TwitchBot/node_modules/mysql/lib/protocol/packets/ErrorPacket.js

module.exports = ErrorPacket;
function ErrorPacket(options) {
  options = options || {};

  this.fieldCount     = options.fieldCount;
  this.errno          = options.errno;
  this.sqlStateMarker = options.sqlStateMarker;
  this.sqlState       = options.sqlState;
  this.message        = options.message;
}

ErrorPacket.prototype.parse = function(parser) {
  this.fieldCount = parser.parseUnsignedNumber(1);
  this.errno      = parser.parseUnsignedNumber(2);

  // sqlStateMarker ('#' = 0x23) indicates error packet format
  if (parser.peak() === 0x23) {
    this.sqlStateMarker = parser.parseString(1);
    this.sqlState       = parser.parseString(5);
  }

  this.message = parser.parsePacketTerminatedString();
};

ErrorPacket.prototype.write = function(writer) {
  writer.writeUnsignedNumber(1, 0xff);
  writer.writeUnsignedNumber(2, this.errno);

  if (this.sqlStateMarker) {
    writer.writeString(this.sqlStateMarker);
    writer.writeString(this.sqlState);
  }

  writer.writeString(this.message);
};