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/* vi: set sw=4 ts=4: */
/*
* cat implementation for busybox
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2, see file License in this tarball for details.
*/
/* BB_AUDIT SUSv3 compliant */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
#include "libbb.h"
/* This is a NOFORK applet. Be very careful! */
int bb_cat(char **argv)
{
static const char *const argv_dash[] = { "-", NULL };
int fd;
int retval = EXIT_SUCCESS;
if (!*argv)
argv = (char**) &argv_dash;
do {
fd = STDIN_FILENO;
if (!LONE_DASH(*argv))
fd = open_or_warn(*argv, O_RDONLY);
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 ATTRIBUTE_UNUSED, char **argv)
{
getopt32(argv, "u");
argv += optind;
return bb_cat(argv);
}
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