traceur/dist/commonjs/runtime/url.js

ES6 to ES5 compiler

"use strict";
(function() {
  function buildFromEncodedParts(opt_scheme, opt_userInfo, opt_domain, opt_port, opt_path, opt_queryData, opt_fragment) {
    var out = [];
    if (opt_scheme) {
      out.push(opt_scheme, ':');
    }
    if (opt_domain) {
      out.push('//');
      if (opt_userInfo) {
        out.push(opt_userInfo, '@');
      }
      out.push(opt_domain);
      if (opt_port) {
        out.push(':', opt_port);
      }
    }
    if (opt_path) {
      out.push(opt_path);
    }
    if (opt_queryData) {
      out.push('?', opt_queryData);
    }
    if (opt_fragment) {
      out.push('#', opt_fragment);
    }
    return out.join('');
  }
  var splitRe = new RegExp('^' + '(?:' + '([^:/?#.]+)' + ':)?' + '(?://' + '(?:([^/?#]*)@)?' + '([\\w\\d\\-\\u0100-\\uffff.%]*)' + '(?::([0-9]+))?' + ')?' + '([^?#]+)?' + '(?:\\?([^#]*))?' + '(?:#(.*))?' + '$');
  var ComponentIndex = {
    SCHEME: 1,
    USER_INFO: 2,
    DOMAIN: 3,
    PORT: 4,
    PATH: 5,
    QUERY_DATA: 6,
    FRAGMENT: 7
  };
  function split(uri) {
    return (uri.match(splitRe));
  }
  function removeDotSegments(path) {
    if (path === '/')
      return '/';
    var leadingSlash = path[0] === '/' ? '/' : '';
    var trailingSlash = path.slice(-1) === '/' ? '/' : '';
    var segments = path.split('/');
    var out = [];
    var up = 0;
    for (var pos = 0; pos < segments.length; pos++) {
      var segment = segments[pos];
      switch (segment) {
        case '':
        case '.':
          break;
        case '..':
          if (out.length)
            out.pop();
          else
            up++;
          break;
        default:
          out.push(segment);
      }
    }
    if (!leadingSlash) {
      while (up-- > 0) {
        out.unshift('..');
      }
      if (out.length === 0)
        out.push('.');
    }
    return leadingSlash + out.join('/') + trailingSlash;
  }
  function joinAndCanonicalizePath(parts) {
    var path = parts[ComponentIndex.PATH] || '';
    path = removeDotSegments(path);
    parts[ComponentIndex.PATH] = path;
    return buildFromEncodedParts(parts[ComponentIndex.SCHEME], parts[ComponentIndex.USER_INFO], parts[ComponentIndex.DOMAIN], parts[ComponentIndex.PORT], parts[ComponentIndex.PATH], parts[ComponentIndex.QUERY_DATA], parts[ComponentIndex.FRAGMENT]);
  }
  function canonicalizeUrl(url) {
    var parts = split(url);
    return joinAndCanonicalizePath(parts);
  }
  function resolveUrl(base, url) {
    var parts = split(url);
    var baseParts = split(base);
    if (parts[ComponentIndex.SCHEME]) {
      return joinAndCanonicalizePath(parts);
    } else {
      parts[ComponentIndex.SCHEME] = baseParts[ComponentIndex.SCHEME];
    }
    for (var i = ComponentIndex.SCHEME; i <= ComponentIndex.PORT; i++) {
      if (!parts[i]) {
        parts[i] = baseParts[i];
      }
    }
    if (parts[ComponentIndex.PATH][0] == '/') {
      return joinAndCanonicalizePath(parts);
    }
    var path = baseParts[ComponentIndex.PATH];
    var index = path.lastIndexOf('/');
    path = path.slice(0, index + 1) + parts[ComponentIndex.PATH];
    parts[ComponentIndex.PATH] = path;
    return joinAndCanonicalizePath(parts);
  }
  function isAbsolute(name) {
    if (!name)
      return false;
    if (name[0] === '/')
      return true;
    var parts = split(name);
    if (parts[ComponentIndex.SCHEME])
      return true;
    return false;
  }
  $traceurRuntime.canonicalizeUrl = canonicalizeUrl;
  $traceurRuntime.isAbsolute = isAbsolute;
  $traceurRuntime.removeDotSegments = removeDotSegments;
  $traceurRuntime.resolveUrl = resolveUrl;
})();