1 /* vi:set ts=8 sts=4 sw=4: 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 two 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 # include <windows.h> 87 # ifdef WIN32 88 # undef WIN32 /* Some windows.h define WIN32, we don't want that here. */ 89 # endif 90 #endif 91 92 #if (defined(WIN3264) || defined(WIN32UNIX)) && !defined(__MINGW32__) 93 # include <winnls.h> 94 #endif 95 96 #ifdef FEAT_GUI_X11 97 # include <X11/Intrinsic.h> 98 #endif 99 #ifdef X_LOCALE 100 #include <X11/Xlocale.h> 101 #endif 102 103 #if defined(FEAT_GUI_GTK) && defined(FEAT_XIM) && defined(HAVE_GTK2) 104 # include <gdk/gdkkeysyms.h> 105 # ifdef WIN3264 106 # include <gdk/gdkwin32.h> 107 # else 108 # include <gdk/gdkx.h> 109 # endif 110 #endif 111 112 #ifdef HAVE_WCHAR_H 113 # include <wchar.h> 114 #endif 115 116 #if 0 117 /* This has been disabled, because several people reported problems with the 118 * wcwidth() and iswprint() library functions, esp. for Hebrew. */ 119 # ifdef __STDC_ISO_10646__ 120 # define USE_WCHAR_FUNCTIONS 121 # endif 122 #endif 123 124 #if defined(FEAT_MBYTE) || defined(PROTO) 125 126 static int enc_canon_search __ARGS((char_u *name)); 127 static int dbcs_char2len __ARGS((int c)); 128 static int dbcs_char2bytes __ARGS((int c, char_u *buf)); 129 static int dbcs_ptr2len __ARGS((char_u *p)); 130 static int dbcs_char2cells __ARGS((int c)); 131 static int dbcs_ptr2char __ARGS((char_u *p)); 132 133 /* Lookup table to quickly get the length in bytes of a UTF-8 character from 134 * the first byte of a UTF-8 string. Bytes which are illegal when used as the 135 * first byte have a one, because these will be used separately. */ 136 static char utf8len_tab[256] = 137 { 138 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, 139 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, 140 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, 141 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, 142 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, /*bogus*/ 143 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, /*bogus*/ 144 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, 145 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, 146 }; 147 148 /* 149 * XIM often causes trouble. Define XIM_DEBUG to get a log of XIM callbacks 150 * in the "xim.log" file. 151 */ 152 /* #define XIM_DEBUG */ 153 #ifdef XIM_DEBUG 154 static void 155 xim_log(char *s, ...) 156 { 157 va_list arglist; 158 static FILE *fd = NULL; 159 160 if (fd == (FILE *)-1) 161 return; 162 if (fd == NULL) 163 { 164 fd = mch_fopen("xim.log", "w"); 165 if (fd == NULL) 166 { 167 EMSG("Cannot open xim.log"); 168 fd = (FILE *)-1; 169 return; 170 } 171 } 172 173 va_start(arglist, s); 174 vfprintf(fd, s, arglist); 175 va_end(arglist); 176 } 177 #endif 178 179 #endif 180 181 #if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO) 182 /* 183 * Canonical encoding names and their properties. 184 * "iso-8859-n" is handled by enc_canonize() directly. 185 */ 186 static struct 187 { char *name; int prop; int codepage;} 188 enc_canon_table[] = 189 { 190 #define IDX_LATIN_1 0 191 {"latin1", ENC_8BIT + ENC_LATIN1, 1252}, 192 #define IDX_ISO_2 1 193 {"iso-8859-2", ENC_8BIT, 0}, 194 #define IDX_ISO_3 2 195 {"iso-8859-3", ENC_8BIT, 0}, 196 #define IDX_ISO_4 3 197 {"iso-8859-4", ENC_8BIT, 0}, 198 #define IDX_ISO_5 4 199 {"iso-8859-5", ENC_8BIT, 0}, 200 #define IDX_ISO_6 5 201 {"iso-8859-6", ENC_8BIT, 0}, 202 #define IDX_ISO_7 6 203 {"iso-8859-7", ENC_8BIT, 0}, 204 #define IDX_ISO_8 7 205 {"iso-8859-8", ENC_8BIT, 0}, 206 #define IDX_ISO_9 8 207 {"iso-8859-9", ENC_8BIT, 0}, 208 #define IDX_ISO_10 9 209 {"iso-8859-10", ENC_8BIT, 0}, 210 #define IDX_ISO_11 10 211 {"iso-8859-11", ENC_8BIT, 0}, 212 #define IDX_ISO_13 11 213 {"iso-8859-13", ENC_8BIT, 0}, 214 #define IDX_ISO_14 12 215 {"iso-8859-14", ENC_8BIT, 0}, 216 #define IDX_ISO_15 13 217 {"iso-8859-15", ENC_8BIT + ENC_LATIN9, 0}, 218 #define IDX_KOI8_R 14 219 {"koi8-r", ENC_8BIT, 0}, 220 #define IDX_KOI8_U 15 221 {"koi8-u", ENC_8BIT, 0}, 222 #define IDX_UTF8 16 223 {"utf-8", ENC_UNICODE, 0}, 224 #define IDX_UCS2 17 225 {"ucs-2", ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0}, 226 #define IDX_UCS2LE 18 227 {"ucs-2le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0}, 228 #define IDX_UTF16 19 229 {"utf-16", ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0}, 230 #define IDX_UTF16LE 20 231 {"utf-16le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0}, 232 #define IDX_UCS4 21 233 {"ucs-4", ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0}, 234 #define IDX_UCS4LE 22 235 {"ucs-4le", ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0}, 236 237 /* For debugging DBCS encoding on Unix. */ 238 #define IDX_DEBUG 23 239 {"debug", ENC_DBCS, DBCS_DEBUG}, 240 #define IDX_EUC_JP 24 241 {"euc-jp", ENC_DBCS, DBCS_JPNU}, 242 #define IDX_SJIS 25 243 {"sjis", ENC_DBCS, DBCS_JPN}, 244 #define IDX_EUC_KR 26 245 {"euc-kr", ENC_DBCS, DBCS_KORU}, 246 #define IDX_EUC_CN 27 247 {"euc-cn", ENC_DBCS, DBCS_CHSU}, 248 #define IDX_EUC_TW 28 249 {"euc-tw", ENC_DBCS, DBCS_CHTU}, 250 #define IDX_BIG5 29 251 {"big5", ENC_DBCS, DBCS_CHT}, 252 253 /* MS-DOS and MS-Windows codepages are included here, so that they can be 254 * used on Unix too. Most of them are similar to ISO-8859 encodings, but 255 * not exactly the same. */ 256 #define IDX_CP437 30 257 {"cp437", ENC_8BIT, 437}, /* like iso-8859-1 */ 258 #define IDX_CP737 31 259 {"cp737", ENC_8BIT, 737}, /* like iso-8859-7 */ 260 #define IDX_CP775 32 261 {"cp775", ENC_8BIT, 775}, /* Baltic */ 262 #define IDX_CP850 33 263 {"cp850", ENC_8BIT, 850}, /* like iso-8859-4 */ 264 #define IDX_CP852 34 265 {"cp852", ENC_8BIT, 852}, /* like iso-8859-1 */ 266 #define IDX_CP855 35 267 {"cp855", ENC_8BIT, 855}, /* like iso-8859-2 */ 268 #define IDX_CP857 36 269 {"cp857", ENC_8BIT, 857}, /* like iso-8859-5 */ 270 #define IDX_CP860 37 271 {"cp860", ENC_8BIT, 860}, /* like iso-8859-9 */ 272 #define IDX_CP861 38 273 {"cp861", ENC_8BIT, 861}, /* like iso-8859-1 */ 274 #define IDX_CP862 39 275 {"cp862", ENC_8BIT, 862}, /* like iso-8859-1 */ 276 #define IDX_CP863 40 277 {"cp863", ENC_8BIT, 863}, /* like iso-8859-8 */ 278 #define IDX_CP865 41 279 {"cp865", ENC_8BIT, 865}, /* like iso-8859-1 */ 280 #define IDX_CP866 42 281 {"cp866", ENC_8BIT, 866}, /* like iso-8859-5 */ 282 #define IDX_CP869 43 283 {"cp869", ENC_8BIT, 869}, /* like iso-8859-7 */ 284 #define IDX_CP874 44 285 {"cp874", ENC_8BIT, 874}, /* Thai */ 286 #define IDX_CP932 45 287 {"cp932", ENC_DBCS, DBCS_JPN}, 288 #define IDX_CP936 46 289 {"cp936", ENC_DBCS, DBCS_CHS}, 290 #define IDX_CP949 47 291 {"cp949", ENC_DBCS, DBCS_KOR}, 292 #define IDX_CP950 48 293 {"cp950", ENC_DBCS, DBCS_CHT}, 294 #define IDX_CP1250 49 295 {"cp1250", ENC_8BIT, 1250}, /* Czech, Polish, etc. */ 296 #define IDX_CP1251 50 297 {"cp1251", ENC_8BIT, 1251}, /* Cyrillic */ 298 /* cp1252 is considered to be equal to latin1 */ 299 #define IDX_CP1253 51 300 {"cp1253", ENC_8BIT, 1253}, /* Greek */ 301 #define IDX_CP1254 52 302 {"cp1254", ENC_8BIT, 1254}, /* Turkish */ 303 #define IDX_CP1255 53 304 {"cp1255", ENC_8BIT, 1255}, /* Hebrew */ 305 #define IDX_CP1256 54 306 {"cp1256", ENC_8BIT, 1256}, /* Arabic */ 307 #define IDX_CP1257 55 308 {"cp1257", ENC_8BIT, 1257}, /* Baltic */ 309 #define IDX_CP1258 56 310 {"cp1258", ENC_8BIT, 1258}, /* Vietnamese */ 311 312 #define IDX_MACROMAN 57 313 {"macroman", ENC_8BIT + ENC_MACROMAN, 0}, /* Mac OS */ 314 #define IDX_DECMCS 58 315 {"dec-mcs", ENC_8BIT, 0}, /* DEC MCS */ 316 #define IDX_HPROMAN8 59 317 {"hp-roman8", ENC_8BIT, 0}, /* HP Roman8 */ 318 #define IDX_COUNT 60 319 }; 320 321 /* 322 * Aliases for encoding names. 323 */ 324 static struct 325 { char *name; int canon;} 326 enc_alias_table[] = 327 { 328 {"ansi", IDX_LATIN_1}, 329 {"iso-8859-1", IDX_LATIN_1}, 330 {"latin2", IDX_ISO_2}, 331 {"latin3", IDX_ISO_3}, 332 {"latin4", IDX_ISO_4}, 333 {"cyrillic", IDX_ISO_5}, 334 {"arabic", IDX_ISO_6}, 335 {"greek", IDX_ISO_7}, 336 #ifdef WIN3264 337 {"hebrew", IDX_CP1255}, 338 #else 339 {"hebrew", IDX_ISO_8}, 340 #endif 341 {"latin5", IDX_ISO_9}, 342 {"turkish", IDX_ISO_9}, /* ? */ 343 {"latin6", IDX_ISO_10}, 344 {"nordic", IDX_ISO_10}, /* ? */ 345 {"thai", IDX_ISO_11}, /* ? */ 346 {"latin7", IDX_ISO_13}, 347 {"latin8", IDX_ISO_14}, 348 {"latin9", IDX_ISO_15}, 349 {"utf8", IDX_UTF8}, 350 {"unicode", IDX_UCS2}, 351 {"ucs2", IDX_UCS2}, 352 {"ucs2be", IDX_UCS2}, 353 {"ucs-2be", IDX_UCS2}, 354 {"ucs2le", IDX_UCS2LE}, 355 {"utf16", IDX_UTF16}, 356 {"utf16be", IDX_UTF16}, 357 {"utf-16be", IDX_UTF16}, 358 {"utf16le", IDX_UTF16LE}, 359 {"ucs4", IDX_UCS4}, 360 {"ucs4be", IDX_UCS4}, 361 {"ucs-4be", IDX_UCS4}, 362 {"ucs4le", IDX_UCS4LE}, 363 {"932", IDX_CP932}, 364 {"949", IDX_CP949}, 365 {"936", IDX_CP936}, 366 {"gbk", IDX_CP936}, 367 {"950", IDX_CP950}, 368 {"eucjp", IDX_EUC_JP}, 369 {"unix-jis", IDX_EUC_JP}, 370 {"ujis", IDX_EUC_JP}, 371 {"shift-jis", IDX_SJIS}, 372 {"euckr", IDX_EUC_KR}, 373 {"5601", IDX_EUC_KR}, /* Sun: KS C 5601 */ 374 {"euccn", IDX_EUC_CN}, 375 {"gb2312", IDX_EUC_CN}, 376 {"euctw", IDX_EUC_TW}, 377 #if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS) 378 {"japan", IDX_CP932}, 379 {"korea", IDX_CP949}, 380 {"prc", IDX_CP936}, 381 {"chinese", IDX_CP936}, 382 {"taiwan", IDX_CP950}, 383 {"big5", IDX_CP950}, 384 #else 385 {"japan", IDX_EUC_JP}, 386 {"korea", IDX_EUC_KR}, 387 {"prc", IDX_EUC_CN}, 388 {"chinese", IDX_EUC_CN}, 389 {"taiwan", IDX_EUC_TW}, 390 {"cp950", IDX_BIG5}, 391 {"950", IDX_BIG5}, 392 #endif 393 {"mac", IDX_MACROMAN}, 394 {"mac-roman", IDX_MACROMAN}, 395 {NULL, 0} 396 }; 397 398 #ifndef CP_UTF8 399 # define CP_UTF8 65001 /* magic number from winnls.h */ 400 #endif 401 402 /* 403 * Find encoding "name" in the list of canonical encoding names. 404 * Returns -1 if not found. 405 */ 406 static int 407 enc_canon_search(name) 408 char_u *name; 409 { 410 int i; 411 412 for (i = 0; i < IDX_COUNT; ++i) 413 if (STRCMP(name, enc_canon_table[i].name) == 0) 414 return i; 415 return -1; 416 } 417 418 #endif 419 420 #if defined(FEAT_MBYTE) || defined(PROTO) 421 422 /* 423 * Find canonical encoding "name" in the list and return its properties. 424 * Returns 0 if not found. 425 */ 426 int 427 enc_canon_props(name) 428 char_u *name; 429 { 430 int i; 431 432 i = enc_canon_search(name); 433 if (i >= 0) 434 return enc_canon_table[i].prop; 435 #ifdef WIN3264 436 if (name[0] == 'c' && name[1] == 'p' && VIM_ISDIGIT(name[2])) 437 { 438 CPINFO cpinfo; 439 440 /* Get info on this codepage to find out what it is. */ 441 if (GetCPInfo(atoi(name + 2), &cpinfo) != 0) 442 { 443 if (cpinfo.MaxCharSize == 1) /* some single-byte encoding */ 444 return ENC_8BIT; 445 if (cpinfo.MaxCharSize == 2 446 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) 447 /* must be a DBCS encoding */ 448 return ENC_DBCS; 449 } 450 return 0; 451 } 452 #endif 453 if (STRNCMP(name, "2byte-", 6) == 0) 454 return ENC_DBCS; 455 if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0) 456 return ENC_8BIT; 457 return 0; 458 } 459 460 /* 461 * Set up for using multi-byte characters. 462 * Called in three cases: 463 * - by main() to initialize (p_enc == NULL) 464 * - by set_init_1() after 'encoding' was set to its default. 465 * - by do_set() when 'encoding' has been set. 466 * p_enc must have been passed through enc_canonize() already. 467 * Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags. 468 * Fills mb_bytelen_tab[] and returns NULL when there are no problems. 469 * When there is something wrong: Returns an error message and doesn't change 470 * anything. 471 */ 472 char_u * 473 mb_init() 474 { 475 int i; 476 int idx; 477 int n; 478 int enc_dbcs_new = 0; 479 #if defined(USE_ICONV) && !defined(WIN3264) && !defined(WIN32UNIX) \ 480 && !defined(MACOS) 481 # define LEN_FROM_CONV 482 vimconv_T vimconv; 483 char_u *p; 484 #endif 485 486 if (p_enc == NULL) 487 { 488 /* Just starting up: set the whole table to one's. */ 489 for (i = 0; i < 256; ++i) 490 mb_bytelen_tab[i] = 1; 491 input_conv.vc_type = CONV_NONE; 492 input_conv.vc_factor = 1; 493 output_conv.vc_type = CONV_NONE; 494 return NULL; 495 } 496 497 #ifdef WIN3264 498 if (p_enc[0] == 'c' && p_enc[1] == 'p' && VIM_ISDIGIT(p_enc[2])) 499 { 500 CPINFO cpinfo; 501 502 /* Get info on this codepage to find out what it is. */ 503 if (GetCPInfo(atoi(p_enc + 2), &cpinfo) != 0) 504 { 505 if (cpinfo.MaxCharSize == 1) 506 { 507 /* some single-byte encoding */ 508 enc_unicode = 0; 509 enc_utf8 = FALSE; 510 } 511 else if (cpinfo.MaxCharSize == 2 512 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) 513 { 514 /* must be a DBCS encoding, check below */ 515 enc_dbcs_new = atoi(p_enc + 2); 516 } 517 else 518 goto codepage_invalid; 519 } 520 else if (GetLastError() == ERROR_INVALID_PARAMETER) 521 { 522 codepage_invalid: 523 return (char_u *)N_("E543: Not a valid codepage"); 524 } 525 } 526 #endif 527 else if (STRNCMP(p_enc, "8bit-", 5) == 0 528 || STRNCMP(p_enc, "iso-8859-", 9) == 0) 529 { 530 /* Accept any "8bit-" or "iso-8859-" name. */ 531 enc_unicode = 0; 532 enc_utf8 = FALSE; 533 } 534 else if (STRNCMP(p_enc, "2byte-", 6) == 0) 535 { 536 #ifdef WIN3264 537 /* Windows: accept only valid codepage numbers, check below. */ 538 if (p_enc[6] != 'c' || p_enc[7] != 'p' 539 || (enc_dbcs_new = atoi(p_enc + 8)) == 0) 540 return e_invarg; 541 #else 542 /* Unix: accept any "2byte-" name, assume current locale. */ 543 enc_dbcs_new = DBCS_2BYTE; 544 #endif 545 } 546 else if ((idx = enc_canon_search(p_enc)) >= 0) 547 { 548 i = enc_canon_table[idx].prop; 549 if (i & ENC_UNICODE) 550 { 551 /* Unicode */ 552 enc_utf8 = TRUE; 553 if (i & (ENC_2BYTE | ENC_2WORD)) 554 enc_unicode = 2; 555 else if (i & ENC_4BYTE) 556 enc_unicode = 4; 557 else 558 enc_unicode = 0; 559 } 560 else if (i & ENC_DBCS) 561 { 562 /* 2byte, handle below */ 563 enc_dbcs_new = enc_canon_table[idx].codepage; 564 } 565 else 566 { 567 /* Must be 8-bit. */ 568 enc_unicode = 0; 569 enc_utf8 = FALSE; 570 } 571 } 572 else /* Don't know what encoding this is, reject it. */ 573 return e_invarg; 574 575 if (enc_dbcs_new != 0) 576 { 577 #ifdef WIN3264 578 /* Check if the DBCS code page is OK. */ 579 if (!IsValidCodePage(enc_dbcs_new)) 580 goto codepage_invalid; 581 #endif 582 enc_unicode = 0; 583 enc_utf8 = FALSE; 584 } 585 enc_dbcs = enc_dbcs_new; 586 has_mbyte = (enc_dbcs != 0 || enc_utf8); 587 588 #ifdef WIN3264 589 enc_codepage = encname2codepage(p_enc); 590 enc_latin9 = (STRCMP(p_enc, "iso-8859-15") == 0); 591 #endif 592 593 /* Detect an encoding that uses latin1 characters. */ 594 enc_latin1like = (enc_utf8 || STRCMP(p_enc, "latin1") == 0 595 || STRCMP(p_enc, "iso-8859-15") == 0); 596 597 /* 598 * Set the function pointers. 599 */ 600 if (enc_utf8) 601 { 602 mb_ptr2len = utfc_ptr2len; 603 mb_char2len = utf_char2len; 604 mb_char2bytes = utf_char2bytes; 605 mb_ptr2cells = utf_ptr2cells; 606 mb_char2cells = utf_char2cells; 607 mb_off2cells = utf_off2cells; 608 mb_ptr2char = utf_ptr2char; 609 mb_head_off = utf_head_off; 610 } 611 else if (enc_dbcs != 0) 612 { 613 mb_ptr2len = dbcs_ptr2len; 614 mb_char2len = dbcs_char2len; 615 mb_char2bytes = dbcs_char2bytes; 616 mb_ptr2cells = dbcs_ptr2cells; 617 mb_char2cells = dbcs_char2cells; 618 mb_off2cells = dbcs_off2cells; 619 mb_ptr2char = dbcs_ptr2char; 620 mb_head_off = dbcs_head_off; 621 } 622 else 623 { 624 mb_ptr2len = latin_ptr2len; 625 mb_char2len = latin_char2len; 626 mb_char2bytes = latin_char2bytes; 627 mb_ptr2cells = latin_ptr2cells; 628 mb_char2cells = latin_char2cells; 629 mb_off2cells = latin_off2cells; 630 mb_ptr2char = latin_ptr2char; 631 mb_head_off = latin_head_off; 632 } 633 634 /* 635 * Fill the mb_bytelen_tab[] for MB_BYTE2LEN(). 636 */ 637 #ifdef LEN_FROM_CONV 638 /* When 'encoding' is different from the current locale mblen() won't 639 * work. Use conversion to "utf-8" instead. */ 640 vimconv.vc_type = CONV_NONE; 641 if (enc_dbcs) 642 { 643 p = enc_locale(); 644 if (p == NULL || STRCMP(p, p_enc) != 0) 645 { 646 convert_setup(&vimconv, p_enc, (char_u *)"utf-8"); 647 vimconv.vc_fail = TRUE; 648 } 649 vim_free(p); 650 } 651 #endif 652 653 for (i = 0; i < 256; ++i) 654 { 655 /* Our own function to reliably check the length of UTF-8 characters, 656 * independent of mblen(). */ 657 if (enc_utf8) 658 n = utf8len_tab[i]; 659 else if (enc_dbcs == 0) 660 n = 1; 661 else 662 { 663 #if defined(WIN3264) || defined(WIN32UNIX) 664 /* enc_dbcs is set by setting 'fileencoding'. It becomes a Windows 665 * CodePage identifier, which we can pass directly in to Windows 666 * API */ 667 n = IsDBCSLeadByteEx(enc_dbcs, (BYTE)i) ? 2 : 1; 668 #else 669 # if defined(MACOS) || defined(__amigaos4__) 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]; 678 # ifdef X_LOCALE 679 # ifndef mblen 680 # define mblen _Xmblen 681 # endif 682 # endif 683 if (i == NUL) /* just in case mblen() can't handle "" */ 684 n = 1; 685 else 686 { 687 buf[0] = i; 688 buf[1] = 0; 689 #ifdef LEN_FROM_CONV 690 if (vimconv.vc_type != CONV_NONE) 691 { 692 /* 693 * string_convert() should fail when converting the first 694 * byte of a double-byte character. 695 */ 696 p = string_convert(&vimconv, (char_u *)buf, NULL); 697 if (p != NULL) 698 { 699 vim_free(p); 700 n = 1; 701 } 702 else 703 n = 2; 704 } 705 else 706 #endif 707 { 708 /* 709 * mblen() should return -1 for invalid (means the leading 710 * multibyte) character. However there are some platforms 711 * where mblen() returns 0 for invalid character. 712 * Therefore, following condition includes 0. 713 */ 714 (void)mblen(NULL, 0); /* First reset the state. */ 715 if (mblen(buf, (size_t)1) <= 0) 716 n = 2; 717 else 718 n = 1; 719 } 720 } 721 # endif 722 #endif 723 } 724 725 mb_bytelen_tab[i] = n; 726 } 727 728 #ifdef LEN_FROM_CONV 729 convert_setup(&vimconv, NULL, NULL); 730 #endif 731 732 /* The cell width depends on the type of multi-byte characters. */ 733 (void)init_chartab(); 734 735 /* When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] */ 736 screenalloc(FALSE); 737 738 /* When using Unicode, set default for 'fileencodings'. */ 739 if (enc_utf8 && !option_was_set((char_u *)"fencs")) 740 set_string_option_direct((char_u *)"fencs", -1, 741 (char_u *)"ucs-bom,utf-8,default,latin1", OPT_FREE, 0); 742 743 #if defined(HAVE_BIND_TEXTDOMAIN_CODESET) && defined(FEAT_GETTEXT) 744 /* GNU gettext 0.10.37 supports this feature: set the codeset used for 745 * translated messages independently from the current locale. */ 746 (void)bind_textdomain_codeset(VIMPACKAGE, 747 enc_utf8 ? "utf-8" : (char *)p_enc); 748 #endif 749 750 #ifdef WIN32 751 /* When changing 'encoding' while starting up, then convert the command 752 * line arguments from the active codepage to 'encoding'. */ 753 if (starting != 0) 754 fix_arg_enc(); 755 #endif 756 757 #ifdef FEAT_AUTOCMD 758 /* Fire an autocommand to let people do custom font setup. This must be 759 * after Vim has been setup for the new encoding. */ 760 apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf); 761 #endif 762 763 #ifdef FEAT_SPELL 764 /* Need to reload spell dictionaries */ 765 spell_reload(); 766 #endif 767 768 return NULL; 769 } 770 771 /* 772 * Return the size of the BOM for the current buffer: 773 * 0 - no BOM 774 * 2 - UCS-2 or UTF-16 BOM 775 * 4 - UCS-4 BOM 776 * 3 - UTF-8 BOM 777 */ 778 int 779 bomb_size() 780 { 781 int n = 0; 782 783 if (curbuf->b_p_bomb && !curbuf->b_p_bin) 784 { 785 if (*curbuf->b_p_fenc == NUL) 786 { 787 if (enc_utf8) 788 { 789 if (enc_unicode != 0) 790 n = enc_unicode; 791 else 792 n = 3; 793 } 794 } 795 else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0) 796 n = 3; 797 else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0 798 || STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0) 799 n = 2; 800 else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0) 801 n = 4; 802 } 803 return n; 804 } 805 806 /* 807 * Get class of pointer: 808 * 0 for blank or NUL 809 * 1 for punctuation 810 * 2 for an (ASCII) word character 811 * >2 for other word characters 812 */ 813 int 814 mb_get_class(p) 815 char_u *p; 816 { 817 if (MB_BYTE2LEN(p[0]) == 1) 818 { 819 if (p[0] == NUL || vim_iswhite(p[0])) 820 return 0; 821 if (vim_iswordc(p[0])) 822 return 2; 823 return 1; 824 } 825 if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL) 826 return dbcs_class(p[0], p[1]); 827 if (enc_utf8) 828 return utf_class(utf_ptr2char(p)); 829 return 0; 830 } 831 832 /* 833 * Get class of a double-byte character. This always returns 3 or bigger. 834 * TODO: Should return 1 for punctuation. 835 */ 836 int 837 dbcs_class(lead, trail) 838 unsigned lead; 839 unsigned trail; 840 { 841 switch (enc_dbcs) 842 { 843 /* please add classfy routine for your language in here */ 844 845 case DBCS_JPNU: /* ? */ 846 case DBCS_JPN: 847 { 848 /* JIS code classification */ 849 unsigned char lb = lead; 850 unsigned char tb = trail; 851 852 /* convert process code to JIS */ 853 # if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS) 854 /* process code is SJIS */ 855 if (lb <= 0x9f) 856 lb = (lb - 0x81) * 2 + 0x21; 857 else 858 lb = (lb - 0xc1) * 2 + 0x21; 859 if (tb <= 0x7e) 860 tb -= 0x1f; 861 else if (tb <= 0x9e) 862 tb -= 0x20; 863 else 864 { 865 tb -= 0x7e; 866 lb += 1; 867 } 868 # else 869 /* 870 * XXX: Code page identification can not use with all 871 * system! So, some other encoding information 872 * will be needed. 