#!/usr/bin/env python3
# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#

# Extract a mar file and uncompress the content

import os
import re
import sys
import subprocess
from path import convert_to_native

def uncompress_content(file_path):
    bzip2 = os.environ.get('BZIP2', 'bzip2')
    file_path_compressed = file_path + ".bz2"
    os.rename(file_path, file_path_compressed)
    subprocess.check_call(["bzip2", "-d", convert_to_native(file_path_compressed)])

def extract_mar(mar_file, target_dir):
    mar = os.environ.get('MAR', 'mar')
    subprocess.check_call([mar, "-C", convert_to_native(target_dir), "-x", convert_to_native(mar_file)])
    file_info = subprocess.check_output([mar, "-t", convert_to_native(mar_file)])
    lines = file_info.splitlines()
    prog = re.compile("\d+\s+\d+\s+(.+)")
    for line in lines:
        match = prog.match(line.decode("utf-8", "strict"))
        if match is None:
            continue
        info = match.groups()[0]
        # ignore header line
        if info == b'NAME':
            continue

        uncompress_content(os.path.join(target_dir, info))

def main():
    if len(sys.argv) != 3:
        print("Help: This program takes exactly two arguments pointing to a mar file and a target location")
        sys.exit(1)

    mar_file = sys.argv[1]
    target_dir = sys.argv[2]
    extract_mar(mar_file, target_dir)

if __name__ == "__main__":
    main()

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