1 files changed, 113 insertions, 0 deletions
diff --git a/mediagoblin/storage/filestorage.py b/mediagoblin/storage/filestorage.py
new file mode 100644
index 00000000..3d6e0753
--- /dev/null
+++ b/mediagoblin/storage/filestorage.py
@@ -0,0 +1,113 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from mediagoblin.storage import (
+    StorageInterface,
+    clean_listy_filepath,
+    NoWebServing)
+
+import os
+import shutil
+import urlparse
+
+
+class BasicFileStorage(StorageInterface):
+    """
+    Basic local filesystem implementation of storage API
+    """
+
+    local_storage = True
+
+    def __init__(self, base_dir, base_url=None, **kwargs):
+        """
+        Keyword arguments:
+        - base_dir: Base directory things will be served out of.  MUST
+          be an absolute path.
+        - base_url: URL files will be served from
+        """
+        self.base_dir = base_dir
+        self.base_url = base_url
+
+    def _resolve_filepath(self, filepath):
+        """
+        Transform the given filepath into a local filesystem filepath.
+        """
+        return os.path.join(
+            self.base_dir, *clean_listy_filepath(filepath))
+
+    def file_exists(self, filepath):
+        return os.path.exists(self._resolve_filepath(filepath))
+
+    def get_file(self, filepath, mode='r'):
+        # Make directories if necessary
+        if len(filepath) > 1:
+            directory = self._resolve_filepath(filepath[:-1])
+            if not os.path.exists(directory):
+                os.makedirs(directory)
+
+        # Grab and return the file in the mode specified
+        return open(self._resolve_filepath(filepath), mode)
+
+    def delete_file(self, filepath):
+        """Delete file at filepath
+
+        Raises OSError in case filepath is a directory."""
+        #TODO: log error
+        os.remove(self._resolve_filepath(filepath))
+
+    def delete_dir(self, dirpath, recursive=False):
+        """returns True on succes, False on failure"""
+
+        dirpath = self._resolve_filepath(dirpath)
+
+        # Shortcut the default and simple case of nonempty=F, recursive=F
+        if recursive:
+            try:
+                shutil.rmtree(dirpath)
+            except OSError as e:
+                #TODO: log something here
+                return False
+        else: # recursively delete everything
+            try:
+                os.rmdir(dirpath)
+            except OSError as e:
+                #TODO: log something here
+                return False
+        return True
+
+    def file_url(self, filepath):
+        if not self.base_url:
+            raise NoWebServing(
+                "base_url not set, cannot provide file urls")
+
+        return urlparse.urljoin(
+            self.base_url,
+            '/'.join(clean_listy_filepath(filepath)))
+
+    def get_local_path(self, filepath):
+        return self._resolve_filepath(filepath)
+
+    def copy_local_to_storage(self, filename, filepath):
+        """
+        Copy this file from locally to the storage system.
+        """
+        # Make directories if necessary
+        if len(filepath) > 1:
+            directory = self._resolve_filepath(filepath[:-1])
+            if not os.path.exists(directory):
+                os.makedirs(directory)
+        # This uses chunked copying of 16kb buffers (Py2.7):
+        shutil.copy(filename, self.get_local_path(filepath))