Merge pull request #2463 from lioncash/set
service/set: Correct and simplify behavior related to copying language codes
This commit is contained in:
		@@ -2,16 +2,15 @@
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <chrono>
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#include "common/logging/log.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/client_port.h"
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#include "core/hle/kernel/client_session.h"
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#include "core/hle/service/set/set.h"
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#include "core/settings.h"
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namespace Service::Set {
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namespace {
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constexpr std::array<LanguageCode, 17> available_language_codes = {{
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    LanguageCode::JA,
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    LanguageCode::EN_US,
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@@ -32,41 +31,35 @@ constexpr std::array<LanguageCode, 17> available_language_codes = {{
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    LanguageCode::ZH_HANT,
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}};
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constexpr std::size_t pre4_0_0_max_entries = 0xF;
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constexpr std::size_t post4_0_0_max_entries = 0x40;
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constexpr std::size_t pre4_0_0_max_entries = 15;
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constexpr std::size_t post4_0_0_max_entries = 17;
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constexpr ResultCode ERR_INVALID_LANGUAGE{ErrorModule::Settings, 625};
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void PushResponseLanguageCode(Kernel::HLERequestContext& ctx, std::size_t num_language_codes) {
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    IPC::ResponseBuilder rb{ctx, 3};
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    rb.Push(RESULT_SUCCESS);
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    rb.Push(static_cast<u32>(num_language_codes));
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}
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void GetAvailableLanguageCodesImpl(Kernel::HLERequestContext& ctx, std::size_t max_size) {
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    const std::size_t requested_amount = ctx.GetWriteBufferSize() / sizeof(LanguageCode);
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    const std::size_t copy_amount = std::min(requested_amount, max_size);
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    const std::size_t copy_size = copy_amount * sizeof(LanguageCode);
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    ctx.WriteBuffer(available_language_codes.data(), copy_size);
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    PushResponseLanguageCode(ctx, copy_amount);
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}
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} // Anonymous namespace
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LanguageCode GetLanguageCodeFromIndex(std::size_t index) {
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    return available_language_codes.at(index);
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}
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template <std::size_t size>
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static std::array<LanguageCode, size> MakeLanguageCodeSubset() {
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    std::array<LanguageCode, size> arr;
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    std::copy_n(available_language_codes.begin(), size, arr.begin());
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    return arr;
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}
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static void PushResponseLanguageCode(Kernel::HLERequestContext& ctx, std::size_t max_size) {
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    IPC::ResponseBuilder rb{ctx, 3};
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    rb.Push(RESULT_SUCCESS);
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    if (available_language_codes.size() > max_size) {
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        rb.Push(static_cast<u32>(max_size));
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    } else {
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        rb.Push(static_cast<u32>(available_language_codes.size()));
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    }
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}
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void SET::GetAvailableLanguageCodes(Kernel::HLERequestContext& ctx) {
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    LOG_DEBUG(Service_SET, "called");
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    if (available_language_codes.size() > pre4_0_0_max_entries) {
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        ctx.WriteBuffer(MakeLanguageCodeSubset<pre4_0_0_max_entries>());
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    } else {
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        ctx.WriteBuffer(available_language_codes);
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    }
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    PushResponseLanguageCode(ctx, pre4_0_0_max_entries);
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    GetAvailableLanguageCodesImpl(ctx, pre4_0_0_max_entries);
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}
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void SET::MakeLanguageCode(Kernel::HLERequestContext& ctx) {
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@@ -87,12 +80,7 @@ void SET::MakeLanguageCode(Kernel::HLERequestContext& ctx) {
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void SET::GetAvailableLanguageCodes2(Kernel::HLERequestContext& ctx) {
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    LOG_DEBUG(Service_SET, "called");
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    if (available_language_codes.size() > post4_0_0_max_entries) {
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        ctx.WriteBuffer(MakeLanguageCodeSubset<post4_0_0_max_entries>());
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    } else {
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        ctx.WriteBuffer(available_language_codes);
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    }
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    PushResponseLanguageCode(ctx, post4_0_0_max_entries);
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    GetAvailableLanguageCodesImpl(ctx, post4_0_0_max_entries);
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}
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void SET::GetAvailableLanguageCodeCount(Kernel::HLERequestContext& ctx) {
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@@ -102,9 +90,9 @@ void SET::GetAvailableLanguageCodeCount(Kernel::HLERequestContext& ctx) {
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}
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void SET::GetAvailableLanguageCodeCount2(Kernel::HLERequestContext& ctx) {
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    PushResponseLanguageCode(ctx, post4_0_0_max_entries);
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    LOG_DEBUG(Service_SET, "called");
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    PushResponseLanguageCode(ctx, post4_0_0_max_entries);
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}
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void SET::GetLanguageCode(Kernel::HLERequestContext& ctx) {
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