {0x195,0x195,-1,97}, 3376 {0x199,0x199,-1,-1}, 3377 {0x19a,0x19a,-1,163}, 3378 {0x19e,0x19e,-1,130}, 3379 {0x1a1,0x1a5,2,-1}, 3380 {0x1a8,0x1ad,5,-1}, 3381 {0x1b0,0x1b4,4,-1}, 3382 {0x1b6,0x1b9,3,-1}, 3383 {0x1bd,0x1bd,-1,-1}, 3384 {0x1bf,0x1bf,-1,56}, 3385 {0x1c5,0x1c5,-1,-1}, 3386 {0x1c6,0x1c6,-1,-2}, 3387 {0x1c8,0x1c8,-1,-1}, 3388 {0x1c9,0x1c9,-1,-2}, 3389 {0x1cb,0x1cb,-1,-1}, 3390 {0x1cc,0x1cc,-1,-2}, 3391 {0x1ce,0x1dc,2,-1}, 3392 {0x1dd,0x1dd,-1,-79}, 3393 {0x1df,0x1ef,2,-1}, 3394 {0x1f2,0x1f2,-1,-1}, 3395 {0x1f3,0x1f3,-1,-2}, 3396 {0x1f5,0x1f9,4,-1}, 3397 {0x1fb,0x21f,2,-1}, 3398 {0x223,0x233,2,-1}, 3399 {0x23c,0x23c,-1,-1}, 3400 {0x23f,0x240,1,10815}, 3401 {0x242,0x247,5,-1}, 3402 {0x249,0x24f,2,-1}, 3403 {0x250,0x250,-1,10783}, 3404 {0x251,0x251,-1,10780}, 3405 {0x252,0x252,-1,10782}, 3406 {0x253,0x253,-1,-210}, 3407 {0x254,0x254,-1,-206}, 3408 {0x256,0x257,1,-205}, 3409 {0x259,0x259,-1,-202}, 3410 {0x25b,0x25b,-1,-203}, 3411 {0x25c,0x25c,-1,42319}, 3412 {0x260,0x260,-1,-205}, 3413 {0x261,0x261,-1,42315}, 3414 {0x263,0x263,-1,-207}, 3415 {0x265,0x265,-1,42280}, 3416 {0x266,0x266,-1,42308}, 3417 {0x268,0x268,-1,-209}, 3418 {0x269,0x269,-1,-211}, 3419 {0x26a,0x26a,-1,42308}, 3420 {0x26b,0x26b,-1,10743}, 3421 {0x26c,0x26c,-1,42305}, 3422 {0x26f,0x26f,-1,-211}, 3423 {0x271,0x271,-1,10749}, 3424 {0x272,0x272,-1,-213}, 3425 {0x275,0x275,-1,-214}, 3426 {0x27d,0x27d,-1,10727}, 3427 {0x280,0x280,-1,-218}, 3428 {0x282,0x282,-1,42307}, 3429 {0x283,0x283,-1,-218}, 3430 {0x287,0x287,-1,42282}, 3431 {0x288,0x288,-1,-218}, 3432 {0x289,0x289,-1,-69}, 3433 {0x28a,0x28b,1,-217}, 3434 {0x28c,0x28c,-1,-71}, 3435 {0x292,0x292,-1,-219}, 3436 {0x29d,0x29d,-1,42261}, 3437 {0x29e,0x29e,-1,42258}, 3438 {0x345,0x345,-1,84}, 3439 {0x371,0x373,2,-1}, 3440 {0x377,0x377,-1,-1}, 3441 {0x37b,0x37d,1,130}, 3442 {0x3ac,0x3ac,-1,-38}, 3443 {0x3ad,0x3af,1,-37}, 3444 {0x3b1,0x3c1,1,-32}, 3445 {0x3c2,0x3c2,-1,-31}, 3446 {0x3c3,0x3cb,1,-32}, 3447 {0x3cc,0x3cc,-1,-64}, 3448 {0x3cd,0x3ce,1,-63}, 3449 {0x3d0,0x3d0,-1,-62}, 3450 {0x3d1,0x3d1,-1,-57}, 3451 {0x3d5,0x3d5,-1,-47}, 3452 {0x3d6,0x3d6,-1,-54}, 3453 {0x3d7,0x3d7,-1,-8}, 3454 {0x3d9,0x3ef,2,-1}, 3455 {0x3f0,0x3f0,-1,-86}, 3456 {0x3f1,0x3f1,-1,-80}, 3457 {0x3f2,0x3f2,-1,7}, 3458 {0x3f3,0x3f3,-1,-116}, 3459 {0x3f5,0x3f5,-1,-96}, 3460 {0x3f8,0x3fb,3,-1}, 3461 {0x430,0x44f,1,-32}, 3462 {0x450,0x45f,1,-80}, 3463 {0x461,0x481,2,-1}, 3464 {0x48b,0x4bf,2,-1}, 3465 {0x4c2,0x4ce,2,-1}, 3466 {0x4cf,0x4cf,-1,-15}, 3467 {0x4d1,0x52f,2,-1}, 3468 {0x561,0x586,1,-48}, 3469 {0x10d0,0x10fa,1,3008}, 3470 {0x10fd,0x10ff,1,3008}, 3471 {0x13f8,0x13fd,1,-8}, 3472 {0x1c80,0x1c80,-1,-6254}, 3473 {0x1c81,0x1c81,-1,-6253}, 3474 {0x1c82,0x1c82,-1,-6244}, 3475 {0x1c83,0x1c84,1,-6242}, 3476 {0x1c85,0x1c85,-1,-6243}, 3477 {0x1c86,0x1c86,-1,-6236}, 3478 {0x1c87,0x1c87,-1,-6181}, 3479 {0x1c88,0x1c88,-1,35266}, 3480 {0x1d79,0x1d79,-1,35332}, 3481 {0x1d7d,0x1d7d,-1,3814}, 3482 {0x1d8e,0x1d8e,-1,35384}, 3483 {0x1e01,0x1e95,2,-1}, 3484 {0x1e9b,0x1e9b,-1,-59}, 3485 {0x1ea1,0x1eff,2,-1}, 3486 {0x1f00,0x1f07,1,8}, 3487 {0x1f10,0x1f15,1,8}, 3488 {0x1f20,0x1f27,1,8}, 3489 {0x1f30,0x1f37,1,8}, 3490 {0x1f40,0x1f45,1,8}, 3491 {0x1f51,0x1f57,2,8}, 3492 {0x1f60,0x1f67,1,8}, 3493 {0x1f70,0x1f71,1,74}, 3494 {0x1f72,0x1f75,1,86}, 3495 {0x1f76,0x1f77,1,100}, 3496 {0x1f78,0x1f79,1,128}, 3497 {0x1f7a,0x1f7b,1,112}, 3498 {0x1f7c,0x1f7d,1,126}, 3499 {0x1f80,0x1f87,1,8}, 3500 {0x1f90,0x1f97,1,8}, 3501 {0x1fa0,0x1fa7,1,8}, 3502 {0x1fb0,0x1fb1,1,8}, 3503 {0x1fb3,0x1fb3,-1,9}, 3504 {0x1fbe,0x1fbe,-1,-7205}, 3505 {0x1fc3,0x1fc3,-1,9}, 3506 {0x1fd0,0x1fd1,1,8}, 3507 {0x1fe0,0x1fe1,1,8}, 3508 {0x1fe5,0x1fe5,-1,7}, 3509 {0x1ff3,0x1ff3,-1,9}, 3510 {0x214e,0x214e,-1,-28}, 3511 {0x2170,0x217f,1,-16}, 3512 {0x2184,0x2184,-1,-1}, 3513 {0x24d0,0x24e9,1,-26}, 3514 {0x2c30,0x2c5e,1,-48}, 3515 {0x2c61,0x2c61,-1,-1}, 3516 {0x2c65,0x2c65,-1,-10795}, 3517 {0x2c66,0x2c66,-1,-10792}, 3518 {0x2c68,0x2c6c,2,-1}, 3519 {0x2c73,0x2c76,3,-1}, 3520 {0x2c81,0x2ce3,2,-1}, 3521 {0x2cec,0x2cee,2,-1}, 3522 {0x2cf3,0x2cf3,-1,-1}, 3523 {0x2d00,0x2d25,1,-7264}, 3524 {0x2d27,0x2d2d,6,-7264}, 3525 {0xa641,0xa66d,2,-1}, 3526 {0xa681,0xa69b,2,-1}, 3527 {0xa723,0xa72f,2,-1}, 3528 {0xa733,0xa76f,2,-1}, 3529 {0xa77a,0xa77c,2,-1}, 3530 {0xa77f,0xa787,2,-1}, 3531 {0xa78c,0xa791,5,-1}, 3532 {0xa793,0xa793,-1,-1}, 3533 {0xa794,0xa794,-1,48}, 3534 {0xa797,0xa7a9,2,-1}, 3535 {0xa7b5,0xa7bf,2,-1}, 3536 {0xa7c3,0xa7c8,5,-1}, 3537 {0xa7ca,0xa7f6,44,-1}, 3538 {0xab53,0xab53,-1,-928}, 3539 {0xab70,0xabbf,1,-38864}, 3540 {0xff41,0xff5a,1,-32}, 3541 {0x10428,0x1044f,1,-40}, 3542 {0x104d8,0x104fb,1,-40}, 3543 {0x10cc0,0x10cf2,1,-64}, 3544 {0x118c0,0x118df,1,-32}, 3545 {0x16e60,0x16e7f,1,-32}, 3546 {0x1e922,0x1e943,1,-34} 3547 }; 3548 3549 /* 3550 * Return the upper-case equivalent of "a", which is a UCS-4 character. Use 3551 * simple case folding. 3552 */ 3553 int 3554 utf_toupper(int a) 3555 { 3556 // If 'casemap' contains "keepascii" use ASCII style toupper(). 3557 if (a < 128 && (cmp_flags & CMP_KEEPASCII)) 3558 return TOUPPER_ASC(a); 3559 3560 #if defined(HAVE_TOWUPPER) && defined(__STDC_ISO_10646__) 3561 // If towupper() is available and handles Unicode, use it. 3562 if (!(cmp_flags & CMP_INTERNAL)) 3563 return towupper(a); 3564 #endif 3565 3566 // For characters below 128 use locale sensitive toupper(). 3567 if (a < 128) 3568 return TOUPPER_LOC(a); 3569 3570 // For any other characters use the above mapping table. 3571 return utf_convert(a, toUpper, (int)sizeof(toUpper)); 3572 } 3573 3574 int 3575 utf_islower(int a) 3576 { 3577 // German sharp s is lower case but has no upper case equivalent. 3578 return (utf_toupper(a) != a) || a == 0xdf; 3579 } 3580 3581 /* 3582 * Return the lower-case equivalent of "a", which is a UCS-4 character. Use 3583 * simple case folding. 3584 */ 3585 int 3586 utf_tolower(int a) 3587 { 3588 // If 'casemap' contains "keepascii" use ASCII style tolower(). 3589 if (a < 128 && (cmp_flags & CMP_KEEPASCII)) 3590 return TOLOWER_ASC(a); 3591 3592 #if defined(HAVE_TOWLOWER) && defined(__STDC_ISO_10646__) 3593 // If towlower() is available and handles Unicode, use it. 3594 if (!(cmp_flags & CMP_INTERNAL)) 3595 return towlower(a); 3596 #endif 3597 3598 // For characters below 128 use locale sensitive tolower(). 3599 if (a < 128) 3600 return TOLOWER_LOC(a); 3601 3602 // For any other characters use the above mapping table. 3603 return utf_convert(a, toLower, (int)sizeof(toLower)); 3604 } 3605 3606 int 3607 utf_isupper(int a) 3608 { 3609 return (utf_tolower(a) != a); 3610 } 3611 3612 static int 3613 utf_strnicmp( 3614 char_u *s1, 3615 char_u *s2, 3616 size_t n1, 3617 size_t n2) 3618 { 3619 int c1, c2, cdiff; 3620 char_u buffer[6]; 3621 3622 for (;;) 3623 { 3624 c1 = utf_safe_read_char_adv(&s1, &n1); 3625 c2 = utf_safe_read_char_adv(&s2, &n2); 3626 3627 if (c1 <= 0 || c2 <= 0) 3628 break; 3629 3630 if (c1 == c2) 3631 continue; 3632 3633 cdiff = utf_fold(c1) - utf_fold(c2); 3634 if (cdiff != 0) 3635 return cdiff; 3636 } 3637 3638 // some string ended or has an incomplete/illegal character sequence 3639 3640 if (c1 == 0 || c2 == 0) 3641 { 3642 // some string ended. shorter string is smaller 3643 if (c1 == 0 && c2 == 0) 3644 return 0; 3645 return c1 == 0 ? -1 : 1; 3646 } 3647 3648 // Continue with bytewise comparison to produce some result that 3649 // would make comparison operations involving this function transitive. 