QFtp: downloading a whole folder from a remote server.

[daracne]

I'll look around and see if I can find the code I wrote to do this, however I can tell you that my implementation used two member functions in QFtp.

QFtp::list()
signal QFtp::listInfo(const QUrlInfo& i)

[balazsbela]

I started writing one using those two.
It would be great if you could find it.
It is getting late, I think I'll continue to write that tomorrow.
Thanks for replying.

[balazsbela]

So if I'm right this should list all folders and files(even in subfolders) in the folder I want to download.

Here is the code:

void getFolder(QString path)
{
 ftp->list(path);
 connect(ftp,SIGNAL(listInfo(QUrlInfo)),this,SLOT(processFolder(QUrlInfo)));
}
 
void processFolder(const QUrlInfo &i)
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 if (i.isDir())
 {
  cout <<"Directory:"<< i.name()<<"\n";
  ftp->list(i.name());
 }
 else
  {
   cout <<"File:"<<i.name()<<"\n";
  }
}

void getFolder(QString path)
{
 ftp->list(path);
 connect(ftp,SIGNAL(listInfo(QUrlInfo)),this,SLOT(processFolder(QUrlInfo)));
}

void processFolder(const QUrlInfo &i)
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 if (i.isDir())
 {
  cout <<"Directory:"<< i.name()<<"\n";
  ftp->list(i.name());
 }
 else
  {
   cout <<"File:"<<i.name()<<"\n";
  }
}

To copy to clipboard, switch view to plain text mode 

Unfortunately it doesn't.
It lists all files for one subfolder but not for every subfolder.
Why? What am I doing wrong ?

Is there any way to tell QFtp -> list() to list folders first ?
Like in

QDir::DirsFirst

QDir::DirsFirst

To copy to clipboard, switch view to plain text mode 

.
Also I would like to list them as /subfolder/file or /subfolder/subfolder/file but QUrlInfo doesn't have a function to return the path to a file.
Is there any way to convert it to QUrl?
Any help is appreciated.

[jacek]

So if I'm right this should list all folders and files(even in subfolders) in the folder I want to download.
[...]
Unfortunately it doesn't.

The problem is that you don't change the current directory.

Try something like:

void getFolder(QString path)
{
 pendingPaths.append( path );
 connect(ftp,SIGNAL(listInfo(QUrlInfo)),this,SLOT(processFolder(QUrlInfo)));
 connect(ftp,SIGNAL(commandStarted(int)),this,SLOT(commandStarted(int)));
 ftp->list(path);
}
 
void processFolder(const QUrlInfo &i)
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 if (i.isDir())
 {
  cout <<"Directory:"<< i.name()<<"\n";
  QString dir = currentPath + QDir::separator() + i.name();
  pendingPaths.append( dir );
  ftp->list( dir );
 }
 ...
}
 
void commandStarted( int id )
{
   Q_UNUSED( id );
   if( ftp->currentCommand() == QFtp::List ) {
      currentPath = pendingPaths.first();
      pendingPaths.removeFirst();
   }
}

void getFolder(QString path)
{
 pendingPaths.append( path );
 connect(ftp,SIGNAL(listInfo(QUrlInfo)),this,SLOT(processFolder(QUrlInfo)));
 connect(ftp,SIGNAL(commandStarted(int)),this,SLOT(commandStarted(int)));
 ftp->list(path);
}

void processFolder(const QUrlInfo &i)
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 if (i.isDir())
 {
  cout <<"Directory:"<< i.name()<<"\n";
  QString dir = currentPath + QDir::separator() + i.name();
  pendingPaths.append( dir );
  ftp->list( dir );
 }
 ...
}

void commandStarted( int id )
{
   Q_UNUSED( id );
   if( ftp->currentCommand() == QFtp::List ) {
      currentPath = pendingPaths.first();
      pendingPaths.removeFirst();
   }
}

To copy to clipboard, switch view to plain text mode 

[balazsbela]

Nevermind I got it working, but it was a lot more complicated:
Here is the code:

void qOrganizer::getFolder(QString path,QString localPath)
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 QDir localDir(localPath);
 listCommandVector.append(ftp->list(path));
 stack.push(path); 
 localDir.mkdir(path);
 connect(ftp,SIGNAL(listInfo(QUrlInfo)),this,SLOT(processFolder(QUrlInfo)));
 connect(ftp,SIGNAL(commandFinished(int,bool)),this,SLOT(processCommand(int,bool)));
 ftpEntryes = new QStringList;
 lpath=localPath;
}
 
void qOrganizer::processFolder(const QUrlInfo &i)
{
 if(i.isDir())
  {
   entryList.push_front(i); 
  }
   else 
     if(i.isFile()) 
      entryList.push_back(i);     
}
 
static int nrcomfin=0;
void qOrganizer::processCommand(int com,bool err)
{
 nrcomfin++;
 QString path;
 QTextStream cout(stdout, QIODevice::WriteOnly);
 bool containsSubfolders=0;
 bool entryExists=0;
 QDir localDir(lpath);
 
