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index.js
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index.js
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const data = require('./data.json');
function noop(err, value) {
if (err) return err;
return value;
}
function isFunction(obj) {
return typeof obj === 'function';
}
exports.getCountries = function () {
return data.countries;
};
exports.getLanguages = function () {
return data.languages;
};
exports.getLanguageFamilies = function () {
return data.languageFamilies;
};
exports.getLanguageCodes = function (codeType, cb) {
const { languages } = data;
const cTypeNames = ['iso639_1', 'iso639_2en', 'iso639_3'];
const codes = [];
cb = cb || (isFunction(codeType) ? codeType : noop);
codeType = codeType && !isFunction(codeType) ? codeType : 1;
codeType = Math.floor(Number(codeType));
if (Number.isNaN(codeType) || codeType < 1 || codeType > cTypeNames.length) {
return cb(
'Wrong language code type provided. Valid values: 1, 2, 3 for iso639-1, iso639-2, iso639-3 respectively'
);
}
const cType = cTypeNames[codeType - 1];
for (const language of languages) {
if (language[cType]) codes.push(language[cType]);
}
return cb(null, codes);
};
exports.getCountryCodes = function (codeType, cb) {
const { countries } = data;
const cTypeNames = ['numCode', 'code_2', 'code_3'];
const codes = [];
cb = cb || (isFunction(codeType) ? codeType : noop);
codeType = codeType && !isFunction(codeType) ? codeType : 2;
codeType = Math.floor(Number(codeType));
if (Number.isNaN(codeType) || codeType < 1 || codeType > cTypeNames.length) {
return cb(
'Wrong country code type provided. Valid values: 1, 2, 3 for numeric code, alpha-2, alpha-3 respectively'
);
}
const cType = cTypeNames[codeType - 1];
for (const country of countries) {
if (country[cType]) codes.push(country[cType]);
}
return cb(null, codes);
};
exports.languageCodeExists = function (code) {
let codes;
let exists;
if (!code) return false;
code = code.toLowerCase();
for (let i = 1; i < 4; i++) {
codes = exports.getLanguageCodes(i);
exists = codes.includes(code);
if (exists) break;
}
return exists;
};
exports.countryCodeExists = function (code) {
let codes;
let exists;
if (!code) return false;
code = code.toUpperCase();
for (let i = 1; i < 4; i++) {
codes = exports.getCountryCodes(i);
exists = codes.includes(code);
if (exists) break;
}
return exists;
};
exports.getCountry = function (code, cb, noLangInfo) {
const { countries } = data;
let country;
let codeFld;
let langs;
if (typeof code !== 'string') {
return cb('No country code provided');
}
cb = cb || noop;
code = code.toUpperCase();
if (code.length === 2) {
codeFld = 'code_2';
} else if (code.length === 3) {
codeFld = 'code_3';
}
if (codeFld) {
country = countries.find((c) => {
return c[codeFld] === code;
});
if (!country) {
return cb('There is no country with code "' + code + '"');
}
country = { ...country };
if (!noLangInfo) {
langs = country.languages;
country.languages = [];
if (langs) {
for (const l of langs) {
country.languages.push(exports.getLanguage(l, null, true));
}
}
}
return cb(null, country);
}
return cb('Wrong type of country code provided');
};
exports.getLanguage = function (code, cb, noCountryInfo) {
const { languages } = data;
let language;
const codeFld = [];
let countrs;
cb = cb || noop;
if (typeof code !== 'string') {
return cb('No language code provided');
}
code = code.toLowerCase();
if (code.length === 2) {
codeFld.push('iso639_1');
} else if (code.length === 3) {
codeFld.push('iso639_2', 'iso639_2en', 'iso639_3');
}
if (codeFld) {
for (const element of codeFld) {
language = languages.find((l) => {
return l[element] === code;
});
if (language) break;
}
if (!language) {
return cb('There is no language with code "' + code + '"');
}
language = { ...language };
if (!noCountryInfo) {
countrs = language.countries;
language.countries = [];
if (countrs)
for (const c of countrs) {
language.countries.push(exports.getCountry(c, null, true));
}
}
return cb(null, language);
}
return cb('Wrong type of language code provided');
};
exports.getCountryLanguages = function (code, cb) {
const codes = [];
cb = cb || noop;
exports.getCountry(code, function (err, country) {
if (err) return cb(err);
for (const l of country.languages) {
codes.push({
iso639_1: l.iso639_1,
iso639_2: l.iso639_2en,
iso639_3: l.iso639_3
});
}
});
return cb(null, codes);
};
exports.getLanguageCountries = function (code, cb) {
const codes = [];
cb = cb || noop;
exports.getLanguage(code, function (err, language) {
if (err) return cb(err);
for (const c of language.countries) {
codes.push({
code_2: c.code_2,
code_3: c.code_3,
numCode: c.numCode
});
}
});
return cb(null, codes);
};
exports.getCountryMsLocales = function (code, cb) {
let codes = [];
cb = cb || noop;
exports.getCountry(code, function (err, country) {
if (err) return cb(err);
codes = country.langCultureMs;
});
return cb(null, codes);
};
exports.getLanguageMsLocales = function (code, cb) {
let codes = [];
cb = cb || noop;
exports.getLanguage(code, function (err, language) {
if (err) return cb(err);
codes = language.langCultureMs;
});
return cb(null, codes);
};
exports.getLanguageFamilyMembers = function (family, cb) {
const { languages } = data;
const ret = [];
cb = cb || noop;
if (typeof family !== 'string') {
return cb('No language family provided');
}
family = family.toLowerCase();
const check = data.languageFamilies.find((f) => {
return f.toLowerCase() === family;
});
if (!check) {
return cb('There is no language family "' + family + '"');
}
const members = languages.filter((l) => {
return l.family.toLowerCase() === family;
});
for (const l of members) {
ret.push(exports.getLanguage(l.iso639_3));
}
return cb(null, ret);
};
exports.getLocales = function (mode) {
const { locales } = data;
const ret = [];
let loc2;
for (const loc of locales) {
loc2 = loc[2] ? '-' + loc[2] : '';
if (mode) {
ret.push(loc[0] + loc2 + '-' + loc[1]);
} else {
ret.push(loc[0] + '-' + loc[1] + loc2);
}
}
return ret;
};