3650 // 3651 // If only one string had an error, comparison should be made with 3652 // folded version of the other string. In this case it is enough 3653 // to fold just one character to determine the result of comparison. 3654 3655 if (c1 != -1 && c2 == -1) 3656 { 3657 n1 = utf_char2bytes(utf_fold(c1), buffer); 3658 s1 = buffer; 3659 } 3660 else if (c2 != -1 && c1 == -1) 3661 { 3662 n2 = utf_char2bytes(utf_fold(c2), buffer); 3663 s2 = buffer; 3664 } 3665 3666 while (n1 > 0 && n2 > 0 && *s1 != NUL && *s2 != NUL) 3667 { 3668 cdiff = (int)(*s1) - (int)(*s2); 3669 if (cdiff != 0) 3670 return cdiff; 3671 3672 s1++; 3673 s2++; 3674 n1--; 3675 n2--; 3676 } 3677 3678 if (n1 > 0 && *s1 == NUL) 3679 n1 = 0; 3680 if (n2 > 0 && *s2 == NUL) 3681 n2 = 0; 3682 3683 if (n1 == 0 && n2 == 0) 3684 return 0; 3685 return n1 == 0 ? -1 : 1; 3686 } 3687 3688 /* 3689 * Version of strnicmp() that handles multi-byte characters. 3690 * Needed for Big5, Shift-JIS and UTF-8 encoding. Other DBCS encodings can 3691 * probably use strnicmp(), because there are no ASCII characters in the 3692 * second byte. 3693 * Returns zero if s1 and s2 are equal (ignoring case), the difference between 3694 * two characters otherwise. 3695 */ 3696 int 3697 mb_strnicmp(char_u *s1, char_u *s2, size_t nn) 3698 { 3699 int i, l; 3700 int cdiff; 3701 int n = (int)nn; 3702 3703 if (enc_utf8) 3704 { 3705 return utf_strnicmp(s1, s2, nn, nn); 3706 } 3707 else 3708 { 3709 for (i = 0; i < n; i += l) 3710 { 3711 if (s1[i] == NUL && s2[i] == NUL) // both strings end 3712 return 0; 3713 3714 l = (*mb_ptr2len)(s1 + i); 3715 if (l <= 1) 3716 { 3717 // Single byte: first check normally, then with ignore case. 3718 if (s1[i] != s2[i]) 3719 { 3720 cdiff = MB_TOLOWER(s1[i]) - MB_TOLOWER(s2[i]); 3721 if (cdiff != 0) 3722 return cdiff; 3723 } 3724 } 3725 else 3726 { 3727 // For non-Unicode multi-byte don't ignore case. 3728 if (l > n - i) 3729 l = n - i; 3730 cdiff = STRNCMP(s1 + i, s2 + i, l); 3731 if (cdiff != 0) 3732 return cdiff; 3733 } 3734 } 3735 } 3736 return 0; 3737 } 3738 3739 /* 3740 * "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what 3741 * 'encoding' has been set to. 3742 */ 3743 void 3744 show_utf8(void) 3745 { 3746 int len; 3747 int rlen = 0; 3748 char_u *line; 3749 int clen; 3750 int i; 3751 3752 // Get the byte length of the char under the cursor, including composing 3753 // characters. 3754 line = ml_get_cursor(); 3755 len = utfc_ptr2len(line); 3756 if (len == 0) 3757 { 3758 msg("NUL"); 3759 return; 3760 } 3761 3762 clen = 0; 3763 for (i = 0; i < len; ++i) 3764 { 3765 if (clen == 0) 3766 { 3767 // start of (composing) character, get its length 3768 if (i > 0) 3769 { 3770 STRCPY(IObuff + rlen, "+ "); 3771 rlen += 2; 3772 } 3773 clen = utf_ptr2len(line + i); 3774 } 3775 sprintf((char *)IObuff + rlen, "%02x ", 3776 (line[i] == NL) ? NUL : line[i]); // NUL is stored as NL 3777 --clen; 3778 rlen += (int)STRLEN(IObuff + rlen); 3779 if (rlen > IOSIZE - 20) 3780 break; 3781 } 3782 3783 msg((char *)IObuff); 3784 } 3785 3786 /* 3787 * mb_head_off() function pointer. 3788 * Return offset from "p" to the first byte of the character it points into. 3789 * If "p" points to the NUL at the end of the string return 0. 3790 * Returns 0 when already at the first byte of a character. 3791 */ 3792 int 3793 latin_head_off(char_u *base UNUSED, char_u *p UNUSED) 3794 { 3795 return 0; 3796 } 3797 3798 static int 3799 dbcs_head_off(char_u *base, char_u *p) 3800 { 3801 char_u *q; 3802 3803 // It can't be a trailing byte when not using DBCS, at the start of the 3804 // string or the previous byte can't start a double-byte. 3805 if (p <= base || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL) 3806 return 0; 3807 3808 // This is slow: need to start at the base and go forward until the 3809 // byte we are looking for. Return 1 when we went past it, 0 otherwise. 3810 q = base; 3811 while (q < p) 3812 q += dbcs_ptr2len(q); 3813 return (q == p) ? 0 : 1; 3814 } 3815 3816 /* 3817 * Special version of dbcs_head_off() that works for ScreenLines[], where 3818 * single-width DBCS_JPNU characters are stored separately. 3819 */ 3820 int 3821 dbcs_screen_head_off(char_u *base, char_u *p) 3822 { 3823 char_u *q; 3824 3825 // It can't be a trailing byte when not using DBCS, at the start of the 3826 // string or the previous byte can't start a double-byte. 3827 // For euc-jp an 0x8e byte in the previous cell always means we have a 3828 // lead byte in the current cell. 3829 if (p <= base 3830 || (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e) 3831 || MB_BYTE2LEN(p[-1]) == 1 3832 || *p == NUL) 3833 return 0; 3834 3835 // This is slow: need to start at the base and go forward until the 3836 // byte we are looking for. Return 1 when we went past it, 0 otherwise. 3837 // For DBCS_JPNU look out for 0x8e, which means the second byte is not 3838 // stored as the next byte. 3839 q = base; 3840 while (q < p) 3841 { 3842 if (enc_dbcs == DBCS_JPNU && *q == 0x8e) 3843 ++q; 3844 else 3845 q += dbcs_ptr2len(q); 3846 } 3847 return (q == p) ? 0 : 1; 3848 } 3849 3850 int 3851 utf_head_off(char_u *base, char_u *p) 3852 { 3853 char_u *q; 3854 char_u *s; 3855 int c; 3856 int len; 3857 #ifdef FEAT_ARABIC 3858 char_u *j; 3859 #endif 3860 3861 if (*p < 0x80) // be quick for ASCII 3862 return 0; 3863 3864 // Skip backwards over trailing bytes: 10xx.xxxx 3865 // Skip backwards again if on a composing char. 3866 for (q = p; ; --q) 3867 { 3868 // Move s to the last byte of this char. 3869 for (s = q; (s[1] & 0xc0) == 0x80; ++s) 3870 ; 3871 // Move q to the first byte of this char. 3872 while (q > base && (*q & 0xc0) == 0x80) 3873 --q; 3874 // Check for illegal sequence. Do allow an illegal byte after where we 3875 // started. 3876 len = utf8len_tab[*q]; 3877 if (len != (int)(s - q + 1) && len != (int)(p - q + 1)) 3878 return 0; 3879 3880 if (q <= base) 3881 break; 3882 3883 c = utf_ptr2char(q); 3884 if (utf_iscomposing(c)) 3885 continue; 3886 3887 #ifdef FEAT_ARABIC 3888 if (arabic_maycombine(c)) 3889 { 3890 // Advance to get a sneak-peak at the next char 3891 j = q; 3892 --j; 3893 // Move j to the first byte of this char. 3894 while (j > base && (*j & 0xc0) == 0x80) 3895 --j; 3896 if (arabic_combine(utf_ptr2char(j), c)) 3897 continue; 3898 } 3899 #endif 3900 break; 3901 } 3902 3903 return (int)(p - q); 3904 } 3905 3906 /* 3907 * Whether space is NOT allowed before/after 'c'. 3908 */ 3909 int 3910 utf_eat_space(int cc) 3911 { 3912 return ((cc >= 0x2000 && cc <= 0x206F) // General punctuations 3913 || (cc >= 0x2e00 && cc <= 0x2e7f) // Supplemental punctuations 3914 || (cc >= 0x3000 && cc <= 0x303f) // CJK symbols and punctuations 3915 || (cc >= 0xff01 && cc <= 0xff0f) // Full width ASCII punctuations 3916 || (cc >= 0xff1a && cc <= 0xff20) // .. 3917 || (cc >= 0xff3b && cc <= 0xff40) // .. 3918 || (cc >= 0xff5b && cc <= 0xff65)); // .. 3919 } 3920 3921 /* 3922 * Whether line break is allowed before "cc". 3923 */ 3924 int 3925 utf_allow_break_before(int cc) 3926 { 3927 static const int BOL_prohibition_punct[] = 3928 { 3929 '!', 3930 '%', 3931 ')', 3932 ',', 3933 ':', 3934 ';', 3935 '>', 3936 '?', 3937 ']', 3938 '}', 3939 0x2019, // ’ right single quotation mark 3940 0x201d, // ” right double quotation mark 3941 0x2020, // † dagger 3942 0x2021, // ‡ double dagger 3943 0x2026, // … horizontal ellipsis 3944 0x2030, // ‰ per mille sign 3945 0x2031, // ‱ per then thousand sign 3946 0x203c, // ‼ double exclamation mark 3947 0x2047, // ⁇ double question mark 3948 0x2048, // ⁈ question exclamation mark 3949 0x2049, // ⁉ exclamation question mark 3950 0x2103, // ℃ degree celsius 3951 0x2109, // ℉ degree fahrenheit 3952 0x3001, // 、 ideographic comma 3953 0x3002, // 。 