Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 812 insertions, 0 deletions

diff --git a/svx/source/gallery2/galleryfilestorage.cxx b/svx/source/gallery2/galleryfilestorage.cxx
new file mode 100644
index 0000000000..e9a8cd0aa8
--- /dev/null
+++ b/svx/source/gallery2/galleryfilestorage.cxx
@@ -0,0 +1,812 @@
+/* -*- 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 <svx/unomodel.hxx>
+#include <svx/fmmodel.hxx>
+#include <svx/galtheme.hxx>
+#include <galobj.hxx>
+#include <galleryfilestorage.hxx>
+#include <svx/galleryobjectcollection.hxx>
+#include <svx/gallery1.hxx>
+#include <osl/thread.hxx>
+#include "codec.hxx"
+#include "gallerydrawmodel.hxx"
+#include <vcl/cvtgrf.hxx>
+#include <vcl/filter/SvmWriter.hxx>
+
+#include <sal/log.hxx>
+
+#include <com/sun/star/ucb/ContentCreationException.hpp>
+#include <com/sun/star/sdbc/XResultSet.hpp>
+#include <com/sun/star/ucb/XContentAccess.hpp>
+#include <comphelper/fileformat.h>
+#include <comphelper/graphicmimetype.hxx>
+#include <comphelper/processfactory.hxx>
+#include <tools/urlobj.hxx>
+#include <comphelper/diagnose_ex.hxx>
+#include <tools/datetime.hxx>
+#include <unotools/datetime.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+#include <unotools/streamwrap.hxx>
+#include <unotools/tempfile.hxx>
+#include <ucbhelper/content.hxx>
+#include <tools/vcompat.hxx>
+
+using namespace ::com::sun::star;
+
+GalleryFileStorage::GalleryFileStorage(
+    const GalleryStorageLocations& rGalleryBinaryStorageLocations,
+    GalleryObjectCollection& rGalleryObjectCollection, bool bReadOnly)
+    : maGalleryStorageLocations(rGalleryBinaryStorageLocations)
+    , mrGalleryObjectCollection(rGalleryObjectCollection)
+    , mbReadOnly(bReadOnly)
+    , m_bDestDirRelative(false)
+{
+    ImplCreateSvDrawStorage();
+}
+
+GalleryFileStorage::~GalleryFileStorage() { clearSotStorage(); }
+
+void GalleryFileStorage::setDestDir(const OUString& rDestDir, bool bRelative)
+{
+    m_aDestDir = rDestDir;
+    m_bDestDirRelative = bRelative;
+}
+
+void GalleryFileStorage::clearSotStorage() { m_aSvDrawStorageRef.clear(); }
+
+void GalleryFileStorage::ImplCreateSvDrawStorage()
+{
+    try
+    {
+        m_aSvDrawStorageRef
+            = new SotStorage(false, GetSdvURL().GetMainURL(INetURLObject::DecodeMechanism::NONE),
+                             mbReadOnly ? StreamMode::READ : StreamMode::STD_READWRITE);
+        // #i50423# ReadOnly may not been set though the file can't be written (because of security reasons)
+        if ((m_aSvDrawStorageRef->GetError() != ERRCODE_NONE) && !mbReadOnly)
+            m_aSvDrawStorageRef = new SotStorage(
+                false, GetSdvURL().GetMainURL(INetURLObject::DecodeMechanism::NONE),
+                StreamMode::READ);
+    }
+    catch (const css::ucb::ContentCreationException&)
+    {
+        TOOLS_WARN_EXCEPTION("svx", "failed to open: " << GetSdvURL().GetMainURL(
+                                                              INetURLObject::DecodeMechanism::NONE)
+                                                       << "due to");
+    }
+}
+
+const tools::SvRef<SotStorage>& GalleryFileStorage::GetSvDrawStorage() const
+{
+    return m_aSvDrawStorageRef;
+}
+
+bool GalleryFileStorage::implWrite(const GalleryTheme& rTheme, const GalleryThemeEntry* pThm)
+{
+    INetURLObject aPathURL(GetThmURL());
+
+    aPathURL.removeSegment();
+    aPathURL.removeFinalSlash();
+
+    DBG_ASSERT(aPathURL.GetProtocol() != INetProtocol::NotValid, "invalid URL");
