X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=coreutils%2Fcat.c;h=9645f6143c22213d7a77e5ff3e88838e7e1d27a2;hb=8326d5e31ba322b692b729ac08b4bf27f0aa18e2;hp=134245cdc118a7fa7681d5a4f0bcb16639d76069;hpb=8ec10a9483f937743cba51124b30540c9613fca8;p=oweals%2Fbusybox.git

diff --git a/coreutils/cat.c b/coreutils/cat.c
index 134245cdc..9645f6143 100644
--- a/coreutils/cat.c
+++ b/coreutils/cat.c
@@ -1,9 +1,8 @@
 /* vi: set sw=4 ts=4: */
 /*
- * Mini Cat implementation for busybox
+ * cat implementation for busybox
  *
- * Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
+ * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,32 +20,48 @@
  *
  */
 
-#include "busybox.h"
+/* BB_AUDIT SUSv3 compliant */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
+
+/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
+ *
+ * This is a new implementation of 'cat' which aims to be SUSv3 compliant.
+ *
+ * Changes from the previous implementation include:
+ * 1) Multiple '-' args are accepted as required by SUSv3.  The previous
+ *    implementation would close stdin and segfault on a subsequent '-'.
+ * 2) The '-u' options is required by SUSv3.  Note that the specified
+ *    behavior for '-u' is done by default, so all we need do is accept
+ *    the option.
+ */
+
 #include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include "busybox.h"
 
-extern int cat_main(int argc, char **argv)
+int cat_main(int argc, char **argv)
 {
-	int status = EXIT_SUCCESS;
+	FILE *f;
+	int retval = EXIT_SUCCESS;
+
+	bb_getopt_ulflags(argc, argv, "u");
 
-	if (argc == 1) {
-		print_file(stdin);
-		return status;
+	argv += optind;
+	if (!*argv) {
+		*--argv = "-";
 	}
 
-	while (--argc > 0) {
-		if(!(strcmp(*++argv, "-"))) {
-			print_file(stdin);
-		} else if (print_file_by_name(*argv) == FALSE) {
-			status = EXIT_FAILURE;
+	do {
+		if ((f = bb_wfopen_input(*argv)) != NULL) {
+			int r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
+			bb_fclose_nonstdin(f);
+			if (r >= 0) {
+				continue;
+			}
 		}
-	}
-	return status;
-}
+		retval = EXIT_FAILURE;
+	} while (*++argv);
 
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/
+	return retval;
+}