src/third_party/cld/languages/internal/languages.cc

   1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "languages/public/languages.h"
   6
   7 #include "base/string_util.h"
   8 #include "encodings/compact_lang_det/win/cld_basictypes.h"
   9
  10
  11 Language default_language() {return ENGLISH;}
  12
  13
  14 // Language names and codes
  15
  16 struct LanguageInfo {
  17   const char * language_name_;
  18   const char * language_code_639_1_;   // the ISO-639-1 code for the language
  19   const char * language_code_639_2_;   // the ISO-639-2 code for the language
  20   const char * language_code_other_;   // some nonstandard code for the language
  21 };
  22
  23 static const LanguageInfo kLanguageInfoTable[] = {
  24   { "ENGLISH",             "en", "eng", NULL},
  25   { "DANISH",              "da", "dan", NULL},
  26   { "DUTCH",               "nl", "dut", NULL},
  27   { "FINNISH",             "fi", "fin", NULL},
  28   { "FRENCH",              "fr", "fre", NULL},
  29   { "GERMAN",              "de", "ger", NULL},
  30   { "HEBREW",              "he", "heb", NULL},
  31   { "ITALIAN",             "it", "ita", NULL},
  32   { "Japanese",            "ja", "jpn", NULL},
  33   { "Korean",              "ko", "kor", NULL},
  34   { "NORWEGIAN",           "nb", "nor", NULL},
  35   { "POLISH",              "pl", "pol", NULL},
  36   { "PORTUGUESE",          "pt", "por", NULL},
  37   { "RUSSIAN",             "ru", "rus", NULL},
  38   { "SPANISH",             "es", "spa", NULL},
  39   { "SWEDISH",             "sv", "swe", NULL},
  40   { "Chinese",             "zh", "chi", "zh-CN"},
  41   { "CZECH",               "cs", "cze", NULL},
  42   { "GREEK",               "el", "gre", NULL},
  43   { "ICELANDIC",           "is", "ice", NULL},
  44   { "LATVIAN",             "lv", "lav", NULL},
  45   { "LITHUANIAN",          "lt", "lit", NULL},
  46   { "ROMANIAN",            "ro", "rum", NULL},
  47   { "HUNGARIAN",           "hu", "hun", NULL},
  48   { "ESTONIAN",            "et", "est", NULL},
  49   // TODO: Although Teragram has two output names "TG_UNKNOWN_LANGUAGE"
  50   // and "Unknown", they are essentially the same. Need to unify them.
  51   // "un" and "ut" are invented by us, not from ISO-639.
  52   //
  53   { "TG_UNKNOWN_LANGUAGE", NULL, NULL, "ut"},
  54   { "Unknown",             NULL, NULL, "un"},
  55   { "BULGARIAN",           "bg", "bul", NULL},
  56   { "CROATIAN",            "hr", "scr", NULL},
  57   { "SERBIAN",             "sr", "scc", NULL},
  58   { "IRISH",               "ga", "gle", NULL},
  59   { "GALICIAN",            "gl", "glg", NULL},
  60   // Impossible to tell Tagalog from Filipino at the moment.
  61   // Use ISO 639-2 code for Filipino here.
