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4390370a19
These functions allow to construct a string view from an input buffer, avoiding the copy done by the non string view counterparts. However, callers must be cognizant of the viewed buffer's lifetime to avoid a use-after-free.
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
// Copyright 2021 yuzu Emulator Project
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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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#pragma once
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#include <concepts>
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#include <filesystem>
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#include <span>
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#include <string>
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#include <string_view>
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#include "common/common_types.h"
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namespace Common::FS {
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template <typename T>
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concept IsChar = std::same_as<T, char>;
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/**
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* Converts a UTF-8 encoded std::string or std::string_view to a std::u8string.
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*
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* @param utf8_string UTF-8 encoded string
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*
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* @returns UTF-8 encoded std::u8string.
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*/
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[[nodiscard]] std::u8string ToU8String(std::string_view utf8_string);
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/**
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* Converts a buffer of bytes to a UTF8-encoded std::u8string.
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* This converts from the start of the buffer until the first encountered null-terminator.
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* If no null-terminator is found, this converts the entire buffer instead.
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*
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* @param buffer Buffer of bytes
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*
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* @returns UTF-8 encoded std::u8string.
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*/
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[[nodiscard]] std::u8string BufferToU8String(std::span<const u8> buffer);
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/**
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* Same as BufferToU8String, but returns a string view of the buffer.
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*
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* @param buffer Buffer of bytes
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*
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* @returns UTF-8 encoded std::u8string_view.
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*/
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[[nodiscard]] std::u8string_view BufferToU8StringView(std::span<const u8> buffer);
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/**
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* Converts a std::u8string or std::u8string_view to a UTF-8 encoded std::string.
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*
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* @param u8_string UTF-8 encoded u8string
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*
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* @returns UTF-8 encoded std::string.
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*/
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[[nodiscard]] std::string ToUTF8String(std::u8string_view u8_string);
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/**
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* Converts a buffer of bytes to a UTF8-encoded std::string.
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* This converts from the start of the buffer until the first encountered null-terminator.
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* If no null-terminator is found, this converts the entire buffer instead.
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*
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* @param buffer Buffer of bytes
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*
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* @returns UTF-8 encoded std::string.
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*/
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[[nodiscard]] std::string BufferToUTF8String(std::span<const u8> buffer);
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/**
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* Same as BufferToUTF8String, but returns a string view of the buffer.
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*
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* @param buffer Buffer of bytes
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*
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* @returns UTF-8 encoded std::string_view.
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*/
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[[nodiscard]] std::string_view BufferToUTF8StringView(std::span<const u8> buffer);
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/**
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* Converts a filesystem path to a UTF-8 encoded std::string.
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*
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* @param path Filesystem path
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*
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* @returns UTF-8 encoded std::string.
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*/
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[[nodiscard]] std::string PathToUTF8String(const std::filesystem::path& path);
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} // namespace Common::FS
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