Added basename(3)

include/libgen.h

@@ -0,0 +1,9 @@
+/*
+libgen.h
+*/
+
+#include <ansi.h>
+
+/* Open Group Base Specifications Issue 6 (not complete) */
+_PROTOTYPE( char *basename, (char *_path)				);
+

lib/other/Makefile

@@ -21,6 +21,7 @@ OBJECTS	= \
 	$(LIBRARY)(_devctl.o) \
 	$(LIBRARY)(_findproc.o) \
 	$(LIBRARY)(asynchio.o) \
+	$(LIBRARY)(basename.o) \
 	$(LIBRARY)(configfile.o) \
 	$(LIBRARY)(crypt.o) \
 	$(LIBRARY)(ctermid.o) \
@@ -106,6 +107,9 @@ $(LIBRARY)(_getsysinfo.o):	_getsysinfo.c
 $(LIBRARY)(asynchio.o):	asynchio.c
 	$(CC1) asynchio.c
 
+$(LIBRARY)(basename.o):	basename.c
+	$(CC1) basename.c
+
 $(LIBRARY)(bcmp.o):	bcmp.c
 	$(CC1) bcmp.c
 

lib/other/basename.c

@@ -0,0 +1,30 @@
+/*
+basename.c
+*/
+
+#include <libgen.h>
+#include <string.h>
+
+char *basename(path)
+char *path;
+{
+	size_t len;
+	char *cp;
+
+	if (path == NULL)
+		return ".";
+	len= strlen(path);
+	if (len == 0)
+		return ".";
+	while (path[len-1] == '/')
+	{
+		if (len == 1)
+			return path;	/* just "/" */
+		len--;
+		path[len]= '\0';
+	}
+	cp= strrchr(path, '/');
+	if (cp != NULL)
+		return cp+1;
+	return path;
+}