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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 .
*/
#ifndef INCLUDED_SAX_FSHELPER_HXX
#define INCLUDED_SAX_FSHELPER_HXX
#include <com/sun/star/xml/sax/XFastAttributeList.hpp>
#include <com/sun/star/uno/Reference.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <rtl/ustring.hxx>
#include <rtl/ref.hxx>
#include <sax/saxdllapi.h>
#include <optional>
#include <memory>
#include <string_view>
#include <utility>
namespace com::sun::star::io { class XOutputStream; }
namespace sax_fastparser { class FastAttributeList; }
constexpr sal_Int32 FSNS(sal_Int32 namespc, sal_Int32 element) { return (namespc << 16) | element; }
namespace sax_fastparser {
enum class MergeMarks { APPEND = 0, PREPEND = 1, POSTPONE = 2};
class FastSaxSerializer;
class SAX_DLLPUBLIC FastSerializerHelper
{
public:
FastSerializerHelper( const css::uno::Reference< css::io::XOutputStream >& xOutputStream, bool bWriteHeader );
~FastSerializerHelper();
/// Start an element. After the first argument there can be a number of (attribute, value) pairs.
template<typename... Args>
void startElement(sal_Int32 elementTokenId, sal_Int32 attribute, const char* value, Args &&... args)
{
if (value)
pushAttributeValue(attribute, value);
startElement(elementTokenId, std::forward<Args>(args)...);
}
template<typename... Args>
void startElement(sal_Int32 elementTokenId, sal_Int32 attribute,
const std::optional<OString>& value, Args&&... args)
{
if (value)
pushAttributeValue(attribute, *value);
startElement(elementTokenId, std::forward<Args>(args)...);
}
template<typename... Args>
void startElement(sal_Int32 elementTokenId, sal_Int32 attribute,
const std::optional<OUString>& value, Args&&... args)
{
std::optional<OString> opt;
if (value)
opt = value->toUtf8();
startElement(elementTokenId, attribute, opt, std::forward<Args>(args)...);
}
void startElement(sal_Int32 elementTokenId);
/// Start an element. After the first two arguments there can be a number of (attribute, value) pairs.
template<typename... Args>
void startElementNS(sal_Int32 namespaceTokenId, sal_Int32 elementTokenId, Args &&... args)
{
startElement(FSNS(namespaceTokenId, elementTokenId), std::forward<Args>(args)...);
}
/// Create a single element. After the first argument there can be a number of (attribute, value) pairs.
template<typename... Args>
void singleElement(sal_Int32 elementTokenId, sal_Int32 attribute, const char* value, Args &&... args)
{
if (value)
pushAttributeValue(attribute, value);
singleElement(elementTokenId, std::forward<Args>(args)...);
}
template<typename... Args>
void singleElement(sal_Int32 elementTokenId, sal_Int32 attribute,
const std::optional<OString>& value, Args&&... args)
{
if (value)
pushAttributeValue(attribute, *value);
singleElement(elementTokenId, std::forward<Args>(args)...);
}
template<typename... Args>
void singleElement(sal_Int32 elementTokenId, sal_Int32 attribute,
const std::optional<OUString>& value, Args&&... args)
{
std::optional<OString> opt;
if (value)
opt = value->toUtf8();
singleElement(elementTokenId, attribute, opt, std::forward<Args>(args)...);
}
void singleElement(sal_Int32 elementTokenId);
/// Create a single element. After the first two arguments there can be a number of (attribute, value) pairs.
template<typename... Args>
void singleElementNS(sal_Int32 namespaceTokenId, sal_Int32 elementTokenId, Args &&... args)
{
singleElement(FSNS(namespaceTokenId, elementTokenId), std::forward<Args>(args)...);
}
void endElement(sal_Int32 elementTokenId);
void endElementNS(sal_Int32 namespaceTokenId, sal_Int32 elementTokenId)
{ endElement( FSNS( namespaceTokenId, elementTokenId ) ); }
void singleElement(sal_Int32 elementTokenId, const rtl::Reference<FastAttributeList>& xAttrList);
void singleElementNS(sal_Int32 namespaceTokenId, sal_Int32 elementTokenId, rtl::Reference<FastAttributeList> const & xAttrList)
{ singleElement(FSNS( namespaceTokenId, elementTokenId), xAttrList); }
void startElement(sal_Int32 elementTokenId, const rtl::Reference<FastAttributeList>& xAttrList);
void startElementNS(sal_Int32 namespaceTokenId, sal_Int32 elementTokenId, rtl::Reference<FastAttributeList> const & xAttrList)
{ startElement( FSNS( namespaceTokenId, elementTokenId ), xAttrList ); }
FastSerializerHelper* write(const char* value);
FastSerializerHelper* write(const OString& value);
FastSerializerHelper* write(std::u16string_view value);
FastSerializerHelper* write(sal_Int32 value);
FastSerializerHelper* write(sal_Int64 value);
FastSerializerHelper* write(double value);
FastSerializerHelper* writeEscaped(const char* value);
FastSerializerHelper* writeEscaped(std::u16string_view value);
FastSerializerHelper* writeId(sal_Int32 tokenId);
css::uno::Reference< css::io::XOutputStream > const & getOutputStream() const;
static rtl::Reference<FastAttributeList> createAttrList();
void mark(sal_Int32 nTag,
const css::uno::Sequence< sal_Int32 >& rOrder =
css::uno::Sequence< sal_Int32 >() );
void mergeTopMarks(sal_Int32 nTag,
MergeMarks eMergeType = MergeMarks::APPEND );
private:
void pushAttributeValue( sal_Int32 attribute, const char* value );
void pushAttributeValue( sal_Int32 attribute, const OString& value );
FastSaxSerializer* mpSerializer;
};
typedef std::shared_ptr< FastSerializerHelper > FSHelperPtr;
// Helpers to make intention to pass optional attributes to *Element functions explicit, instead of
// using `(condition) ? value.toUtf8().getStr() : nullptr` syntax.
inline const char* UseIf(const char* s, bool bUse) { return bUse ? s : nullptr; }
// OString, OUString
template<class TString>
std::optional<TString> UseIf(const TString& s, bool bUse)
{
return bUse ? std::optional<TString>(s) : std::optional<TString>();
}
}
#endif // INCLUDED_SAX_FSHELPER_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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