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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /xmloff/source/core/RDFaExportHelper.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'xmloff/source/core/RDFaExportHelper.cxx')
-rw-r--r--xmloff/source/core/RDFaExportHelper.cxx180
1 files changed, 180 insertions, 0 deletions
diff --git a/xmloff/source/core/RDFaExportHelper.cxx b/xmloff/source/core/RDFaExportHelper.cxx
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+++ b/xmloff/source/core/RDFaExportHelper.cxx
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+/* -*- 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 <RDFaExportHelper.hxx>
+
+#include <xmloff/xmlnamespace.hxx>
+
+#include <xmloff/xmlexp.hxx>
+#include <xmloff/xmltoken.hxx>
+
+#include <comphelper/stl_types.hxx>
+#include <comphelper/processfactory.hxx>
+
+#include <com/sun/star/frame/XModel.hpp>
+#include <com/sun/star/uri/XUriReference.hpp>
+#include <com/sun/star/uri/UriReferenceFactory.hpp>
+#include <com/sun/star/rdf/Statement.hpp>
+#include <com/sun/star/rdf/XLiteral.hpp>
+#include <com/sun/star/rdf/XRepositorySupplier.hpp>
+#include <com/sun/star/rdf/XDocumentRepository.hpp>
+
+#include <rtl/ustrbuf.hxx>
+#include <tools/diagnose_ex.h>
+
+#include <algorithm>
+
+using namespace ::com::sun::star;
+
+namespace xmloff {
+
+static OUString
+makeCURIE(SvXMLExport * i_pExport,
+ uno::Reference<rdf::XURI> const & i_xURI)
+{
+ OSL_ENSURE(i_xURI.is(), "makeCURIE: null URI");
+ if (!i_xURI.is()) throw uno::RuntimeException();
+
+ const OUString Namespace( i_xURI->getNamespace() );
+ OSL_ENSURE(!Namespace.isEmpty(), "makeCURIE: no namespace");
+ if (Namespace.isEmpty()) throw uno::RuntimeException();
+
+ // N.B.: empty LocalName is valid!
+ return i_pExport->EnsureNamespace(Namespace) + ":" + i_xURI->getLocalName();
+}
+
+// #i112473# SvXMLExport::GetRelativeReference() not right for RDF on SaveAs
+// because the URIs in the repository are not rewritten on SaveAs, the
+// URI of the loaded document has to be used, not the URI of the target doc.
+static OUString
+getRelativeReference(SvXMLExport const& rExport, OUString const& rURI)
+{
+ uno::Reference< rdf::XURI > const xModelURI(
+ rExport.GetModel(), uno::UNO_QUERY_THROW );
+ OUString const baseURI( xModelURI->getStringValue() );
+
+ uno::Reference<uno::XComponentContext> xContext( comphelper::getProcessComponentContext() );
+ uno::Reference<uri::XUriReferenceFactory> const xUriFactory =
+ uri::UriReferenceFactory::create( xContext );
+
+ uno::Reference< uri::XUriReference > const xBaseURI(
+ xUriFactory->parse(baseURI), uno::UNO_SET_THROW );
+ uno::Reference< uri::XUriReference > const xAbsoluteURI(
+ xUriFactory->parse(rURI), uno::UNO_SET_THROW );
+ uno::Reference< uri::XUriReference > const xRelativeURI(
+ xUriFactory->makeRelative(xBaseURI, xAbsoluteURI, true, true, false),
+ uno::UNO_SET_THROW );
+ OUString const relativeURI(xRelativeURI->getUriReference());
+
+ return relativeURI;
+}
+
+RDFaExportHelper::RDFaExportHelper(SvXMLExport & i_rExport)
+ : m_rExport(i_rExport), m_Counter(0)
+{
+ const uno::Reference<rdf::XRepositorySupplier> xRS( m_rExport.GetModel(),
+ uno::UNO_QUERY_THROW);
+ m_xRepository.set(xRS->getRDFRepository(), uno::UNO_QUERY_THROW);
+}
+
+OUString
+RDFaExportHelper::LookupBlankNode(
+ uno::Reference<rdf::XBlankNode> const & i_xBlankNode)
+{
+ OSL_ENSURE(i_xBlankNode.is(), "null BlankNode?");
+ if (!i_xBlankNode.is()) throw uno::RuntimeException();
+ OUString & rEntry(
+ m_BlankNodeMap[ i_xBlankNode->getStringValue() ] );
+ if (rEntry.isEmpty())
+ {
+ rEntry = "_:b" + OUString::number(++m_Counter);
+ }
+ return rEntry;
+}
+
+void
+RDFaExportHelper::AddRDFa(
+ uno::Reference<rdf::XMetadatable> const & i_xMetadatable)
+{
+ try
+ {
+ beans::Pair< uno::Sequence<rdf::Statement>, sal_Bool > const
+ RDFaResult( m_xRepository->getStatementRDFa(i_xMetadatable) );
+
+ uno::Sequence<rdf::Statement> const & rStatements( RDFaResult.First );
+
+ if (!rStatements.hasElements())
+ {
+ return; // no RDFa
+ }
+
+ // all stmts have the same subject, so we only handle first one
+ const uno::Reference<rdf::XURI> xSubjectURI(rStatements[0].Subject,
+ uno::UNO_QUERY);
+ const uno::Reference<rdf::XBlankNode> xSubjectBNode(
+ rStatements[0].Subject, uno::UNO_QUERY);
+ if (!xSubjectURI.is() && !xSubjectBNode.is())
+ {
+ throw uno::RuntimeException();
+ }
+ const OUString about( xSubjectURI.is()
+ ? getRelativeReference(m_rExport, xSubjectURI->getStringValue())
+ : "[" + LookupBlankNode(xSubjectBNode) + "]"
+ );
+
+ const uno::Reference<rdf::XLiteral> xContent(
+ rStatements[0].Object, uno::UNO_QUERY_THROW );
+ const uno::Reference<rdf::XURI> xDatatype(xContent->getDatatype());
+ if (xDatatype.is())
+ {
+ const OUString datatype(
+ makeCURIE(&m_rExport, xDatatype) );
+ m_rExport.AddAttribute(XML_NAMESPACE_XHTML,
+ token::XML_DATATYPE, datatype);
+ }
+ if (RDFaResult.Second) // there is xhtml:content
+ {
+ m_rExport.AddAttribute(XML_NAMESPACE_XHTML, token::XML_CONTENT,
+ xContent->getValue());
+ }
+
+ ::std::vector<OUString> curies;
+ for (rdf::Statement const& rStatement : rStatements)
+ {
+ curies.push_back(makeCURIE(&m_rExport, rStatement.Predicate));
+ }
+ OUStringBuffer property;
+ ::comphelper::intersperse(curies.begin(), curies.end(),
+ ::comphelper::OUStringBufferAppender(property),
+ OUString(" "));
+
+ m_rExport.AddAttribute(XML_NAMESPACE_XHTML, token::XML_PROPERTY,
+ property.makeStringAndClear());
+
+ m_rExport.AddAttribute(XML_NAMESPACE_XHTML, token::XML_ABOUT, about);
+ }
+ catch (uno::Exception &)
+ {
+ TOOLS_WARN_EXCEPTION("xmloff.core", "");
+ }
+}
+
+} // namespace xmloff
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */