// TortoiseSVN - a Windows shell extension for easy version control

// Copyright (C) 2010, 2021 - TortoiseSVN

// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#pragma once

class CBstrSafeVector
{
public:
    CBstrSafeVector()
        : controlled(0)
    {
    }
    CBstrSafeVector(ULONG count);
    ~CBstrSafeVector() { release(); }

    const SAFEARRAY* operator->() const { return controlled; }
                     operator SAFEARRAY*() const { return controlled; }
                     operator const SAFEARRAY*() const { return controlled; }

    SAFEARRAY** operator&();

    HRESULT PutElement(LONG index, const CString& value) const;

private:
    SAFEARRAY* controlled;

    void release();
};

inline CBstrSafeVector::CBstrSafeVector(ULONG count)
{
    controlled = SafeArrayCreateVector(VT_BSTR, 0, count);
}

inline SAFEARRAY** CBstrSafeVector::operator&()
{
    release();
    return &controlled;
}

inline HRESULT CBstrSafeVector::PutElement(LONG index, const CString& value) const
{
    ATL::CComBSTR valueBstr;
    valueBstr.Attach(value.AllocSysString());
    return SafeArrayPutElement(controlled, &index, valueBstr);
}

inline void CBstrSafeVector::release()
{
    if (controlled == nullptr)
        return;
    SafeArrayDestroy(controlled);
    controlled = nullptr;
}
