storage.py 文件源码

def hashed_name(self, name, content=None):
        parsed_name = urlsplit(unquote(name))
        clean_name = parsed_name.path.strip()
        opened = False
        if content is None:
            if not self.exists(clean_name):
                raise ValueError("The file '%s' could not be found with %r." %
                                 (clean_name, self))
            try:
                content = self.open(clean_name)
            except IOError:
                # Handle directory paths and fragments
                return name
            opened = True
        try:
            file_hash = self.file_hash(clean_name, content)
        finally:
            if opened:
                content.close()
        path, filename = os.path.split(clean_name)
        root, ext = os.path.splitext(filename)
        if file_hash is not None:
            file_hash = ".%s" % file_hash
        hashed_name = os.path.join(path, "%s%s%s" %
                                   (root, file_hash, ext))
        unparsed_name = list(parsed_name)
        unparsed_name[2] = hashed_name
        # Special casing for a @font-face hack, like url(myfont.eot?#iefix")
        # http://www.fontspring.com/blog/the-new-bulletproof-font-face-syntax
        if '?#' in name and not unparsed_name[3]:
            unparsed_name[2] += '?'
        return urlunsplit(unparsed_name)