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78 lines
2.2 KiB
78 lines
2.2 KiB
9 years ago
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# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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# Erik Stein <code@classlibrary.net>, 2016
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import os
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import warnings
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from django.core.files.storage import FileSystemStorage
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from django.conf import settings
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from django.utils._os import safe_join
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from django.utils.deconstruct import deconstructible
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from django.utils.encoding import filepath_to_uri
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from django.utils.six.moves.urllib.parse import urljoin
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__all__ = ('MediaAssetStorage',)
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ORIGINAL_FILE_PREFIX = 'original'
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CACHED_VARIANT_PREFIX = 'cache'
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MANUAL_VARIANT_PREFIX = 'manual'
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"""
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Storage setup:
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/<asset_uuid>/original/filename.ext
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/cache/<format_slug>/<hash>.<variant_ext>
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/manual/<format_slug>/<hash>.<variant_ext>
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TODO Add snapshot (versioning) to path after asset_uuid.
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"""
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class BaseVariantSubStorage(FileSystemStorage):
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def delete(self, parent_storage, name):
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"""
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Deletes the whole storage path
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"""
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raise NotImplemented
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@deconstructible
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class MediaAssetStorage(FileSystemStorage):
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"""
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Standard media assets filesystem storage
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"""
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def __init__(self, location=None, base_url=None, file_permissions_mode=None,
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directory_permissions_mode=None):
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if location is None:
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location = getattr(settings, 'MEDIA_ASSETS_ROOT', settings.MEDIA_ROOT)
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if base_url is None:
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base_url = getattr(settings, 'MEDIA_ASSETS_URL', settings.MEDIA_URL)
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if not base_url.endswith('/'):
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base_url += '/'
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super(MediaAssetStorage, self).__init__(self)
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def delete(self, name):
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super(MediaAssetStorage, self).delete(name)
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# FIXME Delete all cached files, too
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warnings.warn("Cached files for asset \"%s\" are not deleted." % name)
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def path(self, name):
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"""
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`name` must already contain the whole asset filesystem path.
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"""
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return safe_join(self.location, ORIGINAL_FILE_PREFIX, name)
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def size(self, name):
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return os.path.getsize(self.path(name))
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def url(self, name):
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if self.base_url is None:
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raise ValueError("This file is not accessible via a URL.")
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return urljoin(self.base_url, ORIGINAL_FILE_PREFIX, filepath_to_uri(name))
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