/usr/share/bleachbit/bleachbit/Command.py is in bleachbit 0.9.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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## BleachBit
## Copyright (C) 2011 Andrew Ziem
## http://bleachbit.sourceforge.net
##
## 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 3 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, see <http://www.gnu.org/licenses/>.
"""
Command design pattern implementation for cleaning
"""
import os
import types
import FileUtilities
from sqlite3 import DatabaseError
from Common import _
if 'nt' == os.name:
import Windows
else:
from General import WindowsError
def whitelist(path):
"""Return information that this file was whitelisted"""
ret = { \
# TRANSLATORS: This is the label in the log indicating was
# skipped because it matches the whitelist
'label' : _('Skip'),
'n_deleted' : 0,
'n_special' : 0,
'path' : path,
'size' : 0 }
return ret
class Delete:
"""Delete a single file or directory. Obey the user
preference regarding shredding."""
def __init__(self, path):
"""Create a Delete instance to delete 'path'"""
self.path = path
self.shred = False
def execute(self, really_delete):
"""Make changes and return results"""
if FileUtilities.whitelisted(self.path):
yield whitelist(self.path)
return
ret = { \
# TRANSLATORS: This is the label in the log indicating will be
# deleted (for previews) or was actually deleted
'label' : _('Delete'),
'n_deleted' : 1,
'n_special' : 0,
'path' : self.path,
'size' : FileUtilities.getsize(self.path) }
if really_delete:
try:
FileUtilities.delete(self.path, self.shred)
except WindowsError, e:
# WindowsError: [Error 32] The process cannot access the file because it is being
# used by another process: u'C:\\Documents and Settings\\username\\Cookies\\index.dat'
if 32 != e.winerror and 5 != e.winerror:
raise
try:
Windows.delete_locked_file(self.path)
except:
raise
else:
# TRANSLATORS: The file will be deleted when the
# system reboots
ret['label'] = _('Mark for deletion')
yield ret
class Function:
"""Execute a simple Python function"""
def __init__(self, path, func, label):
"""Path is a pathname that exists or None. If
it exists, func takes the pathname. Otherwise,
function returns the size."""
self.path = path
self.func = func
self.label = label
try:
assert(isinstance(func, types.FunctionType))
except AssertionError:
raise AssertionError('Expected MethodType but got %s' % type(func))
def execute(self, really_delete):
if None != self.path and FileUtilities.whitelisted(self.path):
yield whitelist(self.path)
return
ret = { \
'label' : self.label,
'n_deleted' : 0,
'n_special' : 1,
'path' : self.path,
'size' : None }
if really_delete:
if None == self.path:
# Function takes no path. It returns the size.
func_ret = self.func()
if isinstance(func_ret, types.GeneratorType):
# function returned generator
for func_ret in self.func():
if True == func_ret or isinstance(func_ret, tuple):
# Return control to GTK idle loop.
# If tuple, then display progress.
yield func_ret
# either way, func_ret should be an integer
assert(isinstance(func_ret, (int, long)))
ret['size'] = func_ret
else:
# Function takes a path. We check the size.
oldsize = FileUtilities.getsize(self.path)
try:
self.func(self.path)
except DatabaseError, e:
if -1 == e.message.find('file is encrypted or is not a database') and \
-1 == e.message.find('or missing database'):
raise
print 'Warning:', e.message
return
try:
newsize = FileUtilities.getsize(self.path)
except OSError, e:
if 2 == e.errno:
# file does not exist
newsize = 0
else:
raise
ret['size'] = oldsize - newsize
yield ret
class Ini:
"""Remove sections or parameters from a .ini file"""
def __init__(self, path, section, parameter):
"""Create the instance"""
self.path = path
self.section = section
self.parameter = parameter
def execute(self, really_delete):
"""Make changes and return results"""
if FileUtilities.whitelisted(self.path):
yield whitelist(self.path)
return
ret = { \
# TRANSLATORS: Parts of this file will be deleted
'label' : _('Clean file'),
'n_deleted' : 0,
'n_special' : 1,
'path' : self.path,
'size' : None }
if really_delete:
oldsize = FileUtilities.getsize(self.path)
FileUtilities.clean_ini(self.path, self.section, self.parameter)
newsize = FileUtilities.getsize(self.path)
ret['size'] = oldsize - newsize
yield ret
class Json:
"""Remove a key from a JSON configuration file"""
def __init__(self, path, address):
"""Create the instance"""
self.path = path
self.address = address
def execute(self, really_delete):
"""Make changes and return results"""
if FileUtilities.whitelisted(self.path):
yield whitelist(self.path)
return
ret = { \
'label' : _('Clean file'),
'n_deleted' : 0,
'n_special' : 1,
'path' : self.path,
'size' : None }
if really_delete:
oldsize = FileUtilities.getsize(self.path)
FileUtilities.clean_json(self.path, self.address)
newsize = FileUtilities.getsize(self.path)
ret['size'] = oldsize - newsize
yield ret
class Shred(Delete):
"""Shred a single file"""
def __init__(self, path):
"""Create an instance to shred 'path'"""
Delete.__init__(self, path)
self.shred = True
class Truncate(Delete):
"""Truncate a single file"""
def execute(self, really_delete):
"""Make changes and return results"""
if FileUtilities.whitelisted(self.path):
yield whitelist(self.path)
return
ret = { \
# TRANSLATORS: The file will be truncated to 0 bytes in length
'label' : _('Truncate'),
'n_deleted' : 1,
'n_special' : 0,
'path' : self.path,
'size' : FileUtilities.getsize(self.path) }
if really_delete:
f = open(self.path, 'wb')
f.truncate(0)
yield ret
class Winreg:
"""Clean Windows registry"""
def __init__(self, keyname, valuename):
"""Create the Windows registry cleaner"""
self.keyname = keyname
self.valuename = valuename
def execute(self, really_delete):
"""Execute the Windows registry cleaner"""
if 'nt' != os.name:
raise StopIteration
_str = None # string representation
ret = None # return value meaning 'deleted' or 'delete-able'
if self.valuename:
_str = '%s<%s>' % (self.keyname, self.valuename)
ret = Windows.delete_registry_value(self.keyname, \
self.valuename, really_delete)
else:
ret = Windows.delete_registry_key(self.keyname, really_delete)
_str = self.keyname
if not ret:
# Nothing to delete or nothing was deleted. This return
# makes the auto-hide feature work nicely.
raise StopIteration
ret = { \
'label' : _('Delete registry key'),
'n_deleted' : 0,
'n_special' : 1,
'path' : _str,
'size' : 0 }
yield ret
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