53 lines
1.1 KiB
JavaScript
Executable File
53 lines
1.1 KiB
JavaScript
Executable File
const UID_DIGITS = 12;
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const MINI_UID_REGEX = /\.uid\.[a-z0-9]{6,}$/;
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const ID_SANITY_REGEX = /^:([a-z0-9]+\.)*[a-z0-9_]+$/;
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/**
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* Sanity check a string to see if it is a potential id.
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*
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* @param {string} id
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* @returns {boolean}
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*/
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export function isIdSane(id) {
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if (typeof id !== "string") {
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return false;
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}
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if (id.length < 2) {
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return false;
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}
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return ID_SANITY_REGEX.test(id);
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}
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/**
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* @returns {string} crypto-unsafe pseudo random number.
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*
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* Generate a random number, convert it to base36, and return it as a string with 7-8 characters.
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*/
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export function miniUid() {
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// we use 12 digits, but we could go up to 16
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return Number(Math.random().toFixed(UID_DIGITS).substring(2)).toString(36);
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}
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/**
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* Generate an id from a string
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* @param {string[]} str
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*/
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export function appendMiniUid(str) {
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return str + ".uid." + miniUid();
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}
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/**
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* Does a given string end with ".uid.23khtasdz", etc.
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*
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* @param {string} str
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*/
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export function endsWithMiniUid(str) {
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return MINI_UID_REGEX.test(str);
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}
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export function appendOrReplaceMiniUid(str) {
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return appendMiniUid(str.replace(MINI_UID_REGEX, ""));
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}
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