'use strict';

module.exports = function parse_url(str, component) {
  // eslint-disable-line camelcase
  //       discuss at: http://locutus.io/php/parse_url/
  //      original by: Steven Levithan (http://blog.stevenlevithan.com)
  // reimplemented by: Brett Zamir (http://brett-zamir.me)
  //         input by: Lorenzo Pisani
  //         input by: Tony
  //      improved by: Brett Zamir (http://brett-zamir.me)
  //           note 1: original by http://stevenlevithan.com/demo/parseuri/js/assets/parseuri.js
  //           note 1: blog post at http://blog.stevenlevithan.com/archives/parseuri
  //           note 1: demo at http://stevenlevithan.com/demo/parseuri/js/assets/parseuri.js
  //           note 1: Does not replace invalid characters with '_' as in PHP,
  //           note 1: nor does it return false with
  //           note 1: a seriously malformed URL.
  //           note 1: Besides function name, is essentially the same as parseUri as
  //           note 1: well as our allowing
  //           note 1: an extra slash after the scheme/protocol (to allow file:/// as in PHP)
  //        example 1: parse_url('http://user:pass@host/path?a=v#a')
  //        returns 1: {scheme: 'http', host: 'host', user: 'user', pass: 'pass', path: '/path', query: 'a=v', fragment: 'a'}
  //        example 2: parse_url('http://en.wikipedia.org/wiki/%22@%22_%28album%29')
  //        returns 2: {scheme: 'http', host: 'en.wikipedia.org', path: '/wiki/%22@%22_%28album%29'}
  //        example 3: parse_url('https://host.domain.tld/a@b.c/folder')
  //        returns 3: {scheme: 'https', host: 'host.domain.tld', path: '/a@b.c/folder'}
  //        example 4: parse_url('https://gooduser:secretpassword@www.example.com/a@b.c/folder?foo=bar')
  //        returns 4: { scheme: 'https', host: 'www.example.com', path: '/a@b.c/folder', query: 'foo=bar', user: 'gooduser', pass: 'secretpassword' }

  var query;

  var mode = (typeof require !== 'undefined' ? require('../info/ini_get')('locutus.parse_url.mode') : undefined) || 'php';

  var key = ['source', 'scheme', 'authority', 'userInfo', 'user', 'pass', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'fragment'];

  // For loose we added one optional slash to post-scheme to catch file:/// (should restrict this)
  var parser = {
    php: new RegExp(['(?:([^:\\/?#]+):)?', '(?:\\/\\/()(?:(?:()(?:([^:@\\/]*):?([^:@\\/]*))?@)?([^:\\/?#]*)(?::(\\d*))?))?', '()', '(?:(()(?:(?:[^?#\\/]*\\/)*)()(?:[^?#]*))(?:\\?([^#]*))?(?:#(.*))?)'].join('')),
    strict: new RegExp(['(?:([^:\\/?#]+):)?', '(?:\\/\\/((?:(([^:@\\/]*):?([^:@\\/]*))?@)?([^:\\/?#]*)(?::(\\d*))?))?', '((((?:[^?#\\/]*\\/)*)([^?#]*))(?:\\?([^#]*))?(?:#(.*))?)'].join('')),
    loose: new RegExp(['(?:(?![^:@]+:[^:@\\/]*@)([^:\\/?#.]+):)?', '(?:\\/\\/\\/?)?', '((?:(([^:@\\/]*):?([^:@\\/]*))?@)?([^:\\/?#]*)(?::(\\d*))?)', '(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))', '(?:\\?([^#]*))?(?:#(.*))?)'].join(''))
  };

  var m = parser[mode].exec(str);
  var uri = {};
  var i = 14;

  while (i--) {
    if (m[i]) {
      uri[key[i]] = m[i];
    }
  }

  if (component) {
    return uri[component.replace('PHP_URL_', '').toLowerCase()];
  }

  if (mode !== 'php') {
    var name = (typeof require !== 'undefined' ? require('../info/ini_get')('locutus.parse_url.queryKey') : undefined) || 'queryKey';
    parser = /(?:^|&)([^&=]*)=?([^&]*)/g;
    uri[name] = {};
    query = uri[key[12]] || '';
    query.replace(parser, function ($0, $1, $2) {
      if ($1) {
        uri[name][$1] = $2;
      }
    });
  }

  delete uri.source;
  return uri;
};
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