зеркало из https://github.com/mozilla/gecko-dev.git
55 строки
1.7 KiB
C++
55 строки
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef __BUFFERSTREAM__
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#define __BUFFERSTREAM__
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#include <LFileStream.h>
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#include <stddef.h>
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// Does plain buffered read/writes
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// Buffering strategy:
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// reading: read all you can fit in the buffer
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// give it to the client in small chunks
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// writing: write all you can fit in the buffer
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// on overflow, flush everything, then write the rest
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// for now, we only buffer writing
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class LFileBufferStream: public LFileStream
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{
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public:
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LFileBufferStream( FSSpec& inFileSpec );
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virtual ~LFileBufferStream();
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virtual Int32 WriteData( const void *inFromBuffer, Int32 inByteCount );
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virtual Int32 ReadData( void* outToBuffer, Int32 inByteCount );
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virtual void CloseDataFork();
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void DoUseBuffer();
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void SetURL( char* url ) { fURL = url; }
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char* GetURL() { return fURL; }
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protected:
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OSErr FlushBuffer( Boolean allocateNew );
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Boolean fUseBuffer;
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Handle fBuffer;
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UInt32 fBufferSize;
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UInt32 fLastWritten;
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Boolean fWriteFailed;
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char * fURL;
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};
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#endif // __BUFFERSTREAM__
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