9710e3cc7c
* morituri/rip/cd.py: * morituri/common/accurip.py (added): Add a module for handling a cache of AccurateRip results. Use it.
90 lines
2.6 KiB
Python
90 lines
2.6 KiB
Python
# -*- Mode: Python -*-
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# vi:si:et:sw=4:sts=4:ts=4
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# Morituri - for those about to RIP
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# Copyright (C) 2009 Thomas Vander Stichele
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# This file is part of morituri.
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#
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# morituri 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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# morituri 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 morituri. If not, see <http://www.gnu.org/licenses/>.
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import os
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import urlparse
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import urllib2
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from morituri.common import log
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from morituri.image import image
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_CACHE_DIR = os.path.join(os.path.expanduser('~'), '.morituri', 'cache')
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class AccuCache(log.Loggable):
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def __init__(self):
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if not os.path.exists(_CACHE_DIR):
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self.debug('Creating cache directory %s', _CACHE_DIR)
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os.makedirs(_CACHE_DIR)
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def _getPath(self, url):
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# split path starts with /
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return os.path.join(_CACHE_DIR, urlparse.urlparse(url)[2][1:])
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def retrieve(self, url, force=False):
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self.debug("Retrieving AccurateRip URL %s", url)
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path = self._getPath(url)
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self.debug("Cached path: %s", path)
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if not os.path.exists(path):
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self.debug("%s does not exist, downloading", path)
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self.download(url)
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if not os.path.exists(path):
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self.debug("%s does not exist, not in database", path)
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return None
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data = self._read(url)
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return image.getAccurateRipResponses(data)
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def download(self, url):
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# FIXME: download url as a task too
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responses = []
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import urllib2
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try:
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handle = urllib2.urlopen(url)
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data = handle.read()
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except urllib2.HTTPError, e:
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if e.code == 404:
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return None
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else:
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raise
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self._cache(url, data)
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return data
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def _cache(self, url, data):
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path = self._getPath(url)
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os.makedirs(os.path.dirname(path))
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handle = open(path, 'wb')
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handle.write(data)
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handle.close()
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def _read(self, url):
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self.debug("Reading %s from cache", url)
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path = self._getPath(url)
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handle = open(path, 'rb')
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data = handle.read()
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handle.close()
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return data
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