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QTextStream reading line by line works only once

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  • S Offline
    S Offline
    Sucharek
    wrote on last edited by
    #1

    Hi, so I have an issue with QTextStream.
    I open the file, and read the lines I want to, but when I run it a second time, it doesn't do anything.

    Snippet of the line reading:

    QFile *config = new QFile(Path);
        QTextStream in(config);
        config->open(QIODevice::ReadOnly | QIODevice::Text);
    
        in.readLine();
        Slot1Name = in.readLine();      Slot1Text = in.readLine();
        in.readLine();
        Slot2Name = in.readLine();      Slot2Text = in.readLine();
        in.readLine();
        Slot3Name = in.readLine();      Slot3Text = in.readLine();
        in.readLine();
        Slot4Name = in.readLine();      Slot4Text = in.readLine();
        in.readLine();
        Slot5Name = in.readLine();      Slot5Text = in.readLine();
        in.readLine();
        Slot6Name = in.readLine();      Slot6Text = in.readLine();
        in.readLine();
        Slot7Name = in.readLine();      Slot7Text = in.readLine();
        in.readLine();
        Slot8Name = in.readLine();      Slot8Text = in.readLine();
        in.readLine();
        Slot9Name = in.readLine();      Slot9Text = in.readLine();
        in.readLine();
        Slot10Name = in.readLine();     Slot10Text = in.readLine();
        in.readLine();
        Slot11Name = in.readLine();     Slot11Text = in.readLine();
        in.readLine();
        Slot12Name = in.readLine();     Slot12Text = in.readLine();
        in.readLine();
        Slot13Name = in.readLine();     Slot13Text = in.readLine();
        in.readLine();
        Slot14Name = in.readLine();     Slot14Text = in.readLine();
        in.readLine();
        Slot15Name = in.readLine();     Slot15Text = in.readLine();
        in.readLine();
        Slot16Name = in.readLine();     Slot16Text = in.readLine();
        in.readLine();
        Slot17Name = in.readLine();     Slot17Text = in.readLine();
        in.readLine();
        Slot18Name = in.readLine();     Slot18Text = in.readLine();
        in.readLine();
        Slot19Name = in.readLine();     Slot19Text = in.readLine();
        in.readLine();
        Slot20Name = in.readLine();     Slot20Text = in.readLine();
        config->close();
    
    JonBJ 1 Reply Last reply
    0
    • S Sucharek

      Hi, so I have an issue with QTextStream.
      I open the file, and read the lines I want to, but when I run it a second time, it doesn't do anything.

      Snippet of the line reading:

      QFile *config = new QFile(Path);
          QTextStream in(config);
          config->open(QIODevice::ReadOnly | QIODevice::Text);
      
          in.readLine();
          Slot1Name = in.readLine();      Slot1Text = in.readLine();
          in.readLine();
          Slot2Name = in.readLine();      Slot2Text = in.readLine();
          in.readLine();
          Slot3Name = in.readLine();      Slot3Text = in.readLine();
          in.readLine();
          Slot4Name = in.readLine();      Slot4Text = in.readLine();
          in.readLine();
          Slot5Name = in.readLine();      Slot5Text = in.readLine();
          in.readLine();
          Slot6Name = in.readLine();      Slot6Text = in.readLine();
          in.readLine();
          Slot7Name = in.readLine();      Slot7Text = in.readLine();
          in.readLine();
          Slot8Name = in.readLine();      Slot8Text = in.readLine();
          in.readLine();
          Slot9Name = in.readLine();      Slot9Text = in.readLine();
          in.readLine();
          Slot10Name = in.readLine();     Slot10Text = in.readLine();
          in.readLine();
          Slot11Name = in.readLine();     Slot11Text = in.readLine();
          in.readLine();
          Slot12Name = in.readLine();     Slot12Text = in.readLine();
          in.readLine();
          Slot13Name = in.readLine();     Slot13Text = in.readLine();
          in.readLine();
          Slot14Name = in.readLine();     Slot14Text = in.readLine();
          in.readLine();
          Slot15Name = in.readLine();     Slot15Text = in.readLine();
          in.readLine();
          Slot16Name = in.readLine();     Slot16Text = in.readLine();
          in.readLine();
          Slot17Name = in.readLine();     Slot17Text = in.readLine();
          in.readLine();
          Slot18Name = in.readLine();     Slot18Text = in.readLine();
          in.readLine();
          Slot19Name = in.readLine();     Slot19Text = in.readLine();
          in.readLine();
          Slot20Name = in.readLine();     Slot20Text = in.readLine();
          config->close();
      
      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by JonB
      #2

      @Sucharek
      Nobody can tell from this. You don't check the result from open(). We don't know whether Path might have changed. Or the file on disk or its content. You could try your reads directly from config instead to rule out the QTextStream being the issue.

      S 1 Reply Last reply
      2
      • JonBJ JonB

        @Sucharek
        Nobody can tell from this. You don't check the result from open(). We don't know whether Path might have changed. Or the file on disk or its content. You could try your reads directly from config instead to rule out the QTextStream being the issue.

        S Offline
        S Offline
        Sucharek
        wrote on last edited by
        #3

        Hi @JonB, I've realised, that I forgot to add something to my code, so it works now.
        Thanks for the help anyway.

        1 Reply Last reply
        0

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