+/* vi: set sw=4 ts=4: */
/*
- * Mini Cat implementation for busybox
+ * cat implementation for busybox
*
- * Copyright (C) 1999 by Lineo, inc.
- * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.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
+ * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
+ * Licensed under GPLv2, see file License in this tarball for details.
*/
-#include "internal.h"
-#include <stdio.h>
+/* BB_AUDIT SUSv3 compliant */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
+
+#include "libbb.h"
+/* This is a NOFORK applet. Be very careful! */
-static void print_file( FILE *file)
+
+int bb_cat(char **argv)
{
- int c;
- while ((c = getc(file)) != EOF)
- putc(c, stdout);
- fclose(file);
- fflush(stdout);
+ int fd;
+ int retval = EXIT_SUCCESS;
+
+ if (!*argv)
+ argv = (char**) &bb_argv_dash;
+
+ do {
+ fd = open_or_warn_stdin(*argv);
+ if (fd >= 0) {
+ /* This is not a xfunc - never exits */
+ off_t r = bb_copyfd_eof(fd, STDOUT_FILENO);
+ if (fd != STDIN_FILENO)
+ close(fd);
+ if (r >= 0)
+ continue;
+ }
+ retval = EXIT_FAILURE;
+ } while (*++argv);
+
+ return retval;
}
-extern int cat_main(int argc, char **argv)
+int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int cat_main(int argc UNUSED_PARAM, char **argv)
{
- FILE *file;
-
- if (argc==1) {
- print_file( stdin);
- exit( TRUE);
- }
-
- if ( **(argv+1) == '-' ) {
- usage ("cat [file ...]\n");
- }
- argc--;
-
- while (argc-- > 0 && *(argv++) != '\0' && strlen(*argv) ) {
- file = fopen(*argv, "r");
- if (file == NULL) {
- perror(*argv);
- exit(FALSE);
- }
- print_file( file);
- }
- exit(TRUE);
+ getopt32(argv, "u");
+ argv += optind;
+ return bb_cat(argv);
}