Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

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

1 files changed, 956 insertions, 0 deletions

diff --git a/shell/source/win32/shlxthandler/ooofilt/ooofilt.cxx b/shell/source/win32/shlxthandler/ooofilt/ooofilt.cxx
new file mode 100644
index 000000000..c45c69930
--- /dev/null
+++ b/shell/source/win32/shlxthandler/ooofilt/ooofilt.cxx
@@ -0,0 +1,956 @@
+/* -*- 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 .
+ */
+
+
+//  File:       ooofilt.cxx
+//  Contents:   Filter Implementation for OpenOffice.Org Document using
+//              Indexing Service
+//  Summary:    The LibreOffice filter reads OpenOffice.org XML files (with
+//              the extension .sxw .sxi, etc) and ODF files and extract
+//              their content, author, keywords,subject,comments and title
+//              to be filtered.
+
+//  Platform:   Windows 2000, Windows XP
+
+#include <contentreader.hxx>
+#include <metainforeader.hxx>
+#include <registry.hxx>
+#include <fileextensions.hxx>
+
+
+//  Include file    Purpose
+//  windows.h       Win32 declarations
+//  string.h        string wstring declarations
+//  filter.h        IFilter interface declarations
+//  filterr.h       FACILITY_ITF error definitions for IFilter
+//  ntquery.h       Indexing Service declarations
+//  assert.h        assertion function.
+//  ooofilt.hxx     LibreOffice filter declarations
+//  propspec.hxx    PROPSPEC
+
+
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+
+#include <string.h>
+#include <filter.h>
+#include <filterr.h>
+#include <ntquery.h>
+#include <assert.h>
+#include "ooofilt.hxx"
+#include <objidl.h>
+#include <stdio.h>
+#include "propspec.hxx"
+
+#include <stream_helper.hxx>
+
+#include <olectl.h> // declarations of DllRegisterServer/DllUnregisterServer
+
+//C-------------------------------------------------------------------------
+//  Class:      COooFilter
+//  Summary:    Implements LibreOffice filter class
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::COooFilter
+//  Summary:    Class constructor
+//  Arguments:  void
+//  Purpose:    Manages global instance count
+
+COooFilter::COooFilter() :
+    m_lRefs(1),
+    m_pContentReader(nullptr),
+    m_pMetaInfoReader(nullptr),
+    m_eState(FilterState::FilteringContent),
+    m_ulUnicodeBufferLen(0),
+    m_ulUnicodeCharsRead(0),
+    m_ulPropertyNum(0),
+    m_ulCurrentPropertyNum(0),
+    m_ulChunkID(1),
+    m_fContents(false),
+    m_fEof(false),
+    m_ChunkPosition(0),
+    m_cAttributes(0),
+    m_pAttributes(nullptr),
+    m_pStream(nullptr)
+
+{
+    InterlockedIncrement( &g_lInstances );
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::~COooFilter
+//  Summary:    Class destructor
+//  Arguments:  void
+//  Purpose:    Manages global instance count and file handle
+
+COooFilter::~COooFilter()
+{
+    delete [] m_pAttributes;
+    delete m_pContentReader;
+    delete m_pMetaInfoReader;
+    delete m_pStream;
+
+    InterlockedDecrement( &g_lInstances );
+}
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::QueryInterface      (IUnknown::QueryInterface)
+//  Summary:    Queries for requested interface //  Arguments:  riid
+//              [in] Reference IID of requested interface
+//              ppvObject
+//              [out] Address that receives requested interface pointer
+//  Returns:    S_OK
+//              Interface is supported
+//              E_NOINTERFACE
+//              Interface is not supported
+
+HRESULT STDMETHODCALLTYPE COooFilter::QueryInterface(
+    REFIID riid,
+    void  ** ppvObject)
+{
+    IUnknown *pUnkTemp = nullptr;
+    if ( IID_IFilter == riid )
