/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#pragma once
#include <cassert>
#include <string_view>
#include <utility>
#include <prewin.h>
#include <oleauto.h>
#include <postwin.h>
#include <o3tl/char16_t2wchar_t.hxx>
namespace sal::systools
{
// BSTR safe wrapper
class BStr
{
public:
static BSTR newBSTR(std::u16string_view sv)
{
return ::SysAllocStringLen(o3tl::toW(sv.data()), sv.size());
}
BStr() =
default;
BStr(std::u16string_view sv)
: m_Str(newBSTR(sv))
{
}
BStr(BStr&& src) noexcept
: m_Str(src.release())
{
}
~BStr() { ::SysFreeString(m_Str); }
BStr&
operator=(std::u16string_view sv)
{
::SysFreeString(std::exchange(m_Str, newBSTR(sv)));
return *
this;
}
BStr&
operator=(
const BStr& src)
{
if (&src !=
this)
operator=(std::u16string_view(src));
return *
this;
}
BStr&
operator=(BStr&& src) noexcept
{
::SysFreeString(std::exchange(m_Str, src.release()));
return *
this;
}
operator std::u16string_view()
const {
return { o3tl::toU(m_Str), length() }; }
operator BSTR()
const {
return m_Str; }
BSTR*
operator&()
{
assert(!m_Str);
return &m_Str;
}
UINT length()
const {
return ::SysStringLen(m_Str); }
// similar to std::unique_ptr::release
BSTR release() {
return std::exchange(m_Str, nullptr); }
private:
BSTR m_Str = nullptr;
};
}
// sal::systools
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
