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-
-
- 'use strict';
-
-
-
- var pathRegexp = require('path-to-regexp');
- var debug = require('debug')('express:router:layer');
-
-
-
- var hasOwnProperty = Object.prototype.hasOwnProperty;
-
-
-
- module.exports = Layer;
-
- function Layer(path, options, fn) {
- if (!(this instanceof Layer)) {
- return new Layer(path, options, fn);
- }
-
- debug('new %o', path)
- var opts = options || {};
-
- this.handle = fn;
- this.name = fn.name || '<anonymous>';
- this.params = undefined;
- this.path = undefined;
- this.regexp = pathRegexp(path, this.keys = [], opts);
-
-
- this.regexp.fast_star = path === '*'
- this.regexp.fast_slash = path === '/' && opts.end === false
- }
-
-
-
- Layer.prototype.handle_error = function handle_error(error, req, res, next) {
- var fn = this.handle;
-
- if (fn.length !== 4) {
-
- return next(error);
- }
-
- try {
- fn(error, req, res, next);
- } catch (err) {
- next(err);
- }
- };
-
-
-
- Layer.prototype.handle_request = function handle(req, res, next) {
- var fn = this.handle;
-
- if (fn.length > 3) {
-
- return next();
- }
-
- try {
- fn(req, res, next);
- } catch (err) {
- next(err);
- }
- };
-
-
-
- Layer.prototype.match = function match(path) {
- var match
-
- if (path != null) {
-
- if (this.regexp.fast_slash) {
- this.params = {}
- this.path = ''
- return true
- }
-
-
- if (this.regexp.fast_star) {
- this.params = {'0': decode_param(path)}
- this.path = path
- return true
- }
-
-
- match = this.regexp.exec(path)
- }
-
- if (!match) {
- this.params = undefined;
- this.path = undefined;
- return false;
- }
-
-
- this.params = {};
- this.path = match[0]
-
- var keys = this.keys;
- var params = this.params;
-
- for (var i = 1; i < match.length; i++) {
- var key = keys[i - 1];
- var prop = key.name;
- var val = decode_param(match[i])
-
- if (val !== undefined || !(hasOwnProperty.call(params, prop))) {
- params[prop] = val;
- }
- }
-
- return true;
- };
-
-
-
- function decode_param(val) {
- if (typeof val !== 'string' || val.length === 0) {
- return val;
- }
-
- try {
- return decodeURIComponent(val);
- } catch (err) {
- if (err instanceof URIError) {
- err.message = 'Failed to decode param \'' + val + '\'';
- err.status = err.statusCode = 400;
- }
-
- throw err;
- }
- }
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