python script to search for specific class in r8 dumps | https://issuetracker.google.com/issues/366412380

search.py

import glob
import os
import sys
import tempfile
import zipfile

classname_str, *search_dirs = sys.argv[1:]
classname_bytes = classname_str.encode()

for search_dir in search_dirs:
    print(f"dir={search_dir}")
    for file in sorted(glob.glob(os.path.join(search_dir, "*.zip"))):
        with tempfile.TemporaryDirectory() as tmpdir:
            jar = os.path.join(tmpdir, "program.jar")
            with zipfile.ZipFile(file) as zf:
                zf.extract("program.jar", tmpdir)
            with zipfile.ZipFile(jar) as zf:
                for info in zf.infolist():
                    if info.filename.endswith(".dex"):
                        if classname_bytes in zf.read(info.filename):
                            print(f"file={file} dex={info.filename}")
                    elif info.filename.endswith(".class"):
                        if classname_str in info.filename:
                            print(f"file={file} class={info.filename}")
                    else:
                        print(f"file={file} entry={info.filename}")