dll/3rdparty/libxslt/xsltlocale.c

   1 /*
   2  * xsltlocale.c: locale handling
   3  *
   4  * Reference:
   5  * RFC 3066: Tags for the Identification of Languages
   6  * http://www.ietf.org/rfc/rfc3066.txt
   7  * ISO 639-1, ISO 3166-1
   8  *
   9  * Author: Nick Wellnhofer
  10  * winapi port: Roumen Petrov
  11  */
  12
  13 #define IN_LIBXSLT
  14 #include "libxslt.h"
  15
  16 #include <string.h>
  17 #include <libxml/xmlmemory.h>
  18
  19 #include "xsltlocale.h"
  20 #include "xsltutils.h"
  21
  22 #if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 2
  23 #define newlocale __newlocale
  24 #define freelocale __freelocale
  25 #define strxfrm_l __strxfrm_l
  26 #define LC_COLLATE_MASK (1 << LC_COLLATE)
  27 #endif
  28
  29 #define ISALPHA(c) ((c & 0xc0) == 0x40 && (unsigned)((c & 0x1f) - 1) < 26)
  30 #define TOUPPER(c) (c & ~0x20)
  31 #define TOLOWER(c) (c | 0x20)
  32
  33 /*without terminating null character*/
  34 #define XSLTMAX_ISO639LANGLEN           8
  35 #define XSLTMAX_ISO3166CNTRYLEN         8
  36                                         /* <lang>-<cntry> */
  37 #define XSLTMAX_LANGTAGLEN              (XSLTMAX_ISO639LANGLEN+1+XSLTMAX_ISO3166CNTRYLEN)
  38
  39 static const xmlChar* xsltDefaultRegion(const xmlChar *localeName);
  40
  41 #ifdef XSLT_LOCALE_WINAPI
  42 xmlRMutexPtr xsltLocaleMutex = NULL;
  43
  44 struct xsltRFC1766Info_s {
  45       /*note typedef unsigned char xmlChar !*/
  46     xmlChar    tag[XSLTMAX_LANGTAGLEN+1];
  47       /*note typedef LCID xsltLocale !*/
  48     xsltLocale lcid;
  49 };
  50 typedef struct xsltRFC1766Info_s xsltRFC1766Info;
  51
  52 static int xsltLocaleListSize = 0;
  53 static xsltRFC1766Info *xsltLocaleList = NULL;
  54
  55
  56 static xsltLocale
  57 xslt_locale_WINAPI(const xmlChar *languageTag) {
  58     int k;
  59     xsltRFC1766Info *p = xsltLocaleList;
  60
  61     for (k=0; k<xsltLocaleListSize; k++, p++)
  62         if (xmlStrcmp(p->tag, languageTag) == 0) return p->lcid;
  63     return((xsltLocale)0);
  64 }
  65
  66 static void xsltEnumSupportedLocales(void);
  67 #endif
  68
  69 /**
  70  * xsltNewLocale:
  71  * @languageTag: RFC 3066 language tag
  72  *
  73  * Creates a new locale of an opaque system dependent type based on the
  74  * language tag.
