Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++98

Compiler(s):

G++ 4.9.2

Libraries used:

STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppGetFilesInFolder/CppGetFilesInFolder.pro


include(../../ConsoleApplication.pri) #Or use the code below

# QT += core

# QT += gui

# greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

# CONFIG   += console

# CONFIG   -= app_bundle

# TEMPLATE = app

# CONFIG(release, debug|release) {

#   DEFINES += NDEBUG NTRACE_BILDERBIKKEL

# }

# QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++

# unix {

#   QMAKE_CXXFLAGS += -Werror

# }



include(../../Libraries/BoostAll.pri)



SOURCES += main.cpp

./CppGetFilesInFolder/main.cpp


#include <iostream>

#include <string>

#include <vector>



#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Weffc++"

#pragma GCC diagnostic ignored "-Wunused-local-typedefs"

#include <boost/filesystem.hpp>



#include <QDir>

#pragma GCC diagnostic pop



//From http://www.richelbilderbeek.nl/CppGetFilesInFolder.htm

const std::vector<std::string> GetFilesInFolderBoost(const std::string& folder)

{

  std::vector<std::string> v;



  const boost::filesystem::path my_folder

    = boost::filesystem::system_complete(

        boost::filesystem::path(folder));



  if (!boost::filesystem::is_directory(my_folder)) return v;



  const boost::filesystem::directory_iterator j;

  for ( boost::filesystem::directory_iterator i(my_folder);

        i != j;

        ++i)

  {

    if ( boost::filesystem::is_regular_file( i->status() ) )

    {

      const std::string filename = i->path().filename().string();



      //Works with older version of Boost.Filesystem:

      //const std::string filename = i->path().filename();

      v.push_back(filename);

    }

  }

  return v;

}



///GetFilesInFolder creates a std::vector of filenames in a certain folder.

//From http://www.richelbilderbeek.nl/CppGetFilesInFolder.htm

const std::vector<std::string> GetFilesInFolderQt(const std::string& folder)

{

  QDir dir(folder.c_str());

  dir.setFilter(QDir::Files);

  const QFileInfoList list = dir.entryInfoList();



  //Convert QFileInfoList to std::vector<std::string> of filenames

  std::vector<std::string> v;

  const int size = list.size();

  for (int i = 0; i != size; ++i)

  {

    const std::string file_name = list.at(i).fileName().toStdString();

    v.push_back(file_name);

  }

  return v;

}



int main()

{

  const std::string folder = ".";

  assert(GetFilesInFolderBoost(folder) == GetFilesInFolderQt(folder));

  const std::vector<std::string> v = GetFilesInFolderBoost(folder);

  std::copy(v.begin(),v.end(),std::ostream_iterator<std::string>(std::cout,"\n"));

  std::cout << "Number of files: " << v.size() << '\n';

}



/* Screen output:



Makefile

Makefile.Debug

Makefile.Release

Number of files: 3



*/

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(C++) GetFilesInFolder

Technical facts

Qt project file: ./CppGetFilesInFolder/CppGetFilesInFolder.pro

./CppGetFilesInFolder/main.cpp