ideographic full stop 3954 0x3009, // 〉 right angle bracket 3955 0x300b, // 》 right double angle bracket 3956 0x300d, // 」 right corner bracket 3957 0x300f, // 』 right white corner bracket 3958 0x3011, // 】 right black lenticular bracket 3959 0x3015, // 〕 right tortoise shell bracket 3960 0x3017, // 〗 right white lenticular bracket 3961 0x3019, // 〙 right white tortoise shell bracket 3962 0x301b, // 〛 right white square bracket 3963 0xff01, // ！ fullwidth exclamation mark 3964 0xff09, // ） fullwidth right parenthesis 3965 0xff0c, // ， fullwidth comma 3966 0xff0e, // ． fullwidth full stop 3967 0xff1a, // ： fullwidth colon 3968 0xff1b, // ； fullwidth semicolon 3969 0xff1f, // ？ fullwidth question mark 3970 0xff3d, // ］ fullwidth right square bracket 3971 0xff5d, // ｝ fullwidth right curly bracket 3972 }; 3973 3974 int first = 0; 3975 int last = ARRAY_LENGTH(BOL_prohibition_punct) - 1; 3976 int mid = 0; 3977 3978 while (first < last) 3979 { 3980 mid = (first + last)/2; 3981 3982 if (cc == BOL_prohibition_punct[mid]) 3983 return FALSE; 3984 else if (cc > BOL_prohibition_punct[mid]) 3985 first = mid + 1; 3986 else 3987 last = mid - 1; 3988 } 3989 3990 return cc != BOL_prohibition_punct[first]; 3991 } 3992 3993 /* 3994 * Whether line break is allowed after "cc". 3995 */ 3996 static int 3997 utf_allow_break_after(int cc) 3998 { 3999 static const int EOL_prohibition_punct[] = 4000 { 4001 '(', 4002 '<', 4003 '[', 4004 '`', 4005 '{', 4006 //0x2014, // — em dash 4007 0x2018, // ‘ left single quotation mark 4008 0x201c, // “ left double quotation mark 4009 //0x2053, // ～ swung dash 4010 0x3008, // 〈 left angle bracket 4011 0x300a, // 《 left double angle bracket 4012 0x300c, // 「 left corner bracket 4013 0x300e, // 『 left white corner bracket 4014 0x3010, // 【 left black lenticular bracket 4015 0x3014, // 〔 left tortoise shell bracket 4016 0x3016, // 〖 left white lenticular bracket 4017 0x3018, // 〘 left white tortoise shell bracket 4018 0x301a, // 〚 left white square bracket 4019 0xff08, // （ fullwidth left parenthesis 4020 0xff3b, // ［ fullwidth left square bracket 4021 0xff5b, // ｛ fullwidth left curly bracket 4022 }; 4023 4024 int first = 0; 4025 int last = ARRAY_LENGTH(EOL_prohibition_punct) - 1; 4026 int mid = 0; 4027 4028 while (first < last) 4029 { 4030 mid = (first + last)/2; 4031 4032 if (cc == EOL_prohibition_punct[mid]) 4033 return FALSE; 4034 else if (cc > EOL_prohibition_punct[mid]) 4035 first = mid + 1; 4036 else 4037 last = mid - 1; 4038 } 4039 4040 return cc != EOL_prohibition_punct[first]; 4041 } 4042 4043 /* 4044 * Whether line break is allowed between "cc" and "ncc". 4045 */ 4046 int 4047 utf_allow_break(int cc, int ncc) 4048 { 4049 // don't break between two-letter punctuations 4050 if (cc == ncc 4051 && (cc == 0x2014 // em dash 4052 || cc == 0x2026)) // horizontal ellipsis 4053 return FALSE; 4054 4055 return utf_allow_break_after(cc) && utf_allow_break_before(ncc); 4056 } 4057 4058 /* 4059 * Copy a character from "*fp" to "*tp" and advance the pointers. 4060 */ 4061 void 4062 mb_copy_char(char_u **fp, char_u **tp) 4063 { 4064 int l = (*mb_ptr2len)(*fp); 4065 4066 mch_memmove(*tp, *fp, (size_t)l); 4067 *tp += l; 4068 *fp += l; 4069 } 4070 4071 /* 4072 * Return the offset from "p" to the first byte of a character. When "p" is 4073 * at the start of a character 0 is returned, otherwise the offset to the next 4074 * character. Can start anywhere in a stream of bytes. 4075 */ 4076 int 4077 mb_off_next(char_u *base, char_u *p) 4078 { 4079 int i; 4080 int j; 4081 4082 if (enc_utf8) 4083 { 4084 if (*p < 0x80) // be quick for ASCII 4085 return 0; 4086 4087 // Find the next character that isn't 10xx.xxxx 4088 for (i = 0; (p[i] & 0xc0) == 0x80; ++i) 4089 ; 4090 if (i > 0) 4091 { 4092 // Check for illegal sequence. 4093 for (j = 0; p - j > base; ++j) 4094 if ((p[-j] & 0xc0) != 0x80) 4095 break; 4096 if (utf8len_tab[p[-j]] != i + j) 4097 return 0; 4098 } 4099 return i; 4100 } 4101 4102 // Only need to check if we're on a trail byte, it doesn't matter if we 4103 // want the offset to the next or current character. 4104 return (*mb_head_off)(base, p); 4105 } 4106 4107 /* 4108 * Return the offset from "p" to the last byte of the character it points 4109 * into. Can start anywhere in a stream of bytes. 4110 */ 4111 int 4112 mb_tail_off(char_u *base, char_u *p) 4113 { 4114 int i; 4115 int j; 4116 4117 if (*p == NUL) 4118 return 0; 4119 4120 if (enc_utf8) 4121 { 4122 // Find the last character that is 10xx.xxxx 4123 for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i) 4124 ; 4125 // Check for illegal sequence. 4126 for (j = 0; p - j > base; ++j) 4127 if ((p[-j] & 0xc0) != 0x80) 4128 break; 4129 if (utf8len_tab[p[-j]] != i + j + 1) 4130 return 0; 4131 return i; 4132 } 4133 4134 // It can't be the first byte if a double-byte when not using DBCS, at the 4135 // end of the string or the byte can't start a double-byte. 4136 if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1) 4137 return 0; 4138 4139 // Return 1 when on the lead byte, 0 when on the tail byte. 4140 return 1 - dbcs_head_off(base, p); 4141 } 4142 4143 /* 4144 * Find the next illegal byte sequence. 4145 */ 4146 void 4147 utf_find_illegal(void) 4148 { 4149 pos_T pos = curwin->w_cursor; 4150 char_u *p; 4151 int len; 4152 vimconv_T vimconv; 4153 char_u *tofree = NULL; 4154 4155 vimconv.vc_type = CONV_NONE; 4156 if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT)) 4157 { 4158 // 'encoding' is "utf-8" but we are editing a 8-bit encoded file, 4159 // possibly a utf-8 file with illegal bytes. Setup for conversion 4160 // from utf-8 to 'fileencoding'. 4161 convert_setup(&vimconv, p_enc, curbuf->b_p_fenc); 4162 } 4163 4164 curwin->w_cursor.coladd = 0; 4165 for (;;) 4166 { 4167 p = ml_get_cursor(); 4168 if (vimconv.vc_type != CONV_NONE) 4169 { 4170 vim_free(tofree); 4171 tofree = string_convert(&vimconv, p, NULL); 4172 if (tofree == NULL) 4173 break; 4174 p = tofree; 4175 } 4176 4177 while (*p != NUL) 4178 { 4179 // Illegal means that there are not enough trail bytes (checked by 4180 // utf_ptr2len()) or too many of them (overlong sequence). 4181 len = utf_ptr2len(p); 4182 if (*p >= 0x80 && (len == 1 4183 || utf_char2len(utf_ptr2char(p)) != len)) 4184 { 4185 if (vimconv.vc_type == CONV_NONE) 4186 curwin->w_cursor.col += (colnr_T)(p - ml_get_cursor()); 4187 else 4188 { 4189 int l; 4190 4191 len = (int)(p - tofree); 4192 for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l) 4193 { 4194 l = utf_ptr2len(p); 4195 curwin->w_cursor.col += l; 4196 } 4197 } 4198 goto theend; 4199 } 4200 p += len; 4201 } 4202 if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count) 4203 break; 4204 ++curwin->w_cursor.lnum; 4205 curwin->w_cursor.col = 0; 4206 } 4207 4208 // didn't find it: don't move and beep 4209 curwin->w_cursor = pos; 4210 beep_flush(); 4211 4212 theend: 4213 vim_free(tofree); 4214 convert_setup(&vimconv, NULL, NULL); 4215 } 4216 4217 #if defined(FEAT_GUI_GTK) || defined(PROTO) 4218 /* 4219 * Return TRUE if string "s" is a valid utf-8 string. 