Add match-route

libs/badgen-serve.ts

@@ -1,8 +1,8 @@
 import url from 'url'
-import PathParser from 'path-parser'
 
 import serve404 from './serve-404'
 import serveBadge from './serve-badge'
+import matchRoute from './match-route'
 
 import { BadgenParams } from './types'
 
@@ -22,7 +22,7 @@ export function badgenServe (handlers: BadgenServeHandlers): Function {
     // Lookup handler
     let matchedArgs
     const matchedScheme = Object.keys(handlers).find(scheme => {
-      matchedArgs = new PathParser(scheme).test(pathname)
+      matchedArgs = matchRoute(scheme, decodeURI(pathname))
       return matchedArgs !== null
     })
 

libs/match-route.ts

@@ -0,0 +1,52 @@
+type RouteArgs = null | {
+  [key: string]: string
+}
+
+function matchRoute(pattern: string, path: string): RouteArgs {
+  const parsedArgs: RouteArgs = {}
+
+  const PATTERN_SEGMENT_REG = /\/(:)?([\w-]+)([*?+]){0,1}(?:<(.+)>)?/g
+  const PATH_SEGMENT_REG = /\/([^/]+)/g
+
+  let parsedPatternSegment = PATTERN_SEGMENT_REG.exec(pattern)
+  let parsedPathSegment = PATH_SEGMENT_REG.exec(path)
+
+  while (parsedPatternSegment !== null) {
+    const [ rawPatternSegment, type, name, flag, reg ] = parsedPatternSegment
+
+    if (parsedPathSegment === null) {
+      return flag === '?' ? parsedArgs : null
+    }
+
+    const [ rawPathSegment, value ] = parsedPathSegment
+
+    switch (type) {
+      case undefined: // literal match
+        if (rawPatternSegment !== rawPathSegment) {
+          return null
+        }
+        break
+      case ':': // named segment
+        if (reg) {
+          if (new RegExp(`^${reg}$`).test(value)) {
+            parsedArgs[name] = value
+          } else {
+            return null
+          }
+        } else {
+          parsedArgs[name] = value
+        }
+    }
+
+    parsedPatternSegment = PATTERN_SEGMENT_REG.exec(pattern)
+    parsedPathSegment = PATH_SEGMENT_REG.exec(path)
+  }
+
+  if (parsedPathSegment === null) {
+    return parsedArgs
+  } else {
+    return null
+  }
+}
+
+export default matchRoute

test/match-route.unit.ts

@@ -0,0 +1,24 @@
+import matchRoute from '../libs/match-route'
+
+const matcher = route => path => {
+  const result = matchRoute(route, path)
+  console.log('\n', route, '\n', path, '\n', result)
+  return result
+}
+
+const route = '/github/:topic<stars|forks>/:owner/:repo/:chanel?/:more?'
+const parsed = [
+  '/github/stars/amio/',
+  '/github/eiyou/amio/badgen',
+  '/github/stars/amio/badgen',
+  '/github/stars/amio/badgen',
+  '/github/stars/amio/badgen/master',
+  '/github/stars/amio/badgen/master/',
+  '/github/stars/amio/badgen/master/more',
+].map(matcher(route))
+
+const route2 = '/user/:id<\\d+>'
+const parsed2 = [
+  '/user/123',
+  '/user/sd'
+].map(matcher(route2))