def sanitize_css()

in bleach/css_sanitizer.py [0:0]

• 18 lines of code
• 12 McCabe index (conditional complexity)

    def sanitize_css(self, style):
        """Sanitizes css in style tags"""
        parsed = tinycss2.parse_declaration_list(style)

        if not parsed:
            return ""

        new_tokens = []
        for token in parsed:
            if token.type == "declaration":
                if (
                    token.lower_name in self.allowed_css_properties
                    or token.lower_name in self.allowed_svg_properties
                ):
                    new_tokens.append(token)
            elif token.type in ("comment", "whitespace"):
                if new_tokens and new_tokens[-1].type != token.type:
                    new_tokens.append(token)

            # NOTE(willkg): We currently don't handle AtRule or ParseError and
            # so both get silently thrown out

        if not new_tokens:
            return ""

        return tinycss2.serialize(new_tokens).strip()