refactor(core): add router

src/core/route/index.js

@@ -1,17 +1,42 @@
-import { ensureSlash } from './hash'
+import { normalize, parse } from './hash'
+import { getBasePath, cleanPath } from './util'
+import { on } from '../util/dom'
+
+function getAlias (path, alias) {
+  if (alias[path]) return getAlias(alias[path], alias)
+  return path
+}
+
+function getFileName (path) {
+  return /\.(md|html)$/g.test(path)
+    ? path
+    : /\/$/g.test(path)
+      ? `${path}README.md`
+      : `${path}.md`
+}
 
 export function routeMixin (Docsify) {
-  Docsify.prototype.$route = {
-    query: location.query || {},
-    path: location.path || '/',
-    base: ''
+  Docsify.prototype.route = {}
+  Docsify.prototype.$getFile = function (path) {
+    const { config } = this
+    const base = getBasePath(config.basePath)
+
+    path = getAlias(path, config.alias)
+    path = getFileName(path)
+    path = path === '/README.md' ? ('/' + config.homepage || path) : path
+    path = cleanPath(base + path)
+
+    return path
   }
 }
 
 export function initRoute (vm) {
-  ensureSlash()
-  window.addEventListener('hashchange', () => {
-    ensureSlash()
-    vm.$fetch()
+  normalize()
+  vm.route = parse()
+
+  on('hashchange', _ => {
+    normalize()
+    vm.route = parse()
+    vm._fetch()
   })
 }