4220 * When "end" is NULL stop at the first NUL. 4221 * When "end" is positive stop there. 4222 */ 4223 int 4224 utf_valid_string(char_u *s, char_u *end) 4225 { 4226 int l; 4227 char_u *p = s; 4228 4229 while (end == NULL ? *p != NUL : p < end) 4230 { 4231 l = utf8len_tab_zero[*p]; 4232 if (l == 0) 4233 return FALSE; // invalid lead byte 4234 if (end != NULL && p + l > end) 4235 return FALSE; // incomplete byte sequence 4236 ++p; 4237 while (--l > 0) 4238 if ((*p++ & 0xc0) != 0x80) 4239 return FALSE; // invalid trail byte 4240 } 4241 return TRUE; 4242 } 4243 #endif 4244 4245 #if defined(FEAT_GUI) || defined(PROTO) 4246 /* 4247 * Special version of mb_tail_off() for use in ScreenLines[]. 4248 */ 4249 int 4250 dbcs_screen_tail_off(char_u *base, char_u *p) 4251 { 4252 // It can't be the first byte if a double-byte when not using DBCS, at the 4253 // end of the string or the byte can't start a double-byte. 4254 // For euc-jp an 0x8e byte always means we have a lead byte in the current 4255 // cell. 4256 if (*p == NUL || p[1] == NUL 4257 || (enc_dbcs == DBCS_JPNU && *p == 0x8e) 4258 || MB_BYTE2LEN(*p) == 1) 4259 return 0; 4260 4261 // Return 1 when on the lead byte, 0 when on the tail byte. 4262 return 1 - dbcs_screen_head_off(base, p); 4263 } 4264 #endif 4265 4266 /* 4267 * If the cursor moves on an trail byte, set the cursor on the lead byte. 4268 * Thus it moves left if necessary. 4269 * Return TRUE when the cursor was adjusted. 4270 */ 4271 void 4272 mb_adjust_cursor(void) 4273 { 4274 mb_adjustpos(curbuf, &curwin->w_cursor); 4275 } 4276 4277 /* 4278 * Adjust position "*lp" to point to the first byte of a multi-byte character. 4279 * If it points to a tail byte it's moved backwards to the head byte. 4280 */ 4281 void 4282 mb_adjustpos(buf_T *buf, pos_T *lp) 4283 { 4284 char_u *p; 4285 4286 if (lp->col > 0 || lp->coladd > 1) 4287 { 4288 p = ml_get_buf(buf, lp->lnum, FALSE); 4289 if (*p == NUL || (int)STRLEN(p) < lp->col) 4290 lp->col = 0; 4291 else 4292 lp->col -= (*mb_head_off)(p, p + lp->col); 4293 // Reset "coladd" when the cursor would be on the right half of a 4294 // double-wide character. 4295 if (lp->coladd == 1 4296 && p[lp->col] != TAB 4297 && vim_isprintc((*mb_ptr2char)(p + lp->col)) 4298 && ptr2cells(p + lp->col) > 1) 4299 lp->coladd = 0; 4300 } 4301 } 4302 4303 /* 4304 * Return a pointer to the character before "*p", if there is one. 4305 */ 4306 char_u * 4307 mb_prevptr( 4308 char_u *line, // start of the string 4309 char_u *p) 4310 { 4311 if (p > line) 4312 MB_PTR_BACK(line, p); 4313 return p; 4314 } 4315 4316 /* 4317 * Return the character length of "str". Each multi-byte character (with 4318 * following composing characters) counts as one. 4319 */ 4320 int 4321 mb_charlen(char_u *str) 4322 { 4323 char_u *p = str; 4324 int count; 4325 4326 if (p == NULL) 4327 return 0; 4328 4329 for (count = 0; *p != NUL; count++) 4330 p += (*mb_ptr2len)(p); 4331 4332 return count; 4333 } 4334 4335 /* 4336 * Like mb_charlen() but for a string with specified length. 4337 */ 4338 int 4339 mb_charlen_len(char_u *str, int len) 4340 { 4341 char_u *p = str; 4342 int count; 4343 4344 for (count = 0; *p != NUL && p < str + len; count++) 4345 p += (*mb_ptr2len)(p); 4346 4347 return count; 4348 } 4349 4350 /* 4351 * Try to un-escape a multi-byte character. 4352 * Used for the "to" and "from" part of a mapping. 4353 * Return the un-escaped string if it is a multi-byte character, and advance 4354 * "pp" to just after the bytes that formed it. 4355 * Return NULL if no multi-byte char was found. 4356 */ 4357 char_u * 4358 mb_unescape(char_u **pp) 4359 { 4360 static char_u buf[6]; 4361 int n; 4362 int m = 0; 4363 char_u *str = *pp; 4364 4365 // Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI 4366 // KS_EXTRA KE_CSI to CSI. 4367 // Maximum length of a utf-8 character is 4 bytes. 4368 for (n = 0; str[n] != NUL && m < 4; ++n) 4369 { 4370 if (str[n] == K_SPECIAL 4371 && str[n + 1] == KS_SPECIAL 4372 && str[n + 2] == KE_FILLER) 4373 { 4374 buf[m++] = K_SPECIAL; 4375 n += 2; 4376 } 4377 else if ((str[n] == K_SPECIAL 4378 # ifdef FEAT_GUI 4379 || str[n] == CSI 4380 # endif 4381 ) 4382 && str[n + 1] == KS_EXTRA 4383 && str[n + 2] == (int)KE_CSI) 4384 { 4385 buf[m++] = CSI; 4386 n += 2; 4387 } 4388 else if (str[n] == K_SPECIAL 4389 # ifdef FEAT_GUI 4390 || str[n] == CSI 4391 # endif 4392 ) 4393 break; // a special key can't be a multibyte char 4394 else 4395 buf[m++] = str[n]; 4396 buf[m] = NUL; 4397 4398 // Return a multi-byte character if it's found. An illegal sequence 4399 // will result in a 1 here. 4400 if ((*mb_ptr2len)(buf) > 1) 4401 { 4402 *pp = str + n + 1; 4403 return buf; 4404 } 4405 4406 // Bail out quickly for ASCII. 4407 if (buf[0] < 128) 4408 break; 4409 } 4410 return NULL; 4411 } 4412 4413 /* 4414 * Return TRUE if the character at "row"/"col" on the screen is the left side 4415 * of a double-width character. 4416 * Caller must make sure "row" and "col" are not invalid! 4417 */ 4418 int 4419 mb_lefthalve(int row, int col) 4420 { 4421 return (*mb_off2cells)(LineOffset[row] + col, 4422 LineOffset[row] + screen_Columns) > 1; 4423 } 4424 4425 /* 4426 * Correct a position on the screen, if it's the right half of a double-wide 4427 * char move it to the left half. Returns the corrected column. 4428 */ 4429 int 4430 mb_fix_col(int col, int row) 4431 { 4432 int off; 4433 4434 col = check_col(col); 4435 row = check_row(row); 4436 off = LineOffset[row] + col; 4437 if (has_mbyte && ScreenLines != NULL && col > 0 4438 && ((enc_dbcs 4439 && ScreenLines[off] != NUL 4440 && dbcs_screen_head_off(ScreenLines + LineOffset[row], 4441 ScreenLines + off)) 4442 || (enc_utf8 && ScreenLines[off] == 0 4443 && ScreenLinesUC[off] == 0))) 4444 return col - 1; 4445 return col; 4446 } 4447 4448 static int enc_alias_search(char_u *name); 4449 4450 /* 4451 * Skip the Vim specific head of a 'encoding' name. 4452 */ 4453 char_u * 4454 enc_skip(char_u *p) 4455 { 4456 if (STRNCMP(p, "2byte-", 6) == 0) 4457 return p + 6; 4458 if (STRNCMP(p, "8bit-", 5) == 0) 4459 return p + 5; 4460 return p; 4461 } 4462 4463 /* 4464 * Find the canonical name for encoding "enc". 4465 * When the name isn't recognized, returns "enc" itself, but with all lower 4466 * case characters and '_' replaced with '-'. 4467 * Returns an allocated string. NULL for out-of-memory. 4468 */ 4469 char_u * 4470 enc_canonize(char_u *enc) 4471 { 4472 char_u *r; 4473 char_u *p, *s; 4474 int i; 4475 4476 if (STRCMP(enc, "default") == 0) 4477 { 4478 #ifdef MSWIN 4479 // Use the system encoding, the default is always utf-8. 4480 r = enc_locale(); 4481 #else 4482 // Use the default encoding as it's found by set_init_1(). 4483 r = get_encoding_default(); 4484 #endif 4485 if (r == NULL) 4486 r = (char_u *)ENC_DFLT; 4487 return vim_strsave(r); 4488 } 4489 4490 // copy "enc" to allocated memory, with room for two '-' 4491 r = alloc(STRLEN(enc) + 3); 4492 if (r != NULL) 4493 { 4494 // Make it all lower case and replace '_' with '-'. 4495 p = r; 4496 for (s = enc; *s != NUL; ++s) 4497 { 4498 if (*s == '_') 4499 *p++ = '-'; 4500 else 4501 *p++ = TOLOWER_ASC(*s); 4502 } 4503 *p = NUL; 4504 4505 // Skip "2byte-" and "8bit-". 4506 p = enc_skip(r); 4507 4508 // Change "microsoft-cp" to "cp". Used in some spell files. 