3 files changed, 472 insertions, 0 deletions
diff --git a/oox/source/mathml/export.cxx b/oox/source/mathml/export.cxx
new file mode 100644
index 000000000..299373e2f
--- /dev/null
+++ b/oox/source/mathml/export.cxx
@@ -0,0 +1,21 @@
+/* -*- 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/.
+ */
+
+#include <oox/mathml/export.hxx>
+
+namespace oox
+{
+
+FormulaExportBase::FormulaExportBase()
+{
+}
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/oox/source/mathml/import.cxx b/oox/source/mathml/import.cxx
new file mode 100644
index 000000000..bff603d2b
--- /dev/null
+++ b/oox/source/mathml/import.cxx
@@ -0,0 +1,114 @@
+/* -*- 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/.
+ */
+
+#include <oox/mathml/import.hxx>
+
+#include <oox/mathml/importutils.hxx>
+#include <oox/core/contexthandler.hxx>
+#include <oox/token/namespaces.hxx>
+
+#include <drawingml/textparagraph.hxx>
+
+
+using namespace ::com::sun::star;
+
+namespace oox
+{
+
+FormulaImportBase::FormulaImportBase()
+{
+}
+
+namespace formulaimport {
+
+namespace {
+
+class LazyMathBufferingContext : public core::ContextHandler
+{
+private:
+    XmlStreamBuilder & m_rBuilder;
+    std::vector<sal_Int32> m_OpenElements;
+
+public:
+    LazyMathBufferingContext(core::ContextHandler const& rParent,
+            drawingml::TextParagraph & rPara);
+
+    // com.sun.star.xml.sax.XFastContextHandler interface ---------------------
+
+    virtual void SAL_CALL startFastElement(::sal_Int32 Element, const uno::Reference<xml::sax::XFastAttributeList>& xAttribs) override;
+    virtual void SAL_CALL endFastElement(::sal_Int32 Element) override;
+    virtual uno::Reference< xml::sax::XFastContextHandler> SAL_CALL createFastChildContext(::sal_Int32 Element, const uno::Reference<xml::sax::XFastAttributeList >& xAttribs) override;
+    virtual void SAL_CALL characters(const OUString& rChars) override;
+
+};
+
+}
+
+LazyMathBufferingContext::LazyMathBufferingContext(
+        core::ContextHandler const& rParent, drawingml::TextParagraph & rPara)
+    : core::ContextHandler(rParent)
+    , m_rBuilder(rPara.GetMathXml())
+{
+}
+
+void SAL_CALL LazyMathBufferingContext::startFastElement(
+        sal_Int32 const nElement,
+        uno::Reference<xml::sax::XFastAttributeList> const& xAttrs)
+{
+    if (0 < m_OpenElements.size()) // ignore a14:m
+    {   // ignore outer oMathPara
+        if (1 != m_OpenElements.size() || OOX_TOKEN(officeMath, oMathPara) != nElement)
+        {
+            m_rBuilder.appendOpeningTag(nElement, xAttrs);
+        }
+    }
+    m_OpenElements.push_back(nElement);
+}
+
+void SAL_CALL LazyMathBufferingContext::endFastElement(sal_Int32 const nElement)
+{
+    m_OpenElements.pop_back();
+    if (0 < m_OpenElements.size()) // ignore a14:m
+    {   // ignore outer oMathPara
+        if (1 != m_OpenElements.size() || OOX_TOKEN(officeMath, oMathPara) != nElement)
+        {
+            m_rBuilder.appendClosingTag(nElement);
+        }
+    }
+}
+
+uno::Reference<xml::sax::XFastContextHandler> SAL_CALL
+LazyMathBufferingContext::createFastChildContext(sal_Int32 const,
+        uno::Reference<xml::sax::XFastAttributeList> const&)
+{
+    return this;
+}
+
+void SAL_CALL LazyMathBufferingContext::characters(OUString const& rChars)
+{
+    if (0 < m_OpenElements.size()) // ignore a14:m
+    {
+        if (m_OpenElements.back() == OOX_TOKEN(officeMath, t))
+        {
+            m_rBuilder.appendCharacters(rChars);
+        }
+    }
+}
+
+} // namespace oox::formulaimport
+
+rtl::Reference<core::ContextHandler> CreateLazyMathBufferingContext(
+        core::ContextHandler const& rParent, drawingml::TextParagraph & rPara)
+{
+    return new formulaimport::LazyMathBufferingContext(rParent, rPara);
+}
+
+} // namespace oox
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/oox/source/mathml/importutils.cxx b/oox/source/mathml/importutils.cxx
new file mode 100644
index 000000000..d2727d17e
--- /dev/null
+++ b/oox/source/mathml/importutils.cxx
@@ -0,0 +1,337 @@
+/* -*- 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/.
