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103 lines
3.7 KiB
C++
103 lines
3.7 KiB
C++
#include "manager.hpp"
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#include <set>
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#include <unicode/errorcode.h>
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#include <components/debug/debuglog.hpp>
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#include <components/vfs/manager.hpp>
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namespace l10n
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{
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void Manager::setPreferredLocales(const std::vector<std::string>& langs, bool gmstHasPriority)
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{
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mPreferredLocales.clear();
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if (gmstHasPriority)
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mPreferredLocales.push_back(icu::Locale("gmst"));
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std::set<std::string> langSet;
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for (const auto& lang : langs)
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{
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if (langSet.contains(lang))
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continue;
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langSet.insert(lang);
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mPreferredLocales.push_back(icu::Locale(lang.c_str()));
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}
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if (!gmstHasPriority)
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mPreferredLocales.push_back(icu::Locale("gmst"));
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{
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Log msg(Debug::Info);
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msg << "Preferred locales:";
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for (const icu::Locale& l : mPreferredLocales)
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msg << " " << l.getName();
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}
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for (auto& [key, context] : mCache)
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updateContext(key.first, *context);
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}
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void Manager::readLangData(const std::string& name, MessageBundles& ctx, const icu::Locale& lang)
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{
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std::string path = "l10n/";
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path.append(name);
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path.append("/");
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path.append(lang.getName());
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path.append(".yaml");
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if (!mVFS->exists(path))
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return;
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ctx.load(*mVFS->get(path), lang, path);
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}
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void Manager::updateContext(const std::string& name, MessageBundles& ctx)
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{
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icu::Locale fallbackLocale = ctx.getFallbackLocale();
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ctx.setPreferredLocales(mPreferredLocales);
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int localeCount = 0;
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bool fallbackLocaleInPreferred = false;
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for (const icu::Locale& loc : ctx.getPreferredLocales())
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{
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if (!ctx.isLoaded(loc))
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readLangData(name, ctx, loc);
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if (ctx.isLoaded(loc))
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{
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localeCount++;
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Log(Debug::Verbose) << "Language file \"l10n/" << name << "/" << loc.getName() << ".yaml\" is enabled";
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if (loc == ctx.getFallbackLocale())
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fallbackLocaleInPreferred = true;
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}
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}
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if (!ctx.isLoaded(ctx.getFallbackLocale()))
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readLangData(name, ctx, ctx.getFallbackLocale());
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if (ctx.isLoaded(ctx.getFallbackLocale()) && !fallbackLocaleInPreferred)
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Log(Debug::Verbose) << "Fallback language file \"l10n/" << name << "/" << ctx.getFallbackLocale().getName()
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<< ".yaml\" is enabled";
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if (localeCount == 0)
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{
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Log(Debug::Warning) << "No language files for the preferred languages found in \"l10n/" << name << "\"";
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}
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}
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std::shared_ptr<const MessageBundles> Manager::getContext(
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const std::string& contextName, const std::string& fallbackLocaleName)
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{
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std::pair<std::string, std::string> key(contextName, fallbackLocaleName);
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auto it = mCache.find(key);
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if (it != mCache.end())
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return it->second;
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auto allowedChar = [](char c) {
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return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '_';
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};
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bool valid = !contextName.empty();
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for (char c : contextName)
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valid = valid && allowedChar(c);
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if (!valid)
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throw std::runtime_error(std::string("Invalid l10n context name: ") + contextName);
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icu::Locale fallbackLocale(fallbackLocaleName.c_str());
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std::shared_ptr<MessageBundles> ctx = std::make_shared<MessageBundles>(mPreferredLocales, fallbackLocale);
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ctx->setGmstLoader(mGmstLoader);
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updateContext(contextName, *ctx);
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mCache.emplace(key, ctx);
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return ctx;
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}
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}
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