rest-methods/lib/page-js.js

Declaratively publish functions for remote invocation.

/**

Extracted from [page.js]
Source: https://github.com/visionmedia/page.js

--------------------------------------------------------------------

(The MIT License)

Copyright (c) 2012 TJ Holowaychuk <tj@vision-media.ca>

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*/

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true
});
var base = '';

/**
 * Initialize `Route` with the given HTTP `path`,
 * and an array of `callbacks` and `options`.
 *
 * Options:
 *
 *   - `sensitive`    enable case-sensitive routes
 *   - `strict`       enable strict matching for trailing slashes
 *
 * @param {String} path
 * @param {Object} options.
 * @api private
 */

function Route(path, options) {
  options = options || {};
  this.path = path;
  this.regexp = pathtoRegexp(path, this.keys = [], options.sensitive, options.strict);
}

/**
 * Check if this route matches `path`, if so
 * populate `params`.
 *
 * @param {String} path
 * @param {Array} params
 * @return {Boolean}
 * @api private
 */

Route.prototype.match = function (path, params) {
  var keys = this.keys,
      qsIndex = path.indexOf('?'),
      pathname = ~qsIndex ? path.slice(0, qsIndex) : path,
      m = this.regexp.exec(decodeURIComponent(pathname));

  if (!m) return false;

  for (var i = 1, len = m.length; i < len; ++i) {
    var key = keys[i - 1];

    var val = 'string' == typeof m[i] ? decodeURIComponent(m[i]) : m[i];

    if (key) {
      params[key.name] = undefined !== params[key.name] ? params[key.name] : val;
    } else {
      params.push(val);
    }
  }

  return true;
};

/**
 * Normalize the given path string,
 * returning a regular expression.
 *
 * An empty array should be passed,
 * which will contain the placeholder
 * key names. For example "/user/:id" will
 * then contain ["id"].
 *
 * @param  {String|RegExp|Array} path
 * @param  {Array} keys
 * @param  {Boolean} sensitive
 * @param  {Boolean} strict
 * @return {RegExp}
 * @api private
 */

function pathtoRegexp(path, keys, sensitive, strict) {
  if (path instanceof RegExp) return path;
  if (path instanceof Array) path = '(' + path.join('|') + ')';
  path = path.concat(strict ? '' : '/?').replace(/\/\(/g, '(?:/').replace(/(\/)?(\.)?:(\w+)(?:(\(.*?\)))?(\?)?/g, function (_, slash, format, key, capture, optional) {
    keys.push({ name: key, optional: !!optional });
    slash = slash || '';
    return '' + (optional ? '' : slash) + '(?:' + (optional ? slash : '') + (format || '') + (capture || (format && '([^/.]+?)' || '([^/]+?)')) + ')' + (optional || '');
  }).replace(/([\/.])/g, '\\$1').replace(/\*/g, '(.*)');
  return new RegExp('^' + path + '$', sensitive ? '' : 'i');
}

// -----------------------------------------------------------------------------------------------------

/**
 * Initialize a new "request" `Context`
 * with the given `path` and optional initial `state`.
 *
 * @param {String} path
 * @param {Object} state
 * @api public
 */

function Context(path, state) {
  if ('/' == path[0] && 0 != path.indexOf(base)) path = base + path;
  var i = path.indexOf('?');
  this.canonicalPath = path;
  this.path = path.replace(base, '') || '/';
  this.state = state || {};
  this.state.path = path;
  this.querystring = ~i ? path.slice(i + 1) : '';
  this.pathname = ~i ? path.slice(0, i) : path;
  this.params = [];
}

exports['default'] = {
  Context: Context,
  Route: Route
};
module.exports = exports['default'];