/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1 (the 
 * "License"); you may not use this file except in compliance with the License. You may obtain 
 * a copy of the License at http://www.mozilla.org/MPL/ 
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT 
 * WARRANTY OF ANY KIND, either express or implied. See the License for the specific 
 * language governing rights and limitations under the License. 
 * 
 * The Original Code is [Open Source Virtual Machine.] 
 * 
 * The Initial Developer of the Original Code is Adobe System Incorporated.  Portions created 
 * by the Initial Developer are Copyright (C)[ 2004-2006 ] Adobe Systems Incorporated. All Rights 
 * Reserved. 
 * 
 * Contributor(s): Adobe AS3 Team
 * 
 * Alternatively, the contents of this file may be used under the terms of either the GNU 
 * General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public 
 * License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the 
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 * above and replace them with the notice and other provisions required by the GPL or the 
 * LGPL. If you do not delete the provisions above, a recipient may use your version of this file 
 * under the terms of any one of the MPL, the GPL or the LGPL. 
 * 
 ***** END LICENSE BLOCK ***** */

#include "avmplus.h"

namespace avmplus
{
	using namespace MMgc;

	StringOutputStream::StringOutputStream(GC *gc)
	{
		GCAssert(!gc->IsPointerToGCPage(this));
		m_buffer = (char*) gc->Alloc(kInitialCapacity);
		m_buffer[0] = 0;
		m_length = 0;
	}

	StringOutputStream::~StringOutputStream()
	{
		if (m_buffer) {
			GC* gc = MMgc::GC::GetGC(m_buffer);
			gc->Free(m_buffer);
		}
	}

	int StringOutputStream::write(const void *buffer,
								  int count)
	{
		if (m_length + count >= (int)GC::Size(m_buffer))
		{
			GC* gc = MMgc::GC::GetGC(m_buffer);
			int newCapacity = (m_length+count+1)*2;
			char *newBuffer = (char*) gc->Alloc(newCapacity);
			if (!newBuffer) {
				return 0;
			}
			memcpy(newBuffer, m_buffer, m_length);
			gc->Free(m_buffer);
			m_buffer = newBuffer;
		}
		memcpy(m_buffer+m_length, buffer, count);
		m_length += count;
		m_buffer[m_length] = 0;
		return count;
	}
}