95 lines
2.1 KiB
JavaScript
95 lines
2.1 KiB
JavaScript
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var _ = require('lodash')
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var url = require('url')
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var isGlob = require('is-glob')
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var micromatch = require('micromatch')
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var ERRORS = require('./errors')
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module.exports = {
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match: matchContext
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}
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function matchContext(context, uri, req) {
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// single path
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if (isStringPath(context)) {
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return matchSingleStringPath(context, uri)
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}
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// single glob path
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if (isGlobPath(context)) {
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return matchSingleGlobPath(context, uri)
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}
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// multi path
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if (Array.isArray(context)) {
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if (context.every(isStringPath)) {
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return matchMultiPath(context, uri)
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}
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if (context.every(isGlobPath)) {
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return matchMultiGlobPath(context, uri)
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}
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throw new Error(ERRORS.ERR_CONTEXT_MATCHER_INVALID_ARRAY)
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}
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// custom matching
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if (_.isFunction(context)) {
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var pathname = getUrlPathName(uri)
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return context(pathname, req)
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}
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throw new Error(ERRORS.ERR_CONTEXT_MATCHER_GENERIC)
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}
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/**
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* @param {String} context '/api'
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* @param {String} uri 'http://example.org/api/b/c/d.html'
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* @return {Boolean}
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*/
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function matchSingleStringPath(context, uri) {
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var pathname = getUrlPathName(uri)
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return pathname.indexOf(context) === 0
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}
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function matchSingleGlobPath(pattern, uri) {
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var pathname = getUrlPathName(uri)
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var matches = micromatch(pathname, pattern)
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return matches && matches.length > 0
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}
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function matchMultiGlobPath(patternList, uri) {
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return matchSingleGlobPath(patternList, uri)
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}
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/**
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* @param {String} contextList ['/api', '/ajax']
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* @param {String} uri 'http://example.org/api/b/c/d.html'
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* @return {Boolean}
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*/
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function matchMultiPath(contextList, uri) {
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for (var i = 0; i < contextList.length; i++) {
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var context = contextList[i]
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if (matchSingleStringPath(context, uri)) {
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return true
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}
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}
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return false
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}
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/**
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* Parses URI and returns RFC 3986 path
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*
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* @param {String} uri from req.url
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* @return {String} RFC 3986 path
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*/
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function getUrlPathName(uri) {
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return uri && url.parse(uri).pathname
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}
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function isStringPath(context) {
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return _.isString(context) && !isGlob(context)
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}
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function isGlobPath(context) {
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return isGlob(context)
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}
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