# 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 re
import sys
import unittest
import doctest
import vcs
def new():
return Git()
class Git(vcs.VCS):
name="git"
client="git"
versioned=True
def _vcs_version(self):
status,output,error = self._u_invoke_client("--version")
return output
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_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 = self._u_get_fallback_username()
if email == "":
email = self._u_get_fallback_email()
return self._u_create_id(name, email)
return None # Git has no infomation
def _vcs_set_user_id(self, value):
name,email = self._u_parse_id(value)
if email != None:
self._u_invoke_client("config", "user.email", email)
self._u_invoke_client("config", "user.name", name)
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, binary=False):
if revision == None:
return vcs.VCS._vcs_get_file_contents(self, path, revision, binary=binary)
else:
arg = "%s:%s" % (revision,path)
status,output,error = self._u_invoke_client("show", arg)
return output
def _vcs_duplicate_repo(self, directory, revision=None):
if revision==None:
vcs.VCS._vcs_duplicate_repo(self, directory, revision)
else:
self._u_invoke_client("clone", "--no-checkout", ".", directory)
self._u_invoke_client("checkout", revision, cwd=directory)
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 vcs.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 vcs.CommandError(args, status, stderr=error)
commits = output.splitlines()
try:
return commits[index]
except IndexError:
return None
vcs.make_vcs_testcase_subclasses(Git, sys.modules[__name__])
unitsuite = unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
suite = unittest.TestSuite([unitsuite, doctest.DocTestSuite()])
