@atproto/common-web
Version:
Shared web-platform-friendly code for atproto libraries
84 lines • 3.9 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.validateLanguage = exports.parseLanguage = exports.b64UrlToUtf8 = exports.utf8ToB64Url = exports.graphemeLen = exports.utf8Len = void 0;
const graphemer_1 = __importDefault(require("graphemer"));
const ui8 = __importStar(require("uint8arrays"));
// counts the number of bytes in a utf8 string
const utf8Len = (str) => {
return new TextEncoder().encode(str).byteLength;
};
exports.utf8Len = utf8Len;
// counts the number of graphemes (user-displayed characters) in a string
const graphemeLen = (str) => {
const splitter = new graphemer_1.default();
return splitter.countGraphemes(str);
};
exports.graphemeLen = graphemeLen;
const utf8ToB64Url = (utf8) => {
return ui8.toString(ui8.fromString(utf8, 'utf8'), 'base64url');
};
exports.utf8ToB64Url = utf8ToB64Url;
const b64UrlToUtf8 = (b64) => {
return ui8.toString(ui8.fromString(b64, 'base64url'), 'utf8');
};
exports.b64UrlToUtf8 = b64UrlToUtf8;
const parseLanguage = (langTag) => {
const parsed = langTag.match(bcp47Regexp);
if (!parsed?.groups)
return null;
const parts = parsed.groups;
return {
grandfathered: parts.grandfathered,
language: parts.language,
extlang: parts.extlang,
script: parts.script,
region: parts.region,
variant: parts.variant,
extension: parts.extension,
privateUse: parts.privateUseA || parts.privateUseB,
};
};
exports.parseLanguage = parseLanguage;
const validateLanguage = (langTag) => {
return bcp47Regexp.test(langTag);
};
exports.validateLanguage = validateLanguage;
// Validates well-formed BCP 47 syntax: https://www.rfc-editor.org/rfc/rfc5646.html#section-2.1
const bcp47Regexp = /^((?<grandfathered>(en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE)|(art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|zh-min|zh-min-nan|zh-xiang))|((?<language>([A-Za-z]{2,3}(-(?<extlang>[A-Za-z]{3}(-[A-Za-z]{3}){0,2}))?)|[A-Za-z]{4}|[A-Za-z]{5,8})(-(?<script>[A-Za-z]{4}))?(-(?<region>[A-Za-z]{2}|[0-9]{3}))?(-(?<variant>[A-Za-z0-9]{5,8}|[0-9][A-Za-z0-9]{3}))*(-(?<extension>[0-9A-WY-Za-wy-z](-[A-Za-z0-9]{2,8})+))*(-(?<privateUseA>x(-[A-Za-z0-9]{1,8})+))?)|(?<privateUseB>x(-[A-Za-z0-9]{1,8})+))$/;
//# sourceMappingURL=strings.js.map