Method IsDICOMFile

Utilities/DICOMParser/DICOMParser.cxx:150–198

read magic number from file return true if this is your image type, false if it is not

// return true if this is your image type, false if it is not
//
bool DICOMParser::IsDICOMFile(DICOMFile* file)
{
  char magic_number[4];
  file->SkipToStart();
  file->Read(static_cast<void*>(magic_number), 4);
  if (CheckMagic(magic_number))
  {
    return (true);
  }
  // try with optional skip
  else
  {
    file->Skip(OPTIONAL_SKIP - 4);
    file->Read(static_cast<void*>(magic_number), 4);
    if (CheckMagic(magic_number))
    {
      return true;
    }
    else
    {

#ifndef DICOMPARSER_IGNORE_MAGIC_NUMBER
      return false;
#else
      //
      // Try it anyways...
      //

      file->SkipToStart();

      doublebyte group = file->ReadDoubleByte();
      bool dicom;
      if (group == 0x0002 || group == 0x0008)
      {
        std::cerr << "No DICOM magic number found, but file appears to be DICOM." << std::endl;
        std::cerr << "Proceeding without caution." << std::endl;
        dicom = true;
      }
      else
      {
        dicom = false;
      }
      file->SkipToStart();

      return dicom;
#endif // DICOMPARSER_IGNORE_MAGIC_NUMBER
    }
  }
}

bool DICOMParser::IsValidRepresentation(doublebyte rep, quadbyte& len, VRTypes& mytype)
{