+
+    if (FileExists(aPathURL) || CreateDir(aPathURL))
+    {
+#ifdef UNX
+        std::unique_ptr<SvStream> pOStm(::utl::UcbStreamHelper::CreateStream(
+            GetThmURL().GetMainURL(INetURLObject::DecodeMechanism::NONE),
+            StreamMode::WRITE | StreamMode::COPY_ON_SYMLINK | StreamMode::TRUNC));
+#else
+        std::unique_ptr<SvStream> pOStm(::utl::UcbStreamHelper::CreateStream(
+            GetThmURL().GetMainURL(INetURLObject::DecodeMechanism::NONE),
+            StreamMode::WRITE | StreamMode::TRUNC));
+#endif
+
+        if (pOStm)
+        {
+            writeGalleryTheme(*pOStm, rTheme, pThm);
+            pOStm.reset();
+            return true;
+        }
+
+        return false;
+    }
+    return true;
+}
+
+void GalleryFileStorage::insertObject(const SgaObject& rObj, GalleryObject* pFoundEntry,
+                                      sal_uInt32 nInsertPos)
+{
+    if (pFoundEntry)
+    {
+        GalleryObject aNewEntry;
+
+        // update title of new object if necessary
+        if (rObj.GetTitle().isEmpty())
+        {
+            std::unique_ptr<SgaObject> pOldObj(implReadSgaObject(pFoundEntry));
+
+            if (pOldObj)
+            {
+                const_cast<SgaObject&>(rObj).SetTitle(pOldObj->GetTitle());
+            }
+        }
+        else if (rObj.GetTitle() == "__<empty>__")
+            const_cast<SgaObject&>(rObj).SetTitle("");
+
+        implWriteSgaObject(rObj, nInsertPos, &aNewEntry);
+        pFoundEntry->nOffset = aNewEntry.nOffset;
+    }
+    else
+        implWriteSgaObject(rObj, nInsertPos, nullptr);
+}
+
+void GalleryFileStorage::removeObject(const std::unique_ptr<GalleryObject>& pEntry)
+{
+    if (mrGalleryObjectCollection.getObjectList().empty())
+        KillFile(GetSdgURL());
+
+    if (SgaObjKind::SvDraw == pEntry->eObjKind)
+        GetSvDrawStorage()->Remove(
+            pEntry->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE));
+}
+
+std::unique_ptr<SgaObject> GalleryFileStorage::implReadSgaObject(GalleryObject const* pEntry)
+{
+    std::unique_ptr<SgaObject> pSgaObj;
+
+    if (pEntry)
+    {
+        std::unique_ptr<SvStream> pIStm(::utl::UcbStreamHelper::CreateStream(
+            GetSdgURL().GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::READ));
+
+        if (pIStm)
+        {
+            sal_uInt32 nInventor;
+
+            // Check to ensure that the file is a valid SGA file
+            pIStm->Seek(pEntry->nOffset);
+            pIStm->ReadUInt32(nInventor);
+
+            if (nInventor == COMPAT_FORMAT('S', 'G', 'A', '3'))
+            {
+                pIStm->Seek(pEntry->nOffset);
+
+                switch (pEntry->eObjKind)
+                {
+                    case SgaObjKind::Bitmap:
+                        pSgaObj.reset(new SgaObjectBmp());
+                        break;
+                    case SgaObjKind::Animation:
+                        pSgaObj.reset(new SgaObjectAnim());
+                        break;
+                    case SgaObjKind::Inet:
+                        pSgaObj.reset(new SgaObjectINet());
+                        break;
+                    case SgaObjKind::SvDraw:
+                        pSgaObj.reset(new SgaObjectSvDraw());
+                        break;
+                    case SgaObjKind::Sound:
+                        pSgaObj.reset(new SgaObjectSound());
+                        break;
+
+                    default:
