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powahroot/Shared/Pathspec.mjs

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JavaScript

/**
* Converts a path specification into a regular expression.
* Originally from the server-side sibling of this (client-side) router.
* @param {string} pathspec The path specification to convert.
* @param {Boolean} verbose Optional. Whether to be verbose and log some stuff to the console. Default: false
* @return {RegExp} The resulting regular expression
*/
export default function pathspec_to_regex(pathspec, verbose = false) {
if(pathspec == "*") // Support wildcards
return { regex: /^/, tokens: [] };
let tokens = [];
let regex = new RegExp("^" + pathspec.replace(/::?([a-zA-Z0-9\-_]+)/g, (substr/*, index, template (not used)*/) => {
tokens.push(substr.replace(/:/g, ""));
// FUTURE: We could add optional param support here too
if(substr.startsWith("::"))
return `(.+)`;
else
return `([^\/]+)`;
}) + "$", "i");
if(verbose) console.info("[router/verbose] Created regex", regex);
return { regex, tokens };
}