diff options
Diffstat (limited to 'lib/printf.c')
| -rw-r--r-- | lib/printf.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/printf.c b/lib/printf.c index 0e3b4d93..c3f7074d 100644 --- a/lib/printf.c +++ b/lib/printf.c @@ -120,7 +120,8 @@ static char * number(char * str, long num, int base, int size, int precision, * available space to avoid buffer overflows and it allows some more * format specifiers: |%I| for formatting of IP addresses (any non-zero * width is automatically replaced by standard IP address width which - * depends on whether we use IPv4 or IPv6; |%#I| gives hexadecimal format) + * depends on whether we use IPv4 or IPv6; |%#I| gives hexadecimal format), + * |%R| for Router / Network ID (u32 value printed as IPv4 address) * and |%m| resp. |%M| for error messages (uses strerror() to translate @errno code to * message text). On the other hand, it doesn't support floating * point numbers. @@ -133,6 +134,7 @@ int bvsnprintf(char *buf, int size, const char *fmt, va_list args) int len; unsigned long num; int i, base; + u32 x; char *str, *start; const char *s; char ipbuf[STD_ADDRESS_P_LENGTH+1]; @@ -277,6 +279,17 @@ int bvsnprintf(char *buf, int size, const char *fmt, va_list args) s = ipbuf; goto str; + /* Router/Network ID - essentially IPv4 address in u32 value */ + case 'R': + x = va_arg(args, u32); + bsprintf(ipbuf, "%d.%d.%d.%d", + ((x >> 24) & 0xff), + ((x >> 16) & 0xff), + ((x >> 8) & 0xff), + (x & 0xff)); + s = ipbuf; + goto str; + /* integer number formats - set up the flags and "break" */ case 'o': base = 8; |