initial commit (work in progress)

router/router.js

@@ -0,0 +1,87 @@
+"use strict"
+
+var buildQueryString = require("../querystring/build")
+var parseQueryString = require("../querystring/parse")
+
+module.exports = function($window, prefix) {
+	var supportsPushState = typeof $window.history.pushState === "function" && $window.location.protocol !== "file:"
+
+	function parsePath(path) {
+		var params = {}
+		var queryIndex = path.indexOf("?")
+		var hashIndex = path.indexOf("#")
+		var pathEnd = queryIndex > -1 ? queryIndex : hashIndex > -1 ? hashIndex : path.length
+		if (queryIndex > -1) {
+			var queryEnd = hashIndex > -1 ? hashIndex : path.length
+			var queryParams = parseQueryString(path.slice(queryIndex + 1, queryEnd))
+			for (var key in queryParams) params[key] = queryParams[key]
+		}
+		if (hashIndex > -1) {
+			var hashParams = parseQueryString(path.slice(hashIndex + 1))
+			for (var key in hashParams) params[key] = hashParams[key]
+		}
+		return {name: path.slice(0, pathEnd), params: params}
+	}
+
+	function getPath() {
+		var type = prefix.charAt(0)
+		switch (type) {
+			case "#": return $window.location.hash.slice(prefix.length)
+			case "?": return $window.location.search.slice(prefix.length) + $window.location.hash
+			default: return $window.location.pathname + $window.location.search + $window.location.hash
+		}
+	}
+
+	function setPath(path, data, options) {
+		if (supportsPushState) {
+			var queryData = {}
+			if (data != null) {
+				for (var key in data) queryData[key] = data[key]
+				path = path.replace(/:([^\/]+)/g, function(match, token) {
+					delete queryData[token]
+					return data[token]
+				})
+			}
+			
+			var query = buildQueryString(queryData)
+			if (query) path = path + "?" + query
+			
+			if (options && options.replace) $window.history.replaceState(null, null, prefix + path)
+			else $window.history.pushState(null, null, prefix + path)
+			$window.onpopstate()
+		}
+		else $window.location.href = prefix + path
+	}
+	
+	function defineRoutes(routes, resolve, reject) {
+		if (supportsPushState) $window.onpopstate = resolveRoute
+		else if (prefix.charAt(0) === "#") $window.onhashchange = resolveRoute
+		resolveRoute()
+		
+		function resolveRoute(e) {
+			var path = getPath()
+			var data = parsePath(path)
+			
+			for (var route in routes) {
+				var matcher = new RegExp("^" + route.replace(/:[^\/]+?\.{3}/g, "(.*?)").replace(/:[^\/]+/g, "([^\\/]+)") + "\/?$")
+				
+				if (matcher.test(data.name)) {
+					data.name.replace(matcher, function() {
+						var keys = route.match(/:[^\/]+/g) || []
+						var values = [].slice.call(arguments, 1, -2)
+						for (var i = 0; i < keys.length; i++) {
+							data.params[keys[i].replace(/:|\./g, "")] = decodeURIComponent(values[i])
+						}
+						resolve(routes[route], data.params, path, route)
+					})
+					return
+				}
+			}
+			
+			reject(path, data.params)
+		}
+		return resolveRoute
+	}
+	
+	return {getPath: getPath, setPath: setPath, defineRoutes: defineRoutes}
+}