How to get a list of constants from Locale class of Flutter? - flutter

Question

I have an application who use locale to choose the language and a json with translations and I am making a configurator. For it, I need to have a list of locale in the format language_COUNTRYNAME like en_US.
I have found this list of constants in Locale flutter class and I want to get the complete list in JSON without copy it manually, how can I do this ?

Answer 1

I have do finally with the manual way.
Here the list:
{
"af_NA": "Afrikaans Namibia",
"af_ZA": "Afrikaans South Africa",
"agq_CM": "Aghem Cameroon",
"ak_GH": "Akan Ghana",
"am_ET": "Amharic Ethiopia",
"ar_001": "Arabic World",
"ar_AE": "Arabic United Arab Emirates",
"ar_BH": "Arabic Bahrain",
"ar_DJ": "Arabic Djibouti",
"ar_DZ": "Arabic Algeria",
"ar_EG": "Arabic Egypt",
"ar_EH": "Arabic Western Sahara",
"ar_ER": "Arabic Eritrea",
"ar_IL": "Arabic Israel",
"ar_IQ": "Arabic Iraq",
"ar_JO": "Arabic Jordan",
"ar_KM": "Arabic Comoros",
"ar_KW": "Arabic Kuwait",
"ar_LB": "Arabic Lebanon",
"ar_LY": "Arabic Libya",
"ar_MA": "Arabic Morocco",
"ar_MR": "Arabic Mauritania",
"ar_OM": "Arabic Oman",
"ar_PS": "Arabic Palestine",
"ar_QA": "Arabic Qatar",
"ar_SA": "Arabic Saudi Arabia",
"ar_SD": "Arabic Sudan",
"ar_SO": "Arabic Somalia",
"ar_SS": "Arabic South Sudan",
"ar_SY": "Arabic Syria",
"ar_TD": "Arabic Chad",
"ar_TN": "Arabic Tunisia",
"ar_YE": "Arabic Yemen",
"as_IN": "Assamese India",
"asa_TZ": "Asu Tanzania",
"az_AZ": "Azerbaijan",
"bas_CM": "Basaa Cameroon",
"be_BY": "Belarusian Belarus",
"bem_ZM": "Bemba Zambia",
"bez_TZ": "Bena Tanzania",
"bg_BG": "Bulgarian Bulgaria",
"bm_ML": "Bambara Mali",
"bn_BD": "Bengali Bangladesh",
"bn_IN": "Bengali India",
"bo_CN": "Tibetan China",
"bo_IN": "Tibetan India",
"br_FR": "Breton France",
"brx_IN": "Bodo India",
"bs_BA": "Bosnian Bosnia Herzegovina (Cyrillic/Latin)",
"ca_AD": "Catalan Andorra",
"ca_ES": "Catalan Spain",
"ca_FR": "Catalan France",
"ca_IT": "Catalan Italy",
"cgg_UG": "Chiga Uganda",
"chr_US": "Cherokee United States",
"cs_CZ": "Czech Czech Republic",
"cy_GB": "Welsh United Kingdom",
"da_DK": "Danish Denmark",
"da_GL": "Danish Greenland",
"dav_KE": "Taita Kenya",
"de_AT": "German Austria",
"de_BE": "German Belgium",
"de_CH": "German Switzerland",
"de_DE": "German Germany",
"de_LI": "German Liechtenstein",
"de_LU": "German Luxembourg",
"dje_NE": "Zarma Niger",
"dua_CM": "Duala Cameroon",
"dyo_SN": "Jola Fonyi Senegal",
"dz_BT": "Dzongkha Bhutan",
"ebu_KE": "Embu Kenya",
"ee_GH": "Ewe Ghana",
"ee_TG": "Ewe Togo",
"el_CY": "Greek Cyprus",
"el_GR": "Greek Greece",
"en_001": "English World",
"en_150": "English Europe",
"en_AG": "English Antigua Barbuda",
"en_AI": "English Anguilla",
"en_AS": "English American Samoa",
