node_modules.image-size.lib.types.gif.js Maven / Gradle / Ivy
'use strict';
var gifRegexp = /^GIF8[7,9]a/;
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
};