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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "gdcmWriter.h"
#include "gdcmFileMetaInformation.h"
#include "gdcmDataSet.h"
#include "gdcmTrace.h"
#include "gdcmSwapper.h"
#include "gdcmDataSet.h"
#include "gdcmExplicitDataElement.h"
#include "gdcmImplicitDataElement.h"
#include "gdcmValue.h"
#include "gdcmValue.h"
#include "gdcmItem.h"
#include "gdcmSequenceOfItems.h"
#include "gdcmParseException.h"
#include "gdcmDeflateStream.h"
namespace gdcm
{
Writer::Writer():Stream(NULL),Ofstream(NULL),F(new File),CheckFileMetaInformation(true),WriteDataSetOnly(false)
{
}
Writer::~Writer()
{
if (Ofstream)
{
delete Ofstream;
Ofstream = NULL;
Stream = NULL;
}
}
bool Writer::Write()
{
if( !Stream || !*Stream )
{
gdcmErrorMacro( "No Filename" );
return false;
}
std::ostream &os = *Stream;
FileMetaInformation &Header = F->GetHeader();
DataSet &DS = F->GetDataSet();
if( DS.IsEmpty() )
{
gdcmErrorMacro( "DS empty" );
return false;
}
// Should I check that 0002,0002 / 0008,0016 and 0002,0003 / 0008,0018 match ?
if( !WriteDataSetOnly )
{
if( CheckFileMetaInformation )
{
FileMetaInformation duplicate( Header );
try
{
duplicate.FillFromDataSet( DS );
}
catch(gdcm::Exception &ex)
{
(void)ex; //to avoid unreferenced variable warning on release
gdcmErrorMacro( "Could not recreate the File Meta Header, please report:" << ex.what() );
return false;
}
duplicate.Write(os);
}
else
{
Header.Write(os);
}
}
const TransferSyntax &ts = Header.GetDataSetTransferSyntax();
if( !ts.IsValid() )
{
gdcmErrorMacro( "Invalid Transfer Syntax" );
return false;
}
if( ts == TransferSyntax::DeflatedExplicitVRLittleEndian )
{
//gzostream gzos(os.rdbuf());
try {
zlib_stream::zip_ostream gzos( os );
assert( ts.GetNegociatedType() == TransferSyntax::Explicit );
DS.Write<ExplicitDataElement,SwapperNoOp>(gzos);
//gzos.flush();
} catch (...){
return false;
}
return true;//os;
}
try
{
if( ts.GetSwapCode() == SwapCode::BigEndian )
{
//US-RGB-8-epicard.dcm is big endian
if( ts.GetNegociatedType() == TransferSyntax::Implicit )
{
// There is no such thing as Implicit Big Endian... oh well
// LIBIDO-16-ACR_NEMA-Volume.dcm
DS.Write<ImplicitDataElement,SwapperDoOp>(os);
}
else
{
assert( ts.GetNegociatedType() == TransferSyntax::Explicit );
DS.Write<ExplicitDataElement,SwapperDoOp>(os);
}
}
else // LittleEndian
{
if( ts.GetNegociatedType() == TransferSyntax::Implicit )
{
DS.Write<ImplicitDataElement,SwapperNoOp>(os);
}
else
{
assert( ts.GetNegociatedType() == TransferSyntax::Explicit );
DS.Write<ExplicitDataElement,SwapperNoOp>(os);
}
}
}
catch(std::exception &ex)
{
(void)ex; //to avoid unreferenced variable warning on release
gdcmErrorMacro( ex.what() );
return false;
}
catch(...)
{
gdcmErrorMacro( "what the hell" );
return false;
}
os.flush();
if (Ofstream)
{
Ofstream->close();
}
return true;
}
void Writer::SetFileName(const char *filename)
{
//std::cerr << "Stream: " << filename << std::endl;
//std::cerr << "Ofstream: " << Ofstream << std::endl;
if (Ofstream && Ofstream->is_open())
{
Ofstream->close();
delete Ofstream;
}
Ofstream = new std::ofstream();
Ofstream->open(filename, std::ios::out | std::ios::binary );
assert( Ofstream->is_open() );
assert( !Ofstream->fail() );
//std::cerr << Stream.is_open() << std::endl;
Stream = Ofstream;
}
} // end namespace gdcm
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