1 files changed, 20 insertions, 0 deletions
diff --git a/src/libstddjb/ip4_fmt.c b/src/libstddjb/ip4_fmt.c
new file mode 100644
index 0000000..4c2f6a3
--- /dev/null
+++ b/src/libstddjb/ip4_fmt.c
@@ -0,0 +1,20 @@
+/* ISC license. */
+
+#include <skalibs/uint32.h>
+#include <skalibs/fmtscan.h>
+
+unsigned int ip4_fmt (char *s, char const *ip)
+{
+  unsigned int len = 0 ;
+  unsigned int i, j ;
+  for (j = 0 ; j < 4 ; j++)
+  {
+    i = uint32_fmt(s, (uint32)(unsigned char) ip[j]) ;
+    len += i ;
+    if (s) s += i ;
+    if (j == 3) break ;
+    if (s) *s++ = '.' ;
+    ++len ;
+  }
+  return len ;
+}