4509 if (STRNCMP(p, "microsoft-cp", 12) == 0) 4510 STRMOVE(p, p + 10); 4511 4512 // "iso8859" -> "iso-8859" 4513 if (STRNCMP(p, "iso8859", 7) == 0) 4514 { 4515 STRMOVE(p + 4, p + 3); 4516 p[3] = '-'; 4517 } 4518 4519 // "iso-8859n" -> "iso-8859-n" 4520 if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-') 4521 { 4522 STRMOVE(p + 9, p + 8); 4523 p[8] = '-'; 4524 } 4525 4526 // "latin-N" -> "latinN" 4527 if (STRNCMP(p, "latin-", 6) == 0) 4528 STRMOVE(p + 5, p + 6); 4529 4530 if (enc_canon_search(p) >= 0) 4531 { 4532 // canonical name can be used unmodified 4533 if (p != r) 4534 STRMOVE(r, p); 4535 } 4536 else if ((i = enc_alias_search(p)) >= 0) 4537 { 4538 // alias recognized, get canonical name 4539 vim_free(r); 4540 r = vim_strsave((char_u *)enc_canon_table[i].name); 4541 } 4542 } 4543 return r; 4544 } 4545 4546 /* 4547 * Search for an encoding alias of "name". 4548 * Returns -1 when not found. 4549 */ 4550 static int 4551 enc_alias_search(char_u *name) 4552 { 4553 int i; 4554 4555 for (i = 0; enc_alias_table[i].name != NULL; ++i) 4556 if (STRCMP(name, enc_alias_table[i].name) == 0) 4557 return enc_alias_table[i].canon; 4558 return -1; 4559 } 4560 4561 4562 #ifdef HAVE_LANGINFO_H 4563 # include <langinfo.h> 4564 #endif 4565 4566 #if !defined(FEAT_GUI_MSWIN) || defined(VIMDLL) 4567 /* 4568 * Get the canonicalized encoding from the specified locale string "locale" 4569 * or from the environment variables LC_ALL, LC_CTYPE and LANG. 4570 * Returns an allocated string when successful, NULL when not. 4571 */ 4572 char_u * 4573 enc_locale_env(char *locale) 4574 { 4575 char *s = locale; 4576 char *p; 4577 int i; 4578 char buf[50]; 4579 4580 if (s == NULL || *s == NUL) 4581 if ((s = getenv("LC_ALL")) == NULL || *s == NUL) 4582 if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL) 4583 s = getenv("LANG"); 4584 4585 if (s == NULL || *s == NUL) 4586 return NULL; 4587 4588 // The most generic locale format is: 4589 // language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]] 4590 // If there is a '.' remove the part before it. 4591 // if there is something after the codeset, remove it. 4592 // Make the name lowercase and replace '_' with '-'. 4593 // Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn", 4594 // "ko_KR.EUC" == "euc-kr" 4595 if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL) 4596 { 4597 if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0 4598 && !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_') 4599 { 4600 // copy "XY.EUC" to "euc-XY" to buf[10] 4601 STRCPY(buf + 10, "euc-"); 4602 buf[14] = p[-2]; 4603 buf[15] = p[-1]; 4604 buf[16] = 0; 4605 s = buf + 10; 4606 } 4607 else 4608 s = p + 1; 4609 } 4610 for (i = 0; i < (int)sizeof(buf) - 1 && s[i] != NUL; ++i) 4611 { 4612 if (s[i] == '_' || s[i] == '-') 4613 buf[i] = '-'; 4614 else if (isalnum((int)s[i])) 4615 buf[i] = TOLOWER_ASC(s[i]); 4616 else 4617 break; 4618 } 4619 buf[i] = NUL; 4620 4621 return enc_canonize((char_u *)buf); 4622 } 4623 #endif 4624 4625 /* 4626 * Get the canonicalized encoding of the current locale. 4627 * Returns an allocated string when successful, NULL when not. 4628 */ 4629 char_u * 4630 enc_locale(void) 4631 { 4632 #ifdef MSWIN 4633 char buf[50]; 4634 long acp = GetACP(); 4635 4636 if (acp == 1200) 4637 STRCPY(buf, "ucs-2le"); 4638 else if (acp == 1252) // cp1252 is used as latin1 4639 STRCPY(buf, "latin1"); 4640 else if (acp == 65001) 4641 STRCPY(buf, "utf-8"); 4642 else 4643 sprintf(buf, "cp%ld", acp); 4644 4645 return enc_canonize((char_u *)buf); 4646 #else 4647 char *s; 4648 4649 # ifdef HAVE_NL_LANGINFO_CODESET 4650 if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL) 4651 # endif 4652 # if defined(HAVE_LOCALE_H) || defined(X_LOCALE) 4653 if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL) 4654 # endif 4655 s = NULL; 4656 4657 return enc_locale_env(s); 4658 #endif 4659 } 4660 4661 # if defined(MSWIN) || defined(PROTO) || defined(FEAT_CYGWIN_WIN32_CLIPBOARD) 4662 /* 4663 * Convert an encoding name to an MS-Windows codepage. 4664 * Returns zero if no codepage can be figured out. 4665 */ 4666 int 4667 encname2codepage(char_u *name) 4668 { 4669 int cp; 4670 char_u *p = name; 4671 int idx; 4672 4673 if (STRNCMP(p, "8bit-", 5) == 0) 4674 p += 5; 4675 else if (STRNCMP(p_enc, "2byte-", 6) == 0) 4676 p += 6; 4677 4678 if (p[0] == 'c' && p[1] == 'p') 4679 cp = atoi((char *)p + 2); 4680 else if ((idx = enc_canon_search(p)) >= 0) 4681 cp = enc_canon_table[idx].codepage; 4682 else 4683 return 0; 4684 if (IsValidCodePage(cp)) 4685 return cp; 4686 return 0; 4687 } 4688 # endif 4689 4690 # if defined(USE_ICONV) || defined(PROTO) 4691 4692 /* 4693 * Call iconv_open() with a check if iconv() works properly (there are broken 4694 * versions). 4695 * Returns (void *)-1 if failed. 4696 * (should return iconv_t, but that causes problems with prototypes). 4697 */ 4698 void * 4699 my_iconv_open(char_u *to, char_u *from) 4700 { 4701 iconv_t fd; 4702 #define ICONV_TESTLEN 400 4703 char_u tobuf[ICONV_TESTLEN]; 4704 char *p; 4705 size_t tolen; 4706 static int iconv_ok = -1; 4707 4708 if (iconv_ok == FALSE) 4709 return (void *)-1; // detected a broken iconv() previously 4710 4711 #ifdef DYNAMIC_ICONV 4712 // Check if the iconv.dll can be found. 4713 if (!iconv_enabled(TRUE)) 4714 return (void *)-1; 4715 #endif 4716 4717 fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from)); 4718 4719 if (fd != (iconv_t)-1 && iconv_ok == -1) 4720 { 4721 /* 4722 * Do a dummy iconv() call to check if it actually works. There is a 4723 * version of iconv() on Linux that is broken. We can't ignore it, 4724 * because it's wide-spread. The symptoms are that after outputting 4725 * the initial shift state the "to" pointer is NULL and conversion 4726 * stops for no apparent reason after about 8160 characters. 4727 */ 4728 p = (char *)tobuf; 4729 tolen = ICONV_TESTLEN; 4730 (void)iconv(fd, NULL, NULL, &p, &tolen); 4731 if (p == NULL) 4732 { 4733 iconv_ok = FALSE; 4734 iconv_close(fd); 4735 fd = (iconv_t)-1; 4736 } 4737 else 4738 iconv_ok = TRUE; 4739 } 4740 4741 return (void *)fd; 4742 } 4743 4744 /* 4745 * Convert the string "str[slen]" with iconv(). 4746 * If "unconvlenp" is not NULL handle the string ending in an incomplete 4747 * sequence and set "*unconvlenp" to the length of it. 4748 * Returns the converted string in allocated memory. NULL for an error. 4749 * If resultlenp is not NULL, sets it to the result length in bytes. 4750 */ 4751 static char_u * 4752 iconv_string( 4753 vimconv_T *vcp, 4754 char_u *str, 4755 int slen, 4756 int *unconvlenp, 4757 int *resultlenp) 4758 { 4759 const char *from; 4760 size_t fromlen; 4761 char *to; 4762 size_t tolen; 4763 size_t len = 0; 4764 size_t done = 0; 4765 char_u *result = NULL; 4766 char_u *p; 4767 int l; 4768 4769 from = (char *)str; 4770 fromlen = slen; 4771 for (;;) 4772 { 4773 if (len == 0 || ICONV_ERRNO == ICONV_E2BIG) 4774 { 4775 // Allocate enough room for most conversions. When re-allocating 4776 // increase the buffer size. 4777 len = len + fromlen * 2 + 40; 4778 p = alloc(len); 4779 if (p != NULL && done > 0) 4780 mch_memmove(p, result, done); 4781 vim_free(result); 4782 result = p; 4783 if (result == NULL) // out of memory 4784 break; 4785 } 4786 4787 to = (char *)result + done; 4788 tolen = len - done - 2; 4789 // Avoid a warning for systems with a wrong iconv() prototype by 4790 // casting the second argument to void *. 