utf8.hpp

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// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "winapi-utf8" project.
// For details, see https://github.com/egor-tensin/winapi-utf8.
// Distributed under the MIT License.
 
#pragma once
 
#include <cstddef>
#include <memory>
#include <string>
#include <vector>
 
namespace winapi {
 
/* sizeof(wchar_t) == 4 on Linux, we don't care about that. */
static_assert(sizeof(wchar_t) == 2, "This is Windows, right?");
 
std::wstring widen(const std::string&);
#ifdef __cpp_lib_char8_t
std::wstring widen(const std::u8string&);
#endif
 
std::wstring widen(const void* src, std::size_t nb);
 
template <typename T, typename Alloc = std::allocator<T>>
std::wstring widen(const std::vector<T, Alloc>& src) {
    return widen(src.data(), src.size() * sizeof(T));
}
 
std::string narrow(const std::wstring&);
 
std::string narrow(const std::u16string&);
 
std::string narrow(const void* src, std::size_t nb);
 
template <typename T, typename Alloc = std::allocator<T>>
std::string narrow(const std::vector<T, Alloc>& src) {
    return narrow(src.data(), src.size() * sizeof(T));
}
 
} // namespace winapi