/
index.js
50 lines (41 loc) · 1.02 KB
/
index.js
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import * as qs from 'querystring';
/**
* @typedef ParsedURL
* @type {import('.').ParsedURL}
*/
/**
* @typedef Request
* @property {string} url
* @property {boolean} _decoded
* @property {ParsedURL} _parsedUrl
*/
/**
* @param {Request} req
* @param {boolean} [toDecode]
* @returns {ParsedURL|void}
*/
export function parse(req, toDecode) {
let raw = req.url;
if (raw == null) return;
let prev=req._parsedUrl, encoded=!req._decoded;
if (prev && prev.raw === raw && !toDecode === encoded) return prev;
let pathname=raw, search='', query;
if (raw.length > 1) {
let idx = raw.indexOf('?', 1);
if (idx !== -1) {
search = raw.substring(idx);
pathname = raw.substring(0, idx);
if (search.length > 1) {
query = qs.parse(search.substring(1));
}
}
if (!!toDecode && encoded) {
req._decoded = true;
if (pathname.indexOf('%') !== -1) {
try { pathname = decodeURIComponent(pathname) }
catch (e) { /* URI malformed */ }
}
}
}
return req._parsedUrl = { pathname, search, query, raw };
}