/breezy-debian/unstable

To get this branch, use:
bzr branch https://code.breezy-vcs.org/breezy-debian/unstable
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#    merge_upstream.py -- Merge new upstream versions of packages.
#    Copyright (C) 2007 Reinhard Tartler <siretart@tauware.de>
#                  2007 James Westby <jw+debian@jameswestby.net>
#                  2008 Jelmer Vernooij <jelmer@samba.org>
#
#    Code is also taken from bzrtools, which is
#             (C) 2005, 2006, 2007 Aaron Bentley <aaron.bentley@utoronto.ca>
#             (C) 2005, 2006 Canonical Limited.
#             (C) 2006 Michael Ellerman.
#    and distributed under the GPL, version 2 or later.
#
#    This file is part of bzr-builddeb.
#
#    bzr-builddeb 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.
#
#    bzr-builddeb is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with bzr-builddeb; if not, write to the Free Software
#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#

from __future__ import absolute_import

import subprocess

from debian.changelog import Version

from .errors import (
    DchError,
    )


TAG_PREFIX = "upstream-"


def package_version(upstream_version, distribution_name, epoch=None):
    """Determine the package version for a new upstream.

    :param upstream_version: Upstream version string
    :param distribution_name: Distribution the package is for
    :param epoch: Optional epoch
    """
    if distribution_name == "ubuntu":
        ret = Version("%s-0ubuntu1" % upstream_version)
    else:
        ret = Version("%s-1" % upstream_version)
    ret.epoch = epoch
    return ret


def upstream_merge_changelog_line(upstream_version):
    """Describe that a new upstream revision was merged.

    This will either describe that a new upstream release or a new upstream snapshot
    was merged.

    :param upstream_version: Upstream version string
    :return: Line string for use in changelog
    """
    vcs_suffixes = ["~bzr", "+bzr", "~svn", "+svn", "~git", "+git"]
    for vcs_suffix in vcs_suffixes:
        if vcs_suffix in str(upstream_version):
            entry_description = "New upstream snapshot."
            break
    else:
        entry_description = "New upstream release."
    return entry_description


def changelog_add_new_version(tree, upstream_version, distribution_name,
        changelog, package):
    """Add an entry to the changelog for a new version.

    :param tree: WorkingTree in which the package lives
    :param upstream_version: Upstream version to add
    :param distribution_name: Distribution name (debian, ubuntu, ...)
    :param changelog: Changelog object
    :param package: Package name
    """
    entry_description = upstream_merge_changelog_line(upstream_version)
    if changelog is None:
        epoch = None
    else:
        epoch = changelog.epoch
    argv = ["dch", "-v",
            str(package_version(upstream_version, distribution_name, epoch)),
            "-D", "UNRELEASED", "--release-heuristic", "changelog",
            "--package", package, entry_description]
    create = (not tree.has_filename("debian/changelog"))
    if create:
        argv.append("--create")
    proc = subprocess.Popen(argv, cwd=tree.basedir, stdout=subprocess.PIPE,
        stderr=subprocess.PIPE)
    (stdout, stderr) = proc.communicate()
    if proc.returncode != 0:
        raise DchError("Adding changelog entry failed: %s" % stderr)
    if create:
        tree.add(["debian/changelog"])