src/os_macosx.c

   1 /* vi:set ts=8 sts=4 sw=4:
   2  *
   3  * VIM - Vi IMproved            by Bram Moolenaar
   4  *
   5  * Do ":help uganda"  in Vim to read copying and usage conditions.
   6  * Do ":help credits" in Vim to see a list of people who contributed.
   7  * See README.txt for an overview of the Vim source code.
   8  */
   9
  10 /*
  11  * os_macosx.c -- Mac specific things for Mac OS/X.
  12  */
  13
  14 #ifdef MACOS_X_UNIX
  15 # ifdef HAVE_CONFIG_H       /* Using Makefile. */
  16 #  include "vim.h"
  17 # else
  18 #  include "os_unix.c"      /* Using Project Builder */
  19 # endif
  20 #else
  21     Error: MACOS 9 is no longer supported in Vim 7
  22 #endif
  23
  24 #ifdef _DEBUG
  25     void
  26 Trace(char* fmt, ...)
  27 {
  28     char buf[2048];
  29     va_list args;
  30
  31     va_start(args, fmt);
  32     /* vsnprintf(buf, sizeof(buf), fmt, args);*/
  33     fprintf(stderr, "%s", buf);
  34     va_end(args);
  35 }
  36 #endif
  37
  38 #ifdef MACOS_X_ICONVEMU
  39 /*
  40  * Libiconv emulation layer
  41  */
  42
  43 struct _iconv_t
  44 {
  45     TECObjectRef tec;
  46     TECObjectRef tecReverse;
  47     TECSnifferObjectRef sniff;
  48     TextEncoding from;
  49     TextEncoding to;
  50 };
  51 /* typedef struct _iconv_t *iconv_t; */
  52
  53
  54 static int last_errno = 0;
  55
  56 /*
  57  * Get TextEncoding from iconv's encoding name
  58  */
  59     static TextEncoding
  60 get_textencoding(const char* encodename)
  61 {
  62     static struct {
  63         const char* name;
  64         TextEncoding encode;
  65     } encodetable[] = {
  66         /* ISO-8859 encodings family */
  67         {"latin1", kTextEncodingISOLatin1},
  68         {"latin2", kTextEncodingISOLatin2},
  69         {"latin3", kTextEncodingISOLatin3},
  70         {"latin4", kTextEncodingISOLatin4},
  71         {"latin5", kTextEncodingISOLatin5},
  72         {"latin6", kTextEncodingISOLatin6},
  73         {"latin7", kTextEncodingISOLatin7},
  74         {"latin8", kTextEncodingISOLatin8},
  75         {"latin9", kTextEncodingISOLatin9},
  76         {"iso-8859-1", kTextEncodingISOLatin1},
  77         {"iso-8859-2", kTextEncodingISOLatin2},
  78         {"iso-8859-3", kTextEncodingISOLatin3},
  79         {"iso-8859-4", kTextEncodingISOLatin4},
  80         {"iso-8859-5", kTextEncodingISOLatinCyrillic},
  81         {"iso-8859-6", kTextEncodingISOLatinArabic},
  82         {"iso-8859-7", kTextEncodingISOLatinGreek},
  83         {"iso-8859-8", kTextEncodingISOLatinHebrew},
  84         {"iso-8859-9", kTextEncodingISOLatin5},
  85         {"iso-8859-10", kTextEncodingISOLatin6},
  86         {"iso-8859-15", kTextEncodingISOLatin9},
  87
  88         /* Unicode encodings. */
  89         /* TODO: Add other type of unicode */
  90         {"ucs-2", kTextEncodingMacUnicode},
  91
  92         /* Japanese encoding aliases */
  93         {"cp932", kTextEncodingShiftJIS},
  94         {"shift-jis", kTextEncodingShiftJIS},
  95         {"euc-jp", kTextEncodingEUC_JP},
  96         {"iso-2022-jp", kTextEncodingISO_2022_JP},
  97         {"iso-2022-jp-1", kTextEncodingISO_2022_JP_1},
  98         {"iso-2022-jp-2", kTextEncodingISO_2022_JP_2},
  99         {"iso-2022-jp-3", kTextEncodingISO_2022_JP_3},
 100
