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116 lines
3.4 KiB
Python
116 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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#
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# This file is part of Radicale Server - Calendar Server
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# Copyright © 2012 Guillaume Ayoub
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radicale. If not, see <http://www.gnu.org/licenses/>.
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"""
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Filesystem storage backend.
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"""
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import codecs
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import os
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import json
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import time
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from contextlib import contextmanager
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from radicale import config, ical
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FOLDER = os.path.expanduser(config.get("storage", "filesystem_folder"))
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# This function overrides the builtin ``open`` function for this module
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# pylint: disable=W0622
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def open(path, mode="r"):
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abs_path = os.path.join(FOLDER, path.replace("/", os.sep))
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return codecs.open(abs_path, mode, config.get("encoding", "stock"))
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# pylint: enable=W0622
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class Calendar(ical.Calendar):
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@property
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def _path(self):
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"""Absolute path of the file at local ``path``."""
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return os.path.join(FOLDER, self.path.replace("/", os.sep))
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@property
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def _props_path(self):
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"""Absolute path of the file storing the calendar properties."""
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return self._path + ".props"
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def _create_dirs(self):
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"""Create folder storing the calendar if absent."""
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if not os.path.exists(os.path.dirname(self._path)):
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os.makedirs(os.path.dirname(self._path))
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def save(self, text):
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self._create_dirs()
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open(self._path, "w").write(text)
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def delete(self):
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os.remove(self._path)
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os.remove(self._props_path)
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@property
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def text(self):
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try:
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return open(self._path).read()
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except IOError:
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return ""
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@classmethod
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def children(cls, path):
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abs_path = os.path.join(FOLDER, path.replace("/", os.sep))
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for filename in next(os.walk(abs_path))[2]:
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if cls.is_collection(path):
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yield cls(path)
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@classmethod
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def is_collection(cls, path):
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abs_path = os.path.join(FOLDER, path.replace("/", os.sep))
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return os.path.isdir(abs_path)
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@classmethod
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def is_item(cls, path):
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abs_path = os.path.join(FOLDER, path.replace("/", os.sep))
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return os.path.isfile(abs_path)
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@property
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def last_modified(self):
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# Create calendar if needed
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if not os.path.exists(self._path):
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self.write()
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modification_time = time.gmtime(os.path.getmtime(self._path))
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return time.strftime("%a, %d %b %Y %H:%M:%S +0000", modification_time)
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@property
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@contextmanager
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def props(self):
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# On enter
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properties = {}
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if os.path.exists(self._props_path):
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with open(self._props_path) as prop_file:
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properties.update(json.load(prop_file))
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yield properties
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# On exit
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self._create_dirs()
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with open(self._props_path, 'w') as prop_file:
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json.dump(properties, prop_file)
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ical.Calendar = Calendar
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