+        pUnkTemp = static_cast<IFilter *>(this);
+    else if ( IID_IPersistFile == riid )
+        pUnkTemp = static_cast<IPersistFile *>(this);
+    else if ( IID_IPersist == riid )
+        pUnkTemp = static_cast<IPersistFile *>(this);
+    else if (IID_IPersistStream == riid)
+        pUnkTemp = static_cast<IPersistStream *>(this);
+    else if ( IID_IUnknown == riid )
+        pUnkTemp = static_cast<IPersistFile *>(this);
+    else
+    {
+        *ppvObject = nullptr;
+        return E_NOINTERFACE;
+    }
+    *ppvObject = pUnkTemp;
+    pUnkTemp->AddRef();
+    return S_OK;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::AddRef              (IUnknown::AddRef)
+//  Summary:    Increments interface refcount
+//  Arguments:  void
+//  Returns:    Value of incremented interface refcount
+
+ULONG STDMETHODCALLTYPE COooFilter::AddRef()
+{
+    return InterlockedIncrement( &m_lRefs );
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::Release             (IUnknown::Release)
+//  Summary:    Decrements interface refcount, deleting if unreferenced
+//  Arguments:  void
+//  Returns:    Value of decremented interface refcount
+
+ULONG STDMETHODCALLTYPE COooFilter::Release()
+{
+    ULONG ulTmp = InterlockedDecrement( &m_lRefs );
+
+    if ( 0 == ulTmp )
+        delete this;
+    return ulTmp;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::Init                (IFilter::Init)
+//  Summary:    Initializes LibreOffice filter instance
+//  Arguments:  grfFlags
+//                  [in] Flags for filter behavior
+//              cAttributes
+//                  [in] Number attributes in array aAttributes
+//              aAttributes
+//                  [in] Array of requested attribute strings
+//              pFlags
+//                  [out] Pointer to return flags for additional properties
+//  Returns:    S_OK
+//                  Initialization succeeded
+//              E_FAIL
+//                  File not previously loaded
+//              E_INVALIDARG
+//                  Count and contents of attributes do not agree
+//              FILTER_E_ACCESS
+//                  Unable to access file to be filtered
+//              FILTER_E_PASSWORD
+//                  (not implemented)
+
+const int COUNT_ATTRIBUTES = 5;
+
+SCODE STDMETHODCALLTYPE COooFilter::Init(
+    ULONG grfFlags,
+    ULONG cAttributes,
+    FULLPROPSPEC const * aAttributes,
+    ULONG * pFlags)
+{
+    // Enumerate OLE properties, since any NTFS file can have them
+    *pFlags = IFILTER_FLAGS_OLE_PROPERTIES;
+    try
+    {
+        m_fContents = false;
+        m_ulPropertyNum = 0;
+        m_ulCurrentPropertyNum = 0;
+        if ( m_cAttributes > 0 )
+        {
+            delete[] m_pAttributes;
+            m_pAttributes = nullptr;
+            m_cAttributes = 0;
+        }
+        if( 0 < cAttributes )
+        {
+            // Filter properties specified in aAttributes
+            if ( nullptr == aAttributes )
+                return E_INVALIDARG;
+            m_pAttributes = new CFullPropSpec[cAttributes];
+            m_cAttributes = cAttributes;
+            // Is caller want to filter contents?
+            CFullPropSpec const *pAttrib = reinterpret_cast<CFullPropSpec const *>(aAttributes);
+            ULONG ulNumAttr;
+            for ( ulNumAttr = 0 ; ulNumAttr < cAttributes; ulNumAttr++ )
+            {
+                if ( pAttrib[ulNumAttr].IsPropertyPropid() &&
+                     pAttrib[ulNumAttr].GetPropertyPropid() == PID_STG_CONTENTS &&
+                     pAttrib[ulNumAttr].GetPropSet() == guidStorage )
+                {
+                    m_fContents = true;
+                }
+                // save the requested properties.
