0.0.2 • Published 3 years ago
has-bytes v0.0.2
has-bytes
Quickly Determine if a File has Certain Byte Sequences
background
You can use this to quickly identify a file type
install
npm install has-bytes
usage
const fs = require("fs");
const hasBytes = require("./has-bytes");
const buffer = fs.readFileSync("./data/flower.jpg");
const { result } = hasBytes({
data: buffer,
debug: false, // set debug to true for increased logging
sequences: {
magic: [255, 216, 255], // magic number (including start of file)
EOI: [0xFF, 0xD9] // end of file indicator
}
});
// result is true