New common unarchive code.

archival/libunarchive/init_handle.c

@@ -0,0 +1,18 @@
+#include <string.h>
+#include "libbb.h"
+#include "unarchive.h"
+
+archive_handle_t *init_handle(void)
+{
+	archive_handle_t *archive_handle;
+
+	/* Initialise default values */
+	archive_handle = xmalloc(sizeof(archive_handle_t));
+	memset(archive_handle, 0, sizeof(archive_handle_t));
+	archive_handle->file_header = xmalloc(sizeof(file_header_t));
+	archive_handle->action_header = header_skip;
+	archive_handle->action_data = data_skip;
+	archive_handle->filter = filter_accept_all;
+
+	return(archive_handle);
+}