+                m_pAttributes[ulNumAttr] = pAttrib[ulNumAttr];
+            }
+        }
+        else if ( grfFlags & IFILTER_INIT_APPLY_INDEX_ATTRIBUTES )
+        {
+            // Filter contents and all pseudo-properties
+            m_fContents = true;
+
+            m_pAttributes = new CFullPropSpec[COUNT_ATTRIBUTES];
+            m_cAttributes = COUNT_ATTRIBUTES;
+            m_pAttributes[0].SetPropSet( FMTID_SummaryInformation );
+            m_pAttributes[0].SetProperty( PIDSI_AUTHOR );
+            m_pAttributes[1].SetPropSet( FMTID_SummaryInformation );
+            m_pAttributes[1].SetProperty( PIDSI_TITLE );
+            m_pAttributes[2].SetPropSet( FMTID_SummaryInformation );
+            m_pAttributes[2].SetProperty( PIDSI_SUBJECT );
+            m_pAttributes[3].SetPropSet( FMTID_SummaryInformation );
+            m_pAttributes[3].SetProperty( PIDSI_KEYWORDS );
+            m_pAttributes[4].SetPropSet( FMTID_SummaryInformation );
+            m_pAttributes[4].SetProperty( PIDSI_COMMENTS );
+        }
+        else if ( 0 == grfFlags )
+        {
+            // Filter only contents
+            m_fContents = true;
+        }
+        else
+            m_fContents = false;
+        // Re-initialize
+        if ( m_fContents )
+        {
+            m_fEof = false;
+            m_eState = FilterState::FilteringContent;
+            m_ulUnicodeCharsRead = 0;
+            m_ChunkPosition = 0;
+        }
+        else
+        {
+            m_fEof = true;
+            m_eState = FilterState::FilteringProperty;
+        }
+        m_ulChunkID = 1;
+    }
+    catch (const std::exception&)
+    {
+        return E_FAIL;
+    }
+
+    return S_OK;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::GetChunk            (IFilter::GetChunk)
+//  Summary:    Gets the next chunk
+//  Arguments:  ppStat
+//                  [out] Pointer to description of current chunk
+//  Returns:    S_OK
+//                  Chunk was successfully retrieved
+//              E_FAIL
+//                  Character conversion failed
+//              FILTER_E_ACCESS
+//                  General access failure occurred
+//              FILTER_E_END_OF_CHUNKS
+//                  Previous chunk was the last chunk
+//              FILTER_E_EMBEDDING_UNAVAILABLE
+//                  (not implemented)
+//              FILTER_E_LINK_UNAVAILABLE
+//                  (not implemented)
+//              FILTER_E_PASSWORD
+//                  (not implemented)
+
+SCODE STDMETHODCALLTYPE COooFilter::GetChunk(STAT_CHUNK * pStat)
+{
+    for(;;)
+    {
+        switch ( m_eState )
+        {
+        case FilterState::FilteringContent:
+        {
+            if( m_ChunkPosition == m_pContentReader ->getChunkBuffer().size() )
+            {
+                m_ulUnicodeBufferLen=0;
+                m_fEof = true;
+            }
+
+            if ( !m_fContents || m_fEof )
+            {
+                m_eState = FilterState::FilteringProperty;
+                continue;
+            }
+            m_pwsBuffer = m_pContentReader -> getChunkBuffer()[m_ChunkPosition].second;
+            m_ulUnicodeBufferLen = static_cast<ULONG>(m_pwsBuffer.length());
+            DWORD ChunkLCID = LocaleSetToLCID( m_pContentReader -> getChunkBuffer()[m_ChunkPosition].first );
+            // Set chunk description
+            pStat->idChunk   = m_ulChunkID;
+            pStat->breakType = CHUNK_NO_BREAK;
+            pStat->flags     = CHUNK_TEXT;
+            pStat->locale    = ChunkLCID;
+            pStat->attribute.guidPropSet       = guidStorage;
+            pStat->attribute.psProperty.ulKind = PRSPEC_PROPID;
+            pStat->attribute.psProperty.propid = PID_STG_CONTENTS;
+            pStat->idChunkSource  = m_ulChunkID;
+            pStat->cwcStartSource = 0;
+            pStat->cwcLenSource   = 0;
+            m_ulUnicodeCharsRead = 0;
+            m_ulChunkID++;
+            m_ChunkPosition++;
+            return S_OK;
+        }
+        case FilterState::FilteringProperty:
+        {
+            if ( m_cAttributes ==  0 )
+                return FILTER_E_END_OF_CHUNKS;
+            while(  !( ( m_pAttributes[m_ulPropertyNum].IsPropertyPropid() ) &&
+                       ( m_pAttributes[m_ulPropertyNum].GetPropSet() == FMTID_SummaryInformation ) )||
+                     ( ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_AUTHOR ) &&
+                       ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_TITLE ) &&
+                       ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_SUBJECT ) &&
+                       ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_KEYWORDS ) &&
+                       ( m_pAttributes[m_ulPropertyNum].GetPropertyPropid() != PIDSI_COMMENTS ) ) )
+            {
+                if ( m_ulPropertyNum <  m_cAttributes )
+                    m_ulPropertyNum++;
+                else
+                    break;
+            }
+            if ( m_ulPropertyNum ==  m_cAttributes)
+                return FILTER_E_END_OF_CHUNKS;
+            else
+            {
+                // Set chunk description
+                pStat->idChunk = m_ulChunkID;
+                pStat->breakType = CHUNK_EOS;
+                pStat->flags = CHUNK_VALUE;
+                pStat->locale = GetSystemDefaultLCID();
+                pStat->attribute.guidPropSet = FMTID_SummaryInformation;
+                pStat->attribute.psProperty.ulKind = PRSPEC_PROPID;
+                pStat->attribute.psProperty.propid = m_pAttributes[m_ulPropertyNum].GetPropertyPropid();
+                pStat->idChunkSource = m_ulChunkID;
+                pStat->cwcStartSource = 0;
+                pStat->cwcLenSource = 0;
+                m_ulCurrentPropertyNum = m_ulPropertyNum;
+                m_ulPropertyNum++;
+                m_ulChunkID++;
+                return S_OK;
+            }
+        }
+        }//switch(...)