+                        break;
+                }
+
+                if (pSgaObj)
+                {
+                    ReadSgaObject(*pIStm, *pSgaObj);
+                    pSgaObj->ImplUpdateURL(*pEntry->m_oStorageUrl);
+                }
+            }
+        }
+    }
+
+    return pSgaObj;
+}
+
+bool GalleryFileStorage::implWriteSgaObject(const SgaObject& rObj, sal_uInt32 nPos,
+                                            GalleryObject* pExistentEntry)
+{
+    std::unique_ptr<SvStream> pOStm(::utl::UcbStreamHelper::CreateStream(
+        GetSdgURL().GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::WRITE));
+    bool bRet = false;
+
+    if (pOStm)
+    {
+        const sal_uInt32 nOffset = pOStm->Seek(STREAM_SEEK_TO_END);
+
+        rObj.WriteData(*pOStm, m_aDestDir);
+
+        if (!pOStm->GetError())
+        {
+            GalleryObject* pEntry;
+
+            if (!pExistentEntry)
+            {
+                pEntry = new GalleryObject;
+                if (nPos < mrGalleryObjectCollection.size())
+                {
+                    mrGalleryObjectCollection.getObjectList().emplace(
+                        mrGalleryObjectCollection.getObjectList().begin() + nPos, pEntry);
+                }
+                else
+                    mrGalleryObjectCollection.getObjectList().emplace_back(pEntry);
+            }
+            else
+                pEntry = pExistentEntry;
+
+            pEntry->m_oStorageUrl = rObj.GetURL();
+
+            pEntry->nOffset = nOffset;
+            pEntry->eObjKind = rObj.GetObjKind();
+            bRet = true;
+        }
+    }
+
+    return bRet;
+}
+
+bool GalleryFileStorage::readModel(const GalleryObject* pObject, SdrModel& rModel)
+{
+    tools::SvRef<SotStorage> xSotStorage(GetSvDrawStorage());
+    bool bRet = false;
+    const INetURLObject aURL(ImplGetURL(pObject));
+
+    if (xSotStorage.is())
+    {
+        const OUString aStreamName(GetSvDrawStreamNameFromURL(aURL));
+        tools::SvRef<SotStorageStream> xInputStream(
+            xSotStorage->OpenSotStream(aStreamName, StreamMode::READ));
+
+        if (xInputStream.is() && !xInputStream->GetError())
+        {
+            xInputStream->SetBufferSize(STREAMBUF_SIZE);
+            bRet = GallerySvDrawImport(*xInputStream, rModel);
+            xInputStream->SetBufferSize(0);
+        }
+    }
+    return bRet;
+}
+
+SgaObjectSvDraw GalleryFileStorage::insertModel(const FmFormModel& rModel,
+                                                const INetURLObject& rUserURL)
+{
+    INetURLObject aURL(implCreateUniqueURL(SgaObjKind::SvDraw, rUserURL));
+    tools::SvRef<SotStorage> xSotStorage(GetSvDrawStorage());
+    bool bRet = false;
+
+    if (xSotStorage.is())
+    {
+        const OUString aStreamName(GetSvDrawStreamNameFromURL(aURL));
+        tools::SvRef<SotStorageStream> xOutputStream(
+            xSotStorage->OpenSotStream(aStreamName, StreamMode::WRITE | StreamMode::TRUNC));
+
+        if (xOutputStream.is() && !xOutputStream->GetError())
+        {
+            SvMemoryStream aMemoryStream(65535, 65535);
+            FmFormModel* pFormModel = const_cast<FmFormModel*>(&rModel);
+
+            pFormModel->BurnInStyleSheetAttributes();
+
+            {
+                uno::Reference<io::XOutputStream> xDocOut(
+                    new utl::OOutputStreamWrapper(aMemoryStream));
+
+                if (xDocOut.is())
