Avoid dealing with QString::normalized when converting to and from std::string

[J0Nes]

Hey,

I am struggling with a Third Party dependency that heavily relies on std::filesystem to do its thing.
When working with Qt 5.15.2 I always have to normalize my QStrings before passing them to the library. Apparently Qt uses a different default unicode normalization which is quite annoying.
Without normalization, Qt and the library detects some unicode characters quite different (e.g. the German character ä) making string comparison fail.

So what I always have to do:

QString foo(QString string) {
    std::string stdString = string.normalized(QString::NormalizationForm_KD).toStdString();
    std::string resultingString = _library->bar(stdString);
    return QString::fromStdString(resultingString).normalized(QString::NormalizationForm_KC);
}

Is there a way to tell Qt to always normalize strings in a certain way?
Thanks a lot!

[Pl45m4]

@J0Nes said in Avoid dealing with QString::normalized when converting to and from std::string:

Is there a way to tell Qt to always normalize strings in a certain way?

Have a look yourself

• https://doc.qt.io/qt-5/qstring.html#normalized
• https://doc.qt.io/qt-5/qstring.html#NormalizationForm-enum
• https://doc.qt.io/qt-5/qchar.html#UnicodeVersion-enum

[J0Nes]

@Pl45m4

sure, that's what I am doing in my quoted code - but I'd love tell Qt to always apply this normalization

[Pl45m4]

@J0Nes

Unfortunately you can't (without modifying the Qt source). You have to work with the given normalization forms.

[J0Nes]

ok, too bad. Thanks for your help