Here is the list from Apple for all the available languages
static const char * const __CFBundleLanguageNamesArray[] = {
"English", "French", "German", "Italian", "Dutch", "Swedish", "Spanish", "Danish",
"Portuguese", "Norwegian", "Hebrew", "Japanese", "Arabic", "Finnish", "Greek", "Icelandic",
"Maltese", "Turkish", "Croatian", "Chinese", "Urdu", "Hindi", "Thai", "Korean",
"Lithuanian", "Polish", "Hungarian", "Estonian", "Latvian", "Sami", "Faroese", "Farsi",
"Russian", "Chinese", "Dutch", "Irish", "Albanian", "Romanian", "Czech", "Slovak",
"Slovenian", "Yiddish", "Serbian", "Macedonian", "Bulgarian", "Ukrainian", "Byelorussian", "Uzbek",
"Kazakh", "Azerbaijani", "Azerbaijani", "Armenian", "Georgian", "Moldavian", "Kirghiz", "Tajiki",
"Turkmen", "Mongolian", "Mongolian", "Pashto", "Kurdish", "Kashmiri", "Sindhi", "Tibetan",
"Nepali", "Sanskrit", "Marathi", "Bengali", "Assamese", "Gujarati", "Punjabi", "Oriya",
"Malayalam", "Kannada", "Tamil", "Telugu", "Sinhalese", "Burmese", "Khmer", "Lao",
"Vietnamese", "Indonesian", "Tagalog", "Malay", "Malay", "Amharic", "Tigrinya", "Oromo",
"Somali", "Swahili", "Kinyarwanda", "Rundi", "Nyanja", "Malagasy", "Esperanto", "",
"", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "",
"Welsh", "Basque", "Catalan", "Latin", "Quechua", "Guarani", "Aymara", "Tatar",
"Uighur", "Dzongkha", "Javanese", "Sundanese", "Galician", "Afrikaans", "Breton", "Inuktitut",
"Scottish", "Manx", "Irish", "Tongan", "Greek", "Greenlandic", "Azerbaijani", "Nynorsk"
};
// string, with groups of 3 characters being 1 element in the array of abbreviations
const char * __CFBundleLanguageAbbreviationsArray =
"en\0" "fr\0" "de\0" "it\0" "nl\0" "sv\0" "es\0" "da\0"
"pt\0" "nb\0" "he\0" "ja\0" "ar\0" "fi\0" "el\0" "is\0"
"mt\0" "tr\0" "hr\0" "zh\0" "ur\0" "hi\0" "th\0" "ko\0"
"lt\0" "pl\0" "hu\0" "et\0" "lv\0" "se\0" "fo\0" "fa\0"
"ru\0" "zh\0" "nl\0" "ga\0" "sq\0" "ro\0" "cs\0" "sk\0"
"sl\0" "yi\0" "sr\0" "mk\0" "bg\0" "uk\0" "be\0" "uz\0"
"kk\0" "az\0" "az\0" "hy\0" "ka\0" "mo\0" "ky\0" "tg\0"
"tk\0" "mn\0" "mn\0" "ps\0" "ku\0" "ks\0" "sd\0" "bo\0"
"ne\0" "sa\0" "mr\0" "bn\0" "as\0" "gu\0" "pa\0" "or\0"
"ml\0" "kn\0" "ta\0" "te\0" "si\0" "my\0" "km\0" "lo\0"
"vi\0" "id\0" "tl\0" "ms\0" "ms\0" "am\0" "ti\0" "om\0"
"so\0" "sw\0" "rw\0" "rn\0" "\0\0\0" "mg\0" "eo\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\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" "\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\0" "\0\0\0"
"cy\0" "eu\0" "ca\0" "la\0" "qu\0" "gn\0" "ay\0" "tt\0"
"ug\0" "dz\0" "jv\0" "su\0" "gl\0" "af\0" "br\0" "iu\0"
"gd\0" "gv\0" "ga\0" "to\0" "el\0" "kl\0" "az\0" "nn\0";
Here is the link for reference
http://www.opensource.apple.com/source/CF/CF-550.13/CFBundle_Resources.c
