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);
16 int bunzip2_main(int argc, char **argv)
18 USE_DESKTOP(long long) int status;
23 opt = getopt32(argc, argv, "cf");
25 /* Set input filename and number */
26 filename = argv[optind];
27 if (filename && NOT_LONE_DASH(filename)) {
29 src_fd = xopen(filename, O_RDONLY);
31 src_fd = STDIN_FILENO;
35 /* if called as bzcat force the stdout flag */
36 if ((opt & BUNZIP2_OPT_STDOUT) || applet_name[2] == 'c')
39 /* Check that the input is sane. */
40 if (isatty(src_fd) && (opt & BUNZIP2_OPT_FORCE) == 0) {
41 bb_error_msg_and_die("compressed data not read from terminal, "
42 "use -f to force it");
47 /* extension = filename+strlen(filename)-4 is buggy:
48 * strlen may be less than 4 */
49 char *extension = strrchr(filename, '.');
50 if (!extension || strcmp(extension, ".bz2") != 0) {
51 bb_error_msg_and_die("invalid extension");
53 xstat(filename, &stat_buf);
55 dst_fd = xopen3(filename, O_WRONLY | O_CREAT | O_TRUNC,
57 } else dst_fd = STDOUT_FILENO;
58 status = uncompressStream(src_fd, dst_fd);
60 if (status >= 0) filename[strlen(filename)] = '.';
61 if (unlink(filename) < 0) {
62 bb_error_msg_and_die("cannot remove %s", filename);