873 * In japanese: SJIS,EUC,UNICODE,(JIS) 874 * Note that JIS-code system don't use as 875 * process code in most system because it uses 876 * escape sequences(JIS is context depend encoding). 877 */ 878 /* assume process code is JAPANESE-EUC */ 879 lb &= 0x7f; 880 tb &= 0x7f; 881 # endif 882 /* exceptions */ 883 switch (lb << 8 | tb) 884 { 885 case 0x2121: /* ZENKAKU space */ 886 return 0; 887 case 0x2122: /* KU-TEN (Japanese comma) */ 888 case 0x2123: /* TOU-TEN (Japanese period) */ 889 case 0x2124: /* ZENKAKU comma */ 890 case 0x2125: /* ZENKAKU period */ 891 return 1; 892 case 0x213c: /* prolongedsound handled as KATAKANA */ 893 return 13; 894 } 895 /* sieved by KU code */ 896 switch (lb) 897 { 898 case 0x21: 899 case 0x22: 900 /* special symbols */ 901 return 10; 902 case 0x23: 903 /* alpha-numeric */ 904 return 11; 905 case 0x24: 906 /* hiragana */ 907 return 12; 908 case 0x25: 909 /* katakana */ 910 return 13; 911 case 0x26: 912 /* greek */ 913 return 14; 914 case 0x27: 915 /* russian */ 916 return 15; 917 case 0x28: 918 /* lines */ 919 return 16; 920 default: 921 /* kanji */ 922 return 17; 923 } 924 } 925 926 case DBCS_KORU: /* ? */ 927 case DBCS_KOR: 928 { 929 /* KS code classification */ 930 unsigned char c1 = lead; 931 unsigned char c2 = trail; 932 933 /* 934 * 20 : Hangul 935 * 21 : Hanja 936 * 22 : Symbols 937 * 23 : Alpha-numeric/Roman Letter (Full width) 938 * 24 : Hangul Letter(Alphabet) 939 * 25 : Roman Numeral/Greek Letter 940 * 26 : Box Drawings 941 * 27 : Unit Symbols 942 * 28 : Circled/Parenthesized Letter 943 * 29 : Hirigana/Katakana 944 * 30 : Cyrillic Letter 945 */ 946 947 if (c1 >= 0xB0 && c1 <= 0xC8) 948 /* Hangul */ 949 return 20; 950 #if defined(WIN3264) || defined(WIN32UNIX) 951 else if (c1 <= 0xA0 || c2 <= 0xA0) 952 /* Extended Hangul Region : MS UHC(Unified Hangul Code) */ 953 /* c1: 0x81-0xA0 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xFE 954 * c1: 0xA1-0xC6 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xA0 955 */ 956 return 20; 957 #endif 958 959 else if (c1 >= 0xCA && c1 <= 0xFD) 960 /* Hanja */ 961 return 21; 962 else switch (c1) 963 { 964 case 0xA1: 965 case 0xA2: 966 /* Symbols */ 967 return 22; 968 case 0xA3: 969 /* Alpha-numeric */ 970 return 23; 971 case 0xA4: 972 /* Hangul Letter(Alphabet) */ 973 return 24; 974 case 0xA5: 975 /* Roman Numeral/Greek Letter */ 976 return 25; 977 case 0xA6: 978 /* Box Drawings */ 979 return 26; 980 case 0xA7: 981 /* Unit Symbols */ 982 return 27; 983 case 0xA8: 984 case 0xA9: 985 if (c2 <= 0xAF) 986 return 25; /* Roman Letter */ 987 else if (c2 >= 0xF6) 988 return 22; /* Symbols */ 989 else 990 /* Circled/Parenthesized Letter */ 991 return 28; 992 case 0xAA: 993 case 0xAB: 994 /* Hirigana/Katakana */ 995 return 29; 996 case 0xAC: 997 /* Cyrillic Letter */ 998 return 30; 999 } 1000 } 1001 default: 1002 break; 1003 } 1004 return 3; 1005 } 1006 1007 /* 1008 * mb_char2len() function pointer. 1009 * Return length in bytes of character "c". 1010 * Returns 1 for a single-byte character. 1011 */ 1012 /* ARGSUSED */ 1013 int 1014 latin_char2len(c) 1015 int c; 1016 { 1017 return 1; 1018 } 1019 1020 static int 1021 dbcs_char2len(c) 1022 int c; 1023 { 1024 if (c >= 0x100) 1025 return 2; 1026 return 1; 1027 } 1028 1029 /* 1030 * mb_char2bytes() function pointer. 1031 * Convert a character to its bytes. 1032 * Returns the length in bytes. 1033 */ 1034 int 1035 latin_char2bytes(c, buf) 1036 int c; 1037 char_u *buf; 1038 { 1039 buf[0] = c; 1040 return 1; 1041 } 1042 1043 static int 1044 dbcs_char2bytes(c, buf) 1045 int c; 1046 char_u *buf; 1047 { 1048 if (c >= 0x100) 1049 { 1050 buf[0] = (unsigned)c >> 8; 1051 buf[1] = c; 1052 /* Never use a NUL byte, it causes lots of trouble. It's an invalid 1053 * character anyway. */ 1054 if (buf[1] == NUL) 1055 buf[1] = '\n'; 1056 return 2; 1057 } 1058 buf[0] = c; 1059 return 1; 1060 } 1061 1062 /* 1063 * mb_ptr2len() function pointer. 1064 * Get byte length of character at "*p" but stop at a NUL. 1065 * For UTF-8 this includes following composing characters. 1066 * Returns 0 when *p is NUL. 1067 * 1068 */ 1069 int 1070 latin_ptr2len(p) 1071 char_u *p; 1072 { 1073 return MB_BYTE2LEN(*p); 1074 } 1075 1076 static int 1077 dbcs_ptr2len(p) 1078 char_u *p; 1079 { 1080 int len; 1081 1082 /* Check if second byte is not missing. */ 1083 len = MB_BYTE2LEN(*p); 1084 if (len == 2 && p[1] == NUL) 1085 len = 1; 1086 return len; 1087 } 1088 1089 struct interval 1090 { 1091 unsigned short first; 1092 unsigned short last; 1093 }; 1094 static int intable __ARGS((struct interval *table, size_t size, int c)); 1095 1096 /* 1097 * Return TRUE if "c" is in "table[size / sizeof(struct interval)]". 1098 */ 1099 static int 1100 intable(table, size, c) 1101 struct interval *table; 1102 size_t size; 1103 int c; 1104 { 1105 int mid, bot, top; 1106 1107 /* first quick check for Latin1 etc. characters */ 1108 if (c < table[0].first) 1109 return FALSE; 1110 1111 /* binary search in table */ 1112 bot = 0; 1113 top = (int)(size / sizeof(struct interval) - 1); 1114 while (top >= bot) 1115 { 1116 mid = (bot + top) / 2; 1117 if (table[mid].last < c) 1118 bot = mid + 1; 1119 else if (table[mid].first > c) 1120 top = mid - 1; 1121 else 1122 return TRUE; 1123 } 1124 return FALSE; 1125 } 1126 1127 /* 1128 * For UTF-8 character "c" return 2 for a double-width character, 1 for others. 1129 * Returns 4 or 6 for an unprintable character. 1130 * Is only correct for characters >= 0x80. 1131 * When p_ambw is "double", return 2 for a character with East Asian Width 1132 * class 'A'(mbiguous). 1133 */ 1134 int 1135 utf_char2cells(c) 1136 int c; 1137 { 1138 /* sorted list of non-overlapping intervals of East Asian Ambiguous 1139 * characters, generated with: 1140 * "uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf c" */ 1141 static struct interval ambiguous[] = { 1142 {0x00A1, 0x00A1}, {0x00A4, 0x00A4}, {0x00A7, 0x00A8}, 1143 {0x00AA, 0x00AA}, {0x00AE, 0x00AE}, {0x00B0, 0x00B4}, 1144 {0x00B6, 0x00BA}, {0x00BC, 0x00BF}, {0x00C6, 0x00C6}, 1145 {0x00D0, 0x00D0}, {0x00D7, 0x00D8}, {0x00DE, 0x00E1}, 1146 {0x00E6, 0x00E6}, {0x00E8, 0x00EA}, {0x00EC, 0x00ED}, 1147 {0x00F0, 0x00F0}, {0x00F2, 0x00F3}, {0x00F7, 0x00FA}, 1148 {0x00FC, 0x00FC}, {0x00FE, 0x00FE}, {0x0101, 0x0101}, 1149 {0x0111, 0x0111}, {0x0113, 0x0113}, {0x011B, 0x011B}, 1150 {0x0126, 0x0127}, {0x012B, 0x012B}, {0x0131, 0x0133}, 1151 {0x0138, 0x0138}, {0x013F, 0x0142}, {0x0144, 0x0144}, 1152 {0x0148, 0x014B}, {0x014D, 0x014D}, {0x0152, 0x0153}, 1153 {0x0166, 0x0167}, {0x016B, 0x016B}, {0x01CE, 0x01CE}, 1154 {0x01D0, 0x01D0}, {0x01D2, 0x01D2}, {0x01D4, 0x01D4}, 1155 {0x01D6, 0x01D6}, {0x01D8, 0x01D8}, {0x01DA, 0x01DA}, 1156 {0x01DC, 0x01DC}, {0x0251, 0x0251}, {0x0261, 0x0261}, 1157 {0x02C4, 0x02C4}, {0x02C7, 0x02C7}, {0x02C9, 0x02CB}, 1158 {0x02CD, 0x02CD}, {0x02D0, 0x02D0}, {0x02D8, 0x02DB}, 1159 {0x02DD, 0x02DD}, {0x02DF, 0x02DF}, {0x0391, 0x03A1}, 1160 {0x03A3, 0x03A9}, {0x03B1, 0x03C1}, {0x03C3, 0x03C9}, 1161 {0x0401, 0x0401}, {0x0410, 0x044F}, {0x0451, 0x0451}, 1162 {0x2010, 0x2010}, {0x2013, 0x2016}, {0x2018, 0x2019}, 1163 {0x201C, 0x201D}, {0x2020, 0x2022}, {0x2024, 0x2027}, 1164 {0x2030, 0x2030}, {0x2032, 0x2033}, {0x2035, 0x2035}, 1165 {0x203B, 0x203B}, {0x203E, 0x203E}, {0x2074, 0x2074}, 1166 {0x207F, 0x207F}, {0x2081, 0x2084}, {0x20AC, 0x20AC}, 1167 {0x2103, 0x2103}, {0x2105, 0x2105}, {0x2109, 0x2109}, 1168 {0x2113, 0x2113}, {0x2116, 0x2116}, {0x2121, 0x2122}, 1169 {0x2126, 0x2126}, {0x212B, 0x212B}, {0x2153, 0x2154}, 1170 {0x215B, 0x215E}, {0x2160, 0x216B}, {0x2170, 0x2179}, 1171 {0x2190, 0x2199}, {0x21B8, 0x21B9}, {0x21D2, 0x21D2}, 1172 {0x21D4, 0x21D4}, {0x21E7, 0x21E7}, {0x2200, 0x2200}, 1173 {0x2202, 0x2203}, {0x2207, 0x2208}, {0x220B, 0x220B}, 1174 {0x220F, 0x220F}, {0x2211, 0x2211}, {0x2215, 0x2215}, 1175 {0x221A, 0x221A}, {0x221D, 0x2220}, {0x2223, 0x2223}, 1176 {0x2225, 0x2225}, {0x2227, 0x222C}, {0x222E, 0x222E}, 1177 {0x2234, 0x2237}, {0x223C, 0x223D}, {0x2248, 0x2248}, 1178 {0x224C, 0x224C}, {0x2252, 0x2252}, {0x2260, 0x2261}, 1179 {0x2264, 0x2267}, {0x226A, 0x226B}, {0x226E, 0x226F}, 1180 {0x2282, 0x2283}, {0x2286, 0x2287}, {0x2295, 0x2295}, 1181 {0x2299, 0x2299}, {0x22A5, 0x22A5}, {0x22BF, 0x22BF}, 1182 {0x2312, 0x2312}, {0x2460, 0x24E9}, {0x24EB, 0x254B}, 1183 {0x2550, 0x2573}, {0x2580, 0x258F}, {0x2592, 0x2595}, 1184 {0x25A0, 0x25A1}, {0x25A3, 0x25A9}, {0x25B2, 0x25B3}, 1185 {0x25B6, 0x25B7}, {0x25BC, 0x25BD}, {0x25C0, 0x25C1}, 1186 {0x25C6, 0x25C8}, {0x25CB, 0x25CB}, {0x25CE, 0x25D1}, 1187 {0x25E2, 0x25E5}, {0x25EF, 0x25EF}, {0x2605, 0x2606}, 1188 {0x2609, 0x2609}, {0x260E, 0x260F}, {0x2614, 0x2615}, 1189 {0x261C, 0x261C}, {0x261E, 0x261E}, {0x2640, 0x2640}, 1190 {0x2642, 0x2642}, {0x2660, 0x2661}, {0x2663, 0x2665}, 1191 {0x2667, 0x266A}, {0x266C, 0x266D}, {0x266F, 0x266F}, 1192 {0x273D, 0x273D}, {0x2776, 0x277F}, {0xE000, 0xF8FF}, 1193 {0xFFFD, 0xFFFD}, /* {0xF0000, 0xFFFFD}, {0x100000, 0x10FFFD} */ 1194 }; 1195 1196 if (c >= 0x100) 1197 { 1198 #ifdef USE_WCHAR_FUNCTIONS 1199 /* 1200 * Assume the library function wcwidth() works better than our own 1201 * stuff. It should return 1 for ambiguous width chars! 1202 */ 1203 int n = wcwidth(c); 1204 1205 if (n < 0) 1206 return 6; /* unprintable, displays <xxxx> */ 1207 if (n > 1) 1208 return n; 1209 #else 1210 if (!utf_printable(c)) 1211 return 6; /* unprintable, displays <xxxx> */ 1212 if (c >= 0x1100 1213 && (c <= 0x115f /* Hangul Jamo */ 1214 || c == 0x2329 1215 || c == 0x232a 1216 || (c >= 0x2e80 && c <= 0xa4cf 1217 && c != 0x303f) /* CJK ... Yi */ 1218 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */ 1219 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility 1220 Ideographs */ 1221 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */ 1222 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */ 1223 || (c >= 0xffe0 && c <= 0xffe6) 1224 || (c >= 0x20000 && c <= 0x2fffd) 1225 || (c >= 0x30000 && c <= 0x3fffd))) 1226 return 2; 1227 #endif 1228 } 1229 1230 /* Characters below 0x100 are influenced by 'isprint' option */ 1231 else if (c >= 0x80 && !vim_isprintc(c)) 1232 return 4; /* unprintable, displays <xx> */ 1233 1234 if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c)) 1235 return 2; 1236 1237 return 1; 1238 } 1239 1240 /* 1241 * mb_ptr2cells() function pointer. 1242 * Return the number of display cells character at "*p" occupies. 1243 * This doesn't take care of unprintable characters, use ptr2cells() for that. 1244 */ 1245 /*ARGSUSED*/ 1246 int 1247 latin_ptr2cells(p) 1248 char_u *p; 1249 { 1250 return 1; 1251 } 1252 1253 int 1254 utf_ptr2cells(p) 1255 char_u *p; 1256 { 1257 int c; 1258 1259 /* Need to convert to a wide character. */ 1260 if (*p >= 0x80) 1261 { 1262 c = utf_ptr2char(p); 1263 /* An illegal byte is displayed as <xx>. */ 1264 if (utf_ptr2len(p) == 1 || c == NUL) 1265 return 4; 1266 /* If the char is ASCII it must be an overlong sequence. */ 1267 if (c < 0x80) 1268 return char2cells(c); 1269 return utf_char2cells(c); 1270 } 1271 return 1; 1272 } 1273 1274 int 1275 dbcs_ptr2cells(p) 1276 char_u *p; 1277 { 1278 /* Number of cells is equal to number of bytes, except for euc-jp when 1279 * the first byte is 0x8e. */ 1280 if (enc_dbcs == DBCS_JPNU && *p == 0x8e) 1281 return 1; 1282 return MB_BYTE2LEN(*p); 1283 } 1284 1285 /* 1286 * mb_char2cells() function pointer. 1287 * Return the number of display cells character "c" occupies. 1288 * Only takes care of multi-byte chars, not "^C" and such. 1289 */ 1290 /*ARGSUSED*/ 1291 int 1292 latin_char2cells(c) 1293 int c; 1294 { 1295 return 1; 1296 } 1297 1298 static int 1299 dbcs_char2cells(c) 1300 int c; 1301 { 1302 /* Number of cells is equal to number of bytes, except for euc-jp when 1303 * the first byte is 0x8e. */ 1304 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) 1305 return 1; 1306 /* use the first byte */ 1307 return MB_BYTE2LEN((unsigned)c >> 8); 1308 } 1309 1310 /* 1311 * mb_off2cells() function pointer. 1312 * Return number of display cells for char at ScreenLines[off]. 1313 * Caller must make sure "off" and "off + 1" are valid! 1314 */ 1315 /*ARGSUSED*/ 1316 int 1317 latin_off2cells(off) 1318 unsigned off; 1319 { 1320 return 1; 1321 } 1322 1323 int 1324 dbcs_off2cells(off) 1325 unsigned off; 1326 { 1327 /* Number of cells is equal to number of bytes, except for euc-jp when 1328 * the first byte is 0x8e. */ 1329 if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e) 1330 return 1; 1331 return MB_BYTE2LEN(ScreenLines[off]); 1332 } 1333 1334 int 1335 utf_off2cells(off) 1336 unsigned off; 1337 { 1338 return ScreenLines[off + 1] == 0 ? 2 : 1; 1339 } 1340 1341 /* 1342 * mb_ptr2char() function pointer. 1343 * Convert a byte sequence into a character. 1344 */ 1345 int 1346 latin_ptr2char(p) 1347 char_u *p; 1348 { 1349 return *p; 1350 } 1351 1352 static int 1353 dbcs_ptr2char(p) 1354 char_u *p; 1355 { 1356 if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL) 1357 return (p[0] << 8) + p[1]; 1358 return *p; 1359 } 1360 1361 /* 1362 * Convert a UTF-8 byte sequence to a wide character. 1363 * If the sequence is illegal or truncated by a NUL the first byte is 1364 * returned. 1365 * Does not include composing characters, of course. 1366 */ 1367 int 1368 utf_ptr2char(p) 1369 char_u *p; 1370 { 1371 int len; 1372 1373 if (p[0] < 0x80) /* be quick for ASCII */ 1374 return p[0]; 1375 1376 len = utf8len_tab[p[0]]; 1377 if ((p[1] & 0xc0) == 0x80) 1378 { 1379 if (len == 2) 1380 return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f); 1381 if ((p[2] & 0xc0) == 0x80) 1382 { 1383 if (len == 3) 1384 return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6) 1385 + (p[2] & 0x3f); 1386 if ((p[3] & 0xc0) == 0x80) 1387 { 1388 if (len == 4) 1389 return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12) 1390 + ((p[2] & 0x3f) << 6) + (p[3] & 0x3f); 1391 if ((p[4] & 0xc0) == 0x80) 1392 { 1393 if (len == 5) 1394 return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18) 1395 + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6) 1396 + (p[4] & 0x3f); 1397 if ((p[5] & 0xc0) == 0x80 && len == 6) 1398 return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24) 1399 + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12) 1400 + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f); 1401 } 1402 } 1403 } 1404 } 1405 /* Illegal value, just return the first byte */ 1406 return p[0]; 1407 } 1408 1409 /* 1410 * Get character at **pp and advance *pp to the next character. 1411 * Note: composing characters are skipped! 1412 */ 1413 int 1414 mb_ptr2char_adv(pp) 1415 char_u **pp; 1416 { 1417 int c; 1418 1419 c = (*mb_ptr2char)(*pp); 1420 *pp += (*mb_ptr2len)(*pp); 1421 return c; 1422 } 1423 1424 /* 1425 * Get character at **pp and advance *pp to the next character. 1426 * Note: composing characters are returned as separate characters. 1427 */ 1428 int 1429 mb_cptr2char_adv(pp) 1430 char_u **pp; 1431 { 1432 int c; 1433 1434 c = (*mb_ptr2char)(*pp); 1435 if (enc_utf8) 1436 *pp += utf_ptr2len(*pp); 1437 else 1438 *pp += (*mb_ptr2len)(*pp); 1439 return c; 1440 } 1441 1442 #if defined(FEAT_ARABIC) || defined(PROTO) 1443 /* 1444 * Check whether we are dealing with Arabic combining characters. 1445 * Note: these are NOT really composing characters! 1446 */ 1447 int 1448 arabic_combine(one, two) 1449 int one; /* first character */ 1450 int two; /* character just after "one" */ 1451 { 1452 if (one == a_LAM) 1453 return arabic_maycombine(two); 1454 return FALSE; 1455 } 1456 1457 /* 1458 * Check whether we are dealing with a character that could be regarded as an 1459 * Arabic combining character, need to check the character before this. 1460 */ 1461 int 1462 arabic_maycombine(two) 1463 int two; 1464 { 1465 if (p_arshape && !p_tbidi) 1466 return (two == a_ALEF_MADDA 1467 || two == a_ALEF_HAMZA_ABOVE 1468 || two == a_ALEF_HAMZA_BELOW 1469 || two == a_ALEF); 1470 return FALSE; 1471 } 1472 1473 /* 1474 * Check if the character pointed to by "p2" is a composing character when it 1475 * comes after "p1". For Arabic sometimes "ab" is replaced with "c", which 1476 * behaves like a composing character. 1477 */ 1478 int 1479 utf_composinglike(p1, p2) 1480 char_u *p1; 1481 char_u *p2; 1482 { 1483 int c2; 1484 1485 c2 = utf_ptr2char(p2); 1486 if (utf_iscomposing(c2)) 1487 return TRUE; 1488 if (!arabic_maycombine(c2)) 1489 return FALSE; 1490 return arabic_combine(utf_ptr2char(p1), c2); 1491 } 1492 #endif 1493 1494 /* 1495 * Convert a UTF-8 byte string to a wide chararacter. Also get up to MAX_MCO 1496 * composing characters. 1497 */ 1498 int 1499 utfc_ptr2char(p, pcc) 1500 char_u *p; 1501 int *pcc; /* return: composing chars, last one is 0 */ 1502 { 1503 int len; 1504 int c; 1505 int cc; 1506 int i = 0; 1507 1508 c = utf_ptr2char(p); 1509 len = utf_ptr2len(p); 1510 1511 /* Only accept a composing char when the first char isn't illegal. */ 1512 if ((len > 1 || *p < 0x80) 1513 && p[len] >= 0x80 1514 && UTF_COMPOSINGLIKE(p, p + len)) 1515 { 1516 cc = utf_ptr2char(p + len); 1517 for (;;) 1518 { 1519 pcc[i++] = cc; 1520 if (i == MAX_MCO) 1521 break; 1522 len += utf_ptr2len(p + len); 1523 if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len))) 1524 break; 1525 } 1526 } 1527 1528 if (i < MAX_MCO) /* last composing char must be 0 */ 1529 pcc[i] = 0; 1530 1531 return c; 1532 } 1533 1534 /* 1535 * Convert a UTF-8 byte string to a wide chararacter. Also get up to MAX_MCO 1536 * composing characters. Use no more than p[maxlen]. 1537 */ 1538 int 1539 utfc_ptr2char_len(p, pcc, maxlen) 1540 char_u *p; 1541 int *pcc; /* return: composing chars, last one is 0 */ 1542 int maxlen; 1543 { 1544 int len; 1545 int c; 1546 int cc; 1547 int i = 0; 1548 1549 c = utf_ptr2char(p); 1550 len = utf_ptr2len_len(p, maxlen); 1551 /* Only accept a composing char when the first char isn't illegal. */ 1552 if ((len > 1 || *p < 0x80) 1553 && len < maxlen 1554 && p[len] >= 0x80 1555 && UTF_COMPOSINGLIKE(p, p + len)) 1556 { 1557 cc = utf_ptr2char(p + len); 1558 for (;;) 1559 { 1560 pcc[i++] = cc; 1561 if (i == MAX_MCO) 1562 break; 1563 len += utf_ptr2len_len(p + len, maxlen - len); 1564 if (len >= maxlen 1565 || p[len] < 0x80 1566 || !utf_iscomposing(cc = utf_ptr2char(p + len))) 1567 break; 1568 } 1569 } 1570 1571 if (i < MAX_MCO) /* last composing char must be 0 */ 1572 pcc[i] = 0; 1573 1574 return c; 1575 } 1576 1577 /* 1578 * Convert the character at screen position "off" to a sequence of bytes. 1579 * Includes the composing characters. 1580 * "buf" must at least have the length MB_MAXBYTES. 1581 * Returns the produced number of bytes. 1582 */ 1583 int 1584 utfc_char2bytes(off, buf) 1585 int off; 1586 char_u *buf; 1587 { 1588 int len; 1589 int i; 1590 1591 len = utf_char2bytes(ScreenLinesUC[off], buf); 1592 for (i = 0; i < Screen_mco; ++i) 1593 { 1594 if (ScreenLinesC[i][off] == 0) 1595 break; 1596 len += utf_char2bytes(ScreenLinesC[i][off], buf + len); 1597 } 1598 return len; 1599 } 1600 1601 /* 1602 * Get the length of a UTF-8 byte sequence, not including any following 1603 * composing characters. 1604 * Returns 0 for "". 1605 * Returns 1 for an illegal byte sequence. 1606 */ 1607 int 1608 utf_ptr2len(p) 1609 char_u *p; 1610 { 1611 int len; 1612 int i; 1613 1614 if (*p == NUL) 1615 return 0; 1616 len = utf8len_tab[*p]; 1617 for (i = 1; i < len; ++i) 1618 if ((p[i] & 0xc0) != 0x80) 1619 return 1; 1620 return len; 1621 } 1622 1623 /* 1624 * Return length of UTF-8 character, obtained from the first byte. 1625 * "b" must be between 0 and 255! 1626 */ 1627 int 1628 utf_byte2len(b) 1629 int b; 1630 { 1631 return utf8len_tab[b]; 1632 } 1633 1634 /* 1635 * Get the length of UTF-8 byte sequence "p[size]". Does not include any 1636 * following composing characters. 1637 * Returns 1 for "". 1638 * Returns 1 for an illegal byte sequence. 1639 * Returns number > "size" for an incomplete byte sequence. 1640 */ 1641 int 1642 utf_ptr2len_len(p, size) 1643 char_u *p; 1644 int size; 1645 { 1646 int len; 1647 int i; 1648 1649 if (*p == NUL) 1650 return 1; 1651 len = utf8len_tab[*p]; 1652 if (len > size) 1653 return len; /* incomplete byte sequence. */ 1654 for (i = 1; i < len; ++i) 1655 if ((p[i] & 0xc0) != 0x80) 1656 return 1; 1657 return len; 1658 } 1659 1660 /* 1661 * Return the number of bytes the UTF-8 encoding of the character at "p" takes. 1662 * This includes following composing characters. 1663 */ 1664 int 1665 utfc_ptr2len(p) 1666 char_u *p; 1667 { 1668 int len; 1669 int b0 = *p; 1670 #ifdef FEAT_ARABIC 1671 int prevlen; 1672 #endif 1673 1674 if (b0 == NUL) 1675 return 0; 1676 if (b0 < 0x80 && p[1] < 0x80) /* be quick for ASCII */ 1677 return 1; 1678 1679 /* Skip over first UTF-8 char, stopping at a NUL byte. */ 1680 len = utf_ptr2len(p); 1681 1682 /* Check for illegal byte. */ 1683 if (len == 1 && b0 >= 0x80) 1684 return 1; 1685 1686 /* 1687 * Check for composing characters. We can handle only the first two, but 1688 * skip all of them (otherwise the cursor would get stuck). 