a

libc/netmkaddr.c

@@ -0,0 +1,52 @@
+#include <u.h>
+#include <libc.h>
+#include <ctype.h>
+
+/*
+ *  make an address, add the defaults
+ */
+char *
+netmkaddr(char *linear, char *defnet, char *defsrv)
+{
+	static char addr[256];
+	char *cp;
+
+	/*
+	 *  dump network name
+	 */
+	cp = strchr(linear, '!');
+	if(cp == 0){
+		if(defnet==0){
+			if(defsrv)
+				snprint(addr, sizeof(addr), "net!%s!%s",
+					linear, defsrv);
+			else
+				snprint(addr, sizeof(addr), "net!%s", linear);
+		}
+		else {
+			if(defsrv)
+				snprint(addr, sizeof(addr), "%s!%s!%s", defnet,
+					linear, defsrv);
+			else
+				snprint(addr, sizeof(addr), "%s!%s", defnet,
+					linear);
+		}
+		return addr;
+	}
+
+	/*
+	 *  if there is already a service, use it
+	 */
+	cp = strchr(cp+1, '!');
+	if(cp)
+		return linear;
+
+	/*
+	 *  add default service
+	 */
+	if(defsrv == 0)
+		return linear;
+	snprint(addr, sizeof(addr), "%s!%s", linear, defsrv);
+
+	return addr;
+}