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Add default plural rules

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This makes the PO loader correctly handle the situation where the optional
`Plural-Forms` header field does not exist.

The `Translation` class and its subclasses always have access to valid plural
rules via `_get_plural_rules()`. Plural rules are prioritized:

1. `Translation.plural_rules_override`
2. `TranslationServer.get_plural_rules(locale)`
3. The English plural rules: `nplurals=2; plurals=(n != 1)`

Co-Authored-By: Pāvels Nadtočajevs <7645683+bruvzg@users.noreply.github.com>
This commit is contained in:
Haoyu Qiu 2025-07-21 17:59:14 +08:00
parent ebb96e2303
commit e882e42e1b
11 changed files with 202 additions and 61 deletions
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4
core/io/translation_loader_po.cpp
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@ -112,7 +112,7 @@ Ref<Resource> TranslationLoaderPO::load_translation(Ref<FileAccess> f, Error *r_
int p_start = config.find("Plural-Forms");
if (p_start != -1) {
int p_end = config.find_char('\n', p_start);
translation->set_plural_rule(config.substr(p_start, p_end - p_start));
translation->set_plural_rules_override(config.substr(p_start, p_end - p_start));
}
} else {
uint32_t str_start = 0;
@ -228,7 +228,7 @@ Ref<Resource> TranslationLoaderPO::load_translation(Ref<FileAccess> f, Error *r_
int p_start = config.find("Plural-Forms");
if (p_start != -1) {
int p_end = config.find_char('\n', p_start);
translation->set_plural_rule(config.substr(p_start, p_end - p_start));
translation->set_plural_rules_override(config.substr(p_start, p_end - p_start));
plural_forms = translation->get_plural_forms();
}
}