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# Copyright (C) 2008-2009 Ben Finney <benf@cybersource.com.au>
# Chris Ball <cjb@laptop.org>
# Gianluca Montecchi <gian@grys.it>
# W. Trevor King <wking@drexel.edu>
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
Git backend.
"""
import os
import os.path
import re
import shutil
import unittest
import libbe
import libbe.ui.util.user
import base
if libbe.TESTING == True:
import doctest
import sys
def new():
return Git()
class Git(base.VCS):
name='git'
client='git'
def __init__(self, *args, **kwargs):
base.VCS.__init__(self, *args, **kwargs)
self.versioned = True
def _vcs_version(self):
status,output,error = self._u_invoke_client('--version')
return output
def _vcs_get_user_id(self):
status,output,error = \
self._u_invoke_client('config', 'user.name', expect=(0,1))
if status == 0:
name = output.rstrip('\n')
else:
name = ''
status,output,error = \
self._u_invoke_client('config', 'user.email', expect=(0,1))
if status == 0:
email = output.rstrip('\n')
else:
email = ''
if name != '' or email != '': # got something!
# guess missing info, if necessary
if name == '':
name = libbe.ui.util.user.get_fallback_username()
if email == '':
email = libe.ui.util.user.get_fallback_email()
return libbe.ui.util.user.create_user_id(name, email)
return None # Git has no infomation
def _vcs_detect(self, path):
if self._u_search_parent_directories(path, '.git') != None :
return True
return False
def _vcs_root(self, path):
"""Find the root of the deepest repository containing path."""
# Assume that nothing funny is going on; in particular, that we aren't
# dealing with a bare repo.
if os.path.isdir(path) != True:
path = os.path.dirname(path)
status,output,error = self._u_invoke_client('rev-parse', '--git-dir',
cwd=path)
gitdir = os.path.join(path, output.rstrip('\n'))
dirname = os.path.abspath(os.path.dirname(gitdir))
return dirname
def _vcs_init(self, path):
self._u_invoke_client('init', cwd=path)
def _vcs_destroy(self):
vcs_dir = os.path.join(self.repo, '.git')
if os.path.exists(vcs_dir):
shutil.rmtree(vcs_dir)
def _vcs_add(self, path):
if os.path.isdir(path):
return
self._u_invoke_client('add', path)
def _vcs_remove(self, path):
if not os.path.isdir(self._u_abspath(path)):
self._u_invoke_client('rm', '-f', path)
def _vcs_update(self, path):
self._vcs_add(path)
def _vcs_get_file_contents(self, path, revision=None):
if revision == None:
return base.VCS._vcs_get_file_contents(self, path, revision)
else:
arg = '%s:%s' % (revision,path)
status,output,error = self._u_invoke_client('show', arg)
return output
def _vcs_commit(self, commitfile, allow_empty=False):
args = ['commit', '--all', '--file', commitfile]
if allow_empty == True:
args.append('--allow-empty')
status,output,error = self._u_invoke_client(*args)
else:
kwargs = {'expect':(0,1)}
status,output,error = self._u_invoke_client(*args, **kwargs)
strings = ['nothing to commit',
'nothing added to commit']
if self._u_any_in_string(strings, output) == True:
raise base.EmptyCommit()
revision = None
revline = re.compile('(.*) (.*)[:\]] (.*)')
match = revline.search(output)
assert match != None, output+error
assert len(match.groups()) == 3
revision = match.groups()[1]
full_revision = self._vcs_revision_id(-1)
assert full_revision.startswith(revision), \
'Mismatched revisions:\n%s\n%s' % (revision, full_revision)
return full_revision
def _vcs_revision_id(self, index):
args = ['rev-list', '--first-parent', '--reverse', 'HEAD']
kwargs = {'expect':(0,128)}
status,output,error = self._u_invoke_client(*args, **kwargs)
if status == 128:
if error.startswith("fatal: ambiguous argument 'HEAD': unknown "):
return None
raise base.CommandError(args, status, stderr=error)
commits = output.splitlines()
try:
if index > 0:
return commits[index-1]
elif index < 0:
return commits[index]
else:
return None
except IndexError:
return None
if libbe.TESTING == True:
base.make_vcs_testcase_subclasses(Git, sys.modules[__name__])
unitsuite =unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
suite = unittest.TestSuite([unitsuite, doctest.DocTestSuite()])
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