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

A better IRC framework for node.js

'use strict';

require("core-js/modules/es.array.index-of.js");
require("core-js/modules/es.regexp.exec.js");
require("core-js/modules/es.string.replace.js");
var MessageTags = require('./messagetags');
var IrcMessage = require('./ircmessage');
var helpers = require('./helpers');
module.exports = parseIrcLine;
var newline_regex = /^[\r\n]+|[\r\n]+$/g;
function parseIrcLine(input_) {
  var input = input_.replace(newline_regex, '');
  var cPos = 0;
  var inParams = false;
  var nextToken = function nextToken() {
    // Fast forward to somewhere with actual data
    while (input[cPos] === ' ' && cPos < input.length) {
      cPos++;
    }
    if (cPos === input.length) {
      // If reading the params then return null to indicate no more params available.
      // The trailing parameter may be empty but should still be included as an empty string.
      return inParams ? null : '';
    }
    var end = input.indexOf(' ', cPos);
    if (end === -1) {
      // No more spaces means were on the last token
      end = input.length;
    }
    if (inParams && input[cPos] === ':' && input[cPos - 1] === ' ') {
      // If a parameter start with : then we're in the last parameter which may incude spaces
      cPos++;
      end = input.length;
    }
    var token = input.substring(cPos, end);
    cPos = end;

    // Fast forward our current position so we can peek what's next via input[cPos]
    while (input[cPos] === ' ' && cPos < input.length) {
      cPos++;
    }
    return token;
  };
  var ret = new IrcMessage();
  if (input[cPos] === '@') {
    ret.tags = MessageTags.decode(nextToken().substr(1));
  }
  if (input[cPos] === ':') {
    ret.prefix = nextToken().substr(1);
    var mask = helpers.parseMask(ret.prefix);
    ret.nick = mask.nick;
    ret.ident = mask.user;
    ret.hostname = mask.host;
  }
  ret.command = nextToken().toUpperCase();
  inParams = true;
  var token = nextToken();
  while (token !== null) {
    ret.params.push(token);
    token = nextToken();
  }
  return ret;
}