flask-router-plus/lib/rule-extractor.js

Flask-inspired routing system for node and connect. Nice if you just need a routing system without depending on connect, or need routing middleware without all features provided by express.

// Generated by CoffeeScript 1.6.3
(function() {
  var RegexExtractor, RuleExtractor, defaultParser, escapeRegex,
    __hasProp = {}.hasOwnProperty,
    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };

  RegexExtractor = require('./regex-extractor');

  defaultParser = require('./default-parser');

  escapeRegex = function(s) {
    return s.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&');
  };

  RuleExtractor = (function(_super) {
    __extends(RuleExtractor, _super);

    function RuleExtractor(parsers) {
      this.parsers = parsers;
      this.regexParts = ['^'];
      this.params = [];
    }

    RuleExtractor.prototype.pushStatic = function(staticPart) {
      return this.regexParts.push(escapeRegex(staticPart));
    };

    RuleExtractor.prototype.pushParam = function(dynamicPart) {
      this.params.push(dynamicPart);
      return this.regexParts.push('(.*?)');
    };

    RuleExtractor.prototype.compile = function() {
      this.regexParts.push('$');
      this.regex = new RegExp(this.regexParts.join(''));
      return this;
    };

    RuleExtractor.prototype.extract = function(requestPath) {
      var extractedArgs, i, m, param, params, parser, parsers, value, _i, _ref;
      m = this.regex.exec(requestPath);
      if (!m) {
        return null;
      }
      params = this.params;
      parsers = this.parsers;
      extractedArgs = [];
      for (i = _i = 1, _ref = m.length; 1 <= _ref ? _i < _ref : _i > _ref; i = 1 <= _ref ? ++_i : --_i) {
        param = params[i - 1];
        parser = parsers[param.parserName];
        if (typeof parser !== 'function') {
          parser = defaultParser;
        }
        value = parser(m[i], param.parserOpts);
        if (value === null) {
          return null;
        }
        extractedArgs[i - 1] = extractedArgs[param.name] = value;
      }
      return extractedArgs;
    };

    return RuleExtractor;

  })(RegexExtractor);

  module.exports = RuleExtractor;

}).call(this);