1 files changed, 273 insertions, 0 deletions
diff --git a/node_modules/express/lib/router/index.js b/node_modules/express/lib/router/index.js
new file mode 100644
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--- /dev/null
+++ b/node_modules/express/lib/router/index.js
@@ -0,0 +1,273 @@
+/**
+ * Module dependencies.
+ */
+
+var Route = require('./route')
+  , utils = require('../utils')
+  , methods = require('methods')
+  , debug = require('debug')('express:router')
+  , parse = require('connect').utils.parseUrl;
+
+/**
+ * Expose `Router` constructor.
+ */
+
+exports = module.exports = Router;
+
+/**
+ * Initialize a new `Router` with the given `options`.
+ *
+ * @param {Object} options
+ * @api private
+ */
+
+function Router(options) {
+  options = options || {};
+  var self = this;
+  this.map = {};
+  this.params = {};
+  this._params = [];
+  this.caseSensitive = options.caseSensitive;
+  this.strict = options.strict;
+  this.middleware = function router(req, res, next){
+    self._dispatch(req, res, next);
+  };
+}
+
+/**
+ * Register a param callback `fn` for the given `name`.
+ *
+ * @param {String|Function} name
+ * @param {Function} fn
+ * @return {Router} for chaining
+ * @api public
+ */
+
+Router.prototype.param = function(name, fn){
+  // param logic
+  if ('function' == typeof name) {
+    this._params.push(name);
+    return;
+  }
+
+  // apply param functions
+  var params = this._params
+    , len = params.length
+    , ret;
+
+  for (var i = 0; i < len; ++i) {
+    if (ret = params[i](name, fn)) {
+      fn = ret;
+    }
+  }
+
+  // ensure we end up with a
+  // middleware function
+  if ('function' != typeof fn) {
+    throw new Error('invalid param() call for ' + name + ', got ' + fn);
+  }
+
+  (this.params[name] = this.params[name] || []).push(fn);
+  return this;
+};
+
+/**
+ * Route dispatcher aka the route "middleware".
+ *
+ * @param {IncomingMessage} req
+ * @param {ServerResponse} res
+ * @param {Function} next
+ * @api private
+ */
+
+Router.prototype._dispatch = function(req, res, next){
+  var params = this.params
+    , self = this;
+
+  debug('dispatching %s %s (%s)', req.method, req.url, req.originalUrl);
+
+  // route dispatch
+  (function pass(i, err){
+    var paramCallbacks
+      , paramIndex = 0
+      , paramVal
+      , route
+      , keys
+      , key;
+
+    // match next route
+    function nextRoute(err) {
+      pass(req._route_index + 1, err);
+    }
+
+    // match route
+    req.route = route = self.matchRequest(req, i);
+
+    // no route
+    if (!route) return next(err);
+    debug('matched %s %s', route.method, route.path);
+
+    // we have a route
+    // start at param 0
+    req.params = route.params;
+    keys = route.keys;
+    i = 0;
+
+    // param callbacks
+    function param(err) {
+      paramIndex = 0;
+      key = keys[i++];
+      paramVal = key && req.params[key.name];
+      paramCallbacks = key && params[key.name];
+
+      try {
+        if ('route' == err) {
+          nextRoute();
+        } else if (err) {
+          i = 0;
+          callbacks(err);
+        } else if (paramCallbacks && undefined !== paramVal) {
+          paramCallback();
+        } else if (key) {
+          param();
+        } else {
+          i = 0;
+          callbacks();
+        }
+      } catch (err) {
+        param(err);
+      }
+    };
+
+    param(err);
+
+    // single param callbacks
+    function paramCallback(err) {
+      var fn = paramCallbacks[paramIndex++];
+      if (err || !fn) return param(err);
+      fn(req, res, paramCallback, paramVal, key.name);
+    }
+
+    // invoke route callbacks
+    function callbacks(err) {
+      var fn = route.callbacks[i++];
+      try {
+        if ('route' == err) {
+          nextRoute();
+        } else if (err && fn) {
+          if (fn.length < 4) return callbacks(err);
+          fn(err, req, res, callbacks);
+        } else if (fn) {
+          if (fn.length < 4) return fn(req, res, callbacks);
+          callbacks();
+        } else {
+          nextRoute(err);
+        }
+      } catch (err) {
+        callbacks(err);
+      }
+    }
+  })(0);
+};
+
+/**
+ * Attempt to match a route for `req`
+ * with optional starting index of `i`
+ * defaulting to 0.
+ *
+ * @param {IncomingMessage} req
+ * @param {Number} i
+ * @return {Route}
+ * @api private
+ */
+
+Router.prototype.matchRequest = function(req, i, head){
+  var method = req.method.toLowerCase()
+    , url = parse(req)
+    , path = url.pathname
+    , routes = this.map
+    , i = i || 0
+    , route;
+
+  // HEAD support
+  if (!head && 'head' == method) {
+    route = this.matchRequest(req, i, true);
+    if (route) return route;
+     method = 'get';
+  }
+
+  // routes for this method
+  if (routes = routes[method]) {
+
+    // matching routes
+    for (var len = routes.length; i < len; ++i) {
+      route = routes[i];
+      if (route.match(path)) {
+        req._route_index = i;
+        return route;
+      }
+    }
+  }
+};
+
+/**
+ * Attempt to match a route for `method`
+ * and `url` with optional starting
+ * index of `i` defaulting to 0.
+ *
+ * @param {String} method
+ * @param {String} url
+ * @param {Number} i
+ * @return {Route}
+ * @api private
+ */
+
+Router.prototype.match = function(method, url, i, head){
+  var req = { method: method, url: url };
+  return  this.matchRequest(req, i, head);
+};
+
+/**
+ * Route `method`, `path`, and one or more callbacks.
+ *
+ * @param {String} method
+ * @param {String} path
+ * @param {Function} callback...
+ * @return {Router} for chaining
+ * @api private
+ */
+
+Router.prototype.route = function(method, path, callbacks){
+  var method = method.toLowerCase()
+    , callbacks = utils.flatten([].slice.call(arguments, 2));
+
+  // ensure path was given
+  if (!path) throw new Error('Router#' + method + '() requires a path');
+
+  // ensure all callbacks are functions
+  callbacks.forEach(function(fn, i){
+    if ('function' == typeof fn) return;
+    var type = {}.toString.call(fn);
+    var msg = '.' + method + '() requires callback functions but got a ' + type;
+    throw new Error(msg);
+  });
+
+  // create the route
+  debug('defined %s %s', method, path);
+  var route = new Route(method, path, callbacks, {
+    sensitive: this.caseSensitive,
+    strict: this.strict
+  });
+
+  // add it
+  (this.map[method] = this.map[method] || []).push(route);
+  return this;
+};
+
+methods.forEach(function(method){
+  Router.prototype[method] = function(path){
+    var args = [method].concat([].slice.call(arguments));
+    this.route.apply(this, args);
+    return this;
+  };
+});