зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.6 KiB
C++
60 строки
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#include "WindowsUnicode.h"
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#include <windows.h>
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// For UNICODE_STRING
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#include <winternl.h>
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#include <string.h>
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namespace mozilla {
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namespace glue {
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mozilla::UniquePtr<char[]> WideToUTF8(const wchar_t* aStr,
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const size_t aStrLenExclNul) {
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int numConv = ::WideCharToMultiByte(CP_UTF8, 0, aStr, aStrLenExclNul, nullptr,
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0, nullptr, nullptr);
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if (!numConv) {
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return nullptr;
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}
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// Include room for the null terminator by adding one
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auto buf = mozilla::MakeUnique<char[]>(numConv + 1);
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numConv = ::WideCharToMultiByte(CP_UTF8, 0, aStr, aStrLenExclNul, buf.get(),
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numConv, nullptr, nullptr);
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if (!numConv) {
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return nullptr;
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}
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// Add null termination. numConv does not include the terminator, so we don't
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// subtract 1 when indexing into buf.
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buf[numConv] = 0;
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return buf;
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}
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mozilla::UniquePtr<char[]> WideToUTF8(const wchar_t* aStr) {
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return WideToUTF8(aStr, wcslen(aStr));
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}
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mozilla::UniquePtr<char[]> WideToUTF8(const std::wstring& aStr) {
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return WideToUTF8(aStr.data(), aStr.length());
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}
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mozilla::UniquePtr<char[]> WideToUTF8(PCUNICODE_STRING aStr) {
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if (!aStr) {
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return nullptr;
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}
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return WideToUTF8(aStr->Buffer, aStr->Length / sizeof(WCHAR));
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}
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} // namespace glue
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} // namespace mozilla
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