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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 <metainforeader.hxx>
#include "dummytag.hxx"
#include "simpletag.hxx"
#include "keywordstag.hxx"
#include <assert.h>
/** constructor.
*/
CMetaInfoReader::CMetaInfoReader( const Filepath_t& DocumentName ):
CBaseReader( DocumentName )
{
try
{
m_pKeywords_Builder = new CKeywordsTag;
m_pSimple_Builder = new CSimpleTag( );
m_pDummy_Builder = new CDummyTag;
//retrieve all information that is useful
m_AllMetaInfo[META_INFO_AUTHOR] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_TITLE] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_SUBJECT] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_KEYWORDS] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_DESCRIPTION] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_DOCUMENT_STATISTIC] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_GENERATOR] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_CREATION] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_CREATOR] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_MODIFIED] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_LANGUAGE] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_DOCUMENT_NUMBER] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_EDITING_TIME] = EMPTY_XML_TAG;
Initialize( META_CONTENT_NAME );
}
catch(xml_parser_exception&)
{
// OSL_ENSURE(false, ex.what());
}
catch(...)
{
// OSL_ENSURE(false, "Unknown error");
}
}
CMetaInfoReader::CMetaInfoReader( StreamInterface* stream ) :
CBaseReader( stream )
{
try
{
m_pKeywords_Builder = new CKeywordsTag;
m_pSimple_Builder = new CSimpleTag( );
m_pDummy_Builder = new CDummyTag;
//retrieve all information that is useful
m_AllMetaInfo[META_INFO_AUTHOR] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_TITLE] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_SUBJECT] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_KEYWORDS] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_DESCRIPTION] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_DOCUMENT_STATISTIC] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_GENERATOR] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_CREATION] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_CREATOR] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_MODIFIED] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_LANGUAGE] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_DOCUMENT_NUMBER] = EMPTY_XML_TAG;
m_AllMetaInfo[META_INFO_EDITING_TIME] = EMPTY_XML_TAG;
Initialize( META_CONTENT_NAME );
}
catch(xml_parser_exception&)
{
// OSL_ENSURE(false, ex.what());
}
catch(...)
{
// OSL_ENSURE(false, "Unknown error");
}
}
/** destructor.
*/
CMetaInfoReader::~CMetaInfoReader()
{
delete m_pKeywords_Builder;
delete m_pSimple_Builder;
delete m_pDummy_Builder;
}
/*********************** export functions ***********************/
/** check if the Tag is in the target meta.xml file.
@param TagName
the name of the tag that will be retrieve.
*/
bool CMetaInfoReader::hasTag(const std::wstring& TagName) const
{
return ( m_AllMetaInfo.find(TagName) != m_AllMetaInfo.end());
}
/** Get a specific tag content, compound tags will be returned as comma separated list.
@param TagName
the name of the tag that will be retrieve.
*/
std::wstring CMetaInfoReader::getTagData( const std::wstring& TagName)
{
if( hasTag( TagName ) )
return m_AllMetaInfo[TagName].first;
else
return EMPTY_STRING;
}
/** check if the a tag has the specific attribute.
@param TagName
the name of the tag.
@param AttributeName
the name of the attribute.
*/
bool CMetaInfoReader::hasTagAttribute(const std::wstring& TagName, const std::wstring& AttributeName)
{
return ( m_AllMetaInfo[TagName].second.find( AttributeName) != m_AllMetaInfo[TagName].second.end() );
}
/** Get a specific attribute content.
@param TagName
the name of the tag.
@param AttributeName
the name of the attribute.
*/
std::wstring CMetaInfoReader::getTagAttribute(const std::wstring& TagName, const std::wstring& AttributeName)
{
if (hasTagAttribute(TagName, AttributeName))
return m_AllMetaInfo[ TagName ].second[AttributeName];
else
return EMPTY_STRING;
}
/** helper function for getDefaultLocale().
*/
const LocaleSet_t EN_US_LOCALE( ::std::make_pair( ::std::wstring( L"en" ), ::std::wstring( L"US" )));
static bool isValidLocale(const ::std::wstring& Locale)
{
return ( Locale.length() == 5 );
}
/** Get the default language of the whole document, if no such field, en-US is returned.
