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/*
* Modified for busybox by Glenn McGrath <bug1@optushome.com.au>
* Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
*
* 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.
*/
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "busybox.h"
#include "unarchive.h"
int bunzip2_main(int argc, char **argv)
{
const int bunzip_to_stdout = 1;
const int bunzip_force = 2;
int flags = 0;
int opt = 0;
int status;
int src_fd;
int dst_fd;
char *save_name = NULL;
char *delete_name = NULL;
/* if called as bzcat */
if (strcmp(bb_applet_name, "bzcat") == 0)
flags |= bunzip_to_stdout;
while ((opt = getopt(argc, argv, "cfh")) != -1) {
switch (opt) {
case 'c':
flags |= bunzip_to_stdout;
break;
case 'f':
flags |= bunzip_force;
break;
case 'h':
default:
bb_show_usage(); /* exit's inside usage */
}
}
/* Set input filename and number */
if (argv[optind] == NULL || strcmp(argv[optind], "-") == 0) {
flags |= bunzip_to_stdout;
src_fd = fileno(stdin);
} else {
/* Open input file */
src_fd = bb_xopen(argv[optind], O_RDONLY);
save_name = bb_xstrdup(argv[optind]);
if (strcmp(save_name + strlen(save_name) - 4, ".bz2") != 0)
bb_error_msg_and_die("Invalid extension");
save_name[strlen(save_name) - 4] = '\0';
}
/* Check that the input is sane. */
if (isatty(src_fd) && (flags & bunzip_force) == 0) {
bb_error_msg_and_die("compressed data not read from terminal. Use -f to force it.");
}
if (flags & bunzip_to_stdout) {
dst_fd = fileno(stdout);
} else {
dst_fd = bb_xopen(save_name, O_WRONLY | O_CREAT);
}
if (uncompressStream(src_fd, dst_fd) == 0) {
if (!(flags & bunzip_to_stdout)) {
delete_name = argv[optind];
}
status = EXIT_SUCCESS;
} else {
if (!(flags & bunzip_to_stdout)) {
delete_name = save_name;
}
status = EXIT_FAILURE;
}
if ((delete_name) && (unlink(delete_name) < 0)) {
bb_error_msg_and_die("Couldn't remove %s", delete_name);
}
return status;
}
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