Added support for .strings and .stringsdict files

[fhasse95]

This PR improves support for localized strings by also copying the *.strings and *.stringsdict files to the resources.

This is particularly useful for projects that haven’t yet adopted to the *.xcstrings format. For instance, I still prefer using the *.lproj structure for open-source repositories as they are much easier to review in Git diffs and allow contributors to assist with translations without needing specialized tools or dealing with the complex JSON structure of *.xcstrings.

During the adjustment, the following question also came into my mind:
As I’ve noticed, the plural variants from the *.xcstrings files are already converted internally into *.stringsdict files. However, according to the documentation, these are currently not supported. Is this still planned, or is it technically not possible? I’ve already looked into the Skip Foundation to see how the mapping of localized strings currently works, but I haven’t found a solution on how to support it yet. But maybe I just don't have the necessary background knowledge.

Looking forward to your response! 😊

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[marcprux]

We should have already been copying raw Localized.strings files when they are found. At least, we used to before we updated to handle the .xcstrings processing (in 3a2887c and 43a9b87), but I admit it has not been tested in a while.

As you suspect, though, we don't yet have any support for handing pluralizations, so we don't actually do anything with the generated .stringsdict files. We handle all the localization manually at runtime (in skip-foundation's Bundle), so we'd need to implement support for pluralization, which is unfortunately quite complex. We might be able to leverage android.icu.text.PluralRules to help with this.

It would be a fantastic feature to have, but I've never had enough time to work on it. If you're interested in diving deeper, it would make a great contribution!

[fhasse95]

Hi @marcprux,

Thanks a lot for the quick feedback! You’re absolutely right. It turns out I had an error in my own package configuration where the localized strings were located. After switching back from my local skipstone plugin to the official 1.7.7 release, I can confirm that the *.strings files are indeed being copied correctly. Therefore I'll close this PR.

Regarding the pluralization support: Thank you so much for the detailed context! It sounds indeed quite challenging but I’ll definitely dive deeper into this and look into how android.icu.text.PluralRules could be used to achieve this once I find the time. For now, at least, you’ve given me some good starting points to work with.

Best regards,
Fabian

[marcprux]

Closed in favor of skiptools/skip-foundation#102, I presume.