/**

  * vim: set ts=4 :

  * =============================================================================

  * SourceMod Updater Extension

  * Copyright (C) 2004-2009 AlliedModders LLC.  All rights reserved.

  * =============================================================================

  *

  * This program is free software; you can redistribute it and/or modify it under

  * the terms of the GNU General Public License, version 3.0, as published by the

  * Free Software Foundation.

  * 

  * This program is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more

  * details.

  *

  * You should have received a copy of the GNU General Public License along with

  * this program.  If not, see <http://www.gnu.org/licenses/>.

  *

  * As a special exception, AlliedModders LLC gives you permission to link the

  * code of this program (as well as its derivative works) to "Half-Life 2," the

  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

  * by the Valve Corporation.  You must obey the GNU General Public License in

  * all respects for all other code used.  Additionally, AlliedModders LLC grants

  * this exception to all derivative works.  AlliedModders LLC defines further

  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

  * or <http://www.sourcemod.net/license.php>.

  *

  * Version: $Id$

  */

 #include <assert.h>

 #include <string.h>

 #include <stdlib.h>

 #include "MemoryDownloader.h"

 using namespace SourceMod;

 MemoryDownloader::MemoryDownloader() : buffer(NULL), bufsize(0), bufpos(0)

 {

 }

 MemoryDownloader::~MemoryDownloader()

 {

 	free(buffer);

 }

 DownloadWriteStatus MemoryDownloader::OnDownloadWrite(IWebTransfer *session,

 													  void *userdata,

 													  void *ptr,

 													  size_t size,

 													  size_t nmemb)

 {

 	size_t total = size * nmemb;

 	if (bufpos + total > bufsize)

 	{

 		size_t rem = (bufpos + total) - bufsize;

 		bufsize += rem + (rem / 2);

 		buffer = (char *)realloc(buffer, bufsize);

 	}

 	assert(bufpos + total <= bufsize);

 	memcpy(&buffer[bufpos], ptr, total);

 	bufpos += total;

 	return DownloadWrite_Okay;

 }

 void MemoryDownloader::Reset()

 {

 	bufpos = 0;

 }

 char *MemoryDownloader::GetBuffer()

 {

 	return buffer;

 }

 size_t MemoryDownloader::GetSize()

 {

 	return bufpos;

 }