fix: translation won't load if locale code isn't 100% matched

[BLumia]

修复地区代码不完全匹配时,翻译不会被加载的问题.

Summary by Sourcery

Use QTranslator::load to load plugin translations with locale-based lookup and fallback instead of requiring exact locale code match

Bug Fixes:

• Load translations via QTranslator::load using system locale and translation directory to support partial locale matches
• Improve log messages to report translation file path and locale details on load failure

[deepin-ci-robot]

deepin pr auto review

关键摘要:

• 代码中使用了QLocale::system().name()，但在新代码中使用了QLocale::system().uiLanguages()，需要确认这是否符合预期。
• 新代码中直接使用了QLocale::system()，而没有检查是否为空，可能会导致潜在的空指针异常。
• 新代码中使用了QLocale::system().uiLanguages()，这是一个数组，可能需要进一步处理以适应单个语言环境。
• 新代码中使用了QLatin1String("_")，这可能会导致与本地化文件命名不一致的问题，需要确认是否正确。

是否建议立即修改:

• 是

[sourcery-ai]

Reviewer's Guide

Refactors translation loading in DAppletLoaderPrivate::loadTranslation to use QTranslator::load with QLocale overload for flexible locale matching, replacing manual file path checks and enhancing logging.

Sequence Diagram for Updated Translation Loading in DAppletLoaderPrivate

sequenceDiagram
    participant DLP as DAppletLoaderPrivate
    participant QL as QLocale
    participant QT as QTranslator
    participant APP as qApp

    DLP->>QT: new QTranslator(qApp)
    DLP->>QL: system()
    QL-->>DLP: systemLocale
    DLP->>QT: load(systemLocale, pluginId, "_", pluginTranslationDir)
    alt Load Successful
        QT-->>DLP: true
        DLP->>DLP: Store translator in m_pluginTranslators
        DLP->>APP: installTranslator(translator)
        DLP->>DLP: Log success (using translator.filePath())
    else Load Failed
        QT-->>DLP: false
        DLP->>DLP: Log failure (with QLocale::system().uiLanguages())
        DLP->>QT: deleteLater()
    end

Loading

Class Diagram: DAppletLoaderPrivate and Updated Translation Handling

classDiagram
    class DAppletLoaderPrivate {
        -m_pluginTranslators: QMap<QString, QTranslator*>
        +loadTranslation(const DPluginMetaData &pluginData): void
    }
    class QTranslator {
        +load(const QLocale &locale, const QString &filename, const QString &prefix, const QString &directory, const QString &suffix): bool
        +filePath(): const QString &
        +deleteLater(): void
    }
    class QLocale {
        +system(): QLocale
        +uiLanguages(): QStringList
    }
    class DPluginMetaData {
        +pluginDir(): QString
        +pluginId(): QString
    }
    class qApp {
      +installTranslator(QTranslator*): void
    }

    DAppletLoaderPrivate "1" o-- "*" QTranslator : stores
    DAppletLoaderPrivate ..> QTranslator : uses
    DAppletLoaderPrivate ..> QLocale : uses
    DAppletLoaderPrivate ..> DPluginMetaData : uses
    DAppletLoaderPrivate ..> qApp : uses

Loading

File-Level Changes

Change	Details	Files
Refactored translation loading to utilize QTranslator::load overload with locale instead of manual file path checks	Replaced manual building and existence check of .qm file path Switched to translator->load(QLocale::system(), pluginId, '_', translationDir) Updated success log to use translator->filePath() Enhanced failure log to include translation directory, plugin id, and system locales	shell/appletloader.cpp

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[sourcery-ai]

Hey @BLumia - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[deepin-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: BLumia, robertkill

The full list of commands accepted by this bot can be found here.

Details

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• debian/deepin/OWNERS

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