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path: root/sax/source/tools/fastattribs.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 <algorithm>

#include <sax/fastattribs.hxx>

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::xml;
using namespace ::com::sun::star::xml::sax;
namespace sax_fastparser
{

// wasteage to keep MSVC happy vs. an in-line {}
FastTokenHandlerBase::~FastTokenHandlerBase()
{
}

UnknownAttribute::UnknownAttribute( const OUString& rNamespaceURL, const OString& rName, const sal_Char* pValue )
    : maNamespaceURL( rNamespaceURL ), maName( rName ), maValue( pValue )
{
}

UnknownAttribute::UnknownAttribute( const OString& rName, const sal_Char* pValue )
    : maName( rName ), maValue( pValue )
{
}

void UnknownAttribute::FillAttribute( Attribute* pAttrib ) const
{
    if( pAttrib )
    {
        pAttrib->Name = OUString::fromUtf8( maName );
        pAttrib->NamespaceURL = maNamespaceURL;
        pAttrib->Value = OUString::fromUtf8( maValue );
    }
}

FastAttributeList::FastAttributeList( const ::com::sun::star::uno::Reference< ::com::sun::star::xml::sax::XFastTokenHandler >& xTokenHandler,
                                      sax_fastparser::FastTokenHandlerBase *pTokenHandler)
: mxTokenHandler( xTokenHandler ),
  mpTokenHandler( pTokenHandler )
{
    // random initial size of buffer to store attribute values
    mnChunkLength = 58;
    mpChunk = (sal_Char *) malloc( mnChunkLength );
    maAttributeValues.push_back( 0 );
}

FastAttributeList::~FastAttributeList()
{
    free( mpChunk );
}

void FastAttributeList::clear()
{
    maAttributeTokens.clear();
    maAttributeValues.clear();
    maAttributeValues.push_back( 0 );
    maUnknownAttributes.clear();
}

void FastAttributeList::add( sal_Int32 nToken, const sal_Char* pValue, size_t nValueLength )
{
    maAttributeTokens.push_back( nToken );
    if (nValueLength == 0)
        nValueLength = strlen(pValue);
    sal_Int32 nWritePosition = maAttributeValues.back();
    maAttributeValues.push_back( maAttributeValues.back() + nValueLength + 1 );
    if (maAttributeValues.back() > mnChunkLength)
    {
        mnChunkLength = maAttributeValues.back();
        mpChunk = (sal_Char *) realloc( mpChunk, mnChunkLength );
    }
    strncpy(mpChunk + nWritePosition, pValue, nValueLength);
    mpChunk[nWritePosition + nValueLength] = '\0';
}

void FastAttributeList::add( sal_Int32 nToken, const OString& rValue )
{
    add( nToken, rValue.getStr(), rValue.getLength() );
}

void FastAttributeList::addNS( sal_Int32 nNamespaceToken, sal_Int32 nToken, const OString& rValue )
{
    sal_Int32 nCombinedToken = (nNamespaceToken << 16) | nToken;
    add( nCombinedToken, rValue );
}

void FastAttributeList::addUnknown( const OUString& rNamespaceURL, const OString& rName, const sal_Char* pValue )
{
    maUnknownAttributes.push_back( UnknownAttribute( rNamespaceURL, rName, pValue ) );
}

void FastAttributeList::addUnknown( const OString& rName, const sal_Char* pValue )
{
    maUnknownAttributes.push_back( UnknownAttribute( rName, pValue ) );
}

// XFastAttributeList
sal_Bool FastAttributeList::hasAttribute( ::sal_Int32 Token ) throw (RuntimeException, std::exception)
{
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
        if (maAttributeTokens[i] == Token)
            return sal_True;

    return sal_False;
}

sal_Int32 FastAttributeList::getValueToken( ::sal_Int32 Token ) throw (SAXException, RuntimeException, std::exception)
{
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
        if (maAttributeTokens[i] == Token)
            return FastTokenHandlerBase::getTokenFromChars(
                       mxTokenHandler, mpTokenHandler,
                       getFastAttributeValue(i),
                       AttributeValueLength( i ) );

    throw SAXException();
}

sal_Int32 FastAttributeList::getOptionalValueToken( ::sal_Int32 Token, ::sal_Int32 Default ) throw (RuntimeException, std::exception)
{
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
        if (maAttributeTokens[i] == Token)
            return FastTokenHandlerBase::getTokenFromChars(
                       mxTokenHandler, mpTokenHandler,
                       getFastAttributeValue(i),
                       AttributeValueLength( i ) );

    return Default;
}

// performance sensitive shortcuts to avoid allocation ...
bool FastAttributeList::getAsInteger( sal_Int32 nToken, sal_Int32 &rInt)
{
    rInt = 0;
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
        if (maAttributeTokens[i] == nToken)
        {
            rInt = rtl_str_toInt32( getFastAttributeValue(i), 10 );
            return true;
        }
    return false;
}

bool FastAttributeList::getAsDouble( sal_Int32 nToken, double &rDouble)
{
    rDouble = 0.0;
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
        if (maAttributeTokens[i] == nToken)
        {
            rDouble = rtl_str_toDouble( getFastAttributeValue(i) );
            return true;
        }
    return false;
}

bool FastAttributeList::getAsChar( sal_Int32 nToken, const char*& rPos ) const
{
    for (size_t i = 0, n = maAttributeTokens.size(); i < n; ++i)
    {
        if (maAttributeTokens[i] != nToken)
            continue;

        sal_Int32 nOffset = maAttributeValues[i];
        rPos = mpChunk + nOffset;
        return true;
    }

    return false;
}

OUString FastAttributeList::getValue( ::sal_Int32 Token ) throw (SAXException, RuntimeException, std::exception)
{
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
        if (maAttributeTokens[i] == Token)
            return OUString( getFastAttributeValue(i), AttributeValueLength(i), RTL_TEXTENCODING_UTF8 );

    throw SAXException();
}

OUString FastAttributeList::getOptionalValue( ::sal_Int32 Token ) throw (RuntimeException, std::exception)
{
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
        if (maAttributeTokens[i] == Token)
            return OUString( getFastAttributeValue(i), AttributeValueLength(i), RTL_TEXTENCODING_UTF8 );

    return OUString();
}
Sequence< Attribute > FastAttributeList::getUnknownAttributes(  ) throw (RuntimeException, std::exception)
{
    Sequence< Attribute > aSeq( maUnknownAttributes.size() );
    Attribute* pAttr = aSeq.getArray();
    for( UnknownAttributeList::iterator attrIter = maUnknownAttributes.begin(); attrIter != maUnknownAttributes.end(); ++attrIter )
        (*attrIter).FillAttribute( pAttr++ );
    return aSeq;
}
Sequence< FastAttribute > FastAttributeList::getFastAttributes(  ) throw (RuntimeException, std::exception)
{
    Sequence< FastAttribute > aSeq( maAttributeTokens.size() );
    FastAttribute* pAttr = aSeq.getArray();
    for (size_t i = 0; i < maAttributeTokens.size(); ++i)
    {
        pAttr->Token = maAttributeTokens[i];
        pAttr->Value = OUString( getFastAttributeValue(i), AttributeValueLength(i), RTL_TEXTENCODING_UTF8 );
        pAttr++;
    }
    return aSeq;
}

sal_Int32 FastTokenHandlerBase::getTokenFromChars(
        const css::uno::Reference< css::xml::sax::XFastTokenHandler > &xTokenHandler,
        FastTokenHandlerBase *pTokenHandler,
        const char *pToken, size_t nLen /* = 0 */ )
{
    sal_Int32 nRet;

    if( !nLen )
        nLen = strlen( pToken );

    if( pTokenHandler )
        nRet = pTokenHandler->getTokenDirect( pToken, (sal_Int32) nLen );
    else
    {
        // heap allocate, copy & then free
        Sequence< sal_Int8 > aSeq( (sal_Int8*)pToken, nLen );
        nRet = xTokenHandler->getTokenFromUTF8( aSeq );
    }

    return nRet;
}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */