chxdfmem.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifdef __MWERKS__
- #pragma once
- #endif
- #ifndef _CHXDFMEM_H_
- #define _CHXDFMEM_H_
- #include "hxtypes.h"
- #include "hxresult.h"
- #include "chxdataf.h"
- #include "chunkres.h"
- class CHXDataFileMem : public CHXDataFile
- {
- public:
- CHXDataFileMem()
- {
- m_Offset = 0;
- #ifdef DONT_USE_CHUNKYRES /////////////////////////
- m_MemSize = 0;
- m_pMemData = NULL;
- #else
- m_pChunkyRes = NULL;
- #endif
- };
- /* Create creates a file using the specified mode */
- virtual HX_RESULT Create (const char *filename, UINT16 mode, BOOL textflag = 1)
- { return HXR_FAILED; }
- /* Open will open a file with the specified permissions */
- virtual HX_RESULT Open (const char *filename, UINT16 mode, BOOL textflag = 1)
- { return HXR_FAILED; }
- /* Close closes a file */
- virtual HX_RESULT Close (void)
- { return HXR_OK; }
-
- /* Seek moves the current file position to the offset from the fromWhere specifier */
- virtual HX_RESULT Seek (ULONG32 offset, UINT16 fromWhere);
- /* Tell returns the current file position in the ra file */
- virtual ULONG32 Tell (void);
- /* Read reads up to count bytes of data into buf.
- returns the number of bytes read, EOF, or -1 if the read failed */
- virtual ULONG32 Read (char* buf, ULONG32 count);
- /* Write writes up to count bytes of data from buf.
- returns the number of bytes written, or -1 if the write failed */
- virtual ULONG32 Write (const char* buf, ULONG32 count)
- { return (ULONG32)-1; }
- /* Rewinds the file to the start of the file */
- virtual HX_RESULT Rewind (void);
- /* Return the file descriptor */
- virtual INT16 GetFd (void)
- { return -1; }
- #ifdef DONT_USE_CHUNKYRES /////////////////////////
- // Used to set pointers to actual memory data...
- void SetMemData(ULONG32 MemSize, const char* pMemData)
- {
- m_MemSize = MemSize;
- m_pMemData = pMemData;
- };
- #else
- void SetChunkyRes(CChunkyRes* pChunkyRes)
- {
- m_pChunkyRes = pChunkyRes;
- }
- #endif
- private:
- ULONG32 m_Offset;
- #ifdef DONT_USE_CHUNKYRES /////////////////////////
- ULONG32 m_MemSize;
- const char* m_pMemData;
- #else
- CChunkyRes* m_pChunkyRes;
- #endif
- };
-
- #endif // _CHXDFMEM_H_