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# utils.py
# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
import os
import re
import sys
import time
import stat
import shutil
import platform
import getpass
import threading
# NOTE: Some of the unused imports might be used/imported by others.
# Handle once test-cases are back up and running.
from .exc import InvalidGitRepositoryError
from .compat import (
MAXSIZE,
defenc,
PY3
)
# Most of these are unused here, but are for use by git-python modules so these
# don't see gitdb all the time. Flake of course doesn't like it.
from gitdb.util import ( # NOQA
make_sha,
LockedFD,
file_contents_ro,
LazyMixin,
to_hex_sha,
to_bin_sha
)
__all__ = ("stream_copy", "join_path", "to_native_path_windows", "to_native_path_linux",
"join_path_native", "Stats", "IndexFileSHA1Writer", "Iterable", "IterableList",
"BlockingLockFile", "LockFile", 'Actor', 'get_user_id', 'assure_directory_exists',
'RemoteProgress', 'rmtree', 'WaitGroup', 'unbare_repo')
#{ Utility Methods
def unbare_repo(func):
"""Methods with this decorator raise InvalidGitRepositoryError if they
encounter a bare repository"""
def wrapper(self, *args, **kwargs):
if self.repo.bare:
raise InvalidGitRepositoryError("Method '%s' cannot operate on bare repositories" % func.__name__)
# END bare method
return func(self, *args, **kwargs)
# END wrapper
wrapper.__name__ = func.__name__
return wrapper
def rmtree(path):
"""Remove the given recursively.
:note: we use shutil rmtree but adjust its behaviour to see whether files that
couldn't be deleted are read-only. Windows will not remove them in that case"""
def onerror(func, path, exc_info):
if not os.access(path, os.W_OK):
# Is the error an access error ?
os.chmod(path, stat.S_IWUSR)
func(path)
else:
raise
# END end onerror
return shutil.rmtree(path, False, onerror)
def stream_copy(source, destination, chunk_size=512 * 1024):
"""Copy all data from the source stream into the destination stream in chunks
of size chunk_size
:return: amount of bytes written"""
br = 0
while True:
chunk = source.read(chunk_size)
destination.write(chunk)
br += len(chunk)
if len(chunk) < chunk_size:
break
# END reading output stream
return br
def join_path(a, *p):
"""Join path tokens together similar to os.path.join, but always use
'/' instead of possibly '\' on windows."""
path = a
for b in p:
if len(b) == 0:
continue
if b.startswith('/'):
path += b[1:]
elif path == '' or path.endswith('/'):
path += b
else:
path += '/' + b
# END for each path token to add
return path
if sys.platform.startswith('win'):
def to_native_path_windows(path):
return path.replace('/', '\\')
def to_native_path_linux(path):
return path.replace('\\', '/')
to_native_path = to_native_path_windows
else:
# no need for any work on linux
def to_native_path_linux(path):
return path
to_native_path = to_native_path_linux
def join_path_native(a, *p):
"""
As join path, but makes sure an OS native path is returned. This is only
needed to play it safe on my dear windows and to assure nice paths that only
use '\'"""
return to_native_path(join_path(a, *p))
def assure_directory_exists(path, is_file=False):
"""Assure that the directory pointed to by path exists.
:param is_file: If True, path is assumed to be a file and handled correctly.
Otherwise it must be a directory
:return: True if the directory was created, False if it already existed"""
if is_file:
path = os.path.dirname(path)
# END handle file
if not os.path.isdir(path):
os.makedirs(path)
return True
return False
def get_user_id():
""":return: string identifying the currently active system user as name@node"""
return "%s@%s" % (getpass.getuser(), platform.node())
def finalize_process(proc):
"""Wait for the process (clone, fetch, pull or push) and handle its errors accordingly"""
proc.wait()
#} END utilities
#{ Classes
class RemoteProgress(object):
"""
Handler providing an interface to parse progress information emitted by git-push
and git-fetch and to dispatch callbacks allowing subclasses to react to the progress.
"""
_num_op_codes = 8
BEGIN, END, COUNTING, COMPRESSING, WRITING, RECEIVING, RESOLVING, FINDING_SOURCES = \
[1