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, 248 insertions, 0 deletions

diff --git a/sdext/source/pdfimport/tree/style.cxx b/sdext/source/pdfimport/tree/style.cxx
new file mode 100644
index 000000000..b1cb02a48
--- /dev/null
+++ b/sdext/source/pdfimport/tree/style.cxx
@@ -0,0 +1,248 @@
+/* -*- 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 "style.hxx"
+#include <genericelements.hxx>
+#include <xmlemitter.hxx>
+#include <rtl/ustrbuf.hxx>
+
+#include <algorithm>
+#include <string_view>
+
+using namespace pdfi;
+
+
+StyleContainer::StyleContainer() :
+    m_nNextId( 1 )
+{
+}
+
+sal_Int32 StyleContainer::impl_getStyleId( const Style& rStyle, bool bSubStyle )
+{
+    sal_Int32 nRet = -1;
+
+    // construct HashedStyle to find or insert
+    HashedStyle aSearchStyle;
+    aSearchStyle.Name                   = rStyle.Name;
+    aSearchStyle.Properties             = rStyle.Properties;
+    aSearchStyle.Contents               = rStyle.Contents;
+    aSearchStyle.ContainedElement       = rStyle.ContainedElement;
+    for(Style* pSubStyle : rStyle.SubStyles)
+        aSearchStyle.SubStyles.push_back( impl_getStyleId( *pSubStyle, true ) );
+
+    std::unordered_map< HashedStyle, sal_Int32, StyleHash >::iterator it =
+        m_aStyleToId.find( aSearchStyle );
+
+    if( it != m_aStyleToId.end() )
+    {
+        nRet = it->second;
+        RefCountedHashedStyle& rFound = m_aIdToStyle[ nRet ];
+        // increase refcount on this style
+        rFound.RefCount++;
+        if( ! bSubStyle )
+            rFound.style.IsSubStyle = false;
+    }
+    else
+    {
+        nRet = m_nNextId++;
+        // create new style
+        RefCountedHashedStyle& rNew = m_aIdToStyle[ nRet ];
+        rNew.style = aSearchStyle;
+        rNew.RefCount           = 1;
+        rNew.style.IsSubStyle         = bSubStyle;
+        // fill the style hash to find the id
+        m_aStyleToId[ rNew.style ] = nRet;
+    }
+    return nRet;
+}
+
+sal_Int32 StyleContainer::getStandardStyleId( std::string_view rName )
+{
+    PropertyMap aProps;
+    aProps[ "style:family" ] = OStringToOUString( rName, RTL_TEXTENCODING_UTF8 );
+    aProps[ "style:name" ] = "standard";
+
+    Style aStyle( "style:style", std::move(aProps) );
+    return getStyleId( aStyle );
+}
+
+const PropertyMap* StyleContainer::getProperties( sal_Int32 nStyleId ) const
+{
+    std::unordered_map< sal_Int32, RefCountedHashedStyle >::const_iterator it =
+        m_aIdToStyle.find( nStyleId );
+    return it != m_aIdToStyle.end() ? &(it->second.style.Properties) : nullptr;
+}
+
+sal_Int32 StyleContainer::setProperties( sal_Int32 nStyleId, PropertyMap&& rNewProps )
+{
+    sal_Int32 nRet = -1;
+    std::unordered_map< sal_Int32, RefCountedHashedStyle >::iterator it =
+        m_aIdToStyle.find( nStyleId );
+    if( it != m_aIdToStyle.end() )
+    {
+        if( it->second.RefCount == 1 )
+        {
+            nRet = it->first;
+            // erase old hash to id mapping
+            m_aStyleToId.erase( it->second.style );
+            // change properties
+            it->second.style.Properties = std::move(rNewProps);
+            // fill in new hash to id mapping
+            m_aStyleToId[ it->second.style ] = nRet;
+        }
+        else
+        {
+            // decrease refcount on old instance
+            it->second.RefCount--;
+            // acquire new HashedStyle
+            HashedStyle aSearchStyle;
+            aSearchStyle.Name                   = it->second.style.Name;
+            aSearchStyle.Properties             = std::move(rNewProps);
+            aSearchStyle.Contents               = it->second.style.Contents;
+            aSearchStyle.ContainedElement       = it->second.style.ContainedElement;
+            aSearchStyle.SubStyles              = it->second.style.SubStyles;
+            aSearchStyle.IsSubStyle             = it->second.style.IsSubStyle;
+
+            // find out whether this new style already exists
+            std::unordered_map< HashedStyle, sal_Int32, StyleHash >::iterator new_it =
+                m_aStyleToId.find( aSearchStyle );
+            if( new_it != m_aStyleToId.end() )
+            {
+                nRet = new_it->second;
+                m_aIdToStyle[ nRet ].RefCount++;
+            }
+            else
+            {
+                nRet = m_nNextId++;
+                // create new style with new id
+                RefCountedHashedStyle& rNew = m_aIdToStyle[ nRet ];
+                rNew.style = aSearchStyle;
+                rNew.RefCount = 1;
+                // fill style to id hash
+                m_aStyleToId[ aSearchStyle ] = nRet;
+            }
