move file based properties out of core
Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>
This commit is contained in:
Steven Armstrong
parent
f3932bb662
commit
4a3bc72846
1 changed files with 0 additions and 214 deletions
|
|
@ -1,214 +0,0 @@
|
||||||
# -*- coding: utf-8 -*-
|
|
||||||
#
|
|
||||||
# 2010-2011 Steven Armstrong (steven-cdist at armstrong.cc)
|
|
||||||
#
|
|
||||||
# This file is part of cdist.
|
|
||||||
#
|
|
||||||
# cdist 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.
|
|
||||||
#
|
|
||||||
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
|
|
||||||
#
|
|
||||||
#
|
|
||||||
|
|
||||||
import os
|
|
||||||
import collections
|
|
||||||
|
|
||||||
import cdist
|
|
||||||
|
|
||||||
|
|
||||||
class AbsolutePathRequiredError(cdist.Error):
|
|
||||||
def __init__(self, path):
|
|
||||||
self.path = path
|
|
||||||
|
|
||||||
def __str__(self):
|
|
||||||
return 'Absolute path required, got: %s' % self.path
|
|
||||||
|
|
||||||
|
|
||||||
class FileList(collections.MutableSequence):
|
|
||||||
"""A list that stores it's state in a file.
|
|
||||||
|
|
||||||
"""
|
|
||||||
def __init__(self, path, initial=None):
|
|
||||||
if not os.path.isabs(path):
|
|
||||||
raise AbsolutePathRequiredError(path)
|
|
||||||
self._path = path
|
|
||||||
if initial:
|
|
||||||
# delete existing file
|
|
||||||
os.unlink(self._path)
|
|
||||||
for i in initial:
|
|
||||||
self.append(i)
|
|
||||||
|
|
||||||
def __read(self):
|
|
||||||
lines = []
|
|
||||||
try:
|
|
||||||
with open(self._path) as fd:
|
|
||||||
for line in fd:
|
|
||||||
lines.append(line.rstrip('\n'))
|
|
||||||
except EnvironmentError as e:
|
|
||||||
# error ignored
|
|
||||||
pass
|
|
||||||
return lines
|
|
||||||
|
|
||||||
def __write(self, lines):
|
|
||||||
try:
|
|
||||||
with open(self._path, 'w') as fd:
|
|
||||||
for line in lines:
|
|
||||||
fd.write(str(line) + '\n')
|
|
||||||
except EnvironmentError as e:
|
|
||||||
# error ignored
|
|
||||||
raise
|
|
||||||
|
|
||||||
def __repr__(self):
|
|
||||||
return repr(list(self))
|
|
||||||
|
|
||||||
def __getitem__(self, index):
|
|
||||||
return self.__read()[index]
|
|
||||||
|
|
||||||
def __setitem__(self, index, value):
|
|
||||||
lines = self.__read()
|
|
||||||
lines[index] = value
|
|
||||||
self.__write(lines)
|
|
||||||
|
|
||||||
def __delitem__(self, index):
|
|
||||||
lines = self.__read()
|
|
||||||
del lines[index]
|
|
||||||
self.__write(lines)
|
|
||||||
|
|
||||||
def __len__(self):
|
|
||||||
lines = self.__read()
|
|
||||||
return len(lines)
|
|
||||||
|
|
||||||
def insert(self, index, value):
|
|
||||||
lines = self.__read()
|
|
||||||
lines.insert(index, value)
|
|
||||||
self.__write(lines)
|
|
||||||
|
|
||||||
def sort(self):
|
|
||||||
lines = sorted(self)
|
|
||||||
self.__write(lines)
|
|
||||||
|
|
||||||
|
|
||||||
class FileListProperty(FileList):
|
|
||||||
# Descriptor Protocol
|
|
||||||
def __get__(self, obj, objtype=None):
|
|
||||||
if obj is None:
|
|
||||||
return self.__class__
|
|
||||||
return self
|
|
||||||
|
|
||||||
def __set__(self, obj, value):
|
|
||||||
os.unlink(self._path)
|
|
||||||
for item in value:
|
|
||||||
self.append(item)
|
|
||||||
|
|
||||||
def __delete__(self, obj):
|
|
||||||
raise AttributeError("can't delete attribute")
|
|
||||||
|
|
||||||
|
|
||||||
class DirectoryDict(collections.MutableMapping):
|
|
||||||
"""A dict that stores it's state in a directory.
|
|
||||||
|
|
||||||
"""
|
|
||||||
def __init__(self, path, dict=None, **kwargs):
|
|
||||||
if not os.path.isabs(path):
|
|
||||||
raise AbsolutePathRequiredError(path)
|
|
||||||
self._path = path
|
|
||||||
if dict is not None:
|
|
||||||
self.update(dict)
|
|
||||||
if len(kwargs):
|
|
||||||
self.update(kwargs)
|
|
||||||
|
|
||||||
def __repr__(self):
|
|
||||||
return repr(dict(self))
|
|
||||||
|
|
||||||
def __getitem__(self, key):
|
|
||||||
try:
|
|
||||||
with open(os.path.join(self._path, key), "r") as fd:
|
|
||||||
return fd.read().rstrip('\n')
|
|
||||||
except EnvironmentError:
|
|
||||||
raise KeyError(key)
|
|
||||||
|
|
||||||
def __setitem__(self, key, value):
|
|
||||||
with open(os.path.join(self._path, key), "w") as fd:
|
|
||||||
fd.write(str(value))
|
|
||||||
|
|
||||||
def __delitem__(self, key):
|
|
||||||
os.remove(os.path.join(self._path, key))
|
|
||||||
|
|
||||||
def __iter__(self):
|
|
||||||
return iter(os.listdir(self._path))
|
|
||||||
|
|
||||||
def __len__(self):
|
|
||||||
return len(os.listdir(self._path))
|
|
||||||
|
|
||||||
|
|
||||||
class DirectoryDictProperty(DirectoryDict):
|
|
||||||
# Descriptor Protocol
|
|
||||||
def __get__(self, obj, objtype=None):
|
|
||||||
if obj is None:
|
|
||||||
return self.__class__
|
|
||||||
return self
|
|
||||||
|
|
||||||
def __set__(self, obj, value):
|
|
||||||
for name in self.keys():
|
|
||||||
del self[name]
|
|
||||||
if value is not None:
|
|
||||||
self.update(value)
|
|
||||||
|
|
||||||
def __delete__(self, obj):
|
|
||||||
raise AttributeError("can't delete attribute")
|
|
||||||
|
|
||||||
|
|
||||||
class FileBooleanProperty(object):
|
|
||||||
def __init__(self, path):
|
|
||||||
"""
|
|
||||||
:param path: string or callable
|
|
||||||
|
|
||||||
Usage:
|
|
||||||
|
|
||||||
class Foo(object):
|
|
||||||
changed = FileBoolean(lambda obj: os.path.join(obj.absolute_path, 'changed'))
|
|
||||||
other_boolean = FileBoolean('/tmp/other_boolean')
|
|
||||||
|
|
||||||
def __init__(self):
|
|
||||||
self.absolute_path = '/tmp/foo_boolean'
|
|
||||||
|
|
||||||
"""
|
|
||||||
self._path = path
|
|
||||||
|
|
||||||
def _get_path(self, *args, **kwargs):
|
|
||||||
path = self._path
|
|
||||||
if callable(path):
|
|
||||||
return path(*args, **kwargs)
|
|
||||||
if not os.path.isabs(path):
|
|
||||||
raise AbsolutePathRequiredError(path)
|
|
||||||
return path
|
|
||||||
|
|
||||||
# Descriptor Protocol
|
|
||||||
def __get__(self, obj, objtype=None):
|
|
||||||
if obj is None:
|
|
||||||
return self.__class__
|
|
||||||
path = self._get_path(obj)
|
|
||||||
return os.path.isfile(path)
|
|
||||||
|
|
||||||
def __set__(self, obj, value):
|
|
||||||
path = self._get_path(obj)
|
|
||||||
if value:
|
|
||||||
open(path, "w").close()
|
|
||||||
else:
|
|
||||||
try:
|
|
||||||
os.remove(path)
|
|
||||||
except EnvironmentError:
|
|
||||||
# ignore
|
|
||||||
pass
|
|
||||||
|
|
||||||
def __delete__(self, obj):
|
|
||||||
raise AttributeError("can't delete attribute")
|
|
||||||
Loading…
Reference in a new issue