Macromedia FreeHand Document

import magic
# Libmagic can usually identify FreeHand versions based on their AGD header
print(magic.from_file('vector.fh11', mime=True)) # Often outputs 'application/x-freehand' or 'image/x-freehand'

const fs = require('fs');
// Manually detecting the FreeHand AGD magic bytes
const buffer = Buffer.alloc(4);
const fd = fs.openSync('vector.fh11', 'r');
fs.readSync(fd, buffer, 0, 4, 0);
fs.closeSync(fd);
const signature = buffer.toString('ascii', 0, 4);
const isFreeHand = signature.startsWith('AGD');
console.log('Is Macromedia FreeHand:', isFreeHand, `(Signature: ${signature})`);

import (
    "bytes"
    "os"
)
// Native Go HTTP detection will not recognize FreeHand.
// You must read the first 4 bytes and verify the AGD signature:
// isFreeHand := len(buf) >= 4 && bytes.HasPrefix(buf, []byte("AGD"))

$mime = mime_content_type('vector.fh11');
echo $mime; // Without updated magic database definitions, this will frequently default to 'application/octet-stream'