You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
117 lines
2.6 KiB
117 lines
2.6 KiB
5 years ago
|
//====== Copyright 1996-2004, Valve Corporation, All rights reserved. =======
|
||
|
|
//
|
||
|
|
// Purpose:
|
||
|
|
//
|
||
|
|
//=============================================================================
|
||
|
|
|
||
|
|
#include "tier1/utlbinaryblock.h"
|
||
|
|
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
// Base class, containing simple memory management
|
||
|
|
//-----------------------------------------------------------------------------
|
||
|
|
CUtlBinaryBlock::CUtlBinaryBlock( int growSize, int initSize ) : m_Memory( growSize, initSize )
|
||
|
|
{
|
||
|
|
m_nActualLength = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
CUtlBinaryBlock::CUtlBinaryBlock( void* pMemory, int nSizeInBytes, int nInitialLength ) : m_Memory( (unsigned char*)pMemory, nSizeInBytes )
|
||
|
|
{
|
||
|
|
m_nActualLength = nInitialLength;
|
||
|
|
}
|
||
|
|
|
||
|
|
CUtlBinaryBlock::CUtlBinaryBlock( const void* pMemory, int nSizeInBytes ) : m_Memory( (const unsigned char*)pMemory, nSizeInBytes )
|
||
|
|
{
|
||
|
|
m_nActualLength = nSizeInBytes;
|
||
|
|
}
|
||
|
|
|
||
|
|
CUtlBinaryBlock::CUtlBinaryBlock( const CUtlBinaryBlock& src )
|
||
|
|
{
|
||
|
|
Set( src.Get(), src.Length() );
|
||
|
|
}
|
||
|
|
|
||
|
|
void CUtlBinaryBlock::Get( void *pValue, int nLen ) const
|
||
|
|
{
|
||
|
|
Assert( nLen > 0 );
|
||
|
|
if ( m_nActualLength < nLen )
|
||
|
|
{
|
||
|
|
nLen = m_nActualLength;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( nLen > 0 )
|
||
|
|
{
|
||
|
|
memcpy( pValue, m_Memory.Base(), nLen );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void CUtlBinaryBlock::SetLength( int nLength )
|
||
|
|
{
|
||
|
|
Assert( !m_Memory.IsReadOnly() );
|
||
|
|
|
||
|
|
m_nActualLength = nLength;
|
||
|
|
if ( nLength > m_Memory.NumAllocated() )
|
||
|
|
{
|
||
|
|
int nOverFlow = nLength - m_Memory.NumAllocated();
|
||
|
|
m_Memory.Grow( nOverFlow );
|
||
|
|
|
||
|
|
// If the reallocation failed, clamp length
|
||
|
|
if ( nLength > m_Memory.NumAllocated() )
|
||
|
|
{
|
||
|
|
m_nActualLength = m_Memory.NumAllocated();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef _DEBUG
|
||
|
|
if ( m_Memory.NumAllocated() > m_nActualLength )
|
||
|
|
{
|
||
|
|
memset( ( ( char * )m_Memory.Base() ) + m_nActualLength, 0xEB, m_Memory.NumAllocated() - m_nActualLength );
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void CUtlBinaryBlock::Set( const void *pValue, int nLen )
|
||
|
|
{
|
||
|
|
Assert( !m_Memory.IsReadOnly() );
|
||
|
|
|
||
|
|
if ( !pValue )
|
||
|
|
{
|
||
|
|
nLen = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
SetLength( nLen );
|
||
|
|
|
||
|
|
if ( m_nActualLength )
|
||
|
|
{
|
||
|
|
if ( ( ( const char * )m_Memory.Base() ) >= ( ( const char * )pValue ) + nLen ||
|
||
|
|
( ( const char * )m_Memory.Base() ) + m_nActualLength <= ( ( const char * )pValue ) )
|
||
|
|
{
|
||
|
|
memcpy( m_Memory.Base(), pValue, m_nActualLength );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
memmove( m_Memory.Base(), pValue, m_nActualLength );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
CUtlBinaryBlock &CUtlBinaryBlock::operator=( const CUtlBinaryBlock &src )
|
||
|
|
{
|
||
|
|
Assert( !m_Memory.IsReadOnly() );
|
||
|
|
Set( src.Get(), src.Length() );
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
bool CUtlBinaryBlock::operator==( const CUtlBinaryBlock &src ) const
|
||
|
|
{
|
||
|
|
if ( src.Length() != Length() )
|
||
|
|
return false;
|
||
|
|
|
||
|
|
return !memcmp( src.Get(), Get(), Length() );
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|