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import subprocess, re, os, tempfile
class GitError(Exception):
pass
class SHAError(GitError):
pass
class ExecutionError(GitError):
def __init__(self, errcode):
self.error_code = errcode
def _check(process):
if process.returncode != 0:
raise ExecutionError(process.returncode)
_sha_re = re.compile('^[0-9a-fA-F]*$')
def rev_parse(rev='HEAD', tree=None):
process = subprocess.Popen(['git', 'rev-parse', rev],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
sha = stdout.strip()
if not _sha_re.match(sha):
raise SHAError()
return sha
def clean(tree=None):
cmd = ['git', 'clean', '-f', '-x', '-d', '-q']
process = subprocess.Popen(cmd,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
def status(tree=None):
'''
For interpretation of the porcelain output refer to
the git status(1) man page. In summary the first column is the
index state, the second represents the working tree state and
the third column are files in cases of renames. This gives back
None in case no changes are present, otherwise it returns a list
of dict entries with key values: index, work_tree, and files. The
files are a list of all files found on that entry, in case of a rename
this would consist of a list of 2 files.
As an example if you had this on your git status:
R udev/foo.sh -> poo/foo.sh
D scripts/bar.sh
?? .poo.py.swp
This would be transposed into the following dict:
results = status(tree=your_git_tree_path)
if not results:
return 0
for entry in results:
print entry
{'files': [' udev/foo.sh', 'poo/foo.sh'], 'index': 'R', 'work_tree': ' '}
{'files': [' scripts/bar.sh'], 'index': 'D', 'work_tree': ' '}
{'files': [' .poo.py.swp'], 'index': '?', 'work_tree': '?'}
'''
def split_status(entry):
if len(entry) == 0:
return None
if len(entry) == 1:
return dict(index=entry[0], work_tree=None, files=None)
if len(entry) == 2:
return dict(index=entry[0], work_tree=entry[1], files=None)
else:
return dict(index=entry[0], work_tree=entry[1],
files=entry[2:].split(' -> '))
cmd = ['git', 'status', '--porcelain']
process = subprocess.Popen(cmd,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True,
universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
list_status = stdout.split('\n')
if (len(list_status) == 1 and list_status[0] == ''):
return None
return [split_status(entry) for entry in list_status]
def describe(rev='HEAD', tree=None, extra_args=[]):
cmd = ['git', 'describe', '--always']
cmd.extend(extra_args)
if rev is not None:
cmd.append(rev)
process = subprocess.Popen(cmd,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
return stdout.strip()
def init(tree=None):
process = subprocess.Popen(['git', 'init'],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
def add(path, tree=None):
process = subprocess.Popen(['git', 'add', path],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
def commit_all(message, tree=None):
add('.', tree=tree)
process = subprocess.Popen(['git', 'commit', '--allow-empty', '-a', '-m', message],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
def ls_tree(rev, files, tree=None):
process = subprocess.Popen(['git', 'ls-tree', '-z', '-r', rev, '--', ] + list(files),
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
files = stdout.split('\0')
ret = []
for f in files:
if not f:
continue
meta, f = f.split('\t', 1)
meta = meta.split()
meta.append(f)
ret.append(meta)
process.wait()
_check(process)
return ret
def get_blob(blob, outf, tree=None):
try:
import git, gitdb
r = git.Repo(path=tree)
b = r.rev_parse(blob + '^{blob}')
b.stream_data(outf)
except ImportError:
process = subprocess.Popen(['git', 'show', blob],
stdout=outf, close_fds=True, cwd=tree)
process.wait()
_check(process)
def clone(gittree, outputdir, options=[]):
process = subprocess.Popen(['git', 'clone'] + options + [gittree, outputdir])
process.wait()
_check(process)
def set_origin(giturl, gitdir):
process = subprocess.Popen(['git', 'remote', 'rm', 'origin'],
close_fds=True, universal_newlines=True, cwd=gitdir)
process.wait()
process = subprocess.Popen(['git', 'remote', 'add', 'origin', giturl],
close_fds=True, universal_newlines=True, cwd=gitdir)
process.wait()
_check(process)
def remote_update(gitdir):
process = subprocess.Popen(['git', 'remote', 'update'],
close_fds=True, universal_newlines=True, cwd=gitdir)
process.wait()
_check(process)
def shortlog(from_commit, to_commit, tree=None):
process = subprocess.Popen(['git', 'shortlog', from_commit + '..' + to_commit],
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
close_fds=True, universal_newlines=True,
cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
return stdout
def commit_env_vars(commitid, tree=None):
process = subprocess.Popen(['git', 'show', '--name-only',
'--format=format:GIT_AUTHOR_NAME=%an%nGIT_AUTHOR_EMAIL=%ae%nGIT_AUTHOR_DATE=%aD%x00',
commitid],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True,
cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
data = stdout.split('\x00')[0]
vals = data.split('\n')
d = {}
for k, v in map(lambda x: x.split('=', 1), vals):
d[k] = v
return d
def commit_message(commitid, tree=None):
process = subprocess.Popen(['git', 'show', '--name-only',
'--format=format:%s%n%n%b%x00', commitid],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True,
cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
return stdout.split('\x00')[0]
def remove_config(cfg, tree=None):
process = subprocess.Popen(['git', 'config', '--unset-all', cfg],
close_fds=True, universal_newlines=True, cwd=tree)
process.wait()
_check(process)
def ls_remote(branch, tree=None, remote='origin'):
process = subprocess.Popen(['git', 'ls-remote', '--exit-code', remote, 'refs/heads/' + branch],
stdout=subprocess.PIPE,
close_fds=True, universal_newlines=True, cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
sha = stdout.split()[0]
if not _sha_re.match(sha):
raise SHAError()
return sha
def add(fn, tree=None):
process = subprocess.Popen(['git', 'add', fn], cwd=tree,
close_fds=True, universal_newlines=True)
process.wait()
_check(process)
def commit(msg, tree=None, env = {}, opts=[]):
stdin = tempfile.NamedTemporaryFile(mode='wr')
stdin.write(msg)
stdin.seek(0)
process = subprocess.Popen(['git', 'commit', '--file=-'] + opts,
stdin=stdin.file, universal_newlines=True, env=env,
cwd=tree)
process.wait()
_check(process)
def push(opts=[], tree=None):
process = subprocess.Popen(['git', 'push'] + opts,
close_fds=True, universal_newlines=True, cwd=tree)
process.wait()
_check(process)
def log_commits(from_commit, to_commit, tree=None):
process = subprocess.Popen(['git', 'log', '--first-parent', '--format=format:%H',
from_commit + '..' + to_commit],
stdout=subprocess.PIPE,
close_fds=True, universal_newlines=True,
cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
vals = stdout.split()
vals.reverse()
return vals
def commit_env_vars(commitid, tree=None):
process = subprocess.Popen(['git', 'show', '--name-only',
'--format=format:GIT_AUTHOR_NAME=%an%nGIT_AUTHOR_EMAIL=%ae%nGIT_AUTHOR_DATE=%aD%x00',
commitid],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
close_fds=True, universal_newlines=True,
cwd=tree)
stdout = process.communicate()[0]
process.wait()
_check(process)
data = stdout.split('\x00')[0]
vals = data.split('\n')
d = {}
for k, v in map(lambda x: x.split('=', 1), vals):
d[k] = v
return d
def rm(opts=[], tree=None):
process = subprocess.Popen(['git', 'rm'] + opts,
close_fds=True, universal_newlines=True, cwd=tree)
process.wait()
_check(process)
def reset(opts=[], tree=None):
process = subprocess.Popen(['git', 'reset'] + opts,
close_fds=True, universal_newlines=True, cwd=tree)
process.wait()
_check(process)
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