4791 if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen) 4792 != (size_t)-1) 4793 { 4794 // Finished, append a NUL. 4795 *to = NUL; 4796 break; 4797 } 4798 4799 // Check both ICONV_EINVAL and EINVAL, because the dynamically loaded 4800 // iconv library may use one of them. 4801 if (!vcp->vc_fail && unconvlenp != NULL 4802 && (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) 4803 { 4804 // Handle an incomplete sequence at the end. 4805 *to = NUL; 4806 *unconvlenp = (int)fromlen; 4807 break; 4808 } 4809 4810 // Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded 4811 // iconv library may use one of them. 4812 else if (!vcp->vc_fail 4813 && (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ 4814 || ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) 4815 { 4816 // Can't convert: insert a '?' and skip a character. This assumes 4817 // conversion from 'encoding' to something else. In other 4818 // situations we don't know what to skip anyway. 4819 *to++ = '?'; 4820 if ((*mb_ptr2cells)((char_u *)from) > 1) 4821 *to++ = '?'; 4822 if (enc_utf8) 4823 l = utfc_ptr2len_len((char_u *)from, (int)fromlen); 4824 else 4825 { 4826 l = (*mb_ptr2len)((char_u *)from); 4827 if (l > (int)fromlen) 4828 l = (int)fromlen; 4829 } 4830 from += l; 4831 fromlen -= l; 4832 } 4833 else if (ICONV_ERRNO != ICONV_E2BIG) 4834 { 4835 // conversion failed 4836 VIM_CLEAR(result); 4837 break; 4838 } 4839 // Not enough room or skipping illegal sequence. 4840 done = to - (char *)result; 4841 } 4842 4843 if (resultlenp != NULL && result != NULL) 4844 *resultlenp = (int)(to - (char *)result); 4845 return result; 4846 } 4847 4848 # if defined(DYNAMIC_ICONV) || defined(PROTO) 4849 /* 4850 * Dynamically load the "iconv.dll" on Win32. 4851 */ 4852 4853 # ifndef DYNAMIC_ICONV // must be generating prototypes 4854 # define HINSTANCE int 4855 # endif 4856 static HINSTANCE hIconvDLL = 0; 4857 static HINSTANCE hMsvcrtDLL = 0; 4858 4859 # ifndef DYNAMIC_ICONV_DLL 4860 # define DYNAMIC_ICONV_DLL "iconv.dll" 4861 # define DYNAMIC_ICONV_DLL_ALT1 "libiconv.dll" 4862 # define DYNAMIC_ICONV_DLL_ALT2 "libiconv2.dll" 4863 # define DYNAMIC_ICONV_DLL_ALT3 "libiconv-2.dll" 4864 # endif 4865 # ifndef DYNAMIC_MSVCRT_DLL 4866 # define DYNAMIC_MSVCRT_DLL "msvcrt.dll" 4867 # endif 4868 4869 /* 4870 * Try opening the iconv.dll and return TRUE if iconv() can be used. 4871 */ 4872 int 4873 iconv_enabled(int verbose) 4874 { 4875 if (hIconvDLL != 0 && hMsvcrtDLL != 0) 4876 return TRUE; 4877 4878 // The iconv DLL file goes under different names, try them all. 4879 // Do the "2" version first, it's newer. 4880 #ifdef DYNAMIC_ICONV_DLL_ALT2 4881 if (hIconvDLL == 0) 4882 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT2); 4883 #endif 4884 #ifdef DYNAMIC_ICONV_DLL_ALT3 4885 if (hIconvDLL == 0) 4886 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT3); 4887 #endif 4888 if (hIconvDLL == 0) 4889 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL); 4890 #ifdef DYNAMIC_ICONV_DLL_ALT1 4891 if (hIconvDLL == 0) 4892 hIconvDLL = vimLoadLib(DYNAMIC_ICONV_DLL_ALT1); 4893 #endif 4894 4895 if (hIconvDLL != 0) 4896 hMsvcrtDLL = vimLoadLib(DYNAMIC_MSVCRT_DLL); 4897 if (hIconvDLL == 0 || hMsvcrtDLL == 0) 4898 { 4899 // Only give the message when 'verbose' is set, otherwise it might be 4900 // done whenever a conversion is attempted. 4901 if (verbose && p_verbose > 0) 4902 { 4903 verbose_enter(); 4904 semsg(_(e_loadlib), 4905 hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL, 4906 GetWin32Error()); 4907 verbose_leave(); 4908 } 4909 iconv_end(); 4910 return FALSE; 4911 } 4912 4913 iconv = (void *)GetProcAddress(hIconvDLL, "libiconv"); 4914 iconv_open = (void *)GetProcAddress(hIconvDLL, "libiconv_open"); 4915 iconv_close = (void *)GetProcAddress(hIconvDLL, "libiconv_close"); 4916 iconvctl = (void *)GetProcAddress(hIconvDLL, "libiconvctl"); 4917 iconv_errno = get_dll_import_func(hIconvDLL, "_errno"); 4918 if (iconv_errno == NULL) 4919 iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno"); 4920 if (iconv == NULL || iconv_open == NULL || iconv_close == NULL 4921 || iconvctl == NULL || iconv_errno == NULL) 4922 { 4923 iconv_end(); 4924 if (verbose && p_verbose > 0) 4925 { 4926 verbose_enter(); 4927 semsg(_(e_loadfunc), "for libiconv"); 4928 verbose_leave(); 4929 } 4930 return FALSE; 4931 } 4932 return TRUE; 4933 } 4934 4935 void 4936 iconv_end(void) 4937 { 4938 // Don't use iconv() when inputting or outputting characters. 4939 if (input_conv.vc_type == CONV_ICONV) 4940 convert_setup(&input_conv, NULL, NULL); 4941 if (output_conv.vc_type == CONV_ICONV) 4942 convert_setup(&output_conv, NULL, NULL); 4943 4944 if (hIconvDLL != 0) 4945 FreeLibrary(hIconvDLL); 4946 if (hMsvcrtDLL != 0) 4947 FreeLibrary(hMsvcrtDLL); 4948 hIconvDLL = 0; 4949 hMsvcrtDLL = 0; 4950 } 4951 # endif // DYNAMIC_ICONV 4952 # endif // USE_ICONV 4953 4954 #if defined(FEAT_EVAL) || defined(PROTO) 4955 /* 4956 * "getimstatus()" function 4957 */ 4958 void 4959 f_getimstatus(typval_T *argvars UNUSED, typval_T *rettv) 4960 { 4961 # if defined(HAVE_INPUT_METHOD) 4962 rettv->vval.v_number = im_get_status(); 4963 # endif 4964 } 4965 4966 /* 4967 * iconv() function 4968 */ 4969 void 4970 f_iconv(typval_T *argvars UNUSED, typval_T *rettv) 4971 { 4972 char_u buf1[NUMBUFLEN]; 4973 char_u buf2[NUMBUFLEN]; 4974 char_u *from, *to, *str; 4975 vimconv_T vimconv; 4976 4977 rettv->v_type = VAR_STRING; 4978 rettv->vval.v_string = NULL; 4979 4980 if (in_vim9script() 4981 && (check_for_string_arg(argvars, 0) == FAIL 4982 || check_for_string_arg(argvars, 1) == FAIL 4983 || check_for_string_arg(argvars, 2) == FAIL)) 4984 return; 4985 4986 str = tv_get_string(&argvars[0]); 4987 from = enc_canonize(enc_skip(tv_get_string_buf(&argvars[1], buf1))); 4988 to = enc_canonize(enc_skip(tv_get_string_buf(&argvars[2], buf2))); 4989 vimconv.vc_type = CONV_NONE; 4990 convert_setup(&vimconv, from, to); 4991 4992 // If the encodings are equal, no conversion needed. 4993 if (vimconv.vc_type == CONV_NONE) 4994 rettv->vval.v_string = vim_strsave(str); 4995 else 4996 rettv->vval.v_string = string_convert(&vimconv, str, NULL); 4997 4998 convert_setup(&vimconv, NULL, NULL); 4999 vim_free(from); 5000 vim_free(to); 5001 } 5002 #endif 5003 5004 /* 5005 * Setup "vcp" for conversion from "from" to "to". 5006 * The names must have been made canonical with enc_canonize(). 5007 * vcp->vc_type must have been initialized to CONV_NONE. 5008 * Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8 5009 * instead). 5010 * Afterwards invoke with "from" and "to" equal to NULL to cleanup. 5011 * Return FAIL when conversion is not supported, OK otherwise. 5012 */ 5013 int 5014 convert_setup(vimconv_T *vcp, char_u *from, char_u *to) 5015 { 5016 return convert_setup_ext(vcp, from, TRUE, to, TRUE); 5017 } 5018 5019 /* 5020 * As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all 5021 * "from" unicode charsets be considered utf-8. Same for "to". 5022 */ 5023 int 5024 convert_setup_ext( 5025 vimconv_T *vcp, 5026 char_u *from, 5027 int from_unicode_is_utf8, 5028 char_u *to, 5029 int to_unicode_is_utf8) 5030 { 5031 int from_prop; 5032 int to_prop; 5033 int from_is_utf8; 5034 int to_is_utf8; 5035 5036 // Reset to no conversion. 5037 #ifdef USE_ICONV 5038 if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1) 5039 iconv_close(vcp->vc_fd); 5040 #endif 5041 vcp->vc_type = CONV_NONE; 5042 vcp->vc_factor = 1; 5043 vcp->vc_fail = FALSE; 5044 5045 // No conversion when one of the names is empty or they are equal. 