  75  *
  76  * Returns the locale or NULL on error or if no matching locale was found
  77  */
  78 xsltLocale
  79 xsltNewLocale(const xmlChar *languageTag) {
  80 #ifdef XSLT_LOCALE_XLOCALE
  81     xsltLocale locale;
  82     char localeName[XSLTMAX_LANGTAGLEN+6]; /* 6 chars for ".utf8\0" */
  83     const xmlChar *p = languageTag;
  84     const char *region = NULL;
  85     char *q = localeName;
  86     int i, llen;
  87
  88     /* Convert something like "pt-br" to "pt_BR.utf8" */
  89
  90     if (languageTag == NULL)
  91         return(NULL);
  92
  93     for (i=0; i<XSLTMAX_ISO639LANGLEN && ISALPHA(*p); ++i)
  94         *q++ = TOLOWER(*p++);
  95
  96     if (i == 0)
  97         return(NULL);
  98
  99     llen = i;
 100     *q++ = '_';
 101
 102     if (*p) {
 103         if (*p++ != '-')
 104             return(NULL);
 105
 106         for (i=0; i<XSLTMAX_ISO3166CNTRYLEN && ISALPHA(*p); ++i)
 107             *q++ = TOUPPER(*p++);
 108
 109         if (i == 0 || *p)
 110             return(NULL);
 111
 112         memcpy(q, ".utf8", 6);
 113         locale = newlocale(LC_COLLATE_MASK, localeName, NULL);
 114         if (locale != NULL)
 115             return(locale);
 116
 117         /* Continue without using country code */
 118
 119         q = localeName + llen + 1;
 120     }
 121
 122     /* Try locale without territory, e.g. for Esperanto (eo) */
 123
 124     memcpy(q, ".utf8", 6);
 125     locale = newlocale(LC_COLLATE_MASK, localeName, NULL);
 126     if (locale != NULL)
 127         return(locale);
 128
 129     /* Try to find most common country for language */
 130
 131     if (llen != 2)
 132         return(NULL);
 133
 134     region = (char *)xsltDefaultRegion((xmlChar *)localeName);
 135     if (region == NULL)
 136         return(NULL);
 137
 138     q = localeName + llen + 1;
 139     *q++ = region[0];
 140     *q++ = region[1];
 141     memcpy(q, ".utf8", 6);
 142     locale = newlocale(LC_COLLATE_MASK, localeName, NULL);
 143
 144     return(locale);
 145 #endif
 146
 147 #ifdef XSLT_LOCALE_WINAPI
 148 {
 149     xsltLocale    locale = (xsltLocale)0;
 150     xmlChar       localeName[XSLTMAX_LANGTAGLEN+1];
 151     xmlChar       *q = localeName;
 152     const xmlChar *p = languageTag;
 153     int           i, llen;
 154     const xmlChar *region = NULL;
 155
 156     if (languageTag == NULL) goto end;
 157
 158     xsltEnumSupportedLocales();
 159
 160     for (i=0; i<XSLTMAX_ISO639LANGLEN && ISALPHA(*p); ++i)
 161         *q++ = TOLOWER(*p++);
 162     if (i == 0) goto end;
 163
 164     llen = i;
 165     *q++ = '-';
 166     if (*p) { /*if country tag is given*/
 167         if (*p++ != '-') goto end;
 168
 169         for (i=0; i<XSLTMAX_ISO3166CNTRYLEN && ISALPHA(*p); ++i)
 170             *q++ = TOUPPER(*p++);
 171         if (i == 0 || *p) goto end;
 172
 173         *q = '\0';
 174         locale = xslt_locale_WINAPI(localeName);
 175         if (locale != (xsltLocale)0) goto end;
 176     }
 177     /* Try to find most common country for language */
 178     region = xsltDefaultRegion(localeName);
 179     if (region == NULL) goto end;
 180
 181     strcpy(localeName + llen + 1, region);
 182     locale = xslt_locale_WINAPI(localeName);
 183 end:
 184     return(locale);
 185 }
 186 #endif
 187
 188 #ifdef XSLT_LOCALE_NONE
 189     return(NULL);
 190 #endif
 191 }
 192
 193 static const xmlChar*
 194 xsltDefaultRegion(const xmlChar *localeName) {
 195     xmlChar c;
 196     /* region should be xmlChar, but gcc warns on all string assignments */
 197     const char *region = NULL;
 198
 199     c = localeName[1];
 200     /* This is based on the locales from glibc 2.3.3 */
 201
 202     switch (localeName[0]) {
 203         case 'a':
 204             if (c == 'a' || c == 'm') region = "ET";
 205             else if (c == 'f') region = "ZA";
 206             else if (c == 'n') region = "ES";
 207             else if (c == 'r') region = "AE";
 208             else if (c == 'z') region = "AZ";
 209             break;
 210         case 'b':
 211             if (c == 'e') region = "BY";
 212             else if (c == 'g') region = "BG";
 213             else if (c == 'n') region = "BD";
 214             else if (c == 'r') region = "FR";
 215             else if (c == 's') region = "BA";
 216             break;
 217         case 'c':
 218             if (c == 'a') region = "ES";
 219             else if (c == 's') region = "CZ";
 220             else if (c == 'y') region = "GB";
 221             break;
 222         case 'd':
 223             if (c == 'a') region = "DK";
 224             else if (c == 'e') region = "DE";