+                    (void)SvxDrawingLayerExport(pFormModel, xDocOut);
+            }
+
+            aMemoryStream.Seek(0);
+
+            xOutputStream->SetBufferSize(16348);
+            GalleryCodec aCodec(*xOutputStream);
+            aCodec.Write(aMemoryStream);
+
+            xOutputStream->SetBufferSize(0);
+            xOutputStream->Commit();
+            bRet = !xOutputStream->GetError();
+        }
+    }
+    if (bRet)
+    {
+        SgaObjectSvDraw aObjSvDraw(rModel, aURL);
+        return aObjSvDraw;
+    }
+    return SgaObjectSvDraw();
+}
+
+bool GalleryFileStorage::readModelStream(const GalleryObject* pObject,
+                                         tools::SvRef<SotTempStream> const& rxModelStream)
+{
+    const INetURLObject aURL(ImplGetURL(pObject));
+    tools::SvRef<SotStorage> xSotStorage(GetSvDrawStorage());
+    bool bRet = false;
+
+    if (xSotStorage.is())
+    {
+        const OUString aStreamName(GetSvDrawStreamNameFromURL(aURL));
+        tools::SvRef<SotStorageStream> xInputStream(
+            xSotStorage->OpenSotStream(aStreamName, StreamMode::READ));
+
+        if (xInputStream.is() && !xInputStream->GetError())
+        {
+            sal_uInt32 nVersion = 0;
+
+            xInputStream->SetBufferSize(16348);
+
+            if (GalleryCodec::IsCoded(*xInputStream, nVersion))
+            {
+                SvxGalleryDrawModel aModel;
+
+                if (aModel.GetModel())
+                {
+                    if (GallerySvDrawImport(*xInputStream, *aModel.GetModel()))
+                    {
+                        aModel.GetModel()->BurnInStyleSheetAttributes();
+
+                        {
+                            uno::Reference<io::XOutputStream> xDocOut(
+                                new utl::OOutputStreamWrapper(*rxModelStream));
+
+                            SvxDrawingLayerExport(aModel.GetModel(), xDocOut);
+                        }
+                    }
+
+                    bRet = (rxModelStream->GetError() == ERRCODE_NONE);
+                }
+            }
+
+            xInputStream->SetBufferSize(0);
+        }
+    }
+    return bRet;
+}
+
+SgaObjectSvDraw
+GalleryFileStorage::insertModelStream(const tools::SvRef<SotTempStream>& rxModelStream,
+                                      const INetURLObject& rUserURL)
+{
+    INetURLObject aURL(implCreateUniqueURL(SgaObjKind::SvDraw, rUserURL));
+    tools::SvRef<SotStorage> xSotStorage(GetSvDrawStorage());
+
+    if (xSotStorage.is())
+    {
+        const OUString aStreamName(GetSvDrawStreamNameFromURL(aURL));
+        tools::SvRef<SotStorageStream> xOutputStream(
+            xSotStorage->OpenSotStream(aStreamName, StreamMode::WRITE | StreamMode::TRUNC));
+
+        if (xOutputStream.is() && !xOutputStream->GetError())
+        {
+            GalleryCodec aCodec(*xOutputStream);
+
+            xOutputStream->SetBufferSize(16348);
+            aCodec.Write(*rxModelStream);
+
+            if (!xOutputStream->GetError())
+            {
+                xOutputStream->Seek(0);
+                SgaObjectSvDraw aObjSvDraw(*xOutputStream, aURL);
+                return aObjSvDraw;
+            }
+        }
+    }
+    return SgaObjectSvDraw();
+}
+
+INetURLObject GalleryFileStorage::implCreateUniqueURL(SgaObjKind eObjKind,
+                                                      const INetURLObject& rUserURL,
+                                                      ConvertDataFormat nFormat)
+{
+    INetURLObject aDir(rUserURL);
