    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * 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 .
     */

    #include <config_folders.h>

    #include <cppuhelper/supportsservice.hxx>

    /**************************************************************************
                                    TODO
     **************************************************************************

     *************************************************************************/

    #include <osl/file.hxx>
    #include <rtl/ref.hxx>
    #include <com/sun/star/util/theMacroExpander.hpp>
    #include <comphelper/fileurl.hxx>

    #include "officeinstallationdirectories.hxx"

    using namespace com::sun::star;

    static bool makeCanonicalFileURL( OUString & rURL )
    {
        OSL_ENSURE(comphelper::isFileUrl(rURL), "File URL expected!");

        OUString aNormalizedURL;
        if ( osl::FileBase::getAbsoluteFileURL( OUString(),
                                                rURL,
                                                aNormalizedURL )
                == osl::DirectoryItem::E_None )
        {
            osl::DirectoryItem aDirItem;
            if ( osl::DirectoryItem::get( aNormalizedURL, aDirItem )
                    == osl::DirectoryItem::E_None )
            {
                osl::FileStatus aFileStatus( osl_FileStatus_Mask_FileURL );

                if ( aDirItem.getFileStatus( aFileStatus )
                        == osl::DirectoryItem::E_None )
                {
                    aNormalizedURL = aFileStatus.getFileURL();

                    if ( !aNormalizedURL.isEmpty() )
                    {
                        if ( !aNormalizedURL.endsWith("/") )
                            rURL = aNormalizedURL;
                        else
                            rURL = aNormalizedURL
                                    .copy( 0, aNormalizedURL.getLength() - 1 );

                        return true;
                    }
                }
            }
        }
        return false;
    }

    namespace comphelper {

    static OUString const g_aOfficeBrandDirMacro("$(brandbaseurl)");
    static OUString const g_aUserDirMacro("$(userdataurl)");

    OfficeInstallationDirectories::OfficeInstallationDirectories(
            const uno::Reference< uno::XComponentContext > & xCtx )
    : m_xCtx( xCtx )
    {
    }

    // virtual
    OfficeInstallationDirectories::~OfficeInstallationDirectories()
    {
    }

    // util::XOfficeInstallationDirectories

    // virtual
    OUString SAL_CALL
    OfficeInstallationDirectories::getOfficeInstallationDirectoryURL()
    {
        initDirs();
        return *m_pOfficeBrandDir;
    }

    // virtual
    OUString SAL_CALL
    OfficeInstallationDirectories::getOfficeUserDataDirectoryURL()
    {
        initDirs();
        return *m_pUserDir;
    }

    // virtual
    OUString SAL_CALL
    OfficeInstallationDirectories::makeRelocatableURL( const OUString& URL )
    {
        if ( !URL.isEmpty() )
        {
            initDirs();

            OUString aCanonicalURL( URL );
            makeCanonicalFileURL( aCanonicalURL );

            sal_Int32 nIndex = aCanonicalURL.indexOf( *m_pOfficeBrandDir );
            if ( nIndex  != -1 )
            {
                return
                    aCanonicalURL.replaceAt( nIndex,
                                             m_pOfficeBrandDir->getLength(),
                                             g_aOfficeBrandDirMacro );
            }
            else
            {
                nIndex = aCanonicalURL.indexOf( *m_pUserDir );
                if ( nIndex  != -1 )
                {
                    return
                        aCanonicalURL.replaceAt( nIndex,
                                                 m_pUserDir->getLength(),
                                                 g_aUserDirMacro );
                }
            }
        }
        return URL;
    }

    // virtual
    OUString SAL_CALL
    OfficeInstallationDirectories::makeAbsoluteURL( const OUString& URL )
    {
        if ( !URL.isEmpty() )
        {
            sal_Int32 nIndex = URL.indexOf( g_aOfficeBrandDirMacro );
            if ( nIndex != -1 )
            {
                initDirs();

                return
                    URL.replaceAt( nIndex,
                                   g_aOfficeBrandDirMacro.getLength(),
                                   *m_pOfficeBrandDir );
            }
            else
            {
                nIndex = URL.indexOf( g_aUserDirMacro );
                if ( nIndex != -1 )
                {
                    initDirs();

                    return
                        URL.replaceAt( nIndex,
                                       g_aUserDirMacro.getLength(),
                                       *m_pUserDir );
                }
            }
        }
        return URL;
    }

    // lang::XServiceInfo

    // virtual
    OUString SAL_CALL
    OfficeInstallationDirectories::getImplementationName()
    {
        return OUString("com.sun.star.comp.util.OfficeInstallationDirectories");
    }

    // virtual
    sal_Bool SAL_CALL
    OfficeInstallationDirectories::supportsService( const OUString& ServiceName )
    {
        return cppu::supportsService(this, ServiceName);
    }

    // virtual
    uno::Sequence< OUString > SAL_CALL
    OfficeInstallationDirectories::getSupportedServiceNames()
    {
        return { "com.sun.star.util.OfficeInstallationDirectories" };
    }

    void OfficeInstallationDirectories::initDirs()
    {
        if ( m_pOfficeBrandDir == nullptr )
        {
            osl::MutexGuard aGuard( m_aMutex );
            if ( m_pOfficeBrandDir == nullptr )
            {
                m_pOfficeBrandDir.reset( new OUString );
                m_pUserDir.reset( new OUString );

                uno::Reference< util::XMacroExpander > xExpander = util::theMacroExpander::get(m_xCtx);

                *m_pOfficeBrandDir = xExpander->expandMacros( "$BRAND_BASE_DIR" );

                OSL_ENSURE( !m_pOfficeBrandDir->isEmpty(),
                            "Unable to obtain office brand installation directory!" );

                makeCanonicalFileURL( *m_pOfficeBrandDir );

                *m_pUserDir =
                    xExpander->expandMacros(
                        "${$BRAND_BASE_DIR/" LIBO_ETC_FOLDER "/" SAL_CONFIGFILE( "bootstrap" ) ":UserInstallation}" );

                OSL_ENSURE( !m_pUserDir->isEmpty(),
                            "Unable to obtain office user data directory!" );

                makeCanonicalFileURL( *m_pUserDir );
            }
        }
    }

    }

    namespace {

    struct Instance {
        explicit Instance(
            css::uno::Reference<css::uno::XComponentContext> const & context):
            instance(static_cast<cppu::OWeakObject *>(
                new comphelper::OfficeInstallationDirectories(context)))
        {}

        rtl::Reference<css::uno::XInterface> instance;
    };

    struct Singleton:
        public rtl::StaticWithArg<
            Instance, css::uno::Reference<css::uno::XComponentContext>, Singleton>
    {};

    }

    extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
    com_sun_star_comp_util_OfficeInstallationDirectories(
        css::uno::XComponentContext *context,
        css::uno::Sequence<css::uno::Any> const &)
    {
        return cppu::acquire(static_cast<cppu::OWeakObject *>(
                    Singleton::get(context).instance.get()));
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V547 Expression 'm_pOfficeBrandDir == nullptr' is always true.