 225             break;
 226         case 'e':
 227             if (c == 'l') region = "GR";
 228             else if (c == 'n' || c == 'o') region = "US";
 229             else if (c == 's' || c == 'u') region = "ES";
 230             else if (c == 't') region = "EE";
 231             break;
 232         case 'f':
 233             if (c == 'a') region = "IR";
 234             else if (c == 'i') region = "FI";
 235             else if (c == 'o') region = "FO";
 236             else if (c == 'r') region = "FR";
 237             break;
 238         case 'g':
 239             if (c == 'a') region = "IE";
 240             else if (c == 'l') region = "ES";
 241             else if (c == 'v') region = "GB";
 242             break;
 243         case 'h':
 244             if (c == 'e') region = "IL";
 245             else if (c == 'i') region = "IN";
 246             else if (c == 'r') region = "HT";
 247             else if (c == 'u') region = "HU";
 248             break;
 249         case 'i':
 250             if (c == 'd') region = "ID";
 251             else if (c == 's') region = "IS";
 252             else if (c == 't') region = "IT";
 253             else if (c == 'w') region = "IL";
 254             break;
 255         case 'j':
 256             if (c == 'a') region = "JP";
 257             break;
 258         case 'k':
 259             if (c == 'l') region = "GL";
 260             else if (c == 'o') region = "KR";
 261             else if (c == 'w') region = "GB";
 262             break;
 263         case 'l':
 264             if (c == 't') region = "LT";
 265             else if (c == 'v') region = "LV";
 266             break;
 267         case 'm':
 268             if (c == 'k') region = "MK";
 269             else if (c == 'l' || c == 'r') region = "IN";
 270             else if (c == 'n') region = "MN";
 271             else if (c == 's') region = "MY";
 272             else if (c == 't') region = "MT";
 273             break;
 274         case 'n':
 275             if (c == 'b' || c == 'n' || c == 'o') region = "NO";
 276             else if (c == 'e') region = "NP";
 277             else if (c == 'l') region = "NL";
 278             break;
 279         case 'o':
 280             if (c == 'm') region = "ET";
 281             break;
 282         case 'p':
 283             if (c == 'a') region = "IN";
 284             else if (c == 'l') region = "PL";
 285             else if (c == 't') region = "PT";
 286             break;
 287         case 'r':
 288             if (c == 'o') region = "RO";
 289             else if (c == 'u') region = "RU";
 290             break;
 291         case 's':
 292             switch (c) {
 293                 case 'e': region = "NO"; break;
 294                 case 'h': region = "YU"; break;
 295                 case 'k': region = "SK"; break;
 296                 case 'l': region = "SI"; break;
 297                 case 'o': region = "ET"; break;
 298                 case 'q': region = "AL"; break;
 299                 case 't': region = "ZA"; break;
 300                 case 'v': region = "SE"; break;
 301             }
 302             break;
 303         case 't':
 304             if (c == 'a' || c == 'e') region = "IN";
 305             else if (c == 'h') region = "TH";
 306             else if (c == 'i') region = "ER";
 307             else if (c == 'r') region = "TR";
 308             else if (c == 't') region = "RU";
 309             break;
 310         case 'u':
 311             if (c == 'k') region = "UA";
 312             else if (c == 'r') region = "PK";
 313             break;
 314         case 'v':
 315             if (c == 'i') region = "VN";
 316             break;
 317         case 'w':
 318             if (c == 'a') region = "BE";
 319             break;
 320         case 'x':
 321             if (c == 'h') region = "ZA";
 322             break;
 323         case 'z':
 324             if (c == 'h') region = "CN";
 325             else if (c == 'u') region = "ZA";
 326             break;
 327     }
 328     return((xmlChar *)region);
 329 }
 330
 331 /**
 332  * xsltFreeLocale:
 333  * @locale: the locale to free
 334  *
 335  * Frees a locale created with xsltNewLocale
 336  */
 337 void
 338 xsltFreeLocale(xsltLocale locale) {
 339 #ifdef XSLT_LOCALE_XLOCALE
 340     freelocale(locale);
 341 #endif
 342 }
 343
 344 /**
 345  * xsltStrxfrm:
 346  * @locale: locale created with xsltNewLocale
 347  * @string: UTF-8 string to transform
 348  *
 349  * Transforms a string according to locale. The transformed string must then be
 350  * compared with xsltLocaleStrcmp and freed with xmlFree.