5046 if (from == NULL || *from == NUL || to == NULL || *to == NUL 5047 || STRCMP(from, to) == 0) 5048 return OK; 5049 5050 from_prop = enc_canon_props(from); 5051 to_prop = enc_canon_props(to); 5052 if (from_unicode_is_utf8) 5053 from_is_utf8 = from_prop & ENC_UNICODE; 5054 else 5055 from_is_utf8 = from_prop == ENC_UNICODE; 5056 if (to_unicode_is_utf8) 5057 to_is_utf8 = to_prop & ENC_UNICODE; 5058 else 5059 to_is_utf8 = to_prop == ENC_UNICODE; 5060 5061 if ((from_prop & ENC_LATIN1) && to_is_utf8) 5062 { 5063 // Internal latin1 -> utf-8 conversion. 5064 vcp->vc_type = CONV_TO_UTF8; 5065 vcp->vc_factor = 2; // up to twice as long 5066 } 5067 else if ((from_prop & ENC_LATIN9) && to_is_utf8) 5068 { 5069 // Internal latin9 -> utf-8 conversion. 5070 vcp->vc_type = CONV_9_TO_UTF8; 5071 vcp->vc_factor = 3; // up to three as long (euro sign) 5072 } 5073 else if (from_is_utf8 && (to_prop & ENC_LATIN1)) 5074 { 5075 // Internal utf-8 -> latin1 conversion. 5076 vcp->vc_type = CONV_TO_LATIN1; 5077 } 5078 else if (from_is_utf8 && (to_prop & ENC_LATIN9)) 5079 { 5080 // Internal utf-8 -> latin9 conversion. 5081 vcp->vc_type = CONV_TO_LATIN9; 5082 } 5083 #ifdef MSWIN 5084 // Win32-specific codepage <-> codepage conversion without iconv. 5085 else if ((from_is_utf8 || encname2codepage(from) > 0) 5086 && (to_is_utf8 || encname2codepage(to) > 0)) 5087 { 5088 vcp->vc_type = CONV_CODEPAGE; 5089 vcp->vc_factor = 2; // up to twice as long 5090 vcp->vc_cpfrom = from_is_utf8 ? 0 : encname2codepage(from); 5091 vcp->vc_cpto = to_is_utf8 ? 0 : encname2codepage(to); 5092 } 5093 #endif 5094 #ifdef MACOS_CONVERT 5095 else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1)) 5096 { 5097 vcp->vc_type = CONV_MAC_LATIN1; 5098 } 5099 else if ((from_prop & ENC_MACROMAN) && to_is_utf8) 5100 { 5101 vcp->vc_type = CONV_MAC_UTF8; 5102 vcp->vc_factor = 2; // up to twice as long 5103 } 5104 else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN)) 5105 { 5106 vcp->vc_type = CONV_LATIN1_MAC; 5107 } 5108 else if (from_is_utf8 && (to_prop & ENC_MACROMAN)) 5109 { 5110 vcp->vc_type = CONV_UTF8_MAC; 5111 } 5112 #endif 5113 #ifdef USE_ICONV 5114 else 5115 { 5116 // Use iconv() for conversion. 5117 vcp->vc_fd = (iconv_t)my_iconv_open( 5118 to_is_utf8 ? (char_u *)"utf-8" : to, 5119 from_is_utf8 ? (char_u *)"utf-8" : from); 5120 if (vcp->vc_fd != (iconv_t)-1) 5121 { 5122 vcp->vc_type = CONV_ICONV; 5123 vcp->vc_factor = 4; // could be longer too... 5124 } 5125 } 5126 #endif 5127 if (vcp->vc_type == CONV_NONE) 5128 return FAIL; 5129 5130 return OK; 5131 } 5132 5133 #if defined(FEAT_GUI) || defined(AMIGA) || defined(MSWIN) \ 5134 || defined(PROTO) 5135 /* 5136 * Do conversion on typed input characters in-place. 5137 * The input and output are not NUL terminated! 5138 * Returns the length after conversion. 5139 */ 5140 int 5141 convert_input(char_u *ptr, int len, int maxlen) 5142 { 5143 return convert_input_safe(ptr, len, maxlen, NULL, NULL); 5144 } 5145 #endif 5146 5147 /* 5148 * Like convert_input(), but when there is an incomplete byte sequence at the 5149 * end return that as an allocated string in "restp" and set "*restlenp" to 5150 * the length. If "restp" is NULL it is not used. 5151 */ 5152 int 5153 convert_input_safe( 5154 char_u *ptr, 5155 int len, 5156 int maxlen, 5157 char_u **restp, 5158 int *restlenp) 5159 { 5160 char_u *d; 5161 int dlen = len; 5162 int unconvertlen = 0; 5163 5164 d = string_convert_ext(&input_conv, ptr, &dlen, 5165 restp == NULL ? NULL : &unconvertlen); 5166 if (d != NULL) 5167 { 5168 if (dlen <= maxlen) 5169 { 5170 if (unconvertlen > 0) 5171 { 5172 // Move the unconverted characters to allocated memory. 5173 *restp = alloc(unconvertlen); 5174 if (*restp != NULL) 5175 mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen); 5176 *restlenp = unconvertlen; 5177 } 5178 mch_memmove(ptr, d, dlen); 5179 } 5180 else 5181 // result is too long, keep the unconverted text (the caller must 5182 // have done something wrong!) 5183 dlen = len; 5184 vim_free(d); 5185 } 5186 return dlen; 5187 } 5188 5189 /* 5190 * Convert text "ptr[*lenp]" according to "vcp". 5191 * Returns the result in allocated memory and sets "*lenp". 5192 * When "lenp" is NULL, use NUL terminated strings. 5193 * Illegal chars are often changed to "?", unless vcp->vc_fail is set. 5194 * When something goes wrong, NULL is returned and "*lenp" is unchanged. 5195 */ 5196 char_u * 5197 string_convert( 5198 vimconv_T *vcp, 5199 char_u *ptr, 5200 int *lenp) 5201 { 5202 return string_convert_ext(vcp, ptr, lenp, NULL); 5203 } 5204 5205 /* 5206 * Like string_convert(), but when "unconvlenp" is not NULL and there are is 5207 * an incomplete sequence at the end it is not converted and "*unconvlenp" is 5208 * set to the number of remaining bytes. 5209 */ 5210 char_u * 5211 string_convert_ext( 5212 vimconv_T *vcp, 5213 char_u *ptr, 5214 int *lenp, 5215 int *unconvlenp) 5216 { 5217 char_u *retval = NULL; 5218 char_u *d; 5219 int len; 5220 int i; 5221 int l; 5222 int c; 5223 5224 if (lenp == NULL) 5225 len = (int)STRLEN(ptr); 5226 else 5227 len = *lenp; 5228 if (len == 0) 5229 return vim_strsave((char_u *)""); 5230 5231 switch (vcp->vc_type) 5232 { 5233 case CONV_TO_UTF8: // latin1 to utf-8 conversion 5234 retval = alloc(len * 2 + 1); 5235 if (retval == NULL) 5236 break; 5237 d = retval; 5238 for (i = 0; i < len; ++i) 5239 { 5240 c = ptr[i]; 5241 if (c < 0x80) 5242 *d++ = c; 5243 else 5244 { 5245 *d++ = 0xc0 + ((unsigned)c >> 6); 5246 *d++ = 0x80 + (c & 0x3f); 5247 } 5248 } 5249 *d = NUL; 5250 if (lenp != NULL) 5251 *lenp = (int)(d - retval); 5252 break; 5253 5254 case CONV_9_TO_UTF8: // latin9 to utf-8 conversion 5255 retval = alloc(len * 3 + 1); 5256 if (retval == NULL) 5257 break; 5258 d = retval; 5259 for (i = 0; i < len; ++i) 5260 { 5261 c = ptr[i]; 5262 switch (c) 5263 { 5264 case 0xa4: c = 0x20ac; break; // euro 5265 case 0xa6: c = 0x0160; break; // S hat 5266 case 0xa8: c = 0x0161; break; // S -hat 5267 case 0xb4: c = 0x017d; break; // Z hat 5268 case 0xb8: c = 0x017e; break; // Z -hat 5269 case 0xbc: c = 0x0152; break; // OE 5270 case 0xbd: c = 0x0153; break; // oe 5271 case 0xbe: c = 0x0178; break; // Y 5272 } 5273 d += utf_char2bytes(c, d); 5274 } 5275 *d = NUL; 5276 if (lenp != NULL) 5277 *lenp = (int)(d - retval); 5278 break; 5279 5280 case CONV_TO_LATIN1: // utf-8 to latin1 conversion 5281 case CONV_TO_LATIN9: // utf-8 to latin9 conversion 5282 retval = alloc(len + 1); 5283 if (retval == NULL) 5284 break; 5285 d = retval; 5286 for (i = 0; i < len; ++i) 5287 { 5288 l = utf_ptr2len_len(ptr + i, len - i); 5289 if (l == 0) 5290 *d++ = NUL; 5291 else if (l == 1) 5292 { 5293 int l_w = utf8len_tab_zero[ptr[i]]; 5294 5295 if (l_w == 0) 5296 { 5297 // Illegal utf-8 byte cannot be converted 5298 vim_free(retval); 5299 return NULL; 5300 } 5301 if (unconvlenp != NULL && l_w > len - i) 5302 { 5303 // Incomplete sequence at the end. 5304 *unconvlenp = len - i; 5305 break; 5306 } 5307 *d++ = ptr[i]; 5308 } 5309 else 5310 { 5311 c = utf_ptr2char(ptr + i); 5312 if (vcp->vc_type == CONV_TO_LATIN9) 5313 switch (c) 5314 { 5315 case 0x20ac: c = 0xa4; break; // euro 5316 case 0x0160: c = 0xa6; break; // S hat 5317 case 0x0161: c = 0xa8; break; // S -hat 5318 case 0x017d: c = 0xb4; break; // Z hat 5319 case 0x017e: c = 0xb8; break; // Z -hat 5320 case 