busybox/coreutils/cat.c

/* 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)
{
	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;
}

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);
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* cat implementation for busybox
4	*
5	* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
6	*
7	* Licensed under GPLv2, see file License in this tarball for details.
8	*/
9
10	/* BB_AUDIT SUSv3 compliant */
11	/* http://www.opengroup.org/onlinepubs/007904975/utilities/cat.html */
12
13	#include "libbb.h"
14
15	/* This is a NOFORK applet. Be very careful! */
16
17
18	int bb_cat(char **argv)
19	{
20	int fd;
21	int retval = EXIT_SUCCESS;
22
23	if (!*argv)
24	argv = (char**) &bb_argv_dash;
25
26	do {
27	fd = open_or_warn_stdin(*argv);
28	if (fd >= 0) {
29	/* This is not a xfunc - never exits */
30	off_t r = bb_copyfd_eof(fd, STDOUT_FILENO);
31	if (fd != STDIN_FILENO)
32	close(fd);
33	if (r >= 0)
34	continue;
35	}
36	retval = EXIT_FAILURE;
37	} while (*++argv);
38
39	return retval;
40	}
41
42	int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
43	int cat_main(int argc UNUSED_PARAM, char **argv)
44	{
45	getopt32(argv, "u");
46	argv += optind;
47	return bb_cat(argv);
48	}