parseUri

gistfile1.js

// parseUri 1.2.2
// (c) Steven Levithan <stevenlevithan.com>
// MIT License
function parseUri(str) {
  var o = parseUri.options;
  var m = o.parser[o.strictMode ? "strict" : "loose"].exec(str);
  var uri = {};
  var i = 14;

  while (i--) uri[o.key[i]] = m[i] || "";

  uri[o.q.name] = {};
  uri[o.key[12]].replace(o.q.parser, function($0, $1, $2) {
    if ($1) uri[o.q.name][$1] = $2;
  });

  return uri;
}

parseUri.options = {
  strictMode: false,
  key: ["source", "protocol", "authority", "userInfo", "user", "password", "host",
    "port", "relative", "path", "directory", "file", "query", "anchor"],
  q: {
    name: "queryKey",
    parser: /(?:^|&)([^&=]*)=?([^&]*)/g
  },
  parser: {
    strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
    loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
  }
};

// Get all the information you possibly can about the URI given by name and
// return it as a suitable object.
function getHost(name) {
  // If the given name contains "http:"
  if (/http(s?):/.test(name)) {
    // Prase the URI into all its little bits
    var uri = parseUri(name);

    // Store the fact that it is a remote URI
    uri.remote = true;

    // Store the user and password as a separate auth object
    uri.auth = {username: uri.user, password: uri.password};

    // Split the path part of the URI into parts using '/' as the delimiter
    // after removing any leading '/' and any trailing '/'
    var parts = uri.path.replace(/(^\/|\/$)/g, '').split('/');

    // Store the first part as the database name and remove it from the parts
    // array
    uri.db = parts.pop();

    // Restore the path by joining all the remaining parts (all the parts
    // except for the database name) with '/'s
    uri.path = parts.join('/');

    return uri;
  }

  // If the given name does not contain 'http:' then return a very basic object
  // with no host, the current path, the given name as the database name and no
  // username/password
  return {host: '', path: '/', db: name, auth: false};
}

// Generate a URL with the host data given by opts and the given path
function genUrl(opts, path) {
  // If the host is remote
  if (opts.remote) {
    // If the host already has a path, then we need to have a path delimiter
    // Otherwise, the path delimiter is the empty string
    var pathDel = !opts.path ? '' : '/';

    // Return the URL made up of all the host's information and the given path
    return opts.protocol + '://' + opts.host + ':' + opts.port + '/' + opts.path
      + pathDel + opts.db + '/' + path;
  }

  // If the host is not remote, then return the URL made up of just the
  // database name and the given path
  return '/' + opts.db + '/' + path;
}