139 lines
2.4 KiB
JavaScript
139 lines
2.4 KiB
JavaScript
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/*!
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* parseurl
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* Copyright(c) 2014 Jonathan Ong
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* Copyright(c) 2014 Douglas Christopher Wilson
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* MIT Licensed
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*/
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'use strict'
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/**
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* Module dependencies.
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*/
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var url = require('url')
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var parse = url.parse
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var Url = url.Url
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/**
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* Pattern for a simple path case.
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* See: https://github.com/joyent/node/pull/7878
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*/
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var simplePathRegExp = /^(\/\/?(?!\/)[^\?#\s]*)(\?[^#\s]*)?$/
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/**
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* Exports.
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*/
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module.exports = parseurl
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module.exports.original = originalurl
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/**
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* Parse the `req` url with memoization.
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*
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* @param {ServerRequest} req
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* @return {Object}
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* @api public
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*/
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function parseurl(req) {
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var url = req.url
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if (url === undefined) {
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// URL is undefined
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return undefined
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}
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var parsed = req._parsedUrl
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if (fresh(url, parsed)) {
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// Return cached URL parse
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return parsed
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}
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// Parse the URL
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parsed = fastparse(url)
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parsed._raw = url
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return req._parsedUrl = parsed
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};
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/**
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* Parse the `req` original url with fallback and memoization.
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*
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* @param {ServerRequest} req
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* @return {Object}
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* @api public
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*/
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function originalurl(req) {
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var url = req.originalUrl
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if (typeof url !== 'string') {
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// Fallback
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return parseurl(req)
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}
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var parsed = req._parsedOriginalUrl
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if (fresh(url, parsed)) {
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// Return cached URL parse
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return parsed
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}
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// Parse the URL
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parsed = fastparse(url)
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parsed._raw = url
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return req._parsedOriginalUrl = parsed
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};
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/**
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* Parse the `str` url with fast-path short-cut.
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*
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* @param {string} str
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* @return {Object}
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* @api private
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*/
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function fastparse(str) {
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// Try fast path regexp
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// See: https://github.com/joyent/node/pull/7878
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var simplePath = typeof str === 'string' && simplePathRegExp.exec(str)
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// Construct simple URL
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if (simplePath) {
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var pathname = simplePath[1]
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var search = simplePath[2] || null
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var url = Url !== undefined
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? new Url()
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: {}
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url.path = str
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url.href = str
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url.pathname = pathname
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url.search = search
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url.query = search && search.substr(1)
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return url
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}
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return parse(str)
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}
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/**
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* Determine if parsed is still fresh for url.
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*
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* @param {string} url
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* @param {object} parsedUrl
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* @return {boolean}
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* @api private
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*/
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function fresh(url, parsedUrl) {
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return typeof parsedUrl === 'object'
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&& parsedUrl !== null
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&& (Url === undefined || parsedUrl instanceof Url)
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&& parsedUrl._raw === url
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}
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