  62   { "TAGALOG",             NULL, "fil", NULL},
  63   { "TURKISH",             "tr", "tur", NULL},
  64   { "UKRAINIAN",           "uk", "ukr", NULL},
  65   { "HINDI",               "hi", "hin", NULL},
  66   { "MACEDONIAN",          "mk", "mac", NULL},
  67   { "BENGALI",             "bn", "ben", NULL},
  68   { "INDONESIAN",          "id", "ind", NULL},
  69   { "LATIN",               "la", "lat", NULL},
  70   { "MALAY",               "ms", "may", NULL},
  71   { "MALAYALAM",           "ml", "mal", NULL},
  72   { "WELSH",               "cy", "wel", NULL},
  73   { "NEPALI",              "ne", "nep", NULL},
  74   { "TELUGU",              "te", "tel", NULL},
  75   { "ALBANIAN",            "sq", "alb", NULL},
  76   { "TAMIL",               "ta", "tam", NULL},
  77   { "BELARUSIAN",          "be", "bel", NULL},
  78   { "JAVANESE",            "jw", "jav", NULL},
  79   { "OCCITAN",             "oc", "oci", NULL},
  80   { "URDU",                "ur", "urd", NULL},
  81   { "BIHARI",              "bh", "bih", NULL},
  82   { "GUJARATI",            "gu", "guj", NULL},
  83   { "THAI",                "th", "tha", NULL},
  84   { "ARABIC",              "ar", "ara", NULL},
  85   { "CATALAN",             "ca", "cat", NULL},
  86   { "ESPERANTO",           "eo", "epo", NULL},
  87   { "BASQUE",              "eu", "baq", NULL},
  88   { "INTERLINGUA",         "ia", "ina", NULL},
  89   { "KANNADA",             "kn", "kan", NULL},
  90   { "PUNJABI",             "pa", "pan", NULL},
  91   { "SCOTS_GAELIC",        "gd", "gla", NULL},
  92   { "SWAHILI",             "sw", "swa", NULL},
  93   { "SLOVENIAN",           "sl", "slv", NULL},
  94   { "MARATHI",             "mr", "mar", NULL},
  95   { "MALTESE",             "mt", "mlt", NULL},
  96   { "VIETNAMESE",          "vi", "vie", NULL},
  97   { "FRISIAN",             "fy", "fry", NULL},
  98   { "SLOVAK",              "sk", "slo", NULL},
  99   { "ChineseT",
 100     NULL,  NULL,  // We intentionally set these 2 fields to NULL to avoid
 101                   // confusion between CHINESE_T and CHINESE.
 102     "zh-TW"},
 103   { "FAROESE",             "fo", "fao", NULL},
 104   { "SUNDANESE",           "su", "sun", NULL},
 105   { "UZBEK",               "uz", "uzb", NULL},
 106   { "AMHARIC",             "am", "amh", NULL},
 107   { "AZERBAIJANI",         "az", "aze", NULL},
 108   { "GEORGIAN",            "ka", "geo", NULL},
 109   { "TIGRINYA",            "ti", "tir", NULL},
 110   { "PERSIAN",             "fa", "per", NULL},
 111   { "BOSNIAN",             "bs", "bos", NULL},
 112   { "SINHALESE",           "si", "sin", NULL},
 113   { "NORWEGIAN_N",         "nn", "nno", NULL},
 114   { "PORTUGUESE_P",        NULL, NULL, "pt-PT"},
 115   { "PORTUGUESE_B",        NULL, NULL, "pt-BR"},
 116   { "XHOSA",               "xh", "xho", NULL},
 117   { "ZULU",                "zu", "zul", NULL},
 118   { "GUARANI",             "gn", "grn", NULL},
 119   { "SESOTHO",             "st", "sot", NULL},
 120   { "TURKMEN",             "tk", "tuk", NULL},
 121   { "KYRGYZ",              "ky", "kir", NULL},
 122   { "BRETON",              "br", "bre", NULL},
 123   { "TWI",                 "tw", "twi", NULL},
 124   { "YIDDISH",             "yi", "yid", NULL},
 125   { "SERBO_CROATIAN",      "sh", NULL, NULL},
 126   { "SOMALI",              "so", "som", NULL},
 127   { "UIGHUR",              "ug", "uig", NULL},
 128   { "KURDISH",             "ku", "kur", NULL},
 129   { "MONGOLIAN",           "mn", "mon", NULL},
 130   { "ARMENIAN",            "hy", "arm", NULL},
 131   { "LAOTHIAN",            "lo", "lao", NULL},
 132   { "SINDHI",              "sd", "snd", NULL},
 133   { "RHAETO_ROMANCE",      "rm", "roh", NULL},
 134   { "AFRIKAANS",           "af", "afr", NULL},
 135   { "LUXEMBOURGISH",       "lb", "ltz", NULL},
 136   { "BURMESE",             "my", "bur", NULL},
 137   // KHMER is known as Cambodian for Google user interfaces.
 138   { "KHMER",               "km", "khm", NULL},
 139   { "TIBETAN",             "bo", "tib", NULL},
 140   { "DHIVEHI",             "dv", "div", NULL},
 141   { "CHEROKEE",            NULL, "chr", NULL},
 142   { "SYRIAC",              NULL, "syr", NULL},
 143   { "LIMBU",               NULL, NULL, "sit-NP"},
 144   { "ORIYA",               "or", "ori", NULL},
 145   { "ASSAMESE",            "as", "asm", NULL},
 146   { "CORSICAN",            "co", "cos", NULL},
 147   { "INTERLINGUE",         "ie", "ine", NULL},
 148   { "KAZAKH",              "kk", "kaz", NULL},
 149   { "LINGALA",             "ln", "lin", NULL},
 150   { "MOLDAVIAN",           "mo", "mol", NULL},
 151   { "PASHTO",              "ps", "pus", NULL},
 152   { "QUECHUA",             "qu", "que", NULL},
 153   { "SHONA",               "sn", "sna", NULL},
 154   { "TAJIK",               "tg", "tgk", NULL},
 155   { "TATAR",               "tt", "tat", NULL},
 156   { "TONGA",               "to", "tog", NULL},
 157   { "YORUBA",              "yo", "yor", NULL},
 158   { "CREOLES_AND_PIDGINS_ENGLISH_BASED", NULL, "cpe", NULL},
 159   { "CREOLES_AND_PIDGINS_FRENCH_BASED",  NULL, "cpf", NULL},
 160   { "CREOLES_AND_PIDGINS_PORTUGUESE_BASED", NULL, "cpp", NULL},
 161   { "CREOLES_AND_PIDGINS_OTHER", NULL, "crp", NULL},
 162   { "MAORI",               "mi", "mao", NULL},
 163   { "WOLOF",               "wo", "wol", NULL},
 164   { "ABKHAZIAN",           "ab", "abk", NULL},
 165   { "AFAR",                "aa", "aar", NULL},
 166   { "AYMARA",              "ay", "aym", NULL},
 167   { "BASHKIR",             "ba", "bak", NULL},
 168   { "BISLAMA",             "bi", "bis", NULL},
 169   { "DZONGKHA",            "dz", "dzo", NULL},
 170   { "FIJIAN",              "fj", "fij", NULL},
 171   { "GREENLANDIC",         "kl", "kal", NULL},
 172   { "HAUSA",               "ha", "hau", NULL},
 173   { "HAITIAN_CREOLE",       "ht", NULL, NULL},
 174   { "INUPIAK",             "ik", "ipk", NULL},
 175   { "INUKTITUT",           "iu", "iku", NULL},
 176   { "KASHMIRI",            "ks", "kas", NULL},
 177   { "KINYARWANDA",         "rw", "kin", NULL},
 178   { "MALAGASY",            "mg", "mlg", NULL},
 179   { "NAURU",               "na", "nau", NULL},
 180   { "OROMO",               "om", "orm", NULL},
 181   { "RUNDI",               "rn", "run", NULL},
 182   { "SAMOAN",              "sm", "smo", NULL},
 183   { "SANGO",               "sg", "sag", NULL},
 184   { "SANSKRIT",            "sa", "san", NULL},
 185   { "SISWANT",             "ss", "ssw", NULL},
 186   { "TSONGA",              "ts", "tso", NULL},
 187   { "TSWANA",              "tn", "tsn", NULL},
 188   { "VOLAPUK",             "vo", "vol", NULL},
 189   { "ZHUANG",              "za", "zha", NULL},
 190   { "KHASI",               NULL, "kha", NULL},
 191   { "SCOTS",               NULL, "sco", NULL},
 192   { "GANDA",               "lg", "lug", NULL},
 193   { "MANX",                "gv", "glv", NULL},
 194   { "MONTENEGRIN",         NULL, NULL, "sr-ME"},
 195   { "XX",                  NULL, NULL, "XX"},
 196 };
 197
 198 COMPILE_ASSERT(arraysize(kLanguageInfoTable) == NUM_LANGUAGES + 1,
 199                kLanguageInfoTable_has_incorrect_length);
 200
 201
 202 // LANGUAGE NAMES
 203
 204 const char* default_language_name() {
 205   return kLanguageInfoTable[ENGLISH].language_name_;
 206 }
 207
 208 static const char* const kInvalidLanguageName = "invalid_language";
 209
 210 const char *invalid_language_name() {
 211   return kInvalidLanguageName;
 212 }
 213
 214 const char* LanguageName(Language lang) {
 215   return IsValidLanguage(lang)
 216       ? kLanguageInfoTable[lang].language_name_
 217       : kInvalidLanguageName;
 218 }
 219
 220
 221
 222 // LANGUAGE CODES
 223
 224
 225 // The space before invalid_language_code is intentional. It is used
 226 // to prevent it matching any two letter language code.
