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Translations

New feature in Czkawka 4.0 is ability to translate interface of GTK app.

App use Fluent localization system - https://projectfluent.org/

Main/Default language is English, but also Polish is officially supported.

How to translate Czkawka?

Base translatable strings are placed under i18n/en/czkawka_gui.ftl file.
czkawka_core.ftl is just a symlink which point to file from above(I had problems with splitting string into two separate crates)

Since such strings are heavily integrated into build system, so to check status of translation it is required to recompile Czkawka.

czkawka_gui.ftl file contains lines in this format:
id_of_message = translated_string
e.g.

upper_manual_add_included_button_tooltip = Allows to add directory name to search by hand

to create new folder with translations, it is required to create copy of i18n/en folder and give it name from ISO 639-1 code standard - e.g. pl, en, ru, fr etc.

Next only translated strings needs to be changed

Testing translation

Replacing en folder

The simplest method is to remove en folder and replace it with needed one.
Next Czkawka needs to be compiled and run.

Adding new translation

Recommended way to test translation, is to add it directly to Czkawka source code.

After creating proper and well named folder and translating string inside it, to be able to be able to choose this language file it is required to modify czkawka_gui/src/language_functions.rs file.

pub const LANGUAGES_ALL: [Language; 2] = [
    Language {
        combo_box_text: "English (en)",
        short_text: "en",
    },
    Language {
        combo_box_text: "Polski (pl)",
        short_text: "pl",
    },
];

The only thing which is required to change is LANGUAGES_ALL constant.

Number of items must be changed [Language; 2] -> [Language; 3].

Next new record must be added to array.
combo_box_text must contains translated language name(so Polski is used instead Polish), to help find people to find their native(or not) language.
short_text is ISO 639-1 code which need to match with county code and name of folder inside i18n.

    Language {
        combo_box_text: "Polski (pl)",
        short_text: "pl",
    },

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