CTK/Libs/Core/ctkUtils.cpp

/*=========================================================================

  Library:   CTK

  Copyright (c) Kitware Inc. 
  All rights reserved.
  Distributed under a BSD License. See LICENSE.txt file.

  This software is distributed "AS IS" 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 "ctkUtils.h"

// STD includes
#include <algorithm>

//------------------------------------------------------------------------------
void ctkUtils::qListToSTLVector(const QStringList& list,
                                 std::vector<char*>& vector)
{
  // Resize if required
  if (list.count() != static_cast<int>(vector.size()))
    {
    vector.resize(list.count());
    }
  for (int i = 0; i < list.count(); ++i)
    {
    // Allocate memory
    char* str = new char[list[i].size()+1];
    strcpy(str, list[i].toLatin1());
    vector[i] = str;
    }
}

//------------------------------------------------------------------------------
namespace
{
/// Convert QString to std::string
static std::string qStringToSTLString(const QString& qstring)
{
  return qstring.toStdString();
}
}

//------------------------------------------------------------------------------
void ctkUtils::qListToSTLVector(const QStringList& list,
                                 std::vector<std::string>& vector)
{
  // To avoid unnessesary relocations, let's reserve the required amount of space
  vector.reserve(list.size());
  std::transform(list.begin(),list.end(),std::back_inserter(vector),&qStringToSTLString);
}

//------------------------------------------------------------------------------
void ctkUtils::stlVectorToQList(const std::vector<std::string>& vector,
                                 QStringList& list)
{
  std::transform(vector.begin(),vector.end(),std::back_inserter(list),&QString::fromStdString);
}