Initial commit

2014-10-10 16:38:06 +08:00
commit d3e8b0efa7
7 changed files with 472 additions and 0 deletions
@@ -0,0 +1,111 @@
+var Dragonfly = global.Dragonfly;
+var FatalError = require( '../errors/FatalError.js' );
+
+var MaxRedirect = 10;
+
+var stripURI = function( url )
+{
+	return url.replace( /\/+/g, '/' ).replace( /^\//, '' );
+};
+
+var RelayPoint = function( uri, internal )
+{
+	this.direct = Boolean(
+		typeof internal !== 'undefined' ? internal : false
+	);
+
+	this.value = internal ? uri : stripURI( uri );
+};
+
+var Router = function( http )
+{
+	this.HTTP = http;
+	this.routes = {};
+	this.routable = true;
+	this.redirect_count = 0;
+
+	// Changed when routing
+	this.inputs = [];
+	this.routeObj = {};
+	this.reroute = false;
+
+	this.relaying = new RelayPoint( http.request.raw.url );
+};
+
+Router.prototype.addRoute = function( name, _route, _action, _status )
+{
+	this.routes[ name ] = {
+		route: _route
+		, action: String( _action )
+		, status: Boolean(
+			typeof _status !== 'undefined' ? _status : true
+		)
+	};
+};
+
+Router.prototype.route = function()
+{
+	if( MaxRedirect < this.redirect_count )
+		throw new FatalError( "Max redirection reached" );
+
+	this.redirect_count ++;
+	this.inputs[ this.inputs.length ] = this.relaying;
+
+	var currentRoute = this.relaying.value;
+	var r;
+
+	if( this.relaying.direct )
+	{
+		if( r = this.routes[ this.relaying.value ] )
+		{
+			this.routable = false;
+			this.setRoute( r );
+			return r.action;
+		}
+	}
+	else
+	{
+		for( var i in this.routes )
+		{
+			r = this.routes[i];
+			if( r.route.constructor.prototype.exec )
+			{
+				var match = r.route.exec( currentRoute );
+				if( match )
+				{
+					// Set routable to false
+					this.routable = false;
+					this.setRoute( r, match );
+					return r.action;
+				}
+			}
+		}
+	}
+
+	this.routable = false;
+	return false;
+};
+
+// Set Route
+Router.prototype.setRoute = function( _route, _match )
+{
+	this.routeObj = {
+		route: _route
+		, match: _match
+		, router: this.router
+		, inputs: this.inputs
+
+		// Re-route function
+		, reroute: function( target, direct )
+		{
+			Dragonfly.Log(
+				"Reroute: " + target
+				+ ( direct ? ", Direct" : "" )
+			);
+			this.relaying = new RelayPoint( target, direct );
+			this.routable = true;
+			this.reroute = true;
+		}.bind( this )
+	};
+};
+module.exports = Router;