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Path/Directory separator inconsistent.

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  • KroMignonK KroMignon

    @SPlatten said in Path/Directory separator inconsistent.:

    It's all just messy and requires thought and effort when it should be handled internally.

    There is no mess here, it is clearly documented:

    • QDir always use '/' as path separator. So path string can the same on every system for which your application is build
    • QDir::separator() gives you the system path separator on which application is running
    • QDir::toNativeSeparators(), will convert the given string to a string using QDir::separator() so it will be acceptable by the system.
    • QDir:cleanPath(), will ensure you path has no redondant separators, and use '/' as separator

    So your code is wrong.
    This could work:

    QString newPath(QDir::cleanPath(path));
    
    if (!newPath.endsWith('/')) {
        newPath += '/';
    }
    
    SPlattenS Offline
    SPlattenS Offline
    SPlatten
    wrote on last edited by
    #14

    @KroMignon , I'm writing an application that uses paths that may be supplied in text files, the application should not rely on what the Qt library uses.

    Kind Regards,
    Sy

    KroMignonK 1 Reply Last reply
    0
    • SPlattenS SPlatten

      @KroMignon , I'm writing an application that uses paths that may be supplied in text files, the application should not rely on what the Qt library uses.

      KroMignonK Offline
      KroMignonK Offline
      KroMignon
      wrote on last edited by KroMignon
      #15

      @SPlatten said in Path/Directory separator inconsistent.:

      I'm writing an application that uses paths that may be supplied in text files, the application should not rely on what the Qt library uses.

      And what is the problem with that?
      Simply use QDir:cleanPath() to ensure your path string is correct.

      It is an old maxim of mine that when you have excluded the impossible, whatever remains, however improbable, must be the truth. (Sherlock Holmes)

      1 Reply Last reply
      1
      • SPlattenS SPlatten

        @J-Hilk , this was the code:

        QChar separator = QDir::separator();
        QString newPath(path);
        
        if (!newPath.endsWith(separator)) {
            newPath += separator;
        }
        

        @JonB, you can't pass QDir::separator() to QDir::toNativeSeparators as there is only one version of this function and it expects a QString not a QChar.

        It's all just messy and requires thought and effort when it should be handled internally.

        JonBJ Offline
        JonBJ Offline
        JonB
        wrote on last edited by
        #16

        @SPlatten said in Path/Directory separator inconsistent.:

        @JonB, you can't pass QDir::separator() to QDir::toNativeSeparators as there is only one version of this function and it expects a QString not a QChar.

        Why do you make this kind of statement without checking?

            QString sep = QDir::toNativeSeparators(QDir::separator());
        
        
        1 Reply Last reply
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        • SPlattenS Offline
          SPlattenS Offline
          SPlatten
          wrote on last edited by
          #17

          I did exactly that, in the version of Qt Creator I'm using there is only one function.

          Kind Regards,
          Sy

          JonBJ 1 Reply Last reply
          0
          • SPlattenS SPlatten

            I did exactly that, in the version of Qt Creator I'm using there is only one function.

            JonBJ Offline
            JonBJ Offline
            JonB
            wrote on last edited by JonB
            #18

            @SPlatten
            No, you did not try the code! There is just the one function in my version of Qt too! And it accepts the same parameter type as yours.... static QString toNativeSeparators(const QString &pathName);, https://doc.qt.io/qt-5/qdir.html#toNativeSeparators.

            SPlattenS 1 Reply Last reply
            0
            • JonBJ JonB

              @SPlatten
              No, you did not try the code! There is just the one function in my version of Qt too! And it accepts the same parameter type as yours.... static QString toNativeSeparators(const QString &pathName);, https://doc.qt.io/qt-5/qdir.html#toNativeSeparators.

              SPlattenS Offline
              SPlattenS Offline
              SPlatten
              wrote on last edited by
              #19

              @JonB , Qt Creator 4.2.1, Based on Qt 5.8.0 (MSCV 2015, 32 bit), thats the version on the laptop I'm using for this project and I can sure you that the version only excepts a const QString&, there is no alternative in this IDE.

              Kind Regards,
              Sy

              JonBJ 1 Reply Last reply
              0
              • SPlattenS SPlatten

                @JonB , Qt Creator 4.2.1, Based on Qt 5.8.0 (MSCV 2015, 32 bit), thats the version on the laptop I'm using for this project and I can sure you that the version only excepts a const QString&, there is no alternative in this IDE.

                JonBJ Offline
                JonBJ Offline
                JonB
                wrote on last edited by JonB
                #20

                @SPlatten
                It has nothing to do with the IDE, at all.

                I can sure you

                It does have to do with the behaviour of C++, and QString....

                Would you be kind enough to copy & paste my line into your version, and tell me the outcome, please? Show me the error message you get at compile-time, thank you.

                1 Reply Last reply
                0
                • SPlattenS Offline
                  SPlattenS Offline
                  SPlatten
                  wrote on last edited by
                  #21

                  @JonB , QDir::separator does not return a QString it returns a QChar.

                  Kind Regards,
                  Sy

                  JonBJ 1 Reply Last reply
                  -1
                  • SPlattenS SPlatten

                    @JonB , QDir::separator does not return a QString it returns a QChar.

                    JonBJ Offline
                    JonBJ Offline
                    JonB
                    wrote on last edited by
                    #22

                    @SPlatten
                    I KNOW THIS.

                    HAVE YOU ACTUALLY TRIED IT, DESPITE WHAT YOU SAY??????????

                    SPlattenS 1 Reply Last reply
                    0
                    • JonBJ JonB

                      @SPlatten
                      I KNOW THIS.

                      HAVE YOU ACTUALLY TRIED IT, DESPITE WHAT YOU SAY??????????

                      SPlattenS Offline
                      SPlattenS Offline
                      SPlatten
                      wrote on last edited by
                      #23

                      @JonB How can I try it when it won't compile without errors? Stop shouting and calm down!

                      Kind Regards,
                      Sy

                      JonBJ jsulmJ 2 Replies Last reply
                      -1
                      • SPlattenS SPlatten

                        @JonB How can I try it when it won't compile without errors? Stop shouting and calm down!

                        JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by
                        #24

                        @SPlatten
                        Could you please put it into your code, and show me the compile-time error message you get, as requested? I should be most obliged....

                        SPlattenS 1 Reply Last reply
                        0
                        • SPlattenS SPlatten

                          @JonB How can I try it when it won't compile without errors? Stop shouting and calm down!

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #25

                          @SPlatten Sorry, but I have to support @JonB here: that line of code compiles just fine.
                          "it returns a QChar" - which converts just fine to a QString (https://doc.qt.io/qt-5/qstring.html#QString-2).

                          https://forum.qt.io/topic/113070/qt-code-of-conduct

                          1 Reply Last reply
                          1
                          • JonBJ JonB

                            @SPlatten
                            Could you please put it into your code, and show me the compile-time error message you get, as requested? I should be most obliged....

                            SPlattenS Offline
                            SPlattenS Offline
                            SPlatten
                            wrote on last edited by
                            #26

                            @JonB , sorry, I just don't have time to back tract now, apologies if I was wrong.

                            Kind Regards,
                            Sy

                            1 Reply Last reply
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