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@ -102,28 +102,8 @@ class Song: |
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self.default_lang = config["lang"] |
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self.default_lang = config["lang"] |
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self.config = config |
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self.config = config |
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if self.datadir and self.config['_cache']: |
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if self.config['_cache'] and self._cache_retrieved(): |
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# Only songs in datadirs are cached |
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return |
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self._filehash = hashlib.md5( |
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open(self.fullpath, 'rb').read() |
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).hexdigest() |
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if os.path.exists(cached_name(datadir, subpath)): |
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try: |
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cached = pickle.load(open( |
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cached_name(datadir, subpath), |
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'rb', |
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)) |
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if ( |
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cached['_filehash'] == self._filehash |
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and cached['_version'] == self.CACHE_VERSION |
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): |
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for attribute in self.cached_attributes: |
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setattr(self, attribute, cached[attribute]) |
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return |
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except: # pylint: disable=bare-except |
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LOGGER.warning("Could not use cached version of {}.".format( |
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self.fullpath |
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)) |
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# Data extraction from the latex song |
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# Data extraction from the latex song |
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self.titles = [] |
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self.titles = [] |
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@ -149,11 +129,39 @@ class Song: |
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# Cache management |
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# Cache management |
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self._version = self.CACHE_VERSION |
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self._version = self.CACHE_VERSION |
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self._write_cache() |
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if self.config['_cache']: |
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self._write_cache() |
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def _cache_retrieved(self): |
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"""If relevant, retrieve self from the cache.""" |
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if self.datadir: |
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# Only songs in datadirs are cached |
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self._filehash = hashlib.md5( |
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open(self.fullpath, 'rb').read() |
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).hexdigest() |
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if os.path.exists(cached_name(datadir, subpath)): |
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try: |
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cached = pickle.load(open( |
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cached_name(datadir, subpath), |
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'rb', |
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)) |
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if ( |
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cached['_filehash'] == self._filehash |
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and cached['_version'] == self.CACHE_VERSION |
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): |
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for attribute in self.cached_attributes: |
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setattr(self, attribute, cached[attribute]) |
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return True |
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except: # pylint: disable=bare-except |
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LOGGER.warning("Could not use cached version of {}.".format( |
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self.fullpath |
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)) |
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return False |
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def _write_cache(self): |
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def _write_cache(self): |
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"""If relevant, write a dumbed down version of self to the cache.""" |
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"""If relevant, write a dumbed down version of self to the cache.""" |
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if self.datadir and self.config['_cache']: |
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if self.datadir: |
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# Only songs in datadirs can be cached |
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cached = {} |
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cached = {} |
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for attribute in self.cached_attributes: |
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for attribute in self.cached_attributes: |
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cached[attribute] = getattr(self, attribute) |
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cached[attribute] = getattr(self, attribute) |
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