+        }
+    }
+    return nRet;
+}
+
+OUString StyleContainer::getStyleName( sal_Int32 nStyle ) const
+{
+    OUStringBuffer aRet( 64 );
+
+    std::unordered_map< sal_Int32, RefCountedHashedStyle >::const_iterator style_it =
+        m_aIdToStyle.find( nStyle );
+    if( style_it != m_aIdToStyle.end() )
+    {
+        const HashedStyle& rStyle = style_it->second.style;
+
+        PropertyMap::const_iterator name_it = rStyle.Properties.find( "style:name" );
+        if( name_it != rStyle.Properties.end() )
+            aRet.append( name_it->second );
+        else
+        {
+            PropertyMap::const_iterator fam_it = rStyle.Properties.find( "style:family" );
+            OUString aStyleName;
+            if( fam_it != rStyle.Properties.end() )
+            {
+                aStyleName = fam_it->second;
+            }
+            else
+                aStyleName = OStringToOUString( rStyle.Name, RTL_TEXTENCODING_ASCII_US );
+            sal_Int32 nIndex = aStyleName.lastIndexOf( ':' );
+            aRet.append( aStyleName.subView(nIndex+1) );
+            aRet.append( nStyle );
+        }
+    }
+    else
+    {
+        aRet.append( "invalid style id " );
+        aRet.append( nStyle );
+    }
+
+    return aRet.makeStringAndClear();
+}
+
+void StyleContainer::impl_emitStyle( sal_Int32           nStyleId,
+                                     EmitContext&        rContext,
+                                     ElementTreeVisitor& rContainedElemVisitor )
+{
+    std::unordered_map< sal_Int32, RefCountedHashedStyle >::const_iterator it = m_aIdToStyle.find( nStyleId );
+    if( it == m_aIdToStyle.end() )
+        return;
+
+    const HashedStyle& rStyle = it->second.style;
+    PropertyMap aProps( rStyle.Properties );
+    if( !rStyle.IsSubStyle )
+        aProps[ "style:name" ] = getStyleName( nStyleId );
+    if (rStyle.Name == "draw:stroke-dash")
+        aProps[ "draw:name" ] = aProps[ "style:name" ];
+    rContext.rEmitter.beginTag( rStyle.Name.getStr(), aProps );
+
+    for(sal_Int32 nSubStyle : rStyle.SubStyles)
+        impl_emitStyle( nSubStyle, rContext, rContainedElemVisitor );
+    if( !rStyle.Contents.isEmpty() )
+        rContext.rEmitter.write( rStyle.Contents );
+    if( rStyle.ContainedElement )
+        rStyle.ContainedElement->visitedBy( rContainedElemVisitor,
+                                            std::list<std::unique_ptr<Element>>::iterator() );
+    rContext.rEmitter.endTag( rStyle.Name.getStr() );
+}
+
+void StyleContainer::emit( EmitContext&        rContext,
+                           ElementTreeVisitor& rContainedElemVisitor )
+{
+    std::vector< sal_Int32 > aMasterPageSection, aAutomaticStyleSection, aOfficeStyleSection;
+    for( const auto& rEntry : m_aIdToStyle )
+    {
+        if( ! rEntry.second.style.IsSubStyle )
+        {
+            if( rEntry.second.style.Name == "style:master-page" )
+                aMasterPageSection.push_back( rEntry.first );
+            else if( getStyleName( rEntry.first ) == "standard" )
+                aOfficeStyleSection.push_back( rEntry.first );
+            else
+                aAutomaticStyleSection.push_back( rEntry.first );
+        }
+    }
+
+    if( ! aMasterPageSection.empty() )
+        std::stable_sort( aMasterPageSection.begin(), aMasterPageSection.end(), StyleIdNameSort(&m_aIdToStyle) );
+    if( ! aAutomaticStyleSection.empty() )
+        std::stable_sort( aAutomaticStyleSection.begin(), aAutomaticStyleSection.end(), StyleIdNameSort(&m_aIdToStyle) );
+    if( ! aOfficeStyleSection.empty() )
+        std::stable_sort( aOfficeStyleSection.begin(), aOfficeStyleSection.end(), StyleIdNameSort(&m_aIdToStyle) );
+
+    int n = 0, nElements = 0;
+    rContext.rEmitter.beginTag( "office:styles", PropertyMap() );
+    for( n = 0, nElements = aOfficeStyleSection.size(); n < nElements; n++ )
+        impl_emitStyle( aOfficeStyleSection[n], rContext, rContainedElemVisitor );
+    rContext.rEmitter.endTag( "office:styles" );
+    rContext.rEmitter.beginTag( "office:automatic-styles", PropertyMap() );
+    for( n = 0, nElements = aAutomaticStyleSection.size(); n < nElements; n++ )
+        impl_emitStyle( aAutomaticStyleSection[n], rContext, rContainedElemVisitor );
+    rContext.rEmitter.endTag( "office:automatic-styles" );
+    rContext.rEmitter.beginTag( "office:master-styles", PropertyMap() );
+    for( n = 0, nElements = aMasterPageSection.size(); n < nElements; n++ )
+        impl_emitStyle( aMasterPageSection[n], rContext, rContainedElemVisitor );
+    rContext.rEmitter.endTag( "office:master-styles" );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */