'use strict';

var gifRegexp = /^GIF8a/; function isGIF (buffer) {

var signature = buffer.toString('ascii', 0, 6);
return (gifRegexp.test(signature));

}

function calculate(buffer) {

return {
  'width': buffer.readUInt16LE(6),
  'height': buffer.readUInt16LE(8)
};

}

module.exports = {

'detect': isGIF,
'calculate': calculate

};