+    }//for(;;)
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::GetText             (IFilter::GetText)
+//  Summary:    Retrieves UNICODE text for index
+//  Arguments:  pcwcBuffer
+//                  [in] Pointer to size of UNICODE buffer
+//                  [out] Pointer to count of UNICODE characters returned
+//              awcBuffer
+//                  [out] Pointer to buffer to receive UNICODE text
+//  Returns:    S_OK
+//                  Text successfully retrieved, but text remains in chunk
+//              FILTER_E_NO_MORE_TEXT
+//                  All of the text in the current chunk has been returned
+//              FILTER_S_LAST_TEXT
+//                  Next call to GetText will return FILTER_E_NO_MORE_TEXT
+
+SCODE STDMETHODCALLTYPE COooFilter::GetText(ULONG * pcwcBuffer, WCHAR * awcBuffer)
+{
+    switch ( m_eState )
+    {
+    case FilterState::FilteringProperty:
+        return FILTER_E_NO_TEXT;
+    case FilterState::FilteringContent:
+    {
+        if ( !m_fContents || 0 == m_ulUnicodeBufferLen )
+        {
+            *pcwcBuffer = 0;
+            return FILTER_E_NO_MORE_TEXT;
+        }
+        // Copy UNICODE characters in chunk buffer to output UNICODE buffer
+        ULONG ulToCopy = min( *pcwcBuffer, m_ulUnicodeBufferLen - m_ulUnicodeCharsRead );
+        wmemcpy( awcBuffer, m_pwsBuffer.c_str() + m_ulUnicodeCharsRead, ulToCopy );
+        ZeroMemory(
+             awcBuffer + ulToCopy, (*pcwcBuffer - ulToCopy) * sizeof (WCHAR));
+        m_ulUnicodeCharsRead += ulToCopy;
+        *pcwcBuffer = ulToCopy;
+        if ( m_ulUnicodeBufferLen == m_ulUnicodeCharsRead )
+        {
+            m_ulUnicodeCharsRead = 0;
+            m_ulUnicodeBufferLen = 0;
+            return FILTER_S_LAST_TEXT;
+        }
+        return S_OK;
+    }
+    }
+    return E_FAIL; // Should not happen!
+}
+//M-------------------------------------------------------------------------
+//  Method:     GetMetaInfoNameFromPropertyId
+//  Summary:    helper function to convert PropertyID into respective
+//              MetaInfo names.
+//  Arguments:  ulPropID
+//                  [in] property ID
+//  Returns:    corresponding metainfo names.