+    INetURLObject aInfoFileURL(rUserURL);
+    INetURLObject aNewURL;
+    sal_uInt32 nNextNumber = 1999;
+    char const* pExt = nullptr;
+    bool bExists;
+
+    aDir.Append(u"dragdrop");
+    CreateDir(aDir);
+
+    aInfoFileURL.Append(u"sdddndx1");
+
+    // read next possible number
+    if (FileExists(aInfoFileURL))
+    {
+        std::unique_ptr<SvStream> pIStm(::utl::UcbStreamHelper::CreateStream(
+            aInfoFileURL.GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::READ));
+
+        if (pIStm)
+        {
+            pIStm->ReadUInt32(nNextNumber);
+        }
+    }
+
+    pExt = comphelper::GraphicMimeTypeHelper::GetExtensionForConvertDataFormat(nFormat);
+
+    do
+    {
+        // get URL
+        if (SgaObjKind::SvDraw == eObjKind)
+        {
+            OUString aFileName = "gallery/svdraw/dd" + OUString::number(++nNextNumber % 99999999);
+            aNewURL = INetURLObject(aFileName, INetProtocol::PrivSoffice);
+
+            bExists = false;
+
+            for (auto const& pObject : mrGalleryObjectCollection.getObjectList())
+            {
+                if (*pObject->m_oStorageUrl == aNewURL)
+                {
+                    bExists = true;
+                    break;
+                }
+            }
+        }
+        else
+        {
+            OUString aFileName = "dd" + OUString::number(++nNextNumber % 999999);
+
+            if (pExt)
+                aFileName += OUString(pExt, strlen(pExt), RTL_TEXTENCODING_ASCII_US);
+
+            aNewURL = aDir;
+            aNewURL.Append(aFileName);
+
+            bExists = FileExists(aNewURL);
+        }
+    } while (bExists);
+
+    // write updated number
+    std::unique_ptr<SvStream> pOStm(::utl::UcbStreamHelper::CreateStream(
+        aInfoFileURL.GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::WRITE));
+
+    if (pOStm)
+    {
+        pOStm->WriteUInt32(nNextNumber);
+    }
+
+    return aNewURL;
+}
+
+SgaObjectBmp GalleryFileStorage::insertGraphic(const Graphic& rGraphic, const GfxLink& aGfxLink,
+                                               const ConvertDataFormat& nExportFormat,
+                                               const INetURLObject& rUserURL)
+{
+    const INetURLObject aURL(implCreateUniqueURL(SgaObjKind::Bitmap, rUserURL, nExportFormat));
+    std::unique_ptr<SvStream> pOStm(
+        ::utl::UcbStreamHelper::CreateStream(aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE),
+                                             StreamMode::WRITE | StreamMode::TRUNC));
+    bool bRet = false;
+
+    if (pOStm)
+    {
+        pOStm->SetVersion(SOFFICE_FILEFORMAT_50);
+
+        if (ConvertDataFormat::SVM == nExportFormat)
+        {
+            GDIMetaFile aMtf(rGraphic.GetGDIMetaFile());
+
+            SvmWriter aWriter(*pOStm);
+            aWriter.Write(aMtf);
+            bRet = (pOStm->GetError() == ERRCODE_NONE);
+        }
+        else
+        {
+            if (aGfxLink.GetDataSize() && aGfxLink.GetData())
+            {
+                pOStm->WriteBytes(aGfxLink.GetData(), aGfxLink.GetDataSize());
+                bRet = (pOStm->GetError() == ERRCODE_NONE);
+            }
+            else
+                bRet = (GraphicConverter::Export(*pOStm, rGraphic, nExportFormat) == ERRCODE_NONE);
+        }
+
+        pOStm.reset();
+    }
+    if (bRet)
+    {
+        const SgaObjectBmp aObjBmp(aURL);
+        return aObjBmp;
+    }
