typedef enum {
    US_ASCII, ISO8859_1, ISO8859_2, ISO8859_3, ISO8859_4, ISO8859_5,
    ISO8859_6, ISO8859_7, ISO8859_8, ISO8859_9,
} ISO_charset;
 char *ISO_charset_repr[] ;
#define charset2str(c) (ISO_charset_repr[c]) 
 ISO_charset str2charset(char *s);