localename.c

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# endif
# ifndef SUBLANG_CHINESE_MACAU
# define SUBLANG_CHINESE_MACAU 0x05
# endif
# ifndef SUBLANG_ENGLISH_SOUTH_AFRICA
# define SUBLANG_ENGLISH_SOUTH_AFRICA 0x07
# endif
# ifndef SUBLANG_ENGLISH_JAMAICA
# define SUBLANG_ENGLISH_JAMAICA 0x08
# endif
# ifndef SUBLANG_ENGLISH_CARIBBEAN
# define SUBLANG_ENGLISH_CARIBBEAN 0x09
# endif
# ifndef SUBLANG_ENGLISH_BELIZE
# define SUBLANG_ENGLISH_BELIZE 0x0a
# endif
# ifndef SUBLANG_ENGLISH_TRINIDAD
# define SUBLANG_ENGLISH_TRINIDAD 0x0b
# endif
# ifndef SUBLANG_ENGLISH_ZIMBABWE
# define SUBLANG_ENGLISH_ZIMBABWE 0x0c
# endif
# ifndef SUBLANG_ENGLISH_PHILIPPINES
# define SUBLANG_ENGLISH_PHILIPPINES 0x0d
# endif
# ifndef SUBLANG_ENGLISH_INDONESIA
# define SUBLANG_ENGLISH_INDONESIA 0x0e
# endif
# ifndef SUBLANG_ENGLISH_HONGKONG
# define SUBLANG_ENGLISH_HONGKONG 0x0f
# endif
# ifndef SUBLANG_ENGLISH_INDIA
# define SUBLANG_ENGLISH_INDIA 0x10
# endif
# ifndef SUBLANG_ENGLISH_MALAYSIA
# define SUBLANG_ENGLISH_MALAYSIA 0x11
# endif
# ifndef SUBLANG_ENGLISH_SINGAPORE
# define SUBLANG_ENGLISH_SINGAPORE 0x12
# endif
# ifndef SUBLANG_FRENCH_LUXEMBOURG
# define SUBLANG_FRENCH_LUXEMBOURG 0x05
# endif
# ifndef SUBLANG_FRENCH_MONACO
# define SUBLANG_FRENCH_MONACO 0x06
# endif
# ifndef SUBLANG_FRENCH_WESTINDIES
# define SUBLANG_FRENCH_WESTINDIES 0x07
# endif
# ifndef SUBLANG_FRENCH_REUNION
# define SUBLANG_FRENCH_REUNION 0x08
# endif
# ifndef SUBLANG_FRENCH_CONGO
# define SUBLANG_FRENCH_CONGO 0x09
# endif
# ifndef SUBLANG_FRENCH_SENEGAL
# define SUBLANG_FRENCH_SENEGAL 0x0a
# endif
# ifndef SUBLANG_FRENCH_CAMEROON
# define SUBLANG_FRENCH_CAMEROON 0x0b
# endif
# ifndef SUBLANG_FRENCH_COTEDIVOIRE
# define SUBLANG_FRENCH_COTEDIVOIRE 0x0c
# endif
# ifndef SUBLANG_FRENCH_MALI
# define SUBLANG_FRENCH_MALI 0x0d
# endif
# ifndef SUBLANG_FRENCH_MOROCCO
# define SUBLANG_FRENCH_MOROCCO 0x0e
# endif
# ifndef SUBLANG_FRENCH_HAITI
# define SUBLANG_FRENCH_HAITI 0x0f
# endif
# ifndef SUBLANG_GERMAN_LUXEMBOURG
# define SUBLANG_GERMAN_LUXEMBOURG 0x04
# endif
# ifndef SUBLANG_GERMAN_LIECHTENSTEIN
# define SUBLANG_GERMAN_LIECHTENSTEIN 0x05
# endif
# ifndef SUBLANG_KASHMIRI_INDIA
# define SUBLANG_KASHMIRI_INDIA 0x02
# endif
# ifndef SUBLANG_MALAY_MALAYSIA
# define SUBLANG_MALAY_MALAYSIA 0x01
# endif
# ifndef SUBLANG_MALAY_BRUNEI_DARUSSALAM
# define SUBLANG_MALAY_BRUNEI_DARUSSALAM 0x02
# endif
# ifndef SUBLANG_NEPALI_INDIA
# define SUBLANG_NEPALI_INDIA 0x02
# endif
# ifndef SUBLANG_PUNJABI_INDIA
# define SUBLANG_PUNJABI_INDIA 0x00
# endif
# ifndef SUBLANG_PUNJABI_PAKISTAN
# define SUBLANG_PUNJABI_PAKISTAN 0x01
# endif
# ifndef SUBLANG_ROMANIAN_ROMANIA
# define SUBLANG_ROMANIAN_ROMANIA 0x00
# endif
# ifndef SUBLANG_ROMANIAN_MOLDOVA
# define SUBLANG_ROMANIAN_MOLDOVA 0x01
# endif
# ifndef SUBLANG_SERBIAN_LATIN
# define SUBLANG_SERBIAN_LATIN 0x02
# endif
# ifndef SUBLANG_SERBIAN_CYRILLIC
# define SUBLANG_SERBIAN_CYRILLIC 0x03
# endif
# ifndef SUBLANG_SINDHI_INDIA
# define SUBLANG_SINDHI_INDIA 0x00
# endif
# ifndef SUBLANG_SINDHI_PAKISTAN
# define SUBLANG_SINDHI_PAKISTAN 0x01
# endif
# ifndef SUBLANG_SPANISH_GUATEMALA
# define SUBLANG_SPANISH_GUATEMALA 0x04
# endif
# ifndef SUBLANG_SPANISH_COSTA_RICA
# define SUBLANG_SPANISH_COSTA_RICA 0x05
# endif
# ifndef SUBLANG_SPANISH_PANAMA
# define SUBLANG_SPANISH_PANAMA 0x06
# endif
# ifndef SUBLANG_SPANISH_DOMINICAN_REPUBLIC
# define SUBLANG_SPANISH_DOMINICAN_REPUBLIC 0x07
# endif
# ifndef SUBLANG_SPANISH_VENEZUELA
# define SUBLANG_SPANISH_VENEZUELA 0x08
# endif
# ifndef SUBLANG_SPANISH_COLOMBIA
# define SUBLANG_SPANISH_COLOMBIA 0x09
# endif
# ifndef SUBLANG_SPANISH_PERU
# define SUBLANG_SPANISH_PERU 0x0a
# endif
# ifndef SUBLANG_SPANISH_ARGENTINA
# define SUBLANG_SPANISH_ARGENTINA 0x0b
# endif
# ifndef SUBLANG_SPANISH_ECUADOR
# define SUBLANG_SPANISH_ECUADOR 0x0c
# endif
# ifndef SUBLANG_SPANISH_CHILE
# define SUBLANG_SPANISH_CHILE 0x0d
# endif
# ifndef SUBLANG_SPANISH_URUGUAY
# define SUBLANG_SPANISH_URUGUAY 0x0e
# endif
# ifndef SUBLANG_SPANISH_PARAGUAY
# define SUBLANG_SPANISH_PARAGUAY 0x0f
# endif
# ifndef SUBLANG_SPANISH_BOLIVIA
# define SUBLANG_SPANISH_BOLIVIA 0x10
# endif
# ifndef SUBLANG_SPANISH_EL_SALVADOR
# define SUBLANG_SPANISH_EL_SALVADOR 0x11
# endif
# ifndef SUBLANG_SPANISH_HONDURAS
# define SUBLANG_SPANISH_HONDURAS 0x12
# endif
# ifndef SUBLANG_SPANISH_NICARAGUA
# define SUBLANG_SPANISH_NICARAGUA 0x13
# endif
# ifndef SUBLANG_SPANISH_PUERTO_RICO
# define SUBLANG_SPANISH_PUERTO_RICO 0x14
# endif
# ifndef SUBLANG_SWEDISH_FINLAND
# define SUBLANG_SWEDISH_FINLAND 0x02
# endif
# ifndef SUBLANG_TAMAZIGHT_ARABIC
# define SUBLANG_TAMAZIGHT_ARABIC 0x01
# endif
# ifndef SUBLANG_TAMAZIGHT_LATIN
# define SUBLANG_TAMAZIGHT_LATIN 0x02
# endif
# ifndef SUBLANG_TIGRINYA_ETHIOPIA
# define SUBLANG_TIGRINYA_ETHIOPIA 0x00
# endif
# ifndef SUBLANG_TIGRINYA_ERITREA
# define SUBLANG_TIGRINYA_ERITREA 0x01
# endif
# ifndef SUBLANG_URDU_PAKISTAN
# define SUBLANG_URDU_PAKISTAN 0x01
# endif
# ifndef SUBLANG_URDU_INDIA
# define SUBLANG_URDU_INDIA 0x02
# endif
# ifndef SUBLANG_UZBEK_LATIN
# define SUBLANG_UZBEK_LATIN 0x01
# endif
# ifndef SUBLANG_UZBEK_CYRILLIC
# define SUBLANG_UZBEK_CYRILLIC 0x02
# endif
#endif

# if HAVE_CFLOCALECOPYCURRENT || HAVE_CFPREFERENCESCOPYAPPVALUE
/* MacOS X 10.2 or newer */

/* Canonicalize a MacOS X locale name to a Unix locale name.
   NAME is a sufficiently large buffer.
   On input, it contains the MacOS X locale name.
   On output, it contains the Unix locale name.  */
void
_nl_locale_name_canonicalize (char *name)
{
  /* This conversion is based on a posting by
     Deborah GoldSmith <[e-mail]> on 2005-03-08,
     http://lists.apple.com/archives/carbon-dev/2005/Mar/msg00293.html */

  /* Convert legacy (NeXTstep inherited) English names to Unix (ISO 639 and
     ISO 3166) names.  Prior to MacOS X 10.3, there is no API for doing this.
     Therefore we do it ourselves, using a table based on the results of the
     MacOS X 10.3.8 function
     CFLocaleCreateCanonicalLocaleIdentifierFromString().  */
  typedef struct { const char legacy[21+1]; const char unixy[5+1]; }
	  legacy_entry;
  static const legacy_entry legacy_table[] = {
    { "Afrikaans",             "af" },
    { "Albanian",              "sq" },
    { "Amharic",               "am" },
    { "Arabic",                "ar" },
    { "Armenian",              "hy" },
    { "Assamese",              "as" },
    { "Aymara",                "ay" },
    { "Azerbaijani",           "az" },
    { "Basque",                "eu" },
    { "Belarusian",            "be" },
    { "Belorussian",           "be" },
    { "Bengali",               "bn" },
    { "Brazilian Portugese",   "pt_BR" },
    { "Brazilian Portuguese",  "pt_BR" },
    { "Breton",                "br" },
    { "Bulgarian",             "bg" },
    { "Burmese",               "my" },
    { "Byelorussian",          "be" },
    { "Catalan",               "ca" },
    { "Chewa",                 "ny" },
    { "Chichewa",              "ny" },
    { "Chinese",               "zh" },
    { "Chinese, Simplified",   "zh_CN" },
    { "Chinese, Traditional",  "zh_TW" },
    { "Chinese, Tradtional",   "zh_TW" },
    { "Croatian",              "hr" },
    { "Czech",                 "cs" },
    { "Danish",                "da" },
    { "Dutch",                 "nl" },
    { "Dzongkha",              "dz" },
    { "English",               "en" },
    { "Esperanto",             "eo" },
    { "Estonian",              "et" },
    { "Faroese",               "fo" },
    { "Farsi",                 "fa" },
    { "Finnish",               "fi" },
    { "Flemish",               "nl_BE" },
    { "French",                "fr" },
    { "Galician",              "gl" },
    { "Gallegan",              "gl" },
    { "Georgian",              "ka" },
    { "German",                "de" },
    { "Greek",                 "el" },
    { "Greenlandic",           "kl" },
    { "Guarani",               "gn" },
    { "Gujarati",              "gu" },
    { "Hawaiian",              "haw" }, /* Yes, "haw", not "cpe".  */
    { "Hebrew",                "he" },
    { "Hindi",                 "hi" },
    { "Hungarian",             "hu" },
    { "Icelandic",             "is" },
    { "Indonesian",            "id" },
    { "Inuktitut",             "iu" },
    { "Irish",                 "ga" },
    { "Italian",               "it" },
    { "Japanese",              "ja" },
    { "Javanese",              "jv" },
    { "Kalaallisut",           "kl" },
    { "Kannada",               "kn" },
    { "Kashmiri",              "ks" },
    { "Kazakh",                "kk" },
    { "Khmer",                 "km" },
    { "Kinyarwanda",           "rw" },
    { "Kirghiz",               "ky" },
    { "Korean",                "ko" },
    { "Kurdish",               "ku" },
    { "Latin",                 "la" },
    { "Latvian",               "lv" },
    { "Lithuanian",            "lt" },
    { "Macedonian",            "mk" },
    { "Malagasy",              "mg" },
    { "Malay",                 "ms" },
    { "Malayalam",             "ml" },
    { "Maltese",               "mt" },
    { "Manx",                  "gv" },
    { "Marathi",               "mr" },
    { "Moldavian",             "mo" },
    { "Mongolian",             "mn" },
    { "Nepali",                "ne" },
    { "Norwegian",             "nb" }, /* Yes, "nb", not the obsolete "no".  */
    { "Nyanja",                "ny" },
    { "Nynorsk",               "nn" },
    { "Oriya",                 "or" },
    { "Oromo",                 "om" },
    { "Panjabi",               "pa" },
    { "Pashto",                "ps" },
    { "Persian",               "fa" },
    { "Polish",                "pl" },
    { "Portuguese",            "pt" },
    { "Portuguese, Brazilian", "pt_BR" },
    { "Punjabi",               "pa" },
    { "Pushto",                "ps" },
    { "Quechua",               "qu" },
    { "Romanian",              "ro" },
    { "Ruanda",                "rw" },
    { "Rundi",                 "rn" },
    { "Russian",               "ru" },
    { "Sami",                  "se_NO" }, /* Not just "se".  */
    { "Sanskrit",              "sa" },
    { "Scottish",              "gd" },
    { "Serbian",               "sr" },
    { "Simplified Chinese",    "zh_CN" },
    { "Sindhi",                "sd" },
    { "Sinhalese",             "si" },
    { "Slovak",                "sk" },
    { "Slovenian",             "sl" },
    { "Somali",                "so" },
    { "Spanish",               "es" },
    { "Sundanese",             "su" },
    { "Swahili",               "sw" },
    { "Swedish",               "sv" },
    { "Tagalog",               "tl" },
    { "Tajik",                 "tg" },
    { "Tajiki",                "tg" },
    { "Tamil",                 "ta" },
    { "Tatar",                 "tt" },
    { "Telugu",                "te" },
    { "Thai",                  "th" },
    { "Tibetan",               "bo" },
    { "Tigrinya",              "ti" },
    { "Tongan",                "to" },
    { "Traditional Chinese",   "zh_TW" },
    { "Turkish",               "tr" },
    { "Turkmen",               "tk" },
    { "Uighur",                "ug" },
    { "Ukrainian",             "uk" },
    { "Urdu",                  "ur" },
    { "Uzbek",                 "uz" },
    { "Vietnamese",            "vi" },
    { "Welsh",                 "cy" },
    { "Yiddish",               "yi" }
  };

  /* Convert new-style locale names with language tags (ISO 639 and ISO 15924)
     to Unix (ISO 639 and ISO 3166) names.  */
  typedef struct { const char langtag[7+1]; const char unixy[12+1]; }
	  langtag_entry;
  static const langtag_entry langtag_table[] = {
    /* MacOS X has "az-Arab", "az-Cyrl", "az-Latn".
       The default script for az on Unix is Latin.  */
    { "az-Latn", "az" },
    /* MacOS X has "ga-dots".  Does not yet exist on Unix.  */
    { "ga-dots", "ga" },
    /* MacOS X has "kk-Cyrl".  Does not yet exist on Unix.  */
    /* MacOS X has "mn-Cyrl", "mn-Mong".
       The default script for mn on Unix is Cyrillic.  */
    { "mn-Cyrl", "mn" },
    /* MacOS X has "ms-Arab", "ms-Latn".
       The default script for ms on Unix is Latin.  */
    { "ms-Latn", "ms" },
    /* MacOS X has "tg-Cyrl".
       The default script for tg on Unix is Cyrillic.  */
    { "tg-Cyrl", "tg" },
    /* MacOS X has "tk-Cyrl".  Does not yet exist on Unix.  */
    /* MacOS X has "tt-Cyrl".
       The default script for tt on Unix is Cyrillic.  */
    { "tt-Cyrl", "tt" },
    /* MacOS X has "zh-Hans", "zh-Hant".
       Country codes are used to distinguish these on Unix.  */
    { "zh-Hans", "zh_CN" },
    { "zh-Hant", "zh_TW" }
  };

