tar: fix multiple -t and/or -v options handling.
do not process list of files to tar up in reverse order.
This commit is contained in:
Denis Vlasenko
parent
d031ffa623
commit
3feb2fc535
@ -276,13 +276,13 @@ static int writeTarHeader(struct TarBallInfo *tbInfo,
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xwrite(tbInfo->tarFd, &header, sizeof(struct TarHeader));
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/* Now do the verbose thing (or not) */
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if (tbInfo->verboseFlag) {
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FILE *vbFd = stdout;
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if (tbInfo->tarFd == STDOUT_FILENO) /* If the archive goes to stdout, verbose to stderr */
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vbFd = stderr;
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/* GNU "tar cvvf" prints "extended" listing a-la "ls -l" */
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/* We don't have such excesses here: for us "v" == "vv" */
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fprintf(vbFd, "%s\n", header.name);
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}
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@ -549,9 +549,10 @@ static llist_t *append_file_list_to_list(llist_t *list)
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cur = cur->link;
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free(tmp);
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while ((line = xmalloc_getline(src_stream)) != NULL) {
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char *filename_ptr = last_char_is(line, '/');
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if (filename_ptr > line)
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*filename_ptr = '\0';
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/* kill trailing '/' unless the string is just "/" */
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char *cp = last_char_is(line, '/');
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if (cp > line)
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*cp = '\0';
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llist_add_to(&newlist, line);
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}
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fclose(src_stream);
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@ -664,6 +665,7 @@ int tar_main(int argc, char **argv)
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char *base_dir = NULL;
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const char *tar_filename = "-";
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unsigned opt;
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int verboseFlag = 0;
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llist_t *excludes = NULL;
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/* Initialise default values */
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@ -674,6 +676,7 @@ int tar_main(int argc, char **argv)
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/* Prepend '-' to the first argument if required */
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opt_complementary = "--:" // first arg is options
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"tt:vv:" // count -t,-v
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"?:" // bail out with usage instead of error return
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"X::T::" // cumulative lists
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"\xfd::" // cumulative lists for --exclude
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@ -695,31 +698,20 @@ int tar_main(int argc, char **argv)
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&tar_filename, // -f filename
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USE_FEATURE_TAR_FROM(&(tar_handle->accept),) // T
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USE_FEATURE_TAR_FROM(&(tar_handle->reject),) // X
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USE_FEATURE_TAR_FROM(&excludes ) // --exclude
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USE_FEATURE_TAR_FROM(&excludes ,) // --exclude
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&verboseFlag, // combined count for -t and -v
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&verboseFlag // combined count for -t and -v
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);
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if (opt & OPT_TEST) {
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if (tar_handle->action_header == header_list
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|| tar_handle->action_header == header_verbose_list
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) {
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tar_handle->action_header = header_verbose_list;
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} else
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tar_handle->action_header = header_list;
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}
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if (verboseFlag) tar_handle->action_header = header_verbose_list;
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if (verboseFlag == 1) tar_handle->action_header = header_list;
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if ((opt & OPT_EXTRACT) && tar_handle->action_data != data_extract_to_stdout)
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tar_handle->action_data = data_extract_all;
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if (opt & OPT_2STDOUT)
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tar_handle->action_data = data_extract_to_stdout;
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if (opt & OPT_VERBOSE) {
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if (tar_handle->action_header == header_list
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|| tar_handle->action_header == header_verbose_list
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) {
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tar_handle->action_header = header_verbose_list;
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} else
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tar_handle->action_header = header_list;
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}
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if (opt & OPT_KEEP_OLD)
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tar_handle->flags &= ~ARCHIVE_EXTRACT_UNCONDITIONAL;
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@ -762,13 +754,14 @@ int tar_main(int argc, char **argv)
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/* Setup an array of filenames to work with */
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/* TODO: This is the same as in ar, separate function ? */
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while (optind < argc) {
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char *filename_ptr = last_char_is(argv[optind], '/');
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if (filename_ptr > argv[optind])
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*filename_ptr = '\0';
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llist_add_to(&(tar_handle->accept), argv[optind]);
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/* kill trailing '/' unless the string is just "/" */
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char *cp = last_char_is(argv[optind], '/');
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if (cp > argv[optind])
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*cp = '\0';
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llist_add_to(&tar_handle->accept, argv[optind]);
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optind++;
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}
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tar_handle->accept = rev_llist(tar_handle->accept);
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if (tar_handle->accept || tar_handle->reject)
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tar_handle->filter = filter_accept_reject_list;
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@ -805,22 +798,14 @@ int tar_main(int argc, char **argv)
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/* create an archive */
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if (opt & OPT_CREATE) {
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int verboseFlag = FALSE;
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int zipMode = 0;
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if (ENABLE_FEATURE_TAR_GZIP && get_header_ptr == get_header_tar_gz)
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zipMode = 1;
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if (ENABLE_FEATURE_TAR_BZIP2 && get_header_ptr == get_header_tar_bz2)
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zipMode = 2;
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if (tar_handle->action_header == header_list
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|| tar_handle->action_header == header_verbose_list
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) {
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verboseFlag = TRUE;
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}
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writeTarFile(tar_handle->src_fd, verboseFlag, opt & OPT_DEREFERENCE,
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tar_handle->accept,
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tar_handle->reject, zipMode);
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tar_handle->reject, zipMode);
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/* NB: writeTarFile() closes tar_handle->src_fd */
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return EXIT_SUCCESS;
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}
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@ -7,20 +7,19 @@
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include <string.h>
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#include "libbb.h"
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/* Find out if the last character of a string matches the one given Don't
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* underrun the buffer if the string length is 0. Also avoids a possible
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* space-hogging inline of strlen() per usage.
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*/
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char * last_char_is(const char *s, int c)
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char* last_char_is(const char *s, int c)
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{
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char *sret = (char *)s;
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if (sret) {
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sret = strrchr(sret, c);
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if(sret != NULL && *(sret+1) != 0)
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sret = NULL;
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char *sret;
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if (s) {
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sret = strrchr(s, c);
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if (sret && !sret[1])
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return sret;
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}
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return sret;
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return NULL;
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}
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