I18n tooling and Kotlin sources

[aurantiaco-sucus]

I can't find much information on the Internet, but it seems that Qt I18n associates translations with classes. The problem is that lupdate has no support for Kotlin (.kt) files whatsoever. While it can generate ts files with them, it (sees them as C++) and seems really confused by Kotlin syntax and the context is not right everywhere except for the first class I defined and QObject.tr calls.

The solution I can come up with is not pretty: Wrap QObject.tr into tr in Kotlin and somehow generate stubs that simply concentrate every tr call into a function full of QObject.tr calls for lupdate to parse, essentially erasing context information.

Are there a better way to achieve this, or I'm better off using a Java/Kotlin I18n framework? I like using tr and Linguist really :(

[omix]

I am aware of this problem. I am happy that lupdate at least reads Java files. I believe the only way automizing this is by outsourcing UI test into a Java class and use this for analyzing with lupdate. However, lupdate also understands QApplication.translate("context", "UI text"). You could use this instead.
Nevertheless, what is the output of lupdate when you read kotlin? Does it run into error or does it at least extract the tr's but with wrong class ids?

[aurantiaco-sucus]

Thanks for the comment.

Left: source code; Right: lupdate (managed by my Python script)

Yeah, QApplication.translate works, glad to know that.

Maybe I would write a crude lupdate equivalent for Kotlin files.

P.S. Sorry for the obfuscated code, that's just my way to add some declarative-ness to Jambi.

[omix]

I believe lupdate does not know what to identify as context of the tr expression. translate(context, msg) fixes this. lupdate does not need QApplication. you can simply write translate and add a static import.

[omix]

I found out, it is very easy to trick lupdate:

project.pro

HEADERS = project.h
TRANSLATIONS = translations.ts

project.h

class MainKt{
    Q_OBJECT
#include "Main.kt"
};

namespace my::test{

class KObject{
    Q_OBJECT
#include "my/test/KObject.kt"
};

}

Main.kt

fun main(args: Array<String>) {
    tr("Main: Hello World!")
}

my/test/KObject.kt

package my.test
class KObject() : QObject() {
    fun test() {
        tr("KObject: Hello World!")
    }
}

call: lupdate -pro project.pro

lupdate seems to only look for class declarations and then collects all found tr's. You only need to replace the C++ namespace separator :: by Java package separator .. I dod not find a way to tell lupdate to do it correctly.