54 lines
1.7 KiB
JavaScript
54 lines
1.7 KiB
JavaScript
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/**
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* Client-side mirror of storage.Slugify in the Go engine, used to preview the
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* filename a new title will produce before the request is sent. The backend
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* remains authoritative and re-normalises every slug it receives.
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*/
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const LATIN_FOLD = {
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á: 'a', à: 'a', â: 'a', ä: 'a', ã: 'a', å: 'a', ā: 'a', ă: 'a', ą: 'a',
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ç: 'c', ć: 'c', č: 'c', ĉ: 'c', ċ: 'c',
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ď: 'd', đ: 'd',
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é: 'e', è: 'e', ê: 'e', ë: 'e', ē: 'e', ė: 'e', ę: 'e', ě: 'e',
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ğ: 'g', ĝ: 'g', ġ: 'g', ģ: 'g',
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í: 'i', ì: 'i', î: 'i', ï: 'i', ī: 'i', į: 'i', ı: 'i',
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ĵ: 'j', ķ: 'k', ł: 'l', ľ: 'l', ĺ: 'l',
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ñ: 'n', ń: 'n', ň: 'n',
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ó: 'o', ò: 'o', ô: 'o', ö: 'o', õ: 'o', ø: 'o', ō: 'o', ő: 'o',
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ŕ: 'r', ř: 'r',
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ś: 's', š: 's', ş: 's', ș: 's', ß: 's', þ: 't', ť: 't',
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ú: 'u', ù: 'u', û: 'u', ü: 'u', ū: 'u', ů: 'u', ű: 'u',
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ŵ: 'w', ý: 'y', ÿ: 'y', ŷ: 'y',
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ź: 'z', ż: 'z', ž: 'z',
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};
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const MAX_SLUG_LEN = 120;
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export function slugify(title) {
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let out = '';
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let pendingSeparator = true;
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for (const raw of (title ?? '').toLowerCase()) {
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const char = LATIN_FOLD[raw] ?? raw;
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if (/[a-z0-9]/.test(char)) {
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out += char;
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pendingSeparator = false;
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} else if (!pendingSeparator) {
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out += '-';
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pendingSeparator = true;
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}
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}
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let slug = out.replace(/^-+|-+$/g, '');
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if ([...slug].length > MAX_SLUG_LEN) {
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slug = [...slug].slice(0, MAX_SLUG_LEN).join('').replace(/-+$/, '');
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}
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return slug;
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}
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/** Render a slug back into a human title: core-service-api -> Core Service Api. */
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export function titleize(slug) {
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return (slug ?? '')
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.split(/[-_]/)
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.filter(Boolean)
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.map((word) => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase())
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.join(' ');
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}
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