*/
LocaleSet_t CMetaInfoReader::getDefaultLocale()
{
if (hasTag(META_INFO_LANGUAGE))
{
::std::wstring locale = m_AllMetaInfo[META_INFO_LANGUAGE].first;
return isValidLocale(locale) ? ::std::make_pair(locale.substr( 0,2), locale.substr( 3,2)) : EN_US_LOCALE;
}
else
return EN_US_LOCALE;
}
/*********************** tag related functions ***********************/
/** choose an appropriate tag reader
*/
ITag* CMetaInfoReader::chooseTagReader( const std::wstring& tag_name, const XmlTagAttributes_t& XmlAttributes )
{
if ( tag_name == META_INFO_KEYWORD )
{
m_AllMetaInfo[META_INFO_KEYWORDS].second = XmlAttributes;
return m_pKeywords_Builder;
}
if (( tag_name == META_INFO_TITLE )||( tag_name == META_INFO_AUTHOR )||( tag_name == META_INFO_SUBJECT )||( tag_name == META_INFO_DESCRIPTION )||
( tag_name == META_INFO_DOCUMENT_STATISTIC )||( tag_name == META_INFO_GENERATOR )||( tag_name == META_INFO_CREATION )||( tag_name == META_INFO_CREATOR )||
( tag_name == META_INFO_MODIFIED )||( tag_name == META_INFO_LANGUAGE )||( tag_name == META_INFO_DOCUMENT_NUMBER )||( tag_name == META_INFO_EDITING_TIME ) )
{
m_AllMetaInfo[tag_name].second = XmlAttributes;
return m_pSimple_Builder;
}
else
return m_pDummy_Builder;
}
// save the received content into structure.
void CMetaInfoReader::saveTagContent( const std::wstring& tag_name )
{
ITag* pTagBuilder;
if ( tag_name == META_INFO_KEYWORDS )
pTagBuilder = m_pKeywords_Builder;
else if ( tag_name == META_INFO_KEYWORD )
{
// added for support for OASIS xml file format.
m_AllMetaInfo[META_INFO_KEYWORDS].first =m_pKeywords_Builder->getTagContent( );
return;
}
else if (( tag_name == META_INFO_TITLE )||( tag_name == META_INFO_AUTHOR )||( tag_name == META_INFO_SUBJECT )||( tag_name == META_INFO_DESCRIPTION )||
( tag_name == META_INFO_DOCUMENT_STATISTIC )||( tag_name == META_INFO_GENERATOR )||( tag_name == META_INFO_CREATION )||( tag_name == META_INFO_CREATOR )||
( tag_name == META_INFO_MODIFIED )||( tag_name == META_INFO_LANGUAGE )||( tag_name == META_INFO_DOCUMENT_NUMBER )||( tag_name == META_INFO_EDITING_TIME ) )
pTagBuilder = m_pSimple_Builder;
else
pTagBuilder = m_pDummy_Builder;
m_AllMetaInfo[tag_name].first =pTagBuilder->getTagContent( );
}
/*********************** event handler functions ***********************/
// start_element occurs when a tag is start
void CMetaInfoReader::start_element(
const string_t& /*raw_name*/,
const string_t& local_name,
const xml_tag_attribute_container_t& attributes)
{
//get appropriate Xml Tag Builder using MetaInfoBuilderFactory;
ITag* pTagBuilder = chooseTagReader( local_name,attributes );
assert( pTagBuilder!= nullptr );
pTagBuilder->startTag( );
m_TagBuilderStack.push( pTagBuilder );
}
// end_element occurs when a tag is closed
void CMetaInfoReader::end_element(const string_t& /*raw_name*/, const string_t& local_name)
{
assert( !m_TagBuilderStack.empty() );
ITag* pTagBuilder = m_TagBuilderStack.top();
m_TagBuilderStack.pop();
pTagBuilder->endTag();
saveTagContent( local_name );
}
// characters occurs when receiving characters
void CMetaInfoReader::characters( const string_t& character )
{
if ( character.length() > 0 && !HasOnlySpaces( character ) )
{
ITag* pTagBuilder = m_TagBuilderStack.top();
pTagBuilder->addCharacters( character );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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