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# vim: set fileencoding=utf-8 :
#
# (C) 2017 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, please see
# <http://www.gnu.org/licenses/>
import os
import re
from gbp.pkg.archive import Archive
from gbp.format import format_str
class PkgPolicy(object):
"""
Common helpers for packaging policy.
"""
packagename_re = None
packagename_msg = None
upstreamversion_re = None
upstreamversion_msg = None
@classmethod
def is_valid_packagename(cls, name):
"""
Is this a valid package name?
>>> PkgPolicy.is_valid_packagename('doesnotmatter')
Traceback (most recent call last):
...
NotImplementedError: Class needs to provide packagename_re
"""
if cls.packagename_re is None:
raise NotImplementedError("Class needs to provide packagename_re")
return True if cls.packagename_re.match(name) else False
@classmethod
def is_valid_upstreamversion(cls, version):
"""
Is this a valid upstream version number?
>>> PkgPolicy.is_valid_upstreamversion('doesnotmatter')
Traceback (most recent call last):
...
NotImplementedError: Class needs to provide upstreamversion_re
"""
if cls.upstreamversion_re is None:
raise NotImplementedError("Class needs to provide upstreamversion_re")
return True if cls.upstreamversion_re.match(version) else False
@staticmethod
def guess_upstream_src_version(filename, extra_regex=r''):
"""
Guess the package name and version from the filename of an upstream
archive.
@param filename: filename (archive or directory) from which to guess
@type filename: C{string}
@param extra_regex: additional regex to apply, needs a 'package' and a
'version' group
@return: (package name, version) or ('', '')
@rtype: tuple
>>> PkgPolicy.guess_upstream_src_version('foo-bar_0.2.orig.tar.gz')
('foo-bar', '0.2')
>>> PkgPolicy.guess_upstream_src_version('foo-Bar_0.2.orig.tar.gz')
('', '')
>>> PkgPolicy.guess_upstream_src_version('git-bar-0.2.tar.gz')
('git-bar', '0.2')
>>> PkgPolicy.guess_upstream_src_version('git-bar-0.2-rc1.tar.gz')
('git-bar', '0.2-rc1')
>>> PkgPolicy.guess_upstream_src_version('git-bar-0.2:~-rc1.tar.gz')
('git-bar', '0.2:~-rc1')
>>> PkgPolicy.guess_upstream_src_version('git-Bar-0A2d:rc1.tar.bz2')
('git-Bar', '0A2d:rc1')
>>> PkgPolicy.guess_upstream_src_version('git-1.tar.bz2')
('git', '1')
>>> PkgPolicy.guess_upstream_src_version('kvm_87+dfsg.orig.tar.gz')
('kvm', '87+dfsg')
>>> PkgPolicy.guess_upstream_src_version('foo-Bar-a.b.tar.gz')
('', '')
>>> PkgPolicy.guess_upstream_src_version('foo-bar_0.2.orig.tar.xz')
('foo-bar', '0.2')
>>> PkgPolicy.guess_upstream_src_version('foo-bar_0.2.orig.tar.lzma')
('foo-bar', '0.2')
>>> PkgPolicy.guess_upstream_src_version('foo-bar-0.2.zip')
('foo-bar', '0.2')
>>> PkgPolicy.guess_upstream_src_version('foo-bar-0.2.tlz')
('foo-bar', '0.2')
>>> PkgPolicy.guess_upstream_src_version('foo-bar_0.2.tar.gz')
('foo-bar', '0.2')
"""
version_chars = r'[a-zA-Z\d\.\~\-\:\+]'
basename = Archive.parse_filename(os.path.basename(filename))[0]
version_filters = map(
lambda x: x % version_chars,
( # Debian upstream tarball: package_'<version>.orig.tar.gz'
r'^(?P<package>[a-z\d\.\+\-]+)_(?P<version>%s+)\.orig',
# Debian native: 'package_<version>.tar.gz'
r'^(?P<package>[a-z\d\.\+\-]+)_(?P<version>%s+)',
# Upstream 'package-<version>.tar.gz'
# or directory 'package-<version>':
r'^(?P<package>[a-zA-Z\d\.\+\-]+)(-)(?P<version>[0-9]%s*)'))
if extra_regex:
version_filters = extra_regex + version_filters
for filter in version_filters:
m = re.match(filter, basename)
if m:
return (m.group('package'), m.group('version'))
return ('', '')
@staticmethod
def has_origs(orig_files, dir):
"Check orig tarball and additional tarballs exists in dir"
for o in orig_files:
if not os.path.exists(os.path.join(dir, o)):
return False
return True
@classmethod
def has_orig(cls, orig_file, dir):
return cls.has_origs([orig_file], dir)
@staticmethod
def symlink_origs(orig_files, orig_dir, output_dir, force=False):
"""
symlink orig tarball from orig_dir to output_dir
@return: [] if all links were created, list of
failed links otherwise
"""
orig_dir = os.path.abspath(orig_dir)
output_dir = os.path.abspath(output_dir)
err = []
if orig_dir == output_dir:
return []
for f in orig_files:
src = os.path.join(orig_dir, f)
dst = os.path.join(output_dir, f)
if not os.access(src, os.F_OK):
err.append(f)
continue
try:
if os.path.lexists(dst) and force:
os.unlink(dst)
os.symlink(src, dst)
except OSError:
err.append(f)
return err
@classmethod
def symlink_orig(cls, orig_file, orig_dir, output_dir, force=False):
return cls.symlink_origs([orig_file], orig_dir, output_dir, force=force)
@staticmethod
def version_subst(format, version, sanitizer=lambda arg: arg):
"""Generate a string from a given format and a version. The extracted
version can be passed through the sanitizer function argument before
being formatted into a string.
%(version)s provides a clean version.
%(hversion)s provides the same thing, but with '.' replaced with '-'.
hversion is useful for upstreams with tagging policies that prohibit .
characters.
%(version%A%B)s provides %(version)s with string 'A' replaced by 'B'.
This way, simple version mangling is possible via substitution.
Inside the substition string, '%' needs to be escaped. See the
examples below.
>>> PkgPolicy.version_subst("debian/%(version)s", "0:0~0")
'debian/0:0~0'
>>> PkgPolicy.version_subst("libfoo-%(hversion)s", "1.8.1")
'libfoo-1-8-1'
>>> PkgPolicy.version_subst("v%(version%.%_)s", "1.2.3")
'v1_2_3'
>>> PkgPolicy.version_subst(r'%(version%-%\\%)s', "0-1.2.3")
'0%1.2.3'
"""
version_mangle_re = (r'%\(version'
r'%(?P<M>[^%])'
r'%(?P<R>([^%]|\\%))+'
r'\)s')
r = re.search(version_mangle_re, format)
if r:
format = re.sub(version_mangle_re, "%(version)s", format)
version = version.replace(r.group('M'), r.group('R').replace(r'\%', '%'))
return format_str(format, dict(version=sanitizer(version),
hversion=sanitizer(version).replace('.', '-')))
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