mirakc-arib collect-logos の出力からロゴ画像を書き出す

collect-logo.py

#!/usr/bin/env python
#
# Usage: 
# curl -s http://localhost:40772/api/channels/BS/BS15_0/stream | mirakc-arib collect-logos | ./collect-logo.py

import json
import sys
from urllib.request import urlopen

written_files = set()

while True:
    line = sys.stdin.readline()
    if not line:
        break
    try:
        data = json.loads(line)
    except json.JSONDecodeError:
        print(f"Error decoding JSON: {line.strip()}", file=sys.stderr)
        continue

    filename = (
        f"logo_n{data['nid']}_id{data['id']}_t{data['type']}_v{data['version']}.png"
    )

    try:
        if filename in written_files:
            print(f"Skipping already processed file: {filename}", file=sys.stderr)
            continue
        if not data["data"].startswith("data:"):
            print(
                f"Invalid data URL for {data['nid']}-{data['id']}: {data['data']}",
                file=sys.stderr,
            )
            continue
        with open(filename, "wb") as f:
            with urlopen(data["data"]) as lf:
                f.write(lf.read())
        print(f"Logo saved as {filename}", file=sys.stderr)
        written_files.add(filename)
    except Exception as e:
        print(f"Error processing {data['nid']}-{data['id']}: {e}", file=sys.stderr)
        continue