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Make unlink old files default behaviour and add a new option -k to

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prevent overwritting existing files
This commit is contained in:
Glenn L McGrath 2003-11-18 20:23:04 +00:00
parent de3ea9f049
commit 3b9fc8fe2a
1 changed files with 23 additions and 19 deletions
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42
archival/tar.c
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@ -595,7 +595,7 @@ static llist_t *append_file_list_to_list(llist_t *list)
#endif
static const char tar_options[]="ctxjT:X:C:f:Opvz";
static const char tar_options[]="ctxjT:X:C:f:Opvzk";
#define CTX_CREATE 1
#define CTX_TEST 2
@ -609,6 +609,7 @@ static const char tar_options[]="ctxjT:X:C:f:Opvz";
#define TAR_OPT_P 512
#define TAR_OPT_VERBOSE 1024
#define TAR_OPT_GZIP 2048
#define TAR_OPT_KEEP_OLD 4096
int tar_main(int argc, char **argv)
{
@ -633,7 +634,7 @@ int tar_main(int argc, char **argv)
/* Initialise default values */
tar_handle = init_handle();
tar_handle->flags = ARCHIVE_CREATE_LEADING_DIRS | ARCHIVE_PRESERVE_DATE;
tar_handle->flags = ARCHIVE_CREATE_LEADING_DIRS | ARCHIVE_PRESERVE_DATE | ARCHIVE_EXTRACT_UNCONDITIONAL;
bb_opt_complementaly = "c~tx:t~cx:x~ct:X*";
opt = bb_getopt_ulflags(argc, argv, tar_options,
@ -647,29 +648,32 @@ int tar_main(int argc, char **argv)
bb_show_usage();
ctx_flag = opt & (CTX_CREATE | CTX_TEST | CTX_EXTRACT);
if(ctx_flag & CTX_TEST) {
if ((tar_handle->action_header == header_list) ||
(tar_handle->action_header == header_verbose_list)) {
tar_handle->action_header = header_verbose_list;
} else {
tar_handle->action_header = header_list;
}
if ((tar_handle->action_header == header_list) ||
(tar_handle->action_header == header_verbose_list)) {
tar_handle->action_header = header_verbose_list;
} else {
tar_handle->action_header = header_list;
}
}
if(ctx_flag & CTX_EXTRACT) {
if (tar_handle->action_data != data_extract_to_stdout)
tar_handle->action_data = data_extract_all;
}
tar_handle->action_data = data_extract_all;
}
if(opt & TAR_OPT_2STDOUT) {
/* To stdout */
tar_handle->action_data = data_extract_to_stdout;
tar_handle->action_data = data_extract_to_stdout;
}
if(opt & TAR_OPT_VERBOSE) {
if ((tar_handle->action_header == header_list) ||
(tar_handle->action_header == header_verbose_list))
{
tar_handle->action_header = header_verbose_list;
} else {
tar_handle->action_header = header_list;
}
if ((tar_handle->action_header == header_list) ||
(tar_handle->action_header == header_verbose_list))
{
tar_handle->action_header = header_verbose_list;
} else {
tar_handle->action_header = header_list;
}
}
if (opt & TAR_OPT_KEEP_OLD) {
tar_handle->flags &= ~ARCHIVE_EXTRACT_UNCONDITIONAL;
}
if(opt & TAR_OPT_GZIP) {
@ -681,7 +685,7 @@ int tar_main(int argc, char **argv)
}
if(opt & TAR_OPT_BZIP2) {
#ifdef CONFIG_FEATURE_TAR_BZIP2
get_header_ptr = get_header_tar_bz2;
get_header_ptr = get_header_tar_bz2;
#else
bb_show_usage();
#endif