+    return SgaObjectBmp();
+}
+
+SgaObjectSvDraw GalleryFileStorage::updateSvDrawObject(const GalleryObject* pEntry)
+{
+    if (GetSvDrawStorage().is())
+    {
+        const OUString aStmName(GetSvDrawStreamNameFromURL(*pEntry->m_oStorageUrl));
+        tools::SvRef<SotStorageStream> pIStm
+            = GetSvDrawStorage()->OpenSotStream(aStmName, StreamMode::READ);
+
+        if (pIStm.is() && !pIStm->GetError())
+        {
+            pIStm->SetBufferSize(16384);
+
+            SgaObjectSvDraw aNewObj(*pIStm, *pEntry->m_oStorageUrl);
+
+            pIStm->SetBufferSize(0);
+
+            return aNewObj;
+        }
+    }
+    return SgaObjectSvDraw();
+}
+
+void GalleryFileStorage::updateTheme()
+{
+    ::utl::TempFileNamed aTmp;
+    INetURLObject aInURL(GetSdgURL());
+    INetURLObject aTmpURL(aTmp.GetURL());
+
+    DBG_ASSERT(aInURL.GetProtocol() != INetProtocol::NotValid, "invalid URL");
+    DBG_ASSERT(aTmpURL.GetProtocol() != INetProtocol::NotValid, "invalid URL");
+
+    std::unique_ptr<SvStream> pIStm(::utl::UcbStreamHelper::CreateStream(
+        aInURL.GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::READ));
+    std::unique_ptr<SvStream> pTmpStm(::utl::UcbStreamHelper::CreateStream(
+        aTmpURL.GetMainURL(INetURLObject::DecodeMechanism::NONE),
+        StreamMode::WRITE | StreamMode::TRUNC));
+
+    if (pIStm && pTmpStm)
+    {
+        for (const auto& i : mrGalleryObjectCollection.getObjectList())
+        {
+            GalleryObject* pEntry = i.get();
+            std::unique_ptr<SgaObject> pObj;
+
+            switch (pEntry->eObjKind)
+            {
+                case SgaObjKind::Bitmap:
+                    pObj.reset(new SgaObjectBmp());
+                    break;
+                case SgaObjKind::Animation:
+                    pObj.reset(new SgaObjectAnim());
+                    break;
+                case SgaObjKind::Inet:
+                    pObj.reset(new SgaObjectINet());
+                    break;
+                case SgaObjKind::SvDraw:
+                    pObj.reset(new SgaObjectSvDraw());
+                    break;
+                case SgaObjKind::Sound:
+                    pObj.reset(new SgaObjectSound());
+                    break;
+
+                default:
+                    break;
+            }
+
+            if (pObj)
+            {
+                pIStm->Seek(pEntry->nOffset);
+                ReadSgaObject(*pIStm, *pObj);
+                pEntry->nOffset = pTmpStm->Tell();
+                WriteSgaObject(*pTmpStm, *pObj);
+            }
+        }
+    }
+    else
+    {
+        OSL_FAIL("File(s) could not be opened");
+    }
+
+    pIStm.reset();
+    pTmpStm.reset();
+
+    CopyFile(aTmpURL, aInURL);
+    KillFile(aTmpURL);
+
+    ErrCode nStorErr = ERRCODE_NONE;
+
+    try
+    {
+        tools::SvRef<SotStorage> aTempStorageRef(
+            new SotStorage(false, aTmpURL.GetMainURL(INetURLObject::DecodeMechanism::NONE),
+                           StreamMode::STD_READWRITE));
+        GetSvDrawStorage()->CopyTo(aTempStorageRef.get());
+        nStorErr = GetSvDrawStorage()->GetError();
+    }
+    catch (const css::ucb::ContentCreationException&)
+    {
+        TOOLS_WARN_EXCEPTION("svx", "failed to open: "
+                                        << aTmpURL.GetMainURL(INetURLObject::DecodeMechanism::NONE)
+                                        << "due to");
+        nStorErr = ERRCODE_IO_GENERAL;
+    }
+
