diff options
Diffstat (limited to 'netdissect.h')
| -rw-r--r-- | netdissect.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/netdissect.h b/netdissect.h index b4c24e64..bdf2ebdb 100644 --- a/netdissect.h +++ b/netdissect.h @@ -267,6 +267,17 @@ extern char *read_infile(netdissect_options *, char *); extern char *copy_argv(netdissect_options *, char **); #endif +/* + * Locale-independent macros for testing character properties and + * stripping the 8th bit from characters. Assumed to be handed + * a value between 0 and 255, i.e. don't hand them a char, as + * those might be in the range -128 to 127. + */ +#define ND_ISASCII(c) (!((c) & 0x80)) /* value is an ASCII code point */ +#define ND_ISPRINT(c) ((c) >= 0x20 && (c) <= 0x7E) +#define ND_ISGRAPH(c) ((c) > 0x20 && (c) <= 0x7E) +#define ND_TOASCII(c) ((c) & 0x7F) + extern void safeputchar(int); extern void safeputs(const char *, int); |