+ */
+
+#include <oox/mathml/importutils.hxx>
+
+#include <assert.h>
+
+#include <com/sun/star/xml/FastAttribute.hpp>
+#include <com/sun/star/xml/sax/XFastAttributeList.hpp>
+#include <oox/token/tokenmap.hxx>
+#include <oox/token/tokens.hxx>
+#include <oox/token/namespaces.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+
+#define OPENING( token ) XML_STREAM_OPENING( token )
+#define CLOSING( token ) XML_STREAM_CLOSING( token )
+
+using namespace com::sun::star;
+
+namespace oox::formulaimport
+{
+
+namespace
+{
+// a class that inherits from AttributeList, builds the internal data and then will be sliced off
+// during conversion to the base class
+class AttributeListBuilder
+    : public XmlStream::AttributeList
+{
+public:
+    explicit AttributeListBuilder( const uno::Reference< xml::sax::XFastAttributeList >& a );
+};
+
+AttributeListBuilder::AttributeListBuilder( const uno::Reference< xml::sax::XFastAttributeList >& a )
+{
+    if( a.get() == nullptr )
+        return;
+    const uno::Sequence< xml::FastAttribute > aFastAttrSeq = a->getFastAttributes();
+    for( const xml::FastAttribute& rFastAttr : aFastAttrSeq )
+    {
+        attrs[ rFastAttr.Token ] = rFastAttr.Value;
+    }
+}
+
+OString tokenToString( int token )
+{
+    uno::Sequence< sal_Int8 > const & aTokenNameSeq = StaticTokenMap::get().getUtf8TokenName( token & TOKEN_MASK );
+    OString tokenname( reinterpret_cast< const char* >( aTokenNameSeq.getConstArray() ), aTokenNameSeq.getLength() );
+    if( tokenname.isEmpty())
+        tokenname = "???";
+    int nmsp = ( token & NMSP_MASK & ~( TAG_OPENING | TAG_CLOSING ));
+#if 0 // this is awfully long
+    OString namespacename = StaticNamespaceMap::get().count( nmsp ) != 0
+        ? StaticNamespaceMap::get()[ nmsp ] : OString( "???" );
+#else
+    OString namespacename;
+    // only few are needed actually
+    switch( nmsp )
+    {
+        case NMSP_officeMath:
+            namespacename = "m";
+            break;
+        case NMSP_doc:
+            namespacename = "w";
+            break;
+        default:
+            namespacename = "?";
+            break;
+    }
+#endif
+    if( token == OPENING( token ))
+        return "<" + namespacename + ":" + tokenname + ">";
+    if( token == CLOSING( token ))
+        return "</" + namespacename + ":" + tokenname + ">";
+    // just the name itself, not specified whether opening or closing
+    return namespacename + ":" + tokenname;
+}
+
+} // namespace
+
+OUString& XmlStream::AttributeList::operator[] (int token)
+{
+    return attrs[token];
+}
+
+OUString XmlStream::AttributeList::attribute( int token, const OUString& def ) const
+{
+    std::map< int, OUString >::const_iterator find = attrs.find( token );
+    if( find != attrs.end())
+        return find->second;
+    return def;
+}
+
+bool XmlStream::AttributeList::attribute( int token, bool def ) const
+{
+    std::map< int, OUString >::const_iterator find = attrs.find( token );
+    if( find != attrs.end())
+    {
+        const OUString sValue = find->second;
+        if( sValue.equalsIgnoreAsciiCase("true") ||
+            sValue.equalsIgnoreAsciiCase("on") ||
+            sValue.equalsIgnoreAsciiCase("t") ||
+            sValue.equalsIgnoreAsciiCase("1") )
+            return true;
+        if( sValue.equalsIgnoreAsciiCase("false") ||
+            sValue.equalsIgnoreAsciiCase("off") ||
+            sValue.equalsIgnoreAsciiCase("f") ||
+            sValue.equalsIgnoreAsciiCase("0") )
+            return false;
+        SAL_WARN( "oox.xmlstream", "Cannot convert \'" << sValue << "\' to bool." );
+    }
+    return def;
+}
+
+sal_Unicode XmlStream::AttributeList::attribute( int token, sal_Unicode def ) const
+{
+    std::map< int, OUString >::const_iterator find = attrs.find( token );
+    if( find != attrs.end())
+    {
+        if( !find->second.isEmpty() )
+        {
+            if( find->second.getLength() != 1 )
+                SAL_WARN( "oox.xmlstream", "Cannot convert \'" << find->second << "\' to sal_Unicode, stripping." );
+            return find->second[ 0 ];
+        }
+    }
+    return def;
+}
+
+XmlStream::Tag::Tag( int t, const uno::Reference< xml::sax::XFastAttributeList >& a )
+: token( t )
+, attributes( AttributeListBuilder( a ))
+{
+}
+
+XmlStream::Tag::Tag( int t, const AttributeList& a )
+: token( t )
+, attributes( a )
+{
+}
+
+XmlStream::Tag::operator bool() const
+{
+    return token != XML_TOKEN_INVALID;
+}
+
+XmlStream::XmlStream()
+: pos( 0 )
+{
+    // make sure our extra bit does not conflict with values used by oox
+    assert( TAG_OPENING > ( 1024 << NMSP_SHIFT ));
+}
+
+bool XmlStream::atEnd() const
+{
+    return pos >= tags.size();
+}
+
+XmlStream::Tag XmlStream::currentTag() const
+{
+    if( pos >= tags.size())
+        return Tag();
+    return tags[ pos ];
+}
+
+int XmlStream::currentToken() const
+{
