Method _post_process

django/contrib/staticfiles/storage.py:380–461

(self, paths, adjustable_paths, hashed_files)

        yield from processed_adjustable_paths.values()

    def _post_process(self, paths, adjustable_paths, hashed_files):
        # Sort the files by directory level
        def path_level(name):
            return len(name.split(os.sep))

        for name in sorted(paths, key=path_level, reverse=True):
            substitutions = True
            # use the original, local file, not the copied-but-unprocessed
            # file, which might be somewhere far away, like S3
            storage, path = paths[name]
            with storage.open(path) as original_file:
                cleaned_name = self.clean_name(name)
                hash_key = self.hash_key(cleaned_name)

                # generate the hash with the original content, even for
                # adjustable files.
                if hash_key not in hashed_files:
                    hashed_name = self.hashed_name(name, original_file)
                else:
                    hashed_name = hashed_files[hash_key]

                # then get the original's file content..
                if hasattr(original_file, "seek"):
                    original_file.seek(0)

                hashed_file_exists = self.exists(hashed_name)
                processed = False

                # ..to apply each replacement pattern to the content
                if name in adjustable_paths:
                    old_hashed_name = hashed_name
                    try:
                        content = original_file.read().decode("utf-8")
                    except UnicodeDecodeError as exc:
                        yield name, None, exc, False
                    for extension, patterns in self._patterns.items():
                        if matches_patterns(path, (extension,)):
                            for pattern, template in patterns:
                                converter = self.url_converter(
                                    name,
                                    hashed_files,
                                    template,
                                    self.get_comment_blocks(
                                        content,
                                        include_line_comments=path.endswith(".js"),
                                    ),
                                )
                                try:
                                    content = pattern.sub(converter, content)
                                except ValueError as exc:
                                    yield name, None, exc, False
                    if hashed_file_exists:
                        self.delete(hashed_name)
                    # then save the processed result
                    content_file = ContentFile(content.encode())
                    if self.keep_intermediate_files:
                        # Save intermediate file for reference
                        self._save(hashed_name, content_file)