tz_content_manager: Detect system time zone
Uses C++20 tzdb to determine the system timezone. The switch uses the 597 posix time zones, so this needs tests if the system time zone isn't posix-compliant.
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@ -1,6 +1,7 @@
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// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <chrono>
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#include <sstream>
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#include "common/logging/log.h"
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#include "core/file_sys/registered_cache.h"
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#include "core/file_sys/romfs.h"
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#include "core/file_sys/system_archive/system_archive.h"
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#include "core/file_sys/vfs.h"
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#include "core/file_sys/vfs_types.h"
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#include "core/hle/result.h"
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#include "core/hle/service/filesystem/filesystem.h"
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#include "core/hle/service/time/errors.h"
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#include "core/hle/service/time/time_manager.h"
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#include "core/hle/service/time/time_zone_content_manager.h"
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@ -73,7 +78,12 @@ TimeZoneContentManager::TimeZoneContentManager(Core::System& system_)
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void TimeZoneContentManager::Initialize(TimeManager& time_manager) {
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std::string location_name;
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const auto timezone_setting = Settings::GetTimeZoneString();
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if (timezone_setting == "auto" || timezone_setting == "default") {
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if (timezone_setting == "auto") {
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const struct std::chrono::tzdb& time_zone_data = std::chrono::get_tzdb();
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const std::chrono::time_zone* current_zone = time_zone_data.current_zone();
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std::string_view current_zone_name = current_zone->name();
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location_name = current_zone_name;
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} else if (timezone_setting == "default") {
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location_name = Common::TimeZone::GetDefaultTimeZone();
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} else {
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location_name = timezone_setting;
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