/* -*- 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 "XMLIndexMarkExport.hxx"
#include <o3tl/any.hxx>
#include <tools/debug.hxx>
#include <rtl/ustring.hxx>
#include <rtl/ustrbuf.hxx>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/beans/XPropertySetInfo.hpp>
#include <sax/tools/converter.hxx>
#include <xmloff/xmltoken.hxx>
#include <xmloff/xmlnamespace.hxx>
#include <xmloff/xmlexp.hxx>


using namespace ::xmloff::token;

using ::com::sun::star::beans::XPropertySet;
using ::com::sun::star::beans::XPropertySetInfo;
using ::com::sun::star::uno::Reference;
using ::com::sun::star::uno::Any;

XMLIndexMarkExport::XMLIndexMarkExport(
    SvXMLExport& rExp)
:   rExport(rExp)
{
}

const enum XMLTokenEnum lcl_pTocMarkNames[] =
    { XML_TOC_MARK, XML_TOC_MARK_START, XML_TOC_MARK_END };
const enum XMLTokenEnum lcl_pUserIndexMarkName[] =
    { XML_USER_INDEX_MARK,
          XML_USER_INDEX_MARK_START, XML_USER_INDEX_MARK_END };
const enum XMLTokenEnum lcl_pAlphaIndexMarkName[] =
    { XML_ALPHABETICAL_INDEX_MARK,
          XML_ALPHABETICAL_INDEX_MARK_START,
          XML_ALPHABETICAL_INDEX_MARK_END };


void XMLIndexMarkExport::ExportIndexMark(
    const Reference<XPropertySet> & rPropSet,
    bool bAutoStyles)
{
    /// index marks have no styles!
    if (bAutoStyles)
        return;

    const enum XMLTokenEnum * pElements = nullptr;
    sal_Int8 nElementNo = -1;

    // get index mark
    Any aAny = rPropSet->getPropertyValue(gsDocumentIndexMark);
    Reference<XPropertySet> xIndexMarkPropSet;
    aAny >>= xIndexMarkPropSet;

    // common: handling of start, end, collapsed entries and
    // alternative text

    // collapsed/alternative text entry?
    aAny = rPropSet->getPropertyValue(gsIsCollapsed);
    if (*o3tl::doAccess<bool>(aAny))
    {
        // collapsed entry: needs alternative text
        nElementNo = 0;

        aAny = xIndexMarkPropSet->getPropertyValue(gsAlternativeText);
        OUString sTmp;
        aAny >>= sTmp;
        DBG_ASSERT(!sTmp.isEmpty(),
                   "collapsed index mark without alternative text");
        rExport.AddAttribute(XML_NAMESPACE_TEXT, XML_STRING_VALUE, sTmp);
    }
    else
    {
        // start and end entries: has ID
        aAny = rPropSet->getPropertyValue(gsIsStart);
        nElementNo = *o3tl::doAccess<bool>(aAny) ? 1 : 2;

        // generate ID
        OUStringBuffer sBuf;
        GetID(sBuf, xIndexMarkPropSet);
        rExport.AddAttribute(XML_NAMESPACE_TEXT, XML_ID,
                             sBuf.makeStringAndClear());
    }

    // distinguish between TOC, user, alphab. index marks by
    // asking for specific properties
    // Export attributes for -mark-start and -mark elements,
    // but not for -mark-end
    Reference<XPropertySetInfo> xPropertySetInfo =
        xIndexMarkPropSet->getPropertySetInfo();
    if (xPropertySetInfo->hasPropertyByName(gsUserIndexName))
    {
        // user index mark
        pElements = lcl_pUserIndexMarkName;
        if (nElementNo != 2)
        {
            ExportUserIndexMarkAttributes(xIndexMarkPropSet);
        }
    }
    else if (xPropertySetInfo->hasPropertyByName(gsPrimaryKey))
    {
        // alphabetical index mark
        pElements = lcl_pAlphaIndexMarkName;
        if (nElementNo != 2)
        {
            ExportAlphabeticalIndexMarkAttributes(xIndexMarkPropSet);
        }
    }
    else
    {
        // table of content:
        pElements = lcl_pTocMarkNames;
        if (nElementNo != 2)
        {
            ExportTOCMarkAttributes(xIndexMarkPropSet);
        }
    }

    // export element
    DBG_ASSERT(pElements != nullptr, "illegal element array");
    DBG_ASSERT(nElementNo >= 0, "illegal name array index");
    DBG_ASSERT(nElementNo <= 2, "illegal name array index");

    if ((pElements != nullptr) && (nElementNo != -1))
    {
        SvXMLElementExport aElem(rExport,
                                 XML_NAMESPACE_TEXT,
                                 pElements[nElementNo],
                                 false, false);
    }

}

void XMLIndexMarkExport::ExportTOCMarkAttributes(
    const Reference<XPropertySet> & rPropSet)
{
    // outline level
    sal_Int16 nLevel = 0;
    Any aAny = rPropSet->getPropertyValue(gsLevel);
    aAny >>= nLevel;
    rExport.AddAttribute(XML_NAMESPACE_TEXT, XML_OUTLINE_LEVEL,
                             OUString::number(nLevel + 1));
}

static void lcl_ExportPropertyString( SvXMLExport& rExport,
                               const Reference<XPropertySet> & rPropSet,
                               const OUString & sProperty,
                               XMLTokenEnum eToken,
                               Any& rAny )
{
    rAny = rPropSet->getPropertyValue( sProperty );

    OUString sValue;
    if( (rAny >>= sValue) && !sValue.isEmpty() )
    {
        rExport.AddAttribute( XML_NAMESPACE_TEXT, eToken, sValue );
    }
}

static void lcl_ExportPropertyBool( SvXMLExport& rExport,
                             const Reference<XPropertySet> & rPropSet,
                             const OUString & sProperty,
                             XMLTokenEnum eToken,
                             Any& rAny )
{
    rAny = rPropSet->getPropertyValue( sProperty );

    bool bValue;
    if( (rAny >>= bValue) && bValue )
    {
        rExport.AddAttribute( XML_NAMESPACE_TEXT, eToken, XML_TRUE );
    }
}

void XMLIndexMarkExport::ExportUserIndexMarkAttributes(
    const Reference<XPropertySet> & rPropSet)
{
    // name of user index
    // (unless it's the default index; then it has no name)
    Any aAny;
    lcl_ExportPropertyString( rExport, rPropSet, gsUserIndexName, XML_INDEX_NAME, aAny );

    // additionally export outline level; just reuse ExportTOCMarkAttributes
    ExportTOCMarkAttributes( rPropSet );
}

void XMLIndexMarkExport::ExportAlphabeticalIndexMarkAttributes(
    const Reference<XPropertySet> & rPropSet)
{
    // primary and secondary keys (if available)
    Any aAny;
    lcl_ExportPropertyString( rExport, rPropSet, gsTextReading, XML_STRING_VALUE_PHONETIC, aAny );
    lcl_ExportPropertyString( rExport, rPropSet, gsPrimaryKey, XML_KEY1, aAny );
    lcl_ExportPropertyString( rExport, rPropSet, gsPrimaryKeyReading, XML_KEY1_PHONETIC, aAny );
    lcl_ExportPropertyString( rExport, rPropSet, gsSecondaryKey, XML_KEY2, aAny );
    lcl_ExportPropertyString( rExport, rPropSet, gsSecondaryKeyReading, XML_KEY2_PHONETIC, aAny );
    lcl_ExportPropertyBool( rExport, rPropSet, gsMainEntry, XML_MAIN_ENTRY, aAny );
}

void XMLIndexMarkExport::GetID(
    OUStringBuffer& sBuf,
    const Reference<XPropertySet> & rPropSet)
{
    // HACK: use address of object to form identifier
    sal_Int64 nId = sal::static_int_cast<sal_Int64>(reinterpret_cast<sal_uIntPtr>(rPropSet.get()));
    sBuf.append("IMark");
    sBuf.append(nId);
}

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