1 /* vi: set sw=4 ts=4: */
3 * Modified for busybox by Glenn McGrath <bug1@iinet.net.au>
4 * Added support output to stdout by Thomas Lundquist <thomasez@zelow.no>
6 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
10 #include "unarchive.h"
12 #define BUNZIP2_OPT_STDOUT 1
13 #define BUNZIP2_OPT_FORCE 2
15 int bunzip2_main(int argc, char **argv)
17 USE_DESKTOP(long long) int status;
22 opt = getopt32(argc, argv, "cf");
24 /* Set input filename and number */
25 filename = argv[optind];
26 if (filename && NOT_LONE_DASH(filename)) {
28 src_fd = xopen(filename, O_RDONLY);
30 src_fd = STDIN_FILENO;
34 /* if called as bzcat force the stdout flag */
35 if ((opt & BUNZIP2_OPT_STDOUT) || applet_name[2] == 'c')
38 /* Check that the input is sane. */
39 if (isatty(src_fd) && (opt & BUNZIP2_OPT_FORCE) == 0) {
40 bb_error_msg_and_die("compressed data not read from terminal, "
41 "use -f to force it");
46 /* extension = filename+strlen(filename)-4 is buggy:
47 * strlen may be less than 4 */
48 char *extension = strrchr(filename, '.');
49 if (!extension || strcmp(extension, ".bz2") != 0) {
50 bb_error_msg_and_die("invalid extension");
52 xstat(filename, &stat_buf);
54 dst_fd = xopen3(filename, O_WRONLY | O_CREAT | O_TRUNC,
56 } else dst_fd = STDOUT_FILENO;
57 status = uncompressStream(src_fd, dst_fd);
59 if (status >= 0) filename[strlen(filename)] = '.';
60 if (unlink(filename) < 0) {
61 bb_error_msg_and_die("cannot remove %s", filename);