Downloading many files

[ajaskier]

Hi, I have a problem with downloadig many files using QNetworkAccessManager. I was trying to adjust this code http://doc.qt.nokia.com/4.7-snapshot/network-downloadmanager.html, but my skill is too low. Could you help me to fix my code?

downloader.cpp


#include "downloader.h"

Downloader::Downloader(QStringList list, QObject *parent) :
QObject(parent)
{

size = list.size();

for(int it=0; it<size; it++) {
QString str = "http://www.merriam-webster.com/dictionary/" + list.at(it);
wordlist.push_back(str);
}

append(wordlist);

}

void Downloader::append(const QUrl &url)
{

if(downloadQueue.isEmpty())
QTimer::singleShot(0, this, SLOT(do_Download()));

downloadQueue.enqueue(url);

}

void Downloader::append(const QStringList &urllist)
{
foreach(QString url, urllist)
append(QUrl(url));

}

void Downloader::do_Download()
{


QUrl url = downloadQueue.dequeue();
QString filename = "G:/Documents and Settings/Olek/Desktop/downloader" + url.path() + ".txt";


qDebug() << filename;
filetxt = new QFile(filename);

if(!filetxt->open(QIODevice::WriteOnly))
{

qDebug() << "Unable to save the file";

delete filetxt;
filetxt = NULL;
return;
}


reply = manager.get(QNetworkRequest(url));

connect(reply, SIGNAL(finished()), this, SLOT(downloadFinished()));
connect(reply, SIGNAL(readyRead()), this, SLOT(downloadReadyRead()));

qDebug() << "I'm in downloadStarted()";

}

void Downloader::downloadReadyRead()
{

if(file.isEmpty()) file = reply->readAll();

if(!file.isEmpty()) {

// qDebug() << file;
qDebug() << "I'm in downloadReadyRead()";

filetxt->write(reply->readAll());
}

}

void Downloader::downloadFinished()
{

if(reply->error())
{

qDebug() << "Download failed";
}

// qDebug() << file;

if(filetxt)
{
filetxt->flush();
filetxt->close();

}


reply->deleteLater();
reply = NULL;


qDebug() << "I'm in downloadFinished()";

do_Download();

}





downloader.h


#ifndef DOWNLOADER_H
#define DOWNLOADER_H

#include <QObject>
#include <QtNetwork>
#include <QDebug>
#include <wavdownloader.h>

class Downloader : public QObject
{
Q_OBJECT
public:
explicit Downloader(QStringList list, QObject *parent = 0);
void downloadStarted();
QString file;
QFile *filetxt;
QString startName;
//QString from_Wav_Filename;
QStringList wordlist;


void append(const QUrl &url);
void append(const QStringList &urllist);

void doDownload();


int size;

signals:
// void finished();

public slots:
void downloadFinished();
void downloadReadyRead();
void do_Download();


private:
QNetworkAccessManager manager;
QNetworkReply *reply;
QQueue<QUrl> downloadQueue;

};

#endif // DOWNLOADER_H