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Host: Add ReadCompressedResourceFile()

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Stenzek 2024-08-25 17:48:12 +10:00
parent 7efacbad36
commit 7fdb4317d8
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2 changed files with 53 additions and 2 deletions
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50
src/core/host.cpp
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@ -1,5 +1,5 @@
// SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
// SPDX-License-Identifier: (GPL-3.0 OR PolyForm-Strict-1.0.0)
#include "host.h"
#include "fullscreen_ui.h"
@ -18,11 +18,15 @@
#include "common/error.h"
#include "common/layered_settings_interface.h"
#include "common/log.h"
#include "common/path.h"
#include "common/string_util.h"
#include "imgui.h"
#include <cstdarg>
#include <limits>
#include <zstd.h>
#include <zstd_errors.h>
Log_SetChannel(Host);
@ -41,6 +45,50 @@ SettingsInterface* Host::GetSettingsInterface()
return &s_layered_settings_interface;
}
std::optional<DynamicHeapArray<u8>> Host::ReadCompressedResourceFile(std::string_view filename, bool allow_override)
{
std::optional<DynamicHeapArray<u8>> ret = Host::ReadResourceFile(filename, allow_override);
if (ret.has_value())
{
const std::string_view extension = Path::GetExtension(filename);
if (StringUtil::EqualNoCase(extension, "zst"))
{
// Need to zstd decompress.
const unsigned long long decompressed_size = ZSTD_getFrameContentSize(ret->data(), ret->size());
if (decompressed_size == ZSTD_CONTENTSIZE_UNKNOWN || decompressed_size == ZSTD_CONTENTSIZE_ERROR ||
decompressed_size >= std::numeric_limits<size_t>::max()) [[unlikely]]
{
ERROR_LOG("Failed to get size of {}.", filename);
ret.reset();
return ret;
}
DEV_LOG("Decompressing resource {}: {} => {} bytes", filename, ret->size(), decompressed_size);
DynamicHeapArray<u8> decompressed_data(decompressed_size);
const size_t result =
ZSTD_decompress(decompressed_data.data(), decompressed_data.size(), ret->data(), ret->size());
if (ZSTD_isError(result)) [[unlikely]]
{
const char* errstr = ZSTD_getErrorString(ZSTD_getErrorCode(result));
ERROR_LOG("ZSTD_decompress() for {} failed: {}", filename, errstr ? errstr : "<unknown>");
ret.reset();
return ret;
}
if (result < decompressed_size) [[unlikely]]
{
ERROR_LOG("ZSTD_decompress() for {} only returned {} of {} bytes.", filename, result, decompressed_size);
ret.reset();
return ret;
}
ret = std::move(decompressed_data);
}
}
return ret;
}
std::string Host::GetBaseStringSettingValue(const char* section, const char* key, const char* default_value /*= ""*/)
{
std::unique_lock lock(s_settings_mutex);

5
src/util/host.h
View file

@ -3,8 +3,8 @@
#pragma once
#include "common/types.h"
#include "common/heap_array.h"
#include "common/types.h"
#include <ctime>
#include <optional>
@ -25,6 +25,9 @@ std::optional<std::string> ReadResourceFileToString(std::string_view filename, b
/// Returns the modified time of a resource.
std::optional<std::time_t> GetResourceFileTimestamp(std::string_view filename, bool allow_override);
/// Reads a potentially-compressed file from the resources directory of the application.
std::optional<DynamicHeapArray<u8>> ReadCompressedResourceFile(std::string_view filename, bool allow_override);
/// Reports a fatal error on the main thread. This does not assume that the main window exists,
/// unlike ReportErrorAsync(), and will exit the application after the popup is closed.
void ReportFatalError(std::string_view title, std::string_view message);