0x0152: c = 0xbc; break; // OE 5321 case 0x0153: c = 0xbd; break; // oe 5322 case 0x0178: c = 0xbe; break; // Y 5323 case 0xa4: 5324 case 0xa6: 5325 case 0xa8: 5326 case 0xb4: 5327 case 0xb8: 5328 case 0xbc: 5329 case 0xbd: 5330 case 0xbe: c = 0x100; break; // not in latin9 5331 } 5332 if (!utf_iscomposing(c)) // skip composing chars 5333 { 5334 if (c < 0x100) 5335 *d++ = c; 5336 else if (vcp->vc_fail) 5337 { 5338 vim_free(retval); 5339 return NULL; 5340 } 5341 else 5342 { 5343 *d++ = 0xbf; 5344 if (utf_char2cells(c) > 1) 5345 *d++ = '?'; 5346 } 5347 } 5348 i += l - 1; 5349 } 5350 } 5351 *d = NUL; 5352 if (lenp != NULL) 5353 *lenp = (int)(d - retval); 5354 break; 5355 5356 # ifdef MACOS_CONVERT 5357 case CONV_MAC_LATIN1: 5358 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 5359 'm', 'l', unconvlenp); 5360 break; 5361 5362 case CONV_LATIN1_MAC: 5363 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 5364 'l', 'm', unconvlenp); 5365 break; 5366 5367 case CONV_MAC_UTF8: 5368 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 5369 'm', 'u', unconvlenp); 5370 break; 5371 5372 case CONV_UTF8_MAC: 5373 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 5374 'u', 'm', unconvlenp); 5375 break; 5376 # endif 5377 5378 # ifdef USE_ICONV 5379 case CONV_ICONV: // conversion with output_conv.vc_fd 5380 retval = iconv_string(vcp, ptr, len, unconvlenp, lenp); 5381 break; 5382 # endif 5383 # ifdef MSWIN 5384 case CONV_CODEPAGE: // codepage -> codepage 5385 { 5386 int retlen; 5387 int tmp_len; 5388 short_u *tmp; 5389 5390 // 1. codepage/UTF-8 -> ucs-2. 5391 if (vcp->vc_cpfrom == 0) 5392 tmp_len = utf8_to_utf16(ptr, len, NULL, NULL); 5393 else 5394 { 5395 tmp_len = MultiByteToWideChar(vcp->vc_cpfrom, 5396 unconvlenp ? MB_ERR_INVALID_CHARS : 0, 5397 (char *)ptr, len, 0, 0); 5398 if (tmp_len == 0 5399 && GetLastError() == ERROR_NO_UNICODE_TRANSLATION) 5400 { 5401 if (lenp != NULL) 5402 *lenp = 0; 5403 if (unconvlenp != NULL) 5404 *unconvlenp = len; 5405 retval = alloc(1); 5406 if (retval) 5407 retval[0] = NUL; 5408 return retval; 5409 } 5410 } 5411 tmp = ALLOC_MULT(short_u, tmp_len); 5412 if (tmp == NULL) 5413 break; 5414 if (vcp->vc_cpfrom == 0) 5415 utf8_to_utf16(ptr, len, tmp, unconvlenp); 5416 else 5417 MultiByteToWideChar(vcp->vc_cpfrom, 0, 5418 (char *)ptr, len, tmp, tmp_len); 5419 5420 // 2. ucs-2 -> codepage/UTF-8. 5421 if (vcp->vc_cpto == 0) 5422 retlen = utf16_to_utf8(tmp, tmp_len, NULL); 5423 else 5424 retlen = WideCharToMultiByte(vcp->vc_cpto, 0, 5425 tmp, tmp_len, 0, 0, 0, 0); 5426 retval = alloc(retlen + 1); 5427 if (retval != NULL) 5428 { 5429 if (vcp->vc_cpto == 0) 5430 utf16_to_utf8(tmp, tmp_len, retval); 5431 else 5432 WideCharToMultiByte(vcp->vc_cpto, 0, 5433 tmp, tmp_len, 5434 (char *)retval, retlen, 0, 0); 5435 retval[retlen] = NUL; 5436 if (lenp != NULL) 5437 *lenp = retlen; 5438 } 5439 vim_free(tmp); 5440 break; 5441 } 5442 # endif 5443 } 5444 5445 return retval; 5446 } 5447 5448 #if defined(FEAT_EVAL) || defined(PROTO) 5449 5450 /* 5451 * Table set by setcellwidths(). 5452 */ 5453 typedef struct 5454 { 5455 long first; 5456 long last; 5457 char width; 5458 } cw_interval_T; 5459 5460 static cw_interval_T *cw_table = NULL; 5461 static size_t cw_table_size = 0; 5462 5463 /* 5464 * Return 1 or 2 when "c" is in the cellwidth table. 5465 * Return 0 if not. 5466 */ 5467 static int 5468 cw_value(int c) 5469 { 5470 int mid, bot, top; 5471 5472 if (cw_table == NULL) 5473 return 0; 5474 5475 // first quick check for Latin1 etc. characters 5476 if (c < cw_table[0].first) 5477 return 0; 5478 5479 // binary search in table 5480 bot = 0; 5481 top = (int)cw_table_size - 1; 5482 while (top >= bot) 5483 { 5484 mid = (bot + top) / 2; 5485 if (cw_table[mid].last < c) 5486 bot = mid + 1; 5487 else if (cw_table[mid].first > c) 5488 top = mid - 1; 5489 else 5490 return cw_table[mid].width; 5491 } 5492 return 0; 5493 } 5494 5495 static int 5496 tv_nr_compare(const void *a1, const void *a2) 5497 { 5498 listitem_T *li1 = *(listitem_T **)a1; 5499 listitem_T *li2 = *(listitem_T **)a2; 5500 5501 return li1->li_tv.vval.v_number - li2->li_tv.vval.v_number; 5502 } 5503 5504 void 5505 f_setcellwidths(typval_T *argvars, typval_T *rettv UNUSED) 5506 { 5507 list_T *l; 5508 listitem_T *li; 5509 int item; 5510 int i; 5511 listitem_T **ptrs; 5512 cw_interval_T *table; 5513 5514 if (in_vim9script() && check_for_list_arg(argvars, 0) == FAIL) 5515 return; 5516 5517 if (argvars[0].v_type != VAR_LIST || argvars[0].vval.v_list == NULL) 5518 { 5519 emsg(_(e_listreq)); 5520 return; 5521 } 5522 l = argvars[0].vval.v_list; 5523 if (l->lv_len == 0) 5524 { 5525 // Clearing the table. 5526 vim_free(cw_table); 5527 cw_table = NULL; 5528 cw_table_size = 0; 5529 return; 5530 } 5531 5532 ptrs = ALLOC_MULT(listitem_T *, l->lv_len); 5533 if (ptrs == NULL) 5534 return; 5535 5536 // Check that all entries are a list with three numbers, the range is 5537 // valid and the cell width is valid. 5538 item = 0; 5539 for (li = l->lv_first; li != NULL; li = li->li_next) 5540 { 5541 listitem_T *lili; 5542 varnumber_T n1; 5543 5544 if (li->li_tv.v_type != VAR_LIST || li->li_tv.vval.v_list == NULL) 5545 { 5546 semsg(_(e_list_item_nr_is_not_list), item); 5547 vim_free(ptrs); 5548 return; 5549 } 5550 5551 lili = li->li_tv.vval.v_list->lv_first; 5552 ptrs[item] = lili; 5553 for (i = 0; lili != NULL; lili = lili->li_next, ++i) 5554 { 5555 if (lili->li_tv.v_type != VAR_NUMBER) 5556 break; 5557 if (i == 0) 5558 { 5559 n1 = lili->li_tv.vval.v_number; 5560 if (n1 < 0x100) 5561 { 5562 emsg(_(e_only_values_of_0x100_and_higher_supported)); 5563 vim_free(ptrs); 5564 return; 5565 } 5566 } 5567 else if (i == 1 && lili->li_tv.vval.v_number < n1) 5568 { 5569 semsg(_(e_list_item_nr_range_invalid), item); 5570 vim_free(ptrs); 5571 return; 5572 } 5573 else if (i == 2 && (lili->li_tv.vval.v_number < 1 5574 || lili->li_tv.vval.v_number > 2)) 5575 { 5576 semsg(_(e_list_item_nr_cell_width_invalid), item); 5577 vim_free(ptrs); 5578 return; 5579 } 5580 } 5581 if (i != 3) 5582 { 5583 semsg(_(e_list_item_nr_does_not_contain_3_numbers), item); 5584 vim_free(ptrs); 5585 return; 5586 } 5587 ++item; 5588 } 5589 5590 // Sort the list on the first number. 5591 qsort((void *)ptrs, (size_t)l->lv_len, sizeof(listitem_T *), tv_nr_compare); 5592 5593 table = ALLOC_MULT(cw_interval_T, l->lv_len); 5594 if (table == NULL) 5595 { 5596 vim_free(ptrs); 5597 return; 5598 } 5599 5600 // Store the items in the new table. 5601 item = 0; 5602 for (item = 0; item < l->lv_len; ++item) 5603 { 5604 listitem_T *lili = ptrs[item]; 5605 varnumber_T n1; 5606 5607 n1 = lili->li_tv.vval.v_number; 5608 if (item > 0 && n1 <= table[item - 1].last) 5609 { 5610 semsg(_(e_overlapping_ranges_for_nr), (long)n1); 5611 vim_free(ptrs); 5612 vim_free(table); 5613 return; 5614 } 5615 table[item].first = n1; 5616 lili = lili->li_next; 5617 table[item].last = lili->li_tv.vval.v_number; 5618 lili = lili->li_next; 5619 table[item].width = lili->li_tv.vval.v_number; 5620 } 5621 5622 vim_free(ptrs); 5623 vim_free(cw_table); 5624 cw_table = table; 5625 cw_table_size = l->lv_len; 5626 } 5627 5628 void 5629 f_charclass(typval_T *argvars, typval_T *rettv UNUSED) 5630 { 5631 if (check_for_string_arg(argvars, 0) == FAIL 5632 || argvars[0].vval.v_string == NULL) 5633 return; 5634 rettv->vval.v_number = mb_get_class(argvars[0].vval.v_string); 5635 } 5636 #endif 5637