+    if (nStorErr == ERRCODE_NONE)
+    {
+        clearSotStorage();
+        CopyFile(aTmpURL, GetSdvURL());
+        ImplCreateSvDrawStorage();
+    }
+
+    KillFile(aTmpURL);
+}
+
+void GalleryFileStorage::insertFileOrDirURL(const INetURLObject& rFileOrDirURL,
+                                            std::vector<INetURLObject>& rURLVector)
+{
+    INetURLObject aURL;
+    try
+    {
+        ::ucbhelper::Content aCnt(rFileOrDirURL.GetMainURL(INetURLObject::DecodeMechanism::NONE),
+                                  uno::Reference<ucb::XCommandEnvironment>(),
+                                  comphelper::getProcessComponentContext());
+        bool bFolder = false;
+
+        aCnt.getPropertyValue("IsFolder") >>= bFolder;
+
+        if (bFolder)
+        {
+            uno::Sequence<OUString> aProps{ "Url" };
+            uno::Reference<sdbc::XResultSet> xResultSet(
+                aCnt.createCursor(aProps, ::ucbhelper::INCLUDE_DOCUMENTS_ONLY));
+            uno::Reference<ucb::XContentAccess> xContentAccess(xResultSet, uno::UNO_QUERY);
+            if (xContentAccess.is())
+            {
+                while (xResultSet->next())
+                {
+                    aURL.SetSmartURL(xContentAccess->queryContentIdentifierString());
+                    rURLVector.push_back(aURL);
+                }
+            }
+        }
+        else
+            rURLVector.push_back(rFileOrDirURL);
+    }
+    catch (const ucb::ContentCreationException&)
+    {
+    }
+    catch (const uno::RuntimeException&)
+    {
+    }
+    catch (const uno::Exception&)
+    {
+    }
+}
+
+SvStream& GalleryFileStorage::writeGalleryTheme(SvStream& rOStm, const GalleryTheme& rTheme,
+                                                const GalleryThemeEntry* pThm)
+{
+    const INetURLObject rRelURL1 = rTheme.GetParent()->GetRelativeURL();
+    const INetURLObject rRelURL2 = rTheme.GetParent()->GetUserURL();
+    const sal_uInt32 rId = rTheme.GetId();
+    sal_uInt32 nCount = mrGalleryObjectCollection.size();
+    bool bRel;
+
+    rOStm.WriteUInt16(0x0004);
+    write_uInt16_lenPrefixed_uInt8s_FromOUString(rOStm, pThm->GetThemeName(),
+                                                 RTL_TEXTENCODING_UTF8);
+    rOStm.WriteUInt32(nCount);
+    rOStm.WriteUInt16(RTL_TEXTENCODING_UTF8); // unused on reading
+
+    for (sal_uInt32 i = 0; i < nCount; i++)
+    {
+        const GalleryObject* pObj = mrGalleryObjectCollection.getForPosition(i);
+        OUString aPath;
+
+        if (SgaObjKind::SvDraw == pObj->eObjKind)
+        {
+            aPath = GetSvDrawStreamNameFromURL(*pObj->m_oStorageUrl);
+            bRel = false;
+        }
+        else
+        {
+            aPath = pObj->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE);
+            aPath = aPath.copy(
+                0, std::min(rRelURL1.GetMainURL(INetURLObject::DecodeMechanism::NONE).getLength(),
+                            aPath.getLength()));
+            bRel = aPath == rRelURL1.GetMainURL(INetURLObject::DecodeMechanism::NONE);
+
+            if (bRel
+                && (pObj->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE)
+                        .getLength()
+                    > (rRelURL1.GetMainURL(INetURLObject::DecodeMechanism::NONE).getLength() + 1)))
+            {
+                aPath = pObj->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE);
+                aPath = aPath.copy(
