private boolean isTokenChar(char c) {
        return (c >= 33 && c <= 126)
                && !(c == '(' || c == ')' || c == '<' || c == '>' || c == '@'
                        || c == ',' || c == ';' || c == ':' || c == '\\'
                        || c == '\"' || c == '/' || c == '[' || c == ']'
                        || c == '?' || c == '=' || c == '{' || c == '}');
    }
@param url
@throws MalformedURLException
@throws IOException
src/nu/validator/io/DataUri.java