  /* Convert script names (ISO 15924) to Unix conventions.
     See http://www.unicode.org/iso15924/iso15924-codes.html  */
  typedef struct { const char script[4+1]; const char unixy[9+1]; }
	  script_entry;
  static const script_entry script_table[] = {
    { "Arab", "arabic" },
    { "Cyrl", "cyrillic" },
    { "Mong", "mongolian" }
  };

  /* Step 1: Convert using legacy_table.  */
  if (name[0] >= 'A' && name[0] <= 'Z')
    {
      unsigned int i1, i2;
      i1 = 0;
      i2 = sizeof (legacy_table) / sizeof (legacy_entry);
      while (i2 - i1 > 1)
	{
	  /* At this point we know that if name occurs in legacy_table,
	     its index must be >= i1 and < i2.  */
	  unsigned int i = (i1 + i2) >> 1;
	  const legacy_entry *p = &legacy_table[i];
	  if (strcmp (name, p->legacy) < 0)
	    i2 = i;
	  else
	    i1 = i;
	}
      if (strcmp (name, legacy_table[i1].legacy) == 0)
	{
	  strcpy (name, legacy_table[i1].unixy);
	  return;
	}
    }

  /* Step 2: Convert using langtag_table and script_table.  */
  if (strlen (name) == 7 && name[2] == '-')
    {
      unsigned int i1, i2;
      i1 = 0;
      i2 = sizeof (langtag_table) / sizeof (langtag_entry);
      while (i2 - i1 > 1)
	{
	  /* At this point we know that if name occurs in langtag_table,
	     its index must be >= i1 and < i2.  */
	  unsigned int i = (i1 + i2) >> 1;
	  const langtag_entry *p = &langtag_table[i];
	  if (strcmp (name, p->langtag) < 0)
	    i2 = i;
	  else
	    i1 = i;
	}
      if (strcmp (name, langtag_table[i1].langtag) == 0)
	{
	  strcpy (name, langtag_table[i1].unixy);
	  return;
	}

      i1 = 0;
      i2 = sizeof (script_table) / sizeof (script_entry);
      while (i2 - i1 > 1)
	{
	  /* At this point we know that if (name + 3) occurs in script_table,
	     its index must be >= i1 and < i2.  */
	  unsigned int i = (i1 + i2) >> 1;
	  const script_entry *p = &script_table[i];
	  if (strcmp (name + 3, p->script) < 0)
	    i2 = i;
	  else
	    i1 = i;
	}
      if (strcmp (name + 3, script_table[i1].script) == 0)
	{
	  name[2] = '@';
	  strcpy (name + 3, script_table[i1].unixy);
	  return;
	}
    }

  /* Step 3: Convert new-style dash to Unix underscore. */
  {
    char *p;
    for (p = name; *p != '\0'; p++)
      if (*p == '-')
	*p = '_';
  }
}

#endif

/* XPG3 defines the result of 'setlocale (category, NULL)' as:
   "Directs 'setlocale()' to query 'category' and return the current
    setting of 'local'."
   However it does not specify the exact format.  Neither do SUSV2 and
   ISO C 99.  So we can use this feature only on selected systems (e.g.
   those using GNU C Library).  */
#if defined _LIBC || (defined __GLIBC__ && __GLIBC__ >= 2)
# define HAVE_LOCALE_NULL
#endif

/* Determine the current locale's name, and canonicalize it into XPG syntax
     language[_territory][.codeset][@modifier]
   The codeset part in the result is not reliable; the locale_charset()
   should be used for codeset information instead.
   The result must not be freed; it is statically allocated.  */

const char *
_nl_locale_name_posix (int category, const char *categoryname)
{
  /* Use the POSIX methods of looking to 'LC_ALL', 'LC_xxx', and 'LANG'.
     On some systems this can be done by the 'setlocale' function itself.  */
#if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL
  return setlocale (category, NULL);
#else
  const char *retval;

  /* Setting of LC_ALL overrides all other.  */
  retval = getenv ("LC_ALL");
  if (retval != NULL && retval[0] != '\0')
    return retval;
  /* Next comes the name of the desired category.  */