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#!/usr/bin/python3

# Extract the fields of a problem report into separate files into a new or
# empty directory.
#
# 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.

import sys, os, os.path, gettext, gzip
from apport import unicode_gettext as _, fatal

import problem_report


def help():
    print(_('Usage: %s <report> <target directory>') % sys.argv[0])


gettext.textdomain('apport')

if len(sys.argv) >= 2 and sys.argv[1] == '--help':
    help()
    sys.exit(0)

if len(sys.argv) != 3:
    help()
    sys.exit(1)

report = sys.argv[1]
dir = sys.argv[2]

# ensure that the directory does not yet exist or is empty
try:
    if os.path.isdir(dir):
        if os.listdir(dir):
            fatal(_('Destination directory exists and is not empty.'))
    else:
        os.mkdir(dir)
except OSError as e:
    fatal(str(e))

bin_keys = []
pr = problem_report.ProblemReport()
if report == '-':
    pr.load(sys.stdin, binary=False)
else:
    try:
        if report.endswith('.gz'):
            with gzip.open(report, 'rb') as f:
                pr.load(f, binary=False)
        else:
            with open(report, 'rb') as f:
                pr.load(f, binary=False)
    except IOError as e:
        fatal(str(e))
for k in pr:
    if pr[k] is None:
        bin_keys.append(k)
        continue
    with open(os.path.join(dir, k), 'wb') as f:
        if type(pr[k]) == str:
            f.write(pr[k].encode('UTF-8'))
        else:
            f.write(pr[k])
try:
    if report.endswith('.gz'):
        with gzip.open(report, 'rb') as f:
            pr.extract_keys(f, bin_keys, dir)
    else:
        with open(report, 'rb') as f:
            pr.extract_keys(f, bin_keys, dir)
except IOError as e:
    fatal(str(e))