/********************************************************************
File : DataBuffer.cpp
Creation date : 2010/6/27
License : Copyright 2010 Ahmed Charfeddine, http://www.pushframework.com
Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*********************************************************************/
#include "StdAfx.h"
#include "../include/DataBuffer.h"
namespace PushFramework
{
DataBuffer::DataBuffer(unsigned int uMaxSize)
{
uSize = 0;
Allocate(uMaxSize);
}
DataBuffer::DataBuffer()
{
uSize = 0;
pBuffer = NULL;
}
void DataBuffer::Allocate( unsigned int uMaxSize )
{
this->uMaxSize = uMaxSize;
pBuffer = new char[uMaxSize];
}
DataBuffer::~DataBuffer(void)
{
delete[] pBuffer;
}
bool DataBuffer::Append( char* _pBuffer, unsigned int _uSize )
{
if(getRemainingSize() < _uSize)
return false;
//Copy the data :
::memcpy(pBuffer+uSize,_pBuffer,_uSize);
//Update the size of the buffer.
uSize+=_uSize;
return true;
}
bool DataBuffer::Append( unsigned char* _pBuffer, unsigned int _uSize )
{
return Append((char*) _pBuffer, _uSize);
}
void DataBuffer::Pop( int _uSize )
{
::memmove(pBuffer,pBuffer+_uSize,(uSize-_uSize));
uSize-=_uSize;
}
unsigned int DataBuffer::GetDataSize()
{
return uSize;
}
unsigned int DataBuffer::GetMaxDataSize()
{
return uMaxSize;
}
char* DataBuffer::GetBuffer()
{
return pBuffer;
}
unsigned int DataBuffer::getRemainingSize()
{
return uMaxSize - uSize;
}
void DataBuffer::GrowSize( unsigned int growBy )
{
uSize += growBy;
}
char DataBuffer::getAt( int offset )
{
return pBuffer[offset];
}
}