From ed5640d8b587fbcfed7dd7967f3de04b37a76f26 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 11:06:44 +0200
Subject: Adding upstream version 4:7.4.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 starmath/source/smdetect.cxx | 148 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 starmath/source/smdetect.cxx

(limited to 'starmath/source/smdetect.cxx')

diff --git a/starmath/source/smdetect.cxx b/starmath/source/smdetect.cxx
new file mode 100644
index 000000000..f17ec7864
--- /dev/null
+++ b/starmath/source/smdetect.cxx
@@ -0,0 +1,148 @@
+/* -*- 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 "smdetect.hxx"
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/ucb/ContentCreationException.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <sfx2/docfile.hxx>
+#include <unotools/mediadescriptor.hxx>
+#include <sot/storage.hxx>
+#include <tools/diagnose_ex.h>
+
+#include "eqnolefilehdr.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;
+
+SmFilterDetect::SmFilterDetect()
+{
+}
+
+SmFilterDetect::~SmFilterDetect()
+{
+}
+
+OUString SAL_CALL SmFilterDetect::detect( Sequence< PropertyValue >& lDescriptor )
+{
+    MediaDescriptor aMediaDesc( lDescriptor );
+    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();
+
+    // 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();
+
+    bool bStorageOk = false;
+    try
+    {
+        tools::SvRef<SotStorage> aStorage = new SotStorage( pInStrm, false );
+        bStorageOk = !aStorage->GetError();
+        if (bStorageOk)
+        {
+            if ( aStorage->IsStream("Equation Native") )
+            {
+                sal_uInt8 nVersion;
+                if ( GetMathTypeVersion( aStorage.get(), nVersion ) && nVersion <=3 )
+                    return "math_MathType_3x";
+            }
+        }
+    }
+    catch (const css::ucb::ContentCreationException &)
+    {
+        TOOLS_WARN_EXCEPTION("starmath", "SmFilterDetect::detect caught" );
+    }
+
+    if (!bStorageOk)
+    {
+        // 200 should be enough for the XML
+        // version, encoding and !DOCTYPE
+        // stuff I hope?
+        static const sal_uInt16 nBufferSize = 200;
+        char aBuffer[nBufferSize+1];
+        pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
+        pInStrm->StartReadingUnicodeText( RTL_TEXTENCODING_DONTKNOW ); // avoid BOM marker
+        auto nBytesRead = pInStrm->ReadBytes( aBuffer, nBufferSize );
+        if (nBytesRead >= 6)
+        {
+            aBuffer[nBytesRead] = 0;
+            bool bIsMathType = false;
+            if (0 == strncmp( "<?xml", aBuffer, 5))
+                bIsMathType = (strstr( aBuffer, "<math>" ) ||
+                               strstr( aBuffer, "<math " ) ||
+                               strstr( aBuffer, "<math:math " ));
+            else
+                // this is the old <math tag to MathML in the beginning of the XML file
+                bIsMathType = (0 == strncmp( "<math ", aBuffer, 6) ||
+                               0 == strncmp( "<math> ", aBuffer, 7) ||
+                               0 == strncmp( "<math:math> ", aBuffer, 12));
+
+            if ( bIsMathType )
+                return "math_MathML_XML_Math";
+        }
+    }
+
+    return OUString();
+}
+
+/* XServiceInfo */
+OUString SAL_CALL SmFilterDetect::getImplementationName()
+{
+    return "com.sun.star.comp.math.FormatDetector";
+}
+
+/* XServiceInfo */
+sal_Bool SAL_CALL SmFilterDetect::supportsService( const OUString& sServiceName )
+{
+    return cppu::supportsService(this, sServiceName);
+}
+
+/* XServiceInfo */
+Sequence< OUString > SAL_CALL SmFilterDetect::getSupportedServiceNames()
+{
+    return { "com.sun.star.frame.ExtendedTypeDetection" };
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT uno::XInterface*
+math_FormatDetector_get_implementation(uno::XComponentContext* /*pCtx*/,
+                                       uno::Sequence<uno::Any> const& /*rSeq*/)
+{
+    return cppu::acquire(new SmFilterDetect);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
-- 
cgit v1.2.3