(C++) Boost.Filesystem example 2: count C++ webpages, GUI

This Boost.Filesystem example is the GUI version of Boost.Filesystem example 1: count C++ webpages.

Operating system: Ubuntu 10.04 LTS Lucid Lynx

IDE: Qt Creator 2.0.0

Project type: GUI Application

Compiler: G++ 4.4.1

Libraries used:

Boost: version 1.40
Qt: version 4.7.0 (32 bit)

Qt project file


#-------------------------------------------------

#

# Project created by QtCreator 2010-08-02T16:56:42

#

#-------------------------------------------------

QT       += core gui

TARGET = CppFilesystemExample2

TEMPLATE = app

SOURCES += main.cpp\

        dialog.cpp

HEADERS  += dialog.h

FORMS    += dialog.ui

LIBS += -L/usr/local/lib -lboost_system

LIBS += -L/usr/local/lib -lboost_filesystem

RESOURCES += \

    resources.qrc

Source code

dialog.h


#ifndef DIALOG_H

#define DIALOG_H



#include <QDialog>



namespace Ui {

  class Dialog;

}



class Dialog : public QDialog

{

  Q_OBJECT



public:

  explicit Dialog(QWidget *parent = 0);

  ~Dialog();



protected:

  void changeEvent(QEvent *e);



private:

  Ui::Dialog *ui;

};



#endif // DIALOG_H

dialog.cpp


#include "dialog.h"

#include "ui_dialog.h"



#include <cassert>

#include <iostream>

#include <string>

#include <boost/filesystem.hpp>

#include <boost/foreach.hpp>

#include <boost/timer.hpp>



int Count_my_cpp_pages()

{

  const std::string my_folder_name = "/home/richel/RichelbilderbeekNl";

  const int min_filesize = 1000; //in bytes



  const boost::filesystem::path my_folder

      = boost::filesystem::system_complete(

          boost::filesystem::path(my_folder_name ));



  assert(boost::filesystem::is_directory(my_folder));



  int n = 0;



  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();

      const std::string full_filename = my_folder_name + "/" + filename;

      const int filesize = boost::filesystem::file_size(full_filename);

      if (filename.find(".htm")!=std::string::npos

       && filename[0] == 'C'

       && filename[1] == 'p'

       && filename[2] == 'p'

       && filesize > min_filesize)

      {

        ++n;

        std::clog << "(" << filesize << ") " << filename << '\n';

      }

    }

  }

  std::clog

    << "\nNumber of Cpp***.htm files bigger than "

    << min_filesize << " bytes: " << n << '\n';

  return n;

}



Dialog::Dialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::Dialog)

{

  ui->setupUi(this);

  ui->lcdNumber->display(Count_my_cpp_pages());

}



Dialog::~Dialog()

{

  delete ui;

}



void Dialog::changeEvent(QEvent *e)

{

  QDialog::changeEvent(e);

  switch (e->type()) {

  case QEvent::LanguageChange:

    ui->retranslateUi(this);

    break;

  default:

    break;

  }

}

main.cpp


#include <QtGui/QApplication>

#include "dialog.h"



int main(int argc, char *argv[])

{

  QApplication a(argc, argv);

  Dialog w;

  w.show();

  return a.exec();

}

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