Accept an input file name of "-" to mean standard input, as required by

P1003.2.

1 files changed, 7 insertions, 14 deletions

diff --git a/usr.bin/uniq/uniq.c b/usr.bin/uniq/uniq.c
index 2d2b980..98f9eda 100644
--- a/usr.bin/uniq/uniq.c
+++ b/usr.bin/uniq/uniq.c
@@ -122,22 +122,15 @@ main (argc, argv)
 	} else if (!dflag && !uflag)
 		dflag = uflag = 1;
 
-	switch(argc) {
-	case 0:
-		ifp = stdin;
-		ofp = stdout;
-		break;
-	case 1:
-		ifp = file(argv[0], "r");
-		ofp = stdout;
-		break;
-	case 2:
+	if (argc > 2)
+		usage();
+
+	ifp = stdin;
+	ofp = stdout;
+	if (argc > 0 && strcmp(argv[0], "-") != 0)
 		ifp = file(argv[0], "r");
+	if (argc > 1)
 		ofp = file(argv[1], "w");
-		break;
-	default:
-		usage();
-	}
 
 	prevline = malloc(MAXLINELEN);
 	thisline = malloc(MAXLINELEN);