1 files changed, 36 insertions, 0 deletions
diff --git a/src/liblzma/common/stream_flags_equal.c b/src/liblzma/common/stream_flags_equal.c
new file mode 100644
index 00000000..db22567f
--- /dev/null
+++ b/src/liblzma/common/stream_flags_equal.c
@@ -0,0 +1,36 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       stream_flags_equal.c
+/// \brief      Compare Stream Header and Stream Footer
+//
+//  Copyright (C) 2008 Lasse Collin
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API lzma_bool
+lzma_stream_flags_equal(const lzma_stream_flags *a, lzma_stream_flags *b)
+{
+	if (a->check != b->check)
+		return false;
+
+	// Backward Sizes are compared only if they are known in both.
+	if (a->backward_size != LZMA_VLI_VALUE_UNKNOWN
+			&& b->backward_size != LZMA_VLI_VALUE_UNKNOWN
+			&& a->backward_size != b->backward_size)
+		return false;
+
+	return true;
+}