158 lines
4.6 KiB
Python
158 lines
4.6 KiB
Python
# vim: ft=python fileencoding=utf-8 sts=4 sw=4 et:
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# Copyright 2014 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
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#
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# This file is part of qutebrowser.
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#
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# qutebrowser 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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# qutebrowser 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 qutebrowser. If not, see <http://www.gnu.org/licenses/>.
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"""HTTP network cache."""
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import os.path
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from PyQt5.QtCore import QStandardPaths
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from PyQt5.QtNetwork import QNetworkDiskCache, QNetworkCacheMetaData
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from qutebrowser.config import config
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from qutebrowser.utils import utils, standarddir, objreg
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class DiskCache(QNetworkDiskCache):
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"""Disk cache which sets correct cache dir and size."""
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def __init__(self, parent=None):
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super().__init__(parent)
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cache_dir = standarddir.get(QStandardPaths.CacheLocation)
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self.setCacheDirectory(os.path.join(cache_dir, 'http'))
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self.setMaximumCacheSize(config.get('storage', 'cache-size'))
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objreg.get('config').changed.connect(self.cache_size_changed)
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def __repr__(self):
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return utils.get_repr(self, size=self.cacheSize(),
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maxsize=self.maximumCacheSize(),
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path=self.cacheDirectory())
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@config.change_filter('storage', 'cache-size')
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def cache_size_changed(self):
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"""Update cache size if the config was changed."""
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self.setMaximumCacheSize(config.get('storage', 'cache-size'))
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def cacheSize(self):
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"""Return the current size taken up by the cache.
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Return:
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An int.
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"""
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if objreg.get('general', 'private-browsing'):
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return 0
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else:
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return super().cacheSize()
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def fileMetaData(self, filename):
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"""Returns the QNetworkCacheMetaData for the cache file filename.
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Args:
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filename: The file name as a string.
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Return:
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A QNetworkCacheMetaData object.
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"""
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if objreg.get('general', 'private-browsing'):
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return QNetworkCacheMetaData()
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else:
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return super().fileMetaData(filename)
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def data(self, url):
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"""Return the data associated with url.
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Args:
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url: A QUrl.
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return:
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A QIODevice or None.
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"""
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if objreg.get('general', 'private-browsing'):
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return None
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else:
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return super().data(url)
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def insert(self, device):
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"""Insert the data in device and the prepared meta data into the cache.
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Args:
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device: A QIODevice.
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"""
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if objreg.get('general', 'private-browsing'):
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return
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else:
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super().insert(device)
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def metaData(self, url):
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"""Return the meta data for the url url.
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Args:
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url: A QUrl.
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Return:
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A QNetworkCacheMetaData object.
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"""
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if objreg.get('general', 'private-browsing'):
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return QNetworkCacheMetaData()
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else:
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return super().metaData(url)
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def prepare(self, meta_data):
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"""Return the device that should be populated with the data.
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Args:
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meta_data: A QNetworkCacheMetaData object.
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Return:
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A QIODevice or None.
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"""
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if objreg.get('general', 'private-browsing'):
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return None
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else:
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return super().prepare(meta_data)
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def remove(self, url):
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"""Remove the cache entry for url.
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Return:
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True on success, False otherwise.
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"""
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if objreg.get('general', 'private-browsing'):
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return False
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else:
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return super().remove(url)
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def updateMetaData(self, meta_data):
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"""Updates the cache meta date for the meta_data's url to meta_data.
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Args:
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meta_data: A QNetworkCacheMetaData object.
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"""
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if objreg.get('general', 'private-browsing'):
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return
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else:
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super().updateMetaData(meta_data)
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def clear(self):
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"""Removes all items from the cache."""
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if objreg.get('general', 'private-browsing'):
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return
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else:
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super().clear()
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