+
+
+static ::std::wstring GetMetaInfoNameFromPropertyId( ULONG ulPropID )
+{
+    switch ( ulPropID )
+    {
+        case PIDSI_AUTHOR:   return META_INFO_AUTHOR;
+        case PIDSI_TITLE:    return META_INFO_TITLE;
+        case PIDSI_SUBJECT:  return META_INFO_SUBJECT;
+        case PIDSI_KEYWORDS: return META_INFO_KEYWORDS;
+        case PIDSI_COMMENTS: return META_INFO_DESCRIPTION;
+        default:             return EMPTY_STRING;
+    }
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::GetValue            (IFilter::GetValue)
+//  Summary:    Retrieves properties for index
+//  Arguments:  ppPropValue
+//                  [out] Address that receives pointer to property value
+//  Returns:    FILTER_E_NO_VALUES
+//                  Always
+//              FILTER_E_NO_MORE_VALUES
+//                  (not implemented)
+
+
+SCODE STDMETHODCALLTYPE COooFilter::GetValue(PROPVARIANT ** ppPropValue)
+{
+    if (m_eState == FilterState::FilteringContent)
+        return FILTER_E_NO_VALUES;
+    else // m_eState == FilteringProperty
+    {
+        if ( m_cAttributes == 0 || ( m_ulCurrentPropertyNum == m_ulPropertyNum ) )
+            return FILTER_E_NO_MORE_VALUES;
+        PROPVARIANT *pPropVar = static_cast<PROPVARIANT *>(CoTaskMemAlloc( sizeof (PROPVARIANT) ));
+        if ( pPropVar == nullptr )
+            return E_OUTOFMEMORY;
+        ::std::wstring wsTagName= GetMetaInfoNameFromPropertyId( m_pAttributes[m_ulCurrentPropertyNum].GetPropertyPropid() );
+        if ( wsTagName == EMPTY_STRING )
+            return FILTER_E_NO_VALUES;
+        ::std::wstring wsTagData = m_pMetaInfoReader->getTagData(wsTagName);
+        pPropVar->vt = VT_LPWSTR;
+        size_t cw = wsTagData.length() + 1; // reserve one for the '\0'
+        pPropVar->pwszVal = static_cast<WCHAR*>( CoTaskMemAlloc(cw*sizeof(WCHAR)) );
+        if (pPropVar->pwszVal == nullptr)
+        {
+            CoTaskMemFree(pPropVar);
+            return E_OUTOFMEMORY;
+        }
+        wmemcpy(pPropVar->pwszVal, wsTagData.c_str(), cw);
+        *ppPropValue = pPropVar;
+        m_ulCurrentPropertyNum = m_ulPropertyNum;
+        return S_OK;
+    }
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::BindRegion          (IFilter::BindRegion)
+//  Summary:    Creates moniker or other interface for indicated text
+//  Arguments:  origPos
+//                  [in] Description of text location and extent
+//              riid
+//                  [in] Reference IID of specified interface
+//              ppunk
+//                  [out] Address that receives requested interface pointer
+//  Returns:    E_NOTIMPL
+//                  Always
+//              FILTER_W_REGION_CLIPPED
+//                  (not implemented)
+
+
+SCODE STDMETHODCALLTYPE COooFilter::BindRegion(
+    FILTERREGION /*origPos*/,
+    REFIID /*riid*/,
+    void ** /*ppunk*/)
+{
+    // BindRegion is currently reserved for future use
+    return E_NOTIMPL;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::GetClassID          (IPersist::GetClassID)
+//  Summary:    Retrieves the class id of the filter class
+//  Arguments:  pClassID
+//                  [out] Pointer to the class ID of the filter
+//  Returns:    S_OK
+//                  Always
+//              E_FAIL
+//                  (not implemented)
+
+HRESULT STDMETHODCALLTYPE COooFilter::GetClassID(CLSID * pClassID)
+{
+    *pClassID = CLSID_COooFilter;
+    return S_OK;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::IsDirty             (IPersistFile::IsDirty)
+//  Summary:    Checks whether file has changed since last save
+//  Arguments:  void
+//  Returns:    S_FALSE
+//                  Always
+//              S_OK
+//                  (not implemented)
+
+HRESULT STDMETHODCALLTYPE COooFilter::IsDirty()
+{
+    // File is opened read-only and never changes
+    return S_FALSE;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::Load                (IPersistFile::Load)
+//  Summary:    Opens and initializes the specified file
+//  Arguments:  pszFileName
+//                  [in] Pointer to zero-terminated string
+//                       of absolute path of file to open
+//              dwMode
+//                  [in] Access mode to open the file
+//  Returns:    S_OK
+//                  File was successfully loaded
+//              E_OUTOFMEMORY
+//                  File could not be loaded due to insufficient memory
+//              E_FAIL
+//                  (not implemented)
+
+HRESULT STDMETHODCALLTYPE COooFilter::Load(LPCOLESTR pszFileName, DWORD /*dwMode*/)
+{
+    // Load just sets the filename for GetChunk to read and ignores the mode
+    m_pwszFileName = getShortPathName( pszFileName );
+
+    // Open the file previously specified in call to IPersistFile::Load and get content.