+    if( pos >= tags.size())
+        return XML_TOKEN_INVALID;
+    return tags[ pos ].token;
+}
+
+void XmlStream::moveToNextTag()
+{
+    if( pos < tags.size())
+        ++pos;
+}
+
+XmlStream::Tag XmlStream::ensureOpeningTag( int token )
+{
+    return checkTag( OPENING( token ), false );
+}
+
+XmlStream::Tag XmlStream::checkOpeningTag( int token )
+{
+    return checkTag( OPENING( token ), true );
+}
+
+void XmlStream::ensureClosingTag( int token )
+{
+    checkTag( CLOSING( token ), false );
+}
+
+XmlStream::Tag XmlStream::checkTag( int token, bool optional )
+{
+    // either it's the following tag, or find it
+    int savedPos = pos;
+    if( optional )
+    { // avoid printing debug messages about skipping tags if the optional one
+      // will not be found and the position will be reset back
+        if( currentToken() != token && !findTagInternal( token, true ))
+        {
+            pos = savedPos;
+            return Tag();
+        }
+    }
+    if( currentToken() == token || findTag( token ))
+    {
+        Tag ret = currentTag();
+        moveToNextTag();
+        return ret; // ok
+    }
+    if( optional )
+    { // not a problem, just rewind
+        pos = savedPos;
+        return Tag();
+    }
+    SAL_WARN( "oox.xmlstream", "Expected tag " << tokenToString( token ) << " not found." );
+    return Tag();
+}
+
+bool XmlStream::findTag( int token )
+{
+    return findTagInternal( token, false );
+}
+
+bool XmlStream::findTagInternal( int token, bool silent )
+{
+    int depth = 0;
+    for(;
+         !atEnd();
+         moveToNextTag())
+    {
+        if( depth > 0 ) // we're inside a nested element, skip those
+        {
+            if( currentToken() == OPENING( currentToken()))
+            {
+                if( !silent )
+                    SAL_INFO( "oox.xmlstream", "Skipping tag " << tokenToString( currentToken()));
+                ++depth;
+            }
+            else if( currentToken() == CLOSING( currentToken()))
+            {
+                if( !silent )
+                    SAL_INFO( "oox.xmlstream", "Skipping tag " << tokenToString( currentToken()));
+                --depth;
+            }
+            else
+            {
+                if( !silent )
+                    SAL_WARN( "oox.xmlstream", "Malformed token " << currentToken() << " ("
+                        << tokenToString( currentToken()) << ")" );
+                abort();
+            }
+            continue;
+        }
+        if( currentToken() == token )
+            return true; // ok, found
+        if( currentToken() == CLOSING( currentToken()))
+            return false; // that would be leaving current element, so not found
+        if( currentToken() == OPENING( currentToken()))
+        {
+            if( !silent )
+                SAL_INFO( "oox.xmlstream", "Skipping tag " << tokenToString( currentToken()));
+            ++depth;
+        }
+        else
+            abort();
+    }
+    if( !silent )
+        SAL_WARN( "oox.xmlstream", "Unexpected end of stream reached." );
+    return false;
+}
+
+void XmlStream::skipElementInternal( int token, bool silent )
+{
+    int closing = ( token & ~TAG_OPENING ) | TAG_CLOSING; // make it a closing tag
+    assert( currentToken() == OPENING( token ));
+    if( !silent )
+        SAL_INFO( "oox.xmlstream", "Skipping unexpected element " << tokenToString( currentToken()));
+    moveToNextTag();
+    // and just find the matching closing tag
+    if( findTag( closing ))
+    {
+        if( !silent )
+            SAL_INFO( "oox.xmlstream", "Skipped unexpected element " << tokenToString( token ));
+        moveToNextTag(); // and skip it too
+        return;
+    }
+    // this one is an unexpected problem, do not silent it
+    SAL_WARN( "oox.xmlstream", "Expected end of element " << tokenToString( token ) << " not found." );
+}
+
+void XmlStream::handleUnexpectedTag()
+{
+    if( atEnd())
+        return;
+    if( currentToken() == CLOSING( currentToken()))
+    {
+        SAL_INFO( "oox.xmlstream", "Skipping unexpected tag " << tokenToString( currentToken()));
+        moveToNextTag(); // just skip it
+        return;
+    }
+    skipElementInternal( currentToken(), false ); // otherwise skip the entire element
+}
+
+void XmlStreamBuilder::appendOpeningTag( int token, const uno::Reference< xml::sax::XFastAttributeList >& attrs )
+{
+    tags.emplace_back( OPENING( token ), attrs );
+}
+
+void XmlStreamBuilder::appendOpeningTag( int token, const AttributeList& attrs )
+{
+    tags.emplace_back( OPENING( token ), attrs );
+}
+
+void XmlStreamBuilder::appendClosingTag( int token )
+{
+    tags.emplace_back( CLOSING( token ));
+}
+
+void XmlStreamBuilder::appendCharacters( const OUString& chars )
+{
+    assert( !tags.empty());
+    tags.back().text += chars;
+}
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */