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, 171 insertions, 0 deletions

diff --git a/sw/source/ui/uno/swdetect.cxx b/sw/source/ui/uno/swdetect.cxx
new file mode 100644
index 000000000..83b7162ae
--- /dev/null
+++ b/sw/source/ui/uno/swdetect.cxx
@@ -0,0 +1,171 @@
+/* -*- 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 "swdetect.hxx"
+
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <sfx2/docfile.hxx>
+#include <sot/storage.hxx>
+#include <tools/urlobj.hxx>
+#include <unotools/mediadescriptor.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::io;
+using namespace ::com::sun::star::task;
+using namespace ::com::sun::star::beans;
+using namespace ::com::sun::star::lang;
+using utl::MediaDescriptor;
+
+SwFilterDetect::SwFilterDetect()
+{
+}
+
+SwFilterDetect::~SwFilterDetect()
+{
+}
+
+OUString SAL_CALL SwFilterDetect::detect( Sequence< PropertyValue >& lDescriptor )
+{
+    MediaDescriptor aMediaDesc( lDescriptor );
+    OUString aTypeName = aMediaDesc.getUnpackedValueOrDefault( MediaDescriptor::PROP_TYPENAME, OUString() );
+    uno::Reference< io::XInputStream > xInStream ( aMediaDesc[MediaDescriptor::PROP_INPUTSTREAM], uno::UNO_QUERY );
+    if ( !xInStream.is() )
+        return OUString();
+
+    SfxMedium aMedium;
+    aMedium.UseInteractionHandler( false );
+    aMedium.setStreamToLoadFrom( xInStream, true );
+
+    SvStream *pInStrm = aMedium.GetInStream();
+    if ( !pInStrm || pInStrm->GetError() )
+        return OUString();
+
+    bool bIsDetected = false;
+
+    if ( aTypeName == "writer_Rich_Text_Format" )
+    {
+        pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
+        bIsDetected = ( read_uInt8s_ToOString( *pInStrm, 5 ) == "{\\rtf" );
+    }
+    else if ( aTypeName == "writer_MS_WinWord_5" )
+    {
+        pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
+        const sal_uInt8 nBufSize = 3;
+        sal_uInt8 nBuffer[ nBufSize ];
+        if (pInStrm->ReadBytes(nBuffer, nBufSize) < nBufSize)
+            return OUString();
+
+        bIsDetected = (nBuffer[0] == 0x9B && nBuffer[1] == 0xA5 && nBuffer[2] == 0x21)  // WinWord 1
+                   || (nBuffer[0] == 0x9C && nBuffer[1] == 0xA5 && nBuffer[2] == 0x21)  // PMWord 1
+                   || (nBuffer[0] == 0xDB && nBuffer[1] == 0xA5 && nBuffer[2] == 0x2D)  // WinWord 2
+                   || (nBuffer[0] == 0xDC && nBuffer[1] == 0xA5 && nBuffer[2] == 0x65); // WinWord 6.0/95, as a single stream file
+    }
+    else
+    {
+        // Do not attempt to create an SotStorage on a
+        // 0-length stream as that would create the compound
+        // document header on the stream and effectively write to
+        // disk!
+        pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
+        if ( pInStrm->remainingSize() == 0 )
+            return OUString();
+
+        try
+        {
+            tools::SvRef<SotStorage> aStorage = new SotStorage ( pInStrm, false );
+            if ( !aStorage->GetError() )
+            {
+                bIsDetected = aStorage->IsContained( "WordDocument" );
+                if ( bIsDetected && aTypeName.startsWith( "writer_MS_Word_97" ) )
+                {
+                    bIsDetected = ( aStorage->IsContained("0Table") || aStorage->IsContained("1Table") );
+
+                    // If we are checking the template type, and the document is not a .dot, don't
+                    // mis-detect it.
+                    if ( bIsDetected && aTypeName == "writer_MS_Word_97_Vorlage" )
+                    {
+                        // It is common practice to rename a .doc to .dot to make it a template.
+                        // Since we have detected a.doc-ish format, always accept .dot-named-files
+                        // as valid templates to avoid flagging this as an invalid .dot format..
+                        INetURLObject aParser(aMediaDesc.getUnpackedValueOrDefault(
+                            utl::MediaDescriptor::PROP_URL, OUString()));
+
+                        // Super ugly hack, but we don't want to use the whole WW8Fib thing here in
+                        // the swd library, apparently. We know (do we?) that the "aBits1" byte, as
+                        // the variable is called in WW8Fib::WW8Fib(SvStream&,sal_uInt8,sal_uInt32),
+                        // is at offset 10 in the WordDocument stream. The fDot bit is bit 0x01 of
+                        // that byte.
+                        if (aParser.getExtension().toAsciiLowerCase() != "dot")
+                        {
+                            tools::SvRef<SotStorageStream> xWordDocument
+                                = aStorage->OpenSotStream("WordDocument", StreamMode::STD_READ);
+                            xWordDocument->Seek(10);
+                            if (xWordDocument->Tell() == 10)
+                            {
+                                sal_uInt8 aBits1;
+                                xWordDocument->ReadUChar(aBits1);
+                                // Check fDot bit
+                                bIsDetected = ((aBits1 & 0x01) == 0x01);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        catch (...)
+        {
+            bIsDetected = false;
+        }
+    }
+
+    if ( bIsDetected )
+        return aTypeName;
+
+    return OUString();
+}
+
+/* XServiceInfo */
+OUString SAL_CALL SwFilterDetect::getImplementationName()
+{
+    return "com.sun.star.comp.writer.FormatDetector";
+}
+
+/* XServiceInfo */
+sal_Bool SAL_CALL SwFilterDetect::supportsService( const OUString& sServiceName )
+{
+    return cppu::supportsService(this, sServiceName);
+}
+
+/* XServiceInfo */
+Sequence< OUString > SAL_CALL SwFilterDetect::getSupportedServiceNames()
+{
+    return { "com.sun.star.frame.ExtendedTypeDetection", "com.sun.star.text.FormatDetector", "com.sun.star.text.W4WFormatDetector" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_comp_writer_FormatDetector_get_implementation(css::uno::XComponentContext*,
+                                                           css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new SwFilterDetect());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */