Generate an svg data matrix barcode for a uuid

make-datamatrix-barcode-from-uuid.py

#!/usr/bin/env python3

import uuid as _uuid
import argparse
from itertools import batched
from pylibdmtx.pylibdmtx import encode

size = 18
size_with_margin = size + 4
encoding = "Base256"


def generate_barcode(quantity: int):
    uuid = _uuid.uuid4()
    dmtx = encode(uuid.bytes, encoding, f"{size}x{size}")

    h = dmtx.height
    w = dmtx.width
    bpp = int(dmtx.bpp / 8)

    repeat = int(h / size_with_margin)

    output_w = w / repeat
    output_h = h / repeat

    data = f"""<svg width="{output_w}" height="{output_h}" xmlns="http://www.w3.org/2000/svg">"""

    p_y = -1
    for row in batched(dmtx.pixels, w * bpp * repeat):
        p_x = -1
        p_y += 1
        for column in batched(row[: w * bpp], bpp * repeat):
            p_x += 1
            if not column[0]:
                data += f"""<rect width="1" height="1" x="{p_x}" y="{p_y}" style="fill:black; />"""
    data += "</svg>"

    # Write the SVG to a file
    output_file_name = f"datamatrix_{encoding.lower()}_{w}x{h}_{uuid.hex}"
    with open(f"{output_file_name}.svg", "w") as f:
        f.write(data)


if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument(
        "quantity",
        type=int,
        help="Number of barcodes to generate",
        nargs="?",
        default=1,
    )
    args = parser.parse_args()

    for i in range(args.quantity):
        generate_barcode(i)