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/*
* Copyright (C) 2007-2019 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#include "bu/blobbuilder.h"
#include "bu/blob.h"
#define PAGE_SIZE 1024
/////
// BlobBuilderCore::Chunk
//
Bu::BlobBuilderCore::Chunk::Chunk( const char *pSrc, int32_t iLength ) :
iLength( iLength ),
pData( 0 ),
pNext( 0 )
{
if( iLength < PAGE_SIZE )
{
pData = new char[PAGE_SIZE];
}
else
{
pData = new char[iLength];
}
memcpy( pData, pSrc, iLength );
}
Bu::BlobBuilderCore::Chunk::~Chunk()
{
delete[] pData;
pData = 0;
pNext = 0;
// Why not delete pNext here? A BlobBuilder could easily wind up having
// quite a few chunks, and if it does, deleting the linked list from here
// could actually exhaust the program stack. Instead these are all deleted
// in the core down below.
}
void Bu::BlobBuilderCore::Chunk::append( const char *&pSrc, int32_t &iLength )
{
if( this->iLength >= PAGE_SIZE )
{
// This chunk is full, just return.
return;
}
int32_t iCopy = PAGE_SIZE-this->iLength;
if( iCopy > iLength )
{
iCopy = iLength;
}
memcpy( pData+this->iLength, pSrc, iCopy );
this->iLength += iCopy;
pSrc += iCopy;
iLength -= iCopy;
}
/////
// BlobBuilderCore
//
Bu::BlobBuilderCore::BlobBuilderCore() :
pFirst( 0 ),
pLast( 0 ),
iLength( 0 )
{
}
Bu::BlobBuilderCore::BlobBuilderCore( const Bu::BlobBuilderCore &rSrc ) :
pFirst( 0 ),
pLast( 0 ),
iLength( rSrc.iLength )
{
}
Bu::BlobBuilderCore::~BlobBuilderCore()
{
clear();
}
void Bu::BlobBuilderCore::clear()
{
Chunk *pCur = pFirst;
while( pCur )
{
Chunk *pNext = pCur->pNext;
delete pCur;
pCur = pNext;
}
delete pFirst;
pFirst = pLast = 0;
iLength = 0;
}
void Bu::BlobBuilderCore::append( const char *pSrc, int32_t iLength )
{
if( pFirst == 0 )
{
// Nothing in the list, just add a chunk.
pFirst = pLast = new Chunk( pSrc, iLength );
return;
}
else if( pLast->iLength < 1024 )
{
// Append to the last chunk first, this will modify pSrc & iLength.
pLast->append( pSrc, iLength );
}
// If there's unused data at the end, append it now.
if( iLength > 0 )
{
pLast->pNext = new Chunk( pSrc, iLength );
}
}
void Bu::BlobBuilderCore::set( const char *pSrc, int32_t iLength )
{
clear();
append( pSrc, iLength );
}
//////
// BlobBuilder
//
Bu::BlobBuilder::BlobBuilder()
{
}
Bu::BlobBuilder::BlobBuilder( const Bu::BlobBuilder &rSrc ) :
Bu::SharedCore<Bu::BlobBuilder, Bu::BlobBuilderCore>( rSrc )
{
}
Bu::BlobBuilder::~BlobBuilder()
{
}
void Bu::BlobBuilder::set( const Blob &rSrc )
{
_hardCopy();
core->set( rSrc.getData(), rSrc.getSize() );
}
void Bu::BlobBuilder::set( const char *pSrc, int32_t iLength )
{
_hardCopy();
core->set( pSrc, iLength );
}
void Bu::BlobBuilder::append( const Blob &rSrc )
{
_hardCopy();
core->append( rSrc.getData(), rSrc.getSize() );
}
void Bu::BlobBuilder::append( const char *pSrc, int32_t iLength )
{
_hardCopy();
core->append( pSrc, iLength );
}
void Bu::BlobBuilder::prepend( const Blob &rSrc )
{
_hardCopy();
}
void Bu::BlobBuilder::prepend( const char *pSrc, int32_t iLength )
{
_hardCopy();
}
void Bu::BlobBuilder::insert( int32_t iBefore, const Blob &rSrc )
{
_hardCopy();
}
void Bu::BlobBuilder::insert( int32_t iBefore, const char *pSrc, const Bu::Blob &rSrc )
{
_hardCopy();
}
void Bu::BlobBuilder::clear()
{
_hardCopy();
core->clear();
}
int32_t Bu::BlobBuilder::getSize() const
{
return core->iLength;
}
Bu::Blob Bu::BlobBuilder::getBlob() const
{
Blob bRet();
}
Bu::BlobBuilder &Bu::BlobBuilder::operator=( const Blob &rSrc )
{
}
Bu::BlobBuilder &Bu::BlobBuilder::operator=( const char *pSrc )
{
}
Bu::BlobBuilder &Bu::BlobBuilder::operator+=( const Blob &rSrc )
{
}
Bu::BlobBuilder &Bu::BlobBuilder::operator+=( const char *pSrc )
{
}
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