busybox/archival/dpkg_deb.c
Denys Vlasenko aa4977d8e5 libunarchive: clean up dirty hacks. code shrank as a result
function                                             old     new   delta
cpio_main                                            526     539     +13
init_handle                                           57      58      +1
init_archive_deb_ar                                   34      35      +1
get_header_ar                                        408     409      +1
dpkg_main                                           3900    3901      +1
unpack_package                                       516     515      -1
rpm_main                                            1673    1672      -1
tar_main                                             774     767      -7
get_header_cpio                                      990     972     -18
data_extract_all                                     750     727     -23
get_header_tar                                      1631    1576     -55
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/6 up/down: 17/-105)           Total: -88 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-01-06 10:53:17 +01:00

105 lines
2.7 KiB
C

/* vi: set sw=4 ts=4: */
/*
* dpkg-deb packs, unpacks and provides information about Debian archives.
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#include "unarchive.h"
#define DPKG_DEB_OPT_CONTENTS 1
#define DPKG_DEB_OPT_CONTROL 2
#define DPKG_DEB_OPT_FIELD 4
#define DPKG_DEB_OPT_EXTRACT 8
#define DPKG_DEB_OPT_EXTRACT_VERBOSE 16
int dpkg_deb_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int dpkg_deb_main(int argc, char **argv)
{
archive_handle_t *ar_archive;
archive_handle_t *tar_archive;
llist_t *control_tar_llist = NULL;
unsigned opt;
const char *extract_dir;
int need_args;
/* Setup the tar archive handle */
tar_archive = init_handle();
/* Setup an ar archive handle that refers to the gzip sub archive */
ar_archive = init_handle();
ar_archive->dpkg__sub_archive = tar_archive;
ar_archive->filter = filter_accept_list_reassign;
#if ENABLE_FEATURE_SEAMLESS_GZ
llist_add_to(&(ar_archive->accept), (char*)"data.tar.gz");
llist_add_to(&control_tar_llist, (char*)"control.tar.gz");
#endif
#if ENABLE_FEATURE_SEAMLESS_BZ2
llist_add_to(&(ar_archive->accept), (char*)"data.tar.bz2");
llist_add_to(&control_tar_llist, (char*)"control.tar.bz2");
#endif
opt_complementary = "c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
opt = getopt32(argv, "cefXx");
argv += optind;
argc -= optind;
if (opt & DPKG_DEB_OPT_CONTENTS) {
tar_archive->action_header = header_verbose_list;
}
extract_dir = NULL;
need_args = 1;
if (opt & DPKG_DEB_OPT_CONTROL) {
ar_archive->accept = control_tar_llist;
tar_archive->action_data = data_extract_all;
if (1 == argc) {
extract_dir = "./DEBIAN";
} else {
need_args++;
}
}
if (opt & DPKG_DEB_OPT_FIELD) {
/* Print the entire control file
* it should accept a second argument which specifies a
* specific field to print */
ar_archive->accept = control_tar_llist;
llist_add_to(&(tar_archive->accept), (char*)"./control");
tar_archive->filter = filter_accept_list;
tar_archive->action_data = data_extract_to_stdout;
}
if (opt & DPKG_DEB_OPT_EXTRACT) {
tar_archive->action_header = header_list;
}
if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
tar_archive->action_data = data_extract_all;
need_args = 2;
}
if (need_args != argc) {
bb_show_usage();
}
tar_archive->src_fd = ar_archive->src_fd = xopen(argv[0], O_RDONLY);
/* Work out where to extract the files */
/* 2nd argument is a dir name */
if (argv[1]) {
extract_dir = argv[1];
}
if (extract_dir) {
mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
xchdir(extract_dir);
}
/* Do it */
unpack_ar_archive(ar_archive);
/* Cleanup */
if (ENABLE_FEATURE_CLEAN_UP)
close(ar_archive->src_fd);
return EXIT_SUCCESS;
}