"en_AU": "English Australia",
"en_BB": "English Barbados",
"en_BE": "English Belgium",
"en_BM": "English Bermuda",
"en_BS": "English Bahamas",
"en_BW": "English Botswana",
"en_BZ": "English Belize",
"en_CA": "English Canada",
"en_CC": "English Cocos Keeling Islands",
"en_CK": "English Cook Islands",
"en_CM": "English Cameroon",
"en_CX": "English Christmas Island",
"en_DG": "English Diego Garcia",
"en_DM": "English Dominica",
"en_ER": "English Eritrea",
"en_FJ": "English Fiji",
"en_FK": "English Falkland Islands Islas Malvinas",
"en_FM": "English Micronesia",
"en_GB": "English United Kingdom",
"en_GD": "English Grenada",
"en_GG": "English Guernsey",
"en_GH": "English Ghana",
"en_GI": "English Gibraltar",
"en_GM": "English Gambia",
"en_GU": "English Guam",
"en_GY": "English Guyana",
"en_HK": "English Hong Kong",
"en_IE": "English Ireland",
"en_IM": "English Isle Of Man",
"en_IN": "English India",
"en_IO": "English British Indian Ocean Territory",
"en_JE": "English Jersey",
"en_JM": "English Jamaica",
"en_KE": "English Kenya",
"en_KI": "English Kiribati",
"en_KN": "English Saint Kitts Nevis",
"en_KY": "English Cayman Islands",
"en_LC": "English Saint Lucia",
"en_LR": "English Liberia",
"en_LS": "English Lesotho",
"en_MG": "English Madagascar",
"en_MH": "English Marshall Islands",
"en_MO": "English Macau",
"en_MP": "English Northern Mariana Islands",
"en_MS": "English Montserrat",
"en_MT": "English Malta",
"en_MU": "English Mauritius",
"en_MW": "English Malawi",
"en_NA": "English Namibia",
"en_NF": "English Norfolk Island",
"en_NG": "English Nigeria",
"en_NR": "English Nauru",
"en_NU": "English Niue",
"en_NZ": "English New Zealand",
"en_PG": "English Papua New Guinea",
"en_PH": "English Philippines",
"en_PK": "English Pakistan",
"en_PN": "English Pitcairn Islands",
"en_PR": "English Puerto Rico",
"en_PW": "English Palau",
"en_RW": "English Rwanda",
"en_SB": "English Solomon Islands",
"en_SC": "English Seychelles",
"en_SD": "English Sudan",
"en_SG": "English Singapore",
"en_SH": "English Saint Helena",
"en_SL": "English Sierra Leone",
"en_SS": "English South Sudan",
"en_SX": "English Sint Maarten",
"en_SZ": "English Swaziland",
"en_TC": "English Turks Caicos Islands",
"en_TK": "English Tokelau",
"en_TO": "English Tonga",
"en_TT": "English Trinidad Tobago",
"en_TV": "English Tuvalu",
"en_TZ": "English Tanzania",
"en_UG": "English Uganda",
"en_UM": "English Us Outlying Islands",
"en_US": "English United States",
"en_VC": "English St Vincent Grenadines",
"en_VG": "English British Virgin Islands",
"en_VI": "English Us Virgin Islands",
"en_VU": "English Vanuatu",
"en_WS": "English Samoa",
"en_ZA": "English South Africa",
"en_ZM": "English Zambia",
"en_ZW": "English Zimbabwe",
"es_419": "Spanish Latin America",
"es_AR": "Spanish Argentina",
"es_BO": "Spanish Bolivia",
"es_CL": "Spanish Chile",
"es_CO": "Spanish Colombia",
"es_CR": "Spanish Costa Rica",
"es_CU": "Spanish Cuba",
"es_DO": "Spanish Dominican Republic",
"es_EA": "Spanish Ceuta Melilla",
"es_EC": "Spanish Ecuador",
"es_ES": "Spanish Spain",
"es_GQ": "Spanish Equatorial Guinea",
"es_GT": "Spanish Guatemala",
"es_HN": "Spanish Honduras",
"es_IC": "Spanish Canary Islands",
"es_MX": "Spanish Mexico",
"es_NI": "Spanish Nicaragua",
"es_PA": "Spanish Panama",
"es_PE": "Spanish Peru",
"es_PH": "Spanish Philippines",
"es_PR": "Spanish Puerto Rico",
"es_PY": "Spanish Paraguay",
"es_SV": "Spanish El Salvador",
"es_US": "Spanish United States",
"es_UY": "Spanish Uruguay",
"es_VE": "Spanish Venezuela",
"et_EE": "Estonian Estonia",
"eu_ES": "Basque Spain",
"ewo_CM": "Ewondo Cameroon",
"fa_AF": "Persian Afghanistan",
"fa_IR": "Persian Iran",
"ff_SN": "Fulah Senegal",
"fi_FI": "Finnish Finland",
"fil_PH": "Filipino Philippines",
"fo_FO": "Faroese Faroe Islands",
"fr_BE": "French Belgium",
"fr_BF": "French Burkina Faso",
"fr_BI": "French Burundi",
"fr_BJ": "French Benin",
"fr_BL": "French Saint Bartelemy",
"fr_CA": "French Canada",
"fr_CD": "French Congo Drc",
"fr_CF": "French Central African Republic",
"fr_CG": "French Congo Republic",
"fr_CH": "French Switzerland",
"fr_CI": "French Cote D Ivoire",
"fr_CM": "French Cameroon",
"fr_DJ": "French Djibouti",
"fr_DZ": "French Algeria",
"fr_FR": "French France",
"fr_GA": "French Gabon",
"fr_GF": "French French Guiana",
"fr_GN": "French Guinea",
"fr_GP": "French Guadeloupe",
"fr_GQ": "French Equatorial Guinea",
"fr_HT": "French Haiti",
"fr_KM": "French Comoros",
"fr_LU": "French Luxembourg",
"fr_MA": "French Morocco",
"fr_MC": "French Monaco",
"fr_MF": "French Saint Martin",
"fr_MG": "French Madagascar",
"fr_ML": "French Mali",
"fr_MQ": "French Martinique",
"fr_MR": "French Mauritania",
"fr_MU": "French Mauritius",
"fr_NC": "French New Caledonia",
"fr_NE": "French Niger",
"fr_PF": "French French Polynesia",
"fr_PM": "French Saint Pierre Miquelon",
"fr_RE": "French Reunion",
"fr_RW": "French Rwanda",
"fr_SC": "French Seychelles",
"fr_SN": "French Senegal",
"fr_SY": "French Syria",
"fr_TD": "French Chad",
"fr_TG": "French Togo",
"fr_TN": "French Tunisia",
"fr_VU": "French Vanuatu",
"fr_WF": "French Wallis Futuna",
"fr_YT": "French Mayotte",
"ga_IE": "Irish Ireland",
"gl_ES": "Galician Spain",
"gsw_CH": "Swiss German Switzerland",
"gsw_LI": "Swiss German Liechtenstein",
"gu_IN": "Gujarati India",
"guz_KE": "Gusii Kenya",
"gv_IM": "Manx Isle Of Man",
"ha_GH": "Hausa Latin Ghana",
"ha_NE": "Hausa Latin Niger",
"ha_NG": "Hausa Latin Nigeria",
"haw_US": "Hawaiian United States",
"hi_IN": "Hindi India",
"hr_BA": "Croatian Bosnia Herzegovina",
"hr_HR": "Croatian Croatia",
"hu_HU": "Hungarian Hungary",
"hy_AM": "Armenian Armenia",
"ig_NG": "Igbo Nigeria",
"ii_CN": "Sichuan Yi China",
"in_ID": "Indonesian Indonesia",
"is_IS": "Icelandic Iceland",
"it_CH": "Italian Switzerland",
"it_IT": "Italian Italy",
"it_SM": "Italian San Marino",
"iw_IL": "Hebrew Israel",
"ja_JP": "Japanese Japan",
"jgo_CM": "Ngomba Cameroon",
"jmc_TZ": "Machame Tanzania",
"ka_GE": "Georgian Georgia",
"kab_DZ": "Kabyle Algeria",
"kam_KE": "Kamba Kenya",
"kde_TZ": "Makonde Tanzania",
"kea_CV": "Kabuverdianu Cape Verde",
"khq_ML": "Koyra Chiini Mali",
"ki_KE": "Kikuyu Kenya",
"kk_KZ": "Kazakh Cyrillic Kazakhstan",
"kkj_CM": "Kako Cameroon",
"kl_GL": "Kalaallisut Greenland",
"kln_KE": "Kalenjin Kenya",
"km_KH": "Khmer Cambodia",
"kn_IN": "Kannada India",
"ko_KP": "Korean North Korea",
"ko_KR": "Korean South Korea",
"kok_IN": "Konkani India",
"ks_IN": "Kashmiri Arabic India",
"ksb_TZ": "Shambala Tanzania",
"ksf_CM": "Bafia Cameroon",
"kw_GB": "Cornish United Kingdom",
"ky_KG": "Kyrgyz Cyrillic Kyrgyzstan",
"lag_TZ": "Langi Tanzania",
"lg_UG": "Ganda Uganda",
"lkt_US": "Lakota United States",
"ln_AO": "Lingala Angola",
"ln_CD": "Lingala Congo Drc",
"ln_CF": "Lingala Central African Republic",
"ln_CG": "Lingala Congo Republic",
"lo_LA": "Lao Laos",
"lt_LT": "Lithuanian Lithuania",
"lu_CD": "Luba Katanga Congo Drc",
"luo_KE": "Luo Kenya",
"luy_KE": "Luyia Kenya",
"lv_LV": "Latvian Latvia",
"mas_KE": "Masai Kenya",
"mas_TZ": "Masai Tanzania",
"mer_KE": "Meru Kenya",
"mfe_MU": "Morisyen Mauritius",
"mg_MG": "Malagasy Madagascar",
"mgh_MZ": "Makhuwa Meetto Mozambique",
"mgo_CM": "Meta Cameroon",
"mk_MK": "Macedonian Macedonia Fyrom",
"ml_IN": "Malayalam India",
"mn_MN": "Mongolian Cyrillic Mongolia",
"mr_IN": "Marathi India",
"ms_BN": "Malay Latin Brunei",
"ms_MY": "Malay Latin Malaysia",
"ms_SG": "Malay Latin Singapore",
"mt_MT": "Maltese Malta",
"mua_CM": "Mundang Cameroon",
"my_MM": "Burmese Myanmar Burma",
"naq_NA": "Nama Namibia",
"nb_NO": "Norwegian Bokmal Norway",
"nb_SJ": "Norwegian Bokmal Svalbard Jan Mayen",
"nd_ZW": "North Ndebele Zimbabwe",
"ne_IN": "Nepali India",
"ne_NP": "Nepali Nepal",
"nl_AW": "Dutch Aruba",
"nl_BE": "Dutch Belgium",
"nl_BQ": "Dutch Caribbean Netherlands",
"nl_CW": "Dutch Curacao",
"nl_NL": "Dutch Netherlands",
"nl_SR": "Dutch Suriname",
"nl_SX": "Dutch Sint Maarten",
"nmg_CM": "Kwasio Cameroon",
"nn_NO": "Norwegian Nynorsk Norway",
"nnh_CM": "Ngiemboon Cameroon",
"nus_SD": "Nuer Sudan",
"nyn_UG": "Nyankole Uganda",
"om_ET": "Oromo Ethiopia",
"om_KE": "Oromo Kenya",
"or_IN": "Oriya India",
"pa_IN": "Punjabi Gurmukhi India",
"pa_PK": "Punjabi Arabic Pakistan",
"pl_PL": "Polish Poland",
"ps_AF": "Pashto Afghanistan",
