1 files changed, 36 insertions, 0 deletions
diff --git a/appl/cmd/newer.b b/appl/cmd/newer.b
new file mode 100644
index 00000000..ce0f743d
--- /dev/null
+++ b/appl/cmd/newer.b
@@ -0,0 +1,36 @@
+implement Newer;
+
+#
+# test if a file is up to date
+#
+
+include "sys.m";
+
+include "draw.m";
+
+Newer: module
+{
+	init:	fn(nil: ref Draw->Context, nil: list of string);
+};
+
+init(nil: ref Draw->Context, args: list of string)
+{
+	sys := load Sys Sys->PATH;
+	if(len args != 3){
+		sys->fprint(sys->fildes(2), "usage: newer newfile oldfile\n");
+		raise "fail:usage";
+	}
+	args = tl args;
+	(ok1, d1) := sys->stat(hd args);
+	if(ok1 < 0)
+		raise sys->sprint("fail:new:%r");
+	if(d1.mode & Sys->DMDIR)
+		raise "fail:new:directory";
+	(ok2, d2) := sys->stat(hd tl args);
+	if(ok2 < 0)
+		raise sys->sprint("fail:old:%r");
+	if(d2.mode & Sys->DMDIR)
+		raise "fail:old:directory";
+	if(d2.mtime > d1.mtime)
+		raise "fail:older";
+}