 101         /* Other aliases. These aliases in this block are just guessed. */
 102         /* TODO: Must be verified. */
 103         {"gb2312", kTextEncodingGB_2312_80},
 104         {"cp936", kTextEncodingMacChineseSimp},
 105         {"euc-cn", kTextEncodingEUC_CN},
 106         {"cp950", kTextEncodingMacChineseTrad},
 107         {"euc-tw", kTextEncodingEUC_TW},
 108         {"cp949", kTextEncodingMacKorean},
 109         {"euc-kr", kTextEncodingEUC_KR},
 110
 111         /*
 112          * All encodings supported by Macintosh.  You can find these values
 113          * in a file:
 114          *  /System/Library/Frameworks/CoreServices.framework/Versions/A/
 115          *    Frameworks/CarbonCore.framework/Versions/A/Headers/TextCommon.h
 116          */
 117         {"MacRoman", kTextEncodingMacRoman},
 118         {"MacJapanese", kTextEncodingMacJapanese},
 119         {"MacChineseTrad", kTextEncodingMacChineseTrad},
 120         {"MacKorean", kTextEncodingMacKorean},
 121         {"MacArabic", kTextEncodingMacArabic},
 122         {"MacHebrew", kTextEncodingMacHebrew},
 123         {"MacGreek", kTextEncodingMacGreek},
 124         {"MacCyrillic", kTextEncodingMacCyrillic},
 125         {"MacDevanagari", kTextEncodingMacDevanagari},
 126         {"MacGurmukhi", kTextEncodingMacGurmukhi},
 127         {"MacGujarati", kTextEncodingMacGujarati},
 128         {"MacOriya", kTextEncodingMacOriya},
 129         {"MacBengali", kTextEncodingMacBengali},
 130         {"MacTamil", kTextEncodingMacTamil},
 131         {"MacTelugu", kTextEncodingMacTelugu},
 132         {"MacKannada", kTextEncodingMacKannada},
 133         {"MacMalayalam", kTextEncodingMacMalayalam},
 134         {"MacSinhalese", kTextEncodingMacSinhalese},
 135         {"MacBurmese", kTextEncodingMacBurmese},
 136         {"MacKhmer", kTextEncodingMacKhmer},
 137         {"MacThai", kTextEncodingMacThai},
 138         {"MacLaotian", kTextEncodingMacLaotian},
 139         {"MacGeorgian", kTextEncodingMacGeorgian},
 140         {"MacArmenian", kTextEncodingMacArmenian},
 141         {"MacChineseSimp", kTextEncodingMacChineseSimp},
 142         {"MacTibetan", kTextEncodingMacTibetan},
 143         {"MacMongolian", kTextEncodingMacMongolian},
 144         {"MacEthiopic", kTextEncodingMacEthiopic},
 145         {"MacCentralEurRoman", kTextEncodingMacCentralEurRoman},
 146         {"MacVietnamese", kTextEncodingMacVietnamese},
 147         {"MacExtArabic", kTextEncodingMacExtArabic},
 148         {"MacSymbol", kTextEncodingMacSymbol},
 149         {"MacDingbats", kTextEncodingMacDingbats},
 150         {"MacTurkish", kTextEncodingMacTurkish},
 151         {"MacCroatian", kTextEncodingMacCroatian},
 152         {"MacIcelandic", kTextEncodingMacIcelandic},
 153         {"MacRomanian", kTextEncodingMacRomanian},
 154         {"MacCeltic", kTextEncodingMacCeltic},
 155         {"MacGaelic", kTextEncodingMacGaelic},
 156         {"MacKeyboardGlyphs", kTextEncodingMacKeyboardGlyphs},
 157         {"MacTradChinese", kTextEncodingMacTradChinese},
 158         {"MacRSymbol", kTextEncodingMacRSymbol},
 159         {"MacSimpChinese", kTextEncodingMacSimpChinese},
 160         {"MacGeez", kTextEncodingMacGeez},
 161         {"MacEastEurRoman", kTextEncodingMacEastEurRoman},
 162         {"MacUninterp", kTextEncodingMacUninterp},