1689 */ 1690 #ifdef FEAT_ARABIC 1691 prevlen = 0; 1692 #endif 1693 for (;;) 1694 { 1695 if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len)) 1696 return len; 1697 1698 /* Skip over composing char */ 1699 #ifdef FEAT_ARABIC 1700 prevlen = len; 1701 #endif 1702 len += utf_ptr2len(p + len); 1703 } 1704 } 1705 1706 /* 1707 * Return the number of bytes the UTF-8 encoding of the character at "p[size]" 1708 * takes. This includes following composing characters. 1709 * Returns 1 for an illegal char or an incomplete byte sequence. 1710 */ 1711 int 1712 utfc_ptr2len_len(p, size) 1713 char_u *p; 1714 int size; 1715 { 1716 int len; 1717 #ifdef FEAT_ARABIC 1718 int prevlen; 1719 #endif 1720 1721 if (*p == NUL) 1722 return 0; 1723 if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) /* be quick for ASCII */ 1724 return 1; 1725 1726 /* Skip over first UTF-8 char, stopping at a NUL byte. */ 1727 len = utf_ptr2len_len(p, size); 1728 1729 /* Check for illegal byte and incomplete byte sequence. */ 1730 if ((len == 1 && p[0] >= 0x80) || len > size) 1731 return 1; 1732 1733 /* 1734 * Check for composing characters. We can handle only the first two, but 1735 * skip all of them (otherwise the cursor would get stuck). 1736 */ 1737 #ifdef FEAT_ARABIC 1738 prevlen = 0; 1739 #endif 1740 while (len < size) 1741 { 1742 if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len)) 1743 break; 1744 1745 /* Skip over composing char */ 1746 #ifdef FEAT_ARABIC 1747 prevlen = len; 1748 #endif 1749 len += utf_ptr2len_len(p + len, size - len); 1750 } 1751 return len; 1752 } 1753 1754 /* 1755 * Return the number of bytes the UTF-8 encoding of character "c" takes. 1756 * This does not include composing characters. 1757 */ 1758 int 1759 utf_char2len(c) 1760 int c; 1761 { 1762 if (c < 0x80) 1763 return 1; 1764 if (c < 0x800) 1765 return 2; 1766 if (c < 0x10000) 1767 return 3; 1768 if (c < 0x200000) 1769 return 4; 1770 if (c < 0x4000000) 1771 return 5; 1772 return 6; 1773 } 1774 1775 /* 1776 * Convert Unicode character "c" to UTF-8 string in "buf[]". 1777 * Returns the number of bytes. 1778 * This does not include composing characters. 1779 */ 1780 int 1781 utf_char2bytes(c, buf) 1782 int c; 1783 char_u *buf; 1784 { 1785 if (c < 0x80) /* 7 bits */ 1786 { 1787 buf[0] = c; 1788 return 1; 1789 } 1790 if (c < 0x800) /* 11 bits */ 1791 { 1792 buf[0] = 0xc0 + ((unsigned)c >> 6); 1793 buf[1] = 0x80 + (c & 0x3f); 1794 return 2; 1795 } 1796 if (c < 0x10000) /* 16 bits */ 1797 { 1798 buf[0] = 0xe0 + ((unsigned)c >> 12); 1799 buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f); 1800 buf[2] = 0x80 + (c & 0x3f); 1801 return 3; 1802 } 1803 if (c < 0x200000) /* 21 bits */ 1804 { 1805 buf[0] = 0xf0 + ((unsigned)c >> 18); 1806 buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f); 1807 buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f); 1808 buf[3] = 0x80 + (c & 0x3f); 1809 return 4; 1810 } 1811 if (c < 0x4000000) /* 26 bits */ 1812 { 1813 buf[0] = 0xf8 + ((unsigned)c >> 24); 1814 buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f); 1815 buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f); 1816 buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f); 1817 buf[4] = 0x80 + (c & 0x3f); 1818 return 5; 1819 } 1820 /* 31 bits */ 1821 buf[0] = 0xfc + ((unsigned)c >> 30); 1822 buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f); 1823 buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f); 1824 buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f); 1825 buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f); 1826 buf[5] = 0x80 + (c & 0x3f); 1827 return 6; 1828 } 1829 1830 /* 1831 * Return TRUE if "c" is a composing UTF-8 character. This means it will be 1832 * drawn on top of the preceding character. 1833 * Based on code from Markus Kuhn. 1834 */ 1835 int 1836 utf_iscomposing(c) 1837 int c; 1838 { 1839 /* sorted list of non-overlapping intervals */ 1840 static struct interval combining[] = 1841 { 1842 {0x0300, 0x034f}, {0x0360, 0x036f}, {0x0483, 0x0486}, {0x0488, 0x0489}, 1843 {0x0591, 0x05a1}, {0x05a3, 0x05b9}, {0x05bb, 0x05bd}, {0x05bf, 0x05bf}, 1844 {0x05c1, 0x05c2}, {0x05c4, 0x05c4}, {0x0610, 0x0615}, {0x064b, 0x0658}, 1845 {0x0670, 0x0670}, {0x06d6, 0x06dc}, {0x06de, 0x06e4}, {0x06e7, 0x06e8}, 1846 {0x06ea, 0x06ed}, {0x0711, 0x0711}, {0x0730, 0x074a}, {0x07a6, 0x07b0}, 1847 {0x0901, 0x0903}, {0x093c, 0x093c}, {0x093e, 0x094d}, {0x0951, 0x0954}, 1848 {0x0962, 0x0963}, {0x0981, 0x0983}, {0x09bc, 0x09bc}, {0x09be, 0x09c4}, 1849 {0x09c7, 0x09c8}, {0x09cb, 0x09cd}, {0x09d7, 0x09d7}, {0x09e2, 0x09e3}, 1850 {0x0a01, 0x0a03}, {0x0a3c, 0x0a3c}, {0x0a3e, 0x0a42}, {0x0a47, 0x0a48}, 1851 {0x0a4b, 0x0a4d}, {0x0a70, 0x0a71}, {0x0a81, 0x0a83}, {0x0abc, 0x0abc}, 1852 {0x0abe, 0x0ac5}, {0x0ac7, 0x0ac9}, {0x0acb, 0x0acd}, {0x0ae2, 0x0ae3}, 1853 {0x0b01, 0x0b03}, {0x0b3c, 0x0b3c}, {0x0b3e, 0x0b43}, {0x0b47, 0x0b48}, 1854 {0x0b4b, 0x0b4d}, {0x0b56, 0x0b57}, {0x0b82, 0x0b82}, {0x0bbe, 0x0bc2}, 1855 {0x0bc6, 0x0bc8}, {0x0bca, 0x0bcd}, {0x0bd7, 0x0bd7}, {0x0c01, 0x0c03}, 1856 {0x0c3e, 0x0c44}, {0x0c46, 0x0c48}, {0x0c4a, 0x0c4d}, {0x0c55, 0x0c56}, 1857 {0x0c82, 0x0c83}, {0x0cbc, 0x0cbc}, {0x0cbe, 0x0cc4}, {0x0cc6, 0x0cc8}, 1858 {0x0cca, 0x0ccd}, {0x0cd5, 0x0cd6}, {0x0d02, 0x0d03}, {0x0d3e, 0x0d43}, 1859 {0x0d46, 0x0d48}, {0x0d4a, 0x0d4d}, {0x0d57, 0x0d57}, {0x0d82, 0x0d83}, 1860 {0x0dca, 0x0dca}, {0x0dcf, 0x0dd4}, {0x0dd6, 0x0dd6}, {0x0dd8, 0x0ddf}, 1861 {0x0df2, 0x0df3}, {0x0e31, 0x0e31}, {0x0e34, 0x0e3a}, {0x0e47, 0x0e4e}, 1862 {0x0eb1, 0x0eb1}, {0x0eb4, 0x0eb9}, {0x0ebb, 0x0ebc}, {0x0ec8, 0x0ecd}, 1863 {0x0f18, 0x0f19}, {0x0f35, 0x0f35}, {0x0f37, 0x0f37}, {0x0f39, 0x0f39}, 1864 {0x0f3e, 0x0f3f}, {0x0f71, 0x0f84}, {0x0f86, 0x0f87}, {0x0f90, 0x0f97}, 1865 {0x0f99, 0x0fbc}, {0x0fc6, 0x0fc6}, {0x102c, 0x1032}, {0x1036, 0x1039}, 1866 {0x1056, 0x1059}, {0x1712, 0x1714}, {0x1732, 0x1734}, {0x1752, 0x1753}, 1867 {0x1772, 0x1773}, {0x17b6, 0x17d3}, {0x17dd, 0x17dd}, {0x180b, 0x180d}, 1868 {0x18a9, 0x18a9}, {0x1920, 0x192b}, {0x1930, 0x193b}, {0x20d0, 0x20ea}, 1869 {0x302a, 0x302f}, {0x3099, 0x309a}, {0xfb1e, 0xfb1e}, {0xfe00, 0xfe0f}, 1870 {0xfe20, 0xfe23}, 1871 }; 1872 1873 return intable(combining, sizeof(combining), c); 1874 } 1875 1876 /* 1877 * Return TRUE for characters that can be displayed in a normal way. 1878 * Only for characters of 0x100 and above! 1879 */ 1880 int 1881 utf_printable(c) 1882 int c; 1883 { 1884 #ifdef USE_WCHAR_FUNCTIONS 1885 /* 1886 * Assume the iswprint() library function works better than our own stuff. 1887 */ 1888 return iswprint(c); 1889 #else 1890 /* Sorted list of non-overlapping intervals. 1891 * 0xd800-0xdfff is reserved for UTF-16, actually illegal. */ 1892 static struct interval nonprint[] = 1893 { 1894 {0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e}, 1895 {0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb}, 1896 {0xfffe, 0xffff} 1897 }; 1898 1899 return !intable(nonprint, sizeof(nonprint), c); 1900 #endif 1901 } 1902 1903 /* 1904 * Get class of a Unicode character. 1905 * 0: white space 1906 * 1: punctuation 1907 * 2 or bigger: some class of word character. 1908 */ 1909 int 1910 utf_class(c) 1911 int c; 1912 { 1913 /* sorted list of non-overlapping intervals */ 1914 static struct clinterval 1915 { 1916 unsigned short first; 1917 unsigned short last; 1918 unsigned short class; 1919 } classes[] = 1920 { 1921 {0x037e, 0x037e, 1}, /* Greek question mark */ 1922 {0x0387, 0x0387, 1}, /* Greek ano teleia */ 1923 {0x055a, 0x055f, 1}, /* Armenian punctuation */ 1924 {0x0589, 0x0589, 1}, /* Armenian full stop */ 1925 {0x05be, 0x05be, 1}, 1926 {0x05c0, 0x05c0, 1}, 1927 {0x05c3, 0x05c3, 1}, 1928 {0x05f3, 0x05f4, 1}, 1929 {0x060c, 0x060c, 1}, 1930 {0x061b, 0x061b, 1}, 1931 {0x061f, 0x061f, 1}, 1932 {0x066a, 0x066d, 1}, 1933 {0x06d4, 0x06d4, 1}, 1934 {0x0700, 0x070d, 1}, /* Syriac punctuation */ 1935 {0x0964, 0x0965, 1}, 1936 {0x0970, 0x0970, 1}, 1937 {0x0df4, 0x0df4, 1}, 1938 {0x0e4f, 0x0e4f, 1}, 1939 {0x0e5a, 0x0e5b, 1}, 1940 {0x0f04, 0x0f12, 1}, 1941 {0x0f3a, 0x0f3d, 1}, 1942 {0x0f85, 0x0f85, 1}, 1943 {0x104a, 0x104f, 1}, /* Myanmar punctuation */ 1944 {0x10fb, 0x10fb, 1}, /* Georgian punctuation */ 1945 {0x1361, 0x1368, 1}, /* Ethiopic punctuation */ 1946 {0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */ 1947 {0x1680, 0x1680, 0}, 1948 {0x169b, 0x169c, 1}, 1949 {0x16eb, 0x16ed, 1}, 1950 {0x1735, 0x1736, 1}, 1951 {0x17d4, 0x17dc, 1}, /* Khmer punctuation */ 1952 {0x1800, 0x180a, 1}, /* Mongolian punctuation */ 1953 {0x2000, 0x200b, 0}, /* spaces */ 1954 {0x200c, 0x2027, 1}, /* punctuation and symbols */ 1955 {0x2028, 0x2029, 0}, 1956 {0x202a, 0x202e, 1}, /* punctuation and symbols */ 1957 {0x202f, 0x202f, 0}, 1958 {0x2030, 0x205e, 1}, /* punctuation and symbols */ 1959 {0x205f, 0x205f, 0}, 1960 {0x2060, 0x27ff, 1}, /* punctuation and symbols */ 1961 {0x2070, 0x207f, 0x2070}, /* superscript */ 1962 {0x2080, 0x208f, 0x2080}, /* subscript */ 1963 {0x2983, 0x2998, 1}, 1964 {0x29d8, 0x29db, 1}, 1965 {0x29fc, 0x29fd, 1}, 1966 {0x3000, 0x3000, 0}, /* ideographic space */ 1967 {0x3001, 0x3020, 1}, /* ideographic punctuation */ 1968 {0x3030, 0x3030, 1}, 1969 {0x303d, 0x303d, 1}, 1970 {0x3040, 0x309f, 0x3040}, /* Hiragana */ 1971 {0x30a0, 0x30ff, 0x30a0}, /* Katakana */ 1972 {0x3300, 0x9fff, 0x4e00}, /* CJK Ideographs */ 1973 {0xac00, 0xd7a3, 0xac00}, /* Hangul Syllables */ 1974 {0xf900, 0xfaff, 0x4e00}, /* CJK Ideographs */ 1975 {0xfd3e, 0xfd3f, 1}, 1976 {0xfe30, 0xfe6b, 1}, /* punctuation forms */ 1977 {0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */ 1978 {0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */ 1979 {0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */ 1980 {0xff5b, 0xff65, 1}, /* half/fullwidth ASCII */ 1981 }; 1982 int bot = 0; 1983 int top = sizeof(classes) / sizeof(struct clinterval) - 1; 1984 int mid; 1985 1986 /* First quick check for Latin1 characters, use 'iskeyword'. */ 1987 if (c < 0x100) 1988 { 1989 if (c == ' ' || c == '\t' || c == NUL || c == 0xa0) 1990 return 0; /* blank */ 1991 if (vim_iswordc(c)) 1992 return 2; /* word character */ 1993 return 1; /* punctuation */ 1994 } 1995 1996 /* binary search in table */ 1997 while (top >= bot) 1998 { 1999 mid = (bot + top) / 2; 2000 if (classes[mid].last < c) 2001 bot = mid + 1; 2002 else if (classes[mid].first > c) 2003 top = mid - 1; 2004 else 2005 return (int)classes[mid].class; 2006 } 2007 2008 /* most other characters are "word" characters */ 2009 return 2; 2010 } 2011 2012 /* 2013 * Code for Unicode case-dependent operations. Based on notes in 2014 * http://www.unicode.org/Public/UNIDATA/CaseFolding.txt 2015 * This code uses simple case folding, not full case folding. 2016 */ 2017 2018 /* 2019 * The following table is built by foldExtract.pl < CaseFolding.txt . 2020 * It must be in numeric order, because we use binary search on it. 2021 * An entry such as {0x41,0x5a,1,32} means that UCS-4 characters in the range 2022 * from 0x41 to 0x5a inclusive, stepping by 1, are folded by adding 32. 2023 */ 2024 2025 typedef struct 2026 { 2027 int rangeStart; 2028 int rangeEnd; 2029 int step; 2030 int offset; 2031 } convertStruct; 2032 2033 static convertStruct foldCase[] = 2034 { 2035 {0x41,0x5a,1,32}, {0xc0,0xd6,1,32}, {0xd8,0xde,1,32}, 2036 {0x100,0x12e,2,1}, {0x130,0x130,-1,-199}, {0x132,0x136,2,1}, 2037 {0x139,0x147,2,1}, {0x14a,0x176,2,1}, {0x178,0x178,-1,-121}, 2038 {0x179,0x17d,2,1}, {0x181,0x181,-1,210}, {0x182,0x184,2,1}, 2039 {0x186,0x186,-1,206}, {0x187,0x187,-1,1}, {0x189,0x18a,1,205}, 2040 {0x18b,0x18b,-1,1}, {0x18e,0x18e,-1,79}, {0x18f,0x18f,-1,202}, 2041 {0x190,0x190,-1,203}, {0x191,0x191,-1,1}, {0x193,0x193,-1,205}, 2042 {0x194,0x194,-1,207}, {0x196,0x196,-1,211}, {0x197,0x197,-1,209}, 2043 {0x198,0x198,-1,1}, {0x19c,0x19c,-1,211}, {0x19d,0x19d,-1,213}, 2044 {0x19f,0x19f,-1,214}, {0x1a0,0x1a4,2,1}, {0x1a6,0x1a6,-1,218}, 2045 {0x1a7,0x1a7,-1,1}, {0x1a9,0x1a9,-1,218}, {0x1ac,0x1ac,-1,1}, 2046 {0x1ae,0x1ae,-1,218}, {0x1af,0x1af,-1,1}, {0x1b1,0x1b2,1,217}, 2047 {0x1b3,0x1b5,2,1}, {0x1b7,0x1b7,-1,219}, {0x1b8,0x1bc,4,1}, 2048 {0x1c4,0x1c4,-1,2}, {0x1c5,0x1c5,-1,1}, {0x1c7,0x1c7,-1,2}, 2049 {0x1c8,0x1c8,-1,1}, {0x1ca,0x1ca,-1,2}, {0x1cb,0x1db,2,1}, 2050 {0x1de,0x1ee,2,1}, {0x1f1,0x1f1,-1,2}, {0x1f2,0x1f4,2,1}, 2051 {0x1f6,0x1f6,-1,-97}, {0x1f7,0x1f7,-1,-56}, {0x1f8,0x21e,2,1}, 2052 {0x220,0x220,-1,-130}, {0x222,0x232,2,1}, {0x386,0x386,-1,38}, 2053 {0x388,0x38a,1,37}, {0x38c,0x38c,-1,64}, {0x38e,0x38f,1,63}, 2054 {0x391,0x3a1,1,32}, {0x3a3,0x3ab,1,32}, {0x3d8,0x3ee,2,1}, 2055 {0x3f4,0x3f4,-1,-60}, {0x3f7,0x3f7,-1,1}, {0x3f9,0x3f9,-1,-7}, 2056 {0x3fa,0x3fa,-1,1}, {0x400,0x40f,1,80}, {0x410,0x42f,1,32}, 2057 {0x460,0x480,2,1}, {0x48a,0x4be,2,1}, {0x4c1,0x4cd,2,1}, 2058 {0x4d0,0x4f4,2,1}, {0x4f8,0x500,8,1}, {0x502,0x50e,2,1}, 2059 {0x531,0x556,1,48}, {0x1e00,0x1e94,2,1}, {0x1ea0,0x1ef8,2,1}, 2060 {0x1f08,0x1f0f,1,-8}, {0x1f18,0x1f1d,1,-8}, {0x1f28,0x1f2f,1,-8}, 2061 {0x1f38,0x1f3f,1,-8}, {0x1f48,0x1f4d,1,-8}, {0x1f59,0x1f5f,2,-8}, 2062 {0x1f68,0x1f6f,1,-8}, {0x1f88,0x1f8f,1,-8}, {0x1f98,0x1f9f,1,-8}, 2063 {0x1fa8,0x1faf,1,-8}, {0x1fb8,0x1fb9,1,-8}, {0x1fba,0x1fbb,1,-74}, 2064 {0x1fbc,0x1fbc,-1,-9}, {0x1fc8,0x1fcb,1,-86}, {0x1fcc,0x1fcc,-1,-9}, 2065 {0x1fd8,0x1fd9,1,-8}, {0x1fda,0x1fdb,1,-100}, {0x1fe8,0x1fe9,1,-8}, 2066 {0x1fea,0x1feb,1,-112}, {0x1fec,0x1fec,-1,-7}, {0x1ff8,0x1ff9,1,-128}, 2067 {0x1ffa,0x1ffb,1,-126}, {0x1ffc,0x1ffc,-1,-9}, {0x2126,0x2126,-1,-7517}, 2068 {0x212a,0x212a,-1,-8383}, {0x212b,0x212b,-1,-8262}, 2069 {0x2160,0x216f,1,16}, {0x24b6,0x24cf,1,26}, {0xff21,0xff3a,1,32}, 2070 {0x10400,0x10427,1,40} 2071 }; 2072 2073 static int utf_convert(int a, convertStruct table[], int tableSize); 2074 2075 /* 2076 * Generic conversion function for case operations. 2077 * Return the converted equivalent of "a", which is a UCS-4 character. Use 2078 * the given conversion "table". Uses binary search on "table". 2079 */ 2080 static int 2081 utf_convert(a, table, tableSize) 2082 int a; 2083 convertStruct table[]; 2084 int tableSize; 2085 { 2086 int start, mid, end; /* indices into table */ 2087 2088 start = 0; 2089 end = tableSize / sizeof(convertStruct); 2090 while (start < end) 2091 { 2092 /* need to search further */ 2093 mid = (end + start) /2; 2094 if (table[mid].rangeEnd < a) 2095 start = mid + 1; 2096 else 2097 end = mid; 2098 } 2099 if (table[start].rangeStart <= a && a <= table[start].rangeEnd 2100 && (a - table[start].rangeStart) % table[start].step == 0) 2101 return (a + table[start].offset); 2102 else 2103 return a; 2104 } 2105 2106 /* 2107 * Return the folded-case equivalent of "a", which is a UCS-4 character. Uses 2108 * simple case folding. 2109 */ 2110 int 2111 utf_fold(a) 2112 int a; 2113 { 2114 return utf_convert(a, foldCase, sizeof(foldCase)); 2115 } 2116 2117 /* 2118 * The following tables are built by upperLowerExtract.pl < UnicodeData.txt . 2119 * They must be in numeric order, because we use binary search on them. 2120 * An entry such as {0x41,0x5a,1,32} means that UCS-4 characters in the range 2121 * from 0x41 to 0x5a inclusive, stepping by 1, are switched to lower (for 2122 * example) by adding 32. 2123 */ 2124 static convertStruct toLower[] = 2125 { 2126 {0x41,0x5a,1,32}, {0xc0,0xd6,1,32}, {0xd8,0xde,1,32}, 2127 {0x100,0x12e,2,1}, {0x130,0x130,-1,-199}, {0x132,0x136,2,1}, 2128 {0x139,0x147,2,1}, {0x14a,0x176,2,1}, {0x178,0x178,-1,-121}, 2129 {0x179,0x17d,2,1}, {0x181,0x181,-1,210}, {0x182,0x184,2,1}, 2130 {0x186,0x186,-1,206}, {0x187,0x187,-1,1}, {0x189,0x18a,1,205}, 2131 {0x18b,0x18b,-1,1}, {0x18e,0x18e,-1,79}, {0x18f,0x18f,-1,202}, 2132 {0x190,0x190,-1,203}, {0x191,0x191,-1,1}, {0x193,0x193,-1,205}, 2133 {0x194,0x194,-1,207}, {0x196,0x196,-1,211}, {0x197,0x197,-1,209}, 2134 {0x198,0x198,-1,1}, {0x19c,0x19c,-1,211}, {0x19d,0x19d,-1,213}, 2135 {0x19f,0x19f,-1,214}, {0x1a0,0x1a4,2,1}, {0x1a6,0x1a6,-1,218}, 2136 {0x1a7,0x1a7,-1,1}, {0x1a9,0x1a9,-1,218}, {0x1ac,0x1ac,-1,1}, 2137 {0x1ae,0x1ae,-1,218}, {0x1af,0x1af,-1,1}, {0x1b1,0x1b2,1,217}, 2138 {0x1b3,0x1b5,2,1}, {0x1b7,0x1b7,-1,219}, {0x1b8,0x1bc,4,1}, 2139 {0x1c4,0x1ca,3,2}, {0x1cd,0x1db,2,1}, {0x1de,0x1ee,2,1}, 2140 {0x1f1,0x1f1,-1,2}, {0x1f4,0x1f4,-1,1}, {0x1f6,0x1f6,-1,-97}, 2141 {0x1f7,0x1f7,-1,-56}, {0x1f8,0x21e,2,1}, {0x220,0x220,-1,-130}, 2142 {0x222,0x232,2,1}, {0x386,0x386,-1,38}, {0x388,0x38a,1,37}, 2143 {0x38c,0x38c,-1,64}, {0x38e,0x38f,1,63}, {0x391,0x3a1,1,32}, 2144 {0x3a3,0x3ab,1,32}, {0x3d8,0x3ee,2,1}, {0x3f4,0x3f4,-1,-60}, 2145 {0x3f7,0x3f7,-1,1}, {0x3f9,0x3f9,-1,-7}, {0x3fa,0x3fa,-1,1}, 2146 {0x400,0x40f,1,80}, {0x410,0x42f,1,32}, {0x460,0x480,2,1}, 2147 {0x48a,0x4be,2,1}, {0x4c1,0x4cd,2,1}, {0x4d0,0x4f4,2,1}, 2148 {0x4f8,0x500,8,1}, {0x502,0x50e,2,1}, {0x531,0x556,1,48}, 2149 {0x1e00,0x1e94,2,1}, {0x1ea0,0x1ef8,2,1}, {0x1f08,0x1f0f,1,-8}, 2150 {0x1f18,0x1f1d,1,-8}, {0x1f28,0x1f2f,1,-8}, {0x1f38,0x1f3f,1,-8}, 2151 {0x1f48,0x1f4d,1,-8}, {0x1f59,0x1f5f,2,-8}, {0x1f68,0x1f6f,1,-8}, 2152 {0x1fb8,0x1fb9,1,-8}, {0x1fba,0x1fbb,1,-74}, {0x1fc8,0x1fcb,1,-86}, 2153 {0x1fd8,0x1fd9,1,-8}, {0x1fda,0x1fdb,1,-100}, {0x1fe8,0x1fe9,1,-8}, 2154 {0x1fea,0x1feb,1,-112}, {0x1fec,0x1fec,-1,-7}, {0x1ff8,0x1ff9,1,-128}, 2155 {0x1ffa,0x1ffb,1,-126}, {0x2126,0x2126,-1,-7517}, {0x212a,0x212a,-1,-8383}, 2156 {0x212b,0x212b,-1,-8262}, {0xff21,0xff3a,1,32}, {0x10400,0x10427,1,40} 2157 }; 2158 2159 static convertStruct toUpper[] = 2160 { 2161 {0x61,0x7a,1,-32}, {0xb5,0xb5,-1,743}, {0xe0,0xf6,1,-32}, 2162 {0xf8,0xfe,1,-32}, {0xff,0xff,-1,121}, {0x101,0x12f,2,-1}, 2163 {0x131,0x131,-1,-232}, {0x133,0x137,2,-1}, {0x13a,0x148,2,-1}, 2164 {0x14b,0x177,2,-1}, {0x17a,0x17e,2,-1}, {0x17f,0x17f,-1,-300}, 2165 {0x183,0x185,2,-1}, {0x188,0x18c,4,-1}, {0x192,0x192,-1,-1}, 2166 {0x195,0x195,-1,97}, {0x199,0x199,-1,-1}, {0x19e,0x19e,-1,130}, 2167 {0x1a1,0x1a5,2,-1}, {0x1a8,0x1ad,5,-1}, {0x1b0,0x1b4,4,-1}, 2168 {0x1b6,0x1b9,3,-1}, {0x1bd,0x1bd,-1,-1}, {0x1bf,0x1bf,-1,56}, 2169 {0x1c5,0x1c6,1,-1}, {0x1c8,0x1c9,1,-1}, {0x1cb,0x1cc,1,-1}, 2170 {0x1ce,0x1dc,2,-1}, {0x1dd,0x1dd,-1,-79}, {0x1df,0x1ef,2,-1}, 2171 {0x1f2,0x1f3,1,-1}, {0x1f5,0x1f9,4,-1}, {0x1fb,0x21f,2,-1}, 2172 {0x223,0x233,2,-1}, {0x253,0x253,-1,-210}, {0x254,0x254,-1,-206}, 2173 {0x256,0x257,1,-205}, {0x259,0x259,-1,-202}, {0x25b,0x25b,-1,-203}, 2174 {0x260,0x260,-1,-205}, {0x263,0x263,-1,-207}, {0x268,0x268,-1,-209}, 2175 {0x269,0x26f,6,-211}, {0x272,0x272,-1,-213}, {0x275,0x275,-1,-214}, 2176 {0x280,0x283,3,-218}, {0x288,0x288,-1,-218}, {0x28a,0x28b,1,-217}, 2177 {0x292,0x292,-1,-219}, {0x3ac,0x3ac,-1,-38}, {0x3ad,0x3af,1,-37}, 2178 {0x3b1,0x3c1,1,-32}, {0x3c2,0x3c2,-1,-31}, {0x3c3,0x3cb,1,-32}, 2179 {0x3cc,0x3cc,-1,-64}, {0x3cd,0x3ce,1,-63}, {0x3d0,0x3d0,-1,-62}, 2180 {0x3d1,0x3d1,-1,-57}, {0x3d5,0x3d5,-1,-47}, {0x3d6,0x3d6,-1,-54}, 2181 {0x3d9,0x3ef,2,-1}, {0x3f0,0x3f0,-1,-86}, {0x3f1,0x3f1,-1,-80}, 2182 {0x3f2,0x3f2,-1,7}, {0x3f5,0x3f5,-1,-96}, {0x3f8,0x3fb,3,-1}, 2183 {0x430,0x44f,1,-32}, {0x450,0x45f,1,-80}, {0x461,0x481,2,-1}, 2184 {0x48b,0x4bf,2,-1}, {0x4c2,0x4ce,2,-1}, {0x4d1,0x4f5,2,-1}, 2185 {0x4f9,0x501,8,-1}, {0x503,0x50f,2,-1}, {0x561,0x586,1,-48}, 2186 {0x1e01,0x1e95,2,-1}, {0x1e9b,0x1e9b,-1,-59}, {0x1ea1,0x1ef9,2,-1}, 2187 {0x1f00,0x1f07,1,8}, {0x1f10,0x1f15,1,8}, {0x1f20,0x1f27,1,8}, 2188 {0x1f30,0x1f37,1,8}, {0x1f40,0x1f45,1,8}, {0x1f51,0x1f57,2,8}, 2189 {0x1f60,0x1f67,1,8}, {0x1f70,0x1f71,1,74}, {0x1f72,0x1f75,1,86}, 2190 {0x1f76,0x1f77,1,100}, {0x1f78,0x1f79,1,128}, {0x1f7a,0x1f7b,1,112}, 2191 {0x1f7c,0x1f7d,1,126}, {0x1f80,0x1f87,1,8}, {0x1f90,0x1f97,1,8}, 2192 {0x1fa0,0x1fa7,1,8}, {0x1fb0,0x1fb1,1,8}, {0x1fb3,0x1fb3,-1,9}, 2193 {0x1fbe,0x1fbe,-1,-7205}, {0x1fc3,0x1fc3,-1,9}, {0x1fd0,0x1fd1,1,8}, 2194 {0x1fe0,0x1fe1,1,8}, {0x1fe5,0x1fe5,-1,7}, {0x1ff3,0x1ff3,-1,9}, 2195 {0xff41,0xff5a,1,-32}, {0x10428,0x1044f,1,-40} 2196 }; 2197 2198 /* 2199 * Return the upper-case equivalent of "a", which is a UCS-4 character. Use 2200 * simple case folding. 2201 */ 2202 int 2203 utf_toupper(a) 2204 int a; 2205 { 2206 /* If 'casemap' contains "keepascii" use ASCII style toupper(). */ 2207 if (a < 128 && (cmp_flags & CMP_KEEPASCII)) 2208 return TOUPPER_ASC(a); 2209 2210 #if defined(HAVE_TOWUPPER) && defined(__STDC_ISO_10646__) 2211 /* If towupper() is available and handles Unicode, use it. */ 2212 if (!(cmp_flags & CMP_INTERNAL)) 2213 return towupper(a); 2214 #endif 2215 2216 /* For characters below 128 use locale sensitive toupper(). */ 2217 if (a < 128) 2218 return TOUPPER_LOC(a); 2219 2220 /* For any other characters use the above mapping table. */ 2221 return utf_convert(a, toUpper, sizeof(toUpper)); 2222 } 2223 2224 int 2225 utf_islower(a) 2226 int a; 2227 { 2228 return (utf_toupper(a) != a); 2229 } 2230 2231 /* 2232 * Return the lower-case equivalent of "a", which is a UCS-4 character. Use 2233 * simple case folding. 