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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 <sal/config.h>
#include <com/sun/star/graphic/XSvgParser.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <comphelper/processfactory.hxx>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/xml/sax/XParser.hpp>
#include <com/sun/star/xml/sax/Parser.hpp>
#include <com/sun/star/xml/sax/InputSource.hpp>
#include <svgdocumenthandler.hxx>
#include <comphelper/diagnose_ex.hxx>
#include <rtl/ref.hxx>
#include <tools/stream.hxx>
#include <unotools/streamwrap.hxx>
#include <svgvisitor.hxx>
#include <utility>
using namespace ::com::sun::star;
namespace svgio::svgreader
{
namespace {
class XSvgParser : public ::cppu::WeakImplHelper< graphic::XSvgParser, lang::XServiceInfo >
{
private:
std::shared_ptr<SvgDrawVisitor> mpVisitor;
uno::Reference< uno::XComponentContext > context_;
bool parseSvgXML(uno::Reference<io::XInputStream> const & xSVGStream,
uno::Reference<xml::sax::XDocumentHandler> const & xSvgDocHdl);
public:
explicit XSvgParser(
uno::Reference< uno::XComponentContext > context);
XSvgParser(const XSvgParser&) = delete;
XSvgParser& operator=(const XSvgParser&) = delete;
// XSvgParser
virtual uno::Sequence< uno::Reference< ::graphic::XPrimitive2D > > SAL_CALL getDecomposition(
const uno::Reference< ::io::XInputStream >& xSVGStream,
const OUString& aAbsolutePath) override;
virtual uno::Any SAL_CALL getDrawCommands(
uno::Reference<io::XInputStream> const & xSvgStream,
const OUString& aAbsolutePath) override;
// XServiceInfo
virtual OUString SAL_CALL getImplementationName() override;
virtual sal_Bool SAL_CALL supportsService(const OUString&) override;
virtual uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
};
}
XSvgParser::XSvgParser(
uno::Reference< uno::XComponentContext > context):
context_(std::move(context))
{
}
bool XSvgParser::parseSvgXML(uno::Reference<io::XInputStream> const & xSVGStream, uno::Reference<xml::sax::XDocumentHandler> const & xSvgDocHdl)
{
try
{
// prepare ParserInputSource
xml::sax::InputSource myInputSource;
myInputSource.aInputStream = xSVGStream;
// get parser
uno::Reference< xml::sax::XParser > xParser(
xml::sax::Parser::create(context_));
// fdo#60471 need to enable internal entities because
// certain ... popular proprietary products write SVG files
// that use entities to define XML namespaces.
uno::Reference<lang::XInitialization> const xInit(xParser,
uno::UNO_QUERY_THROW);
uno::Sequence<uno::Any> args{ uno::Any(OUString("DoSmeplease")) };
xInit->initialize(args);
// connect parser and filter
xParser->setDocumentHandler(xSvgDocHdl);
// finally, parse the stream to a hierarchy of
// SVGGraphicPrimitive2D which will be embedded to the
// primitive sequence. Their decompositions will in the
// end create local low-level primitives, thus SVG will
// be processable from all our processors
xParser->parseStream(myInputSource);
}
catch(const uno::Exception&)
{
TOOLS_INFO_EXCEPTION( "svg", "Parse error");
return false;
}
return true;
}
uno::Sequence< uno::Reference< ::graphic::XPrimitive2D > > XSvgParser::getDecomposition(
const uno::Reference< ::io::XInputStream >& xSVGStream,
const OUString& aAbsolutePath )
{
drawinglayer::primitive2d::Primitive2DContainer aRetval;
if(xSVGStream.is())
{
// local document handler
rtl::Reference<SvgDocHdl> pSvgDocHdl = new SvgDocHdl(aAbsolutePath);
parseSvgXML(xSVGStream, pSvgDocHdl);
// decompose to primitives
for(std::unique_ptr<SvgNode> const & pCandidate : pSvgDocHdl->getSvgDocument().getSvgNodeVector())
{
if (Display::None != pCandidate->getDisplay())
{
pCandidate->decomposeSvgNode(aRetval, false);
}
}
}
else
{
OSL_ENSURE(false, "Invalid stream (!)");
}
return aRetval.toSequence();
}
uno::Any SAL_CALL XSvgParser::getDrawCommands(
uno::Reference<io::XInputStream> const & xSvgStream,
const OUString& aAbsolutePath)
{
uno::Any aAnyResult;
if (!xSvgStream.is())
return aAnyResult;
rtl::Reference<SvgDocHdl> pSvgDocHdl = new SvgDocHdl(aAbsolutePath);
parseSvgXML(xSvgStream, pSvgDocHdl);
// decompose to primitives
for (std::unique_ptr<SvgNode> const & pCandidate : pSvgDocHdl->getSvgDocument().getSvgNodeVector())
{
if (Display::None != pCandidate->getDisplay())
{
mpVisitor = std::make_shared<SvgDrawVisitor>();
pCandidate->accept(*mpVisitor);
std::shared_ptr<gfx::DrawRoot> pDrawRoot(mpVisitor->getDrawRoot());
sal_uInt64 nPointer = reinterpret_cast<sal_uInt64>(pDrawRoot.get());
aAnyResult <<= sal_uInt64(nPointer);
}
}
return aAnyResult;
}
OUString SAL_CALL XSvgParser::getImplementationName()
{
return "svgio::svgreader::XSvgParser";
}
sal_Bool SAL_CALL XSvgParser::supportsService(const OUString& rServiceName)
{
return cppu::supportsService(this, rServiceName);
}
uno::Sequence< OUString > SAL_CALL XSvgParser::getSupportedServiceNames()
{
return { "com.sun.star.graphic.SvgTools" };
}
} // end of namespace svgio::svgreader
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
svgio_XSvgParser_get_implementation(
css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const&)
{
return cppu::acquire(new svgio::svgreader::XSvgParser(context));
}
extern "C" bool TestImportSVG(SvStream& rStream)
{
css::uno::Reference<css::io::XInputStream> xStream(new utl::OInputStreamWrapper(rStream));
rtl::Reference<svgio::svgreader::XSvgParser> xSvgParser(new svgio::svgreader::XSvgParser(comphelper::getProcessComponentContext()));
return xSvgParser->getDecomposition(xStream, OUString()).getLength() != 0;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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