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 six composing characters 30 * are allowed. These are drawn on top of the first char. 31 * For most editing the sequence of bytes with composing 32 * characters included is considered to be one character. 33 * "enc_unicode" When 2 use 16-bit Unicode characters (or UTF-16). 34 * When 4 use 32-but Unicode characters. 35 * Internally characters are stored in UTF-8 encoding to 36 * avoid NUL bytes. Conversion happens when doing I/O. 37 * "enc_utf8" will also be TRUE. 38 * 39 * "has_mbyte" is set when "enc_dbcs" or "enc_utf8" is non-zero. 40 * 41 * If none of these is TRUE, 8-bit bytes are used for a character. The 42 * encoding isn't currently specified (TODO). 43 * 44 * 'encoding' specifies the encoding used in the core. This is in registers, 45 * text manipulation, buffers, etc. Conversion has to be done when characters 46 * in another encoding are received or send: 47 * 48 * clipboard 49 * ^ 50 * | (2) 51 * V 52 * +---------------+ 53 * (1) | | (3) 54 * keyboard ----->| core |-----> display 55 * | | 56 * +---------------+ 57 * ^ 58 * | (4) 59 * V 60 * file 61 * 62 * (1) Typed characters arrive in the current locale. Conversion is to be 63 * done when 'encoding' is different from 'termencoding'. 64 * (2) Text will be made available with the encoding specified with 65 * 'encoding'. If this is not sufficient, system-specific conversion 66 * might be required. 67 * (3) For the GUI the correct font must be selected, no conversion done. 68 * Otherwise, conversion is to be done when 'encoding' differs from 69 * 'termencoding'. (Different in the GTK+ 2 port -- 'termencoding' 70 * is always used for both input and output and must always be set to 71 * "utf-8". gui_mch_init() does this automatically.) 72 * (4) The encoding of the file is specified with 'fileencoding'. Conversion 73 * is to be done when it's different from 'encoding'. 74 * 75 * The viminfo file is a special case: Only text is converted, not file names. 76 * Vim scripts may contain an ":encoding" command. This has an effect for 77 * some commands, like ":menutrans" 78 */ 79 80 #include "vim.h" 81 82 #ifdef WIN32UNIX 83 # ifndef WIN32_LEAN_AND_MEAN 84 # define WIN32_LEAN_AND_MEAN 85 # endif 86 # 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_ptr2len_len __ARGS((char_u *p, int size)); 131 static int utf_ptr2cells_len __ARGS((char_u *p, int size)); 132 static int dbcs_char2cells __ARGS((int c)); 133 static int dbcs_ptr2cells_len __ARGS((char_u *p, int size)); 134 static int dbcs_ptr2char __ARGS((char_u *p)); 135 136 /* 137 * Lookup table to quickly get the length in bytes of a UTF-8 character from 138 * the first byte of a UTF-8 string. 139 * Bytes which are illegal when used as the first byte have a 1. 140 * The NUL byte has length 1. 141 */ 142 static char utf8len_tab[256] = 143 { 144 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, 145 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, 146 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, 147 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 148 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 149 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 150 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, 151 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, 152 }; 153 154 /* 155 * Like utf8len_tab above, but using a zero for illegal lead bytes. 156 */ 157 static char utf8len_tab_zero[256] = 158 { 159 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, 160 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, 161 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, 162 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 163 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 164 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 165 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, 166 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,6,6,0,0, 167 }; 168 169 /* 170 * XIM often causes trouble. Define XIM_DEBUG to get a log of XIM callbacks 171 * in the "xim.log" file. 172 */ 173 /* #define XIM_DEBUG */ 174 #ifdef XIM_DEBUG 175 static void 176 xim_log(char *s, ...) 177 { 178 va_list arglist; 179 static FILE *fd = NULL; 180 181 if (fd == (FILE *)-1) 182 return; 183 if (fd == NULL) 184 { 185 fd = mch_fopen("xim.log", "w"); 186 if (fd == NULL) 187 { 188 EMSG("Cannot open xim.log"); 189 fd = (FILE *)-1; 190 return; 191 } 192 } 193 194 va_start(arglist, s); 195 vfprintf(fd, s, arglist); 196 va_end(arglist); 197 } 198 #endif 199 200 #endif 201 202 #if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO) 203 /* 204 * Canonical encoding names and their properties. 205 * "iso-8859-n" is handled by enc_canonize() directly. 206 */ 207 static struct 208 { char *name; int prop; int codepage;} 209 enc_canon_table[] = 210 { 211 #define IDX_LATIN_1 0 212 {"latin1", ENC_8BIT + ENC_LATIN1, 1252}, 213 #define IDX_ISO_2 1 214 {"iso-8859-2", ENC_8BIT, 0}, 215 #define IDX_ISO_3 2 216 {"iso-8859-3", ENC_8BIT, 0}, 217 #define IDX_ISO_4 3 218 {"iso-8859-4", ENC_8BIT, 0}, 219 #define IDX_ISO_5 4 220 {"iso-8859-5", ENC_8BIT, 0}, 221 #define IDX_ISO_6 5 222 {"iso-8859-6", ENC_8BIT, 0}, 223 #define IDX_ISO_7 6 224 {"iso-8859-7", ENC_8BIT, 0}, 225 #define IDX_ISO_8 7 226 {"iso-8859-8", ENC_8BIT, 0}, 227 #define IDX_ISO_9 8 228 {"iso-8859-9", ENC_8BIT, 0}, 229 #define IDX_ISO_10 9 230 {"iso-8859-10", ENC_8BIT, 0}, 231 #define IDX_ISO_11 10 232 {"iso-8859-11", ENC_8BIT, 0}, 233 #define IDX_ISO_13 11 234 {"iso-8859-13", ENC_8BIT, 0}, 235 #define IDX_ISO_14 12 236 {"iso-8859-14", ENC_8BIT, 0}, 237 #define IDX_ISO_15 13 238 {"iso-8859-15", ENC_8BIT + ENC_LATIN9, 0}, 239 #define IDX_KOI8_R 14 240 {"koi8-r", ENC_8BIT, 0}, 241 #define IDX_KOI8_U 15 242 {"koi8-u", ENC_8BIT, 0}, 243 #define IDX_UTF8 16 244 {"utf-8", ENC_UNICODE, 0}, 245 #define IDX_UCS2 17 246 {"ucs-2", ENC_UNICODE + ENC_ENDIAN_B + ENC_2BYTE, 0}, 247 #define IDX_UCS2LE 18 248 {"ucs-2le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2BYTE, 0}, 249 #define IDX_UTF16 19 250 {"utf-16", ENC_UNICODE + ENC_ENDIAN_B + ENC_2WORD, 0}, 251 #define IDX_UTF16LE 20 252 {"utf-16le", ENC_UNICODE + ENC_ENDIAN_L + ENC_2WORD, 0}, 253 #define IDX_UCS4 21 254 {"ucs-4", ENC_UNICODE + ENC_ENDIAN_B + ENC_4BYTE, 0}, 255 #define IDX_UCS4LE 22 256 {"ucs-4le", ENC_UNICODE + ENC_ENDIAN_L + ENC_4BYTE, 0}, 257 258 /* For debugging DBCS encoding on Unix. */ 259 #define IDX_DEBUG 23 260 {"debug", ENC_DBCS, DBCS_DEBUG}, 261 #define IDX_EUC_JP 24 262 {"euc-jp", ENC_DBCS, DBCS_JPNU}, 263 #define IDX_SJIS 25 264 {"sjis", ENC_DBCS, DBCS_JPN}, 265 #define IDX_EUC_KR 26 266 {"euc-kr", ENC_DBCS, DBCS_KORU}, 267 #define IDX_EUC_CN 27 268 {"euc-cn", ENC_DBCS, DBCS_CHSU}, 269 #define IDX_EUC_TW 28 270 {"euc-tw", ENC_DBCS, DBCS_CHTU}, 271 #define IDX_BIG5 29 272 {"big5", ENC_DBCS, DBCS_CHT}, 273 274 /* MS-DOS and MS-Windows codepages are included here, so that they can be 275 * used on Unix too. Most of them are similar to ISO-8859 encodings, but 276 * not exactly the same. */ 277 #define IDX_CP437 30 278 {"cp437", ENC_8BIT, 437}, /* like iso-8859-1 */ 279 #define IDX_CP737 31 280 {"cp737", ENC_8BIT, 737}, /* like iso-8859-7 */ 281 #define IDX_CP775 32 282 {"cp775", ENC_8BIT, 775}, /* Baltic */ 283 #define IDX_CP850 33 284 {"cp850", ENC_8BIT, 850}, /* like iso-8859-4 */ 285 #define IDX_CP852 34 286 {"cp852", ENC_8BIT, 852}, /* like iso-8859-1 */ 287 #define IDX_CP855 35 288 {"cp855", ENC_8BIT, 855}, /* like iso-8859-2 */ 289 #define IDX_CP857 36 290 {"cp857", ENC_8BIT, 857}, /* like iso-8859-5 */ 291 #define IDX_CP860 37 292 {"cp860", ENC_8BIT, 860}, /* like iso-8859-9 */ 293 #define IDX_CP861 38 294 {"cp861", ENC_8BIT, 861}, /* like iso-8859-1 */ 295 #define IDX_CP862 39 296 {"cp862", ENC_8BIT, 862}, /* like iso-8859-1 */ 297 #define IDX_CP863 40 298 {"cp863", ENC_8BIT, 863}, /* like iso-8859-8 */ 299 #define IDX_CP865 41 300 {"cp865", ENC_8BIT, 865}, /* like iso-8859-1 */ 301 #define IDX_CP866 42 302 {"cp866", ENC_8BIT, 866}, /* like iso-8859-5 */ 303 #define IDX_CP869 43 304 {"cp869", ENC_8BIT, 869}, /* like iso-8859-7 */ 305 #define IDX_CP874 44 306 {"cp874", ENC_8BIT, 874}, /* Thai */ 307 #define IDX_CP932 45 308 {"cp932", ENC_DBCS, DBCS_JPN}, 309 #define IDX_CP936 46 310 {"cp936", ENC_DBCS, DBCS_CHS}, 311 #define IDX_CP949 47 312 {"cp949", ENC_DBCS, DBCS_KOR}, 313 #define IDX_CP950 48 314 {"cp950", ENC_DBCS, DBCS_CHT}, 315 #define IDX_CP1250 49 316 {"cp1250", ENC_8BIT, 1250}, /* Czech, Polish, etc. */ 317 #define IDX_CP1251 50 318 {"cp1251", ENC_8BIT, 1251}, /* Cyrillic */ 319 /* cp1252 is considered to be equal to latin1 */ 320 #define IDX_CP1253 51 321 {"cp1253", ENC_8BIT, 1253}, /* Greek */ 322 #define IDX_CP1254 52 323 {"cp1254", ENC_8BIT, 1254}, /* Turkish */ 324 #define IDX_CP1255 53 325 {"cp1255", ENC_8BIT, 1255}, /* Hebrew */ 326 #define IDX_CP1256 54 327 {"cp1256", ENC_8BIT, 1256}, /* Arabic */ 328 #define IDX_CP1257 55 329 {"cp1257", ENC_8BIT, 1257}, /* Baltic */ 330 #define IDX_CP1258 56 331 {"cp1258", ENC_8BIT, 1258}, /* Vietnamese */ 332 333 #define IDX_MACROMAN 57 334 {"macroman", ENC_8BIT + ENC_MACROMAN, 0}, /* Mac OS */ 335 #define IDX_DECMCS 58 336 {"dec-mcs", ENC_8BIT, 0}, /* DEC MCS */ 337 #define IDX_HPROMAN8 59 338 {"hp-roman8", ENC_8BIT, 0}, /* HP Roman8 */ 339 #define IDX_COUNT 60 340 }; 341 342 /* 343 * Aliases for encoding names. 344 */ 345 static struct 346 { char *name; int canon;} 347 enc_alias_table[] = 348 { 349 {"ansi", IDX_LATIN_1}, 350 {"iso-8859-1", IDX_LATIN_1}, 351 {"latin2", IDX_ISO_2}, 352 {"latin3", IDX_ISO_3}, 353 {"latin4", IDX_ISO_4}, 354 {"cyrillic", IDX_ISO_5}, 355 {"arabic", IDX_ISO_6}, 356 {"greek", IDX_ISO_7}, 357 #ifdef WIN3264 358 {"hebrew", IDX_CP1255}, 359 #else 360 {"hebrew", IDX_ISO_8}, 361 #endif 362 {"latin5", IDX_ISO_9}, 363 {"turkish", IDX_ISO_9}, /* ? */ 364 {"latin6", IDX_ISO_10}, 365 {"nordic", IDX_ISO_10}, /* ? */ 366 {"thai", IDX_ISO_11}, /* ? */ 367 {"latin7", IDX_ISO_13}, 368 {"latin8", IDX_ISO_14}, 369 {"latin9", IDX_ISO_15}, 370 {"utf8", IDX_UTF8}, 371 {"unicode", IDX_UCS2}, 372 {"ucs2", IDX_UCS2}, 373 {"ucs2be", IDX_UCS2}, 374 {"ucs-2be", IDX_UCS2}, 375 {"ucs2le", IDX_UCS2LE}, 376 {"utf16", IDX_UTF16}, 377 {"utf16be", IDX_UTF16}, 378 {"utf-16be", IDX_UTF16}, 379 {"utf16le", IDX_UTF16LE}, 380 {"ucs4", IDX_UCS4}, 381 {"ucs4be", IDX_UCS4}, 382 {"ucs-4be", IDX_UCS4}, 383 {"ucs4le", IDX_UCS4LE}, 384 {"utf32", IDX_UCS4}, 385 {"utf-32", IDX_UCS4}, 386 {"utf32be", IDX_UCS4}, 387 {"utf-32be", IDX_UCS4}, 388 {"utf32le", IDX_UCS4LE}, 389 {"utf-32le", IDX_UCS4LE}, 390 {"932", IDX_CP932}, 391 {"949", IDX_CP949}, 392 {"936", IDX_CP936}, 393 {"gbk", IDX_CP936}, 394 {"950", IDX_CP950}, 395 {"eucjp", IDX_EUC_JP}, 396 {"unix-jis", IDX_EUC_JP}, 397 {"ujis", IDX_EUC_JP}, 398 {"shift-jis", IDX_SJIS}, 399 {"euckr", IDX_EUC_KR}, 400 {"5601", IDX_EUC_KR}, /* Sun: KS C 5601 */ 401 {"euccn", IDX_EUC_CN}, 402 {"gb2312", IDX_EUC_CN}, 403 {"euctw", IDX_EUC_TW}, 404 #if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS) 405 {"japan", IDX_CP932}, 406 {"korea", IDX_CP949}, 407 {"prc", IDX_CP936}, 408 {"chinese", IDX_CP936}, 409 {"taiwan", IDX_CP950}, 410 {"big5", IDX_CP950}, 411 #else 412 {"japan", IDX_EUC_JP}, 413 {"korea", IDX_EUC_KR}, 414 {"prc", IDX_EUC_CN}, 415 {"chinese", IDX_EUC_CN}, 416 {"taiwan", IDX_EUC_TW}, 417 {"cp950", IDX_BIG5}, 418 {"950", IDX_BIG5}, 419 #endif 420 {"mac", IDX_MACROMAN}, 421 {"mac-roman", IDX_MACROMAN}, 422 {NULL, 0} 423 }; 424 425 #ifndef CP_UTF8 426 # define CP_UTF8 65001 /* magic number from winnls.h */ 427 #endif 428 429 /* 430 * Find encoding "name" in the list of canonical encoding names. 431 * Returns -1 if not found. 432 */ 433 static int 434 enc_canon_search(name) 435 char_u *name; 436 { 437 int i; 438 439 for (i = 0; i < IDX_COUNT; ++i) 440 if (STRCMP(name, enc_canon_table[i].name) == 0) 441 return i; 442 return -1; 443 } 444 445 #endif 446 447 #if defined(FEAT_MBYTE) || defined(PROTO) 448 449 /* 450 * Find canonical encoding "name" in the list and return its properties. 451 * Returns 0 if not found. 452 */ 453 int 454 enc_canon_props(name) 455 char_u *name; 456 { 457 int i; 458 459 i = enc_canon_search(name); 460 if (i >= 0) 461 return enc_canon_table[i].prop; 462 #ifdef WIN3264 463 if (name[0] == 'c' && name[1] == 'p' && VIM_ISDIGIT(name[2])) 464 { 465 CPINFO cpinfo; 466 467 /* Get info on this codepage to find out what it is. */ 468 if (GetCPInfo(atoi(name + 2), &cpinfo) != 0) 469 { 470 if (cpinfo.MaxCharSize == 1) /* some single-byte encoding */ 471 return ENC_8BIT; 472 if (cpinfo.MaxCharSize == 2 473 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) 474 /* must be a DBCS encoding */ 475 return ENC_DBCS; 476 } 477 return 0; 478 } 479 #endif 480 if (STRNCMP(name, "2byte-", 6) == 0) 481 return ENC_DBCS; 482 if (STRNCMP(name, "8bit-", 5) == 0 || STRNCMP(name, "iso-8859-", 9) == 0) 483 return ENC_8BIT; 484 return 0; 485 } 486 487 /* 488 * Set up for using multi-byte characters. 489 * Called in three cases: 490 * - by main() to initialize (p_enc == NULL) 491 * - by set_init_1() after 'encoding' was set to its default. 492 * - by do_set() when 'encoding' has been set. 493 * p_enc must have been passed through enc_canonize() already. 494 * Sets the "enc_unicode", "enc_utf8", "enc_dbcs" and "has_mbyte" flags. 495 * Fills mb_bytelen_tab[] and returns NULL when there are no problems. 496 * When there is something wrong: Returns an error message and doesn't change 497 * anything. 498 */ 499 char_u * 500 mb_init() 501 { 502 int i; 503 int idx; 504 int n; 505 int enc_dbcs_new = 0; 506 #if defined(USE_ICONV) && !defined(WIN3264) && !defined(WIN32UNIX) \ 507 && !defined(MACOS) 508 # define LEN_FROM_CONV 509 vimconv_T vimconv; 510 char_u *p; 511 #endif 512 513 if (p_enc == NULL) 514 { 515 /* Just starting up: set the whole table to one's. */ 516 for (i = 0; i < 256; ++i) 517 mb_bytelen_tab[i] = 1; 518 input_conv.vc_type = CONV_NONE; 519 input_conv.vc_factor = 1; 520 output_conv.vc_type = CONV_NONE; 521 return NULL; 522 } 523 524 #ifdef WIN3264 525 if (p_enc[0] == 'c' && p_enc[1] == 'p' && VIM_ISDIGIT(p_enc[2])) 526 { 527 CPINFO cpinfo; 528 529 /* Get info on this codepage to find out what it is. */ 530 if (GetCPInfo(atoi(p_enc + 2), &cpinfo) != 0) 531 { 532 if (cpinfo.MaxCharSize == 1) 533 { 534 /* some single-byte encoding */ 535 enc_unicode = 0; 536 enc_utf8 = FALSE; 537 } 538 else if (cpinfo.MaxCharSize == 2 539 && (cpinfo.LeadByte[0] != 0 || cpinfo.LeadByte[1] != 0)) 540 { 541 /* must be a DBCS encoding, check below */ 542 enc_dbcs_new = atoi(p_enc + 2); 543 } 544 else 545 goto codepage_invalid; 546 } 547 else if (GetLastError() == ERROR_INVALID_PARAMETER) 548 { 549 codepage_invalid: 550 return (char_u *)N_("E543: Not a valid codepage"); 551 } 552 } 553 #endif 554 else if (STRNCMP(p_enc, "8bit-", 5) == 0 555 || STRNCMP(p_enc, "iso-8859-", 9) == 0) 556 { 557 /* Accept any "8bit-" or "iso-8859-" name. */ 558 enc_unicode = 0; 559 enc_utf8 = FALSE; 560 } 561 else if (STRNCMP(p_enc, "2byte-", 6) == 0) 562 { 563 #ifdef WIN3264 564 /* Windows: accept only valid codepage numbers, check below. */ 565 if (p_enc[6] != 'c' || p_enc[7] != 'p' 566 || (enc_dbcs_new = atoi(p_enc + 8)) == 0) 567 return e_invarg; 568 #else 569 /* Unix: accept any "2byte-" name, assume current locale. */ 570 enc_dbcs_new = DBCS_2BYTE; 571 #endif 572 } 573 else if ((idx = enc_canon_search(p_enc)) >= 0) 574 { 575 i = enc_canon_table[idx].prop; 576 if (i & ENC_UNICODE) 577 { 578 /* Unicode */ 579 enc_utf8 = TRUE; 580 if (i & (ENC_2BYTE | ENC_2WORD)) 581 enc_unicode = 2; 582 else if (i & ENC_4BYTE) 583 enc_unicode = 4; 584 else 585 enc_unicode = 0; 586 } 587 else if (i & ENC_DBCS) 588 { 589 /* 2byte, handle below */ 590 enc_dbcs_new = enc_canon_table[idx].codepage; 591 } 592 else 593 { 594 /* Must be 8-bit. */ 595 enc_unicode = 0; 596 enc_utf8 = FALSE; 597 } 598 } 599 else /* Don't know what encoding this is, reject it. */ 600 return e_invarg; 601 602 if (enc_dbcs_new != 0) 603 { 604 #ifdef WIN3264 605 /* Check if the DBCS code page is OK. */ 606 if (!IsValidCodePage(enc_dbcs_new)) 607 goto codepage_invalid; 608 #endif 609 enc_unicode = 0; 610 enc_utf8 = FALSE; 611 } 612 enc_dbcs = enc_dbcs_new; 613 has_mbyte = (enc_dbcs != 0 || enc_utf8); 614 615 #ifdef WIN3264 616 enc_codepage = encname2codepage(p_enc); 617 enc_latin9 = (STRCMP(p_enc, "iso-8859-15") == 0); 618 #endif 619 620 /* Detect an encoding that uses latin1 characters. */ 621 enc_latin1like = (enc_utf8 || STRCMP(p_enc, "latin1") == 0 622 || STRCMP(p_enc, "iso-8859-15") == 0); 623 624 /* 625 * Set the function pointers. 626 */ 627 if (enc_utf8) 628 { 629 mb_ptr2len = utfc_ptr2len; 630 mb_ptr2len_len = utfc_ptr2len_len; 631 mb_char2len = utf_char2len; 632 mb_char2bytes = utf_char2bytes; 633 mb_ptr2cells = utf_ptr2cells; 634 mb_ptr2cells_len = utf_ptr2cells_len; 635 mb_char2cells = utf_char2cells; 636 mb_off2cells = utf_off2cells; 637 mb_ptr2char = utf_ptr2char; 638 mb_head_off = utf_head_off; 639 } 640 else if (enc_dbcs != 0) 641 { 642 mb_ptr2len = dbcs_ptr2len; 643 mb_ptr2len_len = dbcs_ptr2len_len; 644 mb_char2len = dbcs_char2len; 645 mb_char2bytes = dbcs_char2bytes; 646 mb_ptr2cells = dbcs_ptr2cells; 647 mb_ptr2cells_len = dbcs_ptr2cells_len; 648 mb_char2cells = dbcs_char2cells; 649 mb_off2cells = dbcs_off2cells; 650 mb_ptr2char = dbcs_ptr2char; 651 mb_head_off = dbcs_head_off; 652 } 653 else 654 { 655 mb_ptr2len = latin_ptr2len; 656 mb_ptr2len_len = latin_ptr2len_len; 657 mb_char2len = latin_char2len; 658 mb_char2bytes = latin_char2bytes; 659 mb_ptr2cells = latin_ptr2cells; 660 mb_ptr2cells_len = latin_ptr2cells_len; 661 mb_char2cells = latin_char2cells; 662 mb_off2cells = latin_off2cells; 663 mb_ptr2char = latin_ptr2char; 664 mb_head_off = latin_head_off; 665 } 666 667 /* 668 * Fill the mb_bytelen_tab[] for MB_BYTE2LEN(). 669 */ 670 #ifdef LEN_FROM_CONV 671 /* When 'encoding' is different from the current locale mblen() won't 672 * work. Use conversion to "utf-8" instead. */ 673 vimconv.vc_type = CONV_NONE; 674 if (enc_dbcs) 675 { 676 p = enc_locale(); 677 if (p == NULL || STRCMP(p, p_enc) != 0) 678 { 679 convert_setup(&vimconv, p_enc, (char_u *)"utf-8"); 680 vimconv.vc_fail = TRUE; 681 } 682 vim_free(p); 683 } 684 #endif 685 686 for (i = 0; i < 256; ++i) 687 { 688 /* Our own function to reliably check the length of UTF-8 characters, 689 * independent of mblen(). */ 690 if (enc_utf8) 691 n = utf8len_tab[i]; 692 else if (enc_dbcs == 0) 693 n = 1; 694 else 695 { 696 #if defined(WIN3264) || defined(WIN32UNIX) 697 /* enc_dbcs is set by setting 'fileencoding'. It becomes a Windows 698 * CodePage identifier, which we can pass directly in to Windows 699 * API */ 700 n = IsDBCSLeadByteEx(enc_dbcs, (BYTE)i) ? 2 : 1; 701 #else 702 # if defined(MACOS) || defined(__amigaos4__) 703 /* 704 * if mblen() is not available, character which MSB is turned on 705 * are treated as leading byte character. (note : This assumption 706 * is not always true.) 707 */ 708 n = (i & 0x80) ? 2 : 1; 709 # else 710 char buf[MB_MAXBYTES]; 711 # ifdef X_LOCALE 712 # ifndef mblen 713 # define mblen _Xmblen 714 # endif 715 # endif 716 if (i == NUL) /* just in case mblen() can't handle "" */ 717 n = 1; 718 else 719 { 720 buf[0] = i; 721 buf[1] = 0; 722 #ifdef LEN_FROM_CONV 723 if (vimconv.vc_type != CONV_NONE) 724 { 725 /* 726 * string_convert() should fail when converting the first 727 * byte of a double-byte character. 728 */ 729 p = string_convert(&vimconv, (char_u *)buf, NULL); 730 if (p != NULL) 731 { 732 vim_free(p); 733 n = 1; 734 } 735 else 736 n = 2; 737 } 738 else 739 #endif 740 { 741 /* 742 * mblen() should return -1 for invalid (means the leading 743 * multibyte) character. However there are some platforms 744 * where mblen() returns 0 for invalid character. 745 * Therefore, following condition includes 0. 746 */ 747 ignored = mblen(NULL, 0); /* First reset the state. */ 748 if (mblen(buf, (size_t)1) <= 0) 749 n = 2; 750 else 751 n = 1; 752 } 753 } 754 # endif 755 #endif 756 } 757 758 mb_bytelen_tab[i] = n; 759 } 760 761 #ifdef LEN_FROM_CONV 762 convert_setup(&vimconv, NULL, NULL); 763 #endif 764 765 /* The cell width depends on the type of multi-byte characters. */ 766 (void)init_chartab(); 767 768 /* When enc_utf8 is set or reset, (de)allocate ScreenLinesUC[] */ 769 screenalloc(FALSE); 770 771 /* When using Unicode, set default for 'fileencodings'. */ 772 if (enc_utf8 && !option_was_set((char_u *)"fencs")) 773 set_string_option_direct((char_u *)"fencs", -1, 774 (char_u *)"ucs-bom,utf-8,default,latin1", OPT_FREE, 0); 775 776 #if defined(HAVE_BIND_TEXTDOMAIN_CODESET) && defined(FEAT_GETTEXT) 777 /* GNU gettext 0.10.37 supports this feature: set the codeset used for 778 * translated messages independently from the current locale. */ 779 (void)bind_textdomain_codeset(VIMPACKAGE, 780 enc_utf8 ? "utf-8" : (char *)p_enc); 781 #endif 782 783 #ifdef WIN32 784 /* When changing 'encoding' while starting up, then convert the command 785 * line arguments from the active codepage to 'encoding'. */ 786 if (starting != 0) 787 fix_arg_enc(); 788 #endif 789 790 #ifdef FEAT_AUTOCMD 791 /* Fire an autocommand to let people do custom font setup. This must be 792 * after Vim has been setup for the new encoding. */ 793 apply_autocmds(EVENT_ENCODINGCHANGED, NULL, (char_u *)"", FALSE, curbuf); 794 #endif 795 796 #ifdef FEAT_SPELL 797 /* Need to reload spell dictionaries */ 798 spell_reload(); 799 #endif 800 801 return NULL; 802 } 803 804 /* 805 * Return the size of the BOM for the current buffer: 806 * 0 - no BOM 807 * 2 - UCS-2 or UTF-16 BOM 808 * 4 - UCS-4 BOM 809 * 3 - UTF-8 BOM 810 */ 811 int 812 bomb_size() 813 { 814 int n = 0; 815 816 if (curbuf->b_p_bomb && !curbuf->b_p_bin) 817 { 818 if (*curbuf->b_p_fenc == NUL) 819 { 820 if (enc_utf8) 821 { 822 if (enc_unicode != 0) 823 n = enc_unicode; 824 else 825 n = 3; 826 } 827 } 828 else if (STRCMP(curbuf->b_p_fenc, "utf-8") == 0) 829 n = 3; 830 else if (STRNCMP(curbuf->b_p_fenc, "ucs-2", 5) == 0 831 || STRNCMP(curbuf->b_p_fenc, "utf-16", 6) == 0) 832 n = 2; 833 else if (STRNCMP(curbuf->b_p_fenc, "ucs-4", 5) == 0) 834 n = 4; 835 } 836 return n; 837 } 838 839 /* 840 * Get class of pointer: 841 * 0 for blank or NUL 842 * 1 for punctuation 843 * 2 for an (ASCII) word character 844 * >2 for other word characters 845 */ 846 int 847 mb_get_class(p) 848 char_u *p; 849 { 850 if (MB_BYTE2LEN(p[0]) == 1) 851 { 852 if (p[0] == NUL || vim_iswhite(p[0])) 853 return 0; 854 if (vim_iswordc(p[0])) 855 return 2; 856 return 1; 857 } 858 if (enc_dbcs != 0 && p[0] != NUL && p[1] != NUL) 859 return dbcs_class(p[0], p[1]); 860 if (enc_utf8) 861 return utf_class(utf_ptr2char(p)); 862 return 0; 863 } 864 865 /* 866 * Get class of a double-byte character. This always returns 3 or bigger. 867 * TODO: Should return 1 for punctuation. 868 */ 869 int 870 dbcs_class(lead, trail) 871 unsigned lead; 872 unsigned trail; 873 { 874 switch (enc_dbcs) 875 { 876 /* please add classfy routine for your language in here */ 877 878 case DBCS_JPNU: /* ? */ 879 case DBCS_JPN: 880 { 881 /* JIS code classification */ 882 unsigned char lb = lead; 883 unsigned char tb = trail; 884 885 /* convert process code to JIS */ 886 # if defined(WIN3264) || defined(WIN32UNIX) || defined(MACOS) 887 /* process code is SJIS */ 888 if (lb <= 0x9f) 889 lb = (lb - 0x81) * 2 + 0x21; 890 else 891 lb = (lb - 0xc1) * 2 + 0x21; 892 if (tb <= 0x7e) 893 tb -= 0x1f; 894 else if (tb <= 0x9e) 895 tb -= 0x20; 896 else 897 { 898 tb -= 0x7e; 899 lb += 1; 900 } 901 # else 902 /* 903 * XXX: Code page identification can not use with all 904 * system! So, some other encoding information 905 * will be needed. 906 * In japanese: SJIS,EUC,UNICODE,(JIS) 907 * Note that JIS-code system don't use as 908 * process code in most system because it uses 909 * escape sequences(JIS is context depend encoding). 910 */ 911 /* assume process code is JAPANESE-EUC */ 912 lb &= 0x7f; 913 tb &= 0x7f; 914 # endif 915 /* exceptions */ 916 switch (lb << 8 | tb) 917 { 918 case 0x2121: /* ZENKAKU space */ 919 return 0; 920 case 0x2122: /* KU-TEN (Japanese comma) */ 921 case 0x2123: /* TOU-TEN (Japanese period) */ 922 case 0x2124: /* ZENKAKU comma */ 923 case 0x2125: /* ZENKAKU period */ 924 return 1; 925 case 0x213c: /* prolongedsound handled as KATAKANA */ 926 return 13; 927 } 928 /* sieved by KU code */ 929 switch (lb) 930 { 931 case 0x21: 932 case 0x22: 933 /* special symbols */ 934 return 10; 935 case 0x23: 936 /* alpha-numeric */ 937 return 11; 938 case 0x24: 939 /* hiragana */ 940 return 12; 941 case 0x25: 942 /* katakana */ 943 return 13; 944 case 0x26: 945 /* greek */ 946 return 14; 947 case 0x27: 948 /* russian */ 949 return 15; 950 case 0x28: 951 /* lines */ 952 return 16; 953 default: 954 /* kanji */ 955 return 17; 956 } 957 } 958 959 case DBCS_KORU: /* ? */ 960 case DBCS_KOR: 961 { 962 /* KS code classification */ 963 unsigned char c1 = lead; 964 unsigned char c2 = trail; 965 966 /* 967 * 20 : Hangul 968 * 21 : Hanja 969 * 22 : Symbols 970 * 23 : Alpha-numeric/Roman Letter (Full width) 971 * 24 : Hangul Letter(Alphabet) 972 * 25 : Roman Numeral/Greek Letter 973 * 26 : Box Drawings 974 * 27 : Unit Symbols 975 * 28 : Circled/Parenthesized Letter 976 * 29 : Hirigana/Katakana 977 * 30 : Cyrillic Letter 978 */ 979 980 if (c1 >= 0xB0 && c1 <= 0xC8) 981 /* Hangul */ 982 return 20; 983 #if defined(WIN3264) || defined(WIN32UNIX) 984 else if (c1 <= 0xA0 || c2 <= 0xA0) 985 /* Extended Hangul Region : MS UHC(Unified Hangul Code) */ 986 /* c1: 0x81-0xA0 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xFE 987 * c1: 0xA1-0xC6 with c2: 0x41-0x5A, 0x61-0x7A, 0x81-0xA0 988 */ 989 return 20; 990 #endif 991 992 else if (c1 >= 0xCA && c1 <= 0xFD) 993 /* Hanja */ 994 return 21; 995 else switch (c1) 996 { 997 case 0xA1: 998 case 0xA2: 999 /* Symbols */ 1000 return 22; 1001 case 0xA3: 1002 /* Alpha-numeric */ 1003 return 23; 1004 case 0xA4: 1005 /* Hangul Letter(Alphabet) */ 1006 return 24; 1007 case 0xA5: 1008 /* Roman Numeral/Greek Letter */ 1009 return 25; 1010 case 0xA6: 1011 /* Box Drawings */ 1012 return 26; 1013 case 0xA7: 1014 /* Unit Symbols */ 1015 return 27; 1016 case 0xA8: 1017 case 0xA9: 1018 if (c2 <= 0xAF) 1019 return 25; /* Roman Letter */ 1020 else if (c2 >= 0xF6) 1021 return 22; /* Symbols */ 1022 else 1023 /* Circled/Parenthesized Letter */ 1024 return 28; 1025 case 0xAA: 1026 case 0xAB: 1027 /* Hirigana/Katakana */ 1028 return 29; 1029 case 0xAC: 1030 /* Cyrillic Letter */ 1031 return 30; 1032 } 1033 } 1034 default: 1035 break; 1036 } 1037 return 3; 1038 } 1039 1040 /* 1041 * mb_char2len() function pointer. 1042 * Return length in bytes of character "c". 1043 * Returns 1 for a single-byte character. 1044 */ 1045 int 1046 latin_char2len(c) 1047 int c UNUSED; 1048 { 1049 return 1; 1050 } 1051 1052 static int 1053 dbcs_char2len(c) 1054 int c; 1055 { 1056 if (c >= 0x100) 1057 return 2; 1058 return 1; 1059 } 1060 1061 /* 1062 * mb_char2bytes() function pointer. 1063 * Convert a character to its bytes. 1064 * Returns the length in bytes. 1065 */ 1066 int 1067 latin_char2bytes(c, buf) 1068 int c; 1069 char_u *buf; 1070 { 1071 buf[0] = c; 1072 return 1; 1073 } 1074 1075 static int 1076 dbcs_char2bytes(c, buf) 1077 int c; 1078 char_u *buf; 1079 { 1080 if (c >= 0x100) 1081 { 1082 buf[0] = (unsigned)c >> 8; 1083 buf[1] = c; 1084 /* Never use a NUL byte, it causes lots of trouble. It's an invalid 1085 * character anyway. */ 1086 if (buf[1] == NUL) 1087 buf[1] = '\n'; 1088 return 2; 1089 } 1090 buf[0] = c; 1091 return 1; 1092 } 1093 1094 /* 1095 * mb_ptr2len() function pointer. 1096 * Get byte length of character at "*p" but stop at a NUL. 1097 * For UTF-8 this includes following composing characters. 1098 * Returns 0 when *p is NUL. 1099 */ 1100 int 1101 latin_ptr2len(p) 1102 char_u *p; 1103 { 1104 return MB_BYTE2LEN(*p); 1105 } 1106 1107 static int 1108 dbcs_ptr2len(p) 1109 char_u *p; 1110 { 1111 int len; 1112 1113 /* Check if second byte is not missing. */ 1114 len = MB_BYTE2LEN(*p); 1115 if (len == 2 && p[1] == NUL) 1116 len = 1; 1117 return len; 1118 } 1119 1120 /* 1121 * mb_ptr2len_len() function pointer. 1122 * Like mb_ptr2len(), but limit to read "size" bytes. 1123 * Returns 0 for an empty string. 1124 * Returns 1 for an illegal char or an incomplete byte sequence. 1125 */ 1126 int 1127 latin_ptr2len_len(p, size) 1128 char_u *p; 1129 int size; 1130 { 1131 if (size < 1 || *p == NUL) 1132 return 0; 1133 return 1; 1134 } 1135 1136 static int 1137 dbcs_ptr2len_len(p, size) 1138 char_u *p; 1139 int size; 1140 { 1141 int len; 1142 1143 if (size < 1 || *p == NUL) 1144 return 0; 1145 if (size == 1) 1146 return 1; 1147 /* Check that second byte is not missing. */ 1148 len = MB_BYTE2LEN(*p); 1149 if (len == 2 && p[1] == NUL) 1150 len = 1; 1151 return len; 1152 } 1153 1154 struct interval 1155 { 1156 long first; 1157 long last; 1158 }; 1159 static int intable __ARGS((struct interval *table, size_t size, int c)); 1160 1161 /* 1162 * Return TRUE if "c" is in "table[size / sizeof(struct interval)]". 1163 */ 1164 static int 1165 intable(table, size, c) 1166 struct interval *table; 1167 size_t size; 1168 int c; 1169 { 1170 int mid, bot, top; 1171 1172 /* first quick check for Latin1 etc. characters */ 1173 if (c < table[0].first) 1174 return FALSE; 1175 1176 /* binary search in table */ 1177 bot = 0; 1178 top = (int)(size / sizeof(struct interval) - 1); 1179 while (top >= bot) 1180 { 1181 mid = (bot + top) / 2; 1182 if (table[mid].last < c) 1183 bot = mid + 1; 1184 else if (table[mid].first > c) 1185 top = mid - 1; 1186 else 1187 return TRUE; 1188 } 1189 return FALSE; 1190 } 1191 1192 /* 1193 * For UTF-8 character "c" return 2 for a double-width character, 1 for others. 1194 * Returns 4 or 6 for an unprintable character. 1195 * Is only correct for characters >= 0x80. 1196 * When p_ambw is "double", return 2 for a character with East Asian Width 1197 * class 'A'(mbiguous). 1198 */ 1199 int 1200 utf_char2cells(c) 1201 int c; 1202 { 1203 /* Sorted list of non-overlapping intervals of East Asian double width 1204 * characters, generated with ../runtime/tools/unicode.vim. */ 1205 static struct interval doublewidth[] = 1206 { 1207 {0x1100, 0x115f}, 1208 {0x11a3, 0x11a7}, 1209 {0x11fa, 0x11ff}, 1210 {0x2329, 0x232a}, 1211 {0x2e80, 0x2e99}, 1212 {0x2e9b, 0x2ef3}, 1213 {0x2f00, 0x2fd5}, 1214 {0x2ff0, 0x2ffb}, 1215 {0x3000, 0x3029}, 1216 {0x3030, 0x303e}, 1217 {0x3041, 0x3096}, 1218 {0x309b, 0x30ff}, 1219 {0x3105, 0x312d}, 1220 {0x3131, 0x318e}, 1221 {0x3190, 0x31b7}, 1222 {0x31c0, 0x31e3}, 1223 {0x31f0, 0x321e}, 1224 {0x3220, 0x3247}, 1225 {0x3250, 0x32fe}, 1226 {0x3300, 0x4dbf}, 1227 {0x4e00, 0xa48c}, 1228 {0xa490, 0xa4c6}, 1229 {0xa960, 0xa97c}, 1230 {0xac00, 0xd7a3}, 1231 {0xd7b0, 0xd7c6}, 1232 {0xd7cb, 0xd7fb}, 1233 {0xf900, 0xfaff}, 1234 {0xfe10, 0xfe19}, 1235 {0xfe30, 0xfe52}, 1236 {0xfe54, 0xfe66}, 1237 {0xfe68, 0xfe6b}, 1238 {0xff01, 0xff60}, 1239 {0xffe0, 0xffe6}, 1240 {0x1f200, 0x1f200}, 1241 {0x1f210, 0x1f231}, 1242 {0x1f240, 0x1f248}, 1243 {0x20000, 0x2fffd}, 1244 {0x30000, 0x3fffd} 1245 }; 1246 /* Sorted list of non-overlapping intervals of East Asian Ambiguous 1247 * characters, generated with ../runtime/tools/unicode.vim. */ 1248 static struct interval ambiguous[] = 1249 { 1250 {0x00a1, 0x00a1}, 1251 {0x00a4, 0x00a4}, 1252 {0x00a7, 0x00a8}, 1253 {0x00aa, 0x00aa}, 1254 {0x00ad, 0x00ae}, 1255 {0x00b0, 0x00b4}, 1256 {0x00b6, 0x00ba}, 1257 {0x00bc, 0x00bf}, 1258 {0x00c6, 0x00c6}, 1259 {0x00d0, 0x00d0}, 1260 {0x00d7, 0x00d8}, 1261 {0x00de, 0x00e1}, 1262 {0x00e6, 0x00e6}, 1263 {0x00e8, 0x00ea}, 1264 {0x00ec, 0x00ed}, 1265 {0x00f0, 0x00f0}, 1266 {0x00f2, 0x00f3}, 1267 {0x00f7, 0x00fa}, 1268 {0x00fc, 0x00fc}, 1269 {0x00fe, 0x00fe}, 1270 {0x0101, 0x0101}, 1271 {0x0111, 0x0111}, 1272 {0x0113, 0x0113}, 1273 {0x011b, 0x011b}, 1274 {0x0126, 0x0127}, 1275 {0x012b, 0x012b}, 1276 {0x0131, 0x0133}, 1277 {0x0138, 0x0138}, 1278 {0x013f, 0x0142}, 1279 {0x0144, 0x0144}, 1280 {0x0148, 0x014b}, 1281 {0x014d, 0x014d}, 1282 {0x0152, 0x0153}, 1283 {0x0166, 0x0167}, 1284 {0x016b, 0x016b}, 1285 {0x01ce, 0x01ce}, 1286 {0x01d0, 0x01d0}, 1287 {0x01d2, 0x01d2}, 1288 {0x01d4, 0x01d4}, 1289 {0x01d6, 0x01d6}, 1290 {0x01d8, 0x01d8}, 1291 {0x01da, 0x01da}, 1292 {0x01dc, 0x01dc}, 1293 {0x0251, 0x0251}, 1294 {0x0261, 0x0261}, 1295 {0x02c4, 0x02c4}, 1296 {0x02c7, 0x02c7}, 1297 {0x02c9, 0x02cb}, 1298 {0x02cd, 0x02cd}, 1299 {0x02d0, 0x02d0}, 1300 {0x02d8, 0x02db}, 1301 {0x02dd, 0x02dd}, 1302 {0x02df, 0x02df}, 1303 {0x0391, 0x03a1}, 1304 {0x03a3, 0x03a9}, 1305 {0x03b1, 0x03c1}, 1306 {0x03c3, 0x03c9}, 1307 {0x0401, 0x0401}, 1308 {0x0410, 0x044f}, 1309 {0x0451, 0x0451}, 1310 {0x2010, 0x2010}, 1311 {0x2013, 0x2016}, 1312 {0x2018, 0x2019}, 1313 {0x201c, 0x201d}, 1314 {0x2020, 0x2022}, 1315 {0x2024, 0x2027}, 1316 {0x2030, 0x2030}, 1317 {0x2032, 0x2033}, 1318 {0x2035, 0x2035}, 1319 {0x203b, 0x203b}, 1320 {0x203e, 0x203e}, 1321 {0x2074, 0x2074}, 1322 {0x207f, 0x207f}, 1323 {0x2081, 0x2084}, 1324 {0x20ac, 0x20ac}, 1325 {0x2103, 0x2103}, 1326 {0x2105, 0x2105}, 1327 {0x2109, 0x2109}, 1328 {0x2113, 0x2113}, 1329 {0x2116, 0x2116}, 1330 {0x2121, 0x2122}, 1331 {0x2126, 0x2126}, 1332 {0x212b, 0x212b}, 1333 {0x2153, 0x2154}, 1334 {0x215b, 0x215e}, 1335 {0x2160, 0x216b}, 1336 {0x2170, 0x2179}, 1337 {0x2189, 0x2189}, 1338 {0x2190, 0x2199}, 1339 {0x21b8, 0x21b9}, 1340 {0x21d2, 0x21d2}, 1341 {0x21d4, 0x21d4}, 1342 {0x21e7, 0x21e7}, 1343 {0x2200, 0x2200}, 1344 {0x2202, 0x2203}, 1345 {0x2207, 0x2208}, 1346 {0x220b, 0x220b}, 1347 {0x220f, 0x220f}, 1348 {0x2211, 0x2211}, 1349 {0x2215, 0x2215}, 1350 {0x221a, 0x221a}, 1351 {0x221d, 0x2220}, 1352 {0x2223, 0x2223}, 1353 {0x2225, 0x2225}, 1354 {0x2227, 0x222c}, 1355 {0x222e, 0x222e}, 1356 {0x2234, 0x2237}, 1357 {0x223c, 0x223d}, 1358 {0x2248, 0x2248}, 1359 {0x224c, 0x224c}, 1360 {0x2252, 0x2252}, 1361 {0x2260, 0x2261}, 1362 {0x2264, 0x2267}, 1363 {0x226a, 0x226b}, 1364 {0x226e, 0x226f}, 1365 {0x2282, 0x2283}, 1366 {0x2286, 0x2287}, 1367 {0x2295, 0x2295}, 1368 {0x2299, 0x2299}, 1369 {0x22a5, 0x22a5}, 1370 {0x22bf, 0x22bf}, 1371 {0x2312, 0x2312}, 1372 {0x2460, 0x24e9}, 1373 {0x24eb, 0x254b}, 1374 {0x2550, 0x2573}, 1375 {0x2580, 0x258f}, 1376 {0x2592, 0x2595}, 1377 {0x25a0, 0x25a1}, 1378 {0x25a3, 0x25a9}, 1379 {0x25b2, 0x25b3}, 1380 {0x25b6, 0x25b7}, 1381 {0x25bc, 0x25bd}, 1382 {0x25c0, 0x25c1}, 1383 {0x25c6, 0x25c8}, 1384 {0x25cb, 0x25cb}, 1385 {0x25ce, 0x25d1}, 1386 {0x25e2, 0x25e5}, 1387 {0x25ef, 0x25ef}, 1388 {0x2605, 0x2606}, 1389 {0x2609, 0x2609}, 1390 {0x260e, 0x260f}, 1391 {0x2614, 0x2615}, 1392 {0x261c, 0x261c}, 1393 {0x261e, 0x261e}, 1394 {0x2640, 0x2640}, 1395 {0x2642, 0x2642}, 1396 {0x2660, 0x2661}, 1397 {0x2663, 0x2665}, 1398 {0x2667, 0x266a}, 1399 {0x266c, 0x266d}, 1400 {0x266f, 0x266f}, 1401 {0x269e, 0x269f}, 1402 {0x26be, 0x26bf}, 1403 {0x26c4, 0x26cd}, 1404 {0x26cf, 0x26e1}, 1405 {0x26e3, 0x26e3}, 1406 {0x26e8, 0x26ff}, 1407 {0x273d, 0x273d}, 1408 {0x2757, 0x2757}, 1409 {0x2776, 0x277f}, 1410 {0x2b55, 0x2b59}, 1411 {0x3248, 0x324f}, 1412 {0xe000, 0xf8ff}, 1413 {0xfffd, 0xfffd}, 1414 {0x1f100, 0x1f10a}, 1415 {0x1f110, 0x1f12d}, 1416 {0x1f131, 0x1f131}, 1417 {0x1f13d, 0x1f13d}, 1418 {0x1f13f, 0x1f13f}, 1419 {0x1f142, 0x1f142}, 1420 {0x1f146, 0x1f146}, 1421 {0x1f14a, 0x1f14e}, 1422 {0x1f157, 0x1f157}, 1423 {0x1f15f, 0x1f15f}, 1424 {0x1f179, 0x1f179}, 1425 {0x1f17b, 0x1f17c}, 1426 {0x1f17f, 0x1f17f}, 1427 {0x1f18a, 0x1f18d}, 1428 {0x1f190, 0x1f190}, 1429 {0xf0000, 0xffffd}, 1430 {0x100000, 0x10fffd} 1431 }; 1432 1433 if (c >= 0x100) 1434 { 1435 #ifdef USE_WCHAR_FUNCTIONS 1436 /* 1437 * Assume the library function wcwidth() works better than our own 1438 * stuff. It should return 1 for ambiguous width chars! 1439 */ 1440 int n = wcwidth(c); 1441 1442 if (n < 0) 1443 return 6; /* unprintable, displays <xxxx> */ 1444 if (n > 1) 1445 return n; 1446 #else 1447 if (!utf_printable(c)) 1448 return 6; /* unprintable, displays <xxxx> */ 1449 if (intable(doublewidth, sizeof(doublewidth), c)) 1450 return 2; 1451 #endif 1452 } 1453 1454 /* Characters below 0x100 are influenced by 'isprint' option */ 1455 else if (c >= 0x80 && !vim_isprintc(c)) 1456 return 4; /* unprintable, displays <xx> */ 1457 1458 if (c >= 0x80 && *p_ambw == 'd' && intable(ambiguous, sizeof(ambiguous), c)) 1459 return 2; 1460 1461 return 1; 1462 } 1463 1464 /* 1465 * mb_ptr2cells() function pointer. 1466 * Return the number of display cells character at "*p" occupies. 1467 * This doesn't take care of unprintable characters, use ptr2cells() for that. 1468 */ 1469 int 1470 latin_ptr2cells(p) 1471 char_u *p UNUSED; 1472 { 1473 return 1; 1474 } 1475 1476 int 1477 utf_ptr2cells(p) 1478 char_u *p; 1479 { 1480 int c; 1481 1482 /* Need to convert to a wide character. */ 1483 if (*p >= 0x80) 1484 { 1485 c = utf_ptr2char(p); 1486 /* An illegal byte is displayed as <xx>. */ 1487 if (utf_ptr2len(p) == 1 || c == NUL) 1488 return 4; 1489 /* If the char is ASCII it must be an overlong sequence. */ 1490 if (c < 0x80) 1491 return char2cells(c); 1492 return utf_char2cells(c); 1493 } 1494 return 1; 1495 } 1496 1497 int 1498 dbcs_ptr2cells(p) 1499 char_u *p; 1500 { 1501 /* Number of cells is equal to number of bytes, except for euc-jp when 1502 * the first byte is 0x8e. */ 1503 if (enc_dbcs == DBCS_JPNU && *p == 0x8e) 1504 return 1; 1505 return MB_BYTE2LEN(*p); 1506 } 1507 1508 /* 1509 * mb_ptr2cells_len() function pointer. 1510 * Like mb_ptr2cells(), but limit string length to "size". 1511 * For an empty string or truncated character returns 1. 1512 */ 1513 int 1514 latin_ptr2cells_len(p, size) 1515 char_u *p UNUSED; 1516 int size UNUSED; 1517 { 1518 return 1; 1519 } 1520 1521 static int 1522 utf_ptr2cells_len(p, size) 1523 char_u *p; 1524 int size; 1525 { 1526 int c; 1527 1528 /* Need to convert to a wide character. */ 1529 if (size > 0 && *p >= 0x80) 1530 { 1531 if (utf_ptr2len_len(p, size) < utf8len_tab[*p]) 1532 return 1; /* truncated */ 1533 c = utf_ptr2char(p); 1534 /* An illegal byte is displayed as <xx>. */ 1535 if (utf_ptr2len(p) == 1 || c == NUL) 1536 return 4; 1537 /* If the char is ASCII it must be an overlong sequence. */ 1538 if (c < 0x80) 1539 return char2cells(c); 1540 return utf_char2cells(c); 1541 } 1542 return 1; 1543 } 1544 1545 static int 1546 dbcs_ptr2cells_len(p, size) 1547 char_u *p; 1548 int size; 1549 { 1550 /* Number of cells is equal to number of bytes, except for euc-jp when 1551 * the first byte is 0x8e. */ 1552 if (size <= 1 || (enc_dbcs == DBCS_JPNU && *p == 0x8e)) 1553 return 1; 1554 return MB_BYTE2LEN(*p); 1555 } 1556 1557 /* 1558 * mb_char2cells() function pointer. 1559 * Return the number of display cells character "c" occupies. 1560 * Only takes care of multi-byte chars, not "^C" and such. 1561 */ 1562 int 1563 latin_char2cells(c) 1564 int c UNUSED; 1565 { 1566 return 1; 1567 } 1568 1569 static int 1570 dbcs_char2cells(c) 1571 int c; 1572 { 1573 /* Number of cells is equal to number of bytes, except for euc-jp when 1574 * the first byte is 0x8e. */ 1575 if (enc_dbcs == DBCS_JPNU && ((unsigned)c >> 8) == 0x8e) 1576 return 1; 1577 /* use the first byte */ 1578 return MB_BYTE2LEN((unsigned)c >> 8); 1579 } 1580 1581 /* 1582 * mb_off2cells() function pointer. 1583 * Return number of display cells for char at ScreenLines[off]. 1584 * We make sure that the offset used is less than "max_off". 1585 */ 1586 int 1587 latin_off2cells(off, max_off) 1588 unsigned off UNUSED; 1589 unsigned max_off UNUSED; 1590 { 1591 return 1; 1592 } 1593 1594 int 1595 dbcs_off2cells(off, max_off) 1596 unsigned off; 1597 unsigned max_off; 1598 { 1599 /* never check beyond end of the line */ 1600 if (off >= max_off) 1601 return 1; 1602 1603 /* Number of cells is equal to number of bytes, except for euc-jp when 1604 * the first byte is 0x8e. */ 1605 if (enc_dbcs == DBCS_JPNU && ScreenLines[off] == 0x8e) 1606 return 1; 1607 return MB_BYTE2LEN(ScreenLines[off]); 1608 } 1609 1610 int 1611 utf_off2cells(off, max_off) 1612 unsigned off; 1613 unsigned max_off; 1614 { 1615 return (off + 1 < max_off && ScreenLines[off + 1] == 0) ? 2 : 1; 1616 } 1617 1618 /* 1619 * mb_ptr2char() function pointer. 1620 * Convert a byte sequence into a character. 1621 */ 1622 int 1623 latin_ptr2char(p) 1624 char_u *p; 1625 { 1626 return *p; 1627 } 1628 1629 static int 1630 dbcs_ptr2char(p) 1631 char_u *p; 1632 { 1633 if (MB_BYTE2LEN(*p) > 1 && p[1] != NUL) 1634 return (p[0] << 8) + p[1]; 1635 return *p; 1636 } 1637 1638 /* 1639 * Convert a UTF-8 byte sequence to a wide character. 1640 * If the sequence is illegal or truncated by a NUL the first byte is 1641 * returned. 1642 * Does not include composing characters, of course. 1643 */ 1644 int 1645 utf_ptr2char(p) 1646 char_u *p; 1647 { 1648 int len; 1649 1650 if (p[0] < 0x80) /* be quick for ASCII */ 1651 return p[0]; 1652 1653 len = utf8len_tab_zero[p[0]]; 1654 if (len > 1 && (p[1] & 0xc0) == 0x80) 1655 { 1656 if (len == 2) 1657 return ((p[0] & 0x1f) << 6) + (p[1] & 0x3f); 1658 if ((p[2] & 0xc0) == 0x80) 1659 { 1660 if (len == 3) 1661 return ((p[0] & 0x0f) << 12) + ((p[1] & 0x3f) << 6) 1662 + (p[2] & 0x3f); 1663 if ((p[3] & 0xc0) == 0x80) 1664 { 1665 if (len == 4) 1666 return ((p[0] & 0x07) << 18) + ((p[1] & 0x3f) << 12) 1667 + ((p[2] & 0x3f) << 6) + (p[3] & 0x3f); 1668 if ((p[4] & 0xc0) == 0x80) 1669 { 1670 if (len == 5) 1671 return ((p[0] & 0x03) << 24) + ((p[1] & 0x3f) << 18) 1672 + ((p[2] & 0x3f) << 12) + ((p[3] & 0x3f) << 6) 1673 + (p[4] & 0x3f); 1674 if ((p[5] & 0xc0) == 0x80 && len == 6) 1675 return ((p[0] & 0x01) << 30) + ((p[1] & 0x3f) << 24) 1676 + ((p[2] & 0x3f) << 18) + ((p[3] & 0x3f) << 12) 1677 + ((p[4] & 0x3f) << 6) + (p[5] & 0x3f); 1678 } 1679 } 1680 } 1681 } 1682 /* Illegal value, just return the first byte */ 1683 return p[0]; 1684 } 1685 1686 /* 1687 * Get character at **pp and advance *pp to the next character. 1688 * Note: composing characters are skipped! 1689 */ 1690 int 1691 mb_ptr2char_adv(pp) 1692 char_u **pp; 1693 { 1694 int c; 1695 1696 c = (*mb_ptr2char)(*pp); 1697 *pp += (*mb_ptr2len)(*pp); 1698 return c; 1699 } 1700 1701 /* 1702 * Get character at **pp and advance *pp to the next character. 1703 * Note: composing characters are returned as separate characters. 1704 */ 1705 int 1706 mb_cptr2char_adv(pp) 1707 char_u **pp; 1708 { 1709 int c; 1710 1711 c = (*mb_ptr2char)(*pp); 1712 if (enc_utf8) 1713 *pp += utf_ptr2len(*pp); 1714 else 1715 *pp += (*mb_ptr2len)(*pp); 1716 return c; 1717 } 1718 1719 #if defined(FEAT_ARABIC) || defined(PROTO) 1720 /* 1721 * Check whether we are dealing with Arabic combining characters. 1722 * Note: these are NOT really composing characters! 1723 */ 1724 int 1725 arabic_combine(one, two) 1726 int one; /* first character */ 1727 int two; /* character just after "one" */ 1728 { 1729 if (one == a_LAM) 1730 return arabic_maycombine(two); 1731 return FALSE; 1732 } 1733 1734 /* 1735 * Check whether we are dealing with a character that could be regarded as an 1736 * Arabic combining character, need to check the character before this. 1737 */ 1738 int 1739 arabic_maycombine(two) 1740 int two; 1741 { 1742 if (p_arshape && !p_tbidi) 1743 return (two == a_ALEF_MADDA 1744 || two == a_ALEF_HAMZA_ABOVE 1745 || two == a_ALEF_HAMZA_BELOW 1746 || two == a_ALEF); 1747 return FALSE; 1748 } 1749 1750 /* 1751 * Check if the character pointed to by "p2" is a composing character when it 1752 * comes after "p1". For Arabic sometimes "ab" is replaced with "c", which 1753 * behaves like a composing character. 1754 */ 1755 int 1756 utf_composinglike(p1, p2) 1757 char_u *p1; 1758 char_u *p2; 1759 { 1760 int c2; 1761 1762 c2 = utf_ptr2char(p2); 1763 if (utf_iscomposing(c2)) 1764 return TRUE; 1765 if (!arabic_maycombine(c2)) 1766 return FALSE; 1767 return arabic_combine(utf_ptr2char(p1), c2); 1768 } 1769 #endif 1770 1771 /* 1772 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO 1773 * composing characters. 1774 */ 1775 int 1776 utfc_ptr2char(p, pcc) 1777 char_u *p; 1778 int *pcc; /* return: composing chars, last one is 0 */ 1779 { 1780 int len; 1781 int c; 1782 int cc; 1783 int i = 0; 1784 1785 c = utf_ptr2char(p); 1786 len = utf_ptr2len(p); 1787 1788 /* Only accept a composing char when the first char isn't illegal. */ 1789 if ((len > 1 || *p < 0x80) 1790 && p[len] >= 0x80 1791 && UTF_COMPOSINGLIKE(p, p + len)) 1792 { 1793 cc = utf_ptr2char(p + len); 1794 for (;;) 1795 { 1796 pcc[i++] = cc; 1797 if (i == MAX_MCO) 1798 break; 1799 len += utf_ptr2len(p + len); 1800 if (p[len] < 0x80 || !utf_iscomposing(cc = utf_ptr2char(p + len))) 1801 break; 1802 } 1803 } 1804 1805 if (i < MAX_MCO) /* last composing char must be 0 */ 1806 pcc[i] = 0; 1807 1808 return c; 1809 } 1810 1811 /* 1812 * Convert a UTF-8 byte string to a wide character. Also get up to MAX_MCO 1813 * composing characters. Use no more than p[maxlen]. 1814 */ 1815 int 1816 utfc_ptr2char_len(p, pcc, maxlen) 1817 char_u *p; 1818 int *pcc; /* return: composing chars, last one is 0 */ 1819 int maxlen; 1820 { 1821 int len; 1822 int c; 1823 int cc; 1824 int i = 0; 1825 1826 c = utf_ptr2char(p); 1827 len = utf_ptr2len_len(p, maxlen); 1828 /* Only accept a composing char when the first char isn't illegal. */ 1829 if ((len > 1 || *p < 0x80) 1830 && len < maxlen 1831 && p[len] >= 0x80 1832 && UTF_COMPOSINGLIKE(p, p + len)) 1833 { 1834 cc = utf_ptr2char(p + len); 1835 for (;;) 1836 { 1837 pcc[i++] = cc; 1838 if (i == MAX_MCO) 1839 break; 1840 len += utf_ptr2len_len(p + len, maxlen - len); 1841 if (len >= maxlen 1842 || p[len] < 0x80 1843 || !utf_iscomposing(cc = utf_ptr2char(p + len))) 1844 break; 1845 } 1846 } 1847 1848 if (i < MAX_MCO) /* last composing char must be 0 */ 1849 pcc[i] = 0; 1850 1851 return c; 1852 } 1853 1854 /* 1855 * Convert the character at screen position "off" to a sequence of bytes. 1856 * Includes the composing characters. 1857 * "buf" must at least have the length MB_MAXBYTES. 1858 * Returns the produced number of bytes. 1859 */ 1860 int 1861 utfc_char2bytes(off, buf) 1862 int off; 1863 char_u *buf; 1864 { 1865 int len; 1866 int i; 1867 1868 len = utf_char2bytes(ScreenLinesUC[off], buf); 1869 for (i = 0; i < Screen_mco; ++i) 1870 { 1871 if (ScreenLinesC[i][off] == 0) 1872 break; 1873 len += utf_char2bytes(ScreenLinesC[i][off], buf + len); 1874 } 1875 return len; 1876 } 1877 1878 /* 1879 * Get the length of a UTF-8 byte sequence, not including any following 1880 * composing characters. 1881 * Returns 0 for "". 1882 * Returns 1 for an illegal byte sequence. 1883 */ 1884 int 1885 utf_ptr2len(p) 1886 char_u *p; 1887 { 1888 int len; 1889 int i; 1890 1891 if (*p == NUL) 1892 return 0; 1893 len = utf8len_tab[*p]; 1894 for (i = 1; i < len; ++i) 1895 if ((p[i] & 0xc0) != 0x80) 1896 return 1; 1897 return len; 1898 } 1899 1900 /* 1901 * Return length of UTF-8 character, obtained from the first byte. 1902 * "b" must be between 0 and 255! 1903 * Returns 1 for an invalid first byte value. 1904 */ 1905 int 1906 utf_byte2len(b) 1907 int b; 1908 { 1909 return utf8len_tab[b]; 1910 } 1911 1912 /* 1913 * Get the length of UTF-8 byte sequence "p[size]". Does not include any 1914 * following composing characters. 1915 * Returns 1 for "". 1916 * Returns 1 for an illegal byte sequence (also in incomplete byte seq.). 1917 * Returns number > "size" for an incomplete byte sequence. 1918 * Never returns zero. 1919 */ 1920 int 1921 utf_ptr2len_len(p, size) 1922 char_u *p; 1923 int size; 1924 { 1925 int len; 1926 int i; 1927 int m; 1928 1929 len = utf8len_tab[*p]; 1930 if (len == 1) 1931 return 1; /* NUL, ascii or illegal lead byte */ 1932 if (len > size) 1933 m = size; /* incomplete byte sequence. */ 1934 else 1935 m = len; 1936 for (i = 1; i < m; ++i) 1937 if ((p[i] & 0xc0) != 0x80) 1938 return 1; 1939 return len; 1940 } 1941 1942 /* 1943 * Return the number of bytes the UTF-8 encoding of the character at "p" takes. 1944 * This includes following composing characters. 1945 */ 1946 int 1947 utfc_ptr2len(p) 1948 char_u *p; 1949 { 1950 int len; 1951 int b0 = *p; 1952 #ifdef FEAT_ARABIC 1953 int prevlen; 1954 #endif 1955 1956 if (b0 == NUL) 1957 return 0; 1958 if (b0 < 0x80 && p[1] < 0x80) /* be quick for ASCII */ 1959 return 1; 1960 1961 /* Skip over first UTF-8 char, stopping at a NUL byte. */ 1962 len = utf_ptr2len(p); 1963 1964 /* Check for illegal byte. */ 1965 if (len == 1 && b0 >= 0x80) 1966 return 1; 1967 1968 /* 1969 * Check for composing characters. We can handle only the first six, but 1970 * skip all of them (otherwise the cursor would get stuck). 1971 */ 1972 #ifdef FEAT_ARABIC 1973 prevlen = 0; 1974 #endif 1975 for (;;) 1976 { 1977 if (p[len] < 0x80 || !UTF_COMPOSINGLIKE(p + prevlen, p + len)) 1978 return len; 1979 1980 /* Skip over composing char */ 1981 #ifdef FEAT_ARABIC 1982 prevlen = len; 1983 #endif 1984 len += utf_ptr2len(p + len); 1985 } 1986 } 1987 1988 /* 1989 * Return the number of bytes the UTF-8 encoding of the character at "p[size]" 1990 * takes. This includes following composing characters. 1991 * Returns 0 for an empty string. 1992 * Returns 1 for an illegal char or an incomplete byte sequence. 1993 */ 1994 int 1995 utfc_ptr2len_len(p, size) 1996 char_u *p; 1997 int size; 1998 { 1999 int len; 2000 #ifdef FEAT_ARABIC 2001 int prevlen; 2002 #endif 2003 2004 if (size < 1 || *p == NUL) 2005 return 0; 2006 if (p[0] < 0x80 && (size == 1 || p[1] < 0x80)) /* be quick for ASCII */ 2007 return 1; 2008 2009 /* Skip over first UTF-8 char, stopping at a NUL byte. */ 2010 len = utf_ptr2len_len(p, size); 2011 2012 /* Check for illegal byte and incomplete byte sequence. */ 2013 if ((len == 1 && p[0] >= 0x80) || len > size) 2014 return 1; 2015 2016 /* 2017 * Check for composing characters. We can handle only the first six, but 2018 * skip all of them (otherwise the cursor would get stuck). 2019 */ 2020 #ifdef FEAT_ARABIC 2021 prevlen = 0; 2022 #endif 2023 while (len < size) 2024 { 2025 int len_next_char; 2026 2027 if (p[len] < 0x80) 2028 break; 2029 2030 /* 2031 * Next character length should not go beyond size to ensure that 2032 * UTF_COMPOSINGLIKE(...) does not read beyond size. 2033 */ 2034 len_next_char = utf_ptr2len_len(p + len, size - len); 2035 if (len_next_char > size - len) 2036 break; 2037 2038 if (!UTF_COMPOSINGLIKE(p + prevlen, p + len)) 2039 break; 2040 2041 /* Skip over composing char */ 2042 #ifdef FEAT_ARABIC 2043 prevlen = len; 2044 #endif 2045 len += len_next_char; 2046 } 2047 return len; 2048 } 2049 2050 /* 2051 * Return the number of bytes the UTF-8 encoding of character "c" takes. 2052 * This does not include composing characters. 2053 */ 2054 int 2055 utf_char2len(c) 2056 int c; 2057 { 2058 if (c < 0x80) 2059 return 1; 2060 if (c < 0x800) 2061 return 2; 2062 if (c < 0x10000) 2063 return 3; 2064 if (c < 0x200000) 2065 return 4; 2066 if (c < 0x4000000) 2067 return 5; 2068 return 6; 2069 } 2070 2071 /* 2072 * Convert Unicode character "c" to UTF-8 string in "buf[]". 2073 * Returns the number of bytes. 2074 * This does not include composing characters. 2075 */ 2076 int 2077 utf_char2bytes(c, buf) 2078 int c; 2079 char_u *buf; 2080 { 2081 if (c < 0x80) /* 7 bits */ 2082 { 2083 buf[0] = c; 2084 return 1; 2085 } 2086 if (c < 0x800) /* 11 bits */ 2087 { 2088 buf[0] = 0xc0 + ((unsigned)c >> 6); 2089 buf[1] = 0x80 + (c & 0x3f); 2090 return 2; 2091 } 2092 if (c < 0x10000) /* 16 bits */ 2093 { 2094 buf[0] = 0xe0 + ((unsigned)c >> 12); 2095 buf[1] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2096 buf[2] = 0x80 + (c & 0x3f); 2097 return 3; 2098 } 2099 if (c < 0x200000) /* 21 bits */ 2100 { 2101 buf[0] = 0xf0 + ((unsigned)c >> 18); 2102 buf[1] = 0x80 + (((unsigned)c >> 12) & 0x3f); 2103 buf[2] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2104 buf[3] = 0x80 + (c & 0x3f); 2105 return 4; 2106 } 2107 if (c < 0x4000000) /* 26 bits */ 2108 { 2109 buf[0] = 0xf8 + ((unsigned)c >> 24); 2110 buf[1] = 0x80 + (((unsigned)c >> 18) & 0x3f); 2111 buf[2] = 0x80 + (((unsigned)c >> 12) & 0x3f); 2112 buf[3] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2113 buf[4] = 0x80 + (c & 0x3f); 2114 return 5; 2115 } 2116 /* 31 bits */ 2117 buf[0] = 0xfc + ((unsigned)c >> 30); 2118 buf[1] = 0x80 + (((unsigned)c >> 24) & 0x3f); 2119 buf[2] = 0x80 + (((unsigned)c >> 18) & 0x3f); 2120 buf[3] = 0x80 + (((unsigned)c >> 12) & 0x3f); 2121 buf[4] = 0x80 + (((unsigned)c >> 6) & 0x3f); 2122 buf[5] = 0x80 + (c & 0x3f); 2123 return 6; 2124 } 2125 2126 /* 2127 * Return TRUE if "c" is a composing UTF-8 character. This means it will be 2128 * drawn on top of the preceding character. 2129 * Based on code from Markus Kuhn. 2130 */ 2131 int 2132 utf_iscomposing(c) 2133 int c; 2134 { 2135 /* Sorted list of non-overlapping intervals. 2136 * Generated by ../runtime/tools/unicode.vim. */ 2137 static struct interval combining[] = 2138 { 2139 {0x0300, 0x036f}, 2140 {0x0483, 0x0489}, 2141 {0x0591, 0x05bd}, 2142 {0x05bf, 0x05bf}, 2143 {0x05c1, 0x05c2}, 2144 {0x05c4, 0x05c5}, 2145 {0x05c7, 0x05c7}, 2146 {0x0610, 0x061a}, 2147 {0x064b, 0x065e}, 2148 {0x0670, 0x0670}, 2149 {0x06d6, 0x06dc}, 2150 {0x06de, 0x06e4}, 2151 {0x06e7, 0x06e8}, 2152 {0x06ea, 0x06ed}, 2153 {0x0711, 0x0711}, 2154 {0x0730, 0x074a}, 2155 {0x07a6, 0x07b0}, 2156 {0x07eb, 0x07f3}, 2157 {0x0816, 0x0819}, 2158 {0x081b, 0x0823}, 2159 {0x0825, 0x0827}, 2160 {0x0829, 0x082d}, 2161 {0x0900, 0x0903}, 2162 {0x093c, 0x093c}, 2163 {0x093e, 0x094e}, 2164 {0x0951, 0x0955}, 2165 {0x0962, 0x0963}, 2166 {0x0981, 0x0983}, 2167 {0x09bc, 0x09bc}, 2168 {0x09be, 0x09c4}, 2169 {0x09c7, 0x09c8}, 2170 {0x09cb, 0x09cd}, 2171 {0x09d7, 0x09d7}, 2172 {0x09e2, 0x09e3}, 2173 {0x0a01, 0x0a03}, 2174 {0x0a3c, 0x0a3c}, 2175 {0x0a3e, 0x0a42}, 2176 {0x0a47, 0x0a48}, 2177 {0x0a4b, 0x0a4d}, 2178 {0x0a51, 0x0a51}, 2179 {0x0a70, 0x0a71}, 2180 {0x0a75, 0x0a75}, 2181 {0x0a81, 0x0a83}, 2182 {0x0abc, 0x0abc}, 2183 {0x0abe, 0x0ac5}, 2184 {0x0ac7, 0x0ac9}, 2185 {0x0acb, 0x0acd}, 2186 {0x0ae2, 0x0ae3}, 2187 {0x0b01, 0x0b03}, 2188 {0x0b3c, 0x0b3c}, 2189 {0x0b3e, 0x0b44}, 2190 {0x0b47, 0x0b48}, 2191 {0x0b4b, 0x0b4d}, 2192 {0x0b56, 0x0b57}, 2193 {0x0b62, 0x0b63}, 2194 {0x0b82, 0x0b82}, 2195 {0x0bbe, 0x0bc2}, 2196 {0x0bc6, 0x0bc8}, 2197 {0x0bca, 0x0bcd}, 2198 {0x0bd7, 0x0bd7}, 2199 {0x0c01, 0x0c03}, 2200 {0x0c3e, 0x0c44}, 2201 {0x0c46, 0x0c48}, 2202 {0x0c4a, 0x0c4d}, 2203 {0x0c55, 0x0c56}, 2204 {0x0c62, 0x0c63}, 2205 {0x0c82, 0x0c83}, 2206 {0x0cbc, 0x0cbc}, 2207 {0x0cbe, 0x0cc4}, 2208 {0x0cc6, 0x0cc8}, 2209 {0x0cca, 0x0ccd}, 2210 {0x0cd5, 0x0cd6}, 2211 {0x0ce2, 0x0ce3}, 2212 {0x0d02, 0x0d03}, 2213 {0x0d3e, 0x0d44}, 2214 {0x0d46, 0x0d48}, 2215 {0x0d4a, 0x0d4d}, 2216 {0x0d57, 0x0d57}, 2217 {0x0d62, 0x0d63}, 2218 {0x0d82, 0x0d83}, 2219 {0x0dca, 0x0dca}, 2220 {0x0dcf, 0x0dd4}, 2221 {0x0dd6, 0x0dd6}, 2222 {0x0dd8, 0x0ddf}, 2223 {0x0df2, 0x0df3}, 2224 {0x0e31, 0x0e31}, 2225 {0x0e34, 0x0e3a}, 2226 {0x0e47, 0x0e4e}, 2227 {0x0eb1, 0x0eb1}, 2228 {0x0eb4, 0x0eb9}, 2229 {0x0ebb, 0x0ebc}, 2230 {0x0ec8, 0x0ecd}, 2231 {0x0f18, 0x0f19}, 2232 {0x0f35, 0x0f35}, 2233 {0x0f37, 0x0f37}, 2234 {0x0f39, 0x0f39}, 2235 {0x0f3e, 0x0f3f}, 2236 {0x0f71, 0x0f84}, 2237 {0x0f86, 0x0f87}, 2238 {0x0f90, 0x0f97}, 2239 {0x0f99, 0x0fbc}, 2240 {0x0fc6, 0x0fc6}, 2241 {0x102b, 0x103e}, 2242 {0x1056, 0x1059}, 2243 {0x105e, 0x1060}, 2244 {0x1062, 0x1064}, 2245 {0x1067, 0x106d}, 2246 {0x1071, 0x1074}, 2247 {0x1082, 0x108d}, 2248 {0x108f, 0x108f}, 2249 {0x109a, 0x109d}, 2250 {0x135f, 0x135f}, 2251 {0x1712, 0x1714}, 2252 {0x1732, 0x1734}, 2253 {0x1752, 0x1753}, 2254 {0x1772, 0x1773}, 2255 {0x17b6, 0x17d3}, 2256 {0x17dd, 0x17dd}, 2257 {0x180b, 0x180d}, 2258 {0x18a9, 0x18a9}, 2259 {0x1920, 0x192b}, 2260 {0x1930, 0x193b}, 2261 {0x19b0, 0x19c0}, 2262 {0x19c8, 0x19c9}, 2263 {0x1a17, 0x1a1b}, 2264 {0x1a55, 0x1a5e}, 2265 {0x1a60, 0x1a7c}, 2266 {0x1a7f, 0x1a7f}, 2267 {0x1b00, 0x1b04}, 2268 {0x1b34, 0x1b44}, 2269 {0x1b6b, 0x1b73}, 2270 {0x1b80, 0x1b82}, 2271 {0x1ba1, 0x1baa}, 2272 {0x1c24, 0x1c37}, 2273 {0x1cd0, 0x1cd2}, 2274 {0x1cd4, 0x1ce8}, 2275 {0x1ced, 0x1ced}, 2276 {0x1cf2, 0x1cf2}, 2277 {0x1dc0, 0x1de6}, 2278 {0x1dfd, 0x1dff}, 2279 {0x20d0, 0x20f0}, 2280 {0x2cef, 0x2cf1}, 2281 {0x2de0, 0x2dff}, 2282 {0x302a, 0x302f}, 2283 {0x3099, 0x309a}, 2284 {0xa66f, 0xa672}, 2285 {0xa67c, 0xa67d}, 2286 {0xa6f0, 0xa6f1}, 2287 {0xa802, 0xa802}, 2288 {0xa806, 0xa806}, 2289 {0xa80b, 0xa80b}, 2290 {0xa823, 0xa827}, 2291 {0xa880, 0xa881}, 2292 {0xa8b4, 0xa8c4}, 2293 {0xa8e0, 0xa8f1}, 2294 {0xa926, 0xa92d}, 2295 {0xa947, 0xa953}, 2296 {0xa980, 0xa983}, 2297 {0xa9b3, 0xa9c0}, 2298 {0xaa29, 0xaa36}, 2299 {0xaa43, 0xaa43}, 2300 {0xaa4c, 0xaa4d}, 2301 {0xaa7b, 0xaa7b}, 2302 {0xaab0, 0xaab0}, 2303 {0xaab2, 0xaab4}, 2304 {0xaab7, 0xaab8}, 2305 {0xaabe, 0xaabf}, 2306 {0xaac1, 0xaac1}, 2307 {0xabe3, 0xabea}, 2308 {0xabec, 0xabed}, 2309 {0xfb1e, 0xfb1e}, 2310 {0xfe00, 0xfe0f}, 2311 {0xfe20, 0xfe26}, 2312 {0x101fd, 0x101fd}, 2313 {0x10a01, 0x10a03}, 2314 {0x10a05, 0x10a06}, 2315 {0x10a0c, 0x10a0f}, 2316 {0x10a38, 0x10a3a}, 2317 {0x10a3f, 0x10a3f}, 2318 {0x11080, 0x11082}, 2319 {0x110b0, 0x110ba}, 2320 {0x1d165, 0x1d169}, 2321 {0x1d16d, 0x1d172}, 2322 {0x1d17b, 0x1d182}, 2323 {0x1d185, 0x1d18b}, 2324 {0x1d1aa, 0x1d1ad}, 2325 {0x1d242, 0x1d244}, 2326 {0xe0100, 0xe01ef} 2327 }; 2328 2329 return intable(combining, sizeof(combining), c); 2330 } 2331 2332 /* 2333 * Return TRUE for characters that can be displayed in a normal way. 2334 * Only for characters of 0x100 and above! 2335 */ 2336 int 2337 utf_printable(c) 2338 int c; 2339 { 2340 #ifdef USE_WCHAR_FUNCTIONS 2341 /* 2342 * Assume the iswprint() library function works better than our own stuff. 2343 */ 2344 return iswprint(c); 2345 #else 2346 /* Sorted list of non-overlapping intervals. 2347 * 0xd800-0xdfff is reserved for UTF-16, actually illegal. */ 2348 static struct interval nonprint[] = 2349 { 2350 {0x070f, 0x070f}, {0x180b, 0x180e}, {0x200b, 0x200f}, {0x202a, 0x202e}, 2351 {0x206a, 0x206f}, {0xd800, 0xdfff}, {0xfeff, 0xfeff}, {0xfff9, 0xfffb}, 2352 {0xfffe, 0xffff} 2353 }; 2354 2355 return !intable(nonprint, sizeof(nonprint), c); 2356 #endif 2357 } 2358 2359 /* 2360 * Get class of a Unicode character. 2361 * 0: white space 2362 * 1: punctuation 2363 * 2 or bigger: some class of word character. 2364 */ 2365 int 2366 utf_class(c) 2367 int c; 2368 { 2369 /* sorted list of non-overlapping intervals */ 2370 static struct clinterval 2371 { 2372 unsigned short first; 2373 unsigned short last; 2374 unsigned short class; 2375 } classes[] = 2376 { 2377 {0x037e, 0x037e, 1}, /* Greek question mark */ 2378 {0x0387, 0x0387, 1}, /* Greek ano teleia */ 2379 {0x055a, 0x055f, 1}, /* Armenian punctuation */ 2380 {0x0589, 0x0589, 1}, /* Armenian full stop */ 2381 {0x05be, 0x05be, 1}, 2382 {0x05c0, 0x05c0, 1}, 2383 {0x05c3, 0x05c3, 1}, 2384 {0x05f3, 0x05f4, 1}, 2385 {0x060c, 0x060c, 1}, 2386 {0x061b, 0x061b, 1}, 2387 {0x061f, 0x061f, 1}, 2388 {0x066a, 0x066d, 1}, 2389 {0x06d4, 0x06d4, 1}, 2390 {0x0700, 0x070d, 1}, /* Syriac punctuation */ 2391 {0x0964, 0x0965, 1}, 2392 {0x0970, 0x0970, 1}, 2393 {0x0df4, 0x0df4, 1}, 2394 {0x0e4f, 0x0e4f, 1}, 2395 {0x0e5a, 0x0e5b, 1}, 2396 {0x0f04, 0x0f12, 1}, 2397 {0x0f3a, 0x0f3d, 1}, 2398 {0x0f85, 0x0f85, 1}, 2399 {0x104a, 0x104f, 1}, /* Myanmar punctuation */ 2400 {0x10fb, 0x10fb, 1}, /* Georgian punctuation */ 2401 {0x1361, 0x1368, 1}, /* Ethiopic punctuation */ 2402 {0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */ 2403 {0x1680, 0x1680, 0}, 2404 {0x169b, 0x169c, 1}, 2405 {0x16eb, 0x16ed, 1}, 2406 {0x1735, 0x1736, 1}, 2407 {0x17d4, 0x17dc, 1}, /* Khmer punctuation */ 2408 {0x1800, 0x180a, 1}, /* Mongolian punctuation */ 2409 {0x2000, 0x200b, 0}, /* spaces */ 2410 {0x200c, 0x2027, 1}, /* punctuation and symbols */ 2411 {0x2028, 0x2029, 0}, 2412 {0x202a, 0x202e, 1}, /* punctuation and symbols */ 2413 {0x202f, 0x202f, 0}, 2414 {0x2030, 0x205e, 1}, /* punctuation and symbols */ 2415 {0x205f, 0x205f, 0}, 2416 {0x2060, 0x27ff, 1}, /* punctuation and symbols */ 2417 {0x2070, 0x207f, 0x2070}, /* superscript */ 2418 {0x2080, 0x2094, 0x2080}, /* subscript */ 2419 {0x20a0, 0x27ff, 1}, /* all kinds of symbols */ 2420 {0x2800, 0x28ff, 0x2800}, /* braille */ 2421 {0x2900, 0x2998, 1}, /* arrows, brackets, etc. */ 2422 {0x29d8, 0x29db, 1}, 2423 {0x29fc, 0x29fd, 1}, 2424 {0x3000, 0x3000, 0}, /* ideographic space */ 2425 {0x3001, 0x3020, 1}, /* ideographic punctuation */ 2426 {0x3030, 0x3030, 1}, 2427 {0x303d, 0x303d, 1}, 2428 {0x3040, 0x309f, 0x3040}, /* Hiragana */ 2429 {0x30a0, 0x30ff, 0x30a0}, /* Katakana */ 2430 {0x3300, 0x9fff, 0x4e00}, /* CJK Ideographs */ 2431 {0xac00, 0xd7a3, 0xac00}, /* Hangul Syllables */ 2432 {0xf900, 0xfaff, 0x4e00}, /* CJK Ideographs */ 2433 {0xfd3e, 0xfd3f, 1}, 2434 {0xfe30, 0xfe6b, 1}, /* punctuation forms */ 2435 {0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */ 2436 {0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */ 2437 {0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */ 2438 {0xff5b, 0xff65, 1}, /* half/fullwidth ASCII */ 2439 }; 2440 int bot = 0; 2441 int top = sizeof(classes) / sizeof(struct clinterval) - 1; 2442 int mid; 2443 2444 /* First quick check for Latin1 characters, use 'iskeyword'. */ 2445 if (c < 0x100) 2446 { 2447 if (c == ' ' || c == '\t' || c == NUL || c == 0xa0) 2448 return 0; /* blank */ 2449 if (vim_iswordc(c)) 2450 return 2; /* word character */ 2451 return 1; /* punctuation */ 2452 } 2453 2454 /* binary search in table */ 2455 while (top >= bot) 2456 { 2457 mid = (bot + top) / 2; 2458 if (classes[mid].last < c) 2459 bot = mid + 1; 2460 else if (classes[mid].first > c) 2461 top = mid - 1; 2462 else 2463 return (int)classes[mid].class; 2464 } 2465 2466 /* most other characters are "word" characters */ 2467 return 2; 2468 } 2469 2470 /* 2471 * Code for Unicode case-dependent operations. Based on notes in 2472 * http://www.unicode.org/Public/UNIDATA/CaseFolding.txt 2473 * This code uses simple case folding, not full case folding. 2474 * Last updated for Unicode 5.2. 2475 */ 2476 2477 /* 2478 * The following tables are built by ../runtime/tools/unicode.vim. 2479 * They must be in numeric order, because we use binary search. 2480 * An entry such as {0x41,0x5a,1,32} means that Unicode characters in the 2481 * range from 0x41 to 0x5a inclusive, stepping by 1, are changed to 2482 * folded/upper/lower by adding 32. 2483 */ 2484 typedef struct 2485 { 2486 int rangeStart; 2487 int rangeEnd; 2488 int step; 2489 int offset; 2490 } convertStruct; 2491 2492 static convertStruct foldCase[] = 2493 { 2494 {0x41,0x5a,1,32}, 2495 {0xb5,0xb5,-1,775}, 2496 {0xc0,0xd6,1,32}, 2497 {0xd8,0xde,1,32}, 2498 {0x100,0x12e,2,1}, 2499 {0x132,0x136,2,1}, 2500 {0x139,0x147,2,1}, 2501 {0x14a,0x176,2,1}, 2502 {0x178,0x178,-1,-121}, 2503 {0x179,0x17d,2,1}, 2504 {0x17f,0x17f,-1,-268}, 2505 {0x181,0x181,-1,210}, 2506 {0x182,0x184,2,1}, 2507 {0x186,0x186,-1,206}, 2508 {0x187,0x187,-1,1}, 2509 {0x189,0x18a,1,205}, 2510 {0x18b,0x18b,-1,1}, 2511 {0x18e,0x18e,-1,79}, 2512 {0x18f,0x18f,-1,202}, 2513 {0x190,0x190,-1,203}, 2514 {0x191,0x191,-1,1}, 2515 {0x193,0x193,-1,205}, 2516 {0x194,0x194,-1,207}, 2517 {0x196,0x196,-1,211}, 2518 {0x197,0x197,-1,209}, 2519 {0x198,0x198,-1,1}, 2520 {0x19c,0x19c,-1,211}, 2521 {0x19d,0x19d,-1,213}, 2522 {0x19f,0x19f,-1,214}, 2523 {0x1a0,0x1a4,2,1}, 2524 {0x1a6,0x1a6,-1,218}, 2525 {0x1a7,0x1a7,-1,1}, 2526 {0x1a9,0x1a9,-1,218}, 2527 {0x1ac,0x1ac,-1,1}, 2528 {0x1ae,0x1ae,-1,218}, 2529 {0x1af,0x1af,-1,1}, 2530 {0x1b1,0x1b2,1,217}, 2531 {0x1b3,0x1b5,2,1}, 2532 {0x1b7,0x1b7,-1,219}, 2533 {0x1b8,0x1bc,4,1}, 2534 {0x1c4,0x1c4,-1,2}, 2535 {0x1c5,0x1c5,-1,1}, 2536 {0x1c7,0x1c7,-1,2}, 2537 {0x1c8,0x1c8,-1,1}, 2538 {0x1ca,0x1ca,-1,2}, 2539 {0x1cb,0x1db,2,1}, 2540 {0x1de,0x1ee,2,1}, 2541 {0x1f1,0x1f1,-1,2}, 2542 {0x1f2,0x1f4,2,1}, 2543 {0x1f6,0x1f6,-1,-97}, 2544 {0x1f7,0x1f7,-1,-56}, 2545 {0x1f8,0x21e,2,1}, 2546 {0x220,0x220,-1,-130}, 2547 {0x222,0x232,2,1}, 2548 {0x23a,0x23a,-1,10795}, 2549 {0x23b,0x23b,-1,1}, 2550 {0x23d,0x23d,-1,-163}, 2551 {0x23e,0x23e,-1,10792}, 2552 {0x241,0x241,-1,1}, 2553 {0x243,0x243,-1,-195}, 2554 {0x244,0x244,-1,69}, 2555 {0x245,0x245,-1,71}, 2556 {0x246,0x24e,2,1}, 2557 {0x345,0x345,-1,116}, 2558 {0x370,0x372,2,1}, 2559 {0x376,0x376,-1,1}, 2560 {0x386,0x386,-1,38}, 2561 {0x388,0x38a,1,37}, 2562 {0x38c,0x38c,-1,64}, 2563 {0x38e,0x38f,1,63}, 2564 {0x391,0x3a1,1,32}, 2565 {0x3a3,0x3ab,1,32}, 2566 {0x3c2,0x3c2,-1,1}, 2567 {0x3cf,0x3cf,-1,8}, 2568 {0x3d0,0x3d0,-1,-30}, 2569 {0x3d1,0x3d1,-1,-25}, 2570 {0x3d5,0x3d5,-1,-15}, 2571 {0x3d6,0x3d6,-1,-22}, 2572 {0x3d8,0x3ee,2,1}, 2573 {0x3f0,0x3f0,-1,-54}, 2574 {0x3f1,0x3f1,-1,-48}, 2575 {0x3f4,0x3f4,-1,-60}, 2576 {0x3f5,0x3f5,-1,-64}, 2577 {0x3f7,0x3f7,-1,1}, 2578 {0x3f9,0x3f9,-1,-7}, 2579 {0x3fa,0x3fa,-1,1}, 2580 {0x3fd,0x3ff,1,-130}, 2581 {0x400,0x40f,1,80}, 2582 {0x410,0x42f,1,32}, 2583 {0x460,0x480,2,1}, 2584 {0x48a,0x4be,2,1}, 2585 {0x4c0,0x4c0,-1,15}, 2586 {0x4c1,0x4cd,2,1}, 2587 {0x4d0,0x524,2,1}, 2588 {0x531,0x556,1,48}, 2589 {0x10a0,0x10c5,1,7264}, 2590 {0x1e00,0x1e94,2,1}, 2591 {0x1e9b,0x1e9b,-1,-58}, 2592 {0x1e9e,0x1e9e,-1,-7615}, 2593 {0x1ea0,0x1efe,2,1}, 2594 {0x1f08,0x1f0f,1,-8}, 2595 {0x1f18,0x1f1d,1,-8}, 2596 {0x1f28,0x1f2f,1,-8}, 2597 {0x1f38,0x1f3f,1,-8}, 2598 {0x1f48,0x1f4d,1,-8}, 2599 {0x1f59,0x1f5f,2,-8}, 2600 {0x1f68,0x1f6f,1,-8}, 2601 {0x1f88,0x1f8f,1,-8}, 2602 {0x1f98,0x1f9f,1,-8}, 2603 {0x1fa8,0x1faf,1,-8}, 2604 {0x1fb8,0x1fb9,1,-8}, 2605 {0x1fba,0x1fbb,1,-74}, 2606 {0x1fbc,0x1fbc,-1,-9}, 2607 {0x1fbe,0x1fbe,-1,-7173}, 2608 {0x1fc8,0x1fcb,1,-86}, 2609 {0x1fcc,0x1fcc,-1,-9}, 2610 {0x1fd8,0x1fd9,1,-8}, 2611 {0x1fda,0x1fdb,1,-100}, 2612 {0x1fe8,0x1fe9,1,-8}, 2613 {0x1fea,0x1feb,1,-112}, 2614 {0x1fec,0x1fec,-1,-7}, 2615 {0x1ff8,0x1ff9,1,-128}, 2616 {0x1ffa,0x1ffb,1,-126}, 2617 {0x1ffc,0x1ffc,-1,-9}, 2618 {0x2126,0x2126,-1,-7517}, 2619 {0x212a,0x212a,-1,-8383}, 2620 {0x212b,0x212b,-1,-8262}, 2621 {0x2132,0x2132,-1,28}, 2622 {0x2160,0x216f,1,16}, 2623 {0x2183,0x2183,-1,1}, 2624 {0x24b6,0x24cf,1,26}, 2625 {0x2c00,0x2c2e,1,48}, 2626 {0x2c60,0x2c60,-1,1}, 2627 {0x2c62,0x2c62,-1,-10743}, 2628 {0x2c63,0x2c63,-1,-3814}, 2629 {0x2c64,0x2c64,-1,-10727}, 2630 {0x2c67,0x2c6b,2,1}, 2631 {0x2c6d,0x2c6d,-1,-10780}, 2632 {0x2c6e,0x2c6e,-1,-10749}, 2633 {0x2c6f,0x2c6f,-1,-10783}, 2634 {0x2c70,0x2c70,-1,-10782}, 2635 {0x2c72,0x2c75,3,1}, 2636 {0x2c7e,0x2c7f,1,-10815}, 2637 {0x2c80,0x2ce2,2,1}, 2638 {0x2ceb,0x2ced,2,1}, 2639 {0xa640,0xa65e,2,1}, 2640 {0xa662,0xa66c,2,1}, 2641 {0xa680,0xa696,2,1}, 2642 {0xa722,0xa72e,2,1}, 2643 {0xa732,0xa76e,2,1}, 2644 {0xa779,0xa77b,2,1}, 2645 {0xa77d,0xa77d,-1,-35332}, 2646 {0xa77e,0xa786,2,1}, 2647 {0xa78b,0xa78b,-1,1}, 2648 {0xff21,0xff3a,1,32}, 2649 {0x10400,0x10427,1,40} 2650 }; 2651 2652 static int utf_convert(int a, convertStruct table[], int tableSize); 2653 2654 /* 2655 * Generic conversion function for case operations. 2656 * Return the converted equivalent of "a", which is a UCS-4 character. Use 2657 * the given conversion "table". Uses binary search on "table". 2658 */ 2659 static int 2660 utf_convert(a, table, tableSize) 2661 int a; 2662 convertStruct table[]; 2663 int tableSize; 2664 { 2665 int start, mid, end; /* indices into table */ 2666 2667 start = 0; 2668 end = tableSize / sizeof(convertStruct); 2669 while (start < end) 2670 { 2671 /* need to search further */ 2672 mid = (end + start) /2; 2673 if (table[mid].rangeEnd < a) 2674 start = mid + 1; 2675 else 2676 end = mid; 2677 } 2678 if (table[start].rangeStart <= a && a <= table[start].rangeEnd 2679 && (a - table[start].rangeStart) % table[start].step == 0) 2680 return (a + table[start].offset); 2681 else 2682 return a; 2683 } 2684 2685 /* 2686 * Return the folded-case equivalent of "a", which is a UCS-4 character. Uses 2687 * simple case folding. 2688 */ 2689 int 2690 utf_fold(a) 2691 int a; 2692 { 2693 return utf_convert(a, foldCase, sizeof(foldCase)); 2694 } 2695 2696 static convertStruct toLower[] = 2697 { 2698 {0x41,0x5a,1,32}, 2699 {0xc0,0xd6,1,32}, 2700 {0xd8,0xde,1,32}, 2701 {0x100,0x12e,2,1}, 2702 {0x130,0x130,-1,-199}, 2703 {0x132,0x136,2,1}, 2704 {0x139,0x147,2,1}, 2705 {0x14a,0x176,2,1}, 2706 {0x178,0x178,-1,-121}, 2707 {0x179,0x17d,2,1}, 2708 {0x181,0x181,-1,210}, 2709 {0x182,0x184,2,1}, 2710 {0x186,0x186,-1,206}, 2711 {0x187,0x187,-1,1}, 2712 {0x189,0x18a,1,205}, 2713 {0x18b,0x18b,-1,1}, 2714 {0x18e,0x18e,-1,79}, 2715 {0x18f,0x18f,-1,202}, 2716 {0x190,0x190,-1,203}, 2717 {0x191,0x191,-1,1}, 2718 {0x193,0x193,-1,205}, 2719 {0x194,0x194,-1,207}, 2720 {0x196,0x196,-1,211}, 2721 {0x197,0x197,-1,209}, 2722 {0x198,0x198,-1,1}, 2723 {0x19c,0x19c,-1,211}, 2724 {0x19d,0x19d,-1,213}, 2725 {0x19f,0x19f,-1,214}, 2726 {0x1a0,0x1a4,2,1}, 2727 {0x1a6,0x1a6,-1,218}, 2728 {0x1a7,0x1a7,-1,1}, 2729 {0x1a9,0x1a9,-1,218}, 2730 {0x1ac,0x1ac,-1,1}, 2731 {0x1ae,0x1ae,-1,218}, 2732 {0x1af,0x1af,-1,1}, 2733 {0x1b1,0x1b2,1,217}, 2734 {0x1b3,0x1b5,2,1}, 2735 {0x1b7,0x1b7,-1,219}, 2736 {0x1b8,0x1bc,4,1}, 2737 {0x1c4,0x1c4,-1,2}, 2738 {0x1c5,0x1c5,-1,1}, 2739 {0x1c7,0x1c7,-1,2}, 2740 {0x1c8,0x1c8,-1,1}, 2741 {0x1ca,0x1ca,-1,2}, 2742 {0x1cb,0x1db,2,1}, 2743 {0x1de,0x1ee,2,1}, 2744 {0x1f1,0x1f1,-1,2}, 2745 {0x1f2,0x1f4,2,1}, 2746 {0x1f6,0x1f6,-1,-97}, 2747 {0x1f7,0x1f7,-1,-56}, 2748 {0x1f8,0x21e,2,1}, 2749 {0x220,0x220,-1,-130}, 2750 {0x222,0x232,2,1}, 2751 {0x23a,0x23a,-1,10795}, 2752 {0x23b,0x23b,-1,1}, 2753 {0x23d,0x23d,-1,-163}, 2754 {0x23e,0x23e,-1,10792}, 2755 {0x241,0x241,-1,1}, 2756 {0x243,0x243,-1,-195}, 2757 {0x244,0x244,-1,69}, 2758 {0x245,0x245,-1,71}, 2759 {0x246,0x24e,2,1}, 2760 {0x370,0x372,2,1}, 2761 {0x376,0x376,-1,1}, 2762 {0x386,0x386,-1,38}, 2763 {0x388,0x38a,1,37}, 2764 {0x38c,0x38c,-1,64}, 2765 {0x38e,0x38f,1,63}, 2766 {0x391,0x3a1,1,32}, 2767 {0x3a3,0x3ab,1,32}, 2768 {0x3cf,0x3cf,-1,8}, 2769 {0x3d8,0x3ee,2,1}, 2770 {0x3f4,0x3f4,-1,-60}, 2771 {0x3f7,0x3f7,-1,1}, 2772 {0x3f9,0x3f9,-1,-7}, 2773 {0x3fa,0x3fa,-1,1}, 2774 {0x3fd,0x3ff,1,-130}, 2775 {0x400,0x40f,1,80}, 2776 {0x410,0x42f,1,32}, 2777 {0x460,0x480,2,1}, 2778 {0x48a,0x4be,2,1}, 2779 {0x4c0,0x4c0,-1,15}, 2780 {0x4c1,0x4cd,2,1}, 2781 {0x4d0,0x524,2,1}, 2782 {0x531,0x556,1,48}, 2783 {0x10a0,0x10c5,1,7264}, 2784 {0x1e00,0x1e94,2,1}, 2785 {0x1e9e,0x1e9e,-1,-7615}, 2786 {0x1ea0,0x1efe,2,1}, 2787 {0x1f08,0x1f0f,1,-8}, 2788 {0x1f18,0x1f1d,1,-8}, 2789 {0x1f28,0x1f2f,1,-8}, 2790 {0x1f38,0x1f3f,1,-8}, 2791 {0x1f48,0x1f4d,1,-8}, 2792 {0x1f59,0x1f5f,2,-8}, 2793 {0x1f68,0x1f6f,1,-8}, 2794 {0x1f88,0x1f8f,1,-8}, 2795 {0x1f98,0x1f9f,1,-8}, 2796 {0x1fa8,0x1faf,1,-8}, 2797 {0x1fb8,0x1fb9,1,-8}, 2798 {0x1fba,0x1fbb,1,-74}, 2799 {0x1fbc,0x1fbc,-1,-9}, 2800 {0x1fc8,0x1fcb,1,-86}, 2801 {0x1fcc,0x1fcc,-1,-9}, 2802 {0x1fd8,0x1fd9,1,-8}, 2803 {0x1fda,0x1fdb,1,-100}, 2804 {0x1fe8,0x1fe9,1,-8}, 2805 {0x1fea,0x1feb,1,-112}, 2806 {0x1fec,0x1fec,-1,-7}, 2807 {0x1ff8,0x1ff9,1,-128}, 2808 {0x1ffa,0x1ffb,1,-126}, 2809 {0x1ffc,0x1ffc,-1,-9}, 2810 {0x2126,0x2126,-1,-7517}, 2811 {0x212a,0x212a,-1,-8383}, 2812 {0x212b,0x212b,-1,-8262}, 2813 {0x2132,0x2132,-1,28}, 2814 {0x2160,0x216f,1,16}, 2815 {0x2183,0x2183,-1,1}, 2816 {0x24b6,0x24cf,1,26}, 2817 {0x2c00,0x2c2e,1,48}, 2818 {0x2c60,0x2c60,-1,1}, 2819 {0x2c62,0x2c62,-1,-10743}, 2820 {0x2c63,0x2c63,-1,-3814}, 2821 {0x2c64,0x2c64,-1,-10727}, 2822 {0x2c67,0x2c6b,2,1}, 2823 {0x2c6d,0x2c6d,-1,-10780}, 2824 {0x2c6e,0x2c6e,-1,-10749}, 2825 {0x2c6f,0x2c6f,-1,-10783}, 2826 {0x2c70,0x2c70,-1,-10782}, 2827 {0x2c72,0x2c75,3,1}, 2828 {0x2c7e,0x2c7f,1,-10815}, 2829 {0x2c80,0x2ce2,2,1}, 2830 {0x2ceb,0x2ced,2,1}, 2831 {0xa640,0xa65e,2,1}, 2832 {0xa662,0xa66c,2,1}, 2833 {0xa680,0xa696,2,1}, 2834 {0xa722,0xa72e,2,1}, 2835 {0xa732,0xa76e,2,1}, 2836 {0xa779,0xa77b,2,1}, 2837 {0xa77d,0xa77d,-1,-35332}, 2838 {0xa77e,0xa786,2,1}, 2839 {0xa78b,0xa78b,-1,1}, 2840 {0xff21,0xff3a,1,32}, 2841 {0x10400,0x10427,1,40} 2842 }; 2843 2844 static convertStruct toUpper[] = 2845 { 2846 {0x61,0x7a,1,-32}, 2847 {0xb5,0xb5,-1,743}, 2848 {0xe0,0xf6,1,-32}, 2849 {0xf8,0xfe,1,-32}, 2850 {0xff,0xff,-1,121}, 2851 {0x101,0x12f,2,-1}, 2852 {0x131,0x131,-1,-232}, 2853 {0x133,0x137,2,-1}, 2854 {0x13a,0x148,2,-1}, 2855 {0x14b,0x177,2,-1}, 2856 {0x17a,0x17e,2,-1}, 2857 {0x17f,0x17f,-1,-300}, 2858 {0x180,0x180,-1,195}, 2859 {0x183,0x185,2,-1}, 2860 {0x188,0x18c,4,-1}, 2861 {0x192,0x192,-1,-1}, 2862 {0x195,0x195,-1,97}, 2863 {0x199,0x199,-1,-1}, 2864 {0x19a,0x19a,-1,163}, 2865 {0x19e,0x19e,-1,130}, 2866 {0x1a1,0x1a5,2,-1}, 2867 {0x1a8,0x1ad,5,-1}, 2868 {0x1b0,0x1b4,4,-1}, 2869 {0x1b6,0x1b9,3,-1}, 2870 {0x1bd,0x1bd,-1,-1}, 2871 {0x1bf,0x1bf,-1,56}, 2872 {0x1c5,0x1c5,-1,-1}, 2873 {0x1c6,0x1c6,-1,-2}, 2874 {0x1c8,0x1c8,-1,-1}, 2875 {0x1c9,0x1c9,-1,-2}, 2876 {0x1cb,0x1cb,-1,-1}, 2877 {0x1cc,0x1cc,-1,-2}, 2878 {0x1ce,0x1dc,2,-1}, 2879 {0x1dd,0x1dd,-1,-79}, 2880 {0x1df,0x1ef,2,-1}, 2881 {0x1f2,0x1f2,-1,-1}, 2882 {0x1f3,0x1f3,-1,-2}, 2883 {0x1f5,0x1f9,4,-1}, 2884 {0x1fb,0x21f,2,-1}, 2885 {0x223,0x233,2,-1}, 2886 {0x23c,0x23c,-1,-1}, 2887 {0x23f,0x240,1,10815}, 2888 {0x242,0x247,5,-1}, 2889 {0x249,0x24f,2,-1}, 2890 {0x250,0x250,-1,10783}, 2891 {0x251,0x251,-1,10780}, 2892 {0x252,0x252,-1,10782}, 2893 {0x253,0x253,-1,-210}, 2894 {0x254,0x254,-1,-206}, 2895 {0x256,0x257,1,-205}, 2896 {0x259,0x259,-1,-202}, 2897 {0x25b,0x25b,-1,-203}, 2898 {0x260,0x260,-1,-205}, 2899 {0x263,0x263,-1,-207}, 2900 {0x268,0x268,-1,-209}, 2901 {0x269,0x269,-1,-211}, 2902 {0x26b,0x26b,-1,10743}, 2903 {0x26f,0x26f,-1,-211}, 2904 {0x271,0x271,-1,10749}, 2905 {0x272,0x272,-1,-213}, 2906 {0x275,0x275,-1,-214}, 2907 {0x27d,0x27d,-1,10727}, 2908 {0x280,0x283,3,-218}, 2909 {0x288,0x288,-1,-218}, 2910 {0x289,0x289,-1,-69}, 2911 {0x28a,0x28b,1,-217}, 2912 {0x28c,0x28c,-1,-71}, 2913 {0x292,0x292,-1,-219}, 2914 {0x345,0x345,-1,84}, 2915 {0x371,0x373,2,-1}, 2916 {0x377,0x377,-1,-1}, 2917 {0x37b,0x37d,1,130}, 2918 {0x3ac,0x3ac,-1,-38}, 2919 {0x3ad,0x3af,1,-37}, 2920 {0x3b1,0x3c1,1,-32}, 2921 {0x3c2,0x3c2,-1,-31}, 2922 {0x3c3,0x3cb,1,-32}, 2923 {0x3cc,0x3cc,-1,-64}, 2924 {0x3cd,0x3ce,1,-63}, 2925 {0x3d0,0x3d0,-1,-62}, 2926 {0x3d1,0x3d1,-1,-57}, 2927 {0x3d5,0x3d5,-1,-47}, 2928 {0x3d6,0x3d6,-1,-54}, 2929 {0x3d7,0x3d7,-1,-8}, 2930 {0x3d9,0x3ef,2,-1}, 2931 {0x3f0,0x3f0,-1,-86}, 2932 {0x3f1,0x3f1,-1,-80}, 2933 {0x3f2,0x3f2,-1,7}, 2934 {0x3f5,0x3f5,-1,-96}, 2935 {0x3f8,0x3fb,3,-1}, 2936 {0x430,0x44f,1,-32}, 2937 {0x450,0x45f,1,-80}, 2938 {0x461,0x481,2,-1}, 2939 {0x48b,0x4bf,2,-1}, 2940 {0x4c2,0x4ce,2,-1}, 2941 {0x4cf,0x4cf,-1,-15}, 2942 {0x4d1,0x525,2,-1}, 2943 {0x561,0x586,1,-48}, 2944 {0x1d79,0x1d79,-1,35332}, 2945 {0x1d7d,0x1d7d,-1,3814}, 2946 {0x1e01,0x1e95,2,-1}, 2947 {0x1e9b,0x1e9b,-1,-59}, 2948 {0x1ea1,0x1eff,2,-1}, 2949 {0x1f00,0x1f07,1,8}, 2950 {0x1f10,0x1f15,1,8}, 2951 {0x1f20,0x1f27,1,8}, 2952 {0x1f30,0x1f37,1,8}, 2953 {0x1f40,0x1f45,1,8}, 2954 {0x1f51,0x1f57,2,8}, 2955 {0x1f60,0x1f67,1,8}, 2956 {0x1f70,0x1f71,1,74}, 2957 {0x1f72,0x1f75,1,86}, 2958 {0x1f76,0x1f77,1,100}, 2959 {0x1f78,0x1f79,1,128}, 2960 {0x1f7a,0x1f7b,1,112}, 2961 {0x1f7c,0x1f7d,1,126}, 2962 {0x1f80,0x1f87,1,8}, 2963 {0x1f90,0x1f97,1,8}, 2964 {0x1fa0,0x1fa7,1,8}, 2965 {0x1fb0,0x1fb1,1,8}, 2966 {0x1fb3,0x1fb3,-1,9}, 2967 {0x1fbe,0x1fbe,-1,-7205}, 2968 {0x1fc3,0x1fc3,-1,9}, 2969 {0x1fd0,0x1fd1,1,8}, 2970 {0x1fe0,0x1fe1,1,8}, 2971 {0x1fe5,0x1fe5,-1,7}, 2972 {0x1ff3,0x1ff3,-1,9}, 2973 {0x214e,0x214e,-1,-28}, 2974 {0x2170,0x217f,1,-16}, 2975 {0x2184,0x2184,-1,-1}, 2976 {0x24d0,0x24e9,1,-26}, 2977 {0x2c30,0x2c5e,1,-48}, 2978 {0x2c61,0x2c61,-1,-1}, 2979 {0x2c65,0x2c65,-1,-10795}, 2980 {0x2c66,0x2c66,-1,-10792}, 2981 {0x2c68,0x2c6c,2,-1}, 2982 {0x2c73,0x2c76,3,-1}, 2983 {0x2c81,0x2ce3,2,-1}, 2984 {0x2cec,0x2cee,2,-1}, 2985 {0x2d00,0x2d25,1,-7264}, 2986 {0xa641,0xa65f,2,-1}, 2987 {0xa663,0xa66d,2,-1}, 2988 {0xa681,0xa697,2,-1}, 2989 {0xa723,0xa72f,2,-1}, 2990 {0xa733,0xa76f,2,-1}, 2991 {0xa77a,0xa77c,2,-1}, 2992 {0xa77f,0xa787,2,-1}, 2993 {0xa78c,0xa78c,-1,-1}, 2994 {0xff41,0xff5a,1,-32}, 2995 {0x10428,0x1044f,1,-40} 2996 }; 2997 2998 /* 2999 * Return the upper-case equivalent of "a", which is a UCS-4 character. Use 3000 * simple case folding. 3001 */ 3002 int 3003 utf_toupper(a) 3004 int a; 3005 { 3006 /* If 'casemap' contains "keepascii" use ASCII style toupper(). */ 3007 if (a < 128 && (cmp_flags & CMP_KEEPASCII)) 3008 return TOUPPER_ASC(a); 3009 3010 #if defined(HAVE_TOWUPPER) && defined(__STDC_ISO_10646__) 3011 /* If towupper() is available and handles Unicode, use it. */ 3012 if (!(cmp_flags & CMP_INTERNAL)) 3013 return towupper(a); 3014 #endif 3015 3016 /* For characters below 128 use locale sensitive toupper(). */ 3017 if (a < 128) 3018 return TOUPPER_LOC(a); 3019 3020 /* For any other characters use the above mapping table. */ 3021 return utf_convert(a, toUpper, sizeof(toUpper)); 3022 } 3023 3024 int 3025 utf_islower(a) 3026 int a; 3027 { 3028 return (utf_toupper(a) != a); 3029 } 3030 3031 /* 3032 * Return the lower-case equivalent of "a", which is a UCS-4 character. Use 3033 * simple case folding. 3034 */ 3035 int 3036 utf_tolower(a) 3037 int a; 3038 { 3039 /* If 'casemap' contains "keepascii" use ASCII style tolower(). */ 3040 if (a < 128 && (cmp_flags & CMP_KEEPASCII)) 3041 return TOLOWER_ASC(a); 3042 3043 #if defined(HAVE_TOWLOWER) && defined(__STDC_ISO_10646__) 3044 /* If towlower() is available and handles Unicode, use it. */ 3045 if (!(cmp_flags & CMP_INTERNAL)) 3046 return towlower(a); 3047 #endif 3048 3049 /* For characters below 128 use locale sensitive tolower(). */ 3050 if (a < 128) 3051 return TOLOWER_LOC(a); 3052 3053 /* For any other characters use the above mapping table. */ 3054 return utf_convert(a, toLower, sizeof(toLower)); 3055 } 3056 3057 int 3058 utf_isupper(a) 3059 int a; 3060 { 3061 return (utf_tolower(a) != a); 3062 } 3063 3064 /* 3065 * Version of strnicmp() that handles multi-byte characters. 3066 * Needed for Big5, Sjift-JIS and UTF-8 encoding. Other DBCS encodings can 3067 * probably use strnicmp(), because there are no ASCII characters in the 3068 * second byte. 3069 * Returns zero if s1 and s2 are equal (ignoring case), the difference between 3070 * two characters otherwise. 3071 */ 3072 int 3073 mb_strnicmp(s1, s2, nn) 3074 char_u *s1, *s2; 3075 size_t nn; 3076 { 3077 int i, j, l; 3078 int cdiff; 3079 int incomplete = FALSE; 3080 int n = (int)nn; 3081 3082 for (i = 0; i < n; i += l) 3083 { 3084 if (s1[i] == NUL && s2[i] == NUL) /* both strings end */ 3085 return 0; 3086 if (enc_utf8) 3087 { 3088 l = utf_byte2len(s1[i]); 3089 if (l > n - i) 3090 { 3091 l = n - i; /* incomplete character */ 3092 incomplete = TRUE; 3093 } 3094 /* Check directly first, it's faster. */ 3095 for (j = 0; j < l; ++j) 3096 { 3097 if (s1[i + j] != s2[i + j]) 3098 break; 3099 if (s1[i + j] == 0) 3100 /* Both stings have the same bytes but are incomplete or 3101 * have illegal bytes, accept them as equal. */ 3102 l = j; 3103 } 3104 if (j < l) 3105 { 3106 /* If one of the two characters is incomplete return -1. */ 3107 if (incomplete || i + utf_byte2len(s2[i]) > n) 3108 return -1; 3109 cdiff = utf_fold(utf_ptr2char(s1 + i)) 3110 - utf_fold(utf_ptr2char(s2 + i)); 3111 if (cdiff != 0) 3112 return cdiff; 3113 } 3114 } 3115 else 3116 { 3117 l = (*mb_ptr2len)(s1 + i); 3118 if (l <= 1) 3119 { 3120 /* Single byte: first check normally, then with ignore case. */ 3121 if (s1[i] != s2[i]) 3122 { 3123 cdiff = MB_TOLOWER(s1[i]) - MB_TOLOWER(s2[i]); 3124 if (cdiff != 0) 3125 return cdiff; 3126 } 3127 } 3128 else 3129 { 3130 /* For non-Unicode multi-byte don't ignore case. */ 3131 if (l > n - i) 3132 l = n - i; 3133 cdiff = STRNCMP(s1 + i, s2 + i, l); 3134 if (cdiff != 0) 3135 return cdiff; 3136 } 3137 } 3138 } 3139 return 0; 3140 } 3141 3142 /* 3143 * "g8": show bytes of the UTF-8 char under the cursor. Doesn't matter what 3144 * 'encoding' has been set to. 3145 */ 3146 void 3147 show_utf8() 3148 { 3149 int len; 3150 int rlen = 0; 3151 char_u *line; 3152 int clen; 3153 int i; 3154 3155 /* Get the byte length of the char under the cursor, including composing 3156 * characters. */ 3157 line = ml_get_cursor(); 3158 len = utfc_ptr2len(line); 3159 if (len == 0) 3160 { 3161 MSG("NUL"); 3162 return; 3163 } 3164 3165 clen = 0; 3166 for (i = 0; i < len; ++i) 3167 { 3168 if (clen == 0) 3169 { 3170 /* start of (composing) character, get its length */ 3171 if (i > 0) 3172 { 3173 STRCPY(IObuff + rlen, "+ "); 3174 rlen += 2; 3175 } 3176 clen = utf_ptr2len(line + i); 3177 } 3178 sprintf((char *)IObuff + rlen, "%02x ", line[i]); 3179 --clen; 3180 rlen += (int)STRLEN(IObuff + rlen); 3181 if (rlen > IOSIZE - 20) 3182 break; 3183 } 3184 3185 msg(IObuff); 3186 } 3187 3188 /* 3189 * mb_head_off() function pointer. 3190 * Return offset from "p" to the first byte of the character it points into. 3191 * If "p" points to the NUL at the end of the string return 0. 3192 * Returns 0 when already at the first byte of a character. 3193 */ 3194 int 3195 latin_head_off(base, p) 3196 char_u *base UNUSED; 3197 char_u *p UNUSED; 3198 { 3199 return 0; 3200 } 3201 3202 int 3203 dbcs_head_off(base, p) 3204 char_u *base; 3205 char_u *p; 3206 { 3207 char_u *q; 3208 3209 /* It can't be a trailing byte when not using DBCS, at the start of the 3210 * string or the previous byte can't start a double-byte. */ 3211 if (p <= base || MB_BYTE2LEN(p[-1]) == 1 || *p == NUL) 3212 return 0; 3213 3214 /* This is slow: need to start at the base and go forward until the 3215 * byte we are looking for. Return 1 when we went past it, 0 otherwise. */ 3216 q = base; 3217 while (q < p) 3218 q += dbcs_ptr2len(q); 3219 return (q == p) ? 0 : 1; 3220 } 3221 3222 /* 3223 * Special version of dbcs_head_off() that works for ScreenLines[], where 3224 * single-width DBCS_JPNU characters are stored separately. 3225 */ 3226 int 3227 dbcs_screen_head_off(base, p) 3228 char_u *base; 3229 char_u *p; 3230 { 3231 char_u *q; 3232 3233 /* It can't be a trailing byte when not using DBCS, at the start of the 3234 * string or the previous byte can't start a double-byte. 3235 * For euc-jp an 0x8e byte in the previous cell always means we have a 3236 * lead byte in the current cell. */ 3237 if (p <= base 3238 || (enc_dbcs == DBCS_JPNU && p[-1] == 0x8e) 3239 || MB_BYTE2LEN(p[-1]) == 1 3240 || *p == NUL) 3241 return 0; 3242 3243 /* This is slow: need to start at the base and go forward until the 3244 * byte we are looking for. Return 1 when we went past it, 0 otherwise. 3245 * For DBCS_JPNU look out for 0x8e, which means the second byte is not 3246 * stored as the next byte. */ 3247 q = base; 3248 while (q < p) 3249 { 3250 if (enc_dbcs == DBCS_JPNU && *q == 0x8e) 3251 ++q; 3252 else 3253 q += dbcs_ptr2len(q); 3254 } 3255 return (q == p) ? 0 : 1; 3256 } 3257 3258 int 3259 utf_head_off(base, p) 3260 char_u *base; 3261 char_u *p; 3262 { 3263 char_u *q; 3264 char_u *s; 3265 int c; 3266 int len; 3267 #ifdef FEAT_ARABIC 3268 char_u *j; 3269 #endif 3270 3271 if (*p < 0x80) /* be quick for ASCII */ 3272 return 0; 3273 3274 /* Skip backwards over trailing bytes: 10xx.xxxx 3275 * Skip backwards again if on a composing char. */ 3276 for (q = p; ; --q) 3277 { 3278 /* Move s to the last byte of this char. */ 3279 for (s = q; (s[1] & 0xc0) == 0x80; ++s) 3280 ; 3281 /* Move q to the first byte of this char. */ 3282 while (q > base && (*q & 0xc0) == 0x80) 3283 --q; 3284 /* Check for illegal sequence. Do allow an illegal byte after where we 3285 * started. */ 3286 len = utf8len_tab[*q]; 3287 if (len != (int)(s - q + 1) && len != (int)(p - q + 1)) 3288 return 0; 3289 3290 if (q <= base) 3291 break; 3292 3293 c = utf_ptr2char(q); 3294 if (utf_iscomposing(c)) 3295 continue; 3296 3297 #ifdef FEAT_ARABIC 3298 if (arabic_maycombine(c)) 3299 { 3300 /* Advance to get a sneak-peak at the next char */ 3301 j = q; 3302 --j; 3303 /* Move j to the first byte of this char. */ 3304 while (j > base && (*j & 0xc0) == 0x80) 3305 --j; 3306 if (arabic_combine(utf_ptr2char(j), c)) 3307 continue; 3308 } 3309 #endif 3310 break; 3311 } 3312 3313 return (int)(p - q); 3314 } 3315 3316 /* 3317 * Copy a character from "*fp" to "*tp" and advance the pointers. 3318 */ 3319 void 3320 mb_copy_char(fp, tp) 3321 char_u **fp; 3322 char_u **tp; 3323 { 3324 int l = (*mb_ptr2len)(*fp); 3325 3326 mch_memmove(*tp, *fp, (size_t)l); 3327 *tp += l; 3328 *fp += l; 3329 } 3330 3331 /* 3332 * Return the offset from "p" to the first byte of a character. When "p" is 3333 * at the start of a character 0 is returned, otherwise the offset to the next 3334 * character. Can start anywhere in a stream of bytes. 3335 */ 3336 int 3337 mb_off_next(base, p) 3338 char_u *base; 3339 char_u *p; 3340 { 3341 int i; 3342 int j; 3343 3344 if (enc_utf8) 3345 { 3346 if (*p < 0x80) /* be quick for ASCII */ 3347 return 0; 3348 3349 /* Find the next character that isn't 10xx.xxxx */ 3350 for (i = 0; (p[i] & 0xc0) == 0x80; ++i) 3351 ; 3352 if (i > 0) 3353 { 3354 /* Check for illegal sequence. */ 3355 for (j = 0; p - j > base; ++j) 3356 if ((p[-j] & 0xc0) != 0x80) 3357 break; 3358 if (utf8len_tab[p[-j]] != i + j) 3359 return 0; 3360 } 3361 return i; 3362 } 3363 3364 /* Only need to check if we're on a trail byte, it doesn't matter if we 3365 * want the offset to the next or current character. */ 3366 return (*mb_head_off)(base, p); 3367 } 3368 3369 /* 3370 * Return the offset from "p" to the last byte of the character it points 3371 * into. Can start anywhere in a stream of bytes. 3372 */ 3373 int 3374 mb_tail_off(base, p) 3375 char_u *base; 3376 char_u *p; 3377 { 3378 int i; 3379 int j; 3380 3381 if (*p == NUL) 3382 return 0; 3383 3384 if (enc_utf8) 3385 { 3386 /* Find the last character that is 10xx.xxxx */ 3387 for (i = 0; (p[i + 1] & 0xc0) == 0x80; ++i) 3388 ; 3389 /* Check for illegal sequence. */ 3390 for (j = 0; p - j > base; ++j) 3391 if ((p[-j] & 0xc0) != 0x80) 3392 break; 3393 if (utf8len_tab[p[-j]] != i + j + 1) 3394 return 0; 3395 return i; 3396 } 3397 3398 /* It can't be the first byte if a double-byte when not using DBCS, at the 3399 * end of the string or the byte can't start a double-byte. */ 3400 if (enc_dbcs == 0 || p[1] == NUL || MB_BYTE2LEN(*p) == 1) 3401 return 0; 3402 3403 /* Return 1 when on the lead byte, 0 when on the tail byte. */ 3404 return 1 - dbcs_head_off(base, p); 3405 } 3406 3407 /* 3408 * Find the next illegal byte sequence. 3409 */ 3410 void 3411 utf_find_illegal() 3412 { 3413 pos_T pos = curwin->w_cursor; 3414 char_u *p; 3415 int len; 3416 vimconv_T vimconv; 3417 char_u *tofree = NULL; 3418 3419 vimconv.vc_type = CONV_NONE; 3420 if (enc_utf8 && (enc_canon_props(curbuf->b_p_fenc) & ENC_8BIT)) 3421 { 3422 /* 'encoding' is "utf-8" but we are editing a 8-bit encoded file, 3423 * possibly a utf-8 file with illegal bytes. Setup for conversion 3424 * from utf-8 to 'fileencoding'. */ 3425 convert_setup(&vimconv, p_enc, curbuf->b_p_fenc); 3426 } 3427 3428 #ifdef FEAT_VIRTUALEDIT 3429 curwin->w_cursor.coladd = 0; 3430 #endif 3431 for (;;) 3432 { 3433 p = ml_get_cursor(); 3434 if (vimconv.vc_type != CONV_NONE) 3435 { 3436 vim_free(tofree); 3437 tofree = string_convert(&vimconv, p, NULL); 3438 if (tofree == NULL) 3439 break; 3440 p = tofree; 3441 } 3442 3443 while (*p != NUL) 3444 { 3445 /* Illegal means that there are not enough trail bytes (checked by 3446 * utf_ptr2len()) or too many of them (overlong sequence). */ 3447 len = utf_ptr2len(p); 3448 if (*p >= 0x80 && (len == 1 3449 || utf_char2len(utf_ptr2char(p)) != len)) 3450 { 3451 if (vimconv.vc_type == CONV_NONE) 3452 curwin->w_cursor.col += (colnr_T)(p - ml_get_cursor()); 3453 else 3454 { 3455 int l; 3456 3457 len = (int)(p - tofree); 3458 for (p = ml_get_cursor(); *p != NUL && len-- > 0; p += l) 3459 { 3460 l = utf_ptr2len(p); 3461 curwin->w_cursor.col += l; 3462 } 3463 } 3464 goto theend; 3465 } 3466 p += len; 3467 } 3468 if (curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count) 3469 break; 3470 ++curwin->w_cursor.lnum; 3471 curwin->w_cursor.col = 0; 3472 } 3473 3474 /* didn't find it: don't move and beep */ 3475 curwin->w_cursor = pos; 3476 beep_flush(); 3477 3478 theend: 3479 vim_free(tofree); 3480 convert_setup(&vimconv, NULL, NULL); 3481 } 3482 3483 #if defined(HAVE_GTK2) || defined(PROTO) 3484 /* 3485 * Return TRUE if string "s" is a valid utf-8 string. 3486 * When "end" is NULL stop at the first NUL. 3487 * When "end" is positive stop there. 3488 */ 3489 int 3490 utf_valid_string(s, end) 3491 char_u *s; 3492 char_u *end; 3493 { 3494 int l; 3495 char_u *p = s; 3496 3497 while (end == NULL ? *p != NUL : p < end) 3498 { 3499 l = utf8len_tab_zero[*p]; 3500 if (l == 0) 3501 return FALSE; /* invalid lead byte */ 3502 if (end != NULL && p + l > end) 3503 return FALSE; /* incomplete byte sequence */ 3504 ++p; 3505 while (--l > 0) 3506 if ((*p++ & 0xc0) != 0x80) 3507 return FALSE; /* invalid trail byte */ 3508 } 3509 return TRUE; 3510 } 3511 #endif 3512 3513 #if defined(FEAT_GUI) || defined(PROTO) 3514 /* 3515 * Special version of mb_tail_off() for use in ScreenLines[]. 3516 */ 3517 int 3518 dbcs_screen_tail_off(base, p) 3519 char_u *base; 3520 char_u *p; 3521 { 3522 /* It can't be the first byte if a double-byte when not using DBCS, at the 3523 * end of the string or the byte can't start a double-byte. 3524 * For euc-jp an 0x8e byte always means we have a lead byte in the current 3525 * cell. */ 3526 if (*p == NUL || p[1] == NUL 3527 || (enc_dbcs == DBCS_JPNU && *p == 0x8e) 3528 || MB_BYTE2LEN(*p) == 1) 3529 return 0; 3530 3531 /* Return 1 when on the lead byte, 0 when on the tail byte. */ 3532 return 1 - dbcs_screen_head_off(base, p); 3533 } 3534 #endif 3535 3536 /* 3537 * If the cursor moves on an trail byte, set the cursor on the lead byte. 3538 * Thus it moves left if necessary. 3539 * Return TRUE when the cursor was adjusted. 3540 */ 3541 void 3542 mb_adjust_cursor() 3543 { 3544 mb_adjustpos(&curwin->w_cursor); 3545 } 3546 3547 /* 3548 * Adjust position "*lp" to point to the first byte of a multi-byte character. 3549 * If it points to a tail byte it's moved backwards to the head byte. 3550 */ 3551 void 3552 mb_adjustpos(lp) 3553 pos_T *lp; 3554 { 3555 char_u *p; 3556 3557 if (lp->col > 0 3558 #ifdef FEAT_VIRTUALEDIT 3559 || lp->coladd > 1 3560 #endif 3561 ) 3562 { 3563 p = ml_get(lp->lnum); 3564 lp->col -= (*mb_head_off)(p, p + lp->col); 3565 #ifdef FEAT_VIRTUALEDIT 3566 /* Reset "coladd" when the cursor would be on the right half of a 3567 * double-wide character. */ 3568 if (lp->coladd == 1 3569 && p[lp->col] != TAB 3570 && vim_isprintc((*mb_ptr2char)(p + lp->col)) 3571 && ptr2cells(p + lp->col) > 1) 3572 lp->coladd = 0; 3573 #endif 3574 } 3575 } 3576 3577 /* 3578 * Return a pointer to the character before "*p", if there is one. 3579 */ 3580 char_u * 3581 mb_prevptr(line, p) 3582 char_u *line; /* start of the string */ 3583 char_u *p; 3584 { 3585 if (p > line) 3586 mb_ptr_back(line, p); 3587 return p; 3588 } 3589 3590 /* 3591 * Return the character length of "str". Each multi-byte character (with 3592 * following composing characters) counts as one. 3593 */ 3594 int 3595 mb_charlen(str) 3596 char_u *str; 3597 { 3598 char_u *p = str; 3599 int count; 3600 3601 if (p == NULL) 3602 return 0; 3603 3604 for (count = 0; *p != NUL; count++) 3605 p += (*mb_ptr2len)(p); 3606 3607 return count; 3608 } 3609 3610 #if defined(FEAT_SPELL) || defined(PROTO) 3611 /* 3612 * Like mb_charlen() but for a string with specified length. 3613 */ 3614 int 3615 mb_charlen_len(str, len) 3616 char_u *str; 3617 int len; 3618 { 3619 char_u *p = str; 3620 int count; 3621 3622 for (count = 0; *p != NUL && p < str + len; count++) 3623 p += (*mb_ptr2len)(p); 3624 3625 return count; 3626 } 3627 #endif 3628 3629 /* 3630 * Try to un-escape a multi-byte character. 3631 * Used for the "to" and "from" part of a mapping. 3632 * Return the un-escaped string if it is a multi-byte character, and advance 3633 * "pp" to just after the bytes that formed it. 3634 * Return NULL if no multi-byte char was found. 3635 */ 3636 char_u * 3637 mb_unescape(pp) 3638 char_u **pp; 3639 { 3640 static char_u buf[MB_MAXBYTES + 1]; 3641 int n, m = 0; 3642 char_u *str = *pp; 3643 3644 /* Must translate K_SPECIAL KS_SPECIAL KE_FILLER to K_SPECIAL and CSI 3645 * KS_EXTRA KE_CSI to CSI. */ 3646 for (n = 0; str[n] != NUL && m <= MB_MAXBYTES; ++n) 3647 { 3648 if (str[n] == K_SPECIAL 3649 && str[n + 1] == KS_SPECIAL 3650 && str[n + 2] == KE_FILLER) 3651 { 3652 buf[m++] = K_SPECIAL; 3653 n += 2; 3654 } 3655 else if ((str[n] == K_SPECIAL 3656 # ifdef FEAT_GUI 3657 || str[n] == CSI 3658 # endif 3659 ) 3660 && str[n + 1] == KS_EXTRA 3661 && str[n + 2] == (int)KE_CSI) 3662 { 3663 buf[m++] = CSI; 3664 n += 2; 3665 } 3666 else if (str[n] == K_SPECIAL 3667 # ifdef FEAT_GUI 3668 || str[n] == CSI 3669 # endif 3670 ) 3671 break; /* a special key can't be a multibyte char */ 3672 else 3673 buf[m++] = str[n]; 3674 buf[m] = NUL; 3675 3676 /* Return a multi-byte character if it's found. An illegal sequence 3677 * will result in a 1 here. */ 3678 if ((*mb_ptr2len)(buf) > 1) 3679 { 3680 *pp = str + n + 1; 3681 return buf; 3682 } 3683 } 3684 return NULL; 3685 } 3686 3687 /* 3688 * Return TRUE if the character at "row"/"col" on the screen is the left side 3689 * of a double-width character. 3690 * Caller must make sure "row" and "col" are not invalid! 3691 */ 3692 int 3693 mb_lefthalve(row, col) 3694 int row; 3695 int col; 3696 { 3697 #ifdef FEAT_HANGULIN 3698 if (composing_hangul) 3699 return TRUE; 3700 #endif 3701 return (*mb_off2cells)(LineOffset[row] + col, 3702 LineOffset[row] + screen_Columns) > 1; 3703 } 3704 3705 /* 3706 * Correct a position on the screen, if it's the right half of a double-wide 3707 * char move it to the left half. Returns the corrected column. 3708 */ 3709 int 3710 mb_fix_col(col, row) 3711 int col; 3712 int row; 3713 { 3714 col = check_col(col); 3715 row = check_row(row); 3716 if (has_mbyte && ScreenLines != NULL && col > 0 3717 && ((enc_dbcs 3718 && ScreenLines[LineOffset[row] + col] != NUL 3719 && dbcs_screen_head_off(ScreenLines + LineOffset[row], 3720 ScreenLines + LineOffset[row] + col)) 3721 || (enc_utf8 && ScreenLines[LineOffset[row] + col] == 0))) 3722 return col - 1; 3723 return col; 3724 } 3725 #endif 3726 3727 #if defined(FEAT_MBYTE) || defined(FEAT_POSTSCRIPT) || defined(PROTO) 3728 static int enc_alias_search __ARGS((char_u *name)); 3729 3730 /* 3731 * Skip the Vim specific head of a 'encoding' name. 3732 */ 3733 char_u * 3734 enc_skip(p) 3735 char_u *p; 3736 { 3737 if (STRNCMP(p, "2byte-", 6) == 0) 3738 return p + 6; 3739 if (STRNCMP(p, "8bit-", 5) == 0) 3740 return p + 5; 3741 return p; 3742 } 3743 3744 /* 3745 * Find the canonical name for encoding "enc". 3746 * When the name isn't recognized, returns "enc" itself, but with all lower 3747 * case characters and '_' replaced with '-'. 3748 * Returns an allocated string. NULL for out-of-memory. 3749 */ 3750 char_u * 3751 enc_canonize(enc) 3752 char_u *enc; 3753 { 3754 char_u *r; 3755 char_u *p, *s; 3756 int i; 3757 3758 # ifdef FEAT_MBYTE 3759 if (STRCMP(enc, "default") == 0) 3760 { 3761 /* Use the default encoding as it's found by set_init_1(). */ 3762 r = get_encoding_default(); 3763 if (r == NULL) 3764 r = (char_u *)"latin1"; 3765 return vim_strsave(r); 3766 } 3767 # endif 3768 3769 /* copy "enc" to allocated memory, with room for two '-' */ 3770 r = alloc((unsigned)(STRLEN(enc) + 3)); 3771 if (r != NULL) 3772 { 3773 /* Make it all lower case and replace '_' with '-'. */ 3774 p = r; 3775 for (s = enc; *s != NUL; ++s) 3776 { 3777 if (*s == '_') 3778 *p++ = '-'; 3779 else 3780 *p++ = TOLOWER_ASC(*s); 3781 } 3782 *p = NUL; 3783 3784 /* Skip "2byte-" and "8bit-". */ 3785 p = enc_skip(r); 3786 3787 /* Change "microsoft-cp" to "cp". Used in some spell files. */ 3788 if (STRNCMP(p, "microsoft-cp", 12) == 0) 3789 STRMOVE(p, p + 10); 3790 3791 /* "iso8859" -> "iso-8859" */ 3792 if (STRNCMP(p, "iso8859", 7) == 0) 3793 { 3794 STRMOVE(p + 4, p + 3); 3795 p[3] = '-'; 3796 } 3797 3798 /* "iso-8859n" -> "iso-8859-n" */ 3799 if (STRNCMP(p, "iso-8859", 8) == 0 && p[8] != '-') 3800 { 3801 STRMOVE(p + 9, p + 8); 3802 p[8] = '-'; 3803 } 3804 3805 /* "latin-N" -> "latinN" */ 3806 if (STRNCMP(p, "latin-", 6) == 0) 3807 STRMOVE(p + 5, p + 6); 3808 3809 if (enc_canon_search(p) >= 0) 3810 { 3811 /* canonical name can be used unmodified */ 3812 if (p != r) 3813 STRMOVE(r, p); 3814 } 3815 else if ((i = enc_alias_search(p)) >= 0) 3816 { 3817 /* alias recognized, get canonical name */ 3818 vim_free(r); 3819 r = vim_strsave((char_u *)enc_canon_table[i].name); 3820 } 3821 } 3822 return r; 3823 } 3824 3825 /* 3826 * Search for an encoding alias of "name". 3827 * Returns -1 when not found. 3828 */ 3829 static int 3830 enc_alias_search(name) 3831 char_u *name; 3832 { 3833 int i; 3834 3835 for (i = 0; enc_alias_table[i].name != NULL; ++i) 3836 if (STRCMP(name, enc_alias_table[i].name) == 0) 3837 return enc_alias_table[i].canon; 3838 return -1; 3839 } 3840 #endif 3841 3842 #if defined(FEAT_MBYTE) || defined(PROTO) 3843 3844 #ifdef HAVE_LANGINFO_H 3845 # include <langinfo.h> 3846 #endif 3847 3848 /* 3849 * Get the canonicalized encoding of the current locale. 3850 * Returns an allocated string when successful, NULL when not. 3851 */ 3852 char_u * 3853 enc_locale() 3854 { 3855 #ifndef WIN3264 3856 char *s; 3857 char *p; 3858 int i; 3859 #endif 3860 char buf[50]; 3861 #ifdef WIN3264 3862 long acp = GetACP(); 3863 3864 if (acp == 1200) 3865 STRCPY(buf, "ucs-2le"); 3866 else if (acp == 1252) /* cp1252 is used as latin1 */ 3867 STRCPY(buf, "latin1"); 3868 else 3869 sprintf(buf, "cp%ld", acp); 3870 #else 3871 # ifdef HAVE_NL_LANGINFO_CODESET 3872 if ((s = nl_langinfo(CODESET)) == NULL || *s == NUL) 3873 # endif 3874 # if defined(HAVE_LOCALE_H) || defined(X_LOCALE) 3875 if ((s = setlocale(LC_CTYPE, NULL)) == NULL || *s == NUL) 3876 # endif 3877 if ((s = getenv("LC_ALL")) == NULL || *s == NUL) 3878 if ((s = getenv("LC_CTYPE")) == NULL || *s == NUL) 3879 s = getenv("LANG"); 3880 3881 if (s == NULL || *s == NUL) 3882 return FAIL; 3883 3884 /* The most generic locale format is: 3885 * language[_territory][.codeset][@modifier][+special][,[sponsor][_revision]] 3886 * If there is a '.' remove the part before it. 3887 * if there is something after the codeset, remove it. 3888 * Make the name lowercase and replace '_' with '-'. 3889 * Exception: "ja_JP.EUC" == "euc-jp", "zh_CN.EUC" = "euc-cn", 3890 * "ko_KR.EUC" == "euc-kr" 3891 */ 3892 if ((p = (char *)vim_strchr((char_u *)s, '.')) != NULL) 3893 { 3894 if (p > s + 2 && STRNICMP(p + 1, "EUC", 3) == 0 3895 && !isalnum((int)p[4]) && p[4] != '-' && p[-3] == '_') 3896 { 3897 /* copy "XY.EUC" to "euc-XY" to buf[10] */ 3898 STRCPY(buf + 10, "euc-"); 3899 buf[14] = p[-2]; 3900 buf[15] = p[-1]; 3901 buf[16] = 0; 3902 s = buf + 10; 3903 } 3904 else 3905 s = p + 1; 3906 } 3907 for (i = 0; s[i] != NUL && i < (int)sizeof(buf) - 1; ++i) 3908 { 3909 if (s[i] == '_' || s[i] == '-') 3910 buf[i] = '-'; 3911 else if (isalnum((int)s[i])) 3912 buf[i] = TOLOWER_ASC(s[i]); 3913 else 3914 break; 3915 } 3916 buf[i] = NUL; 3917 #endif 3918 3919 return enc_canonize((char_u *)buf); 3920 } 3921 3922 #if defined(WIN3264) || defined(PROTO) 3923 /* 3924 * Convert an encoding name to an MS-Windows codepage. 3925 * Returns zero if no codepage can be figured out. 3926 */ 3927 int 3928 encname2codepage(name) 3929 char_u *name; 3930 { 3931 int cp; 3932 char_u *p = name; 3933 int idx; 3934 3935 if (STRNCMP(p, "8bit-", 5) == 0) 3936 p += 5; 3937 else if (STRNCMP(p_enc, "2byte-", 6) == 0) 3938 p += 6; 3939 3940 if (p[0] == 'c' && p[1] == 'p') 3941 cp = atoi(p + 2); 3942 else if ((idx = enc_canon_search(p)) >= 0) 3943 cp = enc_canon_table[idx].codepage; 3944 else 3945 return 0; 3946 if (IsValidCodePage(cp)) 3947 return cp; 3948 return 0; 3949 } 3950 #endif 3951 3952 # if defined(USE_ICONV) || defined(PROTO) 3953 3954 static char_u *iconv_string __ARGS((vimconv_T *vcp, char_u *str, int slen, int *unconvlenp, int *resultlenp)); 3955 3956 /* 3957 * Call iconv_open() with a check if iconv() works properly (there are broken 3958 * versions). 3959 * Returns (void *)-1 if failed. 3960 * (should return iconv_t, but that causes problems with prototypes). 3961 */ 3962 void * 3963 my_iconv_open(to, from) 3964 char_u *to; 3965 char_u *from; 3966 { 3967 iconv_t fd; 3968 #define ICONV_TESTLEN 400 3969 char_u tobuf[ICONV_TESTLEN]; 3970 char *p; 3971 size_t tolen; 3972 static int iconv_ok = -1; 3973 3974 if (iconv_ok == FALSE) 3975 return (void *)-1; /* detected a broken iconv() previously */ 3976 3977 #ifdef DYNAMIC_ICONV 3978 /* Check if the iconv.dll can be found. */ 3979 if (!iconv_enabled(TRUE)) 3980 return (void *)-1; 3981 #endif 3982 3983 fd = iconv_open((char *)enc_skip(to), (char *)enc_skip(from)); 3984 3985 if (fd != (iconv_t)-1 && iconv_ok == -1) 3986 { 3987 /* 3988 * Do a dummy iconv() call to check if it actually works. There is a 3989 * version of iconv() on Linux that is broken. We can't ignore it, 3990 * because it's wide-spread. The symptoms are that after outputting 3991 * the initial shift state the "to" pointer is NULL and conversion 3992 * stops for no apparent reason after about 8160 characters. 3993 */ 3994 p = (char *)tobuf; 3995 tolen = ICONV_TESTLEN; 3996 (void)iconv(fd, NULL, NULL, &p, &tolen); 3997 if (p == NULL) 3998 { 3999 iconv_ok = FALSE; 4000 iconv_close(fd); 4001 fd = (iconv_t)-1; 4002 } 4003 else 4004 iconv_ok = TRUE; 4005 } 4006 4007 return (void *)fd; 4008 } 4009 4010 /* 4011 * Convert the string "str[slen]" with iconv(). 4012 * If "unconvlenp" is not NULL handle the string ending in an incomplete 4013 * sequence and set "*unconvlenp" to the length of it. 4014 * Returns the converted string in allocated memory. NULL for an error. 4015 * If resultlenp is not NULL, sets it to the result length in bytes. 4016 */ 4017 static char_u * 4018 iconv_string(vcp, str, slen, unconvlenp, resultlenp) 4019 vimconv_T *vcp; 4020 char_u *str; 4021 int slen; 4022 int *unconvlenp; 4023 int *resultlenp; 4024 { 4025 const char *from; 4026 size_t fromlen; 4027 char *to; 4028 size_t tolen; 4029 size_t len = 0; 4030 size_t done = 0; 4031 char_u *result = NULL; 4032 char_u *p; 4033 int l; 4034 4035 from = (char *)str; 4036 fromlen = slen; 4037 for (;;) 4038 { 4039 if (len == 0 || ICONV_ERRNO == ICONV_E2BIG) 4040 { 4041 /* Allocate enough room for most conversions. When re-allocating 4042 * increase the buffer size. */ 4043 len = len + fromlen * 2 + 40; 4044 p = alloc((unsigned)len); 4045 if (p != NULL && done > 0) 4046 mch_memmove(p, result, done); 4047 vim_free(result); 4048 result = p; 4049 if (result == NULL) /* out of memory */ 4050 break; 4051 } 4052 4053 to = (char *)result + done; 4054 tolen = len - done - 2; 4055 /* Avoid a warning for systems with a wrong iconv() prototype by 4056 * casting the second argument to void *. */ 4057 if (iconv(vcp->vc_fd, (void *)&from, &fromlen, &to, &tolen) 4058 != (size_t)-1) 4059 { 4060 /* Finished, append a NUL. */ 4061 *to = NUL; 4062 break; 4063 } 4064 4065 /* Check both ICONV_EINVAL and EINVAL, because the dynamically loaded 4066 * iconv library may use one of them. */ 4067 if (!vcp->vc_fail && unconvlenp != NULL 4068 && (ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) 4069 { 4070 /* Handle an incomplete sequence at the end. */ 4071 *to = NUL; 4072 *unconvlenp = (int)fromlen; 4073 break; 4074 } 4075 4076 /* Check both ICONV_EILSEQ and EILSEQ, because the dynamically loaded 4077 * iconv library may use one of them. */ 4078 else if (!vcp->vc_fail 4079 && (ICONV_ERRNO == ICONV_EILSEQ || ICONV_ERRNO == EILSEQ 4080 || ICONV_ERRNO == ICONV_EINVAL || ICONV_ERRNO == EINVAL)) 4081 { 4082 /* Can't convert: insert a '?' and skip a character. This assumes 4083 * conversion from 'encoding' to something else. In other 4084 * situations we don't know what to skip anyway. */ 4085 *to++ = '?'; 4086 if ((*mb_ptr2cells)((char_u *)from) > 1) 4087 *to++ = '?'; 4088 if (enc_utf8) 4089 l = utfc_ptr2len_len((char_u *)from, (int)fromlen); 4090 else 4091 { 4092 l = (*mb_ptr2len)((char_u *)from); 4093 if (l > (int)fromlen) 4094 l = (int)fromlen; 4095 } 4096 from += l; 4097 fromlen -= l; 4098 } 4099 else if (ICONV_ERRNO != ICONV_E2BIG) 4100 { 4101 /* conversion failed */ 4102 vim_free(result); 4103 result = NULL; 4104 break; 4105 } 4106 /* Not enough room or skipping illegal sequence. */ 4107 done = to - (char *)result; 4108 } 4109 4110 if (resultlenp != NULL) 4111 *resultlenp = (int)(to - (char *)result); 4112 return result; 4113 } 4114 4115 # if defined(DYNAMIC_ICONV) || defined(PROTO) 4116 /* 4117 * Dynamically load the "iconv.dll" on Win32. 4118 */ 4119 4120 #ifndef DYNAMIC_ICONV /* just generating prototypes */ 4121 # define HINSTANCE int 4122 #endif 4123 static HINSTANCE hIconvDLL = 0; 4124 static HINSTANCE hMsvcrtDLL = 0; 4125 4126 # ifndef DYNAMIC_ICONV_DLL 4127 # define DYNAMIC_ICONV_DLL "iconv.dll" 4128 # define DYNAMIC_ICONV_DLL_ALT "libiconv.dll" 4129 # endif 4130 # ifndef DYNAMIC_MSVCRT_DLL 4131 # define DYNAMIC_MSVCRT_DLL "msvcrt.dll" 4132 # endif 4133 4134 /* 4135 * Try opening the iconv.dll and return TRUE if iconv() can be used. 4136 */ 4137 int 4138 iconv_enabled(verbose) 4139 int verbose; 4140 { 4141 if (hIconvDLL != 0 && hMsvcrtDLL != 0) 4142 return TRUE; 4143 hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL); 4144 if (hIconvDLL == 0) /* sometimes it's called libiconv.dll */ 4145 hIconvDLL = LoadLibrary(DYNAMIC_ICONV_DLL_ALT); 4146 if (hIconvDLL != 0) 4147 hMsvcrtDLL = LoadLibrary(DYNAMIC_MSVCRT_DLL); 4148 if (hIconvDLL == 0 || hMsvcrtDLL == 0) 4149 { 4150 /* Only give the message when 'verbose' is set, otherwise it might be 4151 * done whenever a conversion is attempted. */ 4152 if (verbose && p_verbose > 0) 4153 { 4154 verbose_enter(); 4155 EMSG2(_(e_loadlib), 4156 hIconvDLL == 0 ? DYNAMIC_ICONV_DLL : DYNAMIC_MSVCRT_DLL); 4157 verbose_leave(); 4158 } 4159 iconv_end(); 4160 return FALSE; 4161 } 4162 4163 iconv = (void *)GetProcAddress(hIconvDLL, "libiconv"); 4164 iconv_open = (void *)GetProcAddress(hIconvDLL, "libiconv_open"); 4165 iconv_close = (void *)GetProcAddress(hIconvDLL, "libiconv_close"); 4166 iconvctl = (void *)GetProcAddress(hIconvDLL, "libiconvctl"); 4167 iconv_errno = (void *)GetProcAddress(hMsvcrtDLL, "_errno"); 4168 if (iconv == NULL || iconv_open == NULL || iconv_close == NULL 4169 || iconvctl == NULL || iconv_errno == NULL) 4170 { 4171 iconv_end(); 4172 if (verbose && p_verbose > 0) 4173 { 4174 verbose_enter(); 4175 EMSG2(_(e_loadfunc), "for libiconv"); 4176 verbose_leave(); 4177 } 4178 return FALSE; 4179 } 4180 return TRUE; 4181 } 4182 4183 void 4184 iconv_end() 4185 { 4186 /* Don't use iconv() when inputting or outputting characters. */ 4187 if (input_conv.vc_type == CONV_ICONV) 4188 convert_setup(&input_conv, NULL, NULL); 4189 if (output_conv.vc_type == CONV_ICONV) 4190 convert_setup(&output_conv, NULL, NULL); 4191 4192 if (hIconvDLL != 0) 4193 FreeLibrary(hIconvDLL); 4194 if (hMsvcrtDLL != 0) 4195 FreeLibrary(hMsvcrtDLL); 4196 hIconvDLL = 0; 4197 hMsvcrtDLL = 0; 4198 } 4199 # endif /* DYNAMIC_ICONV */ 4200 # endif /* USE_ICONV */ 4201 4202 #endif /* FEAT_MBYTE */ 4203 4204 #if defined(FEAT_XIM) || defined(PROTO) 4205 4206 # ifdef FEAT_GUI_GTK 4207 static int xim_has_preediting INIT(= FALSE); /* IM current status */ 4208 4209 /* 4210 * Set preedit_start_col to the current cursor position. 4211 */ 4212 static void 4213 init_preedit_start_col(void) 4214 { 4215 if (State & CMDLINE) 4216 preedit_start_col = cmdline_getvcol_cursor(); 4217 else if (curwin != NULL) 4218 getvcol(curwin, &curwin->w_cursor, &preedit_start_col, NULL, NULL); 4219 /* Prevent that preediting marks the buffer as changed. */ 4220 xim_changed_while_preediting = curbuf->b_changed; 4221 } 4222 # endif 4223 4224 # if defined(HAVE_GTK2) && !defined(PROTO) 4225 4226 static int im_is_active = FALSE; /* IM is enabled for current mode */ 4227 static int preedit_is_active = FALSE; 4228 static int im_preedit_cursor = 0; /* cursor offset in characters */ 4229 static int im_preedit_trailing = 0; /* number of characters after cursor */ 4230 4231 static unsigned long im_commit_handler_id = 0; 4232 static unsigned int im_activatekey_keyval = GDK_VoidSymbol; 4233 static unsigned int im_activatekey_state = 0; 4234 4235 void 4236 im_set_active(int active) 4237 { 4238 int was_active; 4239 4240 was_active = !!im_is_active; 4241 im_is_active = (active && !p_imdisable); 4242 4243 if (im_is_active != was_active) 4244 xim_reset(); 4245 } 4246 4247 void 4248 xim_set_focus(int focus) 4249 { 4250 if (xic != NULL) 4251 { 4252 if (focus) 4253 gtk_im_context_focus_in(xic); 4254 else 4255 gtk_im_context_focus_out(xic); 4256 } 4257 } 4258 4259 void 4260 im_set_position(int row, int col) 4261 { 4262 if (xic != NULL) 4263 { 4264 GdkRectangle area; 4265 4266 area.x = FILL_X(col); 4267 area.y = FILL_Y(row); 4268 area.width = gui.char_width * (mb_lefthalve(row, col) ? 2 : 1); 4269 area.height = gui.char_height; 4270 4271 gtk_im_context_set_cursor_location(xic, &area); 4272 } 4273 } 4274 4275 # if 0 || defined(PROTO) /* apparently only used in gui_x11.c */ 4276 void 4277 xim_set_preedit(void) 4278 { 4279 im_set_position(gui.row, gui.col); 4280 } 4281 # endif 4282 4283 static void 4284 im_add_to_input(char_u *str, int len) 4285 { 4286 /* Convert from 'termencoding' (always "utf-8") to 'encoding' */ 4287 if (input_conv.vc_type != CONV_NONE) 4288 { 4289 str = string_convert(&input_conv, str, &len); 4290 g_return_if_fail(str != NULL); 4291 } 4292 4293 add_to_input_buf_csi(str, len); 4294 4295 if (input_conv.vc_type != CONV_NONE) 4296 vim_free(str); 4297 4298 if (p_mh) /* blank out the pointer if necessary */ 4299 gui_mch_mousehide(TRUE); 4300 } 4301 4302 static void 4303 im_delete_preedit(void) 4304 { 4305 char_u bskey[] = {CSI, 'k', 'b'}; 4306 char_u delkey[] = {CSI, 'k', 'D'}; 4307 4308 if (State & NORMAL) 4309 { 4310 im_preedit_cursor = 0; 4311 return; 4312 } 4313 for (; im_preedit_cursor > 0; --im_preedit_cursor) 4314 add_to_input_buf(bskey, (int)sizeof(bskey)); 4315 4316 for (; im_preedit_trailing > 0; --im_preedit_trailing) 4317 add_to_input_buf(delkey, (int)sizeof(delkey)); 4318 } 4319 4320 /* 4321 * Move the cursor left by "num_move_back" characters. 4322 * Note that ins_left() checks im_is_preediting() to avoid breaking undo for 4323 * these K_LEFT keys. 4324 */ 4325 static void 4326 im_correct_cursor(int num_move_back) 4327 { 4328 char_u backkey[] = {CSI, 'k', 'l'}; 4329 4330 if (State & NORMAL) 4331 return; 4332 # ifdef FEAT_RIGHTLEFT 4333 if ((State & CMDLINE) == 0 && curwin != NULL && curwin->w_p_rl) 4334 backkey[2] = 'r'; 4335 # endif 4336 for (; num_move_back > 0; --num_move_back) 4337 add_to_input_buf(backkey, (int)sizeof(backkey)); 4338 } 4339 4340 static int xim_expected_char = NUL; 4341 static int xim_ignored_char = FALSE; 4342 4343 /* 4344 * Update the mode and cursor while in an IM callback. 4345 */ 4346 static void 4347 im_show_info(void) 4348 { 4349 int old_vgetc_busy; 4350 4351 old_vgetc_busy = vgetc_busy; 4352 vgetc_busy = TRUE; 4353 showmode(); 4354 vgetc_busy = old_vgetc_busy; 4355 setcursor(); 4356 out_flush(); 4357 } 4358 4359 /* 4360 * Callback invoked when the user finished preediting. 4361 * Put the final string into the input buffer. 4362 */ 4363 static void 4364 im_commit_cb(GtkIMContext *context UNUSED, 4365 const gchar *str, 4366 gpointer data UNUSED) 4367 { 4368 int slen = (int)STRLEN(str); 4369 int add_to_input = TRUE; 4370 int clen; 4371 int len = slen; 4372 int commit_with_preedit = TRUE; 4373 char_u *im_str, *p; 4374 4375 #ifdef XIM_DEBUG 4376 xim_log("im_commit_cb(): %s\n", str); 4377 #endif 4378 4379 /* The imhangul module doesn't reset the preedit string before 4380 * committing. Call im_delete_preedit() to work around that. */ 4381 im_delete_preedit(); 4382 4383 /* Indicate that preediting has finished. */ 4384 if (preedit_start_col == MAXCOL) 4385 { 4386 init_preedit_start_col(); 4387 commit_with_preedit = FALSE; 4388 } 4389 4390 /* The thing which setting "preedit_start_col" to MAXCOL means that 4391 * "preedit_start_col" will be set forcely when calling 4392 * preedit_changed_cb() next time. 4393 * "preedit_start_col" should not reset with MAXCOL on this part. Vim 4394 * is simulating the preediting by using add_to_input_str(). when 4395 * preedit begin immediately before committed, the typebuf is not 4396 * flushed to screen, then it can't get correct "preedit_start_col". 4397 * Thus, it should calculate the cells by adding cells of the committed 4398 * string. */ 4399 if (input_conv.vc_type != CONV_NONE) 4400 { 4401 im_str = string_convert(&input_conv, (char_u *)str, &len); 4402 g_return_if_fail(im_str != NULL); 4403 } 4404 else 4405 im_str = (char_u *)str; 4406 clen = 0; 4407 for (p = im_str; p < im_str + len; p += (*mb_ptr2len)(p)) 4408 clen += (*mb_ptr2cells)(p); 4409 if (input_conv.vc_type != CONV_NONE) 4410 vim_free(im_str); 4411 preedit_start_col += clen; 4412 4413 /* Is this a single character that matches a keypad key that's just 4414 * been pressed? If so, we don't want it to be entered as such - let 4415 * us carry on processing the raw keycode so that it may be used in 4416 * mappings as <kSomething>. */ 4417 if (xim_expected_char != NUL) 4418 { 4419 /* We're currently processing a keypad or other special key */ 4420 if (slen == 1 && str[0] == xim_expected_char) 4421 { 4422 /* It's a match - don't do it here */ 4423 xim_ignored_char = TRUE; 4424 add_to_input = FALSE; 4425 } 4426 else 4427 { 4428 /* Not a match */ 4429 xim_ignored_char = FALSE; 4430 } 4431 } 4432 4433 if (add_to_input) 4434 im_add_to_input((char_u *)str, slen); 4435 4436 /* Inserting chars while "im_is_active" is set does not cause a change of 4437 * buffer. When the chars are committed the buffer must be marked as 4438 * changed. */ 4439 if (!commit_with_preedit) 4440 preedit_start_col = MAXCOL; 4441 4442 /* This flag is used in changed() at next call. */ 4443 xim_changed_while_preediting = TRUE; 4444 4445 if (gtk_main_level() > 0) 4446 gtk_main_quit(); 4447 } 4448 4449 /* 4450 * Callback invoked after start to the preedit. 4451 */ 4452 static void 4453 im_preedit_start_cb(GtkIMContext *context UNUSED, gpointer data UNUSED) 4454 { 4455 #ifdef XIM_DEBUG 4456 xim_log("im_preedit_start_cb()\n"); 4457 #endif 4458 4459 im_is_active = TRUE; 4460 preedit_is_active = TRUE; 4461 gui_update_cursor(TRUE, FALSE); 4462 im_show_info(); 4463 } 4464 4465 /* 4466 * Callback invoked after end to the preedit. 4467 */ 4468 static void 4469 im_preedit_end_cb(GtkIMContext *context UNUSED, gpointer data UNUSED) 4470 { 4471 #ifdef XIM_DEBUG 4472 xim_log("im_preedit_end_cb()\n"); 4473 #endif 4474 im_delete_preedit(); 4475 4476 /* Indicate that preediting has finished */ 4477 preedit_start_col = MAXCOL; 4478 xim_has_preediting = FALSE; 4479 4480 #if 0 4481 /* Removal of this line suggested by Takuhiro Nishioka. Fixes that IM was 4482 * switched off unintentionally. We now use preedit_is_active (added by 4483 * SungHyun Nam). */ 4484 im_is_active = FALSE; 4485 #endif 4486 preedit_is_active = FALSE; 4487 gui_update_cursor(TRUE, FALSE); 4488 im_show_info(); 4489 } 4490 4491 /* 4492 * Callback invoked after changes to the preedit string. If the preedit 4493 * string was empty before, remember the preedit start column so we know 4494 * where to apply feedback attributes. Delete the previous preedit string 4495 * if there was one, save the new preedit cursor offset, and put the new 4496 * string into the input buffer. 4497 * 4498 * TODO: The pragmatic "put into input buffer" approach used here has 4499 * several fundamental problems: 4500 * 4501 * - The characters in the preedit string are subject to remapping. 4502 * That's broken, only the finally committed string should be remapped. 4503 * 4504 * - There is a race condition involved: The retrieved value for the 4505 * current cursor position will be wrong if any unprocessed characters 4506 * are still queued in the input buffer. 4507 * 4508 * - Due to the lack of synchronization between the file buffer in memory 4509 * and any typed characters, it's practically impossible to implement the 4510 * "retrieve_surrounding" and "delete_surrounding" signals reliably. IM 4511 * modules for languages such as Thai are likely to rely on this feature 4512 * for proper operation. 4513 * 4514 * Conclusions: I think support for preediting needs to be moved to the 4515 * core parts of Vim. Ideally, until it has been committed, the preediting 4516 * string should only be displayed and not affect the buffer content at all. 4517 * The question how to deal with the synchronization issue still remains. 4518 * Circumventing the input buffer is probably not desirable. Anyway, I think 4519 * implementing "retrieve_surrounding" is the only hard problem. 4520 * 4521 * One way to solve all of this in a clean manner would be to queue all key 4522 * press/release events "as is" in the input buffer, and apply the IM filtering 4523 * at the receiving end of the queue. This, however, would have a rather large 4524 * impact on the code base. If there is an easy way to force processing of all 4525 * remaining input from within the "retrieve_surrounding" signal handler, this 4526 * might not be necessary. Gotta ask on vim-dev for opinions. 4527 */ 4528 static void 4529 im_preedit_changed_cb(GtkIMContext *context, gpointer data UNUSED) 4530 { 4531 char *preedit_string = NULL; 4532 int cursor_index = 0; 4533 int num_move_back = 0; 4534 char_u *str; 4535 char_u *p; 4536 int i; 4537 4538 gtk_im_context_get_preedit_string(context, 4539 &preedit_string, NULL, 4540 &cursor_index); 4541 4542 #ifdef XIM_DEBUG 4543 xim_log("im_preedit_changed_cb(): %s\n", preedit_string); 4544 #endif 4545 4546 g_return_if_fail(preedit_string != NULL); /* just in case */ 4547 4548 /* If preedit_start_col is MAXCOL set it to the current cursor position. */ 4549 if (preedit_start_col == MAXCOL && preedit_string[0] != '\0') 4550 { 4551 xim_has_preediting = TRUE; 4552 4553 /* Urgh, this breaks if the input buffer isn't empty now */ 4554 init_preedit_start_col(); 4555 } 4556 else if (cursor_index == 0 && preedit_string[0] == '\0') 4557 { 4558 xim_has_preediting = FALSE; 4559 4560 /* If at the start position (after typing backspace) 4561 * preedit_start_col must be reset. */ 4562 preedit_start_col = MAXCOL; 4563 } 4564 4565 im_delete_preedit(); 4566 4567 /* 4568 * Compute the end of the preediting area: "preedit_end_col". 4569 * According to the documentation of gtk_im_context_get_preedit_string(), 4570 * the cursor_pos output argument returns the offset in bytes. This is 4571 * unfortunately not true -- real life shows the offset is in characters, 4572 * and the GTK+ source code agrees with me. Will file a bug later. 4573 */ 4574 if (preedit_start_col != MAXCOL) 4575 preedit_end_col = preedit_start_col; 4576 str = (char_u *)preedit_string; 4577 for (p = str, i = 0; *p != NUL; p += utf_byte2len(*p), ++i) 4578 { 4579 int is_composing; 4580 4581 is_composing = ((*p & 0x80) != 0 && utf_iscomposing(utf_ptr2char(p))); 4582 /* 4583 * These offsets are used as counters when generating <BS> and <Del> 4584 * to delete the preedit string. So don't count composing characters 4585 * unless 'delcombine' is enabled. 4586 */ 4587 if (!is_composing || p_deco) 4588 { 4589 if (i < cursor_index) 4590 ++im_preedit_cursor; 4591 else 4592 ++im_preedit_trailing; 4593 } 4594 if (!is_composing && i >= cursor_index) 4595 { 4596 /* This is essentially the same as im_preedit_trailing, except 4597 * composing characters are not counted even if p_deco is set. */ 4598 ++num_move_back; 4599 } 4600 if (preedit_start_col != MAXCOL) 4601 preedit_end_col += utf_ptr2cells(p); 4602 } 4603 4604 if (p > str) 4605 { 4606 im_add_to_input(str, (int)(p - str)); 4607 im_correct_cursor(num_move_back); 4608 } 4609 4610 g_free(preedit_string); 4611 4612 if (gtk_main_level() > 0) 4613 gtk_main_quit(); 4614 } 4615 4616 /* 4617 * Translate the Pango attributes at iter to Vim highlighting attributes. 4618 * Ignore attributes not supported by Vim highlighting. This shouldn't have 4619 * too much impact -- right now we handle even more attributes than necessary 4620 * for the IM modules I tested with. 4621 */ 4622 static int 4623 translate_pango_attributes(PangoAttrIterator *iter) 4624 { 4625 PangoAttribute *attr; 4626 int char_attr = HL_NORMAL; 4627 4628 attr = pango_attr_iterator_get(iter, PANGO_ATTR_UNDERLINE); 4629 if (attr != NULL && ((PangoAttrInt *)attr)->value 4630 != (int)PANGO_UNDERLINE_NONE) 4631 char_attr |= HL_UNDERLINE; 4632 4633 attr = pango_attr_iterator_get(iter, PANGO_ATTR_WEIGHT); 4634 if (attr != NULL && ((PangoAttrInt *)attr)->value >= (int)PANGO_WEIGHT_BOLD) 4635 char_attr |= HL_BOLD; 4636 4637 attr = pango_attr_iterator_get(iter, PANGO_ATTR_STYLE); 4638 if (attr != NULL && ((PangoAttrInt *)attr)->value 4639 != (int)PANGO_STYLE_NORMAL) 4640 char_attr |= HL_ITALIC; 4641 4642 attr = pango_attr_iterator_get(iter, PANGO_ATTR_BACKGROUND); 4643 if (attr != NULL) 4644 { 4645 const PangoColor *color = &((PangoAttrColor *)attr)->color; 4646 4647 /* Assume inverse if black background is requested */ 4648 if ((color->red | color->green | color->blue) == 0) 4649 char_attr |= HL_INVERSE; 4650 } 4651 4652 return char_attr; 4653 } 4654 4655 /* 4656 * Retrieve the highlighting attributes at column col in the preedit string. 4657 * Return -1 if not in preediting mode or if col is out of range. 4658 */ 4659 int 4660 im_get_feedback_attr(int col) 4661 { 4662 char *preedit_string = NULL; 4663 PangoAttrList *attr_list = NULL; 4664 int char_attr = -1; 4665 4666 if (xic == NULL) 4667 return char_attr; 4668 4669 gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL); 4670 4671 if (preedit_string != NULL && attr_list != NULL) 4672 { 4673 int idx; 4674 4675 /* Get the byte index as used by PangoAttrIterator */ 4676 for (idx = 0; col > 0 && preedit_string[idx] != '\0'; --col) 4677 idx += utfc_ptr2len((char_u *)preedit_string + idx); 4678 4679 if (preedit_string[idx] != '\0') 4680 { 4681 PangoAttrIterator *iter; 4682 int start, end; 4683 4684 char_attr = HL_NORMAL; 4685 iter = pango_attr_list_get_iterator(attr_list); 4686 4687 /* Extract all relevant attributes from the list. */ 4688 do 4689 { 4690 pango_attr_iterator_range(iter, &start, &end); 4691 4692 if (idx >= start && idx < end) 4693 char_attr |= translate_pango_attributes(iter); 4694 } 4695 while (pango_attr_iterator_next(iter)); 4696 4697 pango_attr_iterator_destroy(iter); 4698 } 4699 } 4700 4701 if (attr_list != NULL) 4702 pango_attr_list_unref(attr_list); 4703 g_free(preedit_string); 4704 4705 return char_attr; 4706 } 4707 4708 void 4709 xim_init(void) 4710 { 4711 #ifdef XIM_DEBUG 4712 xim_log("xim_init()\n"); 4713 #endif 4714 4715 g_return_if_fail(gui.drawarea != NULL); 4716 g_return_if_fail(gui.drawarea->window != NULL); 4717 4718 xic = gtk_im_multicontext_new(); 4719 g_object_ref(xic); 4720 4721 im_commit_handler_id = g_signal_connect(G_OBJECT(xic), "commit", 4722 G_CALLBACK(&im_commit_cb), NULL); 4723 g_signal_connect(G_OBJECT(xic), "preedit_changed", 4724 G_CALLBACK(&im_preedit_changed_cb), NULL); 4725 g_signal_connect(G_OBJECT(xic), "preedit_start", 4726 G_CALLBACK(&im_preedit_start_cb), NULL); 4727 g_signal_connect(G_OBJECT(xic), "preedit_end", 4728 G_CALLBACK(&im_preedit_end_cb), NULL); 4729 4730 gtk_im_context_set_client_window(xic, gui.drawarea->window); 4731 } 4732 4733 void 4734 im_shutdown(void) 4735 { 4736 #ifdef XIM_DEBUG 4737 xim_log("im_shutdown()\n"); 4738 #endif 4739 4740 if (xic != NULL) 4741 { 4742 gtk_im_context_focus_out(xic); 4743 g_object_unref(xic); 4744 xic = NULL; 4745 } 4746 im_is_active = FALSE; 4747 im_commit_handler_id = 0; 4748 preedit_start_col = MAXCOL; 4749 xim_has_preediting = FALSE; 4750 } 4751 4752 /* 4753 * Convert the string argument to keyval and state for GdkEventKey. 4754 * If str is valid return TRUE, otherwise FALSE. 4755 * 4756 * See 'imactivatekey' for documentation of the format. 4757 */ 4758 static int 4759 im_string_to_keyval(const char *str, unsigned int *keyval, unsigned int *state) 4760 { 4761 const char *mods_end; 4762 unsigned tmp_keyval; 4763 unsigned tmp_state = 0; 4764 4765 mods_end = strrchr(str, '-'); 4766 mods_end = (mods_end != NULL) ? mods_end + 1 : str; 4767 4768 /* Parse modifier keys */ 4769 while (str < mods_end) 4770 switch (*str++) 4771 { 4772 case '-': break; 4773 case 'S': case 's': tmp_state |= (unsigned)GDK_SHIFT_MASK; break; 4774 case 'L': case 'l': tmp_state |= (unsigned)GDK_LOCK_MASK; break; 4775 case 'C': case 'c': tmp_state |= (unsigned)GDK_CONTROL_MASK;break; 4776 case '1': tmp_state |= (unsigned)GDK_MOD1_MASK; break; 4777 case '2': tmp_state |= (unsigned)GDK_MOD2_MASK; break; 4778 case '3': tmp_state |= (unsigned)GDK_MOD3_MASK; break; 4779 case '4': tmp_state |= (unsigned)GDK_MOD4_MASK; break; 4780 case '5': tmp_state |= (unsigned)GDK_MOD5_MASK; break; 4781 default: 4782 return FALSE; 4783 } 4784 4785 tmp_keyval = gdk_keyval_from_name(str); 4786 4787 if (tmp_keyval == 0 || tmp_keyval == GDK_VoidSymbol) 4788 return FALSE; 4789 4790 if (keyval != NULL) 4791 *keyval = tmp_keyval; 4792 if (state != NULL) 4793 *state = tmp_state; 4794 4795 return TRUE; 4796 } 4797 4798 /* 4799 * Return TRUE if p_imak is valid, otherwise FALSE. As a special case, an 4800 * empty string is also regarded as valid. 4801 * 4802 * Note: The numerical key value of p_imak is cached if it was valid; thus 4803 * boldly assuming im_xim_isvalid_imactivate() will always be called whenever 4804 * 'imak' changes. This is currently the case but not obvious -- should 4805 * probably rename the function for clarity. 4806 */ 4807 int 4808 im_xim_isvalid_imactivate(void) 4809 { 4810 if (p_imak[0] == NUL) 4811 { 4812 im_activatekey_keyval = GDK_VoidSymbol; 4813 im_activatekey_state = 0; 4814 return TRUE; 4815 } 4816 4817 return im_string_to_keyval((const char *)p_imak, 4818 &im_activatekey_keyval, 4819 &im_activatekey_state); 4820 } 4821 4822 static void 4823 im_synthesize_keypress(unsigned int keyval, unsigned int state) 4824 { 4825 GdkEventKey *event; 4826 4827 # ifdef HAVE_GTK_MULTIHEAD 4828 event = (GdkEventKey *)gdk_event_new(GDK_KEY_PRESS); 4829 g_object_ref(gui.drawarea->window); /* unreffed by gdk_event_free() */ 4830 # else 4831 event = (GdkEventKey *)g_malloc0((gulong)sizeof(GdkEvent)); 4832 event->type = GDK_KEY_PRESS; 4833 # endif 4834 event->window = gui.drawarea->window; 4835 event->send_event = TRUE; 4836 event->time = GDK_CURRENT_TIME; 4837 event->state = state; 4838 event->keyval = keyval; 4839 event->hardware_keycode = /* needed for XIM */ 4840 XKeysymToKeycode(GDK_WINDOW_XDISPLAY(event->window), (KeySym)keyval); 4841 event->length = 0; 4842 event->string = NULL; 4843 4844 gtk_im_context_filter_keypress(xic, event); 4845 4846 /* For consistency, also send the corresponding release event. */ 4847 event->type = GDK_KEY_RELEASE; 4848 event->send_event = FALSE; 4849 gtk_im_context_filter_keypress(xic, event); 4850 4851 # ifdef HAVE_GTK_MULTIHEAD 4852 gdk_event_free((GdkEvent *)event); 4853 # else 4854 g_free(event); 4855 # endif 4856 } 4857 4858 void 4859 xim_reset(void) 4860 { 4861 if (xic != NULL) 4862 { 4863 /* 4864 * The third-party imhangul module (and maybe others too) ignores 4865 * gtk_im_context_reset() or at least doesn't reset the active state. 4866 * Thus sending imactivatekey would turn it off if it was on before, 4867 * which is clearly not what we want. Fortunately we can work around 4868 * that for imhangul by sending GDK_Escape, but I don't know if it 4869 * works with all IM modules that support an activation key :/ 4870 * 4871 * An alternative approach would be to destroy the IM context and 4872 * recreate it. But that means loading/unloading the IM module on 4873 * every mode switch, which causes a quite noticable delay even on 4874 * my rather fast box... 4875 * * 4876 * Moreover, there are some XIM which cannot respond to 4877 * im_synthesize_keypress(). we hope that they reset by 4878 * xim_shutdown(). 4879 */ 4880 if (im_activatekey_keyval != GDK_VoidSymbol && im_is_active) 4881 im_synthesize_keypress(GDK_Escape, 0U); 4882 4883 gtk_im_context_reset(xic); 4884 4885 /* 4886 * HACK for Ami: This sequence of function calls makes Ami handle 4887 * the IM reset graciously, without breaking loads of other stuff. 4888 * It seems to force English mode as well, which is exactly what we 4889 * want because it makes the Ami status display work reliably. 4890 */ 4891 gtk_im_context_set_use_preedit(xic, FALSE); 4892 4893 if (p_imdisable) 4894 im_shutdown(); 4895 else 4896 { 4897 gtk_im_context_set_use_preedit(xic, TRUE); 4898 xim_set_focus(gui.in_focus); 4899 4900 if (im_activatekey_keyval != GDK_VoidSymbol) 4901 { 4902 if (im_is_active) 4903 { 4904 g_signal_handler_block(xic, im_commit_handler_id); 4905 im_synthesize_keypress(im_activatekey_keyval, 4906 im_activatekey_state); 4907 g_signal_handler_unblock(xic, im_commit_handler_id); 4908 } 4909 } 4910 else 4911 { 4912 im_shutdown(); 4913 xim_init(); 4914 xim_set_focus(gui.in_focus); 4915 } 4916 } 4917 } 4918 4919 preedit_start_col = MAXCOL; 4920 xim_has_preediting = FALSE; 4921 } 4922 4923 int 4924 xim_queue_key_press_event(GdkEventKey *event, int down) 4925 { 4926 if (down) 4927 { 4928 /* 4929 * Workaround GTK2 XIM 'feature' that always converts keypad keys to 4930 * chars., even when not part of an IM sequence (ref. feature of 4931 * gdk/gdkkeyuni.c). 4932 * Flag any keypad keys that might represent a single char. 4933 * If this (on its own - i.e., not part of an IM sequence) is 4934 * committed while we're processing one of these keys, we can ignore 4935 * that commit and go ahead & process it ourselves. That way we can 4936 * still distinguish keypad keys for use in mappings. 4937 * Also add GDK_space to make <S-Space> work. 4938 */ 4939 switch (event->keyval) 4940 { 4941 case GDK_KP_Add: xim_expected_char = '+'; break; 4942 case GDK_KP_Subtract: xim_expected_char = '-'; break; 4943 case GDK_KP_Divide: xim_expected_char = '/'; break; 4944 case GDK_KP_Multiply: xim_expected_char = '*'; break; 4945 case GDK_KP_Decimal: xim_expected_char = '.'; break; 4946 case GDK_KP_Equal: xim_expected_char = '='; break; 4947 case GDK_KP_0: xim_expected_char = '0'; break; 4948 case GDK_KP_1: xim_expected_char = '1'; break; 4949 case GDK_KP_2: xim_expected_char = '2'; break; 4950 case GDK_KP_3: xim_expected_char = '3'; break; 4951 case GDK_KP_4: xim_expected_char = '4'; break; 4952 case GDK_KP_5: xim_expected_char = '5'; break; 4953 case GDK_KP_6: xim_expected_char = '6'; break; 4954 case GDK_KP_7: xim_expected_char = '7'; break; 4955 case GDK_KP_8: xim_expected_char = '8'; break; 4956 case GDK_KP_9: xim_expected_char = '9'; break; 4957 case GDK_space: xim_expected_char = ' '; break; 4958 default: xim_expected_char = NUL; 4959 } 4960 xim_ignored_char = FALSE; 4961 } 4962 4963 /* 4964 * When typing fFtT, XIM may be activated. Thus it must pass 4965 * gtk_im_context_filter_keypress() in Normal mode. 4966 * And while doing :sh too. 4967 */ 4968 if (xic != NULL && !p_imdisable 4969 && (State & (INSERT | CMDLINE | NORMAL | EXTERNCMD)) != 0) 4970 { 4971 /* 4972 * Filter 'imactivatekey' and map it to CTRL-^. This way, Vim is 4973 * always aware of the current status of IM, and can even emulate 4974 * the activation key for modules that don't support one. 4975 */ 4976 if (event->keyval == im_activatekey_keyval 4977 && (event->state & im_activatekey_state) == im_activatekey_state) 4978 { 4979 unsigned int state_mask; 4980 4981 /* Require the state of the 3 most used modifiers to match exactly. 4982 * Otherwise e.g. <S-C-space> would be unusable for other purposes 4983 * if the IM activate key is <S-space>. */ 4984 state_mask = im_activatekey_state; 4985 state_mask |= ((int)GDK_SHIFT_MASK | (int)GDK_CONTROL_MASK 4986 | (int)GDK_MOD1_MASK); 4987 4988 if ((event->state & state_mask) != im_activatekey_state) 4989 return FALSE; 4990 4991 /* Don't send it a second time on GDK_KEY_RELEASE. */ 4992 if (event->type != GDK_KEY_PRESS) 4993 return TRUE; 4994 4995 if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE)) 4996 { 4997 im_set_active(FALSE); 4998 4999 /* ":lmap" mappings exists, toggle use of mappings. */ 5000 State ^= LANGMAP; 5001 if (State & LANGMAP) 5002 { 5003 curbuf->b_p_iminsert = B_IMODE_NONE; 5004 State &= ~LANGMAP; 5005 } 5006 else 5007 { 5008 curbuf->b_p_iminsert = B_IMODE_LMAP; 5009 State |= LANGMAP; 5010 } 5011 return TRUE; 5012 } 5013 5014 return gtk_im_context_filter_keypress(xic, event); 5015 } 5016 5017 /* Don't filter events through the IM context if IM isn't active 5018 * right now. Unlike with GTK+ 1.2 we cannot rely on the IM module 5019 * not doing anything before the activation key was sent. */ 5020 if (im_activatekey_keyval == GDK_VoidSymbol || im_is_active) 5021 { 5022 int imresult = gtk_im_context_filter_keypress(xic, event); 5023 5024 /* Some XIM send following sequence: 5025 * 1. preedited string. 5026 * 2. committed string. 5027 * 3. line changed key. 5028 * 4. preedited string. 5029 * 5. remove preedited string. 5030 * if 3, Vim can't move back the above line for 5. 5031 * thus, this part should not parse the key. */ 5032 if (!imresult && preedit_start_col != MAXCOL 5033 && event->keyval == GDK_Return) 5034 { 5035 im_synthesize_keypress(GDK_Return, 0U); 5036 return FALSE; 5037 } 5038 5039 /* If XIM tried to commit a keypad key as a single char., 5040 * ignore it so we can use the keypad key 'raw', for mappings. */ 5041 if (xim_expected_char != NUL && xim_ignored_char) 5042 /* We had a keypad key, and XIM tried to thieve it */ 5043 return FALSE; 5044 5045 /* Normal processing */ 5046 return imresult; 5047 } 5048 } 5049 5050 return FALSE; 5051 } 5052 5053 int 5054 im_get_status(void) 5055 { 5056 return im_is_active; 5057 } 5058 5059 # else /* !HAVE_GTK2 */ 5060 5061 static int xim_is_active = FALSE; /* XIM should be active in the current 5062 mode */ 5063 static int xim_has_focus = FALSE; /* XIM is really being used for Vim */ 5064 #ifdef FEAT_GUI_X11 5065 static XIMStyle input_style; 5066 static int status_area_enabled = TRUE; 5067 #endif 5068 5069 #ifdef FEAT_GUI_GTK 5070 # ifdef WIN3264 5071 # include <gdk/gdkwin32.h> 5072 # else 5073 # include <gdk/gdkx.h> 5074 # endif 5075 #else 5076 # ifdef PROTO 5077 /* Define a few things to be able to generate prototypes while not configured 5078 * for GTK. */ 5079 # define GSList int 5080 # define gboolean int 5081 typedef int GdkEvent; 5082 typedef int GdkEventKey; 5083 # define GdkIC int 5084 # endif 5085 #endif 5086 5087 #if defined(FEAT_GUI_GTK) || defined(PROTO) 5088 static int preedit_buf_len = 0; 5089 static int xim_can_preediting INIT(= FALSE); /* XIM in showmode() */ 5090 static int xim_input_style; 5091 #ifndef FEAT_GUI_GTK 5092 # define gboolean int 5093 #endif 5094 static gboolean use_status_area = 0; 5095 5096 static int im_xim_str2keycode __ARGS((unsigned int *code, unsigned int *state)); 5097 static void im_xim_send_event_imactivate __ARGS((void)); 5098 5099 /* 5100 * Convert string to keycode and state for XKeyEvent. 5101 * When string is valid return OK, when invalid return FAIL. 5102 * 5103 * See 'imactivatekey' documentation for the format. 5104 */ 5105 static int 5106 im_xim_str2keycode(code, state) 5107 unsigned int *code; 5108 unsigned int *state; 5109 { 5110 int retval = OK; 5111 int len; 5112 unsigned keycode = 0, keystate = 0; 5113 Window window; 5114 Display *display; 5115 char_u *flag_end; 5116 char_u *str; 5117 5118 if (*p_imak != NUL) 5119 { 5120 len = STRLEN(p_imak); 5121 for (flag_end = p_imak + len - 1; 5122 flag_end > p_imak && *flag_end != '-'; --flag_end) 5123 ; 5124 5125 /* Parse modifier keys */ 5126 for (str = p_imak; str < flag_end; ++str) 5127 { 5128 switch (*str) 5129 { 5130 case 's': case 'S': 5131 keystate |= ShiftMask; 5132 break; 5133 case 'l': case 'L': 5134 keystate |= LockMask; 5135 break; 5136 case 'c': case 'C': 5137 keystate |= ControlMask; 5138 break; 5139 case '1': 5140 keystate |= Mod1Mask; 5141 break; 5142 case '2': 5143 keystate |= Mod2Mask; 5144 break; 5145 case '3': 5146 keystate |= Mod3Mask; 5147 break; 5148 case '4': 5149 keystate |= Mod4Mask; 5150 break; 5151 case '5': 5152 keystate |= Mod5Mask; 5153 break; 5154 case '-': 5155 break; 5156 default: 5157 retval = FAIL; 5158 } 5159 } 5160 if (*str == '-') 5161 ++str; 5162 5163 /* Get keycode from string. */ 5164 gui_get_x11_windis(&window, &display); 5165 if (display) 5166 keycode = XKeysymToKeycode(display, XStringToKeysym((char *)str)); 5167 if (keycode == 0) 5168 retval = FAIL; 5169 5170 if (code != NULL) 5171 *code = keycode; 5172 if (state != NULL) 5173 *state = keystate; 5174 } 5175 return retval; 5176 } 5177 5178 static void 5179 im_xim_send_event_imactivate() 5180 { 5181 /* Force turn on preedit state by symulate keypress event. 5182 * Keycode and state is specified by 'imactivatekey'. 5183 */ 5184 XKeyEvent ev; 5185 5186 gui_get_x11_windis(&ev.window, &ev.display); 5187 ev.root = RootWindow(ev.display, DefaultScreen(ev.display)); 5188 ev.subwindow = None; 5189 ev.time = CurrentTime; 5190 ev.x = 1; 5191 ev.y = 1; 5192 ev.x_root = 1; 5193 ev.y_root = 1; 5194 ev.same_screen = 1; 5195 ev.type = KeyPress; 5196 if (im_xim_str2keycode(&ev.keycode, &ev.state) == OK) 5197 XSendEvent(ev.display, ev.window, 1, KeyPressMask, (XEvent*)&ev); 5198 } 5199 5200 /* 5201 * Return TRUE if 'imactivatekey' has a valid value. 5202 */ 5203 int 5204 im_xim_isvalid_imactivate() 5205 { 5206 return im_xim_str2keycode(NULL, NULL) == OK; 5207 } 5208 #endif /* FEAT_GUI_GTK */ 5209 5210 /* 5211 * Switch using XIM on/off. This is used by the code that changes "State". 5212 */ 5213 void 5214 im_set_active(active) 5215 int active; 5216 { 5217 if (xic == NULL) 5218 return; 5219 5220 /* If 'imdisable' is set, XIM is never active. */ 5221 if (p_imdisable) 5222 active = FALSE; 5223 #if !defined (FEAT_GUI_GTK) 5224 else if (input_style & XIMPreeditPosition) 5225 /* There is a problem in switching XIM off when preediting is used, 5226 * and it is not clear how this can be solved. For now, keep XIM on 5227 * all the time, like it was done in Vim 5.8. */ 5228 active = TRUE; 5229 #endif 5230 5231 /* Remember the active state, it is needed when Vim gets keyboard focus. */ 5232 xim_is_active = active; 5233 5234 #ifdef FEAT_GUI_GTK 5235 /* When 'imactivatekey' has valid key-string, try to control XIM preedit 5236 * state. When 'imactivatekey' has no or invalid string, try old XIM 5237 * focus control. 5238 */ 5239 if (*p_imak != NUL) 5240 { 5241 /* BASIC STRATEGY: 5242 * Destroy old Input Context (XIC), and create new one. New XIC 5243 * would have a state of preedit that is off. When argument:active 5244 * is false, that's all. Else argument:active is true, send a key 5245 * event specified by 'imactivatekey' to activate XIM preedit state. 5246 */ 5247 5248 xim_is_active = TRUE; /* Disable old XIM focus control */ 5249 /* If we can monitor preedit state with preedit callback functions, 5250 * try least creation of new XIC. 5251 */ 5252 if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS) 5253 { 5254 if (xim_can_preediting && !active) 5255 { 5256 /* Force turn off preedit state. With some IM 5257 * implementations, we cannot turn off preedit state by 5258 * symulate keypress event. It is why using such a method 5259 * that destroy old IC (input context), and create new one. 5260 * When create new IC, its preedit state is usually off. 5261 */ 5262 xim_reset(); 5263 xim_set_focus(FALSE); 5264 gdk_ic_destroy(xic); 5265 xim_init(); 5266 xim_can_preediting = FALSE; 5267 } 5268 else if (!xim_can_preediting && active) 5269 im_xim_send_event_imactivate(); 5270 } 5271 else 5272 { 5273 /* First, force destroy old IC, and create new one. It 5274 * symulates "turning off preedit state". 5275 */ 5276 xim_set_focus(FALSE); 5277 gdk_ic_destroy(xic); 5278 xim_init(); 5279 xim_can_preediting = FALSE; 5280 5281 /* 2nd, when requested to activate IM, symulate this by sending 5282 * the event. 5283 */ 5284 if (active) 5285 { 5286 im_xim_send_event_imactivate(); 5287 xim_can_preediting = TRUE; 5288 } 5289 } 5290 } 5291 else 5292 { 5293 # ifndef XIMPreeditUnKnown 5294 /* X11R5 doesn't have these, it looks safe enough to define here. */ 5295 typedef unsigned long XIMPreeditState; 5296 # define XIMPreeditUnKnown 0L 5297 # define XIMPreeditEnable 1L 5298 # define XIMPreeditDisable (1L<<1) 5299 # define XNPreeditState "preeditState" 5300 # endif 5301 XIMPreeditState preedit_state = XIMPreeditUnKnown; 5302 XVaNestedList preedit_attr; 5303 XIC pxic; 5304 5305 preedit_attr = XVaCreateNestedList(0, 5306 XNPreeditState, &preedit_state, 5307 NULL); 5308 pxic = ((GdkICPrivate *)xic)->xic; 5309 5310 if (!XGetICValues(pxic, XNPreeditAttributes, preedit_attr, NULL)) 5311 { 5312 XFree(preedit_attr); 5313 preedit_attr = XVaCreateNestedList(0, 5314 XNPreeditState, 5315 active ? XIMPreeditEnable : XIMPreeditDisable, 5316 NULL); 5317 XSetICValues(pxic, XNPreeditAttributes, preedit_attr, NULL); 5318 xim_can_preediting = active; 5319 xim_is_active = active; 5320 } 5321 XFree(preedit_attr); 5322 } 5323 if (xim_input_style & XIMPreeditCallbacks) 5324 { 5325 preedit_buf_len = 0; 5326 init_preedit_start_col(); 5327 } 5328 #else 5329 # if 0 5330 /* When had tested kinput2 + canna + Athena GUI version with 5331 * 'imactivatekey' is "s-space", im_xim_send_event_imactivate() did not 5332 * work correctly. It just inserted one space. I don't know why we 5333 * couldn't switch state of XIM preediting. This is reason why these 5334 * codes are commented out. 5335 */ 5336 /* First, force destroy old IC, and create new one. It symulates 5337 * "turning off preedit state". 5338 */ 5339 xim_set_focus(FALSE); 5340 XDestroyIC(xic); 5341 xic = NULL; 5342 xim_init(); 5343 5344 /* 2nd, when requested to activate IM, symulate this by sending the 5345 * event. 5346 */ 5347 if (active) 5348 im_xim_send_event_imactivate(); 5349 # endif 5350 #endif 5351 xim_set_preedit(); 5352 } 5353 5354 /* 5355 * Adjust using XIM for gaining or losing keyboard focus. Also called when 5356 * "xim_is_active" changes. 5357 */ 5358 void 5359 xim_set_focus(focus) 5360 int focus; 5361 { 5362 if (xic == NULL) 5363 return; 5364 5365 /* 5366 * XIM only gets focus when the Vim window has keyboard focus and XIM has 5367 * been set active for the current mode. 5368 */ 5369 if (focus && xim_is_active) 5370 { 5371 if (!xim_has_focus) 5372 { 5373 xim_has_focus = TRUE; 5374 #ifdef FEAT_GUI_GTK 5375 gdk_im_begin(xic, gui.drawarea->window); 5376 #else 5377 XSetICFocus(xic); 5378 #endif 5379 } 5380 } 5381 else 5382 { 5383 if (xim_has_focus) 5384 { 5385 xim_has_focus = FALSE; 5386 #ifdef FEAT_GUI_GTK 5387 gdk_im_end(); 5388 #else 5389 XUnsetICFocus(xic); 5390 #endif 5391 } 5392 } 5393 } 5394 5395 void 5396 im_set_position(row, col) 5397 int row UNUSED; 5398 int col UNUSED; 5399 { 5400 xim_set_preedit(); 5401 } 5402 5403 /* 5404 * Set the XIM to the current cursor position. 5405 */ 5406 void 5407 xim_set_preedit() 5408 { 5409 if (xic == NULL) 5410 return; 5411 5412 xim_set_focus(TRUE); 5413 5414 #ifdef FEAT_GUI_GTK 5415 if (gdk_im_ready()) 5416 { 5417 int attrmask; 5418 GdkICAttr *attr; 5419 5420 if (!xic_attr) 5421 return; 5422 5423 attr = xic_attr; 5424 attrmask = 0; 5425 5426 # ifdef FEAT_XFONTSET 5427 if ((xim_input_style & (int)GDK_IM_PREEDIT_POSITION) 5428 && gui.fontset != NOFONTSET 5429 && gui.fontset->type == GDK_FONT_FONTSET) 5430 { 5431 if (!xim_has_focus) 5432 { 5433 if (attr->spot_location.y >= 0) 5434 { 5435 attr->spot_location.x = 0; 5436 attr->spot_location.y = -100; 5437 attrmask |= (int)GDK_IC_SPOT_LOCATION; 5438 } 5439 } 5440 else 5441 { 5442 gint width, height; 5443 5444 if (attr->spot_location.x != TEXT_X(gui.col) 5445 || attr->spot_location.y != TEXT_Y(gui.row)) 5446 { 5447 attr->spot_location.x = TEXT_X(gui.col); 5448 attr->spot_location.y = TEXT_Y(gui.row); 5449 attrmask |= (int)GDK_IC_SPOT_LOCATION; 5450 } 5451 5452 gdk_window_get_size(gui.drawarea->window, &width, &height); 5453 width -= 2 * gui.border_offset; 5454 height -= 2 * gui.border_offset; 5455 if (xim_input_style & (int)GDK_IM_STATUS_AREA) 5456 height -= gui.char_height; 5457 if (attr->preedit_area.width != width 5458 || attr->preedit_area.height != height) 5459 { 5460 attr->preedit_area.x = gui.border_offset; 5461 attr->preedit_area.y = gui.border_offset; 5462 attr->preedit_area.width = width; 5463 attr->preedit_area.height = height; 5464 attrmask |= (int)GDK_IC_PREEDIT_AREA; 5465 } 5466 5467 if (attr->preedit_fontset != gui.current_font) 5468 { 5469 attr->preedit_fontset = gui.current_font; 5470 attrmask |= (int)GDK_IC_PREEDIT_FONTSET; 5471 } 5472 } 5473 } 5474 # endif /* FEAT_XFONTSET */ 5475 5476 if (xim_fg_color == INVALCOLOR) 5477 { 5478 xim_fg_color = gui.def_norm_pixel; 5479 xim_bg_color = gui.def_back_pixel; 5480 } 5481 if (attr->preedit_foreground.pixel != xim_fg_color) 5482 { 5483 attr->preedit_foreground.pixel = xim_fg_color; 5484 attrmask |= (int)GDK_IC_PREEDIT_FOREGROUND; 5485 } 5486 if (attr->preedit_background.pixel != xim_bg_color) 5487 { 5488 attr->preedit_background.pixel = xim_bg_color; 5489 attrmask |= (int)GDK_IC_PREEDIT_BACKGROUND; 5490 } 5491 5492 if (attrmask != 0) 5493 gdk_ic_set_attr(xic, attr, (GdkICAttributesType)attrmask); 5494 } 5495 #else /* FEAT_GUI_GTK */ 5496 { 5497 XVaNestedList attr_list; 5498 XRectangle spot_area; 5499 XPoint over_spot; 5500 int line_space; 5501 5502 if (!xim_has_focus) 5503 { 5504 /* hide XIM cursor */ 5505 over_spot.x = 0; 5506 over_spot.y = -100; /* arbitrary invisible position */ 5507 attr_list = (XVaNestedList) XVaCreateNestedList(0, 5508 XNSpotLocation, 5509 &over_spot, 5510 NULL); 5511 XSetICValues(xic, XNPreeditAttributes, attr_list, NULL); 5512 XFree(attr_list); 5513 return; 5514 } 5515 5516 if (input_style & XIMPreeditPosition) 5517 { 5518 if (xim_fg_color == INVALCOLOR) 5519 { 5520 xim_fg_color = gui.def_norm_pixel; 5521 xim_bg_color = gui.def_back_pixel; 5522 } 5523 over_spot.x = TEXT_X(gui.col); 5524 over_spot.y = TEXT_Y(gui.row); 5525 spot_area.x = 0; 5526 spot_area.y = 0; 5527 spot_area.height = gui.char_height * Rows; 5528 spot_area.width = gui.char_width * Columns; 5529 line_space = gui.char_height; 5530 attr_list = (XVaNestedList) XVaCreateNestedList(0, 5531 XNSpotLocation, &over_spot, 5532 XNForeground, (Pixel) xim_fg_color, 5533 XNBackground, (Pixel) xim_bg_color, 5534 XNArea, &spot_area, 5535 XNLineSpace, line_space, 5536 NULL); 5537 if (XSetICValues(xic, XNPreeditAttributes, attr_list, NULL)) 5538 EMSG(_("E284: Cannot set IC values")); 5539 XFree(attr_list); 5540 } 5541 } 5542 #endif /* FEAT_GUI_GTK */ 5543 } 5544 5545 /* 5546 * Set up the status area. 5547 * 5548 * This should use a separate Widget, but that seems not possible, because 5549 * preedit_area and status_area should be set to the same window as for the 5550 * text input. Unfortunately this means the status area pollutes the text 5551 * window... 5552 */ 5553 void 5554 xim_set_status_area() 5555 { 5556 if (xic == NULL) 5557 return; 5558 5559 #ifdef FEAT_GUI_GTK 5560 # if defined(FEAT_XFONTSET) 5561 if (use_status_area) 5562 { 5563 GdkICAttr *attr; 5564 int style; 5565 gint width, height; 5566 GtkWidget *widget; 5567 int attrmask; 5568 5569 if (!xic_attr) 5570 return; 5571 5572 attr = xic_attr; 5573 attrmask = 0; 5574 style = (int)gdk_ic_get_style(xic); 5575 if ((style & (int)GDK_IM_STATUS_MASK) == (int)GDK_IM_STATUS_AREA) 5576 { 5577 if (gui.fontset != NOFONTSET 5578 && gui.fontset->type == GDK_FONT_FONTSET) 5579 { 5580 widget = gui.mainwin; 5581 gdk_window_get_size(widget->window, &width, &height); 5582 5583 attrmask |= (int)GDK_IC_STATUS_AREA; 5584 attr->status_area.x = 0; 5585 attr->status_area.y = height - gui.char_height - 1; 5586 attr->status_area.width = width; 5587 attr->status_area.height = gui.char_height; 5588 } 5589 } 5590 if (attrmask != 0) 5591 gdk_ic_set_attr(xic, attr, (GdkICAttributesType)attrmask); 5592 } 5593 # endif 5594 #else 5595 { 5596 XVaNestedList preedit_list = 0, status_list = 0, list = 0; 5597 XRectangle pre_area, status_area; 5598 5599 if (input_style & XIMStatusArea) 5600 { 5601 if (input_style & XIMPreeditArea) 5602 { 5603 XRectangle *needed_rect; 5604 5605 /* to get status_area width */ 5606 status_list = XVaCreateNestedList(0, XNAreaNeeded, 5607 &needed_rect, NULL); 5608 XGetICValues(xic, XNStatusAttributes, status_list, NULL); 5609 XFree(status_list); 5610 5611 status_area.width = needed_rect->width; 5612 } 5613 else 5614 status_area.width = gui.char_width * Columns; 5615 5616 status_area.x = 0; 5617 status_area.y = gui.char_height * Rows + gui.border_offset; 5618 if (gui.which_scrollbars[SBAR_BOTTOM]) 5619 status_area.y += gui.scrollbar_height; 5620 #ifdef FEAT_MENU 5621 if (gui.menu_is_active) 5622 status_area.y += gui.menu_height; 5623 #endif 5624 status_area.height = gui.char_height; 5625 status_list = XVaCreateNestedList(0, XNArea, &status_area, NULL); 5626 } 5627 else 5628 { 5629 status_area.x = 0; 5630 status_area.y = gui.char_height * Rows + gui.border_offset; 5631 if (gui.which_scrollbars[SBAR_BOTTOM]) 5632 status_area.y += gui.scrollbar_height; 5633 #ifdef FEAT_MENU 5634 if (gui.menu_is_active) 5635 status_area.y += gui.menu_height; 5636 #endif 5637 status_area.width = 0; 5638 status_area.height = gui.char_height; 5639 } 5640 5641 if (input_style & XIMPreeditArea) /* off-the-spot */ 5642 { 5643 pre_area.x = status_area.x + status_area.width; 5644 pre_area.y = gui.char_height * Rows + gui.border_offset; 5645 pre_area.width = gui.char_width * Columns - pre_area.x; 5646 if (gui.which_scrollbars[SBAR_BOTTOM]) 5647 pre_area.y += gui.scrollbar_height; 5648 #ifdef FEAT_MENU 5649 if (gui.menu_is_active) 5650 pre_area.y += gui.menu_height; 5651 #endif 5652 pre_area.height = gui.char_height; 5653 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL); 5654 } 5655 else if (input_style & XIMPreeditPosition) /* over-the-spot */ 5656 { 5657 pre_area.x = 0; 5658 pre_area.y = 0; 5659 pre_area.height = gui.char_height * Rows; 5660 pre_area.width = gui.char_width * Columns; 5661 preedit_list = XVaCreateNestedList(0, XNArea, &pre_area, NULL); 5662 } 5663 5664 if (preedit_list && status_list) 5665 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list, 5666 XNStatusAttributes, status_list, NULL); 5667 else if (preedit_list) 5668 list = XVaCreateNestedList(0, XNPreeditAttributes, preedit_list, 5669 NULL); 5670 else if (status_list) 5671 list = XVaCreateNestedList(0, XNStatusAttributes, status_list, 5672 NULL); 5673 else 5674 list = NULL; 5675 5676 if (list) 5677 { 5678 XSetICValues(xic, XNVaNestedList, list, NULL); 5679 XFree(list); 5680 } 5681 if (status_list) 5682 XFree(status_list); 5683 if (preedit_list) 5684 XFree(preedit_list); 5685 } 5686 #endif 5687 } 5688 5689 #if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK) 5690 static char e_xim[] = N_("E285: Failed to create input context"); 5691 #endif 5692 5693 #if defined(FEAT_GUI_X11) || defined(PROTO) 5694 # if defined(XtSpecificationRelease) && XtSpecificationRelease >= 6 && !defined(sun) 5695 # define USE_X11R6_XIM 5696 # endif 5697 5698 static int xim_real_init __ARGS((Window x11_window, Display *x11_display)); 5699 5700 5701 #ifdef USE_X11R6_XIM 5702 static void xim_instantiate_cb __ARGS((Display *display, XPointer client_data, XPointer call_data)); 5703 static void xim_destroy_cb __ARGS((XIM im, XPointer client_data, XPointer call_data)); 5704 5705 static void 5706 xim_instantiate_cb(display, client_data, call_data) 5707 Display *display; 5708 XPointer client_data UNUSED; 5709 XPointer call_data UNUSED; 5710 { 5711 Window x11_window; 5712 Display *x11_display; 5713 5714 #ifdef XIM_DEBUG 5715 xim_log("xim_instantiate_cb()\n"); 5716 #endif 5717 5718 gui_get_x11_windis(&x11_window, &x11_display); 5719 if (display != x11_display) 5720 return; 5721 5722 xim_real_init(x11_window, x11_display); 5723 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 5724 if (xic != NULL) 5725 XUnregisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, 5726 xim_instantiate_cb, NULL); 5727 } 5728 5729 static void 5730 xim_destroy_cb(im, client_data, call_data) 5731 XIM im UNUSED; 5732 XPointer client_data UNUSED; 5733 XPointer call_data UNUSED; 5734 { 5735 Window x11_window; 5736 Display *x11_display; 5737 5738 #ifdef XIM_DEBUG 5739 xim_log("xim_destroy_cb()\n"); 5740 #endif 5741 gui_get_x11_windis(&x11_window, &x11_display); 5742 5743 xic = NULL; 5744 status_area_enabled = FALSE; 5745 5746 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 5747 5748 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, 5749 xim_instantiate_cb, NULL); 5750 } 5751 #endif 5752 5753 void 5754 xim_init() 5755 { 5756 Window x11_window; 5757 Display *x11_display; 5758 5759 #ifdef XIM_DEBUG 5760 xim_log("xim_init()\n"); 5761 #endif 5762 5763 gui_get_x11_windis(&x11_window, &x11_display); 5764 5765 xic = NULL; 5766 5767 if (xim_real_init(x11_window, x11_display)) 5768 return; 5769 5770 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 5771 5772 #ifdef USE_X11R6_XIM 5773 XRegisterIMInstantiateCallback(x11_display, NULL, NULL, NULL, 5774 xim_instantiate_cb, NULL); 5775 #endif 5776 } 5777 5778 static int 5779 xim_real_init(x11_window, x11_display) 5780 Window x11_window; 5781 Display *x11_display; 5782 { 5783 int i; 5784 char *p, 5785 *s, 5786 *ns, 5787 *end, 5788 tmp[1024]; 5789 #define IMLEN_MAX 40 5790 char buf[IMLEN_MAX + 7]; 5791 XIM xim = NULL; 5792 XIMStyles *xim_styles; 5793 XIMStyle this_input_style = 0; 5794 Boolean found; 5795 XPoint over_spot; 5796 XVaNestedList preedit_list, status_list; 5797 5798 input_style = 0; 5799 status_area_enabled = FALSE; 5800 5801 if (xic != NULL) 5802 return FALSE; 5803 5804 if (gui.rsrc_input_method != NULL && *gui.rsrc_input_method != NUL) 5805 { 5806 strcpy(tmp, gui.rsrc_input_method); 5807 for (ns = s = tmp; ns != NULL && *s != NUL;) 5808 { 5809 s = (char *)skipwhite((char_u *)s); 5810 if (*s == NUL) 5811 break; 5812 if ((ns = end = strchr(s, ',')) == NULL) 5813 end = s + strlen(s); 5814 while (isspace(((char_u *)end)[-1])) 5815 end--; 5816 *end = NUL; 5817 5818 if (strlen(s) <= IMLEN_MAX) 5819 { 5820 strcpy(buf, "@im="); 5821 strcat(buf, s); 5822 if ((p = XSetLocaleModifiers(buf)) != NULL && *p != NUL 5823 && (xim = XOpenIM(x11_display, NULL, NULL, NULL)) 5824 != NULL) 5825 break; 5826 } 5827 5828 s = ns + 1; 5829 } 5830 } 5831 5832 if (xim == NULL && (p = XSetLocaleModifiers("")) != NULL && *p != NUL) 5833 xim = XOpenIM(x11_display, NULL, NULL, NULL); 5834 5835 /* This is supposed to be useful to obtain characters through 5836 * XmbLookupString() without really using a XIM. */ 5837 if (xim == NULL && (p = XSetLocaleModifiers("@im=none")) != NULL 5838 && *p != NUL) 5839 xim = XOpenIM(x11_display, NULL, NULL, NULL); 5840 5841 if (xim == NULL) 5842 { 5843 /* Only give this message when verbose is set, because too many people 5844 * got this message when they didn't want to use a XIM. */ 5845 if (p_verbose > 0) 5846 { 5847 verbose_enter(); 5848 EMSG(_("E286: Failed to open input method")); 5849 verbose_leave(); 5850 } 5851 return FALSE; 5852 } 5853 5854 #ifdef USE_X11R6_XIM 5855 { 5856 XIMCallback destroy_cb; 5857 5858 destroy_cb.callback = xim_destroy_cb; 5859 destroy_cb.client_data = NULL; 5860 if (XSetIMValues(xim, XNDestroyCallback, &destroy_cb, NULL)) 5861 EMSG(_("E287: Warning: Could not set destroy callback to IM")); 5862 } 5863 #endif 5864 5865 if (XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL) || !xim_styles) 5866 { 5867 EMSG(_("E288: input method doesn't support any style")); 5868 XCloseIM(xim); 5869 return FALSE; 5870 } 5871 5872 found = False; 5873 strcpy(tmp, gui.rsrc_preedit_type_name); 5874 for (s = tmp; s && !found; ) 5875 { 5876 while (*s && isspace((unsigned char)*s)) 5877 s++; 5878 if (!*s) 5879 break; 5880 if ((ns = end = strchr(s, ',')) != 0) 5881 ns++; 5882 else 5883 end = s + strlen(s); 5884 while (isspace((unsigned char)*end)) 5885 end--; 5886 *end = '\0'; 5887 5888 if (!strcmp(s, "OverTheSpot")) 5889 this_input_style = (XIMPreeditPosition | XIMStatusArea); 5890 else if (!strcmp(s, "OffTheSpot")) 5891 this_input_style = (XIMPreeditArea | XIMStatusArea); 5892 else if (!strcmp(s, "Root")) 5893 this_input_style = (XIMPreeditNothing | XIMStatusNothing); 5894 5895 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++) 5896 { 5897 if (this_input_style == xim_styles->supported_styles[i]) 5898 { 5899 found = True; 5900 break; 5901 } 5902 } 5903 if (!found) 5904 for (i = 0; (unsigned short)i < xim_styles->count_styles; i++) 5905 { 5906 if ((xim_styles->supported_styles[i] & this_input_style) 5907 == (this_input_style & ~XIMStatusArea)) 5908 { 5909 this_input_style &= ~XIMStatusArea; 5910 found = True; 5911 break; 5912 } 5913 } 5914 5915 s = ns; 5916 } 5917 XFree(xim_styles); 5918 5919 if (!found) 5920 { 5921 /* Only give this message when verbose is set, because too many people 5922 * got this message when they didn't want to use a XIM. */ 5923 if (p_verbose > 0) 5924 { 5925 verbose_enter(); 5926 EMSG(_("E289: input method doesn't support my preedit type")); 5927 verbose_leave(); 5928 } 5929 XCloseIM(xim); 5930 return FALSE; 5931 } 5932 5933 over_spot.x = TEXT_X(gui.col); 5934 over_spot.y = TEXT_Y(gui.row); 5935 input_style = this_input_style; 5936 5937 /* A crash was reported when trying to pass gui.norm_font as XNFontSet, 5938 * thus that has been removed. Hopefully the default works... */ 5939 #ifdef FEAT_XFONTSET 5940 if (gui.fontset != NOFONTSET) 5941 { 5942 preedit_list = XVaCreateNestedList(0, 5943 XNSpotLocation, &over_spot, 5944 XNForeground, (Pixel)gui.def_norm_pixel, 5945 XNBackground, (Pixel)gui.def_back_pixel, 5946 XNFontSet, (XFontSet)gui.fontset, 5947 NULL); 5948 status_list = XVaCreateNestedList(0, 5949 XNForeground, (Pixel)gui.def_norm_pixel, 5950 XNBackground, (Pixel)gui.def_back_pixel, 5951 XNFontSet, (XFontSet)gui.fontset, 5952 NULL); 5953 } 5954 else 5955 #endif 5956 { 5957 preedit_list = XVaCreateNestedList(0, 5958 XNSpotLocation, &over_spot, 5959 XNForeground, (Pixel)gui.def_norm_pixel, 5960 XNBackground, (Pixel)gui.def_back_pixel, 5961 NULL); 5962 status_list = XVaCreateNestedList(0, 5963 XNForeground, (Pixel)gui.def_norm_pixel, 5964 XNBackground, (Pixel)gui.def_back_pixel, 5965 NULL); 5966 } 5967 5968 xic = XCreateIC(xim, 5969 XNInputStyle, input_style, 5970 XNClientWindow, x11_window, 5971 XNFocusWindow, gui.wid, 5972 XNPreeditAttributes, preedit_list, 5973 XNStatusAttributes, status_list, 5974 NULL); 5975 XFree(status_list); 5976 XFree(preedit_list); 5977 if (xic != NULL) 5978 { 5979 if (input_style & XIMStatusArea) 5980 { 5981 xim_set_status_area(); 5982 status_area_enabled = TRUE; 5983 } 5984 else 5985 gui_set_shellsize(FALSE, FALSE, RESIZE_BOTH); 5986 } 5987 else 5988 { 5989 EMSG(_(e_xim)); 5990 XCloseIM(xim); 5991 return FALSE; 5992 } 5993 5994 return TRUE; 5995 } 5996 5997 #endif /* FEAT_GUI_X11 */ 5998 5999 #if defined(FEAT_GUI_GTK) || defined(PROTO) 6000 6001 # ifdef FEAT_XFONTSET 6002 static char e_overthespot[] = N_("E290: over-the-spot style requires fontset"); 6003 # endif 6004 6005 # ifdef PROTO 6006 typedef int GdkIC; 6007 # endif 6008 6009 void 6010 xim_decide_input_style() 6011 { 6012 /* GDK_IM_STATUS_CALLBACKS was disabled, enabled it to allow Japanese 6013 * OverTheSpot. */ 6014 int supported_style = (int)GDK_IM_PREEDIT_NONE | 6015 (int)GDK_IM_PREEDIT_NOTHING | 6016 (int)GDK_IM_PREEDIT_POSITION | 6017 (int)GDK_IM_PREEDIT_CALLBACKS | 6018 (int)GDK_IM_STATUS_CALLBACKS | 6019 (int)GDK_IM_STATUS_AREA | 6020 (int)GDK_IM_STATUS_NONE | 6021 (int)GDK_IM_STATUS_NOTHING; 6022 6023 #ifdef XIM_DEBUG 6024 xim_log("xim_decide_input_style()\n"); 6025 #endif 6026 6027 if (!gdk_im_ready()) 6028 xim_input_style = 0; 6029 else 6030 { 6031 if (gtk_major_version > 1 6032 || (gtk_major_version == 1 6033 && (gtk_minor_version > 2 6034 || (gtk_minor_version == 2 && gtk_micro_version >= 3)))) 6035 use_status_area = TRUE; 6036 else 6037 { 6038 EMSG(_("E291: Your GTK+ is older than 1.2.3. Status area disabled")); 6039 use_status_area = FALSE; 6040 } 6041 #ifdef FEAT_XFONTSET 6042 if (gui.fontset == NOFONTSET || gui.fontset->type != GDK_FONT_FONTSET) 6043 #endif 6044 supported_style &= ~((int)GDK_IM_PREEDIT_POSITION 6045 | (int)GDK_IM_STATUS_AREA); 6046 if (!use_status_area) 6047 supported_style &= ~(int)GDK_IM_STATUS_AREA; 6048 xim_input_style = (int)gdk_im_decide_style((GdkIMStyle)supported_style); 6049 } 6050 } 6051 6052 static void 6053 preedit_start_cbproc(XIC thexic UNUSED, 6054 XPointer client_data UNUSED, 6055 XPointer call_data UNUSED) 6056 { 6057 #ifdef XIM_DEBUG 6058 xim_log("xim_decide_input_style()\n"); 6059 #endif 6060 6061 draw_feedback = NULL; 6062 xim_can_preediting = TRUE; 6063 xim_has_preediting = TRUE; 6064 gui_update_cursor(TRUE, FALSE); 6065 if (showmode() > 0) 6066 { 6067 setcursor(); 6068 out_flush(); 6069 } 6070 } 6071 6072 static void 6073 xim_back_delete(int n) 6074 { 6075 char_u str[3]; 6076 6077 str[0] = CSI; 6078 str[1] = 'k'; 6079 str[2] = 'b'; 6080 while (n-- > 0) 6081 add_to_input_buf(str, 3); 6082 } 6083 6084 static GSList *key_press_event_queue = NULL; 6085 static gboolean processing_queued_event = FALSE; 6086 6087 static void 6088 preedit_draw_cbproc(XIC thexic UNUSED, 6089 XPointer client_data UNUSED, 6090 XPointer call_data) 6091 { 6092 XIMPreeditDrawCallbackStruct *draw_data; 6093 XIMText *text; 6094 char *src; 6095 GSList *event_queue; 6096 6097 #ifdef XIM_DEBUG 6098 xim_log("preedit_draw_cbproc()\n"); 6099 #endif 6100 6101 draw_data = (XIMPreeditDrawCallbackStruct *) call_data; 6102 text = (XIMText *) draw_data->text; 6103 6104 if ((text == NULL && draw_data->chg_length == preedit_buf_len) 6105 || preedit_buf_len == 0) 6106 { 6107 init_preedit_start_col(); 6108 vim_free(draw_feedback); 6109 draw_feedback = NULL; 6110 } 6111 if (draw_data->chg_length > 0) 6112 { 6113 int bs_cnt; 6114 6115 if (draw_data->chg_length > preedit_buf_len) 6116 bs_cnt = preedit_buf_len; 6117 else 6118 bs_cnt = draw_data->chg_length; 6119 xim_back_delete(bs_cnt); 6120 preedit_buf_len -= bs_cnt; 6121 } 6122 if (text != NULL) 6123 { 6124 int len; 6125 #ifdef FEAT_MBYTE 6126 char_u *buf = NULL; 6127 unsigned int nfeedback = 0; 6128 #endif 6129 char_u *ptr; 6130 6131 src = text->string.multi_byte; 6132 if (src != NULL && !text->encoding_is_wchar) 6133 { 6134 len = strlen(src); 6135 ptr = (char_u *)src; 6136 /* Avoid the enter for decision */ 6137 if (*ptr == '\n') 6138 return; 6139 6140 #ifdef FEAT_MBYTE 6141 if (input_conv.vc_type != CONV_NONE 6142 && (buf = string_convert(&input_conv, 6143 (char_u *)src, &len)) != NULL) 6144 { 6145 /* Converted from 'termencoding' to 'encoding'. */ 6146 add_to_input_buf_csi(buf, len); 6147 ptr = buf; 6148 } 6149 else 6150 #endif 6151 add_to_input_buf_csi((char_u *)src, len); 6152 /* Add count of character to preedit_buf_len */ 6153 while (*ptr != NUL) 6154 { 6155 #ifdef FEAT_MBYTE 6156 if (draw_data->text->feedback != NULL) 6157 { 6158 if (draw_feedback == NULL) 6159 draw_feedback = (char *)alloc(draw_data->chg_first 6160 + text->length); 6161 else 6162 draw_feedback = vim_realloc(draw_feedback, 6163 draw_data->chg_first + text->length); 6164 if (draw_feedback != NULL) 6165 { 6166 draw_feedback[nfeedback + draw_data->chg_first] 6167 = draw_data->text->feedback[nfeedback]; 6168 nfeedback++; 6169 } 6170 } 6171 if (has_mbyte) 6172 ptr += (*mb_ptr2len)(ptr); 6173 else 6174 #endif 6175 ptr++; 6176 preedit_buf_len++; 6177 } 6178 #ifdef FEAT_MBYTE 6179 vim_free(buf); 6180 #endif 6181 preedit_end_col = MAXCOL; 6182 } 6183 } 6184 if (text != NULL || draw_data->chg_length > 0) 6185 { 6186 event_queue = key_press_event_queue; 6187 processing_queued_event = TRUE; 6188 while (event_queue != NULL && processing_queued_event) 6189 { 6190 GdkEvent *ev = event_queue->data; 6191 6192 gboolean *ret; 6193 gtk_signal_emit_by_name((GtkObject*)gui.mainwin, "key_press_event", 6194 ev, &ret); 6195 gdk_event_free(ev); 6196 event_queue = event_queue->next; 6197 } 6198 processing_queued_event = FALSE; 6199 if (key_press_event_queue) 6200 { 6201 g_slist_free(key_press_event_queue); 6202 key_press_event_queue = NULL; 6203 } 6204 } 6205 if (gtk_main_level() > 0) 6206 gtk_main_quit(); 6207 } 6208 6209 /* 6210 * Retrieve the highlighting attributes at column col in the preedit string. 6211 * Return -1 if not in preediting mode or if col is out of range. 6212 */ 6213 int 6214 im_get_feedback_attr(int col) 6215 { 6216 if (draw_feedback != NULL && col < preedit_buf_len) 6217 { 6218 if (draw_feedback[col] & XIMReverse) 6219 return HL_INVERSE; 6220 else if (draw_feedback[col] & XIMUnderline) 6221 return HL_UNDERLINE; 6222 else 6223 return hl_attr(HLF_V); 6224 } 6225 6226 return -1; 6227 } 6228 6229 static void 6230 preedit_caret_cbproc(XIC thexic UNUSED, 6231 XPointer client_data UNUSED, 6232 XPointer call_data UNUSED) 6233 { 6234 #ifdef XIM_DEBUG 6235 xim_log("preedit_caret_cbproc()\n"); 6236 #endif 6237 } 6238 6239 static void 6240 preedit_done_cbproc(XIC thexic UNUSED, 6241 XPointer client_data UNUSED, 6242 XPointer call_data UNUSED) 6243 { 6244 #ifdef XIM_DEBUG 6245 xim_log("preedit_done_cbproc()\n"); 6246 #endif 6247 6248 vim_free(draw_feedback); 6249 draw_feedback = NULL; 6250 xim_can_preediting = FALSE; 6251 xim_has_preediting = FALSE; 6252 gui_update_cursor(TRUE, FALSE); 6253 if (showmode() > 0) 6254 { 6255 setcursor(); 6256 out_flush(); 6257 } 6258 } 6259 6260 void 6261 xim_reset(void) 6262 { 6263 char *text; 6264 6265 #ifdef XIM_DEBUG 6266 xim_log("xim_reset()\n"); 6267 #endif 6268 6269 if (xic != NULL) 6270 { 6271 text = XmbResetIC(((GdkICPrivate *)xic)->xic); 6272 if (text != NULL && !(xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS)) 6273 add_to_input_buf_csi((char_u *)text, strlen(text)); 6274 else 6275 preedit_buf_len = 0; 6276 if (text != NULL) 6277 XFree(text); 6278 } 6279 } 6280 6281 int 6282 xim_queue_key_press_event(GdkEventKey *event, int down UNUSED) 6283 { 6284 #ifdef XIM_DEBUG 6285 xim_log("xim_queue_key_press_event()\n"); 6286 #endif 6287 6288 if (preedit_buf_len <= 0) 6289 return FALSE; 6290 if (processing_queued_event) 6291 processing_queued_event = FALSE; 6292 6293 key_press_event_queue = g_slist_append(key_press_event_queue, 6294 gdk_event_copy((GdkEvent *)event)); 6295 return TRUE; 6296 } 6297 6298 static void 6299 preedit_callback_setup(GdkIC *ic UNUSED) 6300 { 6301 XIC xxic; 6302 XVaNestedList preedit_attr; 6303 XIMCallback preedit_start_cb; 6304 XIMCallback preedit_draw_cb; 6305 XIMCallback preedit_caret_cb; 6306 XIMCallback preedit_done_cb; 6307 6308 xxic = ((GdkICPrivate*)xic)->xic; 6309 preedit_start_cb.callback = (XIMProc)preedit_start_cbproc; 6310 preedit_draw_cb.callback = (XIMProc)preedit_draw_cbproc; 6311 preedit_caret_cb.callback = (XIMProc)preedit_caret_cbproc; 6312 preedit_done_cb.callback = (XIMProc)preedit_done_cbproc; 6313 preedit_attr 6314 = XVaCreateNestedList(0, 6315 XNPreeditStartCallback, &preedit_start_cb, 6316 XNPreeditDrawCallback, &preedit_draw_cb, 6317 XNPreeditCaretCallback, &preedit_caret_cb, 6318 XNPreeditDoneCallback, &preedit_done_cb, 6319 NULL); 6320 XSetICValues(xxic, XNPreeditAttributes, preedit_attr, NULL); 6321 XFree(preedit_attr); 6322 } 6323 6324 static void 6325 reset_state_setup(GdkIC *ic UNUSED) 6326 { 6327 #ifdef USE_X11R6_XIM 6328 /* don't change the input context when we call reset */ 6329 XSetICValues(((GdkICPrivate *)ic)->xic, XNResetState, XIMPreserveState, 6330 NULL); 6331 #endif 6332 } 6333 6334 void 6335 xim_init(void) 6336 { 6337 #ifdef XIM_DEBUG 6338 xim_log("xim_init()\n"); 6339 #endif 6340 6341 xic = NULL; 6342 xic_attr = NULL; 6343 6344 if (!gdk_im_ready()) 6345 { 6346 if (p_verbose > 0) 6347 { 6348 verbose_enter(); 6349 EMSG(_("E292: Input Method Server is not running")); 6350 verbose_leave(); 6351 } 6352 return; 6353 } 6354 if ((xic_attr = gdk_ic_attr_new()) != NULL) 6355 { 6356 #ifdef FEAT_XFONTSET 6357 gint width, height; 6358 #endif 6359 int mask; 6360 GdkColormap *colormap; 6361 GdkICAttr *attr = xic_attr; 6362 int attrmask = (int)GDK_IC_ALL_REQ; 6363 GtkWidget *widget = gui.drawarea; 6364 6365 attr->style = (GdkIMStyle)xim_input_style; 6366 attr->client_window = gui.mainwin->window; 6367 6368 if ((colormap = gtk_widget_get_colormap(widget)) != 6369 gtk_widget_get_default_colormap()) 6370 { 6371 attrmask |= (int)GDK_IC_PREEDIT_COLORMAP; 6372 attr->preedit_colormap = colormap; 6373 } 6374 attrmask |= (int)GDK_IC_PREEDIT_FOREGROUND; 6375 attrmask |= (int)GDK_IC_PREEDIT_BACKGROUND; 6376 attr->preedit_foreground = widget->style->fg[GTK_STATE_NORMAL]; 6377 attr->preedit_background = widget->style->base[GTK_STATE_NORMAL]; 6378 6379 #ifdef FEAT_XFONTSET 6380 if ((xim_input_style & (int)GDK_IM_PREEDIT_MASK) 6381 == (int)GDK_IM_PREEDIT_POSITION) 6382 { 6383 if (gui.fontset == NOFONTSET 6384 || gui.fontset->type != GDK_FONT_FONTSET) 6385 { 6386 EMSG(_(e_overthespot)); 6387 } 6388 else 6389 { 6390 gdk_window_get_size(widget->window, &width, &height); 6391 6392 attrmask |= (int)GDK_IC_PREEDIT_POSITION_REQ; 6393 attr->spot_location.x = TEXT_X(0); 6394 attr->spot_location.y = TEXT_Y(0); 6395 attr->preedit_area.x = gui.border_offset; 6396 attr->preedit_area.y = gui.border_offset; 6397 attr->preedit_area.width = width - 2*gui.border_offset; 6398 attr->preedit_area.height = height - 2*gui.border_offset; 6399 attr->preedit_fontset = gui.fontset; 6400 } 6401 } 6402 6403 if ((xim_input_style & (int)GDK_IM_STATUS_MASK) 6404 == (int)GDK_IM_STATUS_AREA) 6405 { 6406 if (gui.fontset == NOFONTSET 6407 || gui.fontset->type != GDK_FONT_FONTSET) 6408 { 6409 EMSG(_(e_overthespot)); 6410 } 6411 else 6412 { 6413 gdk_window_get_size(gui.mainwin->window, &width, &height); 6414 attrmask |= (int)GDK_IC_STATUS_AREA_REQ; 6415 attr->status_area.x = 0; 6416 attr->status_area.y = height - gui.char_height - 1; 6417 attr->status_area.width = width; 6418 attr->status_area.height = gui.char_height; 6419 attr->status_fontset = gui.fontset; 6420 } 6421 } 6422 else if ((xim_input_style & (int)GDK_IM_STATUS_MASK) 6423 == (int)GDK_IM_STATUS_CALLBACKS) 6424 { 6425 /* FIXME */ 6426 } 6427 #endif 6428 6429 xic = gdk_ic_new(attr, (GdkICAttributesType)attrmask); 6430 6431 if (xic == NULL) 6432 EMSG(_(e_xim)); 6433 else 6434 { 6435 mask = (int)gdk_window_get_events(widget->window); 6436 mask |= (int)gdk_ic_get_events(xic); 6437 gdk_window_set_events(widget->window, (GdkEventMask)mask); 6438 if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS) 6439 preedit_callback_setup(xic); 6440 reset_state_setup(xic); 6441 } 6442 } 6443 } 6444 6445 void 6446 im_shutdown(void) 6447 { 6448 #ifdef XIM_DEBUG 6449 xim_log("im_shutdown()\n"); 6450 #endif 6451 6452 if (xic != NULL) 6453 { 6454 gdk_im_end(); 6455 gdk_ic_destroy(xic); 6456 xic = NULL; 6457 } 6458 xim_is_active = FALSE; 6459 xim_can_preediting = FALSE; 6460 preedit_start_col = MAXCOL; 6461 xim_has_preediting = FALSE; 6462 } 6463 6464 #endif /* FEAT_GUI_GTK */ 6465 6466 int 6467 xim_get_status_area_height() 6468 { 6469 #ifdef FEAT_GUI_GTK 6470 if (xim_input_style & (int)GDK_IM_STATUS_AREA) 6471 return gui.char_height; 6472 #else 6473 if (status_area_enabled) 6474 return gui.char_height; 6475 #endif 6476 return 0; 6477 } 6478 6479 /* 6480 * Get IM status. When IM is on, return TRUE. Else return FALSE. 6481 * FIXME: This doesn't work correctly: Having focus doesn't always mean XIM is 6482 * active, when not having focus XIM may still be active (e.g., when using a 6483 * tear-off menu item). 6484 */ 6485 int 6486 im_get_status() 6487 { 6488 # ifdef FEAT_GUI_GTK 6489 if (xim_input_style & (int)GDK_IM_PREEDIT_CALLBACKS) 6490 return xim_can_preediting; 6491 # endif 6492 return xim_has_focus; 6493 } 6494 6495 # endif /* !HAVE_GTK2 */ 6496 6497 # if defined(HAVE_GTK2) || defined(PROTO) 6498 int 6499 preedit_get_status(void) 6500 { 6501 return preedit_is_active; 6502 } 6503 # endif 6504 6505 # if defined(FEAT_GUI_GTK) || defined(PROTO) 6506 int 6507 im_is_preediting() 6508 { 6509 return xim_has_preediting; 6510 } 6511 # endif 6512 #endif /* FEAT_XIM */ 6513 6514 #if defined(FEAT_MBYTE) || defined(PROTO) 6515 6516 /* 6517 * Setup "vcp" for conversion from "from" to "to". 6518 * The names must have been made canonical with enc_canonize(). 6519 * vcp->vc_type must have been initialized to CONV_NONE. 6520 * Note: cannot be used for conversion from/to ucs-2 and ucs-4 (will use utf-8 6521 * instead). 6522 * Afterwards invoke with "from" and "to" equal to NULL to cleanup. 6523 * Return FAIL when conversion is not supported, OK otherwise. 6524 */ 6525 int 6526 convert_setup(vcp, from, to) 6527 vimconv_T *vcp; 6528 char_u *from; 6529 char_u *to; 6530 { 6531 return convert_setup_ext(vcp, from, TRUE, to, TRUE); 6532 } 6533 6534 /* 6535 * As convert_setup(), but only when from_unicode_is_utf8 is TRUE will all 6536 * "from" unicode charsets be considered utf-8. Same for "to". 6537 */ 6538 int 6539 convert_setup_ext(vcp, from, from_unicode_is_utf8, to, to_unicode_is_utf8) 6540 vimconv_T *vcp; 6541 char_u *from; 6542 int from_unicode_is_utf8; 6543 char_u *to; 6544 int to_unicode_is_utf8; 6545 { 6546 int from_prop; 6547 int to_prop; 6548 int from_is_utf8; 6549 int to_is_utf8; 6550 6551 /* Reset to no conversion. */ 6552 # ifdef USE_ICONV 6553 if (vcp->vc_type == CONV_ICONV && vcp->vc_fd != (iconv_t)-1) 6554 iconv_close(vcp->vc_fd); 6555 # endif 6556 vcp->vc_type = CONV_NONE; 6557 vcp->vc_factor = 1; 6558 vcp->vc_fail = FALSE; 6559 6560 /* No conversion when one of the names is empty or they are equal. */ 6561 if (from == NULL || *from == NUL || to == NULL || *to == NUL 6562 || STRCMP(from, to) == 0) 6563 return OK; 6564 6565 from_prop = enc_canon_props(from); 6566 to_prop = enc_canon_props(to); 6567 if (from_unicode_is_utf8) 6568 from_is_utf8 = from_prop & ENC_UNICODE; 6569 else 6570 from_is_utf8 = from_prop == ENC_UNICODE; 6571 if (to_unicode_is_utf8) 6572 to_is_utf8 = to_prop & ENC_UNICODE; 6573 else 6574 to_is_utf8 = to_prop == ENC_UNICODE; 6575 6576 if ((from_prop & ENC_LATIN1) && to_is_utf8) 6577 { 6578 /* Internal latin1 -> utf-8 conversion. */ 6579 vcp->vc_type = CONV_TO_UTF8; 6580 vcp->vc_factor = 2; /* up to twice as long */ 6581 } 6582 else if ((from_prop & ENC_LATIN9) && to_is_utf8) 6583 { 6584 /* Internal latin9 -> utf-8 conversion. */ 6585 vcp->vc_type = CONV_9_TO_UTF8; 6586 vcp->vc_factor = 3; /* up to three as long (euro sign) */ 6587 } 6588 else if (from_is_utf8 && (to_prop & ENC_LATIN1)) 6589 { 6590 /* Internal utf-8 -> latin1 conversion. */ 6591 vcp->vc_type = CONV_TO_LATIN1; 6592 } 6593 else if (from_is_utf8 && (to_prop & ENC_LATIN9)) 6594 { 6595 /* Internal utf-8 -> latin9 conversion. */ 6596 vcp->vc_type = CONV_TO_LATIN9; 6597 } 6598 #ifdef WIN3264 6599 /* Win32-specific codepage <-> codepage conversion without iconv. */ 6600 else if ((from_is_utf8 || encname2codepage(from) > 0) 6601 && (to_is_utf8 || encname2codepage(to) > 0)) 6602 { 6603 vcp->vc_type = CONV_CODEPAGE; 6604 vcp->vc_factor = 2; /* up to twice as long */ 6605 vcp->vc_cpfrom = from_is_utf8 ? 0 : encname2codepage(from); 6606 vcp->vc_cpto = to_is_utf8 ? 0 : encname2codepage(to); 6607 } 6608 #endif 6609 #ifdef MACOS_X 6610 else if ((from_prop & ENC_MACROMAN) && (to_prop & ENC_LATIN1)) 6611 { 6612 vcp->vc_type = CONV_MAC_LATIN1; 6613 } 6614 else if ((from_prop & ENC_MACROMAN) && to_is_utf8) 6615 { 6616 vcp->vc_type = CONV_MAC_UTF8; 6617 vcp->vc_factor = 2; /* up to twice as long */ 6618 } 6619 else if ((from_prop & ENC_LATIN1) && (to_prop & ENC_MACROMAN)) 6620 { 6621 vcp->vc_type = CONV_LATIN1_MAC; 6622 } 6623 else if (from_is_utf8 && (to_prop & ENC_MACROMAN)) 6624 { 6625 vcp->vc_type = CONV_UTF8_MAC; 6626 } 6627 #endif 6628 # ifdef USE_ICONV 6629 else 6630 { 6631 /* Use iconv() for conversion. */ 6632 vcp->vc_fd = (iconv_t)my_iconv_open( 6633 to_is_utf8 ? (char_u *)"utf-8" : to, 6634 from_is_utf8 ? (char_u *)"utf-8" : from); 6635 if (vcp->vc_fd != (iconv_t)-1) 6636 { 6637 vcp->vc_type = CONV_ICONV; 6638 vcp->vc_factor = 4; /* could be longer too... */ 6639 } 6640 } 6641 # endif 6642 if (vcp->vc_type == CONV_NONE) 6643 return FAIL; 6644 6645 return OK; 6646 } 6647 6648 #if defined(FEAT_GUI) || defined(AMIGA) || defined(WIN3264) \ 6649 || defined(MSDOS) || defined(PROTO) 6650 /* 6651 * Do conversion on typed input characters in-place. 6652 * The input and output are not NUL terminated! 6653 * Returns the length after conversion. 6654 */ 6655 int 6656 convert_input(ptr, len, maxlen) 6657 char_u *ptr; 6658 int len; 6659 int maxlen; 6660 { 6661 return convert_input_safe(ptr, len, maxlen, NULL, NULL); 6662 } 6663 #endif 6664 6665 /* 6666 * Like convert_input(), but when there is an incomplete byte sequence at the 6667 * end return that as an allocated string in "restp" and set "*restlenp" to 6668 * the length. If "restp" is NULL it is not used. 6669 */ 6670 int 6671 convert_input_safe(ptr, len, maxlen, restp, restlenp) 6672 char_u *ptr; 6673 int len; 6674 int maxlen; 6675 char_u **restp; 6676 int *restlenp; 6677 { 6678 char_u *d; 6679 int dlen = len; 6680 int unconvertlen = 0; 6681 6682 d = string_convert_ext(&input_conv, ptr, &dlen, 6683 restp == NULL ? NULL : &unconvertlen); 6684 if (d != NULL) 6685 { 6686 if (dlen <= maxlen) 6687 { 6688 if (unconvertlen > 0) 6689 { 6690 /* Move the unconverted characters to allocated memory. */ 6691 *restp = alloc(unconvertlen); 6692 if (*restp != NULL) 6693 mch_memmove(*restp, ptr + len - unconvertlen, unconvertlen); 6694 *restlenp = unconvertlen; 6695 } 6696 mch_memmove(ptr, d, dlen); 6697 } 6698 else 6699 /* result is too long, keep the unconverted text (the caller must 6700 * have done something wrong!) */ 6701 dlen = len; 6702 vim_free(d); 6703 } 6704 return dlen; 6705 } 6706 6707 /* 6708 * Convert text "ptr[*lenp]" according to "vcp". 6709 * Returns the result in allocated memory and sets "*lenp". 6710 * When "lenp" is NULL, use NUL terminated strings. 6711 * Illegal chars are often changed to "?", unless vcp->vc_fail is set. 6712 * When something goes wrong, NULL is returned and "*lenp" is unchanged. 6713 */ 6714 char_u * 6715 string_convert(vcp, ptr, lenp) 6716 vimconv_T *vcp; 6717 char_u *ptr; 6718 int *lenp; 6719 { 6720 return string_convert_ext(vcp, ptr, lenp, NULL); 6721 } 6722 6723 /* 6724 * Like string_convert(), but when "unconvlenp" is not NULL and there are is 6725 * an incomplete sequence at the end it is not converted and "*unconvlenp" is 6726 * set to the number of remaining bytes. 6727 */ 6728 char_u * 6729 string_convert_ext(vcp, ptr, lenp, unconvlenp) 6730 vimconv_T *vcp; 6731 char_u *ptr; 6732 int *lenp; 6733 int *unconvlenp; 6734 { 6735 char_u *retval = NULL; 6736 char_u *d; 6737 int len; 6738 int i; 6739 int l; 6740 int c; 6741 6742 if (lenp == NULL) 6743 len = (int)STRLEN(ptr); 6744 else 6745 len = *lenp; 6746 if (len == 0) 6747 return vim_strsave((char_u *)""); 6748 6749 switch (vcp->vc_type) 6750 { 6751 case CONV_TO_UTF8: /* latin1 to utf-8 conversion */ 6752 retval = alloc(len * 2 + 1); 6753 if (retval == NULL) 6754 break; 6755 d = retval; 6756 for (i = 0; i < len; ++i) 6757 { 6758 c = ptr[i]; 6759 if (c < 0x80) 6760 *d++ = c; 6761 else 6762 { 6763 *d++ = 0xc0 + ((unsigned)c >> 6); 6764 *d++ = 0x80 + (c & 0x3f); 6765 } 6766 } 6767 *d = NUL; 6768 if (lenp != NULL) 6769 *lenp = (int)(d - retval); 6770 break; 6771 6772 case CONV_9_TO_UTF8: /* latin9 to utf-8 conversion */ 6773 retval = alloc(len * 3 + 1); 6774 if (retval == NULL) 6775 break; 6776 d = retval; 6777 for (i = 0; i < len; ++i) 6778 { 6779 c = ptr[i]; 6780 switch (c) 6781 { 6782 case 0xa4: c = 0x20ac; break; /* euro */ 6783 case 0xa6: c = 0x0160; break; /* S hat */ 6784 case 0xa8: c = 0x0161; break; /* S -hat */ 6785 case 0xb4: c = 0x017d; break; /* Z hat */ 6786 case 0xb8: c = 0x017e; break; /* Z -hat */ 6787 case 0xbc: c = 0x0152; break; /* OE */ 6788 case 0xbd: c = 0x0153; break; /* oe */ 6789 case 0xbe: c = 0x0178; break; /* Y */ 6790 } 6791 d += utf_char2bytes(c, d); 6792 } 6793 *d = NUL; 6794 if (lenp != NULL) 6795 *lenp = (int)(d - retval); 6796 break; 6797 6798 case CONV_TO_LATIN1: /* utf-8 to latin1 conversion */ 6799 case CONV_TO_LATIN9: /* utf-8 to latin9 conversion */ 6800 retval = alloc(len + 1); 6801 if (retval == NULL) 6802 break; 6803 d = retval; 6804 for (i = 0; i < len; ++i) 6805 { 6806 l = utf_ptr2len_len(ptr + i, len - i); 6807 if (l == 0) 6808 *d++ = NUL; 6809 else if (l == 1) 6810 { 6811 int l_w = utf8len_tab_zero[ptr[i]]; 6812 6813 if (l_w == 0) 6814 { 6815 /* Illegal utf-8 byte cannot be converted */ 6816 vim_free(retval); 6817 return NULL; 6818 } 6819 if (unconvlenp != NULL && l_w > len - i) 6820 { 6821 /* Incomplete sequence at the end. */ 6822 *unconvlenp = len - i; 6823 break; 6824 } 6825 *d++ = ptr[i]; 6826 } 6827 else 6828 { 6829 c = utf_ptr2char(ptr + i); 6830 if (vcp->vc_type == CONV_TO_LATIN9) 6831 switch (c) 6832 { 6833 case 0x20ac: c = 0xa4; break; /* euro */ 6834 case 0x0160: c = 0xa6; break; /* S hat */ 6835 case 0x0161: c = 0xa8; break; /* S -hat */ 6836 case 0x017d: c = 0xb4; break; /* Z hat */ 6837 case 0x017e: c = 0xb8; break; /* Z -hat */ 6838 case 0x0152: c = 0xbc; break; /* OE */ 6839 case 0x0153: c = 0xbd; break; /* oe */ 6840 case 0x0178: c = 0xbe; break; /* Y */ 6841 case 0xa4: 6842 case 0xa6: 6843 case 0xa8: 6844 case 0xb4: 6845 case 0xb8: 6846 case 0xbc: 6847 case 0xbd: 6848 case 0xbe: c = 0x100; break; /* not in latin9 */ 6849 } 6850 if (!utf_iscomposing(c)) /* skip composing chars */ 6851 { 6852 if (c < 0x100) 6853 *d++ = c; 6854 else if (vcp->vc_fail) 6855 { 6856 vim_free(retval); 6857 return NULL; 6858 } 6859 else 6860 { 6861 *d++ = 0xbf; 6862 if (utf_char2cells(c) > 1) 6863 *d++ = '?'; 6864 } 6865 } 6866 i += l - 1; 6867 } 6868 } 6869 *d = NUL; 6870 if (lenp != NULL) 6871 *lenp = (int)(d - retval); 6872 break; 6873 6874 # ifdef MACOS_CONVERT 6875 case CONV_MAC_LATIN1: 6876 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6877 'm', 'l', unconvlenp); 6878 break; 6879 6880 case CONV_LATIN1_MAC: 6881 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6882 'l', 'm', unconvlenp); 6883 break; 6884 6885 case CONV_MAC_UTF8: 6886 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6887 'm', 'u', unconvlenp); 6888 break; 6889 6890 case CONV_UTF8_MAC: 6891 retval = mac_string_convert(ptr, len, lenp, vcp->vc_fail, 6892 'u', 'm', unconvlenp); 6893 break; 6894 # endif 6895 6896 # ifdef USE_ICONV 6897 case CONV_ICONV: /* conversion with output_conv.vc_fd */ 6898 retval = iconv_string(vcp, ptr, len, unconvlenp, lenp); 6899 break; 6900 # endif 6901 # ifdef WIN3264 6902 case CONV_CODEPAGE: /* codepage -> codepage */ 6903 { 6904 int retlen; 6905 int tmp_len; 6906 short_u *tmp; 6907 6908 /* 1. codepage/UTF-8 -> ucs-2. */ 6909 if (vcp->vc_cpfrom == 0) 6910 tmp_len = utf8_to_utf16(ptr, len, NULL, NULL); 6911 else 6912 tmp_len = MultiByteToWideChar(vcp->vc_cpfrom, 0, 6913 ptr, len, 0, 0); 6914 tmp = (short_u *)alloc(sizeof(short_u) * tmp_len); 6915 if (tmp == NULL) 6916 break; 6917 if (vcp->vc_cpfrom == 0) 6918 utf8_to_utf16(ptr, len, tmp, unconvlenp); 6919 else 6920 MultiByteToWideChar(vcp->vc_cpfrom, 0, ptr, len, tmp, tmp_len); 6921 6922 /* 2. ucs-2 -> codepage/UTF-8. */ 6923 if (vcp->vc_cpto == 0) 6924 retlen = utf16_to_utf8(tmp, tmp_len, NULL); 6925 else 6926 retlen = WideCharToMultiByte(vcp->vc_cpto, 0, 6927 tmp, tmp_len, 0, 0, 0, 0); 6928 retval = alloc(retlen + 1); 6929 if (retval != NULL) 6930 { 6931 if (vcp->vc_cpto == 0) 6932 utf16_to_utf8(tmp, tmp_len, retval); 6933 else 6934 WideCharToMultiByte(vcp->vc_cpto, 0, 6935 tmp, tmp_len, retval, retlen, 0, 0); 6936 retval[retlen] = NUL; 6937 if (lenp != NULL) 6938 *lenp = retlen; 6939 } 6940 vim_free(tmp); 6941 break; 6942 } 6943 # endif 6944 } 6945 6946 return retval; 6947 } 6948 #endif 6949