irc-framework/dist/browser/src/helpers.js

A better IRC framework for node.js

'use strict';

require("core-js/modules/es.array.filter.js");
require("core-js/modules/es.array.index-of.js");
require("core-js/modules/es.array.map.js");
require("core-js/modules/es.array.slice.js");
require("core-js/modules/es.array.splice.js");
require("core-js/modules/es.object.to-string.js");
var _ = {
  map: require('lodash/map')
};
var Helper = {
  parseMask: parseMask,
  parseWhoFlags: parseWhoFlags,
  splitOnce: splitOnce
};
module.exports = Helper;
function parseMask(mask) {
  var nick = '';
  var user = '';
  var host = '';
  var sep1 = mask.indexOf('!');
  var sep2 = mask.indexOf('@');
  if (sep1 === -1 && sep2 === -1) {
    // something
    if (mask.indexOf('.') > -1) {
      host = mask;
    } else {
      nick = mask;
    }
  } else if (sep1 === -1 && sep2 !== -1) {
    // something@something
    nick = mask.substring(0, sep2);
    host = mask.substring(sep2 + 1);
  } else if (sep1 !== -1 && sep2 === -1) {
    // something!something
    nick = mask.substring(0, sep1);
    user = mask.substring(sep1 + 1);
  } else {
    // something!something@something
    nick = mask.substring(0, sep1);
    user = mask.substring(sep1 + 1, sep2);
    host = mask.substring(sep2 + 1);
  }
  return {
    nick: nick,
    user: user,
    host: host
  };
}
function parseWhoFlags(flagsParam, networkOptions) {
  // https://modern.ircdocs.horse/#rplwhoreply-352
  // unrealircd https://github.com/unrealircd/unrealircd/blob/8536778/doc/conf/help/help.conf#L429

  var unparsedFlags = flagsParam.split('');

  // the flags object to be returned
  var parsedFlags = {};

  // function to check for flags existence and remove it if existing
  var hasThenRemove = function hasThenRemove(flag) {
    var flagIdx = unparsedFlags.indexOf(flag);
    if (flagIdx > -1) {
      unparsedFlags.splice(flagIdx, 1);
      return true;
    }
    return false;
  };

  // away is represented by H = Here, G = Gone
  parsedFlags.away = !hasThenRemove('H');
  parsedFlags.away = hasThenRemove('G');

  // add bot mode if its flag is supported by the ircd
  var bot_mode_token = networkOptions.BOT;
  if (bot_mode_token) {
    parsedFlags.bot = hasThenRemove(bot_mode_token);
  }

  // common extended flags
  parsedFlags.registered = hasThenRemove('r');
  parsedFlags.operator = hasThenRemove('*');
  parsedFlags.secure = hasThenRemove('s');

  // filter PREFIX array against the prefix's in who reply returning matched PREFIX objects
  var chan_prefixes = networkOptions.PREFIX.filter(function (f) {
    return hasThenRemove(f.symbol);
  });
  // use _.map to return an array of mode strings from matched PREFIX objects
  parsedFlags.channel_modes = _.map(chan_prefixes, 'mode');
  return {
    parsedFlags: parsedFlags,
    unparsedFlags: unparsedFlags
  };
}
function splitOnce(input, separator) {
  if (typeof input !== 'string' || typeof separator !== 'string') {
    throw new TypeError('input and separator must be strings');
  }
  var splitPos;
  if (separator === '') {
    // special handling required for empty string as separator

    // cannot match '' at start, so start searching after first character
    splitPos = input.indexOf(separator, 1);
    if (splitPos === input.length) {
      // cannot match '' at end, so if that's all we found, act like we found nothing
      splitPos = -1;
    }
  } else {
    // normal non-zero-length separator
    splitPos = input.indexOf(separator);
  }

  // no separator found
  if (splitPos < 0) {
    return [input];
  }

  // the normal case: split around first instance of separator
  return [input.slice(0, splitPos), input.slice(splitPos + separator.length)];
}