diff options
| -rw-r--r-- | chat.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/chat.h b/chat.h index e48799c..e9bee8b 100644 --- a/chat.h +++ b/chat.h @@ -44,6 +44,18 @@ typedef unsigned uint; typedef unsigned char byte; +static inline char *seprintf(char *ptr, char *end, const char *fmt, ...) + __attribute__((format(printf, 3, 4))); +static inline char *seprintf(char *ptr, char *end, const char *fmt, ...) { + va_list ap; + va_start(ap, fmt); + int n = vsnprintf(ptr, end - ptr, fmt, ap); + va_end(ap); + if (n < 0) return NULL; + ptr += n; + return (ptr > end ? end : ptr); +} + struct Cat { char *buf; size_t cap; |