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|
#!/usr/bin/env python
#
# Copyright (c) 2018 Yousong Zhou <yszhou4tech@gmail.com>
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
import argparse
import calendar
import datetime
import errno
import fcntl
import hashlib
import json
import os
import os.path
import re
import shutil
import ssl
import subprocess
import sys
import time
import urllib2
TMPDIR = os.environ.get('TMP_DIR') or '/tmp'
TMPDIR_DL = os.path.join(TMPDIR, 'dl')
class PathException(Exception): pass
class DownloadGitHubError(Exception): pass
class Path(object):
"""Context class for preparing and cleaning up directories.
If ```preclean` is ``False``, ``path`` will NOT be removed on context enter
If ``path`` ``isdir``, then it will be created on context enter.
If ``keep`` is True, then ``path`` will NOT be removed on context exit
"""
def __init__(self, path, isdir=True, preclean=False, keep=False):
self.path = path
self.isdir = isdir
self.preclean = preclean
self.keep = keep
def __enter__(self):
if self.preclean:
self.rm_all(self.path)
if self.isdir:
self.mkdir_all(self.path)
return self
def __exit__(self, exc_type, exc_value, traceback):
if not self.keep:
self.rm_all(self.path)
@staticmethod
def mkdir_all(path):
"""Same as mkdir -p."""
names = os.path.split(path)
p = ''
for name in names:
p = os.path.join(p, name)
Path._mkdir(p)
@staticmethod
def _rmdir_dir(dir_):
names = Path._listdir(dir_)
for name in names:
p = os.path.join(dir_, name)
Path.rm_all(p)
Path._rmdir(dir_)
@staticmethod
def _mkdir(path):
Path._os_func(os.mkdir, path, errno.EEXIST)
@staticmethod
def _rmdir(path):
Path._os_func(os.rmdir, path, errno.ENOENT)
@staticmethod
def _remove(path):
Path._os_func(os.remove, path, errno.ENOENT)
@staticmethod
def _listdir(path):
return Path._os_func(os.listdir, path, errno.ENOENT, default=[])
@staticmethod
def _os_func(func, path, errno, default=None):
"""Call func(path) in an idempotent way.
On exception ``ex``, if the type is OSError and ``ex.errno == errno``,
return ``default``, otherwise, re-raise
"""
|
