68 lines
1.2 KiB
JavaScript
Executable File
68 lines
1.2 KiB
JavaScript
Executable File
/**
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* Module dependencies.
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*/
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var pathRegexp = require('path-to-regexp');
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var debug = require('debug')('express:router:layer');
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/**
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* Expose `Layer`.
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*/
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module.exports = Layer;
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function Layer(path, options, fn) {
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if (!(this instanceof Layer)) {
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return new Layer(path, options, fn);
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}
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debug('new %s', path);
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options = options || {};
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this.regexp = pathRegexp(path, this.keys = [], options);
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this.handle = fn;
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}
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/**
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* Check if this route matches `path`, if so
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* populate `.params`.
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*
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* @param {String} path
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* @return {Boolean}
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* @api private
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*/
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Layer.prototype.match = function(path){
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var keys = this.keys;
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var params = this.params = {};
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var m = this.regexp.exec(path);
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var n = 0;
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var key;
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var val;
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if (!m) return false;
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this.path = m[0];
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for (var i = 1, len = m.length; i < len; ++i) {
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key = keys[i - 1];
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try {
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val = 'string' == typeof m[i]
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? decodeURIComponent(m[i])
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: m[i];
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} catch(e) {
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var err = new Error("Failed to decode param '" + m[i] + "'");
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err.status = 400;
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throw err;
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}
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if (key) {
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params[key.name] = val;
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} else {
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params[n++] = val;
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}
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}
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return true;
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};
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