hkSubStreamWriter.h
上传用户:yisoukefu
上传日期:2020-08-09
资源大小:39506k
文件大小:3k
- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef HKBASE_SUB_STREAMWRITER_H
- #define HKBASE_SUB_STREAMWRITER_H
- #include <Common/Base/System/Io/Writer/hkStreamWriter.h>
- /// Writer which is a "window" into another stream.
- /// Write requests are simply forwarded. Seek/tell
- /// requests are offset before forwarding so that the
- /// start (tell() == 0) of the substream is at a
- /// specified offset in the child stream.
- class hkSubStreamWriter : public hkStreamWriter
- {
- public:
- /// Substream starts at the childs current offset.
- hkSubStreamWriter( hkStreamWriter* child )
- : m_childStream( child )
- {
- HK_ASSERT( 0xaa36a77f, child );
- m_startOffset = m_childStream->tell();
- }
- /// The zero offset is at the specified offset into child.
- hkSubStreamWriter( hkStreamWriter* child, int offset )
- : m_childStream( child ), m_startOffset(offset)
- {
- HK_ASSERT( 0xaa36a77f, child );
- }
- virtual hkBool isOk() const
- {
- return m_childStream->isOk();
- }
- virtual int write(const void* buf, int nbytes)
- {
- return m_childStream->write( buf, nbytes );
- }
- virtual void flush()
- {
- m_childStream->flush();
- }
- virtual hkBool seekTellSupported() const
- {
- return m_childStream->seekTellSupported();
- }
- virtual hkResult seek(int offset, hkStreamWriter::SeekWhence whence)
- {
- int realOffset = ( whence == STREAM_SET )
- ? m_startOffset + offset
- : offset;
-
- return m_childStream->seek( realOffset, whence );
- }
- virtual int tell() const
- {
- return m_childStream->tell() - m_startOffset;
- }
- protected:
- hkStreamWriter* m_childStream;
- int m_startOffset;
- };
- #endif // HKBASE_OFFSET_STREAMWRITER_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */