source: MondoRescue/branches/2.2.5/mindi-busybox/coreutils/cat.c@ 1765

/* 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 an 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);
int cat_main(int argc, char **argv)
{
    getopt32(argv, "u");
    argv += optind;
    return bb_cat(argv);
}