76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
//====== Copyright © 1996-2005, Valve Corporation, All rights reserved. =======//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//
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// Serialization/unserialization buffer
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//=============================================================================//
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#ifndef UTLSTREAMBUFFER_H
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#define UTLSTREAMBUFFER_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "tier1/utlbuffer.h"
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#include "filesystem.h"
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//-----------------------------------------------------------------------------
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// Command parsing..
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//-----------------------------------------------------------------------------
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class CUtlStreamBuffer : public CUtlBuffer
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{
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typedef CUtlBuffer BaseClass;
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public:
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// See CUtlBuffer::BufferFlags_t for flags
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CUtlStreamBuffer( );
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CUtlStreamBuffer( const char *pFileName, const char *pPath, int nFlags = 0, bool bDelayOpen = false, int nOpenFileFlags = 0 );
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~CUtlStreamBuffer();
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// Open the file. normally done in constructor
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void Open( const char *pFileName, const char *pPath, int nFlags, int nOpenFileFlags = 0 );
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// close the file. normally done in destructor
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void Close();
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// Is the file open?
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bool IsOpen() const;
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// try flushing the file
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bool TryFlushToFile( int nFlushToFileBytes );
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private:
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// error flags
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enum
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{
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FILE_OPEN_ERROR = MAX_ERROR_FLAG << 1,
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};
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// Overflow functions
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bool StreamPutOverflow( int nSize );
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bool StreamGetOverflow( int nSize );
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// Grow allocation size to fit requested size
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void GrowAllocatedSize( int nSize );
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// Reads bytes from the file; fixes up maxput if necessary and null terminates
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int ReadBytesFromFile( int nBytesToRead, int nReadOffset );
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FileHandle_t OpenFile( const char *pFileName, const char *pPath, int nOpenFileFlags );
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FileHandle_t m_hFileHandle;
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// cached for delayed open
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char *m_pFileName;
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char *m_pPath;
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int m_nOpenFileFlags;
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};
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#endif // UTLSTREAMBUFFER_H
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