upgrade to 4.2.x code for HashedFilesMixin and reapply patches

custom_storages/storages.py

@@ -23,6 +23,21 @@ class PipelineManifestStorage(PipelineMixin, ManifestFilesMixin, StaticFilesStor
     imports in comments. Ref: https://code.djangoproject.com/ticket/21080
     """
 
+    # Skip map files
+    # https://code.djangoproject.com/ticket/33353#comment:13
+    patterns = (
+        (
+            "*.css",
+            (
+                "(?P<matched>url\\(['\"]{0,1}\\s*(?P<url>.*?)[\"']{0,1}\\))",
+                (
+                    "(?P<matched>@import\\s*[\"']\\s*(?P<url>.*?)[\"'])",
+                    '@import url("%(url)s")',
+                ),
+            ),
+        ),
+    )
+
     def get_comment_blocks(self, content):
         """
         Return a list of (start, end) tuples for each comment block.
@@ -32,73 +47,85 @@ def get_comment_blocks(self, content):
             for match in re.finditer(r'\/\*.*?\*\/', content, flags=re.DOTALL)
         ]
 
-    def url_converter(self, name, hashed_files, template=None, comment_blocks=None):
+
+    def is_in_comment(self, pos, comments):
+        for start, end in comments:
+            if start < pos and pos < end:
+                return True
+            if pos < start:
+                return False
+        return False
+
+
+    def url_converter(self, name, hashed_files, template=None, comment_blocks=[]):
         """
         Return the custom URL converter for the given file name.
         """
-        if comment_blocks is None:
-            comment_blocks = []
-
         if template is None:
             template = self.default_template
 
         def converter(matchobj):
             """
             Convert the matched URL to a normalized and hashed URL.
+
             This requires figuring out which files the matched URL resolves
             to and calling the url() method of the storage.
             """
-            matched, url = matchobj.groups()
+            matches = matchobj.groupdict()
+            matched = matches["matched"]
+            url = matches["url"]
 
             # Ignore URLs in comments.
             if self.is_in_comment(matchobj.start(), comment_blocks):
                 return matched
 
             # Ignore absolute/protocol-relative and data-uri URLs.
-            if re.match(r'^[a-z]+:', url):
+            if re.match(r"^[a-z]+:", url):
                 return matched
 
             # Ignore absolute URLs that don't point to a static file (dynamic
             # CSS / JS?). Note that STATIC_URL cannot be empty.
-            if url.startswith('/') and not url.startswith(settings.STATIC_URL):
+            if url.startswith("/") and not url.startswith(settings.STATIC_URL):
                 return matched
 
             # Strip off the fragment so a path-like fragment won't interfere.
             url_path, fragment = urldefrag(url)
 
-            if url_path.startswith('/'):
+            # Ignore URLs without a path
+            if not url_path:
+                return matched
+
+            if url_path.startswith("/"):
                 # Otherwise the condition above would have returned prematurely.
                 assert url_path.startswith(settings.STATIC_URL)
-                target_name = url_path[len(settings.STATIC_URL):]
+                target_name = url_path[len(settings.STATIC_URL) :]
             else:
                 # We're using the posixpath module to mix paths and URLs conveniently.
-                source_name = name if os.sep == '/' else name.replace(os.sep, '/')
+                source_name = name if os.sep == "/" else name.replace(os.sep, "/")
                 target_name = posixpath.join(posixpath.dirname(source_name), url_path)
 
             # Determine the hashed name of the target file with the storage backend.
             hashed_url = self._url(
-                self._stored_name, unquote(target_name),
-                force=True, hashed_files=hashed_files,
+                self._stored_name,
+                unquote(target_name),
+                force=True,
+                hashed_files=hashed_files,
             )
 
-            transformed_url = '/'.join(url_path.split('/')[:-1] + hashed_url.split('/')[-1:])
+            transformed_url = "/".join(
+                url_path.split("/")[:-1] + hashed_url.split("/")[-1:]
+            )
 
             # Restore the fragment that was stripped off earlier.
             if fragment:
-                transformed_url += ('?#' if '?#' in url else '#') + fragment
+                transformed_url += ("?#" if "?#" in url else "#") + fragment
 
             # Return the hashed version to the file
-            return template % unquote(transformed_url)
+            matches["url"] = unquote(transformed_url)
+            return template % matches
 
         return converter
 
-    def is_in_comment(self, pos, comments):
-        for start, end in comments:
-            if start < pos and pos < end:
-                return True
-            if pos < start:
-                return False
-        return False
 
     def _post_process(self, paths, adjustable_paths, hashed_files):
         # Sort the files by directory level
@@ -122,7 +149,7 @@ def path_level(name):
                     hashed_name = hashed_files[hash_key]
 
                 # then get the original's file content..
-                if hasattr(original_file, 'seek'):
+                if hasattr(original_file, "seek"):
                     original_file.seek(0)
 
                 hashed_file_exists = self.exists(hashed_name)
@@ -131,12 +158,14 @@ def path_level(name):
                 # ..to apply each replacement pattern to the content
                 if name in adjustable_paths:
                     old_hashed_name = hashed_name
-                    content = original_file.read().decode(settings.FILE_CHARSET)
+                    content = original_file.read().decode("utf-8")
                     for extension, patterns in self._patterns.items():
                         if matches_patterns(path, (extension,)):
                             comment_blocks = self.get_comment_blocks(content)
                             for pattern, template in patterns:
-                                converter = self.url_converter(name, hashed_files, template, comment_blocks)
+                                converter = self.url_converter(
+                                    name, hashed_files, template, comment_blocks
+                                )
                                 try:
                                     content = pattern.sub(converter, content)
                                 except ValueError as exc:
@@ -145,8 +174,9 @@ def path_level(name):
                         self.delete(hashed_name)
                     # then save the processed result
                     content_file = ContentFile(content.encode())
-                    # Save intermediate file for reference
-                    saved_name = self._save(hashed_name, content_file)
+                    if self.keep_intermediate_files:
+                        # Save intermediate file for reference
+                        self._save(hashed_name, content_file)
                     hashed_name = self.hashed_name(name, content_file)
 
                     if self.exists(hashed_name):