 227 //
 228 static const char* const kInvalidLanguageCode = " invalid_language_code";
 229
 230 const char *invalid_language_code() {
 231   return kInvalidLanguageCode;
 232 }
 233
 234 const char * LanguageCode(Language lang) {
 235   if (! IsValidLanguage(lang))
 236     return kInvalidLanguageCode;
 237   const LanguageInfo& info = kLanguageInfoTable[lang];
 238   if (info.language_code_639_1_) {
 239     return info.language_code_639_1_;
 240   } else if (info.language_code_639_2_) {
 241     return info.language_code_639_2_;
 242   } else if (info.language_code_other_) {
 243     return info.language_code_other_;
 244   } else {
 245     return kInvalidLanguageCode;
 246   }
 247 }
 248
 249 const char* default_language_code() {
 250   return kLanguageInfoTable[ENGLISH].language_code_639_1_;
 251 }
 252
 253 const char* LanguageCodeISO639_1(Language lang) {
 254   if (! IsValidLanguage(lang))
 255     return kInvalidLanguageCode;
 256   if (const char* code = kLanguageInfoTable[lang].language_code_639_1_)
 257     return code;
 258   return kInvalidLanguageCode;
 259 }
 260
 261 const char* LanguageCodeISO639_2(Language lang) {
 262   if (! IsValidLanguage(lang))
 263     return kInvalidLanguageCode;
 264   if (const char* code = kLanguageInfoTable[lang].language_code_639_2_)
 265     return code;
 266   return kInvalidLanguageCode;
 267 }
 268
 269 const char* LanguageCodeWithDialects(Language lang) {
 270   if (lang == CHINESE)
 271     return "zh-CN";
 272   return LanguageCode(lang);
 273 }
 274
 275
 276
 277 bool LanguageFromCode(const char* lang_code, Language *language) {
 278   *language = UNKNOWN_LANGUAGE;
 279   if ( lang_code == NULL ) return false;
 280
 281   for ( int i = 0 ; i < kNumLanguages ; i++ ) {
 282     const LanguageInfo& info = kLanguageInfoTable[i];
 283     if ((info.language_code_639_1_ &&
 284          !base::strcasecmp(lang_code, info.language_code_639_1_)) ||
 285         (info.language_code_639_2_ &&
 286          !base::strcasecmp(lang_code, info.language_code_639_2_)) ||
 287         (info.language_code_other_ &&
 288          !base::strcasecmp(lang_code, info.language_code_other_))) {
 289       *language = static_cast<Language>(i);
 290       return true;
 291     }
 292   }
 293
 294   // For convenience, this function can also parse the non-standard
 295   // five-letter language codes "zh-cn" and "zh-tw" which are used by
 296   // front-ends such as GWS to distinguish Simplified from Traditional
 297   // Chinese.
 298   if (!base::strcasecmp(lang_code, "zh-cn") ||
 299       !base::strcasecmp(lang_code, "zh_cn")) {
 300     *language = CHINESE;
 301     return true;
 302   }
 303   if (!base::strcasecmp(lang_code, "zh-tw") ||
 304       !base::strcasecmp(lang_code, "zh_tw")) {
 305     *language = CHINESE_T;
 306     return true;
 307   }
 308   if (!base::strcasecmp(lang_code, "sr-me") ||
 309       !base::strcasecmp(lang_code, "sr_me")) {
 310     *language = MONTENEGRIN;
 311     return true;
 312   }
 313
 314   // Process language-code synonyms.
 315   if (!base::strcasecmp(lang_code, "he")) {
 316     *language = HEBREW;  // Use "iw".
 317     return true;
 318   }
 319   if (!base::strcasecmp(lang_code, "in")) {
 320     *language = INDONESIAN;  // Use "id".
 321     return true;
 322   }
 323   if (!base::strcasecmp(lang_code, "ji")) {
 324     *language = YIDDISH;  // Use "yi".
 325     return true;
 326   }
 327
 328   // Process language-detection synonyms.
 329   // These distinct languages cannot be differentiated by our current
 330   // language-detection algorithms.
 331   if (!base::strcasecmp(lang_code, "fil")) {
 332     *language = TAGALOG;
 333     return true;
 334   }
 335
 336   return false;
 337 }