text: /*=========================================================================
  
    Program:   ParaView
    Module:    vtkSMExtractWriterProxy.cxx
  
    Copyright (c) Kitware, Inc.
    All rights reserved.
    See Copyright.txt or http://www.paraview.org/HTML/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 "vtkSMExtractWriterProxy.h"
  
  #include "vtkLogger.h"
  #include "vtkObjectFactory.h"
  #include "vtkPVStringFormatter.h"
  #include "vtkSMExtractsController.h"
  
  #include <vtksys/RegularExpression.hxx>
  #include <vtksys/SystemTools.hxx>
  
  #include <string>
  
  //----------------------------------------------------------------------------
  vtkSMExtractWriterProxy::vtkSMExtractWriterProxy() = default;
  
  //----------------------------------------------------------------------------
  vtkSMExtractWriterProxy::~vtkSMExtractWriterProxy() = default;
  
  //----------------------------------------------------------------------------
  std::string vtkSMExtractWriterProxy::GenerateExtractsFileName(
    const std::string& filename, const char* outDir)
  {
    // `FileIsFullPath` check helps us support absolute paths provided on
    // individual extractor.
    std::string name = vtksys::SystemTools::FileIsFullPath(filename)
      ? filename
      : vtksys::SystemTools::JoinPath({ outDir, "/" + filename });
  
    // check for old format for ts and t
    bool oldFormatUsed = false;
    vtksys::RegularExpression regex(R"=((%[.0-9]*)((ts)|(t)))=");
    std::string possibleOldFormatString1 = name;
    while (regex.find(name))
    {
      if (regex.match(2) == "ts")
      {
        oldFormatUsed = true;
        // assume that precision information will always have the format, eg %.[0-9]*
        std::string formatString = "0" + regex.match(1).substr(2) + "d";
        std::string replacement = "{timestep:" + formatString + "}";
        name.replace(regex.start(), regex.end() - regex.start(), replacement);
      }
      else if (regex.match(2) == "t")
      {
        oldFormatUsed = true;
        // remove the % symbol from the formatString
        std::string formatString = regex.match(1).substr(1) + "f";
        std::string replacement = "{time:" + formatString + "}";
        name.replace(regex.start(), regex.end() - regex.start(), replacement);
      }
      else
      {
        vtkLogF(ERROR,
          "Unknown conversion specified '%s' in '%s'. Filename may not be picked correctly.",
          regex.match(2).c_str(), regex.match(0).c_str());
        break;
      }
    }
  
    // check for old format for cm
    std::string possibleOldFormatString2 = name;
    vtksys::SystemTools::ReplaceString(name, "%cm", "{camera}");
    if (possibleOldFormatString2 != name || oldFormatUsed)
    {
      vtkLogF(WARNING, "Legacy formatting pattern detected. Please replace '%s' with '%s'.",
        possibleOldFormatString1.c_str(), name.c_str());
    }
  
    return vtkPVStringFormatter::Format(name);
  }
  
  //----------------------------------------------------------------------------
  void vtkSMExtractWriterProxy::PrintSelf(ostream& os, vtkIndent indent)
  {
    this->Superclass::PrintSelf(os, indent);
  }
  