1 files changed, 36 insertions, 0 deletions
diff --git a/main/storage.py b/main/storage.py
new file mode 100644
index 00000000..62e94ef7
--- /dev/null
+++ b/main/storage.py
@@ -0,0 +1,36 @@
+import cssmin
+import jsmin
+
+from django.contrib.staticfiles.storage import CachedStaticFilesStorage
+from django.core.files.base import ContentFile
+from django.utils.encoding import smart_str
+
+
+class MinifiedStaticFilesStorage(CachedStaticFilesStorage):
+    """
+    A static file system storage backend which minifies the hashed
+    copies of the files it saves. It currently knows how to process
+    CSS and JS files. Files containing '.min' anywhere in the filename
+    are skipped as they are already assumed minified.
+    """
+    minifiers = (
+        ('.css', cssmin.cssmin),
+        ('.js', jsmin.jsmin),
+    )
+
+    def post_process(self, paths, dry_run=False, **options):
+        for original_path, processed_path, processed in super(
+                MinifiedStaticFilesStorage, self).post_process(
+                paths, dry_run, **options):
+            for ext, func in self.minifiers:
+                if '.min' in original_path:
+                    continue
+                if original_path.endswith(ext):
+                    with self._open(processed_path) as processed_file:
+                        minified = func(processed_file.read())
+                    minified_file = ContentFile(smart_str(minified))
+                    self.delete(processed_path)
+                    self._save(processed_path, minified_file)
+                    processed = True
+
+            yield original_path, processed_path, processed