mitkNavigationToolStorageDeserializer.cpp

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/*============================================================================
 
The Medical Imaging Interaction Toolkit (MITK)
 
Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.
 
Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.
 
============================================================================*/
 
//Poco headers
#include "Poco/Zip/Decompress.h"
#include "Poco/Path.h"
#include "Poco/File.h"
 
#include "mitkNavigationToolStorageDeserializer.h"
#include <mitkSceneIO.h>
#include <mitkIOUtil.h>
#include "mitkNavigationToolReader.h"
 
//POCO
#include <Poco/Exception.h>
 
 
#include "mitkIGTException.h"
#include "mitkIGTIOException.h"
 
 
mitk::NavigationToolStorageDeserializer::NavigationToolStorageDeserializer(mitk::DataStorage::Pointer dataStorage)
  {
  m_DataStorage = dataStorage;
  //create temp directory for this reader
  m_tempDirectory = mitk::IOUtil::CreateTemporaryDirectory("NavigationToolStorageDeserializerTmp_XXXXXX",mitk::IOUtil::GetTempPath());
  }
 
mitk::NavigationToolStorageDeserializer::~NavigationToolStorageDeserializer()
  {
  //remove temp directory
  Poco::File myFile(m_tempDirectory);
  try
    {
    if (myFile.exists()) myFile.remove();
    }
  catch(...)
    {
    MITK_ERROR << "Can't remove temp directory " << m_tempDirectory << "!";
    }
  }
 
mitk::NavigationToolStorage::Pointer mitk::NavigationToolStorageDeserializer::Deserialize(std::string filename)
  {
  //decompress zip file into temporary directory
  decompressFiles(filename,m_tempDirectory);
 
  //now read all files and convert them to navigation tools
  mitk::NavigationToolStorage::Pointer returnValue = mitk::NavigationToolStorage::New(m_DataStorage);
  bool cont = true;
  int i;
  for (i=0; cont==true; i++)
    {
    std::string fileName = m_tempDirectory + Poco::Path::separator() + "NavigationTool" + convertIntToString(i) + ".tool";
    mitk::NavigationToolReader::Pointer myReader = mitk::NavigationToolReader::New();
    mitk::NavigationTool::Pointer readTool = myReader->DoRead(fileName);
    if (readTool.IsNull()) cont = false;
    else returnValue->AddTool(readTool);
    //delete file
    std::remove(fileName.c_str());
    }
  if(i==1)
    {
    //throw an exception here in case of not finding any tool
    m_ErrorMessage = "Error: did not find any tool. \n Is this a tool storage file?";
    mitkThrowException(mitk::IGTException)<<"Error: did not find any tool. \n Is this a tool storage file?";
    }
  return returnValue;
  }
 
std::string mitk::NavigationToolStorageDeserializer::convertIntToString(int i)
{
std::string s;
std::stringstream out;
out << i;
s = out.str();
return s;
}
 
void mitk::NavigationToolStorageDeserializer::decompressFiles(std::string filename,std::string path)
{
  std::ifstream file( filename.c_str(), std::ios::binary );
  if (!file.good())
    {
    m_ErrorMessage = "Cannot open '" + filename + "' for reading";
    mitkThrowException(mitk::IGTException)<<"Cannot open"+filename+" for reading";
    }
 
  try
    {
    Poco::Zip::Decompress unzipper( file, Poco::Path( path ) );
    unzipper.decompressAllFiles();
    file.close();
    }
 
  catch(const Poco::IllegalStateException&) //temporary solution: replace this by defined exception handling later!
    {
    m_ErrorMessage = "Error: wrong file format! \n (please only load tool storage files)";
    mitkThrowException(mitk::IGTException) << m_ErrorMessage;
    }
 
  }