2234 */ 2235 int 2236 utf_tolower(a) 2237 int a; 2238 { 2239 /* If 'casemap' contains "keepascii" use ASCII style tolower(). */ 2240 if (a < 128 && (cmp_flags & CMP_KEEPASCII)) 2241 return TOLOWER_ASC(a); 2242 2243 #if defined(HAVE_TOWLOWER) && defined(__STDC_ISO_10646__) 2244 /* If towlower() is available and handles Unicode, use it. */ 2245 if (!(cmp_flags & CMP_INTERNAL)) 2246 return towlower(a); 2247 #endif 2248 2249 /* For characters below 128 use locale sensitive tolower(). */ 2250 if (a < 128) 2251 return TOLOWER_LOC(a); 2252 2253 /* For any other characters use the above mapping table. */ 2254 return utf_convert(a, toLower, sizeof(toLower)); 2255 } 2256 2257 int 2258 utf_isupper(a) 2259 int a; 2260 { 2261 return (utf_tolower(a) != a); 2262 } 2263 2264 /* 2265 * Version of strnicmp() that handles multi-byte characters. 2266 * Needed for Big5, Sjift-JIS and UTF-8 encoding. Other DBCS encodings can 2267 * probably use strnicmp(), because there are no ASCII characters in the 2268 * second byte. 2269 * Returns zero if s1 and s2 are equal (ignoring case), the difference between 2270 * two characters otherwise. 2271 */ 2272 int 2273 mb_strnicmp(s1, s2, nn) 2274 char_u *s1, *s2; 2275 size_t nn; 2276 { 2277 int i, j, l; 2278 int cdiff; 2279 int incomplete = FALSE; 2280 int n = (int)nn; 2281 2282 for (i = 0; i < n; i += l) 2283 { 2284 if (s1[i] == NUL && s2[i] == NUL) /* both strings end */ 2285 return 0; 2286 if (enc_utf8) 2287 { 2288 l = utf_byte2len(s1[i]); 2289 if (l > n - i) 2290 { 2291 l = n - i; /* incomplete character */ 2292 incomplete = TRUE; 2293 } 2294 /* Check directly first, it's faster. */ 2295 for (j = 0; j < l; ++j) 2296 { 2297 if (s1[i + j] != s2[i + j]) 2298 break; 2299 if (s1[i + j] == 0) 2300 /* Both stings have the same bytes but are incomplete or 2301 * have illegal bytes, accept them as equal. */ 2302 l = j; 2303 } 2304 if (j < l) 2305 { 2306 /* If one of the two characters is incomplete return -1. */ 2307 if (incomplete || i + utf_byte2len(s2[i]) > n) 2308 return -1; 2309 cdiff = utf_fold(utf_ptr2char(s1 + i)) 2310 - utf_fold(utf_ptr2char(s2 + i)); 2311 if (cdiff != 0) 2312 return cdiff; 2313 } 2314 } 2315 else 2316 { 2317 l = (*mb_ptr2len)(s1 + i); 2318 if (l <= 1) 2319 { 2320 /* Single byte: first check normally, then with ignore case. */ 2321 if (s1[i] != s2[i]) 2322 { 2323 cdiff = TOLOWER_LOC(s1[i]) - TOLOWER_LOC(s2[i]); 2324 if (cdiff != 0) 2325 return cdiff; 2326 } 2327 } 2328 else 2329 { 2330 /* For non-Unicode multi-byte don't ignore case. */ 2331 if (l > n - i) 2332 l = n - i; 2333 cdiff = STRNCMP(s1 + i, s2 + i, l); 2334 if (cdiff != 0) 2335 return cdiff; 2336 } 2337 } 2338 } 2339 return 0; 2340 } 2341 2342 /* 2343 * "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what 2344 * 'encoding' has been set to. 2345 */ 2346 void 2347 show_utf8() 2348 { 2349 int len; 2350 int rlen = 0; 2351 char_u *line; 2352 int clen; 2353 int i; 2354 2355 /* Get the byte length of the char under the cursor, including composing 2356 * characters. */ 2357 line = ml_get_cursor(); 2358 len = utfc_ptr2len(line); 2359 if (len == 0) 2360 { 2361 MSG("NUL"); 2362 return; 2363 } 2364 2365 clen = 0; 2366 for (i = 0; i < len; ++i) 2367 { 2368 if (clen == 0) 2369 { 2370 /* start of (composing) character, get its length */ 2371 if (i > 0) 2372 { 2373 STRCPY(IObuff + rlen, "+ "); 2374 rlen += 2; 2375 } 2376 clen = utf_ptr2len(line + i); 2377 } 2378 sprintf((char *)IObuff + rlen, "%02x ", line[i]); 2379 --clen; 2380 rlen += (int)STRLEN(IObuff + rlen); 2381 if (rlen > IOSIZE - 20) 2382 break; 2383 } 2384 2385 msg(IObuff); 2386 } 2387 2388 /* 2389 * mb_head_off() function pointer. 2390 * Return offset from "p" to the first byte of the character it points into. 2391 * Returns 0 when already at the first byte of a character. 2392 */ 2393 /*ARGSUSED*/ 2394 int 2395 latin_head_off(base, p) 2396 char_u *base; 2397 char_u *p; 2398 { 2399 return 0; 2400 } 2401 2402 int 2403 dbcs_head_off(base, p) 2404 char_u *base; 2405 char_u *p; 2406 { 2407 char_u *q; 2408 2409 /* It can't be a trailing byte when not using DBCS, at the start of the 2410 * string or the previous byte can't start a double-byte. */ 2411 if (p <= base || MB_BYTE2LEN(p[-1]) == 1) 2412 return 0; 2413 2414 /* This is slow: need to start at the base and go forward until the 2415 * byte we are looking for. Return 1 when we went past it, 0 otherwise. */ 2416 q = base; 2417 while (q < p) 2418 q += dbcs_ptr2len(q); 2419 return (q == p) ? 0 : 1; 2420 } 2421 2422 #if defined(FEAT_CLIPBOARD) || defined(FEAT_GUI) || defined(FEAT_RIGHTLEFT) \ 2423 || defined(PROTO) 2424 /* 2425 * Special version of dbcs_head_off() that works for ScreenLines[], where 2426 * single-width DBCS_JPNU characters are stored separately. 2427 */ 2428 int 2429 dbcs_screen_head_off(base, p) 2430 char_u *base; 2431 char_u *p; 2432 { 2433 char_u *q; 2434 2435 /* It can't be a trailing byte when not using DBCS, at the start of the 2436 * string or the previous byte can't start a double-byte. 2437 * For euc-jp an 0x8e byte in the previous cell always means we have a 2438 * lead byte in the current cell. */ 2439 if (p <= base 2440 || (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e) 2441 || MB_BYTE2LEN(p[-1]) == 1) 2442 return 0; 2443 2444 /* This is slow: need to start at the base and go forward until the 2445 * byte we are looking for. Return 1 when we went past it, 0 otherwise. 2446 * For DBCS_JPNU look out for 0x8e, which means the second byte is not 2447 * stored as the next byte. */ 2448 q = base; 2449 while (q < p) 2450 { 2451 if (enc_dbcs == DBCS_JPNU && *q == 0x8e) 2452 ++q; 2453 else 2454 q += dbcs_ptr2len(q); 2455 } 2456 return (q == p) ? 0 : 1; 2457 } 2458 #endif 2459 2460 int 2461 utf_head_off(base, p) 2462 char_u *base; 2463 char_u *p; 2464 { 2465 char_u *q; 2466 char_u *s; 2467 int c; 2468 #ifdef FEAT_ARABIC 2469 char_u *j; 2470 #endif 2471 2472 if (*p < 0x80) /* be quick for ASCII */ 2473 return 0; 2474 2475 /* Skip backwards over trailing bytes: 10xx.xxxx 2476 * Skip backwards again if on a composing char. */ 2477 for (q = p; ; --q) 2478 { 2479 /* Move s to the last byte of this char. */ 2480 for (s = q; (s[1] & 0xc0) == 0x80; ++s) 2481 ; 2482 /* Move q to the first byte of this char. */ 2483 while (q > base && (*q & 0xc0) == 0x80) 2484 --q; 2485 /* Check for illegal sequence. Do allow an illegal byte after where we 2486 * started. */ 2487 if (utf8len_tab[*q] != (int)(s - q + 1) 2488 && utf8len_tab[*q] != (int)(p - q + 1)) 2489 return 0; 2490 2491 if (q <= base) 2492 break; 2493 2494 c = utf_ptr2char(q); 2495 if (utf_iscomposing(c)) 2496 continue; 2497 2498 #ifdef FEAT_ARABIC 2499 if (arabic_maycombine(c)) 2500 { 2501 /* Advance to get a sneak-peak at the next char */ 2502 j = q; 2503 --j; 2504 /* Move j to the first byte of this char. */ 2505 while (j > base && (*j & 0xc0) == 0x80) 2506 --j; 2507 if (arabic_combine(utf_ptr2char(j), c)) 2508 continue; 2509 } 2510 #endif 2511 break; 2512 } 2513 2514 return (int)(p - q); 2515 } 2516 2517 #if defined(FEAT_EVAL) || defined(PROTO) 2518 /* 2519 * Copy a character from "*fp" to "*tp" and advance the pointers. 2520 */ 2521 void 2522 mb_copy_char(fp, tp) 2523 char_u **fp; 2524 char_u **tp; 2525 { 2526 int l = (*mb_ptr2len)(*fp); 2527 2528 mch_memmove(*tp, *fp, (size_t)l); 2529 *tp += l; 2530 *fp += l; 2531 } 2532 #endif 2533 2534 /* 2535 * Return the offset from "p" to the first byte of a character. When "p" is 2536 * at the start of a character 0 is returned, otherwise the offset to the next 2537 * character. Can start anywhere in a stream of bytes. 2538 */ 2539 int 2540 mb_off_next(base, p) 2541 char_u *base; 2542 char_u *p; 2543 { 2544 int i; 2545 int j; 2546 2547 if (enc_utf8) 2548 { 2549 if (*p < 0x80) /* be quick for ASCII */ 2550 return 0; 2551 2552 /* Find the next character that isn't 10xx.xxxx */ 2553 for (i = 0; (p[i] & 0xc0) == 0x80; ++i) 2554 ; 2555 if (i > 0) 2556 { 2557 /* Check for illegal sequence. */ 2558 for (j = 0; p - j > base; ++j) 2559 if ((p[-j] & 0xc0) != 0x80) 2560 break; 2561 if (utf8len_tab[p[-j]] != i + j) 2562 return 0; 2563 } 2564 return i; 2565 } 2566 2567 /* Only need to check if we're on a trail byte, it doesn't matter if we 2568 * want the offset to the next or current character. */ 2569 return (*mb_head_off)(base, p); 2570 } 2571 2572 /* 2573 * Return the offset from "p" to the last byte of the character it points 2574 * into. Can start anywhere in a stream of bytes. 2575 */ 2576 int 2577 mb_tail_off(base, p) 2578 char_u *base; 2579 char_u *p; 2580 { 2581 int i; 2582 int j; 2583 2584 if (*p == NUL) 2585 return 0; 2586 2587 if (enc_utf8) 2588 { 2589 /* Find the last character that is 10xx.xxxx */ 2590 for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i) 2591 ; 2592 /* Check for illegal sequence. */ 2593 for (j = 0; p - j > base; ++j) 2594 if ((p[-j] & 0xc0) != 0x80) 2595 break; 2596 if (utf8len_tab[p[-j]] != i + j + 1) 2597 return 0; 2598 return i; 2599 } 2600 2601 /* It can't be the first byte if a double-byte when not using DBCS, at the 2602 * end of the string or the byte can't start a double-byte. */ 2603 if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1) 2604 return 0; 2605 2606 /* Return 1 when on the lead byte, 0 when on the tail byte. */ 2607 return 1 - dbcs_head_off(base, p); 2608 } 2609 2610 /* 2611 * Find the next illegal byte sequence. 2612 */ 2613 void 2614 utf_find_illegal() 2615 { 2616 pos_T pos = curwin->w_cursor; 2617 char_u *p; 2618 int len; 2619 vimconv_T vimconv; 2620 char_u *tofree = NULL; 2621 2622 vimconv.vc_type = CONV_NONE; 2623 if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT)) 2624 { 2625 /* 'encoding' is "utf-8" but we are editing a 8-bit encoded file, 2626 * possibly a utf-8 file with illegal bytes. Setup for conversion 2627 * from utf-8 to 'fileencoding'. */ 2628 convert_setup(&vimconv, p_enc, curbuf->b_p_fenc); 2629 } 2630 2631 #ifdef FEAT_VIRTUALEDIT 2632 curwin->w_cursor.coladd = 0; 2633 #endif 2634 for (;;) 2635 { 2636 p = ml_get_cursor(); 2637 if (vimconv.vc_type != CONV_NONE) 2638 { 2639 vim_free(tofree); 2640 tofree = string_convert(&vimconv, p, NULL); 2641 if (tofree == NULL) 2642 break; 2643 p = tofree; 2644 } 2645 2646 while (*p != NUL) 2647 { 2648 /* Illegal means that there are not enough trail bytes (checked by 2649 * utf_ptr2len()) or too many of them (overlong sequence). */ 2650 len = utf_ptr2len(p); 2651 if (*p >= 0x80 && (len == 1 2652 || utf_char2len(utf_ptr2char(p)) != len)) 2653 { 2654 if (vimconv.vc_type == CONV_NONE) 2655 curwin->w_cursor.col += (colnr_T)(p - ml_get_cursor()); 2656 else 2657 { 2658 int l; 2659 2660 len = (int)(p - tofree); 2661 for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l) 2662 { 2663 l = utf_ptr2len(p); 2664 curwin->w_cursor.col += l; 2665 } 2666 } 2667 goto theend; 2668 } 2669 p += len; 2670 } 2671 if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count) 2672 break; 2673 ++curwin->w_cursor.lnum; 2674 curwin->w_cursor.col = 0; 2675 } 2676 2677 /* didn't find it: don't move and beep */ 2678 curwin->w_cursor = pos; 2679 beep_flush(); 2680 2681 theend: 2682 vim_free(tofree); 2683 convert_setup(&vimconv, NULL, NULL); 2684 } 2685 2686 #if defined(HAVE_GTK2) || defined(PROTO) 2687 /* 2688 * Return TRUE if string "s" is a valid utf-8 string. 2689 * When "end" is NULL stop at the first NUL. 2690 * When "end" is positive stop there. 2691 */ 2692 int 2693 utf_valid_string(s, end) 2694 char_u *s; 2695 char_u *end; 2696 { 2697 int l; 2698 char_u *p = s; 2699 2700 while (end == NULL ? *p != NUL : p < end) 2701 { 2702 if ((*p & 0xc0) == 0x80) 2703 return FALSE; /* invalid lead byte */ 2704 l = utf8len_tab[*p]; 2705 if (end != NULL && p + l > end) 2706 return FALSE; /* incomplete byte sequence */ 2707 ++p; 2708 while (--l > 0) 2709 if ((*p++ & 0xc0) != 0x80) 2710 return FALSE; /* invalid trail byte */ 2711 } 2712 return TRUE; 2713 } 2714 #endif 2715 2716 #if defined(FEAT_GUI) || defined(PROTO) 2717 /* 2718 * Special version of mb_tail_off() for use in ScreenLines[]. 2719 */ 2720 int 2721 dbcs_screen_tail_off(base, p) 2722 char_u *base; 2723 char_u *p; 2724 { 2725 /* It can't be the first byte if a double-byte when not using DBCS, at the 2726 * end of the string or the byte can't start a double-byte. 2727 * For euc-jp an 0x8e byte always means we have a lead byte in the current 2728 * cell. */ 2729 if (*p == NUL || p[1] == NUL 2730 || (enc_dbcs == DBCS_JPNU && *p == 0x8e) 2731 || MB_BYTE2LEN(*p) == 1) 2732 return 0; 2733 2734 /* Return 1 when on the lead byte, 0 when on the tail byte. */ 2735 return 1 - dbcs_screen_head_off(base, p); 2736 } 2737 #endif 2738 2739 /* 2740 * If the cursor moves on an trail byte, set the cursor on the lead byte. 2741 * Thus it moves left if necessary. 2742 * Return TRUE when the cursor was adjusted. 2743 */ 2744 void 2745 mb_adjust_cursor() 2746 { 2747 mb_adjustpos(&curwin->w_cursor); 2748 } 2749 2750 /* 2751 * Adjust position "*lp" to point to the first byte of a multi-byte character. 2752 * If it points to a tail byte it's moved backwards to the head byte. 2753 */ 2754 void 2755 mb_adjustpos(lp) 2756 pos_T *lp; 2757 { 2758 char_u *p; 2759 2760 if (lp->col > 0 2761 #ifdef FEAT_VIRTUALEDIT 2762 || lp->coladd > 1 2763 #endif 2764 ) 2765 { 2766 p = ml_get(lp->lnum); 2767 lp->col -= (*mb_head_off)(p, p + lp->col); 2768 #ifdef FEAT_VIRTUALEDIT 2769 /* Reset "coladd" when the cursor would be on the right half of a 2770 * double-wide character. */ 2771 if (lp->coladd == 1 2772 && p[lp->col] != TAB 2773 && vim_isprintc((*mb_ptr2char)(p + lp->col)) 2774 && ptr2cells(p + lp->col) > 1) 2775 lp->coladd = 0; 2776 #endif 2777 } 2778 } 2779 2780 /* 2781 * Return a pointer to the character before "*p", if there is one. 2782 */ 2783 char_u * 2784 mb_prevptr(line, p) 2785 char_u *line; /* start of the string */ 2786 char_u *p; 2787 { 2788 if (p > line) 2789 mb_ptr_back(line, p); 2790 return p; 2791 } 2792 2793 /* 2794 * Return the character length of "str". Each multi-byte character (with 2795 * following composing characters) counts as one. 2796 */ 2797 int 2798 mb_charlen(str) 2799 char_u *str; 2800 { 2801 char_u *p = str; 2802 int count; 2803 2804 if (p == NULL) 2805 return 0; 2806 2807 for (count = 0; *p != NUL; count++) 2808 p += (*mb_ptr2len)(p); 2809 2810 return count; 2811 } 2812 2813 #if defined(FEAT_SPELL) || defined(PROTO) 2814 /* 2815 * Like mb_charlen() but for a string with specified length. 2816 */ 2817 int 2818 mb_charlen_len(str, len) 2819 char_u *str; 2820 int len; 2821 { 2822 char_u *p = str; 2823 int count; 2824 2825 for (count = 0; *p != NUL && p < str + len; count++) 2826 p += (*mb_ptr2len)(p); 2827 2828 return count; 2829 } 2830 #endif 2831 2832 /* 2833 * Try to un-escape a multi-byte character. 2834 * Used for the "to" and "from" part of a mapping. 2835 * Return the un-escaped string if it is a multi-byte character, and advance 2836 * "pp" to just after the bytes that formed it. 2837 * Return NULL if no multi-byte char was found. 2838 */ 2839 char_u * 2840 mb_unescape(pp) 2841 char_u **pp; 2842 { 2843 static char_u buf[MB_MAXBYTES + 1]; 2844 int n, m = 0; 2845 char_u *str = *pp; 2846 2847 /* Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI 2848 * KS_EXTRA KE_CSI to CSI. */ 2849 for (n = 0; str[n] != NUL && m <= MB_MAXBYTES; ++n) 2850 { 2851 if (str[n] == K_SPECIAL 2852 && str[n + 1] == KS_SPECIAL 2853 && str[n + 2] == KE_FILLER) 2854 { 2855 buf[m++] = K_SPECIAL; 2856 n += 2; 2857 } 2858 # ifdef FEAT_GUI 2859 else if (str[n] == CSI 2860 && str[n + 1] == KS_EXTRA 2861 && str[n + 2] == (int)KE_CSI) 2862 { 2863 buf[m++] = CSI; 2864 n += 2; 2865 } 2866 # endif 2867 else if (str[n] == K_SPECIAL 2868 # ifdef FEAT_GUI 2869 || str[n] == CSI 2870 # endif 2871 ) 2872 break; /* a special key can't be a multibyte char */ 2873 else 2874 buf[m++] = str[n]; 2875 buf[m] = NUL; 2876 2877 /* Return a multi-byte character if it's found. An illegal sequence 2878 * will result in a 1 here. */ 2879 if ((*mb_ptr2len)(buf) > 1) 2880 { 2881 *pp = str + n + 1; 2882 return buf; 2883 } 2884 } 2885 return NULL; 2886 } 2887 2888 /* 2889 * Return TRUE if the character at "row"/"col" on the screen is the left side 2890 * of a double-width character. 2891 * Caller must make sure "row" and "col" are not invalid! 2892 */ 2893 int 2894 mb_lefthalve(row, col) 2895 int row; 2896 int col; 2897 { 2898 #ifdef FEAT_HANGULIN 2899 if (composing_hangul) 2900 return TRUE; 2901 #endif 2902 if (enc_dbcs != 0) 2903 return dbcs_off2cells(LineOffset[row] + col) > 1; 2904 if (enc_utf8) 2905 return (col + 1 < Columns 2906 && ScreenLines[LineOffset[row] + col + 1] == 0); 2907 return FALSE; 2908 } 2909 2910 # if defined(FEAT_CLIPBOARD) || defined(FEAT_GUI) || defined(FEAT_RIGHTLEFT) \ 2911 || defined(PROTO) 2912 /* 2913 * Correct a position on the screen, if it's the right halve of a double-wide 2914 * char move it to the left halve. Returns the corrected column. 2915 */ 2916 int 2917 mb_fix_col(col, row) 2918 int col; 2919 int row; 2920 { 2921 col = check_col(col); 2922 row = check_row(row); 2923 if (has_mbyte && ScreenLines != NULL && col > 0 2924 && ((enc_dbcs 2925 && ScreenLines[LineOffset[row] + col] != NUL 2926 && dbcs_screen_head_off(ScreenLines + LineOffset[row], 2927 ScreenLines + LineOffset[row] + col)) 2928 || (enc_utf8 && ScreenLines[LineOffset[row] + col] == 0))) 2929 --col; 2930 return col; 2931 } 2932 # endif 2933 #endif 2934 2935 #if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO) 2936 static int enc_alias_search __ARGS((char_u *name)); 2937 2938 /* 2939 * Skip the Vim specific head of a 'encoding' name. 2940 */ 2941 char_u * 2942 enc_skip(p) 2943 char_u *p; 2944 { 2945 if (STRNCMP(p, "2byte-", 6) == 0) 2946 return p + 6; 2947 if (STRNCMP(p, "8bit-", 5) == 0) 2948 return p + 5; 2949 return p; 2950 } 2951 2952 /* 2953 * Find the canonical name for encoding "enc". 2954 * When the name isn't recognized, returns "enc" itself, but with all lower 2955 * case characters and '_' replaced with '-'. 2956 * Returns an allocated string. NULL for out-of-memory. 2957 */ 2958 char_u * 2959 enc_canonize(enc) 2960 char_u *enc; 2961 { 2962 char_u *r; 2963 char_u *p, *s; 2964 int i; 2965 2966 # ifdef FEAT_MBYTE 2967 if (STRCMP(enc, "default") == 0) 2968 { 2969 /* Use the default encoding as it's found by set_init_1(). */ 2970 r = get_encoding_default(); 2971 if (r == NULL) 2972 r = (char_u *)"latin1"; 2973 return vim_strsave(r); 2974 } 2975 # endif 2976 2977 /* copy "enc" to allocted memory, with room for two '-' */ 2978 r = alloc((unsigned)(STRLEN(enc) + 3)); 2979 if (r != NULL) 2980 { 2981 /* Make it all lower case and replace '_' with '-'. */ 2982 p = r; 2983 for (s = enc; *s != NUL; ++s) 2984 { 2985 if (*s == '_') 2986 *p++ = '-'; 2987 else 2988 *p++ = TOLOWER_ASC(*s); 2989 } 2990 *p = NUL; 2991 2992 /* Skip "2byte-" and "8bit-". */ 2993 p = enc_skip(r); 2994 2995 /* Change "microsoft-cp" to "cp". Used in some spell files. */ 2996 if (STRNCMP(p, "microsoft-cp", 12) == 0) 2997 mch_memmove(p, p + 10, STRLEN(p + 10) + 1); 2998 2999 /* "iso8859" -> "iso-8859" */ 3000 if (STRNCMP(p, "iso8859", 7) == 0) 3001 { 3002 mch_memmove(p + 4, p + 3, STRLEN(p + 2)); 3003 p[3] = '-'; 3004 } 3005 3006 /* "iso-8859n" -> "iso-8859-n" */ 3007 if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-') 3008 { 3009 mch_memmove(p + 9, p + 8, STRLEN(p + 7)); 3010 p[8] = '-'; 3011 } 3012 3013 /* "latin-N" -> "latinN" */ 3014 if (STRNCMP(p, "latin-", 6) == 0) 3015 mch_memmove(p + 5, p + 6, STRLEN(p + 5)); 3016 3017 if (enc_canon_search(p) >= 0) 3018 { 3019 /* canonical name can be used unmodified */ 3020 if (p != r) 3021 mch_memmove(r, p, STRLEN(p) + 1); 3022 } 3023 else if ((i = enc_alias_search(p)) >= 0) 3024 { 3025 /* alias recognized, get canonical name */ 3026 vim_free(r); 3027 r = vim_strsave((char_u *)enc_canon_table[i].name); 3028 } 3029 } 3030 return r; 3031 } 3032 3033 /* 3034 * Search for an encoding alias of "name". 3035 * Returns -1 when not found. 3036 */ 3037 static int 3038 enc_alias_search(name) 3039 char_u *name; 3040 { 3041 int i; 3042 3043 for (i = 0; enc_alias_table[i].name != NULL; ++i) 3044 if (STRCMP(name, enc_alias_table[i].name) == 0) 3045 return enc_alias_table[i].canon; 3046 return -1; 3047 } 3048 #endif 3049 3050 #if defined(FEAT_MBYTE) || defined(PROTO) 3051 3052 #ifdef HAVE_LANGINFO_H 3053 # include <langinfo.h> 3054 #endif 3055 3056 /* 3057 * Get the canonicalized encoding of the current locale. 3058 * Returns an allocated string when successful, NULL when not. 3059 */ 3060 char_u * 3061 enc_locale() 3062 { 3063 #ifndef WIN3264 3064 char *s; 3065 char *p; 3066 int i; 3067 #endif 3068 char buf[50]; 3069 #ifdef WIN3264 3070 long acp = GetACP(); 3071 3072 if (acp == 1200) 3073 STRCPY(buf, "ucs-2le"); 3074 else if (acp == 1252) /* cp1252 is used as latin1 */ 3075 STRCPY(buf, "latin1"); 3076 else 3077 sprintf(buf, "cp%ld", acp); 3078 #else 3079 # ifdef HAVE_NL_LANGINFO_CODESET 3080 if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL) 3081 # endif 3082 # if defined(HAVE_LOCALE_H) || defined(X_LOCALE) 3083 if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL) 3084 # endif 3085 if ((s = getenv("LC_ALL")) == NULL || *s == NUL) 3086 if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL) 3087 s = getenv("LANG"); 3088 3089 if (s == NULL || *s == NUL) 3090 return FAIL; 3091 3092 /* The most generic locale format is: 3093 * language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]] 3094 * If there is a '.' remove the part before it. 3095 * if there is something after the codeset, remove it. 3096 * Make the name lowercase and replace '_' with '-'. 3097 * Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn", 3098 * "ko_KR.EUC" == "euc-kr" 3099 */ 3100 if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL) 3101 { 3102 if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0 3103 && !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_') 3104 { 3105 /* copy "XY.EUC" to "euc-XY" to buf[10] */ 3106 STRCPY(buf + 10, "euc-"); 3107 buf[14] = p[-2]; 3108 buf[15] = p[-1]; 3109 buf[16] = 0; 3110 s = buf + 10; 3111 } 3112 else 3113 s = p + 1; 3114 } 3115 for (i = 0; s[i] != NUL && s + i < buf + sizeof(buf) - 1; ++i) 3116 { 3117 if (s[i] == '_' || s[i] == '-') 3118 buf[i] = '-'; 3119 else if (isalnum((int)s[i])) 3120 buf[i] = TOLOWER_ASC(s[i]); 3121 else 3122 break; 3123 } 3124 buf[i] = NUL; 3125 #endif 3126 3127 return enc_canonize((char_u *)buf); 3128 } 3129 3130 #if defined(WIN3264) || defined(PROTO) 3131 /* 3132 * Convert an encoding name to an MS-Windows codepage. 3133 * Returns zero if no codepage can be figured out. 3134 */ 3135 int 3136 encname2codepage(name) 3137 char_u *name; 3138 { 3139 int cp; 3140 char_u *p = name; 3141 int idx; 3142 3143 if (STRNCMP(p, "8bit-", 5) == 0) 3144 p += 5; 3145 else if (STRNCMP(p_enc, "2byte-", 6) == 0) 3146 p += 6; 3147 3148 if (p[0] == 'c' && p[1] == 'p') 3149 cp = atoi(p + 2); 3150 else if ((idx = enc_canon_search(p)) >= 0) 3151 cp = enc_canon_table[idx].codepage; 3152 else 3153 return 0; 3154 if (IsValidCodePage(cp)) 3155 return cp; 3156 return 0; 3157 } 3158 #endif 3159 3160 # if defined(USE_ICONV) || defined(PROTO) 3161 3162 static char_u *iconv_string __ARGS((vimconv_T *vcp, char_u *str, int slen, int *unconvlenp)); 3163 3164 /* 3165 * Call iconv_open() with a check if iconv() works properly (there are broken 3166 * versions). 3167 * Returns (void *)-1 if failed. 3168 * (should return iconv_t, but that causes problems with prototypes). 3169 */ 3170 void * 3171 my_iconv_open(to, from) 3172 char_u *to; 3173 char_u *from; 3174 { 3175 iconv_t fd; 3176 #define ICONV_TESTLEN 400 3177 char_u tobuf[ICONV_TESTLEN]; 3178 char *p; 3179 size_t tolen; 3180 static int iconv_ok = -1; 3181 3182 if (iconv_ok == FALSE) 3183 return (void *)-1; /* detected a broken iconv() previously */ 3184 3185 #ifdef DYNAMIC_ICONV 3186 /* Check if the iconv.dll can be found. */ 3187 if (!iconv_enabled(TRUE)) 3188 return (void *)-1; 3189 #endif 3190 3191 fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from)); 3192 3193 if (fd != (iconv_t)-1 && iconv_ok == -1) 3194 { 3195 /* 3196 * Do a dummy iconv() call to check if it actually works. There is a 3197 * version of iconv() on Linux that is broken. We can't ignore it, 3198 * because it's wide-spread. The symptoms are that after outputting 3199 * the initial shift state the "to" pointer is NULL and conversion 3200 * stops for no apparent reason after about 8160 characters. 3201 */ 3202 p = (char *)tobuf; 3203 tolen = ICONV_TESTLEN; 3204 (void)iconv(fd, NULL, NULL, &p, &tolen); 3205 if (p == NULL) 3206 { 3207 iconv_ok = FALSE; 3208 iconv_close(fd); 3209 fd = (iconv_t)-1; 3210 } 3211 else 3212 iconv_ok = TRUE; 3213 } 3214 3215 return (void *)fd; 3216 } 3217 3218 /* 3219 * Convert the string "str[slen]" with iconv(). 3220 * If "unconvlenp" is not NULL handle the string ending in an incomplete 3221 * sequence and set "*unconvlenp" to the length of it. 3222 * Returns the converted string in allocated memory. NULL for an error. 3223 */ 3224 static char_u * 3225 iconv_string(vcp, str, slen, unconvlenp) 3226 vimconv_T *vcp; 3227 char_u *str; 3228 int slen; 3229 int *unconvlenp; 3230 { 3231 const char *from; 3232 size_t fromlen; 3233 char *to; 3234 size_t tolen; 3235 size_t len = 0; 3236 size_t done = 0; 3237 char_u *result = NULL; 3238 char_u *p; 3239 int l; 3240 3241 from = (char *)str; 3242 fromlen = slen; 3243 for (;;) 3244 { 3245 if (len == 0 || ICONV_ERRNO == ICONV_E2BIG) 3246 { 3247 /* Allocate enough room for most conversions. When re-allocating 3248 * increase the buffer size. */ 3249 len = len + fromlen * 2 + 40; 3250 p = alloc((unsigned)len); 3251 if (p != NULL && done > 0) 3252 mch_memmove(p, result, done); 3253 vim_free(result); 3254 result = p; 3255 if (result == NULL) /* out of memory */ 3256 break; 3257 } 3258 3259 to = (char *)result + done; 3260 tolen = len - done - 2; 3261 /* Avoid a warning for systems with a wrong iconv() prototype by 3262 * casting the second argument to void *. */ 3263 if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen) 3264 != (size_t)-1) 3265 { 3266 /* Finished, append a NUL. */ 3267 *to = NUL; 3268 break; 3269 } 3270 3271 /* Check both ICONV_EINVAL and EINVAL, because the dynamically loaded 3272 * iconv library may use one of them. */ 3273 if (!vcp->vc_fail && unconvlenp != NULL 3274 && (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) 3275 { 3276 /* Handle an incomplete sequence at the end. */ 3277 *to = NUL; 3278 *unconvlenp = (int)fromlen; 3279 break; 3280 } 3281 3282 /* Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded 3283 * iconv library may use one of them. */ 3284 else if (!vcp->vc_fail 3285 && (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ 3286 || ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) 3287 { 3288 /* Can't convert: insert a '?' and skip a character. This assumes 3289 * conversion from 'encoding' to something else. In other 3290 * situations we don't know what to skip anyway. */ 3291 *to++ = '?'; 3292 if ((*mb_ptr2cells)((char_u *)from) > 1) 3293 *to++ = '?'; 3294 if (enc_utf8) 3295 l = utfc_ptr2len_len((char_u *)from, (int)fromlen); 3296 else 3297 { 3298 l = (*mb_ptr2len)((char_u *)from); 3299 if (l > (int)fromlen) 3300 l = (int)fromlen; 3301 } 3302 from += l; 3303 fromlen -= l; 3304 } 3305 else if (ICONV_ERRNO != ICONV_E2BIG) 3306 { 3307 /* conversion failed */ 3308 vim_free(result); 3309 result = NULL; 3310 break; 3311 } 3312 /* Not enough room or skipping illegal sequence. */ 3313 done = to - (char *)result; 3314 } 3315 return result; 3316 } 3317 3318 # if defined(DYNAMIC_ICONV) || defined(PROTO) 3319 /* 3320 * Dynamically load the "iconv.dll" on Win32. 3321 */ 3322 3323 #ifndef DYNAMIC_ICONV /* just generating prototypes */ 3324 # define HINSTANCE int 3325 #endif 3326 static HINSTANCE hIconvDLL = 0; 3327 static HINSTANCE hMsvcrtDLL = 0; 3328 3329 # ifndef DYNAMIC_ICONV_DLL 3330 # define DYNAMIC_ICONV_DLL "iconv.dll" 3331 # define DYNAMIC_ICONV_DLL_ALT "libiconv.dll" 3332 # endif 3333 # ifndef DYNAMIC_MSVCRT_DLL 3334 # define DYNAMIC_MSVCRT_DLL "msvcrt.dll" 3335 # endif 3336 3337 /* 3338 * Try opening the iconv.dll and return TRUE if iconv() can be used. 3339 */ 3340 int 3341 iconv_enabled(verbose) 3342 int verbose; 3343 { 3344 if (hIconvDLL != 0 && hMsvcrtDLL != 0) 3345 return TRUE; 3346 hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL); 3347 if (hIconvDLL == 0) /* sometimes it's called libiconv.dll */ 3348 hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL_ALT); 3349 if (hIconvDLL != 0) 3350 hMsvcrtDLL = LoadLibrary(DYNAMIC_MSVCRT_DLL); 3351 if (hIconvDLL == 0 || hMsvcrtDLL == 0) 3352 { 3353 /* Only give the message when 'verbose' is set, otherwise it might be 3354 * done whenever a conversion is attempted. */ 3355 if (verbose && p_verbose > 0) 3356 { 3357 verbose_enter(); 3358 EMSG2(_(e_loadlib), 3359 hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL); 3360 verbose_leave(); 3361 } 3362 iconv_end(); 3363 return FALSE; 3364 } 3365 3366 iconv = (void *)GetProcAddress(hIconvDLL, "libiconv"); 3367 iconv_open = (void *)GetProcAddress(hIconvDLL, "libiconv_open"); 3368 iconv_close = (void *)GetProcAddress(hIconvDLL, "libiconv_close"); 3369 iconvctl = (void *)GetProcAddress(hIconvDLL, "libiconvctl"); 3370 iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno"); 3371 if (iconv == NULL || iconv_open == NULL || iconv_close == NULL 3372 || iconvctl == NULL || iconv_errno == NULL) 3373 { 3374 iconv_end(); 3375 if (verbose && p_verbose > 0) 3376 { 3377 verbose_enter(); 3378 EMSG2(_(e_loadfunc), "for libiconv"); 3379 verbose_leave(); 3380 } 3381 return FALSE; 3382 } 3383 return TRUE; 3384 } 3385 3386 void 3387 iconv_end() 3388 { 3389 /* Don't use iconv() when inputting or outputting characters. */ 3390 if (input_conv.vc_type == CONV_ICONV) 3391 convert_setup(&input_conv, NULL, NULL); 3392 if (output_conv.vc_type == CONV_ICONV) 3393 convert_setup(&output_conv, NULL, NULL); 3394 3395 if (hIconvDLL != 0) 3396 FreeLibrary(hIconvDLL); 3397 if (hMsvcrtDLL != 0) 3398 FreeLibrary(hMsvcrtDLL); 3399 hIconvDLL = 0; 3400 hMsvcrtDLL = 0; 3401 } 3402 # endif /* DYNAMIC_ICONV */ 3403 # endif /* USE_ICONV */ 3404 3405 #endif /* FEAT_MBYTE */ 3406 3407 #if defined(FEAT_XIM) || defined(PROTO) 3408 3409 # ifdef FEAT_GUI_GTK 3410 static int xim_has_preediting INIT(= FALSE); /* IM current status */ 3411 3412 /* 3413 * Set preedit_start_col to the current cursor position. 3414 */ 3415 static void 3416 init_preedit_start_col(void) 3417 { 3418 if (State & CMDLINE) 3419 preedit_start_col = cmdline_getvcol_cursor(); 3420 else if (curwin != NULL) 3421 getvcol(curwin, &curwin->w_cursor, &preedit_start_col, NULL, NULL); 3422 /* Prevent that preediting marks the buffer as changed. */ 3423 xim_changed_while_preediting = curbuf->b_changed; 3424 } 3425 # endif 3426 3427 # if defined(HAVE_GTK2) && !defined(PROTO) 3428 3429 static int im_is_active = FALSE; /* IM is enabled for current mode */ 3430 static int im_preedit_cursor = 0; /* cursor offset in characters */ 3431 static int im_preedit_trailing = 0; /* number of characters after cursor */ 3432 3433 static unsigned long im_commit_handler_id = 0; 3434 static unsigned int im_activatekey_keyval = GDK_VoidSymbol; 3435 static unsigned int im_activatekey_state = 0; 3436 3437 void 3438 im_set_active(int active) 3439 { 3440 int was_active; 3441 3442 was_active = !!im_is_active; 3443 im_is_active = (active && !p_imdisable); 3444 3445 if (im_is_active != was_active) 3446 xim_reset(); 3447 } 3448 3449 void 3450 xim_set_focus(int focus) 3451 { 3452 if (xic != NULL) 3453 { 3454 if (focus) 3455 gtk_im_context_focus_in(xic); 3456 else 3457 gtk_im_context_focus_out(xic); 3458 } 3459 } 3460 3461 void 3462 im_set_position(int row, int col) 3463 { 3464 if (xic != NULL) 3465 { 3466 GdkRectangle area; 3467 3468 area.x = FILL_X(col); 3469 area.y = FILL_Y(row); 3470 area.width = gui.char_width * (mb_lefthalve(row, col) ? 2 : 1); 3471 area.height = gui.char_height; 3472 3473 gtk_im_context_set_cursor_location(xic, &area); 3474 } 3475 } 3476 3477 # if 0 || defined(PROTO) /* apparently only used in gui_x11.c */ 3478 void 3479 xim_set_preedit(void) 3480 { 3481 im_set_position(gui.row, gui.col); 3482 } 3483 # endif 3484 3485 static void 3486 im_add_to_input(char_u *str, int len) 3487 { 3488 /* Convert from 'termencoding' (always "utf-8") to 'encoding' */ 3489 if (input_conv.vc_type != CONV_NONE) 3490 { 3491 str = string_convert(&input_conv, str, &len); 3492 g_return_if_fail(str != NULL); 3493 } 3494 3495 add_to_input_buf_csi(str, len); 3496 3497 if (input_conv.vc_type != CONV_NONE) 3498 vim_free(str); 3499 3500 if (p_mh) /* blank out the pointer if necessary */ 3501 gui_mch_mousehide(TRUE); 3502 } 3503 3504 static void 3505 im_delete_preedit(void) 3506 { 3507 char_u bskey[] = {CSI, 'k', 'b'}; 3508 char_u delkey[] = {CSI, 'k', 'D'}; 3509 3510 if (State & NORMAL) 3511 { 3512 im_preedit_cursor = 0; 3513 return; 3514 } 3515 for (; im_preedit_cursor > 0; --im_preedit_cursor) 3516 add_to_input_buf(bskey, (int)sizeof(bskey)); 3517 3518 for (; im_preedit_trailing > 0; --im_preedit_trailing) 3519 add_to_input_buf(delkey, (int)sizeof(delkey)); 3520 } 3521 3522 /* 3523 * Move the cursor left by "num_move_back" characters. 3524 * Note that ins_left() checks im_is_preediting() to avoid breaking undo for 3525 * these K_LEFT keys. 3526 */ 3527 static void 3528 im_correct_cursor(int num_move_back) 3529 { 3530 char_u backkey[] = {CSI, 'k', 'l'}; 3531 3532 if (State & NORMAL) 3533 return; 3534 # ifdef FEAT_RIGHTLEFT 3535 if ((State & CMDLINE) == 0 && curwin != NULL && curwin->w_p_rl) 3536 backkey[2] = 'r'; 3537 # endif 3538 for (; num_move_back > 0; --num_move_back) 3539 add_to_input_buf(backkey, (int)sizeof(backkey)); 3540 } 3541 3542 static int xim_expected_char = NUL; 3543 static int xim_ignored_char = FALSE; 3544 3545 /* 3546 * Update the mode and cursor while in an IM callback. 3547 */ 3548 static void 3549 im_show_info(void) 3550 { 3551 int old_vgetc_busy; 3552 3553 old_vgetc_busy = vgetc_busy; 3554 vgetc_busy = TRUE; 3555 showmode(); 3556 vgetc_busy = old_vgetc_busy; 3557 setcursor(); 3558 out_flush(); 3559 } 3560 3561 /* 3562 * Callback invoked when the user finished preediting. 3563 * Put the final string into the input buffer. 3564 */ 3565 /*ARGSUSED0*/ 3566 static void 3567 im_commit_cb(GtkIMContext *context, const gchar *str, gpointer data) 3568 { 3569 int slen = (int)STRLEN(str); 3570 int add_to_input = TRUE; 3571 int clen; 3572 int len = slen; 3573 int commit_with_preedit = TRUE; 3574 char_u *im_str, *p; 3575 3576 #ifdef XIM_DEBUG 3577 xim_log("im_commit_cb(): %s\n", str); 3578 #endif 3579 3580 /* The imhangul module doesn't reset the preedit string before 3581 * committing. Call im_delete_preedit() to work around that. */ 3582 im_delete_preedit(); 3583 3584 /* Indicate that preediting has finished. */ 3585 if (preedit_start_col == MAXCOL) 3586 { 3587 init_preedit_start_col(); 3588 commit_with_preedit = FALSE; 3589 } 3590 3591 /* The thing which setting "preedit_start_col" to MAXCOL means that 3592 * "preedit_start_col" will be set forcely when calling 3593 * preedit_changed_cb() next time. 3594 * "preedit_start_col" should not reset with MAXCOL on this part. Vim 3595 * is simulating the preediting by using add_to_input_str(). when 3596 * preedit begin immediately before committed, the typebuf is not 3597 * flushed to screen, then it can't get correct "preedit_start_col". 3598 * Thus, it should calculate the cells by adding cells of the committed 3599 * string. */ 3600 if (input_conv.vc_type != CONV_NONE) 3601 { 3602 im_str = string_convert(&input_conv, (char_u *)str, &len); 3603 g_return_if_fail(im_str != NULL); 3604 } 3605 else 3606 im_str = (char_u *)str; 3607 clen = 0; 3608 for (p = im_str; p < im_str + len; p += (*mb_ptr2len)(p)) 3609 clen += (*mb_ptr2cells)(p); 3610 if (input_conv.vc_type != CONV_NONE) 3611 vim_free(im_str); 3612 preedit_start_col += clen; 3613 3614 /* Is this a single character that matches a keypad key that's just 3615 * been pressed? If so, we don't want it to be entered as such - let 3616 * us carry on processing the raw keycode so that it may be used in 3617 * mappings as <kSomething>. */ 3618 if (xim_expected_char != NUL) 3619 { 3620 /* We're currently processing a keypad or other special key */ 3621 if (slen == 1 && str[0] == xim_expected_char) 3622 { 3623 /* It's a match - don't do it here */ 3624 xim_ignored_char = TRUE; 3625 add_to_input = FALSE; 3626 } 3627 else 3628 { 3629 /* Not a match */ 3630 xim_ignored_char = FALSE; 3631 } 3632 } 3633 3634 if (add_to_input) 3635 im_add_to_input((char_u *)str, slen); 3636 3637 /* Inserting chars while "im_is_active" is set does not cause a change of 3638 * buffer. When the chars are committed the buffer must be marked as 3639 * changed. */ 3640 if (!commit_with_preedit) 3641 preedit_start_col = MAXCOL; 3642 3643 /* This flag is used in changed() at next call. */ 3644 xim_changed_while_preediting = TRUE; 3645 3646 if (gtk_main_level() > 0) 3647 gtk_main_quit(); 3648 } 3649 3650 /* 3651 * Callback invoked after start to the preedit. 3652 */ 3653 /*ARGSUSED*/ 3654 static void 3655 im_preedit_start_cb(GtkIMContext *context, gpointer data) 3656 { 3657 #ifdef XIM_DEBUG 3658 xim_log("im_preedit_start_cb()\n"); 3659 #endif 3660 3661 im_is_active = TRUE; 3662 gui_update_cursor(TRUE, FALSE); 3663 } 3664 3665 /* 3666 * Callback invoked after end to the preedit. 3667 */ 3668 /*ARGSUSED*/ 3669 static void 3670 im_preedit_end_cb(GtkIMContext *context, gpointer data) 3671 { 3672 #ifdef XIM_DEBUG 3673 xim_log("im_preedit_end_cb()\n"); 3674 #endif 3675 im_delete_preedit(); 3676 3677 /* Indicate that preediting has finished */ 3678 preedit_start_col = MAXCOL; 3679 xim_has_preediting = FALSE; 3680 3681 im_is_active = FALSE; 3682 gui_update_cursor(TRUE, FALSE); 3683 im_show_info(); 3684 } 3685 3686 /* 3687 * Callback invoked after changes to the preedit string. If the preedit 3688 * string was empty before, remember the preedit start column so we know 3689 * where to apply feedback attributes. Delete the previous preedit string 3690 * if there was one, save the new preedit cursor offset, and put the new 3691 * string into the input buffer. 3692 * 3693 * TODO: The pragmatic "put into input buffer" approach used here has 3694 * several fundamental problems: 3695 * 3696 * - The characters in the preedit string are subject to remapping. 3697 * That's broken, only the finally committed string should be remapped. 3698 * 3699 * - There is a race condition involved: The retrieved value for the 3700 * current cursor position will be wrong if any unprocessed characters 3701 * are still queued in the input buffer. 3702 * 3703 * - Due to the lack of synchronization between the file buffer in memory 3704 * and any typed characters, it's practically impossible to implement the 3705 * "retrieve_surrounding" and "delete_surrounding" signals reliably. IM 3706 * modules for languages such as Thai are likely to rely on this feature 3707 * for proper operation. 3708 * 3709 * Conclusions: I think support for preediting needs to be moved to the 3710 * core parts of Vim. Ideally, until it has been committed, the preediting 3711 * string should only be displayed and not affect the buffer content at all. 3712 * The question how to deal with the synchronization issue still remains. 3713 * Circumventing the input buffer is probably not desirable. Anyway, I think 3714 * implementing "retrieve_surrounding" is the only hard problem. 3715 * 3716 * One way to solve all of this in a clean manner would be to queue all key 3717 * press/release events "as is" in the input buffer, and apply the IM filtering 3718 * at the receiving end of the queue. This, however, would have a rather large 3719 * impact on the code base. If there is an easy way to force processing of all 3720 * remaining input from within the "retrieve_surrounding" signal handler, this 3721 * might not be necessary. Gotta ask on vim-dev for opinions. 3722 */ 3723 /*ARGSUSED1*/ 3724 static void 3725 im_preedit_changed_cb(GtkIMContext *context, gpointer data) 3726 { 3727 char *preedit_string = NULL; 3728 int cursor_index = 0; 3729 int num_move_back = 0; 3730 char_u *str; 3731 char_u *p; 3732 int i; 3733 3734 gtk_im_context_get_preedit_string(context, 3735 &preedit_string, NULL, 3736 &cursor_index); 3737 3738 #ifdef XIM_DEBUG 3739 xim_log("im_preedit_changed_cb(): %s\n", preedit_string); 3740 #endif 3741 3742 g_return_if_fail(preedit_string != NULL); /* just in case */ 3743 3744 /* If preedit_start_col is MAXCOL set it to the current cursor position. */ 3745 if (preedit_start_col == MAXCOL && preedit_string[0] != '\0') 3746 { 3747 xim_has_preediting = TRUE; 3748 3749 /* Urgh, this breaks if the input buffer isn't empty now */ 3750 init_preedit_start_col(); 3751 } 3752 else if (cursor_index == 0 && preedit_string[0] == '\0') 3753 { 3754 xim_has_preediting = FALSE; 3755 3756 /* If at the start position (after typing backspace) 3757 * preedit_start_col must be reset. */ 3758 preedit_start_col = MAXCOL; 3759 } 3760 3761 im_delete_preedit(); 3762 3763 /* 3764 * Compute the end of the preediting area: "preedit_end_col". 3765 * According to the documentation of gtk_im_context_get_preedit_string(), 3766 * the cursor_pos output argument returns the offset in bytes. This is 3767 * unfortunately not true -- real life shows the offset is in characters, 3768 * and the GTK+ source code agrees with me. Will file a bug later. 3769 */ 3770 if (preedit_start_col != MAXCOL) 3771 preedit_end_col = preedit_start_col; 3772 str = (char_u *)preedit_string; 3773 for (p = str, i = 0; *p != NUL; p += utf_byte2len(*p), ++i) 3774 { 3775 int is_composing; 3776 3777 is_composing = ((*p & 0x80) != 0 && utf_iscomposing(utf_ptr2char(p))); 3778 /* 3779 * These offsets are used as counters when generating <BS> and <Del> 3780 * to delete the preedit string. So don't count composing characters 3781 * unless 'delcombine' is enabled. 