+    try
+    {
+        delete m_pMetaInfoReader;
+        m_pMetaInfoReader = new CMetaInfoReader(m_pwszFileName);
+
+        delete m_pContentReader;
+        m_pContentReader = new CContentReader(m_pwszFileName, m_pMetaInfoReader->getDefaultLocale());
+    }
+    catch (const std::exception&)
+    {
+        return E_FAIL;
+    }
+    return S_OK;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::Save                (IPersistFile::Save)
+//  Summary:    Saves a copy of the current file being filtered
+//  Arguments:  pszFileName
+//                  [in] Pointer to zero-terminated string of
+//                       absolute path of where to save file
+//              fRemember
+//                  [in] Whether the saved copy is made the current file
+//  Returns:    E_FAIL
+//                  Always
+//              S_OK
+//                  (not implemented)
+
+HRESULT STDMETHODCALLTYPE COooFilter::Save(LPCOLESTR /*pszFileName*/, BOOL /*fRemember*/)
+{
+    // File is opened read-only; saving it is an error
+    return E_FAIL;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::SaveCompleted      (IPersistFile::SaveCompleted)
+//  Summary:    Determines whether a file save is completed
+//  Arguments:  pszFileName
+//                  [in] Pointer to zero-terminated string of
+//                       absolute path where file was previously saved
+//  Returns:    S_OK
+//                  Always
+
+HRESULT STDMETHODCALLTYPE COooFilter::SaveCompleted(LPCOLESTR /*pszFileName*/)
+{
+    // File is opened read-only, so "save" is always finished
+    return S_OK;
+}
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::Load      (IPersistStream::Load)
+//  Summary:    Initializes an object from the stream where it was previously saved
+//  Arguments:  pStm
+//                  [in] Pointer to stream from which object should be loaded
+//  Returns:    S_OK
+//              E_OUTOFMEMORY
+//              E_FAIL
+
+HRESULT STDMETHODCALLTYPE COooFilter::Load(IStream *pStm)
+{
+    m_pStream = new BufferStream(pStm);
+    try
+    {
+        delete m_pMetaInfoReader;
+        m_pMetaInfoReader = new CMetaInfoReader(m_pStream);
+
+        delete m_pContentReader;
+        m_pContentReader = new CContentReader(m_pStream, m_pMetaInfoReader->getDefaultLocale());
+    }
+    catch (const std::exception&)
+    {
+        return E_FAIL;
+    }
+    return S_OK;
+}
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::GetSizeMax      (IPersistStream::GetSizeMax)
+//  Summary:    Returns the size in bytes of the stream needed to save the object.
+//  Arguments:  pcbSize
+//                  [out] Pointer to a 64 bit unsigned int indicating the size needed
+//  Returns:    E_NOTIMPL
+
+HRESULT STDMETHODCALLTYPE COooFilter::GetSizeMax(ULARGE_INTEGER * /*pcbSize*/)
+{
+    return E_NOTIMPL;
+}
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::Save      (IPersistStream::Save)
+//  Summary:    Save object to specified stream
+//  Arguments:  pStm
+//                  [in] Pointer to stream
+//              fClearDirty
+//                  [in] Indicates whether to clear dirty flag
+//  Returns:    E_NOTIMPL
+
+HRESULT STDMETHODCALLTYPE COooFilter::Save(IStream * /*pStm*/, BOOL )
+{
+    return E_NOTIMPL;
+}
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilter::GetCurFile          (IPersistFile::GetCurFile)
+//  Summary:    Returns a copy of the current file name
+//  Arguments:  ppszFileName
+//                  [out] Address to receive pointer to zero-terminated
+//                        string for absolute path to current file
+//  Returns:    S_OK
+//                  A valid absolute path was successfully returned
+//              S_FALSE
+//                  (not implemented)
+//              E_OUTOFMEMORY
+//                  Operation failed due to insufficient memory
+//              E_FAIL
+//                  Operation failed due to some reason
+//                  other than insufficient memory
+
+HRESULT STDMETHODCALLTYPE COooFilter::GetCurFile(LPOLESTR * ppszFileName)
+{
+    if ( EMPTY_STRING == m_pwszFileName )
+        return E_FAIL;
+    else
+        *ppszFileName = const_cast<LPWSTR>(m_pwszFileName.c_str());
+    return S_OK;
+}
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilterCF::COooFilterCF
+//  Summary:    Class factory constructor
