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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkImageReader2Factory.h"
#include "vtkBMPReader.h"
#include "vtkGESignaReader.h"
#include "vtkHDRReader.h"
#include "vtkImageReader2.h"
#include "vtkImageReader2Collection.h"
#include "vtkJPEGReader.h"
#include "vtkMetaImageReader.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkObjectFactoryCollection.h"
#include "vtkPNGReader.h"
#include "vtkPNMReader.h"
#include "vtkSLCReader.h"
#include "vtkTGAReader.h"
#include "vtkTIFFReader.h"
// Destroying the prototype readers requires information keys.
// Include the manager here to make sure the keys are not destroyed
// until after the AvailableReaders singleton has been destroyed.
#include "vtkFilteringInformationKeyManager.h"
#include <sstream>
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkImageReader2Factory);
//----------------------------------------------------------------------------
class vtkImageReader2FactoryCleanup
{
public:
inline void Use() {}
~vtkImageReader2FactoryCleanup()
{
if (vtkImageReader2Factory::AvailableReaders)
{
vtkImageReader2Factory::AvailableReaders->Delete();
vtkImageReader2Factory::AvailableReaders = nullptr;
}
}
};
static vtkImageReader2FactoryCleanup vtkImageReader2FactoryCleanupGlobal;
//----------------------------------------------------------------------------
vtkImageReader2Collection* vtkImageReader2Factory::AvailableReaders;
//----------------------------------------------------------------------------
void vtkImageReader2Factory::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Available Readers : ";
if (AvailableReaders)
{
AvailableReaders->PrintSelf(os, indent);
}
else
{
os << "None.";
}
}
//----------------------------------------------------------------------------
void vtkImageReader2Factory::RegisterReader(vtkImageReader2* r)
{
vtkImageReader2Factory::InitializeReaders();
AvailableReaders->AddItem(r);
}
//----------------------------------------------------------------------------
vtkImageReader2* vtkImageReader2Factory::CreateImageReader2(const char* path)
{
vtkImageReader2Factory::InitializeReaders();
vtkImageReader2* ret;
vtkNew<vtkCollection> collection;
vtkObjectFactory::CreateAllInstance("vtkImageReaderObject", collection);
// first try the current registered object factories to see
// if one of them can
for (collection->InitTraversal(); vtkObject* object = collection->GetNextItemAsObject();)
{
ret = vtkImageReader2::SafeDownCast(object);
if (ret && ret->CanReadFile(path))
{
return ret;
}
}
// Then try all available readers
vtkCollectionSimpleIterator sit;
for (vtkImageReader2Factory::AvailableReaders->InitTraversal(sit);
(ret = vtkImageReader2Factory::AvailableReaders->GetNextImageReader2(sit));)
{
if (ret->CanReadFile(path))
{
// like a new call
return ret->NewInstance();
}
}
return nullptr;
}
//----------------------------------------------------------------------------
vtkImageReader2* vtkImageReader2Factory::CreateImageReader2FromExtension(const char* extension)
{
vtkImageReader2Factory::InitializeReaders();
vtkImageReader2* ret;
vtkNew<vtkCollection> collection;
vtkObjectFactory::CreateAllInstance("vtkImageReaderObject", collection);
// first try the current registered object factories to see
// if one of them can
for (collection->InitTraversal(); vtkObject* object = collection->GetNextItemAsObject();)
{
ret = vtkImageReader2::SafeDownCast(object);
if (ret)
{
const char* extensions = ret->GetFileExtensions();
if (vtkImageReader2Factory::CheckExtensionIsInExtensions(extension, extensions))
{
return ret;
}
}
}
// Then try all available readers
vtkCollectionSimpleIterator sit;
for (vtkImageReader2Factory::AvailableReaders->InitTraversal(sit);
(ret = vtkImageReader2Factory::AvailableReaders->GetNextImageReader2(sit));)
{
const char* extensions = ret->GetFileExtensions();
if (vtkImageReader2Factory::CheckExtensionIsInExtensions(extension, extensions))
{
return ret->NewInstance();
}
}
return nullptr;
}
//----------------------------------------------------------------------------
bool vtkImageReader2Factory::CheckExtensionIsInExtensions(
const char* extension, const char* extensions)
{
std::istringstream iss(extensions);
std::string localExtension;
while (iss >> localExtension)
{
if (localExtension == std::string(extension) || localExtension == "." + std::string(extension))
{
return true;
}
}
return false;
}
//----------------------------------------------------------------------------
void vtkImageReader2Factory::InitializeReaders()
{
if (vtkImageReader2Factory::AvailableReaders)
{
return;
}
vtkImageReader2FactoryCleanupGlobal.Use();
vtkImageReader2Factory::AvailableReaders = vtkImageReader2Collection::New();
vtkImageReader2* reader;
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkPNGReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkPNMReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkTIFFReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkBMPReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkSLCReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkHDRReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkJPEGReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkGESignaReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkMetaImageReader::New()));
reader->Delete();
vtkImageReader2Factory::AvailableReaders->AddItem((reader = vtkTGAReader::New()));
reader->Delete();
}
//----------------------------------------------------------------------------
void vtkImageReader2Factory::GetRegisteredReaders(vtkImageReader2Collection* collection)
{
vtkImageReader2Factory::InitializeReaders();
// get all dynamic readers
vtkObjectFactory::CreateAllInstance("vtkImageReaderObject", collection);
// get the current registered readers
vtkImageReader2* ret;
vtkCollectionSimpleIterator sit;
for (vtkImageReader2Factory::AvailableReaders->InitTraversal(sit);
(ret = vtkImageReader2Factory::AvailableReaders->GetNextImageReader2(sit));)
{
collection->AddItem(ret);
}
}
VTK_ABI_NAMESPACE_END
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