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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_FASTATTRIBS_HXX
#define INCLUDED_SAX_FASTATTRIBS_HXX
#include <com/sun/star/xml/sax/XFastAttributeList.hpp>
#include <com/sun/star/xml/sax/XFastTokenHandler.hpp>
#include <com/sun/star/util/XCloneable.hpp>
#include <cppuhelper/implbase.hxx>
#include <sax/saxdllapi.h>
#include <string_view>
#include <vector>
namespace com::sun::star::xml::sax { class XFastTokenHandler; }
namespace com::sun::star::xml { struct Attribute; }
namespace com::sun::star::xml { struct FastAttribute; }
namespace sax_fastparser
{
struct UnknownAttribute
{
OUString maNamespaceURL;
OString maName;
OString maValue;
UnknownAttribute( OUString sNamespaceURL, OString aName, OString value );
UnknownAttribute( OString sName, OString value );
void FillAttribute( css::xml::Attribute* pAttrib ) const;
};
/// A native C++ interface to tokenisation
class SAX_DLLPUBLIC FastTokenHandlerBase :
public cppu::WeakImplHelper< css::xml::sax::XFastTokenHandler >
{
public:
virtual ~FastTokenHandlerBase();
virtual sal_Int32 getTokenDirect( const char *pToken, sal_Int32 nLength ) const = 0;
/**
* Client method to attempt the use of this interface if possible.
* @xTokenHandler - the token lookup interface
* @pStr - string buffer to lookup
* @nLength - optional length of chars in that buffer
*
* @return Tokenized form of pStr
*/
static sal_Int32 getTokenFromChars(
const FastTokenHandlerBase *pTokenHandler,
const char *pStr, size_t nLength );
};
class SAX_DLLPUBLIC FastAttributeList final : public cppu::WeakImplHelper< css::xml::sax::XFastAttributeList, css::util::XCloneable >
{
public:
FastAttributeList( FastTokenHandlerBase *pTokenHandler );
FastAttributeList( const css::uno::Reference< css::xml::sax::XFastAttributeList > & xAttrList );
virtual ~FastAttributeList() override;
void clear();
void reserve( sal_Int32 nNumTokens )
{
maAttributeValues.reserve(nNumTokens+1);
maAttributeTokens.reserve(nNumTokens);
}
void add( const FastAttributeList& );
void add( const css::uno::Reference<css::xml::sax::XFastAttributeList>& );
void add( sal_Int32 nToken, const char* pValue );
void add( sal_Int32 nToken, const char* pValue, size_t nValueLength );
void add( sal_Int32 nToken, const OString& rValue );
void add( sal_Int32 nToken, std::u16string_view sValue ); // Converts to UTF-8
void addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, const OString& rValue );
void addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, std::u16string_view sValue );
// note: rQName is *namespace-prefixed*
void addUnknown( const OUString& rNamespaceURL, const OString& rQName, const OString& value );
void addUnknown( const OString& rName, const OString& value );
const std::vector< sal_Int32 >& getFastAttributeTokens() const { return maAttributeTokens; }
const char* getFastAttributeValue(size_t nIndex) const { return mpChunk + maAttributeValues[nIndex]; }
sal_Int32 AttributeValueLength(size_t i) const { return maAttributeValues[i + 1] - maAttributeValues[i] - 1; }
size_t size() const { return maAttributeValues.size(); }
// performance sensitive shortcuts to avoid allocation ...