+//  Arguments:  void
+//  Purpose:    Manages global instance count
+
+COooFilterCF::COooFilterCF() :
+    m_lRefs(1)
+{
+    InterlockedIncrement( &g_lInstances );
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilterCF::~COooFilterCF
+//  Summary:    Class factory destructor
+//  Arguments:  void
+//  Purpose:    Manages global instance count
+
+COooFilterCF::~COooFilterCF()
+{
+   InterlockedDecrement( &g_lInstances );
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilterCF::QueryInterface    (IUnknown::QueryInterface)
+//  Summary:    Queries for requested interface
+//  Arguments:  riid
+//                  [in] Reference IID of requested interface
+//              ppvObject
+//                  [out] Address that receives requested interface pointer
+//  Returns:    S_OK
+//                  Interface is supported
+//              E_NOINTERFACE
+//                  Interface is not supported
+
+HRESULT STDMETHODCALLTYPE COooFilterCF::QueryInterface(REFIID riid, void  ** ppvObject)
+{
+    IUnknown *pUnkTemp;
+
+    if ( IID_IClassFactory == riid )
+        pUnkTemp = this;
+    else if ( IID_IUnknown == riid )
+        pUnkTemp = this;
+    else
+    {
+        *ppvObject = nullptr;
+        return E_NOINTERFACE;
+    }
+    *ppvObject = pUnkTemp;
+    pUnkTemp->AddRef();
+    return S_OK;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilterCF::AddRef            (IUnknown::AddRef)
+//  Summary:    Increments interface refcount
+//  Arguments:  void
+//  Returns:    Value of incremented interface refcount
+
+ULONG STDMETHODCALLTYPE COooFilterCF::AddRef()
+{
+   return InterlockedIncrement( &m_lRefs );
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilterCF::Release           (IUnknown::Release)
+//  Summary:    Decrements interface refcount, deleting if unreferenced
+//  Arguments:  void
+//  Returns:    Value of decremented refcount
+
+ULONG STDMETHODCALLTYPE COooFilterCF::Release()
+{
+    ULONG ulTmp = InterlockedDecrement( &m_lRefs );
+
+    if ( 0 == ulTmp )
+        delete this;
+    return ulTmp;
+}
+//M-------------------------------------------------------------------------
+//  Method:     COooFilterCF::CreateInstance (IClassFactory::CreateInstance)
+//  Summary:    Creates new LibreOffice filter object
+//  Arguments:  pUnkOuter
+//                  [in] Pointer to IUnknown interface of aggregating object
+//              riid
+//                  [in] Reference IID of requested interface
+//              ppvObject
+//                  [out] Address that receives requested interface pointer
+//  Returns:    S_OK
+//                  LibreOffice filter object was successfully created
+//              CLASS_E_NOAGGREGATION
+//                  pUnkOuter parameter was non-NULL
+//              E_NOINTERFACE
+//                  (not implemented)
+//              E_OUTOFMEMORY
+//                  LibreOffice filter object could not be created
+//                  due to insufficient memory
+//              E_UNEXPECTED
+//                  Unsuccessful due to an unexpected condition
+
+HRESULT STDMETHODCALLTYPE COooFilterCF::CreateInstance(
+    IUnknown * pUnkOuter,
+    REFIID riid,
+    void  * * ppvObject)
+{
+    COooFilter *pIUnk = nullptr;
+    if ( nullptr != pUnkOuter )
+        return CLASS_E_NOAGGREGATION;
+    pIUnk = new COooFilter();
+    if ( SUCCEEDED( pIUnk->QueryInterface( riid , ppvObject ) ) )
+    {
+        // Release extra refcount from QueryInterface
+        pIUnk->Release();
+    }
+    else
+    {
+        delete pIUnk;
+        return E_UNEXPECTED;
+    }
+    return S_OK;
+}
+
+//M-------------------------------------------------------------------------
+//  Method:     COooFilterCF::LockServer        (IClassFactory::LockServer)
+//  Summary:    Forces/allows filter class to remain loaded/be unloaded
+//  Arguments:  fLock
+//                  [in] TRUE to lock, FALSE to unlock
+//  Returns:    S_OK
+//                  Always
+//              E_FAIL
+//                  (not implemented)
+//              E_OUTOFMEMORY
+//                  (not implemented)
+//              E_UNEXPECTED
+//                  (not implemented)
+
+HRESULT STDMETHODCALLTYPE COooFilterCF::LockServer(BOOL fLock)
+{
+    if( fLock )
+        InterlockedIncrement( &g_lInstances );
+    else
+        InterlockedDecrement( &g_lInstances );