 163         {"MacUnicode", kTextEncodingMacUnicode},
 164         {"MacFarsi", kTextEncodingMacFarsi},
 165         {"MacUkrainian", kTextEncodingMacUkrainian},
 166         {"MacInuit", kTextEncodingMacInuit},
 167         {"MacVT100", kTextEncodingMacVT100},
 168         {"MacHFS", kTextEncodingMacHFS},
 169         {"UnicodeDefault", kTextEncodingUnicodeDefault},
 170         {"UnicodeV1_1", kTextEncodingUnicodeV1_1},
 171         {"ISO10646_1993", kTextEncodingISO10646_1993},
 172         {"UnicodeV2_0", kTextEncodingUnicodeV2_0},
 173         {"UnicodeV2_1", kTextEncodingUnicodeV2_1},
 174         {"UnicodeV3_0", kTextEncodingUnicodeV3_0},
 175         {"UnicodeV3_1", kTextEncodingUnicodeV3_1},
 176         {"UnicodeV3_2", kTextEncodingUnicodeV3_2},
 177         {"ISOLatin1", kTextEncodingISOLatin1},
 178         {"ISOLatin2", kTextEncodingISOLatin2},
 179         {"ISOLatin3", kTextEncodingISOLatin3},
 180         {"ISOLatin4", kTextEncodingISOLatin4},
 181         {"ISOLatinCyrillic", kTextEncodingISOLatinCyrillic},
 182         {"ISOLatinArabic", kTextEncodingISOLatinArabic},
 183         {"ISOLatinGreek", kTextEncodingISOLatinGreek},
 184         {"ISOLatinHebrew", kTextEncodingISOLatinHebrew},
 185         {"ISOLatin5", kTextEncodingISOLatin5},
 186         {"ISOLatin6", kTextEncodingISOLatin6},
 187         {"ISOLatin7", kTextEncodingISOLatin7},
 188         {"ISOLatin8", kTextEncodingISOLatin8},
 189         {"ISOLatin9", kTextEncodingISOLatin9},
 190         {"DOSLatinUS", kTextEncodingDOSLatinUS},
 191         {"DOSGreek", kTextEncodingDOSGreek},
 192         {"DOSBalticRim", kTextEncodingDOSBalticRim},
 193         {"DOSLatin1", kTextEncodingDOSLatin1},
 194         {"DOSGreek1", kTextEncodingDOSGreek1},
 195         {"DOSLatin2", kTextEncodingDOSLatin2},
 196         {"DOSCyrillic", kTextEncodingDOSCyrillic},
 197         {"DOSTurkish", kTextEncodingDOSTurkish},
 198         {"DOSPortuguese", kTextEncodingDOSPortuguese},
 199         {"DOSIcelandic", kTextEncodingDOSIcelandic},
 200         {"DOSHebrew", kTextEncodingDOSHebrew},
 201         {"DOSCanadianFrench", kTextEncodingDOSCanadianFrench},
 202         {"DOSArabic", kTextEncodingDOSArabic},
 203         {"DOSNordic", kTextEncodingDOSNordic},
 204         {"DOSRussian", kTextEncodingDOSRussian},
 205         {"DOSGreek2", kTextEncodingDOSGreek2},
 206         {"DOSThai", kTextEncodingDOSThai},
 207         {"DOSJapanese", kTextEncodingDOSJapanese},
 208         {"DOSChineseSimplif", kTextEncodingDOSChineseSimplif},
 209         {"DOSKorean", kTextEncodingDOSKorean},
 210         {"DOSChineseTrad", kTextEncodingDOSChineseTrad},
 211         {"WindowsLatin1", kTextEncodingWindowsLatin1},
 212         {"WindowsANSI", kTextEncodingWindowsANSI},
 213         {"WindowsLatin2", kTextEncodingWindowsLatin2},
 214         {"WindowsCyrillic", kTextEncodingWindowsCyrillic},
 215         {"WindowsGreek", kTextEncodingWindowsGreek},
 216         {"WindowsLatin5", kTextEncodingWindowsLatin5},
 217         {"WindowsHebrew", kTextEncodingWindowsHebrew},
 218         {"WindowsArabic", kTextEncodingWindowsArabic},
 219         {"WindowsBalticRim", kTextEncodingWindowsBalticRim},
 220         {"WindowsVietnamese", kTextEncodingWindowsVietnamese},
