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)
19 int status, src_fd, dst_fd;
21 opt = bb_getopt_ulflags(argc, argv, "cf");
23 /* Set input filename and number */
24 filename = argv[optind];
25 if ((filename) && (filename[0] != '-') && (filename[1] != '\0')) {
27 src_fd = xopen(filename, O_RDONLY);
29 src_fd = STDIN_FILENO;
33 /* if called as bzcat force the stdout flag */
34 if ((opt & BUNZIP2_OPT_STDOUT) || bb_applet_name[2] == 'c')
37 /* Check that the input is sane. */
38 if (isatty(src_fd) && (opt & BUNZIP2_OPT_FORCE) == 0) {
39 bb_error_msg_and_die("Compressed data not read from terminal. Use -f to force it.");
44 /* extension = filename+strlen(filename)-4 is buggy:
45 * strlen may be less than 4 */
46 char *extension = strrchr(filename, '.');
47 if (!extension || strcmp(extension, ".bz2") != 0) {
48 bb_error_msg_and_die("Invalid extension");
50 xstat(filename, &stat_buf);
52 dst_fd = xopen3(filename, O_WRONLY | O_CREAT | O_TRUNC,
54 } else dst_fd = STDOUT_FILENO;
55 status = uncompressStream(src_fd, dst_fd);
57 if (!status) filename[strlen(filename)] = '.';
58 if (unlink(filename) < 0) {
59 bb_error_msg_and_die("Couldn't remove %s", filename);