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#!/usr/bin/python3
# Copyright (c) 2006 Canonical Ltd.
# Author: Martin Pitt <martin.pitt@ubuntu.com>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version. See http://www.gnu.org/copyleft/gpl.html for
# the full text of the license.
"""Extract the fields of a problem report into separate files into a new or
empty directory."""
# pylint: disable=invalid-name
# pylint: enable=invalid-name
import argparse
import contextlib
import gettext
import gzip
import io
import os
import sys
from collections.abc import Iterator
from gettext import gettext as _
from typing import BinaryIO
import problem_report
from apport import fatal
def parse_args() -> argparse.Namespace:
"""Parse command line arguments."""
parser = argparse.ArgumentParser(usage=_("%(prog)s <report> <target directory>"))
parser.add_argument("report", help=_("Report file to unpack"))
parser.add_argument("target_directory", help=_("directory to unpack report to"))
return parser.parse_args()
@contextlib.contextmanager
def open_report(report_filename: str) -> Iterator[(BinaryIO | gzip.GzipFile)]:
"""Open a problem report from given filename."""
if report_filename == "-":
# sys.stdin has type io.TextIOWrapper, not the claimed io.TextIO.
# See https://github.com/python/typeshed/issues/10093
assert isinstance(sys.stdin, io.TextIOWrapper)
yield sys.stdin.detach()
elif report_filename.endswith(".gz"):
with gzip.open(report_filename, "rb") as report_file:
yield report_file
else:
with open(report_filename, "rb") as report_file:
yield report_file
def unpack_report_to_directory(
report: problem_report.ProblemReport, target_directory: str
) -> list[str]:
"""Write each report entry into a separate file.
Return a list of keys that were not loaded.
"""
missing_keys = []
for key, value in report.items():
if value is None:
missing_keys.append(key)
continue
with open(os.path.join(target_directory, key), "wb") as key_file:
if isinstance(value, str):
key_file.write(value.encode("UTF-8"))
else:
key_file.write(value)
return missing_keys
# pylint: disable-next=missing-function-docstring
def main() -> None:
gettext.textdomain("apport")
args = parse_args()
# ensure that the directory does not yet exist or is empty
try:
if os.path.isdir(args.target_directory):
if os.listdir(args.target_directory):
fatal(_("Destination directory exists and is not empty."))
else:
os.mkdir(args.target_directory)
except OSError as error:
fatal("%s", str(error))
report = problem_report.ProblemReport()
try:
with open_report(args.report) as report_file:
# In case of passing the report to stdin,
# the report needs to be loaded in one go.
# The current implementation loads the whole report into memory.
report.load(report_file, binary=args.report == "-")
except (OSError, problem_report.MalformedProblemReport) as error:
fatal("%s", str(error))
bin_keys = unpack_report_to_directory(report, args.target_directory)
if bin_keys:
try:
with open_report(args.report) as report_file:
report.extract_keys(report_file, bin_keys, args.target_directory)
except (OSError, problem_report.MalformedProblemReport) as error:
fatal("%s", str(error))
if __name__ == "__main__":
main()