QT_TR_NOOP gives "Cannot be called without context"

mrjj

Hi
Trying to make it translate/extract non UI texts. ( plain c++ so to speak)

The docs says (http://doc.qt.io/qt-5/i18n-source-translation.html)

"If you need to have translatable text completely outside a function, there are two macros to help: QT_TR_NOOP() and QT_TRANSLATE_NOOP(). They merely mark the text for extraction by the lupdate tool. "

( in mainwindow.cpp )
(ignore the static. was just test)

static std::string texts[] = {
{std::string(QT_TR_NOOP("text 1"))}, //: ID must be last
{std::string(QT_TR_NOOP("text 2"))},//= <666>
{std::string(QT_TR_NOOP("text 3"))}
};

So it all sounds good but , running lupdate gives
tr() cannot be called without context

So doc is wrong ?
It MUST be in a function as Docs shows ( and dont mention)

Or why is it not extracting the texts and create the .ts file?

Eeli K

@mrjj Are the strings inside a class?

mrjj

@Eeli-K
No, they are in global scope

Seems to like it if i say
static std::string texts[] = {
{std::string(QT_TRANSLATE_NOOP("global","text 1"))}, //: ID must be last
{std::string(QT_TRANSLATE_NOOP("global","text 2"))},//= <666>
{std::string(QT_TRANSLATE_NOOP("global","text 3"))}
};

but still no ts file :)

Eeli K

@mrjj So maybe they have to be inside a class which becomes a "context"? A QObject?

mrjj

@Eeli-K
Yes it seems it wants a context.
So even docs sounds like you can use QT_TR_NOOP, for global scope you seems to need a context too.

I can get a ts file with QT_TRANSLATE_NOOP
so I'm going to go with that and a custom macro for the
few globals text we must have.

So they don't as such need a class, but a context must be defined it seems.

Maybe I just didn't reads docs good enough :)

Thanks for your input.

Eeli K

@mrjj I just looked into http://doc.qt.io/qt-5/i18n-source-translation.html and it really sounds like you can use it as you did, even with an example:

"The macros expand to just the text (without the context).

Example of QT_TR_NOOP():

QString FriendlyConversation::greeting(int type)
{
    static const char *greeting_strings[] = {
        QT_TR_NOOP("Hello"),
        QT_TR_NOOP("Goodbye")
    };
    return tr(greeting_strings[type]);
}

Example of QT_TRANSLATE_NOOP():

static const char *greeting_strings[] = {
    QT_TRANSLATE_NOOP("FriendlyConversation", "Hello"),
    QT_TRANSLATE_NOOP("FriendlyConversation", "Goodbye")
};

QString FriendlyConversation::greeting(int type)
{
    return tr(greeting_strings[type]);
}

QString global_greeting(int type)
{
    return QCoreApplication::translate("FriendlyConversation",
                                       greeting_strings[type]);
}

"

I assume you have the file in your .pro file, as stated in http://doc.qt.io/qt-5/linguist-programmers.html?