3782 */ 3783 if (!is_composing || p_deco) 3784 { 3785 if (i < cursor_index) 3786 ++im_preedit_cursor; 3787 else 3788 ++im_preedit_trailing; 3789 } 3790 if (!is_composing && i >= cursor_index) 3791 { 3792 /* This is essentially the same as im_preedit_trailing, except 3793 * composing characters are not counted even if p_deco is set. */ 3794 ++num_move_back; 3795 } 3796 if (preedit_start_col != MAXCOL) 3797 preedit_end_col += utf_ptr2cells(p); 3798 } 3799 3800 if (p > str) 3801 { 3802 im_add_to_input(str, (int)(p - str)); 3803 im_correct_cursor(num_move_back); 3804 } 3805 3806 g_free(preedit_string); 3807 3808 if (gtk_main_level() > 0) 3809 gtk_main_quit(); 3810 } 3811 3812 /* 3813 * Translate the Pango attributes at iter to Vim highlighting attributes. 3814 * Ignore attributes not supported by Vim highlighting. This shouldn't have 3815 * too much impact -- right now we handle even more attributes than necessary 3816 * for the IM modules I tested with. 3817 */ 3818 static int 3819 translate_pango_attributes(PangoAttrIterator *iter) 3820 { 3821 PangoAttribute *attr; 3822 int char_attr = HL_NORMAL; 3823 3824 attr = pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE); 3825 if (attr != NULL && ((PangoAttrInt *)attr)->value 3826 != (int)PANGO_UNDERLINE_NONE) 3827 char_attr |= HL_UNDERLINE; 3828 3829 attr = pango_attr_iterator_get(iter, PANGO_ATTR_WEIGHT); 3830 if (attr != NULL && ((PangoAttrInt *)attr)->value >= (int)PANGO_WEIGHT_BOLD) 3831 char_attr |= HL_BOLD; 3832 3833 attr = pango_attr_iterator_get(iter, PANGO_ATTR_STYLE); 3834 if (attr != NULL && ((PangoAttrInt *)attr)->value 3835 != (int)PANGO_STYLE_NORMAL) 3836 char_attr |= HL_ITALIC; 3837 3838 attr = pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND); 3839 if (attr != NULL) 3840 { 3841 const PangoColor *color = &((PangoAttrColor *)attr)->color; 3842 3843 /* Assume inverse if black background is requested */ 3844 if ((color->red | color->green | color->blue) == 0) 3845 char_attr |= HL_INVERSE; 3846 } 3847 3848 return char_attr; 3849 } 3850 3851 /* 3852 * Retrieve the highlighting attributes at column col in the preedit string. 3853 * Return -1 if not in preediting mode or if col is out of range. 3854 */ 3855 int 3856 im_get_feedback_attr(int col) 3857 { 3858 char *preedit_string = NULL; 3859 PangoAttrList *attr_list = NULL; 3860 int char_attr = -1; 3861 3862 if (xic == NULL) 3863 return char_attr; 3864 3865 gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL); 3866 3867 if (preedit_string != NULL && attr_list != NULL) 3868 { 3869 int idx; 3870 3871 /* Get the byte index as used by PangoAttrIterator */ 3872 for (idx = 0; col > 0 && preedit_string[idx] != '\0'; --col) 3873 idx += utfc_ptr2len((char_u *)preedit_string + idx); 3874 3875 if (preedit_string[idx] != '\0') 3876 { 3877 PangoAttrIterator *iter; 3878 int start, end; 3879 3880 char_attr = HL_NORMAL; 3881 iter = pango_attr_list_get_iterator(attr_list); 3882 3883 /* Extract all relevant attributes from the list. */ 3884 do 3885 { 3886 pango_attr_iterator_range(iter, &start, &end); 3887 3888 if (idx >= start && idx < end) 3889 char_attr |= translate_pango_attributes(iter); 3890 } 3891 while (pango_attr_iterator_next(iter)); 3892 3893 pango_attr_iterator_destroy(iter); 3894 } 3895 } 3896 3897 if (attr_list != NULL) 3898 pango_attr_list_unref(attr_list); 3899 g_free(preedit_string); 3900 3901 return char_attr; 3902 } 3903 3904 void 3905 xim_init(void) 3906 { 3907 #ifdef XIM_DEBUG 3908 xim_log("xim_init()\n"); 3909 #endif 3910 3911 g_return_if_fail(gui.drawarea != NULL); 3912 g_return_if_fail(gui.drawarea->window != NULL); 3913 3914 xic = gtk_im_multicontext_new(); 3915 g_object_ref(xic); 3916 3917 im_commit_handler_id = g_signal_connect(G_OBJECT(xic), "commit", 3918 G_CALLBACK(&im_commit_cb), NULL); 3919 g_signal_connect(G_OBJECT(xic), "preedit_changed", 3920 G_CALLBACK(&im_preedit_changed_cb), NULL); 3921 g_signal_connect(G_OBJECT(xic), "preedit_start", 3922 G_CALLBACK(&im_preedit_start_cb), NULL); 3923 g_signal_connect(G_OBJECT(xic), "preedit_end", 3924 G_CALLBACK(&im_preedit_end_cb), NULL); 3925 3926 gtk_im_context_set_client_window(xic, gui.drawarea->window); 3927 } 3928 3929 void 3930 im_shutdown(void) 3931 { 3932 #ifdef XIM_DEBUG 3933 xim_log("im_shutdown()\n"); 3934 #endif 3935 3936 if (xic != NULL) 3937 { 3938 gtk_im_context_focus_out(xic); 3939 g_object_unref(xic); 3940 xic = NULL; 3941 } 3942 im_is_active = FALSE; 3943 im_commit_handler_id = 0; 3944 preedit_start_col = MAXCOL; 3945 xim_has_preediting = FALSE; 3946 } 3947 3948 /* 3949 * Convert the string argument to keyval and state for GdkEventKey. 3950 * If str is valid return TRUE, otherwise FALSE. 3951 * 3952 * See 'imactivatekey' for documentation of the format. 3953 */ 3954 static int 3955 im_string_to_keyval(const char *str, unsigned int *keyval, unsigned int *state) 3956 { 3957 const char *mods_end; 3958 unsigned tmp_keyval; 3959 unsigned tmp_state = 0; 3960 3961 mods_end = strrchr(str, '-'); 3962 mods_end = (mods_end != NULL) ? mods_end + 1 : str; 3963 3964 /* Parse modifier keys */ 3965 while (str < mods_end) 3966 switch (*str++) 3967 { 3968 case '-': break; 3969 case 'S': case 's': tmp_state |= (unsigned)GDK_SHIFT_MASK; break; 3970 case 'L': case 'l': tmp_state |= (unsigned)GDK_LOCK_MASK; break; 3971 case 'C': case 'c': tmp_state |= (unsigned)GDK_CONTROL_MASK;break; 3972 case '1': tmp_state |= (unsigned)GDK_MOD1_MASK; break; 3973 case '2': tmp_state |= (unsigned)GDK_MOD2_MASK; break; 3974 case '3': tmp_state |= (unsigned)GDK_MOD3_MASK; break; 3975 case '4': tmp_state |= (unsigned)GDK_MOD4_MASK; break; 3976 case '5': tmp_state |= (unsigned)GDK_MOD5_MASK; break; 3977 default: 3978 return FALSE; 3979 } 3980 3981 tmp_keyval = gdk_keyval_from_name(str); 3982 3983 if (tmp_keyval == 0 || tmp_keyval == GDK_VoidSymbol) 3984 return FALSE; 3985 3986 if (keyval != NULL) 3987 *keyval = tmp_keyval; 3988 if (state != NULL) 3989 *state = tmp_state; 3990 3991 return TRUE; 3992 } 3993 3994 /* 3995 * Return TRUE if p_imak is valid, otherwise FALSE. As a special case, an 3996 * empty string is also regarded as valid. 3997 * 3998 * Note: The numerical key value of p_imak is cached if it was valid; thus 3999 * boldly assuming im_xim_isvalid_imactivate() will always be called whenever 4000 * 'imak' changes. This is currently the case but not obvious -- should 4001 * probably rename the function for clarity. 4002 */ 4003 int 4004 im_xim_isvalid_imactivate(void) 4005 { 4006 if (p_imak[0] == NUL) 4007 { 4008 im_activatekey_keyval = GDK_VoidSymbol; 4009 im_activatekey_state = 0; 4010 return TRUE; 4011 } 4012 4013 return im_string_to_keyval((const char *)p_imak, 4014 &im_activatekey_keyval, 4015 &im_activatekey_state); 4016 } 4017 4018 static void 4019 im_synthesize_keypress(unsigned int keyval, unsigned int state) 4020 { 4021 GdkEventKey *event; 4022 4023 # ifdef HAVE_GTK_MULTIHEAD 4024 event = (GdkEventKey *)gdk_event_new(GDK_KEY_PRESS); 4025 g_object_ref(gui.drawarea->window); /* unreffed by gdk_event_free() */ 4026 # else 4027 event = (GdkEventKey *)g_malloc0((gulong)sizeof(GdkEvent)); 4028 event->type = GDK_KEY_PRESS; 4029 # endif 4030 event->window = gui.drawarea->window; 4031 event->send_event = TRUE; 4032 event->time = GDK_CURRENT_TIME; 4033 event->state = state; 4034 event->keyval = keyval; 4035 event->hardware_keycode = /* needed for XIM */ 4036 XKeysymToKeycode(GDK_WINDOW_XDISPLAY(event->window), (KeySym)keyval); 4037 event->length = 0; 4038 event->string = NULL; 4039 4040 gtk_im_context_filter_keypress(xic, event); 4041 4042 /* For consistency, also send the corresponding release event. */ 4043 event->type = GDK_KEY_RELEASE; 4044 event->send_event = FALSE; 4045 gtk_im_context_filter_keypress(xic, event); 4046 4047 # ifdef HAVE_GTK_MULTIHEAD 4048 gdk_event_free((GdkEvent *)event); 4049 # else 4050 g_free(event); 4051 # endif 4052 } 4053 4054 void 4055 xim_reset(void) 4056 { 4057 if (xic != NULL) 4058 { 4059 /* 4060 * The third-party imhangul module (and maybe others too) ignores 4061 * gtk_im_context_reset() or at least doesn't reset the active state. 4062 * Thus sending imactivatekey would turn it off if it was on before, 4063 * which is clearly not what we want. Fortunately we can work around 4064 * that for imhangul by sending GDK_Escape, but I don't know if it 4065 * works with all IM modules that support an activation key :/ 4066 * 4067 * An alternative approach would be to destroy the IM context and 4068 * recreate it. But that means loading/unloading the IM module on 4069 * every mode switch, which causes a quite noticable delay even on 4070 * my rather fast box... 4071 * * 4072 * Moreover, there are some XIM which cannot respond to 4073 * im_synthesize_keypress(). we hope that they reset by 4074 * xim_shutdown(). 4075 */ 4076 if (im_activatekey_keyval != GDK_VoidSymbol && im_is_active) 4077 im_synthesize_keypress(GDK_Escape, 0U); 4078 4079 gtk_im_context_reset(xic); 4080 4081 /* 4082 * HACK for Ami: This sequence of function calls makes Ami handle 4083 * the IM reset gratiously, without breaking loads of other stuff. 4084 * It seems to force English mode as well, which is exactly what we 4085 * want because it makes the Ami status display work reliably. 4086 */ 4087 gtk_im_context_set_use_preedit(xic, FALSE); 4088 4089 if (p_imdisable) 4090 im_shutdown(); 4091 else 4092 { 4093 gtk_im_context_set_use_preedit(xic, TRUE); 4094 xim_set_focus(gui.in_focus); 4095 4096 if (im_activatekey_keyval != GDK_VoidSymbol) 4097 { 4098 if (im_is_active) 4099 { 4100 g_signal_handler_block(xic, im_commit_handler_id); 4101 im_synthesize_keypress(im_activatekey_keyval, 4102 im_activatekey_state); 4103 g_signal_handler_unblock(xic, im_commit_handler_id); 4104 } 4105 } 4106 else 4107 { 4108 im_shutdown(); 4109 xim_init(); 4110 xim_set_focus(gui.in_focus); 4111 } 4112 } 4113 } 4114 4115 preedit_start_col = MAXCOL; 4116 xim_has_preediting = FALSE; 4117 } 4118 4119 int 4120 xim_queue_key_press_event(GdkEventKey *event, int down) 4121 { 4122 if (down) 4123 { 4124 /* 4125 * Workaround GTK2 XIM 'feature' that always converts keypad keys to 4126 * chars., even when not part of an IM sequence (ref. feature of 4127 * gdk/gdkkeyuni.c). 4128 * Flag any keypad keys that might represent a single char. 4129 * If this (on its own - i.e., not part of an IM sequence) is 4130 * committed while we're processing one of these keys, we can ignore 4131 * that commit and go ahead & process it ourselves. That way we can 4132 * still distinguish keypad keys for use in mappings. 4133 */ 4134 switch (event->keyval) 4135 { 4136 case GDK_KP_Add: xim_expected_char = '+'; break; 4137 case GDK_KP_Subtract: xim_expected_char = '-'; break; 4138 case GDK_KP_Divide: xim_expected_char = '/'; break; 4139 case GDK_KP_Multiply: xim_expected_char = '*'; break; 4140 case GDK_KP_Decimal: xim_expected_char = '.'; break; 4141 case GDK_KP_Equal: xim_expected_char = '='; break; 4142 case GDK_KP_0: xim_expected_char = '0'; break; 4143 case GDK_KP_1: xim_expected_char = '1'; break; 4144 case GDK_KP_2: xim_expected_char = '2'; break; 4145 case GDK_KP_3: xim_expected_char = '3'; break; 4146 case GDK_KP_4: xim_expected_char = '4'; break; 4147 case GDK_KP_5: xim_expected_char = '5'; break; 4148 case GDK_KP_6: xim_expected_char = '6'; break; 4149 case GDK_KP_7: xim_expected_char = '7'; break; 4150 case GDK_KP_8: xim_expected_char = '8'; break; 4151 case GDK_KP_9: xim_expected_char = '9'; break; 4152 default: xim_expected_char = NUL; 4153 } 4154 xim_ignored_char = FALSE; 4155 } 4156 4157 /* 4158 * When typing fFtT, XIM may be activated. Thus it must pass 4159 * gtk_im_context_filter_keypress() in Normal mode. 4160 * And while doing :sh too. 4161 */ 4162 if (xic != NULL && !p_imdisable 4163 && (State & (INSERT | CMDLINE | NORMAL | EXTERNCMD)) != 0) 4164 { 4165 /* 4166 * Filter 'imactivatekey' and map it to CTRL-^. This way, Vim is 4167 * always aware of the current status of IM, and can even emulate 4168 * the activation key for modules that don't support one. 4169 */ 4170 if (event->keyval == im_activatekey_keyval 4171 && (event->state & im_activatekey_state) == im_activatekey_state) 4172 { 4173 unsigned int state_mask; 4174 4175 /* Require the state of the 3 most used modifiers to match exactly. 4176 * Otherwise e.g. <S-C-space> would be unusable for other purposes 4177 * if the IM activate key is <S-space>. */ 4178 state_mask = im_activatekey_state; 4179 state_mask |= ((int)GDK_SHIFT_MASK | (int)GDK_CONTROL_MASK 4180 | (int)GDK_MOD1_MASK); 4181 4182 if ((event->state & state_mask) != im_activatekey_state) 4183 return FALSE; 4184 4185 /* Don't send it a second time on GDK_KEY_RELEASE. */ 4186 if (event->type != GDK_KEY_PRESS) 4187 return TRUE; 4188 4189 if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE)) 4190 { 4191 im_set_active(FALSE); 4192 4193 /* ":lmap" mappings exists, toggle use of mappings. */ 4194 State ^= LANGMAP; 4195 if (State & LANGMAP) 4196 { 4197 curbuf->b_p_iminsert = B_IMODE_NONE; 4198 State &= ~LANGMAP; 4199 } 4200 else 4201 { 4202 curbuf->b_p_iminsert = B_IMODE_LMAP; 4203 State |= LANGMAP; 4204 } 4205 return TRUE; 4206 } 4207 4208 return gtk_im_context_filter_keypress(xic, event); 4209 } 4210 4211 /* Don't filter events through the IM context if IM isn't active 4212 * right now. Unlike with GTK+ 1.2 we cannot rely on the IM module 4213 * not doing anything before the activation key was sent. */ 4214 if (im_activatekey_keyval == GDK_VoidSymbol || im_is_active) 4215 { 4216 int imresult = gtk_im_context_filter_keypress(xic, event); 4217 4218 /* Some XIM send following sequence: 4219 * 1. preedited string. 4220 * 2. committed string. 4221 * 3. line changed key. 4222 * 4. preedited string. 4223 * 5. remove preedited string. 4224 * if 3, Vim can't move back the above line for 5. 4225 * thus, this part should not parse the key. */ 4226 if (!imresult && preedit_start_col != MAXCOL 4227 && event->keyval == GDK_Return) 4228 { 4229 im_synthesize_keypress(GDK_Return, 0U); 4230 return FALSE; 4231 } 4232 4233 /* If XIM tried to commit a keypad key as a single char., 4234 * ignore it so we can use the keypad key 'raw', for mappings. */ 4235 if (xim_expected_char != NUL && xim_ignored_char) 4236 /* We had a keypad key, and XIM tried to thieve it */ 4237 return FALSE; 4238 4239 /* Normal processing */ 4240 return imresult; 4241 } 4242 } 4243 4244 return FALSE; 4245 } 4246 4247 int 4248 im_get_status(void) 4249 { 4250 return im_is_active; 4251 } 4252 4253 # else /* !HAVE_GTK2 */ 4254 4255 static int xim_is_active = FALSE; /* XIM should be active in the current 4256 mode */ 4257 static int xim_has_focus = FALSE; /* XIM is really being used for Vim */ 4258 #ifdef FEAT_GUI_X11 4259 static XIMStyle input_style; 4260 static int status_area_enabled = TRUE; 4261 #endif 4262 4263 #ifdef FEAT_GUI_GTK 4264 # ifdef WIN3264 4265 # include <gdk/gdkwin32.h> 4266 # else 4267 # include <gdk/gdkx.h> 4268 # endif 4269 #else 4270 # ifdef PROTO 4271 /* Define a few things to be able to generate prototypes while not configured 4272 * for GTK. */ 4273 # define GSList int 4274 # define gboolean int 4275 typedef int GdkEvent; 4276 typedef int GdkEventKey; 4277 # define GdkIC int 4278 # endif 4279 #endif 4280 4281 #if defined(FEAT_GUI_GTK) || defined(PROTO) 4282 static int preedit_buf_len = 0; 4283 static int xim_can_preediting INIT(= FALSE); /* XIM in showmode() */ 4284 static int xim_input_style; 4285 #ifndef FEAT_GUI_GTK 4286 # define gboolean int 4287 #endif 4288 static gboolean use_status_area = 0; 4289 4290 static int im_xim_str2keycode __ARGS((unsigned int *code, unsigned int *state)); 4291 static void im_xim_send_event_imactivate __ARGS((void)); 4292 4293 /* 4294 * Convert string to keycode and state for XKeyEvent. 4295 * When string is valid return OK, when invalid return FAIL. 4296 * 4297 * See 'imactivatekey' documentation for the format. 4298 */ 4299 static int 4300 im_xim_str2keycode(code, state) 4301 unsigned int *code; 4302 unsigned int *state; 4303 { 4304 int retval = OK; 4305 int len; 4306 unsigned keycode = 0, keystate = 0; 4307 Window window; 4308 Display *display; 4309 char_u *flag_end; 4310 char_u *str; 4311 4312 if (*p_imak != NUL) 4313 { 4314 len = STRLEN(p_imak); 4315 for (flag_end = p_imak + len - 1; 4316 flag_end > p_imak && *flag_end != '-'; --flag_end) 4317 ; 4318 4319 /* Parse modifier keys */ 4320 for (str = p_imak; str < flag_end; ++str) 4321 { 4322 switch (*str) 4323 { 4324 case 's': case 'S': 4325 keystate |= ShiftMask; 4326 break; 4327 case 'l': case 'L': 4328 keystate |= LockMask; 4329 break; 4330 case 'c': case 'C': 4331 keystate |= ControlMask; 4332 break; 4333 case '1': 4334 keystate |= Mod1Mask; 4335 break; 4336 case '2': 4337 keystate |= Mod2Mask; 4338 break; 4339 case '3': 4340 keystate |= Mod3Mask; 4341 break; 4342 case '4': 4343 keystate |= Mod4Mask; 4344 break; 4345 case '5': 4346 keystate |= Mod5Mask; 4347 break; 4348 case '-': 4349 break; 4350 default: 4351 retval = FAIL; 4352 } 4353 } 4354 if (*str == '-') 4355 ++str; 4356 4357 /* Get keycode from string. */ 4358 gui_get_x11_windis(&window, &display); 4359 if (display) 4360 keycode = XKeysymToKeycode(display, XStringToKeysym((char *)str)); 4361 if (keycode == 0) 4362 retval = FAIL; 4363 4364 if (code != NULL) 4365 *code = keycode; 4366 if (state != NULL) 4367 *state = keystate; 4368 } 4369 return retval; 4370 } 4371 4372 static void 4373 im_xim_send_event_imactivate() 4374 { 4375 /* Force turn on preedit state by symulate keypress event. 4376 * Keycode and state is specified by 'imactivatekey'. 4377 */ 4378 XKeyEvent ev; 4379 4380 gui_get_x11_windis(&ev.window, &ev.display); 4381 ev.root = RootWindow(ev.display, DefaultScreen(ev.display)); 4382 ev.subwindow = None; 4383 ev.time = CurrentTime; 4384 ev.x = 1; 4385 ev.y = 1; 4386 ev.x_root = 1; 4387 ev.y_root = 1; 4388 ev.same_screen = 1; 4389 ev.type = KeyPress; 4390 if (im_xim_str2keycode(&ev.keycode, &ev.state) == OK) 4391 XSendEvent(ev.display, ev.window, 1, KeyPressMask, (XEvent*)&ev); 4392 } 4393 4394 /* 4395 * Return TRUE if 'imactivatekey' has a valid value. 4396 */ 4397 int 4398 im_xim_isvalid_imactivate() 4399 { 4400 return im_xim_str2keycode(NULL, NULL) == OK; 4401 } 4402 #endif /* FEAT_GUI_GTK */ 4403 4404 /* 4405 * Switch using XIM on/off. This is used by the code that changes "State". 4406 */ 4407 void 4408 im_set_active(active) 4409 int active; 4410 { 4411 if (xic == NULL) 4412 return; 4413 4414 /* If 'imdisable' is set, XIM is never active. */ 4415 if (p_imdisable) 4416 active = FALSE; 4417 #if !defined (FEAT_GUI_GTK) 4418 else if (input_style & XIMPreeditPosition) 4419 /* There is a problem in switching XIM off when preediting is used, 4420 * and it is not clear how this can be solved. For now, keep XIM on 4421 * all the time, like it was done in Vim 5.8. */ 4422 active = TRUE; 4423 #endif 4424 4425 /* Remember the active state, it is needed when Vim gets keyboard focus. */ 4426 xim_is_active = active; 4427 4428 #ifdef FEAT_GUI_GTK 4429 /* When 'imactivatekey' has valid key-string, try to control XIM preedit 4430 * state. When 'imactivatekey' has no or invalid string, try old XIM 4431 * focus control. 4432 */ 4433 if (*p_imak != NUL) 4434 { 4435 /* BASIC STRATEGY: 4436 * Destroy old Input Context (XIC), and create new one. New XIC 4437 * would have a state of preedit that is off. When argument:active 4438 * is false, that's all. Else argument:active is true, send a key 4439 * event specified by 'imactivatekey' to activate XIM preedit state. 4440 */ 4441 4442 xim_is_active = TRUE; /* Disable old XIM focus control */ 4443 /* If we can monitor preedit state with preedit callback functions, 4444 * try least creation of new XIC. 4445 */ 4446 if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS) 4447 { 4448 if (xim_can_preediting && !active) 4449 { 4450 /* Force turn off preedit state. With some IM 4451 * implementations, we cannot turn off preedit state by 4452 * symulate keypress event. It is why using such a method 4453 * that destroy old IC (input context), and create new one. 4454 * When create new IC, its preedit state is usually off. 4455 */ 4456 xim_reset(); 4457 xim_set_focus(FALSE); 4458 gdk_ic_destroy(xic); 4459 xim_init(); 4460 xim_can_preediting = FALSE; 4461 } 4462 else if (!xim_can_preediting && active) 4463 im_xim_send_event_imactivate(); 4464 } 4465 else 4466 { 4467 /* First, force destroy old IC, and create new one. It 4468 * symulates "turning off preedit state". 4469 */ 4470 xim_set_focus(FALSE); 4471 gdk_ic_destroy(xic); 4472 xim_init(); 4473 xim_can_preediting = FALSE; 4474 4475 /* 2nd, when requested to activate IM, symulate this by sending 4476 * the event. 