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How to read the files in XML

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  • sankarapandiyanS sankarapandiyan

    @aha_1980 said in I Got this as a error: declaration of 'QString filename' shadows a parameter:

    if you want to open it for reading?

    yes how to open and read and write

    aha_1980A Offline
    aha_1980A Offline
    aha_1980
    Lifetime Qt Champion
    wrote on last edited by
    #6

    @sankarapandiyan And have you the needed access rights?

    Qt has to stay free or it will die.

    sankarapandiyanS 1 Reply Last reply
    0
    • aha_1980A aha_1980

      @sankarapandiyan And have you the needed access rights?

      sankarapandiyanS Offline
      sankarapandiyanS Offline
      sankarapandiyan
      wrote on last edited by sankarapandiyan
      #7

      @aha_1980

      And have you the needed access rights?

      yes i have ,can you say how to do!

      aha_1980A 1 Reply Last reply
      0
      • sankarapandiyanS sankarapandiyan

        @aha_1980

        And have you the needed access rights?

        yes i have ,can you say how to do!

        aha_1980A Offline
        aha_1980A Offline
        aha_1980
        Lifetime Qt Champion
        wrote on last edited by
        #8

        @sankarapandiyan Then your code should work!

        What is the output of:

        file /home/newuser/Desktop/xmlfileoutput/filenamemw.xml/setting1xmlpage2.xml/setting2xmlpage3.xml/setting3xmlpage4.xml

        in a terminal?

        Qt has to stay free or it will die.

        sankarapandiyanS 2 Replies Last reply
        0
        • aha_1980A aha_1980

          @sankarapandiyan Then your code should work!

          What is the output of:

          file /home/newuser/Desktop/xmlfileoutput/filenamemw.xml/setting1xmlpage2.xml/setting2xmlpage3.xml/setting3xmlpage4.xml

          in a terminal?

          sankarapandiyanS Offline
          sankarapandiyanS Offline
          sankarapandiyan
          wrote on last edited by
          #9

          @aha_1980
          i am not able to read
          error:Could not open the file for reading
          Could not open the file for reading
          Could not open the file for reading
          Could not open the file for reading

          1 Reply Last reply
          0
          • aha_1980A aha_1980

            @sankarapandiyan Then your code should work!

            What is the output of:

            file /home/newuser/Desktop/xmlfileoutput/filenamemw.xml/setting1xmlpage2.xml/setting2xmlpage3.xml/setting3xmlpage4.xml

            in a terminal?

            sankarapandiyanS Offline
            sankarapandiyanS Offline
            sankarapandiyan
            wrote on last edited by
            #10

            @aha_1980
            My problem is that i put four file names into one path
            what to do ?
            i think this is the problem

            aha_1980A 1 Reply Last reply
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            • sankarapandiyanS sankarapandiyan

              @aha_1980
              My problem is that i put four file names into one path
              what to do ?
              i think this is the problem

              aha_1980A Offline
              aha_1980A Offline
              aha_1980
              Lifetime Qt Champion
              wrote on last edited by
              #11

              @sankarapandiyan

              You should first open only /home/newuser/Desktop/xmlfileoutput/filenamemw.xml and read it.

              After that finished, you can read the second file and so on.

              Ok?

              Qt has to stay free or it will die.

              sankarapandiyanS 1 Reply Last reply
              1
              • aha_1980A aha_1980

                @sankarapandiyan

                You should first open only /home/newuser/Desktop/xmlfileoutput/filenamemw.xml and read it.

                After that finished, you can read the second file and so on.

                Ok?

                sankarapandiyanS Offline
                sankarapandiyanS Offline
                sankarapandiyan
                wrote on last edited by sankarapandiyan
                #12

                @aha_1980
                QFile file("/home/newuser/Desktop/xmlfileoutput/filenamemw.xml");
                yes now it opens , But unable to read it
                this the output,
                Starting /home/newuser/Desktop/designtest-build-desktop-Qt_4_8_1_in_PATH__System__Release/designtest...
                opened
                opened
                opened
                opened

                QFile file("/home/newuser/Desktop/xmlfileoutput/filenamemw.xml/setting1xmlpage2.xml");

                if i add the second file and run the code ,the output is like this ,
                Starting /home/newuser/Desktop/designtest-build-desktop-Qt_4_8_1_in_PATH__System__Release/designtest...
                Could not open the file for reading
                Could not open the file for reading
                Could not open the file for reading
                Could not open the file for reading

                1 Reply Last reply
                0
                • L Offline
                  L Offline
                  Leon_2001
                  wrote on last edited by
                  #13

                  This is not how QFile works...

                  QFile expects from you to give a path to the constructor.
                  Therefore if you have 4 files you need 4 QFiles (Or 1 file and change the path with the "setFileName" method of QFile after finished one reading).

                  QFile file1("/home/newuser/Desktop/xmlfileoutput/filenamemw.xml");
                  QFile file2("/home/newuser/Desktop/xmlfileoutput/setting1xmlpage2.xml");
                  (not sure if this is the correct path as I can't look into your file Manager)
                  ...
                  or simply after you have finished reading file1
                  file1.setFileName("/home/newuser/Desktop/xmlfileoutput/setting1xmlpage2.xml");

                  I suppose, you function header should look therefore more like this:

                  void copyFiles(const QStringList& sources, const QString& destination);

                  You first open your file with destionation as the path for writing, as this is the file where you copy the 4 other xml files in.

                  Next you loop over the QStringLists with a for each loop. In it you open a file with the path you get form QStringList. Read it line for line and write the content line for line in the destination file.

                  You call could look like this

                  int main() {
                    QStringList pathes = {"/home/newuser/Desktop/xmlfileoutput/filenamemw.xml", "/home/newuser/Desktop/xmlfileoutput/setting1xmlpage2.xml"};
                   
                    copyFiles(pathes, "/path/to/your/destination/file");
                  }
                  

                  If you get something like "could not open" first test if you give the right path to the file by using the command aha_1980 recommended you:
                  $ file /path/to/your/file

                  1 Reply Last reply
                  4
                  • L Offline
                    L Offline
                    Leon_2001
                    wrote on last edited by
                    #14

                    By the way, depending on your file manager, you usually can click right on the file and there will be something in the menu like "properties" if you click on it, you will see the path to the file or to the folder the file is in it.
                    In last case you need to add /yourFileName to get the complete path.

                    1 Reply Last reply
                    3
                    • sankarapandiyanS Offline
                      sankarapandiyanS Offline
                      sankarapandiyan
                      wrote on last edited by sankarapandiyan
                      #15

                      @Leon_2001 ok i wil try Thanks a lot

                      1 Reply Last reply
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