+                    std::min(rRelURL1.GetMainURL(INetURLObject::DecodeMechanism::NONE).getLength(),
+                             aPath.getLength()));
+            }
+            else
+            {
+                aPath = pObj->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE);
+                aPath = aPath.copy(
+                    0,
+                    std::min(rRelURL2.GetMainURL(INetURLObject::DecodeMechanism::NONE).getLength(),
+                             aPath.getLength()));
+                bRel = aPath == rRelURL2.GetMainURL(INetURLObject::DecodeMechanism::NONE);
+
+                if (bRel
+                    && (pObj->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE)
+                            .getLength()
+                        > (rRelURL2.GetMainURL(INetURLObject::DecodeMechanism::NONE).getLength()
+                           + 1)))
+                {
+                    aPath = pObj->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE);
+                    aPath = aPath.copy(std::min(
+                        rRelURL2.GetMainURL(INetURLObject::DecodeMechanism::NONE).getLength(),
+                        aPath.getLength()));
+                }
+                else
+                    aPath = pObj->m_oStorageUrl->GetMainURL(INetURLObject::DecodeMechanism::NONE);
+            }
+        }
+
+        if (!m_aDestDir.isEmpty())
+        {
+            bool aFound = aPath.indexOf(m_aDestDir) != -1;
+            aPath = aPath.replaceFirst(m_aDestDir, "");
+            if (aFound)
+                bRel = m_bDestDirRelative;
+            else
+                SAL_WARN("svx", "failed to replace destdir of '" << m_aDestDir << "' in '" << aPath
+                                                                 << "'");
+        }
+
+        rOStm.WriteBool(bRel);
+        write_uInt16_lenPrefixed_uInt8s_FromOUString(rOStm, aPath, RTL_TEXTENCODING_UTF8);
+        rOStm.WriteUInt32(pObj->nOffset).WriteUInt16(static_cast<sal_uInt16>(pObj->eObjKind));
+    }
+
+    // more recently, a 512-byte reserve buffer is written,
+    // to recognize them two sal_uInt32-Ids will be written.
+    rOStm.WriteUInt32(COMPAT_FORMAT('G', 'A', 'L', 'R'))
+        .WriteUInt32(COMPAT_FORMAT('E', 'S', 'R', 'V'));
+
+    const sal_uInt64 nReservePos = rOStm.Tell();
+    std::unique_ptr<VersionCompatWrite> pCompat(new VersionCompatWrite(rOStm, 2));
+
+    rOStm.WriteUInt32(rId).WriteBool(pThm->IsNameFromResource()); // From version 2 and up
+
+    pCompat.reset();
+
+    // Fill the rest of the buffer.
+    const tools::Long nRest
+        = std::max(tools::Long(512 - (rOStm.Tell() - nReservePos)), tools::Long(0));
+
+    if (nRest)
+    {
+        std::unique_ptr<char[]> pReserve(new char[nRest]);
+        memset(pReserve.get(), 0, nRest);
+        rOStm.WriteBytes(pReserve.get(), nRest);
+    }
+
+    return rOStm;
+}
+
+DateTime GalleryFileStorage::getModificationDate() const
+{
+    ::ucbhelper::Content aCnt(GetThmURL().GetMainURL(INetURLObject::DecodeMechanism::NONE),
+                              uno::Reference<ucb::XCommandEnvironment>(),
+                              comphelper::getProcessComponentContext());
+    util::DateTime aDateTimeModified;
+    DateTime aDateTime(DateTime::EMPTY);
+
+    aCnt.getPropertyValue("DateModified") >>= aDateTimeModified;
+    ::utl::typeConvert(aDateTimeModified, aDateTime);
+
+    return aDateTime;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */