Import sources from 2011-03-30 iso image

1 files changed, 46 insertions, 0 deletions

diff --git a/sys/src/libndb/ipattr.c b/sys/src/libndb/ipattr.c
new file mode 100755
index 000000000..d23d5ee09
--- /dev/null
+++ b/sys/src/libndb/ipattr.c
@@ -0,0 +1,46 @@
+#include <u.h>
+#include <ctype.h>
+
+/*
+ *  return ndb attribute type of an ip name
+ */
+char*
+ipattr(char *name)
+{
+	char *p, c;
+	int dot = 0;
+	int alpha = 0;
+	int colon = 0;
+	int hex = 0;
+
+	for(p = name; *p; p++){
+		c = *p;
+		if(isdigit(c))
+			continue;
+		if(isxdigit(c))
+			hex = 1;
+		else if(isalpha(c) || c == '-')
+			alpha = 1;
+		else if(c == '.')
+			dot = 1;
+		else if(c == ':')
+			colon = 1;
+		else
+			return "sys";
+	}
+
+	if(alpha){
+		if(dot)
+			return "dom";
+		else
+			return "sys";
+	}
+
+	if(colon)
+		return "ip";	/* ip v6 */
+
+	if(dot && !hex)
+		return "ip";
+	else
+		return "sys";
+}