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118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-10 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#include "../../core/juce_StandardHeader.h"
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BEGIN_JUCE_NAMESPACE
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#include "juce_MemoryOutputStream.h"
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//==============================================================================
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MemoryOutputStream::MemoryOutputStream (const size_t initialSize,
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const size_t blockSizeToIncreaseBy,
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MemoryBlock* const memoryBlockToWriteTo)
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: data (memoryBlockToWriteTo),
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position (0),
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size (0),
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blockSize (jmax ((size_t) 16, blockSizeToIncreaseBy))
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{
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if (data == 0)
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dataToDelete = data = new MemoryBlock (initialSize);
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else
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data->setSize (initialSize, false);
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}
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MemoryOutputStream::~MemoryOutputStream()
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{
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flush();
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}
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void MemoryOutputStream::flush()
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{
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if (dataToDelete == 0)
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data->setSize (size, false);
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}
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void MemoryOutputStream::reset() throw()
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{
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position = 0;
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size = 0;
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}
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bool MemoryOutputStream::write (const void* const buffer, int howMany)
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{
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if (howMany > 0)
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{
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size_t storageNeeded = position + howMany;
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if (storageNeeded >= data->getSize())
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{
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// if we need more space, increase the block by at least 10%..
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storageNeeded += jmax (blockSize, storageNeeded / 10);
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storageNeeded = storageNeeded - (storageNeeded % blockSize) + blockSize;
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data->ensureSize (storageNeeded);
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}
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data->copyFrom (buffer, (int) position, howMany);
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position += howMany;
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size = jmax (size, position);
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}
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return true;
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}
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const char* MemoryOutputStream::getData() const throw()
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{
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char* const d = static_cast <char*> (data->getData());
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if (data->getSize() > size)
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d [size] = 0;
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return d;
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}
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bool MemoryOutputStream::setPosition (int64 newPosition)
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{
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if (newPosition <= (int64) size)
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{
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// ok to seek backwards
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position = jlimit ((size_t) 0, size, (size_t) newPosition);
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return true;
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}
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else
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{
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// trying to make it bigger isn't a good thing to do..
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return false;
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}
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}
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const String MemoryOutputStream::toUTF8() const
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{
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return String (getData(), getDataSize());
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}
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END_JUCE_NAMESPACE
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