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import tarfile
import sys
import parser
import mat
import shutil
import os
class TarStripper(parser.Generic_parser):
def __init__(self, realname, filename, parser, editor, backup):
super(TarStripper, self).__init__(realname,
filename, parser, editor, backup)
self.compression = ''
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
self.folder_list = []
def _remove(self, current_file):
'''
remove the meta added by tar itself to the file
'''
current_file.mtime = 0
current_file.uid = 0
current_file.gid = 0
current_file.uname = ''
current_file.gname = ''
return current_file
def remove_all(self):
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
self.tarout = tarfile.open(self.filename + parser.POSTFIX,
'w' + self.compression)
for current_file in self.tarin.getmembers():
self.tarin.extract(current_file)
if current_file.type is '0': #is current_file a regular file ?
#no backup file
class_file = mat.create_class_file(current_file.name, False)
class_file.remove_all()
self.tarout.add(current_file.name, filter=self._remove)
mat.secure_remove(current_file.name)
else:
self.folder_list.insert(0, current_file.name)
self.tarin.close()
self.tarout.close()
for folder in self.folder_list: #delete remainings folders
shutil.rmtree(folder)
if self.backup is False:
mat.secure_remove(self.filename)
os.rename(self.filename + parser.POSTFIX, self.filename)
def is_clean(self):
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
for current_file in self.tarin.getmembers():
self.tarin.extract(current_file)
if current_file.type is '0': #is current_file a regular file ?
#no backup file
class_file = mat.create_class_file(current_file.name, False)
if not class_file.is_clean():
self.folder_list = []
return False
mat.secure_remove(current_file.name)
else:
self.folder_list.insert(0, current_file.name)
self.tarin.close()
for folder in self.folder_list: #delete remainings folders
shutil.rmtree(folder)
self.folder_list = []
return False
def get_meta(self):
self.tarin = tarfile.open(self.filename, 'r' + self.compression)
metadata = {}
for current_file in self.tarin.getmembers():
if current_file.type is '0':
current_meta = {}
current_meta['mtime'] = current_file.mtime
current_meta['uid'] = current_file.uid
current_meta['gid'] = current_file.gid
current_meta['uname'] = current_file.uname
current_meta['gname'] = current_file.gname
metadata[current_file.name] = current_meta
return metadata
class GzipStripper(TarStripper):
def __init__(self, realname, filename, parser, editor, backup):
super(GzipStripper, self).__init__(realname,
filename, parser, editor, backup)
self.compression = ':gz'
class Bzip2Stripper(TarStripper):
def __init__(self, realname, filename, parser, editor, backup):
super(Bzip2Stripper, self).__init__(realname,
filename, parser, editor, backup)
self.compression = ':bz2'
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