ce4c83ff
 wxy
初始提交
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var _ = require('lodash')
var url = require('url')
var isGlob = require('is-glob')
var micromatch = require('micromatch')
var ERRORS = require('./errors')
module.exports = {
match: matchContext
}
function matchContext (context, uri, req) {
// single path
if (isStringPath(context)) {
return matchSingleStringPath(context, uri)
}
// single glob path
if (isGlobPath(context)) {
return matchSingleGlobPath(context, uri)
}
// multi path
if (Array.isArray(context)) {
if (context.every(isStringPath)) {
return matchMultiPath(context, uri)
}
if (context.every(isGlobPath)) {
return matchMultiGlobPath(context, uri)
}
throw new Error(ERRORS.ERR_CONTEXT_MATCHER_INVALID_ARRAY)
}
// custom matching
if (_.isFunction(context)) {
var pathname = getUrlPathName(uri)
return context(pathname, req)
}
throw new Error(ERRORS.ERR_CONTEXT_MATCHER_GENERIC)
}
/**
* @param {String} context '/api'
* @param {String} uri 'http://example.org/api/b/c/d.html'
* @return {Boolean}
*/
function matchSingleStringPath (context, uri) {
var pathname = getUrlPathName(uri)
return pathname.indexOf(context) === 0
}
function matchSingleGlobPath (pattern, uri) {
var pathname = getUrlPathName(uri)
var matches = micromatch(pathname, pattern)
return matches && (matches.length > 0)
}
function matchMultiGlobPath (patternList, uri) {
return matchSingleGlobPath(patternList, uri)
}
/**
* @param {String} contextList ['/api', '/ajax']
* @param {String} uri 'http://example.org/api/b/c/d.html'
* @return {Boolean}
*/
function matchMultiPath (contextList, uri) {
for (var i = 0; i < contextList.length; i++) {
var context = contextList[i]
if (matchSingleStringPath(context, uri)) {
return true
}
}
return false
}
/**
* Parses URI and returns RFC 3986 path
*
* @param {String} uri from req.url
* @return {String} RFC 3986 path
*/
function getUrlPathName (uri) {
return uri && url.parse(uri).pathname
}
function isStringPath (context) {
return _.isString(context) && !isGlob(context)
}
function isGlobPath (context) {
return isGlob(context)
}
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