Major coreutils update.

libbb/wfopen_input.c

@@ -0,0 +1,54 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * wfopen_input implementation for busybox
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/* A number of applets need to open a file for reading, where the filename
+ * is a command line arg.  Since often that arg is '-' (meaning stdin),
+ * we avoid testing everywhere by consolidating things in this routine.
+ *
+ * Note: We also consider "" to main stdin (for 'cmp' at least).
+ */
+
+#include <stdio.h>
+#include <sys/stat.h>
+#include <libbb.h>
+
+FILE *bb_wfopen_input(const char *filename)
+{
+	FILE *fp = stdin;
+
+	if ((filename != bb_msg_standard_input)
+		&& filename[0] && ((filename[0] != '-') || filename[1])
+	) {
+#if 0
+		/* This check shouldn't be necessary for linux, but is left
+		 * here disabled just in case. */
+		struct stat stat_buf;
+		if (is_directory(filename, 1, &stat_buf)) {
+			bb_error_msg("%s: Is a directory", filename);
+			return NULL;
+		}
+#endif
+		fp = bb_wfopen(filename, "r");
+	}
+
+	return fp;
+}