1 files changed, 23 insertions, 0 deletions
diff --git a/src/libstddjb/ip4_scan.c b/src/libstddjb/ip4_scan.c
new file mode 100644
index 0000000..2873cd4
--- /dev/null
+++ b/src/libstddjb/ip4_scan.c
@@ -0,0 +1,23 @@
+/* ISC license. */
+
+#include <skalibs/uint.h>
+
+unsigned int ip4_scan (char const *s, char *ip)
+{
+  register unsigned int j = 0 ;
+  unsigned int len = 0 ;
+  for (; j < 4 ; j++)
+  {
+    unsigned int u ;
+    register unsigned int i = uint_scan(s, &u) ;
+    if (!i) return 0 ;
+    ip[j] = (char)u ;
+    s += i ;
+    len += i ;
+    if (j == 3) break ;
+    if (*s != '.') return 0 ;
+    ++s ;
+    ++len ;
+  }
+  return len ;
+}