1 files changed, 46 insertions, 0 deletions
diff --git a/src/liblzma/common/block_private.h b/src/liblzma/common/block_private.h
new file mode 100644
index 00000000..8e2db319
--- /dev/null
+++ b/src/liblzma/common/block_private.h
@@ -0,0 +1,46 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       block_private.h
+/// \brief      Common stuff for Block encoder and decoder
+//
+//  Copyright (C) 2007 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.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BLOCK_COMMON_H
+#define LZMA_BLOCK_COMMON_H
+
+#include "common.h"
+
+static inline bool
+update_size(lzma_vli *size, lzma_vli add, lzma_vli limit)
+{
+	if (limit > LZMA_VLI_VALUE_MAX)
+		limit = LZMA_VLI_VALUE_MAX;
+
+	if (limit < *size || limit - *size < add)
+		return true;
+
+	*size += add;
+
+	return false;
+}
+
+
+static inline bool
+is_size_valid(lzma_vli size, lzma_vli reference)
+{
+	return reference == LZMA_VLI_VALUE_UNKNOWN || reference == size;
+}
+
+#endif