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aa556af89d
pylint complains about C0209: Formatting a regular string which could be a f-string (consider-using-f-string) Signed-off-by: Benjamin Drung <benjamin.drung@canonical.com>
129 lines
4.3 KiB
Python
Executable File
129 lines
4.3 KiB
Python
Executable File
#!/usr/bin/python3
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# pull-debian-debdiff - find and download a specific version of a Debian
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# package and its immediate parent to generate a debdiff.
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#
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# Copyright (C) 2010-2011, Stefano Rivera <stefanor@ubuntu.com>
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# Inspired by a tool of the same name by Kees Cook.
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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# AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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# pylint: disable=invalid-name
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# pylint: enable=invalid-name
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import argparse
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import sys
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import debian.changelog
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from ubuntutools import getLogger
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from ubuntutools.archive import DebianSourcePackage, DownloadError
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from ubuntutools.config import UDTConfig
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from ubuntutools.version import Version
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Logger = getLogger()
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def previous_version(package, version, distance):
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"Given an (extracted) package, determine the version distance versions ago"
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upver = Version(version).upstream_version
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filename = f"{package}-{upver}/debian/changelog"
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changelog_file = open(filename, "r", encoding="utf-8")
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changelog = debian.changelog.Changelog(changelog_file.read())
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changelog_file.close()
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seen = 0
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for entry in changelog:
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if entry.distributions == "UNRELEASED":
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continue
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if seen == distance:
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return entry.version.full_version
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seen += 1
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return False
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def main():
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parser = argparse.ArgumentParser(usage="%(prog)s [options] <package> <version> [distance]")
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parser.add_argument(
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"-f",
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"--fetch",
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dest="fetch_only",
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default=False,
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action="store_true",
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help="Only fetch the source packages, don't diff.",
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)
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parser.add_argument(
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"-d",
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"--debian-mirror",
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metavar="DEBIAN_MIRROR",
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dest="debian_mirror",
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help="Preferred Debian mirror (default: http://deb.debian.org/debian)",
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)
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parser.add_argument(
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"-s",
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"--debsec-mirror",
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metavar="DEBSEC_MIRROR",
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dest="debsec_mirror",
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help="Preferred Debian Security mirror (default: http://security.debian.org)",
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)
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parser.add_argument(
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"--no-conf",
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dest="no_conf",
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default=False,
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action="store_true",
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help="Don't read config files or environment variables",
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)
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parser.add_argument("package", help=argparse.SUPPRESS)
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parser.add_argument("version", help=argparse.SUPPRESS)
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parser.add_argument("distance", default=1, type=int, nargs="?", help=argparse.SUPPRESS)
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args = parser.parse_args()
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config = UDTConfig(args.no_conf)
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if args.debian_mirror is None:
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args.debian_mirror = config.get_value("DEBIAN_MIRROR")
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if args.debsec_mirror is None:
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args.debsec_mirror = config.get_value("DEBSEC_MIRROR")
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mirrors = [args.debsec_mirror, args.debian_mirror]
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Logger.info("Downloading %s %s", args.package, args.version)
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newpkg = DebianSourcePackage(args.package, args.version, mirrors=mirrors)
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try:
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newpkg.pull()
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except DownloadError as e:
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Logger.error("Failed to download: %s", str(e))
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sys.exit(1)
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newpkg.unpack()
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if args.fetch_only:
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sys.exit(0)
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oldversion = previous_version(args.package, args.version, args.distance)
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if not oldversion:
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Logger.error("No previous version could be found")
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sys.exit(1)
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Logger.info("Downloading %s %s", args.package, oldversion)
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oldpkg = DebianSourcePackage(args.package, oldversion, mirrors=mirrors)
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try:
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oldpkg.pull()
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except DownloadError as e:
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Logger.error("Failed to download: %s", str(e))
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sys.exit(1)
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Logger.info("file://%s", oldpkg.debdiff(newpkg, diffstat=True))
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if __name__ == "__main__":
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try:
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main()
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except KeyboardInterrupt:
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Logger.info("User abort.")
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