tar -Z, uncompress support

diff --git a/archival/Config.in b/archival/Config.in
index 8859bb1..2eab5ab 100644 (file)
--- a/archival/Config.in
+++ b/archival/Config.in
@@ -193,6 +193,14 @@ config CONFIG_FEATURE_TAR_GZIP
          If you enable this option tar will be able to call gzip,
          when creating or extracting tar gziped archives.
 
+config CONFIG_FEATURE_TAR_COMPRESS
+       bool "  Enable -Z option"
+       default n
+       depends on CONFIG_TAR
+       help
+         If you enable this option tar will be able to call uncompress,
+         when extracting .tar.Z archives.
+
 config CONFIG_FEATURE_TAR_OLDGNU_COMPATABILITY
        bool "  Enable support for old tar header format"
        default N

diff --git a/archival/libunarchive/Makefile.in b/archival/libunarchive/Makefile.in
index d449c19..14ceea1 100644 (file)
--- a/archival/libunarchive/Makefile.in
+++ b/archival/libunarchive/Makefile.in
@@ -73,6 +73,7 @@ LIBUNARCHIVE-$(CONFIG_RPM) += $(GUNZIP_FILES) get_header_cpio.o
 LIBUNARCHIVE-$(CONFIG_TAR) += get_header_tar.o
 LIBUNARCHIVE-$(CONFIG_FEATURE_TAR_BZIP2) += decompress_bunzip2.o get_header_tar_bz2.o
 LIBUNARCHIVE-$(CONFIG_FEATURE_TAR_GZIP) += $(GUNZIP_FILES) get_header_tar_gz.o
+LIBUNARCHIVE-$(CONFIG_FEATURE_TAR_COMPRESS) += uncompress.o
 LIBUNARCHIVE-$(CONFIG_UNCOMPRESS) += uncompress.o
 LIBUNARCHIVE-$(CONFIG_UNZIP) += $(GUNZIP_FILES)
 

diff --git a/archival/libunarchive/decompress_uncompress.c b/archival/libunarchive/decompress_uncompress.c
index 9851ca3..5046e8a 100644 (file)
--- a/archival/libunarchive/decompress_uncompress.c
+++ b/archival/libunarchive/decompress_uncompress.c
@@ -1,8 +1,6 @@
 #include "config.h"
 #include "libbb.h"
 
-#if defined CONFIG_UNCOMPRESS || defined CONFIG_FEATURE_GUNZIP_UNCOMPRESS
-
 /* uncompress for busybox -- (c) 2002 Robert Griebl
  *
  * based on the original compress42.c source 
@@ -293,6 +291,3 @@ extern int uncompress(int fd_in, int fd_out)
 
        return 0;
 }
-
-
-#endif

diff --git a/archival/libunarchive/uncompress.c b/archival/libunarchive/uncompress.c
index 9851ca3..5046e8a 100644 (file)
--- a/archival/libunarchive/uncompress.c
+++ b/archival/libunarchive/uncompress.c
@@ -1,8 +1,6 @@
 #include "config.h"
 #include "libbb.h"
 
-#if defined CONFIG_UNCOMPRESS || defined CONFIG_FEATURE_GUNZIP_UNCOMPRESS
-
 /* uncompress for busybox -- (c) 2002 Robert Griebl
  *
  * based on the original compress42.c source 
@@ -293,6 +291,3 @@ extern int uncompress(int fd_in, int fd_out)
 
        return 0;
 }
-
-
-#endif

diff --git a/archival/tar.c b/archival/tar.c
index 7516b57..4e763a4 100644 (file)
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -594,8 +594,27 @@ static llist_t *append_file_list_to_list(llist_t *list)
 }
 #endif
 
+#ifdef CONFIG_FEATURE_TAR_COMPRESS
+static char get_header_tar_Z(archive_handle_t *archive_handle)
+{
+       /* Cant lseek over pipe's */
+       archive_handle->seek = seek_by_char;
+
+       /* do the decompression, and cleanup */
+       if ((bb_xread_char(archive_handle->src_fd) != 0x1f) || (bb_xread_char(archive_handle->src_fd) != 0x9d)) {
+               bb_error_msg_and_die("Invalid magic");
+       }
 
-static const char tar_options[]="ctxjT:X:C:f:Opvzk";
+       archive_handle->src_fd = open_transformer(archive_handle->src_fd, uncompress);
+       archive_handle->offset = 0;
+       while (get_header_tar(archive_handle) == EXIT_SUCCESS);
+
+       /* Can only do one file at a time */
+       return(EXIT_FAILURE);
+}
+#endif
+
+static const char tar_options[]="ctxjT:X:C:f:OpvzkZ";
 
 #define CTX_CREATE     1
 #define CTX_TEST       2
@@ -610,6 +629,7 @@ static const char tar_options[]="ctxjT:X:C:f:Opvzk";
 #define TAR_OPT_VERBOSE  1024
 #define TAR_OPT_GZIP     2048
 #define TAR_OPT_KEEP_OLD       4096
+#define TAR_OPT_UNCOMPRESS     8192
 
 int tar_main(int argc, char **argv)
 {
@@ -690,6 +710,13 @@ int tar_main(int argc, char **argv)
                bb_show_usage();
 #endif
        }
+       if(opt & TAR_OPT_UNCOMPRESS) {
+#ifdef CONFIG_FEATURE_TAR_COMPRESS
+               get_header_ptr = get_header_tar_Z;
+#else
+               bb_show_usage();
+#endif
+       }
        if(opt & TAR_OPT_EXCLUDE) {
 #ifdef CONFIG_FEATURE_TAR_EXCLUDE
                tar_handle->reject = append_file_list_to_list(tar_handle->reject);