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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright 2008 Sandia Corporation
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Sandia-USGov
#include "vtkTextCodecFactory.h"
#include "vtkObjectFactory.h"
#include "vtkTextCodec.h"
#include "vtkASCIITextCodec.h"
#include "vtkUTF16TextCodec.h"
#include "vtkUTF8TextCodec.h"
#include <algorithm>
#include <vector>
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkTextCodecFactory);
class vtkTextCodecFactory::CallbackVector : public std::vector<vtkTextCodecFactory::CreateFunction>
{
};
vtkTextCodecFactory::CallbackVector* vtkTextCodecFactory::Callbacks = nullptr;
// Ensures that there are no leaks when the application exits.
class vtkTextCodecCleanup
{
public:
void Use() {}
~vtkTextCodecCleanup() { vtkTextCodecFactory::UnRegisterAllCreateCallbacks(); }
};
// Used to clean up the Callbacks
static vtkTextCodecCleanup vtkCleanupTextCodecGlobal;
void vtkTextCodecFactory::PrintSelf(ostream& os, vtkIndent indent)
{
os << indent << "vtkTextCodecFactory (" << this << ") \n";
indent = indent.GetNextIndent();
if (nullptr != vtkTextCodecFactory::Callbacks)
{
os << vtkTextCodecFactory::Callbacks->size() << " Callbacks registered\n";
}
else
{
os << "No Callbacks registered.\n";
}
this->Superclass::PrintSelf(os, indent.GetNextIndent());
}
void vtkTextCodecFactory::RegisterCreateCallback(vtkTextCodecFactory::CreateFunction callback)
{
if (!vtkTextCodecFactory::Callbacks)
{
Callbacks = new vtkTextCodecFactory::CallbackVector();
vtkCleanupTextCodecGlobal.Use();
vtkTextCodecFactory::Initialize();
}
if (find(vtkTextCodecFactory::Callbacks->begin(), vtkTextCodecFactory::Callbacks->end(),
callback) == vtkTextCodecFactory::Callbacks->end())
{
vtkTextCodecFactory::Callbacks->push_back(callback);
}
}
void vtkTextCodecFactory::UnRegisterCreateCallback(vtkTextCodecFactory::CreateFunction callback)
{
// we don't know for sure what order we are called in so if the global ones goes first this is
// nullptr
if (vtkTextCodecFactory::Callbacks)
{
for (std::vector<vtkTextCodecFactory::CreateFunction>::iterator i =
vtkTextCodecFactory::Callbacks->begin();
i != vtkTextCodecFactory::Callbacks->end(); ++i)
{
if (*i == callback)
{
vtkTextCodecFactory::Callbacks->erase(i);
break;
}
}
if (vtkTextCodecFactory::Callbacks->empty())
{
delete vtkTextCodecFactory::Callbacks;
vtkTextCodecFactory::Callbacks = nullptr;
}
}
}
void vtkTextCodecFactory::UnRegisterAllCreateCallbacks()
{
delete vtkTextCodecFactory::Callbacks;
vtkTextCodecFactory::Callbacks = nullptr;
}
vtkTextCodec* vtkTextCodecFactory::CodecForName(const char* codecName)
{
if (!vtkTextCodecFactory::Callbacks)
{
vtkTextCodecFactory::Initialize();
}
std::vector<vtkTextCodecFactory::CreateFunction>::iterator CF_i;
for (CF_i = Callbacks->begin(); CF_i != Callbacks->end(); ++CF_i)
{
vtkTextCodec* outCodec = (*CF_i)();
if (outCodec)
{
if (outCodec->CanHandle(codecName))
{
return outCodec;
}
else
{
outCodec->Delete();
}
}
}
return nullptr;
}
vtkTextCodec* vtkTextCodecFactory::CodecToHandle(istream& SampleData)
{
if (!vtkTextCodecFactory::Callbacks)
{
vtkTextCodecFactory::Initialize();
}
std::vector<vtkTextCodecFactory::CreateFunction>::iterator CF_i;
for (CF_i = Callbacks->begin(); CF_i != Callbacks->end(); ++CF_i)
{
vtkTextCodec* outCodec = (*CF_i)();
if (nullptr != outCodec)
{
if (outCodec->IsValid(SampleData))
{
return outCodec;
}
else
{
outCodec->Delete();
}
}
}
return nullptr;
}
static vtkTextCodec* vtkASCIITextCodecFromCallback()
{
return vtkASCIITextCodec::New();
}
static vtkTextCodec* vtkUTF8TextCodecFromCallback()
{
return vtkUTF8TextCodec::New();
}
static vtkTextCodec* vtkUTF16TextCodecFromCallback()
{
return vtkUTF16TextCodec::New();
}
void vtkTextCodecFactory::Initialize()
{
if (!vtkTextCodecFactory::Callbacks)
{
vtkTextCodecFactory::RegisterCreateCallback(vtkASCIITextCodecFromCallback);
vtkTextCodecFactory::RegisterCreateCallback(vtkUTF8TextCodecFromCallback);
vtkTextCodecFactory::RegisterCreateCallback(vtkUTF16TextCodecFromCallback);
}
}
vtkTextCodecFactory::vtkTextCodecFactory() = default;
vtkTextCodecFactory::~vtkTextCodecFactory() = default;
VTK_ABI_NAMESPACE_END
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