 if(listCommandVector.indexOf(com)!=-1)
  { 
   path = stack.top();
   foreach(QUrlInfo entry,entryList)
    {
      if((entry.isFile())&&(listedFiles.indexOf(entry)==-1))
       {
        QString foldPath = path+"/"+entry.name();
        ftpEntryes->append(foldPath);
        listedFiles.append(entry);
        cout <<"File:"<<foldPath<<"\n";
        entryExists=1;
       }
       else
        if((entry.isDir())&&(listedFolders.indexOf(entry)==-1))
         {
          QString foldPath = path+"/"+entry.name();
         // cout <<"Folder:"<<foldPath<<"\n";
          stack.push(foldPath); 
          localDir.mkdir(foldPath);
         // cout << stack.top() <<"\n";
          listCommandVector.append(ftp->list(foldPath));
          listedFolders.append(entry);
          containsSubfolders=1;
          entryExists=1;
          break;
         }
    }
   if((stack.size()>1)&&(nrcomfin%2!=0)) stack.pop();
   entryList.clear();
   //cout << stack.size() << stack.top() <<" "<<nrcomfin<<"\n"; 
   if((!containsSubfolders)&&(entryExists)) 
      listCommandVector.append(ftp->list(stack.top()));
   if((!containsSubfolders) && (!entryExists)) downloadFiles();   
  }
  else 
   if(getCommandVector.indexOf(com)!=-1)
    {
     ftpFile=fileQueue.dequeue();
     ftpFile-> close();
     cout <<"Completed:"<<ftpFile->fileName()<<" "<<"Errors:"<<err<<"\n";
     ftpFile->deleteLater();
    }; 
}
 
void qOrganizer::downloadFiles()
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 cout <<"Downloading"<<"\n";
 foreach(QString entry,*ftpEntryes)
 {
  QFile *file = new QFile(lpath+entry);
  cout << "get " << entry <<" "<<lpath+entry<<"\n";
  fileQueue.enqueue(file);
  file->open(QIODevice::WriteOnly);
  getCommandVector.append(ftp -> get(entry,file));
 }
}

void qOrganizer::getFolder(QString path,QString localPath)
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 QDir localDir(localPath);
 listCommandVector.append(ftp->list(path));
 stack.push(path); 
 localDir.mkdir(path);
 connect(ftp,SIGNAL(listInfo(QUrlInfo)),this,SLOT(processFolder(QUrlInfo)));
 connect(ftp,SIGNAL(commandFinished(int,bool)),this,SLOT(processCommand(int,bool)));
 ftpEntryes = new QStringList;
 lpath=localPath;
}

void qOrganizer::processFolder(const QUrlInfo &i)
{
 if(i.isDir())
  {
   entryList.push_front(i); 
  }
   else 
     if(i.isFile()) 
      entryList.push_back(i);     
}

static int nrcomfin=0;
void qOrganizer::processCommand(int com,bool err)
{
 nrcomfin++;
 QString path;
 QTextStream cout(stdout, QIODevice::WriteOnly);
 bool containsSubfolders=0;
 bool entryExists=0;
 QDir localDir(lpath);
 
 if(listCommandVector.indexOf(com)!=-1)
  { 
   path = stack.top();
   foreach(QUrlInfo entry,entryList)
    {
      if((entry.isFile())&&(listedFiles.indexOf(entry)==-1))
       {
        QString foldPath = path+"/"+entry.name();
        ftpEntryes->append(foldPath);
        listedFiles.append(entry);
        cout <<"File:"<<foldPath<<"\n";
        entryExists=1;
       }
       else
        if((entry.isDir())&&(listedFolders.indexOf(entry)==-1))
         {
          QString foldPath = path+"/"+entry.name();
         // cout <<"Folder:"<<foldPath<<"\n";
          stack.push(foldPath); 
          localDir.mkdir(foldPath);
         // cout << stack.top() <<"\n";
          listCommandVector.append(ftp->list(foldPath));
          listedFolders.append(entry);
          containsSubfolders=1;
          entryExists=1;
          break;
         }
    }
   if((stack.size()>1)&&(nrcomfin%2!=0)) stack.pop();
   entryList.clear();
   //cout << stack.size() << stack.top() <<" "<<nrcomfin<<"\n"; 
   if((!containsSubfolders)&&(entryExists)) 
      listCommandVector.append(ftp->list(stack.top()));
   if((!containsSubfolders) && (!entryExists)) downloadFiles();   
  }
  else 
   if(getCommandVector.indexOf(com)!=-1)
    {
     ftpFile=fileQueue.dequeue();
     ftpFile-> close();
     cout <<"Completed:"<<ftpFile->fileName()<<" "<<"Errors:"<<err<<"\n";
     ftpFile->deleteLater();
    }; 
}

void qOrganizer::downloadFiles()
{
 QTextStream cout(stdout, QIODevice::WriteOnly);
 cout <<"Downloading"<<"\n";
 foreach(QString entry,*ftpEntryes)
 {
  QFile *file = new QFile(lpath+entry);
  cout << "get " << entry <<" "<<lpath+entry<<"\n";
  fileQueue.enqueue(file);
  file->open(QIODevice::WriteOnly);
  getCommandVector.append(ftp -> get(entry,file));
 }
}

To copy to clipboard, switch view to plain text mode 

Not too pretty but it works!