Merging changes from pull.
// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
// e32tools\petran\Szip\compress.cpp
//
//
#include "deflate.h"
#if defined(__MSVCDOTNET__) || defined(__TOOLS2__)
#include <fstream>
#else //__MSVCDOTNET__
#include <fstream.h>
#endif //__MSVCDOTNET__
#include <assert.h>
#include "h_utl.h"
class TFileOutput : public TBitOutput
{
enum {KBufSize=0x1000};
public:
TFileOutput(ostream& os);
void FlushL();
TUint32 iDataCount;
private:
void OverflowL();
private:
ostream& iOutStream;
TUint8 iBuf[KBufSize];
};
TFileOutput::TFileOutput(ostream& os)
:iOutStream(os)
{
Set(iBuf,KBufSize);
}
void TFileOutput::OverflowL()
//
// empty the buffer and reset the pointers
//
{
FlushL();
Set(iBuf,KBufSize);
}
void TFileOutput::FlushL()
//
// write out the contents of the buffer
//
{
TInt len=Ptr()-iBuf;
if (len)
{
iOutStream.write(reinterpret_cast<char *>(iBuf), len); // write extended header
iDataCount += len;
}
}
void DeflateCompress(char *bytes,TInt size,ostream &os)
{
TFileOutput* output=new TFileOutput(os);
output->iDataCount = 0;
DeflateL((TUint8*)bytes,size,*output);
output->FlushL();
delete output;
}
TUint32 DeflateCompressCheck(char *bytes,TInt size,ostream &os)
{
TUint32 r = 0;
TFileOutput* output=new TFileOutput(os);
output->iDataCount = 0;
DeflateL((TUint8*)bytes,size,*output);
output->FlushL();
r = output->iDataCount; // Preserve the compressed count
delete output;
return r; // Return the compressed size
}
class TFileInput : public TBitInput
{
public:
TFileInput(unsigned char* source,int size);
private:
void UnderflowL();
private:
TUint8* iReadBuf;
TInt iSize;
};
TFileInput::TFileInput(unsigned char* source,int size)
:iReadBuf(source),iSize(size)
{
Set(source,iSize*8);
}
void TFileInput::UnderflowL()
{
Print(ESevereError,"Buffer underflow on deflate\n");
}
void InflateUnCompress(unsigned char* source, int sourcesize,unsigned char* dest, int destsize)
{
TFileInput* input = new TFileInput(source, sourcesize);
CInflater* inflater=CInflater::NewLC(*input);
inflater->ReadL(dest,destsize);
delete input;
//delete inflater;
}