 221         {"WindowsKoreanJohab", kTextEncodingWindowsKoreanJohab},
 222         {"US_ASCII", kTextEncodingUS_ASCII},
 223         {"JIS_X0201_76", kTextEncodingJIS_X0201_76},
 224         {"JIS_X0208_83", kTextEncodingJIS_X0208_83},
 225         {"JIS_X0208_90", kTextEncodingJIS_X0208_90},
 226         {"JIS_X0212_90", kTextEncodingJIS_X0212_90},
 227         {"JIS_C6226_78", kTextEncodingJIS_C6226_78},
 228         {"ShiftJIS_X0213_00", kTextEncodingShiftJIS_X0213_00},
 229         {"GB_2312_80", kTextEncodingGB_2312_80},
 230         {"GBK_95", kTextEncodingGBK_95},
 231         {"GB_18030_2000", kTextEncodingGB_18030_2000},
 232         {"KSC_5601_87", kTextEncodingKSC_5601_87},
 233         {"KSC_5601_92_Johab", kTextEncodingKSC_5601_92_Johab},
 234         {"CNS_11643_92_P1", kTextEncodingCNS_11643_92_P1},
 235         {"CNS_11643_92_P2", kTextEncodingCNS_11643_92_P2},
 236         {"CNS_11643_92_P3", kTextEncodingCNS_11643_92_P3},
 237         {"ISO_2022_JP", kTextEncodingISO_2022_JP},
 238         {"ISO_2022_JP_2", kTextEncodingISO_2022_JP_2},
 239         {"ISO_2022_JP_1", kTextEncodingISO_2022_JP_1},
 240         {"ISO_2022_JP_3", kTextEncodingISO_2022_JP_3},
 241         {"ISO_2022_CN", kTextEncodingISO_2022_CN},
 242         {"ISO_2022_CN_EXT", kTextEncodingISO_2022_CN_EXT},
 243         {"ISO_2022_KR", kTextEncodingISO_2022_KR},
 244         {"EUC_JP", kTextEncodingEUC_JP},
 245         {"EUC_CN", kTextEncodingEUC_CN},
 246         {"EUC_TW", kTextEncodingEUC_TW},
 247         {"EUC_KR", kTextEncodingEUC_KR},
 248         {"ShiftJIS", kTextEncodingShiftJIS},
 249         {"KOI8_R", kTextEncodingKOI8_R},
 250         {"Big5", kTextEncodingBig5},
 251         {"MacRomanLatin1", kTextEncodingMacRomanLatin1},
 252         {"HZ_GB_2312", kTextEncodingHZ_GB_2312},
 253         {"Big5_HKSCS_1999", kTextEncodingBig5_HKSCS_1999},
 254         {"NextStepLatin", kTextEncodingNextStepLatin},
 255         {"EBCDIC_US", kTextEncodingEBCDIC_US},
 256         {"EBCDIC_CP037", kTextEncodingEBCDIC_CP037},
 257         {"MultiRun", kTextEncodingMultiRun},
 258
 259         /* Terminator */
 260         {NULL, -1},
 261     };
 262     int i;
 263
 264     i = 0;
 265     for (i = 0; encodetable[i].name != NULL; ++i)
 266     {
 267         if (STRICMP(encodename, encodetable[i].name) == 0)
 268             break;
 269     }
 270     return encodetable[i].encode;
 271 }
 272
 273 /*
 274  * iconv interfaces
 275  */
 276
 277     iconv_t
 278 iconv_open(const char* tocode, const char* fromcode)
 279 {
 280     TextEncoding toEnc, fromEnc;
 281     iconv_t cd = NULL;
 282     OSStatus st;
 283
 284     /* Verify to/from encoding name */
 285     toEnc = get_textencoding(tocode);
 286     fromEnc = get_textencoding(fromcode);
 287     if (toEnc < 0 || fromEnc < 0)
 288         goto ICONV_OPEN_ERR;
 289
 290     /* Allocate memory to object */
 291     cd = (iconv_t)alloc(sizeof(struct _iconv_t));
 292     if (!cd)
 293         goto ICONV_OPEN_ERR;
 294     memset(cd, 0, sizeof(struct _iconv_t));
 295
 296     /* Create converter */
 297     if (fromEnc != toEnc)
 298     {
 299         TRACE("*** fromEnc=%d toEnc=%d\n", (int)fromEnc, (int)toEnc);
 300         st = TECCreateConverter(&cd->tec, fromEnc, toEnc);
 301         if (st != 0)
 302         {
