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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 "gdcmDataSet.h"
#include "gdcmPrivateTag.h"
namespace gdcm
{
DataElement DataSet::DEEnd = DataElement( Tag(0xffff,0xffff) );
const DataElement& DataSet::GetDEEnd() const
{
return DEEnd;
}
std::string DataSet::GetPrivateCreator(const Tag &t) const
{
if( t.IsPrivate() && !t.IsPrivateCreator() )
{
Tag pc = t.GetPrivateCreator();
if( pc.GetElement() )
{
const DataElement r(pc);
ConstIterator it = DES.find(r);
if( it == DES.end() )
{
// FIXME, could this happen ?
return "";
}
const DataElement &de = *it;
if( de.IsEmpty() ) return "";
const ByteValue *bv = de.GetByteValue();
assert( bv );
std::string owner = std::string(bv->GetPointer(),bv->GetLength());
// There should not be any trailing space character...
// TODO: tmp.erase(tmp.find_last_not_of(' ') + 1);
while( owner.size() && owner[owner.size()-1] == ' ' )
{
// osirix/AbdominalCT/36382443
owner.erase(owner.size()-1,1);
}
assert( owner.size() == 0 || owner[owner.size()-1] != ' ' );
return owner;
}
}
return "";
}
Tag DataSet::ComputeDataElement(const PrivateTag & t) const
{
gdcmDebugMacro( "Entering ComputeDataElement" );
//assert( t.IsPrivateCreator() ); // No this is wrong to do the assert: eg. (0x07a1,0x000a,"ELSCINT1")
// is valid because we have not yet done the mapping, so 0xa < 0x10 fails but might not later on
const Tag start(t.GetGroup(), 0x0010 ); // First possible private creator (0x0 -> 0x9 are reserved...)
const DataElement r(start);
ConstIterator it = DES.lower_bound(r);
const char *refowner = t.GetOwner();
assert( refowner );
bool found = false;
while( it != DES.end() && it->GetTag().GetGroup() == t.GetGroup() && it->GetTag().GetElement() < 0x100 )
{
//assert( it->GetTag().GetOwner() );
const ByteValue * bv = it->GetByteValue();
if( bv )
{
//if( strcmp( bv->GetPointer(), refowner ) == 0 )
std::string tmp(bv->GetPointer(),bv->GetLength());
// trim trailing whitespaces:
tmp.erase(tmp.find_last_not_of(' ') + 1);
assert( tmp.size() == 0 || tmp[ tmp.size() - 1 ] != ' ' ); // FIXME
if( System::StrCaseCmp( tmp.c_str(), refowner ) == 0 )
{
// found !
found = true;
break;
}
}
++it;
}
gdcmDebugMacro( "In compute found is:" << found );
if (!found) return GetDEEnd().GetTag();
// else
// ok we found the Private Creator Data Element, let's construct the proper data element
Tag copy = t;
copy.SetPrivateCreator( it->GetTag() );
gdcmDebugMacro( "Compute found:" << copy );
return copy;
}
bool DataSet::FindDataElement(const PrivateTag &t) const
{
return FindDataElement( ComputeDataElement(t) );
}
const DataElement& DataSet::GetDataElement(const PrivateTag &t) const
{
return GetDataElement( ComputeDataElement(t) );
}
MediaStorage DataSet::GetMediaStorage() const
{
// Let's check 0008,0016:
// D 0008|0016 [UI] [SOP Class UID] [1.2.840.10008.5.1.4.1.1.7 ]
// ==> [Secondary Capture Image Storage]
const Tag tsopclassuid(0x0008, 0x0016);
if( !FindDataElement( tsopclassuid) )
{
gdcmDebugMacro( "No SOP Class UID" );
return MediaStorage::MS_END;
}
const DataElement &de = GetDataElement(tsopclassuid);
if( de.IsEmpty() )
{
gdcmDebugMacro( "Empty SOP Class UID" );
return MediaStorage::MS_END;
}
std::string ts;
{
const ByteValue *bv = de.GetByteValue();
assert( bv );
if( bv->GetPointer() && bv->GetLength() )
{
// Pad string with a \0
ts = std::string(bv->GetPointer(), bv->GetLength());
}
}
// Paranoid check: if last character of a VR=UI is space let's pretend this is a \0
if( ts.size() )
{
char &last = ts[ts.size()-1];
if( last == ' ' )
{
gdcmWarningMacro( "Media Storage Class UID: " << ts << " contained a trailing space character" );
last = '\0';
}
}
gdcmDebugMacro( "TS: " << ts );
MediaStorage ms = MediaStorage::GetMSType(ts.c_str());
if( ms == MediaStorage::MS_END )
{
gdcmWarningMacro( "Media Storage Class UID: " << ts << " is unknow" );
}
return ms;
}
} // end namespace gdcm
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