4477 */ 4478 if (active) 4479 { 4480 im_xim_send_event_imactivate(); 4481 xim_can_preediting = TRUE; 4482 } 4483 } 4484 } 4485 else 4486 { 4487 # ifndef XIMPreeditUnKnown 4488 /* X11R5 doesn't have these, it looks safe enough to define here. */ 4489 typedef unsigned long XIMPreeditState; 4490 # define XIMPreeditUnKnown 0L 4491 # define XIMPreeditEnable 1L 4492 # define XIMPreeditDisable (1L<<1) 4493 # define XNPreeditState "preeditState" 4494 # endif 4495 XIMPreeditState preedit_state = XIMPreeditUnKnown; 4496 XVaNestedList preedit_attr; 4497 XIC pxic; 4498 4499 preedit_attr = XVaCreateNestedList(0, 4500 XNPreeditState, &preedit_state, 4501 NULL); 4502 pxic = ((GdkICPrivate *)xic)->xic; 4503 4504 if (!XGetICValues(pxic, XNPreeditAttributes, preedit_attr, NULL)) 4505 { 4506 XFree(preedit_attr); 4507 preedit_attr = XVaCreateNestedList(0, 4508 XNPreeditState, 4509 active ? XIMPreeditEnable : XIMPreeditDisable, 4510 NULL); 4511 XSetICValues(pxic, XNPreeditAttributes, preedit_attr, NULL); 4512 xim_can_preediting = active; 4513 xim_is_active = active; 4514 } 4515 XFree(preedit_attr); 4516 } 4517 if (xim_input_style & XIMPreeditCallbacks) 4518 { 4519 preedit_buf_len = 0; 4520 init_preedit_start_col(); 4521 } 4522 #else 4523 # if 0 4524 /* When had tested kinput2 + canna + Athena GUI version with 4525 * 'imactivatekey' is "s-space", im_xim_send_event_imactivate() did not 4526 * work correctly. It just inserted one space. I don't know why we 4527 * couldn't switch state of XIM preediting. This is reason why these 4528 * codes are commented out. 4529 */ 4530 /* First, force destroy old IC, and create new one. It symulates 4531 * "turning off preedit state". 4532 */ 4533 xim_set_focus(FALSE); 4534 XDestroyIC(xic); 4535 xic = NULL; 4536 xim_init(); 4537 4538 /* 2nd, when requested to activate IM, symulate this by sending the 4539 * event. 4540 */ 4541 if (active) 4542 im_xim_send_event_imactivate(); 4543 # endif 4544 #endif 4545 xim_set_preedit(); 4546 } 4547 4548 /* 4549 * Adjust using XIM for gaining or losing keyboard focus. Also called when 4550 * "xim_is_active" changes. 4551 */ 4552 void 4553 xim_set_focus(focus) 4554 int focus; 4555 { 4556 if (xic == NULL) 4557 return; 4558 4559 /* 4560 * XIM only gets focus when the Vim window has keyboard focus and XIM has 4561 * been set active for the current mode. 4562 */ 4563 if (focus && xim_is_active) 4564 { 4565 if (!xim_has_focus) 4566 { 4567 xim_has_focus = TRUE; 4568 #ifdef FEAT_GUI_GTK 4569 gdk_im_begin(xic, gui.drawarea->window); 4570 #else 4571 XSetICFocus(xic); 4572 #endif 4573 } 4574 } 4575 else 4576 { 4577 if (xim_has_focus) 4578 { 4579 xim_has_focus = FALSE; 4580 #ifdef FEAT_GUI_GTK 4581 gdk_im_end(); 4582 #else 4583 XUnsetICFocus(xic); 4584 #endif 4585 } 4586 } 4587 } 4588 4589 /*ARGSUSED*/ 4590 void 4591 im_set_position(row, col) 4592 int row; 4593 int col; 4594 { 4595 xim_set_preedit(); 4596 } 4597 4598 /* 4599 * Set the XIM to the current cursor position. 4600 */ 4601 void 4602 xim_set_preedit() 4603 { 4604 if (xic == NULL) 4605 return; 4606 4607 xim_set_focus(TRUE); 4608 4609 #ifdef FEAT_GUI_GTK 4610 if (gdk_im_ready()) 4611 { 4612 int attrmask; 4613 GdkICAttr *attr; 4614 4615 if (!xic_attr) 4616 return; 4617 4618 attr = xic_attr; 4619 attrmask = 0; 4620 4621 # ifdef FEAT_XFONTSET 4622 if ((xim_input_style & (int)GDK_IM_PREEDIT_POSITION) 4623 && gui.fontset != NOFONTSET 4624 && gui.fontset->type == GDK_FONT_FONTSET) 4625 { 4626 if (!xim_has_focus) 4627 { 4628 if (attr->spot_location.y >= 0) 4629 { 4630 attr->spot_location.x = 0; 4631 attr->spot_location.y = -100; 4632 attrmask |= (int)GDK_IC_SPOT_LOCATION; 4633 } 4634 } 4635 else 4636 { 4637 gint width, height; 4638 4639 if (attr->spot_location.x != TEXT_X(gui.col) 4640 || attr->spot_location.y != TEXT_Y(gui.row)) 4641 { 4642 attr->spot_location.x = TEXT_X(gui.col); 4643 attr->spot_location.y = TEXT_Y(gui.row); 4644 attrmask |= (int)GDK_IC_SPOT_LOCATION; 4645 } 4646 4647 gdk_window_get_size(gui.drawarea->window, &width, &height); 4648 width -= 2 * gui.border_offset; 4649 height -= 2 * gui.border_offset; 4650 if (xim_input_style & (int)GDK_IM_STATUS_AREA) 4651 height -= gui.char_height; 4652 if (attr->preedit_area.width != width 4653 || attr->preedit_area.height != height) 4654 { 4655 attr->preedit_area.x = gui.border_offset; 4656 attr->preedit_area.y = gui.border_offset; 4657 attr->preedit_area.width = width; 4658 attr->preedit_area.height = height; 4659 attrmask |= (int)GDK_IC_PREEDIT_AREA; 4660 } 4661 4662 if (attr->preedit_fontset != gui.current_font) 4663 { 4664 attr->preedit_fontset = gui.current_font; 4665 attrmask |= (int)GDK_IC_PREEDIT_FONTSET; 4666 } 4667 } 4668 } 4669 # endif /* FEAT_XFONTSET */ 4670 4671 if (xim_fg_color == INVALCOLOR) 4672 { 4673 xim_fg_color = gui.def_norm_pixel; 4674 xim_bg_color = gui.def_back_pixel; 4675 } 4676 if (attr->preedit_foreground.pixel != xim_fg_color) 4677 { 4678 attr->preedit_foreground.pixel = xim_fg_color; 4679 attrmask |= (int)GDK_IC_PREEDIT_FOREGROUND; 4680 } 4681 if (attr->preedit_background.pixel != xim_bg_color) 4682 { 4683 attr->preedit_background.pixel = xim_bg_color; 4684 attrmask |= (int)GDK_IC_PREEDIT_BACKGROUND; 4685 } 4686 4687 if (attrmask != 0) 4688 gdk_ic_set_attr(xic, attr, (GdkICAttributesType)attrmask); 4689 } 4690 #else /* FEAT_GUI_GTK */ 4691 { 4692 XVaNestedList attr_list; 4693 XRectangle spot_area; 4694 XPoint over_spot; 4695 int line_space; 4696 4697 if (!xim_has_focus) 4698 { 4699 /* hide XIM cursor */ 4700 over_spot.x = 0; 4701 over_spot.y = -100; /* arbitrary invisible position */ 4702 attr_list = (XVaNestedList) XVaCreateNestedList(0, 4703 XNSpotLocation, 4704 &over_spot, 4705 NULL); 4706 XSetICValues(xic, XNPreeditAttributes, attr_list, NULL); 4707 XFree(attr_list); 4708 return; 4709 } 4710 4711 if (input_style & XIMPreeditPosition) 4712 { 4713 if (xim_fg_color == INVALCOLOR) 4714 { 4715 xim_fg_color = gui.def_norm_pixel; 4716 xim_bg_color = gui.def_back_pixel; 4717 } 4718 over_spot.x = TEXT_X(gui.col); 4719 over_spot.y = TEXT_Y(gui.row); 4720 spot_area.x = 0; 4721 spot_area.y = 0; 4722 spot_area.height = gui.char_height * Rows; 4723 spot_area.width = gui.char_width * Columns; 4724 line_space = gui.char_height; 4725 attr_list = (XVaNestedList) XVaCreateNestedList(0, 4726 XNSpotLocation, &over_spot, 4727 XNForeground, (Pixel) xim_fg_color, 4728 XNBackground, (Pixel) xim_bg_color, 4729 XNArea, &spot_area, 4730 XNLineSpace, line_space, 4731 NULL); 4732 if (XSetICValues(xic, XNPreeditAttributes, attr_list, NULL)) 4733 EMSG(_("E284: Cannot set IC values")); 4734 XFree(attr_list); 4735 } 4736 } 4737 #endif /* FEAT_GUI_GTK */ 4738 } 4739 4740 /* 4741 * Set up the status area. 4742 * 4743 * This should use a separate Widget, but that seems not possible, because 4744 * preedit_area and status_area should be set to the same window as for the 4745 * text input. Unfortunately this means the status area pollutes the text 4746 * window... 4747 */ 4748 void 4749 xim_set_status_area() 4750 { 4751 if (xic == NULL) 4752 return; 4753 4754 #ifdef FEAT_GUI_GTK 4755 # if defined(FEAT_XFONTSET) 4756 if (use_status_area) 4757 { 4758 GdkICAttr *attr; 4759 int style; 4760 gint width, height; 4761 GtkWidget *widget; 4762 int attrmask; 4763 4764 if (!xic_attr) 4765 return; 4766 4767 attr = xic_attr; 4768 attrmask = 0; 4769 style = (int)gdk_ic_get_style(xic); 4770 if ((style & (int)GDK_IM_STATUS_MASK) == (int)GDK_IM_STATUS_AREA) 4771 { 4772 if (gui.fontset != NOFONTSET 4773 && gui.fontset->type == GDK_FONT_FONTSET) 4774 { 4775 widget = gui.mainwin; 4776 gdk_window_get_size(widget->window, &width, &height); 4777 4778 attrmask |= (int)GDK_IC_STATUS_AREA; 4779 attr->status_area.x = 0; 4780 attr->status_area.y = height - gui.char_height - 1; 4781 attr->status_area.width = width; 4782 attr->status_area.height = gui.char_height; 4783 } 4784 } 4785 if (attrmask != 0) 4786 gdk_ic_set_attr(xic, attr, (GdkICAttributesType)attrmask); 4787 } 4788 # endif 4789 #else 4790 { 4791 XVaNestedList preedit_list = 0, status_list = 0, list = 0; 4792 XRectangle pre_area, status_area; 4793 4794 if (input_style & XIMStatusArea) 4795 { 4796 if (input_style & XIMPreeditArea) 4797 { 4798 XRectangle *needed_rect; 4799 4800 /* to get status_area width */ 4801 status_list = XVaCreateNestedList(0, XNAreaNeeded, 4802 &needed_rect, NULL); 4803 XGetICValues(xic, XNStatusAttributes, status_list, NULL); 4804 XFree(status_list); 4805 4806 status_area.width = needed_rect->width; 4807 } 4808 else 4809 status_area.width = gui.char_width * Columns; 4810 4811 status_area.x = 0; 4812 status_area.y = gui.char_height * Rows + gui.border_offset; 4813 if (gui.which_scrollbars[SBAR_BOTTOM]) 4814 status_area.y += gui.scrollbar_height; 4815 #ifdef FEAT_MENU 4816 if (gui.menu_is_active) 4817 status_area.y += gui.menu_height; 4818 #endif 4819 status_area.height = gui.char_height; 4820 status_list = XVaCreateNestedList(0, XNArea, &status_area, NULL); 4821 } 4822 else 4823 { 4824 status_area.x = 0; 4825 status_area.y = gui.char_height * Rows + gui.border_offset; 4826 if (gui.which_scrollbars[SBAR_BOTTOM]) 4827 status_area.y += gui.scrollbar_height; 4828 #ifdef FEAT_MENU 4829 if (gui.menu_is_active) 4830 status_area.y += gui.menu_height; 4831 #endif 4832 status_area.width = 0; 4833 status_area.height = gui.char_height; 4834 } 4835 4836 if (input_style & XIMPreeditArea) /* off-the-spot */ 4837 { 4838 pre_area.x = status_area.x + status_area.width; 4839 pre_area.y = gui.char_height * Rows + gui.border_offset; 4840 pre_area.width = gui.char_width * Columns - pre_area.x; 4841 if (gui.which_scrollbars[SBAR_BOTTOM]) 4842 pre_area.y += gui.scrollbar_height; 4843 #ifdef FEAT_MENU 4844 if (gui.menu_is_active) 4845 pre_area.y += gui.menu_height; 4846 #endif 4847 pre_area.height = gui.char_height; 4848 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL); 4849 } 4850 else if (input_style & XIMPreeditPosition) /* over-the-spot */ 4851 { 4852 pre_area.x = 0; 4853 pre_area.y = 0; 4854 pre_area.height = gui.char_height * Rows; 4855 pre_area.width = gui.char_width * Columns; 4856 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL); 4857 } 4858 4859 if (preedit_list && status_list) 4860 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list, 4861 XNStatusAttributes, status_list, NULL); 4862 else if (preedit_list) 4863 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list, 4864 NULL); 4865 else if (status_list) 4866 list = XVaCreateNestedList(0, XNStatusAttributes, status_list, 4867 NULL); 4868 else 4869 list = NULL; 4870 4871 if (list) 4872 { 4873 XSetICValues(xic, XNVaNestedList, list, NULL); 4874 XFree(list); 4875 } 4876 if (status_list) 4877 XFree(status_list); 4878 if (preedit_list) 4879 XFree(preedit_list); 4880 } 4881 #endif 4882 } 4883 4884 #if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK) 4885 static char e_xim[] = N_("E285: Failed to create input context"); 4886 #endif 4887 4888 #if defined(FEAT_GUI_X11) || defined(PROTO) 4889 # if defined(XtSpecificationRelease) && XtSpecificationRelease >= 6 && !defined(sun) 4890 # define USE_X11R6_XIM 4891 # endif 4892 4893 static int xim_real_init __ARGS((Window x11_window, Display *x11_display)); 4894 4895 4896 #ifdef USE_X11R6_XIM 4897 static void xim_instantiate_cb __ARGS((Display *display, XPointer client_data, XPointer call_data)); 4898 static void xim_destroy_cb __ARGS((XIM im, XPointer client_data, XPointer call_data)); 4899 4900 /*ARGSUSED*/ 4901 static void 4902 xim_instantiate_cb(display, client_data, call_data) 4903 Display *display; 4904 XPointer client_data; 4905 XPointer call_data; 4906 { 4907 Window x11_window; 4908 Display *x11_display; 4909 4910 #ifdef XIM_DEBUG 4911 xim_log("xim_instantiate_cb()\n"); 4912 #endif 4913 4914 gui_get_x11_windis(&x11_window, &x11_display); 4915 if (display != x11_display) 4916 return; 4917 4918 xim_real_init(x11_window, x11_display); 4919 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 4920 if (xic != NULL) 4921 XUnregisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, 4922 xim_instantiate_cb, NULL); 4923 } 4924 4925 /*ARGSUSED*/ 4926 static void 4927 xim_destroy_cb(im, client_data, call_data) 4928 XIM im; 4929 XPointer client_data; 4930 XPointer call_data; 4931 { 4932 Window x11_window; 4933 Display *x11_display; 4934 4935 #ifdef XIM_DEBUG 4936 xim_log("xim_destroy_cb()\n"); 4937 #endif 4938 gui_get_x11_windis(&x11_window, &x11_display); 4939 4940 xic = NULL; 4941 status_area_enabled = FALSE; 4942 4943 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 4944 4945 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, 4946 xim_instantiate_cb, NULL); 4947 } 4948 #endif 4949 4950 void 4951 xim_init() 4952 { 4953 Window x11_window; 4954 Display *x11_display; 4955 4956 #ifdef XIM_DEBUG 4957 xim_log("xim_init()\n"); 4958 #endif 4959 4960 gui_get_x11_windis(&x11_window, &x11_display); 4961 4962 xic = NULL; 4963 4964 if (xim_real_init(x11_window, x11_display)) 4965 return; 4966 4967 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 4968 4969 #ifdef USE_X11R6_XIM 4970 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, 4971 xim_instantiate_cb, NULL); 4972 #endif 4973 } 4974 4975 static int 4976 xim_real_init(x11_window, x11_display) 4977 Window x11_window; 4978 Display *x11_display; 4979 { 4980 int i; 4981 char *p, 4982 *s, 4983 *ns, 4984 *end, 4985 tmp[1024]; 4986 #define IMLEN_MAX 40 4987 char buf[IMLEN_MAX + 7]; 4988 XIM xim = NULL; 4989 XIMStyles *xim_styles; 4990 XIMStyle this_input_style = 0; 4991 Boolean found; 4992 XPoint over_spot; 4993 XVaNestedList preedit_list, status_list; 4994 4995 input_style = 0; 4996 status_area_enabled = FALSE; 4997 4998 if (xic != NULL) 4999 return FALSE; 5000 5001 if (gui.rsrc_input_method != NULL && *gui.rsrc_input_method != NUL) 5002 { 5003 strcpy(tmp, gui.rsrc_input_method); 5004 for (ns = s = tmp; ns != NULL && *s != NUL;) 5005 { 5006 s = (char *)skipwhite((char_u *)s); 5007 if (*s == NUL) 5008 break; 5009 if ((ns = end = strchr(s, ',')) == NULL) 5010 end = s + strlen(s); 5011 while (isspace(((char_u *)end)[-1])) 5012 end--; 5013 *end = NUL; 5014 5015 if (strlen(s) <= IMLEN_MAX) 5016 { 5017 strcpy(buf, "@im="); 5018 strcat(buf, s); 5019 if ((p = XSetLocaleModifiers(buf)) != NULL && *p != NUL 5020 && (xim = XOpenIM(x11_display, NULL, NULL, NULL)) 5021 != NULL) 5022 break; 5023 } 5024 5025 s = ns + 1; 5026 } 5027 } 5028 5029 if (xim == NULL && (p = XSetLocaleModifiers("")) != NULL && *p != NUL) 5030 xim = XOpenIM(x11_display, NULL, NULL, NULL); 5031 5032 /* This is supposed to be useful to obtain characters through 5033 * XmbLookupString() without really using a XIM. */ 5034 if (xim == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL 5035 && *p != NUL) 5036 xim = XOpenIM(x11_display, NULL, NULL, NULL); 5037 5038 if (xim == NULL) 5039 { 5040 /* Only give this message when verbose is set, because too many people 5041 * got this message when they didn't want to use a XIM. */ 5042 if (p_verbose > 0) 5043 { 5044 verbose_enter(); 5045 EMSG(_("E286: Failed to open input method")); 5046 verbose_leave(); 5047 } 5048 return FALSE; 5049 } 5050 5051 #ifdef USE_X11R6_XIM 5052 { 5053 XIMCallback destroy_cb; 5054 5055 destroy_cb.callback = xim_destroy_cb; 5056 destroy_cb.client_data = NULL; 5057 if (XSetIMValues(xim, XNDestroyCallback, &destroy_cb, NULL)) 5058 EMSG(_("E287: Warning: Could not set destroy callback to IM")); 5059 } 5060 #endif 5061 5062 if (XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL) || !xim_styles) 5063 { 5064 EMSG(_("E288: input method doesn't support any style")); 5065 XCloseIM(xim); 5066 return FALSE; 5067 } 5068 5069 found = False; 5070 strcpy(tmp, gui.rsrc_preedit_type_name); 5071 for (s = tmp; s && !found; ) 5072 { 5073 while (*s && isspace((unsigned char)*s)) 5074 s++; 5075 if (!*s) 5076 break; 5077 if ((ns = end = strchr(s, ',')) != 0) 5078 ns++; 5079 else 5080 end = s + strlen(s); 5081 while (isspace((unsigned char)*end)) 5082 end--; 5083 *end = '\0'; 5084 5085 if (!strcmp(s, "OverTheSpot")) 5086 this_input_style = (XIMPreeditPosition | XIMStatusArea); 5087 else if (!strcmp(s, "OffTheSpot")) 5088 this_input_style = (XIMPreeditArea | XIMStatusArea); 5089 else if (!strcmp(s, "Root")) 5090 this_input_style = (XIMPreeditNothing | XIMStatusNothing); 5091 5092 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++) 5093 { 5094 if (this_input_style == xim_styles->supported_styles[i]) 5095 { 5096 found = True; 5097 break; 5098 } 5099 } 5100 if (!found) 5101 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++) 5102 { 5103 if ((xim_styles->supported_styles[i] & this_input_style) 5104 == (this_input_style & ~XIMStatusArea)) 5105 { 5106 this_input_style &= ~XIMStatusArea; 5107 found = True; 5108 break; 5109 } 5110 } 5111 5112 s = ns; 5113 } 5114 XFree(xim_styles); 5115 5116 if (!found) 5117 { 5118 /* Only give this message when verbose is set, because too many people 5119 * got this message when they didn't want to use a XIM. */ 5120 if (p_verbose > 0) 5121 { 5122 verbose_enter(); 5123 EMSG(_("E289: input method doesn't support my preedit type")); 5124 verbose_leave(); 5125 } 5126 XCloseIM(xim); 5127 return FALSE; 5128 } 5129 5130 over_spot.x = TEXT_X(gui.col); 5131 over_spot.y = TEXT_Y(gui.row); 5132 input_style = this_input_style; 5133 5134 /* A crash was reported when trying to pass gui.norm_font as XNFontSet, 5135 * thus that has been removed. Hopefully the default works... */ 5136 #ifdef FEAT_XFONTSET 5137 if (gui.fontset != NOFONTSET) 5138 { 5139 preedit_list = XVaCreateNestedList(0, 5140 XNSpotLocation, &over_spot, 5141 XNForeground, (Pixel)gui.def_norm_pixel, 5142 XNBackground, (Pixel)gui.def_back_pixel, 5143 XNFontSet, (XFontSet)gui.fontset, 5144 NULL); 5145 status_list = XVaCreateNestedList(0, 5146 XNForeground, (Pixel)gui.def_norm_pixel, 5147 XNBackground, (Pixel)gui.def_back_pixel, 5148 XNFontSet, (XFontSet)gui.fontset, 5149 NULL); 5150 } 5151 else 5152 #endif 5153 { 5154 preedit_list = XVaCreateNestedList(0, 5155 XNSpotLocation, &over_spot, 5156 XNForeground, (Pixel)gui.def_norm_pixel, 5157 XNBackground, (Pixel)gui.def_back_pixel, 5158 NULL); 5159 status_list = XVaCreateNestedList(0, 5160 XNForeground, (Pixel)gui.def_norm_pixel, 5161 XNBackground, (Pixel)gui.def_back_pixel, 5162 NULL); 5163 } 5164 5165 xic = XCreateIC(xim, 5166 XNInputStyle, input_style, 5167 XNClientWindow, x11_window, 5168 XNFocusWindow, gui.wid, 5169 XNPreeditAttributes, preedit_list, 5170 XNStatusAttributes, status_list, 5171 NULL); 5172 XFree(status_list); 5173 XFree(preedit_list); 5174 if (xic != NULL) 5175 { 5176 if (input_style & XIMStatusArea) 5177 { 5178 xim_set_status_area(); 5179 status_area_enabled = TRUE; 5180 } 5181 else 5182 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 5183 } 5184 else 5185 { 5186 EMSG(_(e_xim)); 5187 XCloseIM(xim); 5188 return FALSE; 5189 } 5190 5191 return TRUE; 5192 } 5193 5194 #endif /* FEAT_GUI_X11 */ 5195 5196 #if defined(FEAT_GUI_GTK) || defined(PROTO) 5197 5198 # ifdef FEAT_XFONTSET 5199 static char e_overthespot[] = N_("E290: over-the-spot style requires fontset"); 5200 # endif 5201 5202 # ifdef PROTO 5203 typedef int GdkIC; 5204 # endif 5205 5206 void 5207 xim_decide_input_style() 5208 { 5209 /* GDK_IM_STATUS_CALLBACKS was disabled, enabled it to allow Japanese 5210 * OverTheSpot. */ 5211 int supported_style = (int)GDK_IM_PREEDIT_NONE | 5212 (int)GDK_IM_PREEDIT_NOTHING | 5213 (int)GDK_IM_PREEDIT_POSITION | 5214 (int)GDK_IM_PREEDIT_CALLBACKS | 5215 (int)GDK_IM_STATUS_CALLBACKS | 5216 (int)GDK_IM_STATUS_AREA | 5217 (int)GDK_IM_STATUS_NONE | 5218 (int)GDK_IM_STATUS_NOTHING; 5219 5220 #ifdef XIM_DEBUG 5221 xim_log("xim_decide_input_style()\n"); 5222 #endif 5223 5224 if (!gdk_im_ready()) 5225 xim_input_style = 0; 5226 else 5227 { 5228 if (gtk_major_version > 1 5229 || (gtk_major_version == 1 5230 && (gtk_minor_version > 2 5231 || (gtk_minor_version == 2 && gtk_micro_version >= 3)))) 5232 use_status_area = TRUE; 5233 else 5234 { 5235 EMSG(_("E291: Your GTK+ is older than 1.2.3. Status area disabled")); 5236 use_status_area = FALSE; 5237 } 5238 #ifdef FEAT_XFONTSET 5239 if (gui.fontset == NOFONTSET || gui.fontset->type != GDK_FONT_FONTSET) 5240 #endif 5241 supported_style &= ~((int)GDK_IM_PREEDIT_POSITION 5242 | (int)GDK_IM_STATUS_AREA); 5243 if (!use_status_area) 5244 supported_style &= ~(int)GDK_IM_STATUS_AREA; 5245 xim_input_style = (int)gdk_im_decide_style((GdkIMStyle)supported_style); 5246 } 5247 } 5248 5249 /*ARGSUSED*/ 5250 static void 5251 preedit_start_cbproc(XIC xic, XPointer client_data, XPointer call_data) 5252 { 5253 #ifdef XIM_DEBUG 5254 xim_log("xim_decide_input_style()\n"); 5255 #endif 5256 5257 draw_feedback = NULL; 5258 xim_can_preediting = TRUE; 5259 xim_has_preediting = TRUE; 5260 gui_update_cursor(TRUE, FALSE); 5261 if (showmode() > 0) 5262 { 5263 setcursor(); 5264 out_flush(); 5265 } 5266 } 5267 5268 static void 5269 xim_back_delete(int n) 5270 { 5271 char_u str[3]; 5272 5273 str[0] = CSI; 5274 str[1] = 'k'; 5275 str[2] = 'b'; 5276 while (n-- > 0) 5277 add_to_input_buf(str, 3); 5278 } 5279 5280 static GSList *key_press_event_queue = NULL; 5281 static gboolean processing_queued_event = FALSE; 5282 5283 /*ARGSUSED*/ 5284 static void 5285 preedit_draw_cbproc(XIC xic, XPointer client_data, XPointer call_data) 5286 { 5287 XIMPreeditDrawCallbackStruct *draw_data; 5288 XIMText *text; 5289 char *src; 5290 GSList *event_queue; 5291 5292 #ifdef XIM_DEBUG 5293 xim_log("preedit_draw_cbproc()\n"); 5294 #endif 5295 5296 draw_data = (XIMPreeditDrawCallbackStruct *) call_data; 5297 text = (XIMText *) draw_data->text; 5298 5299 if ((text == NULL && draw_data->chg_length == preedit_buf_len) 5300 || preedit_buf_len == 0) 5301 { 5302 init_preedit_start_col(); 5303 vim_free(draw_feedback); 5304 draw_feedback = NULL; 5305 } 5306 if (draw_data->chg_length > 0) 5307 { 5308 int bs_cnt; 5309 5310 if (draw_data->chg_length > preedit_buf_len) 5311 bs_cnt = preedit_buf_len; 5312 else 5313 bs_cnt = draw_data->chg_length; 5314 xim_back_delete(bs_cnt); 5315 preedit_buf_len -= bs_cnt; 5316 } 5317 if (text != NULL) 5318 { 5319 int len; 5320 #ifdef FEAT_MBYTE 5321 char_u *buf = NULL; 5322 unsigned int nfeedback = 0; 5323 #endif 5324 char_u *ptr; 5325 5326 src = text->string.multi_byte; 5327 if (src != NULL && !text->encoding_is_wchar) 5328 { 5329 len = strlen(src); 5330 ptr = (char_u *)src; 5331 /* Avoid the enter for decision */ 5332 if (*ptr == '\n') 5333 return; 5334 5335 #ifdef FEAT_MBYTE 5336 if (input_conv.vc_type != CONV_NONE 5337 && (buf = string_convert(&input_conv, 5338 (char_u *)src, &len)) != NULL) 5339 { 5340 /* Converted from 'termencoding' to 'encoding'. */ 5341 add_to_input_buf_csi(buf, len); 5342 ptr = buf; 5343 } 5344 else 5345 #endif 5346 add_to_input_buf_csi((char_u *)src, len); 5347 /* Add count of character to preedit_buf_len */ 5348 while (*ptr != NUL) 5349 { 5350 #ifdef FEAT_MBYTE 5351 if (draw_data->text->feedback != NULL) 5352 { 5353 if (draw_feedback == NULL) 5354 draw_feedback = (char *)alloc(draw_data->chg_first 5355 + text->length); 5356 else 5357 draw_feedback = realloc(draw_feedback, 5358 draw_data->chg_first + text->length); 5359 if (draw_feedback != NULL) 5360 { 5361 draw_feedback[nfeedback + draw_data->chg_first] 5362 = draw_data->text->feedback[nfeedback]; 5363 nfeedback++; 5364 } 5365 } 5366 if (has_mbyte) 5367 ptr += (*mb_ptr2len)(ptr); 5368 else 5369 #endif 5370 ptr++; 5371 preedit_buf_len++; 5372 } 5373 #ifdef FEAT_MBYTE 5374 vim_free(buf); 5375 #endif 5376 preedit_end_col = MAXCOL; 5377 } 5378 } 5379 if (text != NULL || draw_data->chg_length > 0) 5380 { 5381 event_queue = key_press_event_queue; 5382 processing_queued_event = TRUE; 5383 while (event_queue != NULL && processing_queued_event) 5384 { 5385 GdkEvent *ev = event_queue->data; 5386 5387 gboolean *ret; 5388 gtk_signal_emit_by_name((GtkObject*)gui.mainwin, "key_press_event", 5389 ev, &ret); 5390 gdk_event_free(ev); 5391 event_queue = event_queue->next; 5392 } 5393 processing_queued_event = FALSE; 5394 if (key_press_event_queue) 5395 { 5396 g_slist_free(key_press_event_queue); 5397 key_press_event_queue = NULL; 5398 } 5399 } 5400 if (gtk_main_level() > 0) 5401 gtk_main_quit(); 5402 } 5403 5404 /* 5405 * Retrieve the highlighting attributes at column col in the preedit string. 