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Add German UI language support and normalize locale codes for LLM output

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Alexander Farber 2025-12-13 15:38:35 +01:00
parent 4d9f25e9fe
commit f07259a7c9
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2 changed files with 139 additions and 10 deletions
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95
packages/cli/src/ui/commands/languageCommand.ts
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@ -75,6 +75,23 @@ function getLlmOutputLanguageRulePath(): string {
);
}
/**
* Normalizes a language input to its full English name.
* If the input is a known locale code (e.g., "ru", "zh"), converts it to the full name.
* Otherwise, returns the input as-is (e.g., "Japanese" stays "Japanese").
*/
function normalizeLanguageName(language: string): string {
const lowered = language.toLowerCase();
// Check if it's a known locale code and convert to full name
const fullName = getLanguageNameFromLocale(lowered);
// If getLanguageNameFromLocale returned a different value, use it
// Otherwise, use the original input (preserves case for unknown languages)
if (fullName !== 'English' || lowered === 'en') {
return fullName;
}
return language;
}
/**
* Initializes the LLM output language rule file on first startup.
* If the file already exists, it is not overwritten (respects user preference).
@ -180,7 +197,9 @@ function generateLlmOutputLanguageRuleFile(
): Promise<MessageActionReturn> {
try {
const filePath = getLlmOutputLanguageRulePath();
const content = generateLlmOutputLanguageRule(language);
// Normalize locale codes (e.g., "ru" -> "Russian") to full language names
const normalizedLanguage = normalizeLanguageName(language);
const content = generateLlmOutputLanguageRule(normalizedLanguage);
// Ensure directory exists
const dir = path.dirname(filePath);
@ -247,7 +266,7 @@ export const languageCommand: SlashCommand = {
: t('LLM output language not set'),
'',
t('Available subcommands:'),
` /language ui [zh-CN|en-US|ru-RU] - ${t('Set UI language')}`,
` /language ui [zh-CN|en-US|ru-RU|de-DE] - ${t('Set UI language')}`,
` /language output <language> - ${t('Set LLM output language')}`,
].join('\n');
@ -263,7 +282,7 @@ export const languageCommand: SlashCommand = {
const subcommand = parts[0].toLowerCase();
if (subcommand === 'ui') {
// Handle /language ui [zh-CN|en-US|ru-RU]
// Handle /language ui [zh-CN|en-US|ru-RU|de-DE]
if (parts.length === 1) {
// Show UI language subcommand help
return {
@ -272,7 +291,7 @@ export const languageCommand: SlashCommand = {
content: [
t('Set UI language'),
'',
t('Usage: /language ui [zh-CN|en-US|ru-RU]'),
t('Usage: /language ui [zh-CN|en-US|ru-RU|de-DE]'),
'',
t('Available options:'),
t(' - zh-CN: Simplified Chinese'),
@ -300,16 +319,23 @@ export const languageCommand: SlashCommand = {
targetLang = 'zh';
} else if (
langArg === 'ru' ||
langArg === 'ru-RU' ||
langArg === 'ru-ru' ||
langArg === 'russian' ||
langArg === 'русский'
) {
targetLang = 'ru';
} else if (
langArg === 'de' ||
langArg === 'de-de' ||
langArg === 'german' ||
langArg === 'deutsch'
) {
targetLang = 'de';
} else {
return {
type: 'message',
messageType: 'error',
content: t('Invalid language. Available: en-US, zh-CN, ru-RU'),
content: t('Invalid language. Available: en-US, zh-CN, ru-RU, de-DE'),
};
}
@ -348,18 +374,26 @@ export const languageCommand: SlashCommand = {
targetLang = 'zh';
} else if (
langArg === 'ru' ||
langArg === 'ru-RU' ||
langArg === 'ru-ru' ||
langArg === 'russian' ||
langArg === 'русский'
) {
targetLang = 'ru';
} else if (
langArg === 'de' ||
langArg === 'de-de' ||
langArg === 'german' ||
langArg === 'deutsch'
) {
targetLang = 'de';
} else {
return {
type: 'message',
messageType: 'error',
content: [
t('Invalid command. Available subcommands:'),
' - /language ui [zh-CN|en-US|ru-RU] - ' + t('Set UI language'),
' - /language ui [zh-CN|en-US|ru-RU|de-DE] - ' +
t('Set UI language'),
' - /language output <language> - ' + t('Set LLM output language'),
].join('\n'),
};
@ -387,11 +421,13 @@ export const languageCommand: SlashCommand = {
content: [
t('Set UI language'),
'',
t('Usage: /language ui [zh-CN|en-US]'),
t('Usage: /language ui [zh-CN|en-US|ru-RU|de-DE]'),
'',
t('Available options:'),
t(' - zh-CN: Simplified Chinese'),
t(' - en-US: English'),
t(' - ru-RU: Russian'),
t(' - de-DE: German'),
'',
t(
'To request additional UI language packs, please open an issue on GitHub.',
@ -412,11 +448,27 @@ export const languageCommand: SlashCommand = {
langArg === 'zh-cn'
) {
targetLang = 'zh';
} else if (
langArg === 'ru' ||
langArg === 'ru-ru' ||
langArg === 'russian' ||
langArg === 'русский'
) {
targetLang = 'ru';
} else if (
langArg === 'de' ||
langArg === 'de-de' ||
langArg === 'german' ||
langArg === 'deutsch'
) {
targetLang = 'de';
} else {
return {
type: 'message',
messageType: 'error',
content: t('Invalid language. Available: en-US, zh-CN'),
content: t(
'Invalid language. Available: en-US, zh-CN, ru-RU, de-DE',
),
};
}
@ -492,6 +544,29 @@ export const languageCommand: SlashCommand = {
return setUiLanguage(context, 'ru');
},
},
{
name: 'de-DE',
altNames: ['de', 'german', 'deutsch'],
get description() {
return t('Set UI language to German (de-DE)');
},
kind: CommandKind.BUILT_IN,
action: async (
context: CommandContext,
args: string,
): Promise<MessageActionReturn> => {
if (args.trim().length > 0) {
return {
type: 'message',
messageType: 'error',
content: t(
'Language subcommands do not accept additional arguments.',
),
};
}
return setUiLanguage(context, 'de');
},
},
],
},
{