bool getAsInteger( sal_Int32 nToken, sal_Int32 &rInt) const;
bool getAsDouble( sal_Int32 nToken, double &rDouble) const;
bool getAsChar( sal_Int32 nToken, const char*& rPos ) const;
sal_Int32 getAsIntegerByIndex( sal_Int32 nTokenIndex ) const;
const char* getAsCharByIndex( sal_Int32 nTokenIndex ) const;
OUString getValueByIndex( sal_Int32 nTokenIndex ) const;
// XFastAttributeList
virtual sal_Bool SAL_CALL hasAttribute( ::sal_Int32 Token ) override;
virtual ::sal_Int32 SAL_CALL getValueToken( ::sal_Int32 Token ) override;
virtual ::sal_Int32 SAL_CALL getOptionalValueToken( ::sal_Int32 Token, ::sal_Int32 Default ) override;
virtual OUString SAL_CALL getValue( ::sal_Int32 Token ) override;
virtual OUString SAL_CALL getOptionalValue( ::sal_Int32 Token ) override;
virtual css::uno::Sequence< css::xml::Attribute > SAL_CALL getUnknownAttributes( ) override;
virtual css::uno::Sequence< css::xml::FastAttribute > SAL_CALL getFastAttributes() override;
// XCloneable
virtual ::css::uno::Reference< ::css::util::XCloneable > SAL_CALL createClone() override;
sal_Int32 getAttributeIndex( ::sal_Int32 Token )
{
for (size_t i=0; i<maAttributeTokens.size(); ++i)
if (maAttributeTokens[i] == Token)
return i;
return -1;
}
/// Use for fast iteration and conversion of attributes
class FastAttributeIter {
const FastAttributeList &mrList;
size_t mnIdx;
public:
FastAttributeIter(const FastAttributeList &rList, size_t nIdx)
: mrList(rList), mnIdx(nIdx)
{
}
FastAttributeIter& operator++ ()
{
mnIdx++;
return *this;
}
bool operator!=( const FastAttributeIter& rhs ) const
{
return mnIdx != rhs.mnIdx;
}
const FastAttributeIter& operator*() const
{
return *this;
}
sal_Int32 getToken() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return mrList.maAttributeTokens[mnIdx];
}
bool isEmpty() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return mrList.AttributeValueLength(mnIdx) < 1;
}
sal_Int32 toInt32() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return rtl_str_toInt32(mrList.getFastAttributeValue(mnIdx), 10);
}
double toDouble() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return rtl_str_toDouble(mrList.getFastAttributeValue(mnIdx));
}
bool toBoolean() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return rtl_str_toBoolean(mrList.getFastAttributeValue(mnIdx));
}
OUString toString() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return OUString(mrList.getFastAttributeValue(mnIdx),
mrList.AttributeValueLength(mnIdx),
RTL_TEXTENCODING_UTF8);
}
const char* toCString() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return mrList.getFastAttributeValue(mnIdx);
}
sal_Int32 getLength() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return mrList.AttributeValueLength(mnIdx);
}
std::string_view toView() const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return std::string_view(mrList.getFastAttributeValue(mnIdx), mrList.AttributeValueLength(mnIdx));
}
bool isString(const char *str) const
{
assert(mnIdx < mrList.maAttributeTokens.size());
return !strcmp(str, mrList.getFastAttributeValue(mnIdx));
}
};
FastAttributeIter begin() const { return FastAttributeIter(*this, 0); }
FastAttributeIter end() const { return FastAttributeIter(*this, maAttributeTokens.size()); }
FastAttributeIter find( sal_Int32 nToken ) const;
private:
char *mpChunk; ///< buffer to store all attribute values - null terminated strings
sal_Int32 mnChunkLength; ///< size of allocated memory for mpChunk
// maAttributeValues stores pointers, relative to mpChunk, for each attribute value string
// length of the string is maAttributeValues[n+1] - maAttributeValues[n] - 1
// maAttributeValues[0] == 0
std::vector< sal_Int32 > maAttributeValues;
std::vector< sal_Int32 > maAttributeTokens;
std::vector< UnknownAttribute > maUnknownAttributes;
FastTokenHandlerBase * mpTokenHandler;
};
inline FastAttributeList& castToFastAttributeList(
const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttrList )
{
assert( dynamic_cast <FastAttributeList *> ( xAttrList.get() ) != nullptr );
return *static_cast <FastAttributeList *> ( xAttrList.get() );
}
}
#endif
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