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61 lines
1.5 KiB
61 lines
1.5 KiB
22 years ago
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//
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// Copyright (C) 2002 RealVNC Ltd. All Rights Reserved.
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//
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// This is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This software is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this software; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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#include <rdr/NullOutStream.h>
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#include <rdr/Exception.h>
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using namespace rdr;
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static const int bufferSize = 1024;
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NullOutStream::NullOutStream()
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: offset(0)
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{
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start = ptr = new U8[bufferSize];
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end = start + bufferSize;
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}
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NullOutStream::~NullOutStream()
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{
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delete [] start;
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}
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int NullOutStream::length()
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{
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return offset + ptr - start;
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}
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void NullOutStream::writeBytes(const void* data, int length)
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{
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offset += length;
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}
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int NullOutStream::overrun(int itemSize, int nItems)
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{
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if (itemSize > bufferSize)
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throw Exception("NullOutStream overrun: max itemSize exceeded");
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offset += ptr - start;
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ptr = start;
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if (itemSize * nItems > end - ptr)
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nItems = (end - ptr) / itemSize;
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return nItems;
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}
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