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# vim: set fileencoding=utf-8 :
#
# (C) 2006,2007,2011 Guido Günther <agx@sigxcpu.org>
# 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.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""provides some debian source package related helpers"""
import os
import re
import subprocess
import gbp.command_wrappers as gbpc
from gbp.errors import GbpError
from gbp.git import GitRepositoryError
from gbp.pkg import UpstreamSource
# Make sure these are available with 'import gbp.deb'
from gbp.deb.changelog import ChangeLog, NoChangeLogError
from gbp.deb.policy import DebianPkgPolicy
# When trying to parse a version-number from a dsc or changes file, these are
# the valid characters.
debian_version_chars = 'a-zA-Z\d.~+-'
class DpkgCompareVersions(gbpc.Command):
cmd='/usr/bin/dpkg'
def __init__(self):
if not os.access(self.cmd, os.X_OK):
raise GbpError("%s not found - cannot use compare versions" % self.cmd)
gbpc.Command.__init__(self, self.cmd, ['--compare-versions'])
def __call__(self, version1, version2):
self.run_error = "Couldn't compare %s with %s" % (version1, version2)
res = gbpc.Command.call(self, [ version1, 'lt', version2 ])
if res not in [ 0, 1 ]:
raise gbpc.CommandExecFailed("%s: bad return code %d" % (self.run_error, res))
if res == 0:
return -1
elif res == 1:
res = gbpc.Command.call(self, [ version1, 'gt', version2 ])
if res not in [ 0, 1 ]:
raise gbpc.CommandExecFailed("%s: bad return code %d" % (self.run_error, res))
if res == 0:
return 1
return 0
class DscFile(object):
"""Keeps all needed data read from a dscfile"""
compressions = r"(%s)" % '|'.join(UpstreamSource.known_compressions())
pkg_re = re.compile(r'Source:\s+(?P<pkg>.+)\s*')
version_re = re.compile(r'Version:\s((?P<epoch>\d+)\:)?(?P<version>[%s]+)\s*$' % debian_version_chars)
tar_re = re.compile(r'^\s\w+\s\d+\s+(?P<tar>[^_]+_[^_]+(\.orig)?\.tar\.%s)' % compressions)
diff_re = re.compile(r'^\s\w+\s\d+\s+(?P<diff>[^_]+_[^_]+\.diff.(gz|bz2))')
deb_tgz_re = re.compile(r'^\s\w+\s\d+\s+(?P<deb_tgz>[^_]+_[^_]+\.debian.tar.%s)' % compressions)
format_re = re.compile(r'Format:\s+(?P<format>[0-9.]+)\s*')
def __init__(self, dscfile):
self.pkg = ""
self.tgz = ""
self.diff = ""
self.deb_tgz = ""
self.pkgformat = "1.0"
self.debian_version = ""
self.upstream_version = ""
self.native = False
self.dscfile = os.path.abspath(dscfile)
f = file(self.dscfile)
fromdir = os.path.dirname(os.path.abspath(dscfile))
for line in f:
m = self.version_re.match(line)
if m and not self.upstream_version:
if '-' in m.group('version'):
self.debian_version = m.group('version').split("-")[-1]
self.upstream_version = "-".join(m.group('version').split("-")[0:-1])
self.native = False
else:
self.native = True # Debian native package
self.upstream_version = m.group('version')
if m.group('epoch'):
self.epoch = m.group('epoch')
else:
self.epoch = ""
continue
m = self.pkg_re.match(line)
if m:
self.pkg = m.group('pkg')
continue
m = self.deb_tgz_re.match(line)
if m:
self.deb_tgz = os.path.join(fromdir, m.group('deb_tgz'))
continue
m = self.tar_re.match(line)
if m:
self.tgz = os.path.join(fromdir, m.group('tar'))
continue
m = self.diff_re.match(line)
if m:
self.diff = os.path.join(fromdir, m.group('diff'))
continue
m = self.format_re.match(line)
if m:
self.pkgformat = m.group('format')
continue
f.close()
if not self.pkg:
raise GbpError("Cannot parse package name from '%s'" % self.dscfile)
elif not self.tgz:
raise GbpError("Cannot parse archive name from '%s'" % self.dscfile)
if not self.upstream_version:
raise GbpError("Cannot parse version number from '%s'" % self.dscfile)
if not self.native and not self.debian_version:
raise GbpError("Cannot parse Debian version number from '%s'" % self.dscfile)
def _get_version(self):
version = [ "", self.epoch + ":" ][len(self.epoch) > 0]
if self.native:
version += self.upstream_version
else:
version += "%s-%s" % (self.upstream_version, self.debian_version)
return version
version = property(_get_version)
def __str__(self):
return "<%s object %s>" % (self.__class__.__name__, self.dscfile)
def parse_dsc(dscfile):
"""parse dsc by creating a DscFile object"""
try:
dsc = DscFile(dscfile)
except IOError as err:
raise GbpError("Error reading dsc file: %s" % err)
return dsc
def parse_changelog_repo(repo, branch, filename):
"""
Parse the changelog file from given branch in the git
repository.
"""
try:
# Note that we could just pass in the branch:filename notation
# to show as well, but we want to check if the branch / filename
# exists first, so we can give a separate error from other
# repository errors.
sha = repo.rev_parse("%s:%s" % (branch, filename))
except GitRepositoryError:
raise NoChangeLogError("Changelog %s not found in branch %s" % (filename, branch))
lines = repo.show(sha)
return ChangeLog('\n'.join(lines))
def orig_file(cp, compression):
"""
The name of the orig file belonging to changelog cp
>>> orig_file({'Source': 'foo', 'Upstream-Version': '1.0'}, "bzip2")
'foo_1.0.orig.tar.bz2'
>>> orig_file({'Source': 'bar', 'Upstream-Version': '0.0~git1234'}, "xz")
'bar_0.0~git1234.orig.tar.xz'
"""
return DebianPkgPolicy.build_tarball_name(cp['Source'],
cp['Upstream-Version'],
compression)
def get_arch():
pipe = subprocess.Popen(["dpkg", "--print-architecture"], shell=False, stdout=subprocess.PIPE)
arch = pipe.stdout.readline().strip()
return arch
def compare_versions(version1, version2):
"""compares to Debian versionnumbers suitable for sort()"""
return DpkgCompareVersions()(version1, version2)
# vim:et:ts=4:sw=4:et:sts=4:ai:set list listchars=tab\:»·,trail\:·:
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