+    return S_OK;
+}
+//+-------------------------------------------------------------------------
+//  DLL:        ooofilt.dll
+//  Summary:    Implements Dynamic Link Library functions for LibreOffice filter
+
+//F-------------------------------------------------------------------------
+//  Function:   DllMain
+//  Summary:    Called from C-Runtime on process/thread attach/detach
+//  Arguments:  hInstance
+//                  [in] Handle to the DLL
+//              fdwReason
+//                  [in] Reason for calling DLL entry point
+//              lpReserve
+//                  [in] Details of DLL initialization and cleanup
+//  Returns:    TRUE
+//                  Always
+
+extern "C" BOOL WINAPI DllMain(
+    HINSTANCE hInstance,
+    DWORD     fdwReason,
+    LPVOID    /*lpvReserved*/
+)
+{
+    if ( DLL_PROCESS_ATTACH == fdwReason )
+        DisableThreadLibraryCalls( hInstance );
+    return TRUE;
+}
+//F-------------------------------------------------------------------------
+//  Function:   DllGetClassObject
+//  Summary:    Create LibreOffice filter class factory object
+//  Arguments:  cid
+//                  [in] Class ID of class that class factory creates
+//              iid
+//                  [in] Reference IID of requested class factory interface
+//              ppvObj
+//                  [out] Address that receives requested interface pointer
+//  Returns:    S_OK
+//                  Class factory object was created successfully
+//              CLASS_E_CLASSNOTAVAILABLE
+//                  DLL does not support the requested class
+//              E_INVALIDARG
+//                  (not implemented
+//              E_OUTOFMEMORY
+//                  Insufficient memory to create the class factory object
+//              E_UNEXPECTED
+//                  Unsuccessful due to an unexpected condition
+
+extern "C" HRESULT STDMETHODCALLTYPE DllGetClassObject(
+    REFCLSID   cid,
+    REFIID     iid,
+    LPVOID *   ppvObj
+)
+{
+    COooFilterCF* pImpl = nullptr;
+    IUnknown *pResult = nullptr;
+
+    if ( CLSID_COooFilter == cid )
+    {
+        pImpl = new COooFilterCF;
+        pResult = pImpl;
+    }
+    else
+        return CLASS_E_CLASSNOTAVAILABLE;
+    if( SUCCEEDED( pResult->QueryInterface( iid, ppvObj ) ) )
+        // Release extra refcount from QueryInterface
+        pResult->Release();
+    else
+    {
+        delete pImpl;
+        return E_UNEXPECTED;
+    }
+    return S_OK;
+}
+//F-------------------------------------------------------------------------
+//  Function:   DllCanUnloadNow
+//  Summary:    Indicates whether it is possible to unload DLL
+//  Arguments:  void
+//  Returns:    S_OK
+//                  DLL can be unloaded now
+//              S_FALSE
+//                  DLL must remain loaded
+
+extern "C" HRESULT STDMETHODCALLTYPE DllCanUnloadNow()
+{
+    if ( 0 >= g_lInstances )
+        return S_OK;
+    else
+        return S_FALSE;
+}
+//F-------------------------------------------------------------------------
+//  Function:   DllRegisterServer
+//              DllUnregisterServer
+//  Summary:    Registers and unregisters DLL server
+//  Returns:    DllRegisterServer
+//                  S_OK
+//                      Registration was successful
+//                  SELFREG_E_CLASS
+//                      Registration was unsuccessful
+//                  SELFREG_E_TYPELIB
+//                      (not implemented)
+//                  E_OUTOFMEMORY
+//                      (not implemented)
+//                  E_UNEXPECTED
+//                      (not implemented)
+//              DllUnregisterServer
+//                  S_OK
+//                      Unregistration was successful
+//                  S_FALSE
+//                      Unregistration was successful, but other
+//                      entries still exist for the DLL's classes
+//                  SELFREG_E_CLASS
+//                      (not implemented)
+//                  SELFREG_E_TYPELIB
+//                      (not implemented)
+//                  E_OUTOFMEMORY
+//                      (not implemented)
+//                  E_UNEXPECTED
+//                      (not implemented)
+
+STDAPI DllRegisterServer()
+{
+    return S_OK;
+}
+
+
+STDAPI DllUnregisterServer()
+{
+    return S_OK;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */