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# vim: set fileencoding=utf-8 :
#
# (C) 2007 Guido Guenther <agx@sigxcpu.org>
"""
Simple class wrappers for the various external commands needed by
git-buildpackage and friends
"""
import subprocess
import sys
import os.path
from errors import GbpError
class CommandExecFailed(Exception):
"""Exception raised by the Command class"""
pass
class Command(object):
"""
Wraps a shell command, so we don't have to store any kind of command line options in
one of the git-buildpackage commands
"""
verbose = False
def __init__(self, cmd, args=[], shell=False):
self.cmd = cmd
self.args = args
self.run_error = "Couldn't run '%s'" % (" ".join([self.cmd] + self.args))
self.shell = shell
def __run(self, args):
"""run self.cmd adding args as additional arguments"""
try:
if self.verbose:
print self.cmd, self.args, args
cmd = [ self.cmd ] + self.args + args
if self.shell: # subprocess.call only cares about the first argument if shell=True
cmd = " ".join(cmd)
retcode = subprocess.call(cmd, shell=self.shell)
if retcode < 0:
print >>sys.stderr, "%s was terminated by signal %d" % (self.cmd, -retcode)
elif retcode > 0:
print >>sys.stderr, "%s returned %d" % (self.cmd, retcode)
except OSError, e:
print >>sys.stderr, "Execution failed:", e
retcode = 1
if retcode:
print >>sys.stderr, self.run_error
return retcode
def __call__(self, args=[]):
if self.__run(args):
raise CommandExecFailed
class RunAtCommand(Command):
"""Run a command in a specific directory"""
def __call__(self, dir='.', *args):
curdir = os.path.abspath(os.path.curdir)
try:
os.chdir(dir)
Command.__call__(self, list(*args))
os.chdir(curdir)
except Exception:
os.chdir(curdir)
raise
class UnpackTarArchive(Command):
"""Wrap tar to Unpack a gzipped tar archive"""
def __init__(self, archive, dir, filter=""):
self.archive = archive
self.dir = dir
exclude = [ "", "--exclude=%s" % filter ][len(filter) > 0]
if archive.lower().endswith(".bz2"):
decompress = "--bzip2"
else:
decompress = "--gzip"
Command.__init__(self, 'tar', [ exclude, '-C', dir, decompress, '-xf', archive ])
self.run_error = "Couldn't unpack %s" % self.archive
class RemoveTree(Command):
"Wrap rm to remove a whole directory tree"
def __init__(self, tree):
self.tree = tree
Command.__init__(self, 'rm', [ '-rf', tree ])
self.run_error = "Couldn't remove %s" % self.tree
class Dch(Command):
"""Wrap dch and set a specific version"""
def __init__(self, version, msg):
args = ['-v', version]
if msg:
args.append(msg)
Command.__init__(self, 'dch', args)
self.run_error = "Dch failed."
class DpkgSourceExtract(Command):
"""
Wrap dpkg-source to extract a Debian source package into a certain
directory, this needs
"""
def __init__(self):
Command.__init__(self, 'dpkg-source', ['-x'])
def __call__(self, dsc, output_dir):
self.run_error = "Couldn't extract %s" % dsc
Command.__call__(self, [dsc, output_dir])
class GitCommand(Command):
"Mother/Father of all git commands"
def __init__(self, cmd, args=[]):
Command.__init__(self, 'git', [cmd] + args)
class GitInitDB(GitCommand):
"""Wrap git init-db"""
def __init__(self):
GitCommand.__init__(self, 'init-db')
self.run_error = "Couldn't init git repository"
class GitShowBranch(GitCommand):
"""Wrap git show-branch"""
def __init__(self):
GitCommand.__init__(self, 'branch')
self.run_error = "Couldn't list branches"
class GitBranch(GitCommand):
"""Wrap git branch"""
def __init__(self):
GitCommand.__init__(self, 'branch')
def __call__(self, branch):
self.run_error = "Couldn't create branch %s" % (branch,)
GitCommand.__call__(self, [branch])
class GitCheckoutBranch(GitCommand):
"""Wrap git checkout in order tos switch to a certain branch"""
def __init__(self, branch):
GitCommand.__init__(self, 'checkout', [branch])
self.branch = branch
self.run_error = "Couldn't switch to %s branch" % self.branch
class GitPull(GitCommand):
"""Wrap git pull"""
def __init__(self, repo, branch):
GitCommand.__init__(self, 'pull', [repo, branch])
self.run_error = "Couldn't pull %s to %s" % (branch, repo)
class GitTag(GitCommand):
"""Wrap git tag"""
def __init__(self, sign_tag=False, keyid=None):
GitCommand.__init__(self,'tag')
self.sign_tag = sign_tag
self.keyid = keyid
def __call__(self, version, msg="Tagging %(version)s"):
self.run_error = "Couldn't tag %s" % (version,)
if self.sign_tag:
if self.keyid:
sign_opts = [ '-u', self.keyid ]
else:
sign_opts = [ '-s' ]
else:
sign_opts = []
GitCommand.__call__(self, sign_opts+[ '-m', msg % locals(), version])
class GitAdd(GitCommand):
"""Wrap git add to add new files"""
def __init__(self):
GitCommand.__init__(self, 'add')
self.run_error = "Couldn't add files"
class GitRm(GitCommand):
"""Wrap git rm to remove files"""
def __init__(self):
GitCommand.__init__(self, 'rm')
self.run_error = "Couldn't remove files"
class GitCommitAll(GitCommand):
"""Wrap git commit to commit all changes"""
def __init__(self, verbose=False):
args = ['-a'] + [ ['-q'], [] ][verbose]
GitCommand.__init__(self, cmd='commit', args=args)
def __call__(self, msg=''):
args = [ [], ['-m', msg] ][len(msg) > 0]
self.run_error = "Couldn't %s %s" % (self.cmd, " ".join(self.args + args))
GitCommand.__call__(self, args)
def copy_from(orig_dir, filter=""):
"""
copy a source tree over via tar
@param orig_dir: where to copy from
@param exclude: tar exclude pattern
@return: list of copied files
@rtype: list
"""
exclude = [ "", "--exclude=%s" % filter ][len(filter) > 0]
try:
p1 = subprocess.Popen(["tar", exclude, "-cSpf", "-", "." ], stdout=subprocess.PIPE, cwd=orig_dir)
p2 = subprocess.Popen(["tar", "-xvSpf", "-" ], stdin=p1.stdout, stdout=subprocess.PIPE)
files = p2.communicate()[0].split('\n')
except OSError, err:
raise GbpError, "Cannot copy files: %s" % err
except ValueError, err:
raise GbpError, "Cannot copy files: %s" % err
if p1.wait() or p2.wait():
raise GbpError, "Cannot copy files, pipe failed."
return [ os.path.normpath(f) for f in files if files ]
# vim:et:ts=4:sw=4:
|
