Function TestWriteToUnicodeFile

IO/Image/Testing/Cxx/TestWriteToUnicodeFile.cxx:25–132

#include <iostream>

int TestWriteToUnicodeFile(int argc, char* argv[])
{
  if (argc <= 1)
  {
    std::cout << "Usage: " << argv[0] << " <output file name>" << std::endl;
    return EXIT_FAILURE;
  }

  const char* tdir =
    vtkTestUtilities::GetArgOrEnvOrDefault("-T", argc, argv, "VTK_TEMP_DIR", "Testing/Temporary");
  std::string tempDir = tdir;
  delete[] tdir;
  if (tempDir.empty())
  {
    std::cout << "Could not determine temporary directory.\n";
    return EXIT_FAILURE;
  }

  tempDir = tempDir + "/" +
    "\xc3\xba\xce\xae\xd1\x97\xc3\xa7\xe1\xbb\x99\xe2\x82\xab\xe2\x84\xae"; // u8"úήїçộ₫℮"
  if (!vtksys::SystemTools::FileExists(tempDir))
  {
    vtksys::SystemTools::MakeDirectory(tempDir);
  }

  std::string filename = tempDir + "/" + "\xef\xbd\xb7\xef\xbe\x80"; // u8"ｷﾀ"
  filename.append(argv[1]);
  size_t dotpos = filename.find_last_of('.');
  if (dotpos == std::string::npos)
  {
    std::cout << "Could not determine file extension.\n";
    return EXIT_FAILURE;
  }
  std::string fileext = filename.substr(dotpos + 1);
  filename.insert(dotpos, "\xea\x92\x84"); // u8"ꒄ"

  int extent[6] = { 0, 99, 0, 99, 0, 0 };
  vtkSmartPointer<vtkImageCanvasSource2D> imageSource =
    vtkSmartPointer<vtkImageCanvasSource2D>::New();
  imageSource->SetExtent(extent);
  imageSource->SetScalarTypeToUnsignedChar();
  imageSource->SetNumberOfScalarComponents(3);
  imageSource->SetDrawColor(127, 45, 255);
  imageSource->FillBox(0, 99, 0, 99);
  imageSource->SetDrawColor(255, 255, 255);
  imageSource->FillBox(40, 70, 20, 50);
  imageSource->Update();

  vtkSmartPointer<vtkImageCast> filter = vtkSmartPointer<vtkImageCast>::New();
  filter->SetOutputScalarTypeToUnsignedChar();
  filter->SetInputConnection(imageSource->GetOutputPort());
  filter->Update();

  vtkSmartPointer<vtkImageWriter> writer;
  vtkSmartPointer<vtkImageReader2> reader;

  // Delete any existing files to prevent false failures
  if (!vtksys::SystemTools::FileExists(filename))