 303             TRACE("*** TECCreateConverter()=%d\n", (int)st);
 304             goto ICONV_OPEN_ERR;
 305         }
 306         /* Create reverse converter */
 307         st = TECCreateConverter(&cd->tecReverse, toEnc, fromEnc);
 308         if (st != 0)
 309         {
 310             TRACE("*** TECCreateConverter()=%d (reverse)\n", (int)st);
 311             goto ICONV_OPEN_ERR;
 312         }
 313         /* Create Sniffer */
 314         st = TECCreateSniffer(&cd->sniff, &fromEnc, 1);
 315         if (st != 0)
 316         {
 317             TRACE("*** TECCreateSniffer()=%d\n", (int)st);
 318             goto ICONV_OPEN_ERR;
 319         }
 320     }
 321
 322     cd->from = fromEnc;
 323     cd->to = toEnc;
 324     last_errno = 0;
 325     return cd;
 326
 327 ICONV_OPEN_ERR:
 328     if (cd)
 329         iconv_close(cd);
 330     last_errno = EINVAL;
 331     return (iconv_t)-1;
 332 }
 333
 334 /*
 335  * Used when there are same value in 'from encoding' and 'to encoding'.
 336  * TEC doesn't support conversion between same encodings, and
 337  * TECCreateConverter() failed.
 338  */
 339     static size_t
 340 null_conv(iconv_t cd, const char **inbuf, size_t *inbytesleft,
 341         char **outbuf, size_t *outbytesleft)
 342 {
 343     const char* buf_in = inbuf && *inbuf ? *inbuf : NULL;
 344     char* buf_out = outbuf && *outbuf ? *outbuf : NULL;
 345
 346     if (buf_in)
 347     {
 348         int in_len = inbytesleft ? *inbytesleft : 0;
 349         int out_len = outbytesleft ? *outbytesleft : 0;
 350
 351         if (!buf_out || out_len <= 0)
 352         {
 353             last_errno = E2BIG;
 354             return -1;
 355         }
 356         else if (in_len > 0)
 357         {
 358             int len = in_len < out_len ? in_len : out_len;
 359
 360             memcpy (buf_out, buf_in, len);
 361             *inbuf += len;
 362             *outbuf += len;
 363             *inbytesleft -= len;
 364             *outbytesleft -= len;
 365             if (*outbytesleft <= 0)
 366             {
 367                 last_errno = E2BIG;
 368                 return -1;
 369             }
 370         }
 371     }
 372     last_errno = 0;
 373     return 0;
 374 }
 375
 376     size_t
 377 iconv(iconv_t cd, const char **inbuf, size_t *inbytesleft,
 378         char **outbuf, size_t *outbytesleft)
 379 {
 380     ConstTextPtr    buf_in;
 381     TextPtr         buf_out;
 382     ByteCount       out_len, out_true;
 383     ByteCount       in_len, in_true;
 384     OSStatus        st;
 385
 386     if (!cd)
 387     {
 388         last_errno = ENOENT; /* TODO: Another error code should be set */
 389         return -1;
 390     }
 391     if (cd->from == cd->to)
 392         return null_conv(cd, inbuf, inbytesleft, outbuf, outbytesleft) ;
 393
 394     buf_in = (TextPtr) inbuf ;
 395     buf_out = (TextPtr) outbuf ;
 396     out_len = out_true = -1;
 397     in_len = in_true = -1;
 398
 399     if (buf_in && buf_out)
 400     {
 401         ItemCount error, feature;
 402
 403         /* Normal convert mode */
 404         if (!inbytesleft || !outbytesleft)
 405         {
 406             last_errno = EFAULT;
 407             return -1;
 408         }
 409         in_len = *inbytesleft;
 410         out_len = *outbytesleft;
 411
 412         /* Check stream is form in expected encoding or not */
 413         st = TECSniffTextEncoding(cd->sniff, (TextPtr)buf_in, in_len,
 414                 &cd->from, 1, &error, 1, &feature, 1);
 415         TRACE("TECSniffTextEncoding()=%d error=%d feature=%d\n",
 416                 (int)st, (int)error, (int)feature);
 417         if ((error != 0 || feature == 0)
 418                 && !(error == 0xffffffff && feature == 0xffffffff))
 419             /* Not expected encoding */
 420             st = kTECUnmappableElementErr;
 421         else
 422         {
 423             /* Do convert */
 424             st = TECConvertText(cd->tec,
 425                     buf_in, in_len, &in_true,
 426                     buf_out, out_len, &out_true);
 427             /* Verify converted text.  Compare original text with reverse
 428              * converted text.  If not match, there is some problem on
 429              * converting. */
 430             if (st == 0 && in_true > 0)
 431             {
 432                 ByteCount rev_in, rev_out;
 433                 TextPtr buf_rev = (TextPtr)alloc(in_true);
 434
 435                 if (buf_rev)
 436                 {
 437                     st = TECConvertText(cd->tecReverse,
 438                             buf_out, out_true, &rev_in,
 439                             buf_rev, in_true, &rev_out);
 440                     if (st != 0 || rev_in != out_true || rev_out != in_true
 441                             || memcmp(buf_rev, buf_in, rev_out) != 0)
 442                     {
 443 #ifdef ICONVOSX_DEBUG
 444                         fprintf(stderr, "  reverse conversion failed.\n");
 445 #endif
 446                         st = kTECUnmappableElementErr;
 447                     }
 448                     vim_free(buf_rev);
 449                 }
 450                 else
 451                     st = kTECUnmappableElementErr;
 452             }
 453         }
 454     }
 455     else if (!buf_in && buf_out)
 456     {
 457         /* Flush all buffered strings to buffer, and reset status */
 458         if (!outbytesleft)
 459         {
 460             last_errno = EFAULT;
 461             return -1;
 462         }
 463         out_len = *outbytesleft;
 464         st = TECFlushText(cd->tec,
 465                 buf_out, out_len, &out_true);
 466     }
 467     else if (!buf_in && !buf_out)
 468     {
 469         /* Reset cd's status and cancel buffered strings */
 470         unsigned char tmp_out[256];
 471
 472         buf_out = tmp_out;
 473         out_len = sizeof(tmp_out);
 474         st = TECFlushText(cd->tec,
 475                 buf_out, out_len, &out_true);
 476     }
 477     else
 478     {
 479         last_errno = EFAULT;
 480         return -1;
 481     }
 482     TRACE("st=%d, buf_in=%p, in_len=%d, in_true=%d\n"
 483             "  buf_out=%p, out_len=%d, out_true=%d\n", (int)st,
 484             buf_in, (int)in_len, (int)in_true,
 485             buf_out, (int)out_len, (int)out_true);
 486
 487     switch (st)
 488     {
 489         case 0:
 490             /* No error */
 491             if (inbytesleft)
 492                 *inbytesleft -= in_true;
 493             if (outbytesleft)
 494                 *outbytesleft -= out_true;
 495             if (inbuf && *inbuf)
 496                 *inbuf += in_true;
 497             if (outbuf && *outbuf)
 498                 *outbuf += out_true;
 499             last_errno = 0;
 500             return 0; /* No error */
 501         case kTECUnmappableElementErr:
 502             last_errno = EILSEQ;
 503         case kTECIncompleteElementErr:
 504             last_errno = EINVAL;
 505         case kTECOutputBufferFullStatus:
 506             last_errno = E2BIG;
 507             return -1;
 508         default:
 509             TRACE("iconv(%p, %p, %p, %p, %p) failed. (%d)\n",
 510                     cd, inbuf, inbytesleft, outbuf, outbytesleft, (int)st);
 511             last_errno = EFAULT;
 512             return -1;
 513     }
 514 }
 515
 516     int
 517 iconv_close(iconv_t cd)
 518 {
 519     if (cd)
 520     {
 521         /* Free all elements of iconv_t */
 522         if (cd->tec)
 523             TECDisposeConverter(cd->tec);
 524         if (cd->tecReverse)
 525             TECDisposeConverter(cd->tecReverse);
 526         if (cd->sniff)
 527             TECDisposeSniffer(cd->sniff);
 528         vim_free(cd);
 529         last_errno = 0;
 530         return 0;
 531     }
 532     else
 533     {
 534         last_errno = EINVAL;
 535         return -1;
 536     }
 537 }
 538
 539     int *
 540 iconv_errno()
 541 {
 542     return &last_errno;
 543 }
 544 #endif /* MACOS_X_ICONVEMU */
 545
 546 #ifdef USE_MCH_GETTEXT
 547
 548 #define GETTEXT_BUFNUM          64
 549 #define GETTEXT_BUFSIZE         256
 550
 551     char *
 552 mch_gettext(const char *msgid)
 553 {
 554     static char         buf[GETTEXT_BUFNUM][GETTEXT_BUFSIZE];
 555     static int          bufnum = 0;
 556     const char          *msg = NULL;
 557     CFStringRef         strkey = NULL, strmsg = NULL;
 558     CFStringEncoding    enc;
 559
 560     if (!msgid)
 561         goto MCH_GETTEXT_FINISH;
 562     enc = CFStringGetSystemEncoding();
 563     TRACE("mch_gettext(%s)\n", msgid);
 564
 565     strkey = CFStringCreateWithCString(NULL, msgid, enc);
 566     if (!strkey)
 567     {
 568         TRACE("  Can't create a CFString for msgid.\n");
 569         goto MCH_GETTEXT_FINISH;
 570     }
 571
 572     strmsg = CFCopyLocalizedString(strkey, NULL);
 573     if (!strmsg)
 574     {
 575         TRACE("  No localized strings for msgid.\n");
 576         goto MCH_GETTEXT_FINISH;
 577     }
 578
 579     msg = CFStringGetCStringPtr(strmsg, enc);
 580     if (!msg)
 581     {
 582         /* This is as backup when CFStringGetCStringPtr was failed */
 583         CFStringGetCString(strmsg, buf[bufnum], GETTEXT_BUFSIZE, enc);
 584         msg = buf[bufnum];
 585         if (++bufnum >= GETTEXT_BUFNUM)
 586             bufnum = 0;
 587     }
 588     TRACE("  Localized to: %s\n", msg);
 589
 590 MCH_GETTEXT_FINISH:
 591     if (strkey)
 592         CFRelease(strkey);
 593     if (strmsg)
 594         CFRelease(strmsg);
 595     return (char *)(msg ? msg : msgid);
 596 }
 597
 598     char *
 599 mch_bindtextdomain(const char *domain, const char *dirname)
 600 {
 601     TRACE("mch_bindtextdomain(%s, %s)\n", domain, dirname);
 602     return (char*)dirname;
 603 }
 604
 605     char *
 606 mch_textdomain(const char *domain)
 607 {
 608     TRACE("mch_textdomain(%s)\n", domain);
 609     return (char*)domain;
 610 }
 611 #endif