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