"pt_AO": "Portuguese Angola",
"pt_BR": "Portuguese Brazil",
"pt_CV": "Portuguese Cape Verde",
"pt_GW": "Portuguese Guinea Bissau",
"pt_MO": "Portuguese Macau",
"pt_MZ": "Portuguese Mozambique",
"pt_PT": "Portuguese Portugal",
"pt_ST": "Portuguese Sao Tome Principe",
"pt_TL": "Portuguese Timor Leste",
"rm_CH": "Romansh Switzerland",
"rn_BI": "Rundi Burundi",
"ro_MD": "Romanian Moldova",
"ro_RO": "Romanian Romania",
"rof_TZ": "Rombo Tanzania",
"ru_BY": "Russian Belarus",
"ru_KG": "Russian Kyrgyzstan",
"ru_KZ": "Russian Kazakhstan",
"ru_MD": "Russian Moldova",
"ru_RU": "Russian Russia",
"ru_UA": "Russian Ukraine",
"rw_RW": "Kinyarwanda Rwanda",
"rwk_TZ": "Rwa Tanzania",
"saq_KE": "Samburu Kenya",
"sbp_TZ": "Sangu Tanzania",
"seh_MZ": "Sena Mozambique",
"ses_ML": "Koyraboro Senni Mali",
"sg_CF": "Sango Central African Republic",
"shi_MA": "Tachelhit Morocco (Tifinagh/Latin)",
"si_LK": "Sinhala Sri Lanka",
"sk_SK": "Slovak Slovakia",
"sl_SI": "Slovenian Slovenia",
"sn_ZW": "Shona Zimbabwe",
"so_DJ": "Somali Djibouti",
"so_ET": "Somali Ethiopia",
"so_KE": "Somali Kenya",
"so_SO": "Somali Somalia",
"sq_AL": "Albanian Albania",
"sq_MK": "Albanian Macedonia Fyrom",
"sq_XK": "Albanian Kosovo",
"sr_BA": "Serbian Bosnia Herzegovina (Cyrillic/Latin)",
"sr_ME": "Serbian Montenegro (Cyrillic/Latin)",
"sr_RS": "Serbian Serbia (Cyrillic/Latin)",
"sr_XK": "Serbian Kosovo (Cyrillic/Latin)",
"sv_AX": "Swedish Aland Islands",
"sv_FI": "Swedish Finland",
"sv_SE": "Swedish Sweden",
"sw_KE": "Swahili Kenya",
"sw_TZ": "Swahili Tanzania",
"sw_UG": "Swahili Uganda",
"swc_CD": "Congo Swahili Congo Drc",
"ta_IN": "Tamil India",
"ta_LK": "Tamil Sri Lanka",
"ta_MY": "Tamil Malaysia",
"ta_SG": "Tamil Singapore",
"te_IN": "Telugu India",
"teo_KE": "Teso Kenya",
"teo_UG": "Teso Uganda",
"th_TH": "Thai Thailand",
"ti_ER": "Tigrinya Eritrea",
"ti_ET": "Tigrinya Ethiopia",
"to_TO": "Tongan Tonga",
"tr_CY": "Turkish Cyprus",
"tr_TR": "Turkish Turkey",
"twq_NE": "Tasawaq Niger",
"tzm_MA": "Central Atlas Tamazight Latin Morocco",
"ug_CN": "Uyghur Arabic China",
"uk_UA": "Ukrainian Ukraine",
"ur_IN": "Urdu India",
"ur_PK": "Urdu Pakistan",
"uz_AF": "Uzbek Arabic Afghanistan",
"uz_UZ": "Uzbek Uzbekistan (Cyrillic/Latin)",
"vai_LR": "Vai Latin Liberia (Vai/Latin)",
"vi_VN": "Vietnamese Vietnam",
"vun_TZ": "Vunjo Tanzania",
"xog_UG": "Soga Uganda",
"yav_CM": "Yangben Cameroon",
"yo_BJ": "Yoruba Benin",
"yo_NG": "Yoruba Nigeria",
"zgh_MA": "Standard Moroccan Tamazight Morocco",
"zh_CN": "Chinese Simplified Han China",
"zh_HK": "Chinese Han Hong Kong (Simplified+Traditional)",
"zh_MO": "Chinese Han Macau (Simplified+Traditional)",
"zh_SG": "Chinese Simplified Han Singapore",
"zh_TW": "Chinese Traditional Han Taiwan",
"zu_ZA": "Zulu South Africa"
}