5406 * Return -1 if not in preediting mode or if col is out of range. 5407 */ 5408 int 5409 im_get_feedback_attr(int col) 5410 { 5411 if (draw_feedback != NULL && col < preedit_buf_len) 5412 { 5413 if (draw_feedback[col] & XIMReverse) 5414 return HL_INVERSE; 5415 else if (draw_feedback[col] & XIMUnderline) 5416 return HL_UNDERLINE; 5417 else 5418 return hl_attr(HLF_V); 5419 } 5420 5421 return -1; 5422 } 5423 5424 /*ARGSUSED*/ 5425 static void 5426 preedit_caret_cbproc(XIC xic, XPointer client_data, XPointer call_data) 5427 { 5428 #ifdef XIM_DEBUG 5429 xim_log("preedit_caret_cbproc()\n"); 5430 #endif 5431 } 5432 5433 /*ARGSUSED*/ 5434 static void 5435 preedit_done_cbproc(XIC xic, XPointer client_data, XPointer call_data) 5436 { 5437 #ifdef XIM_DEBUG 5438 xim_log("preedit_done_cbproc()\n"); 5439 #endif 5440 5441 vim_free(draw_feedback); 5442 draw_feedback = NULL; 5443 xim_can_preediting = FALSE; 5444 xim_has_preediting = FALSE; 5445 gui_update_cursor(TRUE, FALSE); 5446 if (showmode() > 0) 5447 { 5448 setcursor(); 5449 out_flush(); 5450 } 5451 } 5452 5453 void 5454 xim_reset(void) 5455 { 5456 char *text; 5457 5458 #ifdef XIM_DEBUG 5459 xim_log("xim_reset()\n"); 5460 #endif 5461 5462 if (xic != NULL) 5463 { 5464 text = XmbResetIC(((GdkICPrivate *)xic)->xic); 5465 if (text != NULL && !(xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS)) 5466 add_to_input_buf_csi((char_u *)text, strlen(text)); 5467 else 5468 preedit_buf_len = 0; 5469 if (text != NULL) 5470 XFree(text); 5471 } 5472 } 5473 5474 /*ARGSUSED*/ 5475 int 5476 xim_queue_key_press_event(GdkEventKey *event, int down) 5477 { 5478 #ifdef XIM_DEBUG 5479 xim_log("xim_queue_key_press_event()\n"); 5480 #endif 5481 5482 if (preedit_buf_len <= 0) 5483 return FALSE; 5484 if (processing_queued_event) 5485 processing_queued_event = FALSE; 5486 5487 key_press_event_queue = g_slist_append(key_press_event_queue, 5488 gdk_event_copy((GdkEvent *)event)); 5489 return TRUE; 5490 } 5491 5492 /*ARGSUSED*/ 5493 static void 5494 preedit_callback_setup(GdkIC *ic) 5495 { 5496 XIC xxic; 5497 XVaNestedList preedit_attr; 5498 XIMCallback preedit_start_cb; 5499 XIMCallback preedit_draw_cb; 5500 XIMCallback preedit_caret_cb; 5501 XIMCallback preedit_done_cb; 5502 5503 xxic = ((GdkICPrivate*)xic)->xic; 5504 preedit_start_cb.callback = (XIMProc)preedit_start_cbproc; 5505 preedit_draw_cb.callback = (XIMProc)preedit_draw_cbproc; 5506 preedit_caret_cb.callback = (XIMProc)preedit_caret_cbproc; 5507 preedit_done_cb.callback = (XIMProc)preedit_done_cbproc; 5508 preedit_attr 5509 = XVaCreateNestedList (0, 5510 XNPreeditStartCallback, &preedit_start_cb, 5511 XNPreeditDrawCallback, &preedit_draw_cb, 5512 XNPreeditCaretCallback, &preedit_caret_cb, 5513 XNPreeditDoneCallback, &preedit_done_cb, 5514 0); 5515 XSetICValues (xxic, XNPreeditAttributes, preedit_attr, 0); 5516 XFree(preedit_attr); 5517 } 5518 5519 /*ARGSUSED*/ 5520 static void 5521 reset_state_setup(GdkIC *ic) 5522 { 5523 #ifdef USE_X11R6_XIM 5524 /* don't change the input context when we call reset */ 5525 XSetICValues(((GdkICPrivate*)ic)->xic, XNResetState, XIMPreserveState, 0); 5526 #endif 5527 } 5528 5529 void 5530 xim_init(void) 5531 { 5532 #ifdef XIM_DEBUG 5533 xim_log("xim_init()\n"); 5534 #endif 5535 5536 xic = NULL; 5537 xic_attr = NULL; 5538 5539 if (!gdk_im_ready()) 5540 { 5541 if (p_verbose > 0) 5542 { 5543 verbose_enter(); 5544 EMSG(_("E292: Input Method Server is not running")); 5545 verbose_leave(); 5546 } 5547 return; 5548 } 5549 if ((xic_attr = gdk_ic_attr_new()) != NULL) 5550 { 5551 #ifdef FEAT_XFONTSET 5552 gint width, height; 5553 #endif 5554 int mask; 5555 GdkColormap *colormap; 5556 GdkICAttr *attr = xic_attr; 5557 int attrmask = (int)GDK_IC_ALL_REQ; 5558 GtkWidget *widget = gui.drawarea; 5559 5560 attr->style = (GdkIMStyle)xim_input_style; 5561 attr->client_window = gui.mainwin->window; 5562 5563 if ((colormap = gtk_widget_get_colormap(widget)) != 5564 gtk_widget_get_default_colormap()) 5565 { 5566 attrmask |= (int)GDK_IC_PREEDIT_COLORMAP; 5567 attr->preedit_colormap = colormap; 5568 } 5569 attrmask |= (int)GDK_IC_PREEDIT_FOREGROUND; 5570 attrmask |= (int)GDK_IC_PREEDIT_BACKGROUND; 5571 attr->preedit_foreground = widget->style->fg[GTK_STATE_NORMAL]; 5572 attr->preedit_background = widget->style->base[GTK_STATE_NORMAL]; 5573 5574 #ifdef FEAT_XFONTSET 5575 if ((xim_input_style & (int)GDK_IM_PREEDIT_MASK) 5576 == (int)GDK_IM_PREEDIT_POSITION) 5577 { 5578 if (gui.fontset == NOFONTSET 5579 || gui.fontset->type != GDK_FONT_FONTSET) 5580 { 5581 EMSG(_(e_overthespot)); 5582 } 5583 else 5584 { 5585 gdk_window_get_size(widget->window, &width, &height); 5586 5587 attrmask |= (int)GDK_IC_PREEDIT_POSITION_REQ; 5588 attr->spot_location.x = TEXT_X(0); 5589 attr->spot_location.y = TEXT_Y(0); 5590 attr->preedit_area.x = gui.border_offset; 5591 attr->preedit_area.y = gui.border_offset; 5592 attr->preedit_area.width = width - 2*gui.border_offset; 5593 attr->preedit_area.height = height - 2*gui.border_offset; 5594 attr->preedit_fontset = gui.fontset; 5595 } 5596 } 5597 5598 if ((xim_input_style & (int)GDK_IM_STATUS_MASK) 5599 == (int)GDK_IM_STATUS_AREA) 5600 { 5601 if (gui.fontset == NOFONTSET 5602 || gui.fontset->type != GDK_FONT_FONTSET) 5603 { 5604 EMSG(_(e_overthespot)); 5605 } 5606 else 5607 { 5608 gdk_window_get_size(gui.mainwin->window, &width, &height); 5609 attrmask |= (int)GDK_IC_STATUS_AREA_REQ; 5610 attr->status_area.x = 0; 5611 attr->status_area.y = height - gui.char_height - 1; 5612 attr->status_area.width = width; 5613 attr->status_area.height = gui.char_height; 5614 attr->status_fontset = gui.fontset; 5615 } 5616 } 5617 else if ((xim_input_style & (int)GDK_IM_STATUS_MASK) 5618 == (int)GDK_IM_STATUS_CALLBACKS) 5619 { 5620 /* FIXME */ 5621 } 5622 #endif 5623 5624 xic = gdk_ic_new(attr, (GdkICAttributesType)attrmask); 5625 5626 if (xic == NULL) 5627 EMSG(_(e_xim)); 5628 else 5629 { 5630 mask = (int)gdk_window_get_events(widget->window); 5631 mask |= (int)gdk_ic_get_events(xic); 5632 gdk_window_set_events(widget->window, (GdkEventMask)mask); 5633 if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS) 5634 preedit_callback_setup(xic); 5635 reset_state_setup(xic); 5636 } 5637 } 5638 } 5639 5640 void 5641 im_shutdown(void) 5642 { 5643 #ifdef XIM_DEBUG 5644 xim_log("im_shutdown()\n"); 5645 #endif 5646 5647 if (xic != NULL) 5648 { 5649 gdk_im_end(); 5650 gdk_ic_destroy(xic); 5651 xic = NULL; 5652 } 5653 xim_is_active = FALSE; 5654 xim_can_preediting = FALSE; 5655 preedit_start_col = MAXCOL; 5656 xim_has_preediting = FALSE; 5657 } 5658 5659 #endif /* FEAT_GUI_GTK */ 5660 5661 int 5662 xim_get_status_area_height() 5663 { 5664 #ifdef FEAT_GUI_GTK 5665 if (xim_input_style & (int)GDK_IM_STATUS_AREA) 5666 return gui.char_height; 5667 #else 5668 if (status_area_enabled) 5669 return gui.char_height; 5670 #endif 5671 return 0; 5672 } 5673 5674 /* 5675 * Get IM status. When IM is on, return TRUE. Else return FALSE. 5676 * FIXME: This doesn't work correctly: Having focus doesn't always mean XIM is 5677 * active, when not having focus XIM may still be active (e.g., when using a 5678 * tear-off menu item). 5679 */ 5680 int 5681 im_get_status() 5682 { 5683 # ifdef FEAT_GUI_GTK 5684 if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS) 5685 return xim_can_preediting; 5686 # endif 5687 return xim_has_focus; 5688 } 5689 5690 # endif /* !HAVE_GTK2 */ 5691 5692 # if defined(FEAT_GUI_GTK) || defined(PROTO) 5693 int 5694 im_is_preediting() 5695 { 5696 return xim_has_preediting; 5697 } 5698 # endif 5699 #endif /* FEAT_XIM */ 5700 5701 #if defined(FEAT_MBYTE) || defined(PROTO) 5702 5703 /* 5704 * Setup "vcp" for conversion from "from" to "to". 5705 * The names must have been made canonical with enc_canonize(). 5706 * vcp->vc_type must have been initialized to CONV_NONE. 5707 * Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8 5708 * instead). 5709 * Afterwards invoke with "from" and "to" equal to NULL to cleanup. 5710 * Return FAIL when conversion is not supported, OK otherwise. 5711 */ 5712 int 5713 convert_setup(vcp, from, to) 5714 vimconv_T *vcp; 5715 char_u *from; 5716 char_u *to; 5717 { 5718 int from_prop; 5719 int to_prop; 5720 5721 /* Reset to no conversion. */ 5722 # ifdef USE_ICONV 5723 if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1) 5724 iconv_close(vcp->vc_fd); 5725 # endif 5726 vcp->vc_type = CONV_NONE; 5727 vcp->vc_factor = 1; 5728 vcp->vc_fail = FALSE; 5729 5730 /* No conversion when one of the names is empty or they are equal. */ 5731 if (from == NULL || *from == NUL || to == NULL || *to == NUL 5732 || STRCMP(from, to) == 0) 5733 return OK; 5734 5735 from_prop = enc_canon_props(from); 5736 to_prop = enc_canon_props(to); 5737 if ((from_prop & ENC_LATIN1) && (to_prop & ENC_UNICODE)) 5738 { 5739 /* Internal latin1 -> utf-8 conversion. */ 5740 vcp->vc_type = CONV_TO_UTF8; 5741 vcp->vc_factor = 2; /* up to twice as long */ 5742 } 5743 else if ((from_prop & ENC_LATIN9) && (to_prop & ENC_UNICODE)) 5744 { 5745 /* Internal latin9 -> utf-8 conversion. */ 5746 vcp->vc_type = CONV_9_TO_UTF8; 5747 vcp->vc_factor = 3; /* up to three as long (euro sign) */ 5748 } 5749 else if ((from_prop & ENC_UNICODE) && (to_prop & ENC_LATIN1)) 5750 { 5751 /* Internal utf-8 -> latin1 conversion. */ 5752 vcp->vc_type = CONV_TO_LATIN1; 5753 } 5754 else if ((from_prop & ENC_UNICODE) && (to_prop & ENC_LATIN9)) 5755 { 5756 /* Internal utf-8 -> latin9 conversion. */ 5757 vcp->vc_type = CONV_TO_LATIN9; 5758 } 5759 #ifdef WIN3264 5760 /* Win32-specific codepage <-> codepage conversion without iconv. */ 5761 else if (((from_prop & ENC_UNICODE) || encname2codepage(from) > 0) 5762 && ((to_prop & ENC_UNICODE) || encname2codepage(to) > 0)) 5763 { 5764 vcp->vc_type = CONV_CODEPAGE; 5765 vcp->vc_factor = 2; /* up to twice as long */ 5766 vcp->vc_cpfrom = (from_prop & ENC_UNICODE) ? 0 : encname2codepage(from); 5767 vcp->vc_cpto = (to_prop & ENC_UNICODE) ? 0 : encname2codepage(to); 5768 } 5769 #endif 5770 #ifdef MACOS_X 5771 else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1)) 5772 { 5773 vcp->vc_type = CONV_MAC_LATIN1; 5774 } 5775 else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_UNICODE)) 5776 { 5777 vcp->vc_type = CONV_MAC_UTF8; 5778 vcp->vc_factor = 2; /* up to twice as long */ 5779 } 5780 else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN)) 5781 { 5782 vcp->vc_type = CONV_LATIN1_MAC; 5783 } 5784 else if ((from_prop & ENC_UNICODE) && (to_prop & ENC_MACROMAN)) 5785 { 5786 vcp->vc_type = CONV_UTF8_MAC; 5787 } 5788 #endif 5789 # ifdef USE_ICONV 5790 else 5791 { 5792 /* Use iconv() for conversion. */ 5793 vcp->vc_fd = (iconv_t)my_iconv_open( 5794 (to_prop & ENC_UNICODE) ? (char_u *)"utf-8" : to, 5795 (from_prop & ENC_UNICODE) ? (char_u *)"utf-8" : from); 5796 if (vcp->vc_fd != (iconv_t)-1) 5797 { 5798 vcp->vc_type = CONV_ICONV; 5799 vcp->vc_factor = 4; /* could be longer too... */ 5800 } 5801 } 5802 # endif 5803 if (vcp->vc_type == CONV_NONE) 5804 return FAIL; 5805 5806 return OK; 5807 } 5808 5809 #if defined(FEAT_GUI) || defined(AMIGA) || defined(WIN3264) \ 5810 || defined(MSDOS) || defined(PROTO) 5811 /* 5812 * Do conversion on typed input characters in-place. 5813 * The input and output are not NUL terminated! 5814 * Returns the length after conversion. 5815 */ 5816 int 5817 convert_input(ptr, len, maxlen) 5818 char_u *ptr; 5819 int len; 5820 int maxlen; 5821 { 5822 return convert_input_safe(ptr, len, maxlen, NULL, NULL); 5823 } 5824 #endif 5825 5826 /* 5827 * Like convert_input(), but when there is an incomplete byte sequence at the 5828 * end return that as an allocated string in "restp" and set "*restlenp" to 5829 * the length. If "restp" is NULL it is not used. 5830 */ 5831 int 5832 convert_input_safe(ptr, len, maxlen, restp, restlenp) 5833 char_u *ptr; 5834 int len; 5835 int maxlen; 5836 char_u **restp; 5837 int *restlenp; 5838 { 5839 char_u *d; 5840 int dlen = len; 5841 int unconvertlen = 0; 5842 5843 d = string_convert_ext(&input_conv, ptr, &dlen, 5844 restp == NULL ? NULL : &unconvertlen); 5845 if (d != NULL) 5846 { 5847 if (dlen <= maxlen) 5848 { 5849 if (unconvertlen > 0) 5850 { 5851 /* Move the unconverted characters to allocated memory. */ 5852 *restp = alloc(unconvertlen); 5853 if (*restp != NULL) 5854 mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen); 5855 *restlenp = unconvertlen; 5856 } 5857 mch_memmove(ptr, d, dlen); 5858 } 5859 else 5860 /* result is too long, keep the unconverted text (the caller must 5861 * have done something wrong!) */ 5862 dlen = len; 5863 vim_free(d); 5864 } 5865 return dlen; 5866 } 5867 5868 /* 5869 * Convert text "ptr[*lenp]" according to "vcp". 5870 * Returns the result in allocated memory and sets "*lenp". 5871 * When "lenp" is NULL, use NUL terminated strings. 5872 * Illegal chars are often changed to "?", unless vcp->vc_fail is set. 5873 * When something goes wrong, NULL is returned and "*lenp" is unchanged. 5874 */ 5875 char_u * 5876 string_convert(vcp, ptr, lenp) 5877 vimconv_T *vcp; 5878 char_u *ptr; 5879 int *lenp; 5880 { 5881 return string_convert_ext(vcp, ptr, lenp, NULL); 5882 } 5883 5884 /* 5885 * Like string_convert(), but when "unconvlenp" is not NULL and there are is 5886 * an incomplete sequence at the end it is not converted and "*unconvlenp" is 5887 * set to the number of remaining bytes. 5888 */ 5889 char_u * 5890 string_convert_ext(vcp, ptr, lenp, unconvlenp) 5891 vimconv_T *vcp; 5892 char_u *ptr; 5893 int *lenp; 5894 int *unconvlenp; 5895 { 5896 char_u *retval = NULL; 5897 char_u *d; 5898 int len; 5899 int i; 5900 int l; 5901 int c; 5902 5903 if (lenp == NULL) 5904 len = (int)STRLEN(ptr); 5905 else 5906 len = *lenp; 5907 if (len == 0) 5908 return vim_strsave((char_u *)""); 5909 5910 switch (vcp->vc_type) 5911 { 5912 case CONV_TO_UTF8: /* latin1 to utf-8 conversion */ 5913 retval = alloc(len * 2 + 1); 5914 if (retval == NULL) 5915 break; 5916 d = retval; 5917 for (i = 0; i < len; ++i) 5918 { 5919 c = ptr[i]; 5920 if (c < 0x80) 5921 *d++ = c; 5922 else 5923 { 5924 *d++ = 0xc0 + ((unsigned)c >> 6); 5925 *d++ = 0x80 + (c & 0x3f); 5926 } 5927 } 5928 *d = NUL; 5929 if (lenp != NULL) 5930 *lenp = (int)(d - retval); 5931 break; 5932 5933 case CONV_9_TO_UTF8: /* latin9 to utf-8 conversion */ 5934 retval = alloc(len * 3 + 1); 5935 if (retval == NULL) 5936 break; 5937 d = retval; 5938 for (i = 0; i < len; ++i) 5939 { 5940 c = ptr[i]; 5941 switch (c) 5942 { 5943 case 0xa4: c = 0x20ac; break; /* euro */ 5944 case 0xa6: c = 0x0160; break; /* S hat */ 5945 case 0xa8: c = 0x0161; break; /* S -hat */ 5946 case 0xb4: c = 0x017d; break; /* Z hat */ 5947 case 0xb8: c = 0x017e; break; /* Z -hat */ 5948 case 0xbc: c = 0x0152; break; /* OE */ 5949 case 0xbd: c = 0x0153; break; /* oe */ 5950 case 0xbe: c = 0x0178; break; /* Y */ 5951 } 5952 d += utf_char2bytes(c, d); 5953 } 5954 *d = NUL; 5955 if (lenp != NULL) 5956 *lenp = (int)(d - retval); 5957 break; 5958 5959 case CONV_TO_LATIN1: /* utf-8 to latin1 conversion */ 5960 case CONV_TO_LATIN9: /* utf-8 to latin9 conversion */ 5961 retval = alloc(len + 1); 5962 if (retval == NULL) 5963 break; 5964 d = retval; 5965 for (i = 0; i < len; ++i) 5966 { 5967 l = utf_ptr2len(ptr + i); 5968 if (l == 0) 5969 *d++ = NUL; 5970 else if (l == 1) 5971 { 5972 if (unconvlenp != NULL && utf8len_tab[ptr[i]] > len - i) 5973 { 5974 /* Incomplete sequence at the end. */ 5975 *unconvlenp = len - i; 5976 break; 5977 } 5978 *d++ = ptr[i]; 5979 } 5980 else 5981 { 5982 c = utf_ptr2char(ptr + i); 5983 if (vcp->vc_type == CONV_TO_LATIN9) 5984 switch (c) 5985 { 5986 case 0x20ac: c = 0xa4; break; /* euro */ 5987 case 0x0160: c = 0xa6; break; /* S hat */ 5988 case 0x0161: c = 0xa8; break; /* S -hat */ 5989 case 0x017d: c = 0xb4; break; /* Z hat */ 5990 case 0x017e: c = 0xb8; break; /* Z -hat */ 5991 case 0x0152: c = 0xbc; break; /* OE */ 5992 case 0x0153: c = 0xbd; break; /* oe */ 5993 case 0x0178: c = 0xbe; break; /* Y */ 5994 case 0xa4: 5995 case 0xa6: 5996 case 0xa8: 5997 case 0xb4: 5998 case 0xb8: 5999 case 0xbc: 6000 case 0xbd: 6001 case 0xbe: c = 0x100; break; /* not in latin9 */ 6002 } 6003 if (!utf_iscomposing(c)) /* skip composing chars */ 6004 { 6005 if (c < 0x100) 6006 *d++ = c; 6007 else if (vcp->vc_fail) 6008 { 6009 vim_free(retval); 6010 return NULL; 6011 } 6012 else 6013 { 6014 *d++ = 0xbf; 6015 if (utf_char2cells(c) > 1) 6016 *d++ = '?'; 6017 } 6018 } 6019 i += l - 1; 6020 } 6021 } 6022 *d = NUL; 6023 if (lenp != NULL) 6024 *lenp = (int)(d - retval); 6025 break; 6026 6027 # ifdef MACOS_CONVERT 6028 case CONV_MAC_LATIN1: 6029 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6030 'm', 'l', unconvlenp); 6031 break; 6032 6033 case CONV_LATIN1_MAC: 6034 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6035 'l', 'm', unconvlenp); 6036 break; 6037 6038 case CONV_MAC_UTF8: 6039 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6040 'm', 'u', unconvlenp); 6041 break; 6042 6043 case CONV_UTF8_MAC: 6044 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6045 'u', 'm', unconvlenp); 6046 break; 6047 # endif 6048 6049 # ifdef USE_ICONV 6050 case CONV_ICONV: /* conversion with output_conv.vc_fd */ 6051 retval = iconv_string(vcp, ptr, len, unconvlenp); 6052 if (retval != NULL && lenp != NULL) 6053 *lenp = (int)STRLEN(retval); 6054 break; 6055 # endif 6056 # ifdef WIN3264 6057 case CONV_CODEPAGE: /* codepage -> codepage */ 6058 { 6059 int retlen; 6060 int tmp_len; 6061 short_u *tmp; 6062 6063 /* 1. codepage/UTF-8 -> ucs-2. */ 6064 if (vcp->vc_cpfrom == 0) 6065 tmp_len = utf8_to_ucs2(ptr, len, NULL, NULL); 6066 else 6067 tmp_len = MultiByteToWideChar(vcp->vc_cpfrom, 0, 6068 ptr, len, 0, 0); 6069 tmp = (short_u *)alloc(sizeof(short_u) * tmp_len); 6070 if (tmp == NULL) 6071 break; 6072 if (vcp->vc_cpfrom == 0) 6073 utf8_to_ucs2(ptr, len, tmp, unconvlenp); 6074 else 6075 MultiByteToWideChar(vcp->vc_cpfrom, 0, ptr, len, tmp, tmp_len); 6076 6077 /* 2. ucs-2 -> codepage/UTF-8. */ 6078 if (vcp->vc_cpto == 0) 6079 retlen = ucs2_to_utf8(tmp, tmp_len, NULL); 6080 else 6081 retlen = WideCharToMultiByte(vcp->vc_cpto, 0, 6082 tmp, tmp_len, 0, 0, 0, 0); 6083 retval = alloc(retlen + 1); 6084 if (retval != NULL) 6085 { 6086 if (vcp->vc_cpto == 0) 6087 ucs2_to_utf8(tmp, tmp_len, retval); 6088 else 6089 WideCharToMultiByte(vcp->vc_cpto, 0, 6090 tmp, tmp_len, retval, retlen, 0, 0); 6091 retval[retlen] = NUL; 6092 if (lenp != NULL) 6093 *lenp = retlen; 6094 } 6095 vim_free(tmp); 6096 break; 6097 } 6098 # endif 6099 } 6100 6101 return retval; 6102 } 6103 #endif 6104