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# quilt.py -- Quilt patch handling
# Copyright (C) 2011 Canonical Ltd.
#
# 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
#
"""Quilt patch handling."""
from __future__ import absolute_import
import errno
import os
import signal
import subprocess
from ... import (
errors,
trace,
)
class QuiltError(errors.BzrError):
_fmt = "An error (%(retcode)d) occurred running quilt: %(stderr)s%(extra)s"
def __init__(self, retcode, stdout, stderr):
self.retcode = retcode
self.stderr = stderr
if stdout is not None:
self.extra = "\n\n%s" % stdout
else:
self.extra = ""
self.stdout = stdout
def run_quilt(args, working_dir, series_file=None, patches_dir=None,
quiet=None):
"""Run quilt.
:param args: Arguments to quilt
:param working_dir: Working dir
:param series_file: Optional path to the series file
:param patches_dir: Optional path to the patches
:param quilt: Whether to be quiet (quilt stderr not to terminal)
:raise QuiltError: When running quilt fails
"""
def subprocess_setup():
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
env = {}
if patches_dir is not None:
env["QUILT_PATCHES"] = patches_dir
else:
env["QUILT_PATCHES"] = os.path.join(working_dir, "debian", "patches")
if series_file is not None:
env["QUILT_SERIES"] = series_file
else:
env["QUILT_SERIES"] = os.path.join(env["QUILT_PATCHES"], "series")
# Hide output if -q is in use.
if quiet is None:
quiet = trace.is_quiet()
if not quiet:
stderr = subprocess.STDOUT
else:
stderr = subprocess.PIPE
command = ["quilt"] + args
trace.mutter("running: %r", command)
if not os.path.isdir(working_dir):
raise AssertionError("%s is not a valid directory" % working_dir)
try:
proc = subprocess.Popen(command, cwd=working_dir, env=env,
stdin=subprocess.PIPE, preexec_fn=subprocess_setup,
stdout=subprocess.PIPE, stderr=stderr)
except OSError, e:
if e.errno != errno.ENOENT:
raise
raise errors.BzrError("quilt is not installed, please install it")
output = proc.communicate()
if proc.returncode not in (0, 2):
raise QuiltError(proc.returncode, output[0], output[1])
if output[0] is None:
return ""
return output[0]
def quilt_pop_all(working_dir, patches_dir=None, series_file=None, quiet=None,
force=False):
"""Pop all patches.
:param working_dir: Directory to work in
:param patches_dir: Optional patches directory
:param series_file: Optional series file
"""
args = ["pop", "-a"]
if force:
args.append("-f")
return run_quilt(args, working_dir=working_dir,
patches_dir=patches_dir, series_file=series_file, quiet=quiet)
def quilt_pop(working_dir, patch, patches_dir=None, series_file=None, quiet=None):
"""Pop a patch.
:param working_dir: Directory to work in
:param patch: Patch to apply
:param patches_dir: Optional patches directory
:param series_file: Optional series file
"""
return run_quilt(["pop", patch], working_dir=working_dir,
patches_dir=patches_dir, series_file=series_file, quiet=quiet)
def quilt_push_all(working_dir, patches_dir=None, series_file=None, quiet=None,
force=False):
"""Push all patches.
:param working_dir: Directory to work in
:param patches_dir: Optional patches directory
:param series_file: Optional series file
"""
args = ["push", "-a"]
if force:
args.append("-f")
return run_quilt(args, working_dir=working_dir,
patches_dir=patches_dir, series_file=series_file, quiet=quiet)
def quilt_push(working_dir, patch, patches_dir=None, series_file=None, quiet=None):
"""Push a patch.
:param working_dir: Directory to work in
:param patch: Patch to push
:param patches_dir: Optional patches directory
:param series_file: Optional series file
"""
return run_quilt(["push", patch], working_dir=working_dir,
patches_dir=patches_dir, series_file=series_file, quiet=quiet)
def quilt_applied(tree):
"""Find the list of applied quilt patches.
"""
try:
return [patch.rstrip("\n") for patch in
tree.get_file_lines(".pc/applied-patches")
if patch.strip() != ""]
except errors.NoSuchFile:
return []
except (IOError, OSError), e:
if e.errno == errno.ENOENT:
# File has already been removed
return []
raise
def quilt_unapplied(working_dir, patches_dir=None, series_file=None):
"""Find the list of unapplied quilt patches.
:param working_dir: Directory to work in
:param patches_dir: Optional patches directory
:param series_file: Optional series file
"""
try:
unapplied_patches = run_quilt(["unapplied"],
working_dir=working_dir, patches_dir=patches_dir,
series_file=series_file).splitlines()
patch_basenames = []
for patch in unapplied_patches:
patch = os.path.basename(patch)
patch_basenames.append(patch)
return patch_basenames
except QuiltError, e:
if e.retcode == 1:
return []
raise
def quilt_series(tree):
"""Find the list of patches.
:param tree: Tree to read from
"""
try:
return [patch.rstrip("\n") for patch in
tree.get_file_lines("debian/patches/series")
if patch.strip() != ""]
except (IOError, OSError), e:
if e.errno == errno.ENOENT:
# File has already been removed
return []
raise
except errors.NoSuchFile:
return []
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