*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
- * Licensed under GPLv2, see file License in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
/* BB_AUDIT SUSv3 compliant */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
-#include "busybox.h"
-#include <unistd.h>
+//kbuild:lib-$(CONFIG_CAT) += cat.o
+//kbuild:lib-$(CONFIG_MORE) += cat.o # more uses it if stdout isn't a tty
+//kbuild:lib-$(CONFIG_LESS) += cat.o # less too
+//kbuild:lib-$(CONFIG_CRONTAB) += cat.o # crontab -l
-int cat_main(int argc, char **argv)
+//config:config CAT
+//config: bool "cat"
+//config: default y
+//config: help
+//config: cat is used to concatenate files and print them to the standard
+//config: output. Enable this option if you wish to enable the 'cat' utility.
+
+#include "libbb.h"
+
+/* This is a NOFORK applet. Be very careful! */
+
+
+int bb_cat(char **argv)
{
- FILE *f;
+ int fd;
int retval = EXIT_SUCCESS;
- getopt32(argc, argv, "u");
-
- argv += optind;
- if (!*argv) {
- *--argv = "-";
- }
+ if (!*argv)
+ argv = (char**) &bb_argv_dash;
do {
- f = fopen_or_warn_stdin(*argv);
- if (f) {
- off_t r = bb_copyfd_eof(fileno(f), STDOUT_FILENO);
- fclose_if_not_stdin(f);
- if (r >= 0) {
+ 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;
}
+
+int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int cat_main(int argc UNUSED_PARAM, char **argv)
+{
+ getopt32(argv, "u");
+ argv += optind;
+ return bb_cat(argv);
+}