 351  *
 352  * Returns the transformed string or NULL on error
 353  */
 354 xsltLocaleChar *
 355 xsltStrxfrm(xsltLocale locale, const xmlChar *string)
 356 {
 357 #ifdef XSLT_LOCALE_NONE
 358     return(NULL);
 359 #else
 360     size_t xstrlen, r;
 361     xsltLocaleChar *xstr;
 362
 363 #ifdef XSLT_LOCALE_XLOCALE
 364     xstrlen = strxfrm_l(NULL, (const char *)string, 0, locale) + 1;
 365     xstr = (xsltLocaleChar *) xmlMalloc(xstrlen);
 366     if (xstr == NULL) {
 367         xsltTransformError(NULL, NULL, NULL,
 368             "xsltStrxfrm : out of memory error\n");
 369         return(NULL);
 370     }
 371
 372     r = strxfrm_l((char *)xstr, (const char *)string, xstrlen, locale);
 373 #endif
 374
 375 #ifdef XSLT_LOCALE_WINAPI
 376     xstrlen = MultiByteToWideChar(CP_UTF8, 0, string, -1, NULL, 0);
 377     if (xstrlen == 0) {
 378         xsltTransformError(NULL, NULL, NULL, "xsltStrxfrm : MultiByteToWideChar check failed\n");
 379         return(NULL);
 380     }
 381     xstr = (xsltLocaleChar*) xmlMalloc(xstrlen * sizeof(xsltLocaleChar));
 382     if (xstr == NULL) {
 383         xsltTransformError(NULL, NULL, NULL, "xsltStrxfrm : out of memory\n");
 384         return(NULL);
 385     }
 386     r = MultiByteToWideChar(CP_UTF8, 0, string, -1, xstr, xstrlen);
 387     if (r == 0) {
 388         xsltTransformError(NULL, NULL, NULL, "xsltStrxfrm : MultiByteToWideChar failed\n");
 389         xmlFree(xstr);
 390         return(NULL);
 391     }
 392     return(xstr);
 393 #endif /* XSLT_LOCALE_WINAPI */
 394
 395     if (r >= xstrlen) {
 396         xsltTransformError(NULL, NULL, NULL, "xsltStrxfrm : strxfrm failed\n");
 397         xmlFree(xstr);
 398         return(NULL);
 399     }
 400
 401     return(xstr);
 402 #endif /* XSLT_LOCALE_NONE */
 403 }
 404
 405 /**
 406  * xsltLocaleStrcmp:
 407  * @locale: a locale identifier
 408  * @str1: a string transformed with xsltStrxfrm
 409  * @str2: a string transformed with xsltStrxfrm
 410  *
 411  * Compares two strings transformed with xsltStrxfrm
 412  *
 413  * Returns a value < 0 if str1 sorts before str2,
 414  *         a value > 0 if str1 sorts after str2,
 415  *         0 if str1 and str2 are equal wrt sorting
 416  */
 417 int
 418 xsltLocaleStrcmp(xsltLocale locale, const xsltLocaleChar *str1, const xsltLocaleChar *str2) {
 419     (void)locale;
 420 #ifdef XSLT_LOCALE_WINAPI
 421 {
 422     int ret;
 423     if (str1 == str2) return(0);
 424     if (str1 == NULL) return(-1);
 425     if (str2 == NULL) return(1);
 426     ret = CompareStringW(locale, 0, str1, -1, str2, -1);
 427     if (ret == 0) {
 428         xsltTransformError(NULL, NULL, NULL, "xsltLocaleStrcmp : CompareStringW fail\n");
 429         return(0);
 430     }
 431     return(ret - 2);
 432 }
 433 #else
 434     return(xmlStrcmp(str1, str2));
 435 #endif
 436 }
 437
 438 #ifdef XSLT_LOCALE_WINAPI
 439 /**
 440  * xsltCountSupportedLocales:
 441  * @lcid: not used
 442  *
 443  * callback used to count locales
 444  *
 445  * Returns TRUE
 446  */
 447 BOOL CALLBACK
 448 xsltCountSupportedLocales(LPSTR lcid) {
 449     (void) lcid;
 450     ++xsltLocaleListSize;
 451     return(TRUE);
 452 }
 453
 454 /**
 455  * xsltIterateSupportedLocales:
 456  * @lcid: not used
 457  *
 458  * callback used to track locales
 459  *
 460  * Returns TRUE if not at the end of the array
 461  */
 462 BOOL CALLBACK
 463 xsltIterateSupportedLocales(LPSTR lcid) {
 464     static int count = 0;
 465     xmlChar    iso639lang [XSLTMAX_ISO639LANGLEN  +1];
 466     xmlChar    iso3136ctry[XSLTMAX_ISO3166CNTRYLEN+1];
 467     int        k, l;
 468     xsltRFC1766Info *p = xsltLocaleList + count;
 469
 470     k = sscanf(lcid, "%lx", (long*)&p->lcid);
 471     if (k < 1) goto end;
 472     /*don't count terminating null character*/
 473     k = GetLocaleInfoA(p->lcid, LOCALE_SISO639LANGNAME , iso639lang , sizeof(iso639lang ));
 474     if (--k < 1) goto end;
 475     l = GetLocaleInfoA(p->lcid, LOCALE_SISO3166CTRYNAME, iso3136ctry, sizeof(iso3136ctry));
 476     if (--l < 1) goto end;
 477
 478     {  /*fill results*/
 479         xmlChar    *q = p->tag;
 480         memcpy(q, iso639lang, k);
 481         q += k;
 482         *q++ = '-';
 483         memcpy(q, iso3136ctry, l);
 484         q += l;
 485         *q = '\0';
 486     }
 487     ++count;
 488 end:
 489     return((count < xsltLocaleListSize) ? TRUE : FALSE);
 490 }
 491
 492
 493 static void
 494 xsltEnumSupportedLocales(void) {
 495     xmlRMutexLock(xsltLocaleMutex);
 496     if (xsltLocaleListSize <= 0) {
 497         size_t len;
 498
 499         EnumSystemLocalesA(xsltCountSupportedLocales, LCID_SUPPORTED);
 500
 501         len = xsltLocaleListSize * sizeof(xsltRFC1766Info);
 502         xsltLocaleList = xmlMalloc(len);
 503         memset(xsltLocaleList, 0, len);
 504         EnumSystemLocalesA(xsltIterateSupportedLocales, LCID_SUPPORTED);
 505     }
 506     xmlRMutexUnlock(xsltLocaleMutex);
 507 }
 508
 509 #endif /*def XSLT_LOCALE_WINAPI*/