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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* Version: MPL 1.1 / GPLv3+ / LGPLv3+
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License or as specified alternatively below. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Major Contributor(s):
* Copyright (C) 2011 Lubos Lunak <l.lunak@suse.cz> (initial developer)
*
* All Rights Reserved.
*
* For minor contributions see the git repository.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 3 or later (the "GPLv3+"), or
* the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
* in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
* instead of those above.
*/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_starmath.hxx"
#include "ooxmlimport.hxx"
#include <oox/token/tokens.hxx>
#include <oox/token/namespaces.hxx>
using namespace oox;
using namespace oox::formulaimport;
using rtl::OUString;
/*
The primary internal data structure for the formula is the text representation
(the SmNode tree is built from it), so read data must be converted into this format.
*/
#define M_TOKEN( token ) OOX_TOKEN( officeMath, token )
#define OPENING_TAG( token ) OPENING( token )
#define CLOSING_TAG( token ) CLOSING( token )
// *sigh*
#define STR( str ) OUString( RTL_CONSTASCII_USTRINGPARAM( str ))
// TODO create IS_OPENING(), IS_CLOSING() instead of doing 'next == OPENING( next )' ?
SmOoxmlImport::SmOoxmlImport( oox::formulaimport::XmlStream& s )
: stream( s )
{
}
OUString SmOoxmlImport::ConvertToStarMath()
{
return handleStream();
}
// "toplevel" of reading, there will be oMath (if there was oMathPara, that was
// up to the parent component to handle)
// NOT complete
OUString SmOoxmlImport::handleStream()
{
stream.ensureOpeningTag( M_TOKEN( oMath ));
OUString ret;
while( !stream.atEnd())
{
XmlStream::Tag tag = stream.currentTag();
if( tag.token == CLOSING( M_TOKEN( oMath )))
break;
switch( tag.token )
{
case OPENING( M_TOKEN( acc )):
ret += STR( " " ) + handleAcc();
break;
case OPENING( M_TOKEN( bar )):
ret += STR( " " ) + handleBar();
break;
case OPENING( M_TOKEN( f )):
ret += STR( " " ) + handleF();
break;
default:
stream.handleUnexpectedTag();
break;
}
}
stream.ensureClosingTag( M_TOKEN( oMath ));
return ret;
}
OUString SmOoxmlImport::handleAcc()
{
stream.ensureOpeningTag( M_TOKEN( acc ));
OUString acc;
if( XmlStream::Tag accPr = stream.checkOpeningTag( M_TOKEN( accPr )))
{
if( XmlStream::Tag chr = stream.checkOpeningTag( M_TOKEN( chr )))
{
acc = chr.attributes.attribute( M_TOKEN( val ));
stream.ensureClosingTag( M_TOKEN( chr ));
}
stream.ensureClosingTag( M_TOKEN( accPr ));
}
// see aTokenTable in parse.cxx
switch( acc.isEmpty() ? sal_Unicode( MS_ACUTE ) : acc[ 0 ] )
{
case MS_CHECK:
acc = STR( "check" );
break;
case MS_ACUTE:
acc = STR( "acute" );
break;
case MS_GRAVE:
acc = STR( "grave" );
break;
case MS_BREVE:
acc = STR( "breve" );
break;
case MS_CIRCLE:
acc = STR( "circle" );
break;
case MS_VEC:
acc = STR( "vec" );
break;
case MS_TILDE:
acc = STR( "tilde" );
break;
case MS_HAT:
acc = STR( "hat" );
break;
case MS_DOT:
acc = STR( "dot" );
break;
case MS_DDOT:
acc = STR( "ddot" );
break;
case MS_DDDOT:
acc = STR( "dddot" );
break;
// these characters do not exist it seems
// case MS_WIDETILDE:
// acc = STR( "widetilde" );
// break;
// case TWIDEHAT:
// acc = STR( "widehat" );
// break;
// case TWIDEVEC:
// acc = STR( "widevec" );
// break;
default:
acc = STR( "acute" );
break;
}
OUString e = handleE();
stream.ensureClosingTag( M_TOKEN( acc ));
return acc + STR( " { " ) + e + STR( " }" );
}
OUString SmOoxmlImport::handleBar()
{
stream.ensureOpeningTag( M_TOKEN( bar ));
enum pos_t { top, bot } topbot = bot;
if( stream.checkOpeningTag( M_TOKEN( barPr )))
{
if( XmlStream::Tag pos = stream.checkOpeningTag( M_TOKEN( pos )))
{
if( pos.attributes.attribute( M_TOKEN( val )) == STR( "top" ))
topbot = top;
else if( pos.attributes.attribute( M_TOKEN( val )) == STR( "bot" ))
topbot = bot;
stream.ensureClosingTag( M_TOKEN( pos ));
}
stream.ensureClosingTag( M_TOKEN( barPr ));
}
OUString e = handleE();
stream.ensureClosingTag( M_TOKEN( bar ));
if( topbot == top )
return STR( "bar { " ) + e + STR( " }" );
else
return STR( "underline { " ) + e + STR( " }" );
}
OUString SmOoxmlImport::handleE()
{
stream.ensureOpeningTag( M_TOKEN( e ));
OUString ret = readOMathArg( M_TOKEN( e ));
stream.ensureClosingTag( M_TOKEN( e ));
return ret;
}
OUString SmOoxmlImport::readOMathArg( int endtoken )
{
OUString ret;
while( !stream.atEnd())
{ // TODO can there really be more or just one sub-elements?
XmlStream::Tag tag = stream.currentTag();
if( tag.token == CLOSING( endtoken ))
break;
switch( tag.token )
{
case OPENING( M_TOKEN( acc )):
ret += STR( " " ) + handleAcc();
break;
case OPENING( M_TOKEN( f )):
ret += STR( " " ) + handleF();
break;
case OPENING( M_TOKEN( r )):
ret += STR( " " ) + handleR();
break;
default:
stream.handleUnexpectedTag();
break;
}
}
return ret;
}
// NOT complete
OUString SmOoxmlImport::handleF()
{
stream.ensureOpeningTag( M_TOKEN( f ));
enum operation_t { bar, lin, noBar } operation = bar;
OUString oper = STR( "over" );
if( stream.checkOpeningTag( M_TOKEN( fPr )))
{
if( XmlStream::Tag type = stream.checkOpeningTag( M_TOKEN( type )))
{
if( type.attributes.attribute( M_TOKEN( val )) == STR( "bar" ))
operation = bar;
else if( type.attributes.attribute( M_TOKEN( val )) == STR( "lin" ))
operation = lin;
else if( type.attributes.attribute( M_TOKEN( val )) == STR( "noBar" ))
operation = noBar;
stream.ensureClosingTag( M_TOKEN( type ));
}
stream.ensureClosingTag( M_TOKEN( fPr ));
}
stream.ensureOpeningTag( M_TOKEN( num ));
OUString num = readOMathArg( M_TOKEN( num ));
stream.ensureClosingTag( M_TOKEN( num ));
stream.ensureOpeningTag( M_TOKEN( den ));
OUString den = readOMathArg( M_TOKEN( den ));
stream.ensureClosingTag( M_TOKEN( den ));
stream.ensureClosingTag( M_TOKEN( f ));
if( operation == bar )
return STR( "{" ) + num + STR( "} over {" ) + den + STR( "}" );
else if( operation == lin )
return STR( "{" ) + num + STR( "} / {" ) + den + STR( "}" );
else // noBar
{ // TODO we write out stack of 3 items as recursive m:f, so merge here back
// to 'stack { x # y # z }'
return STR( "binom { " ) + num + STR( " } { " ) + den + STR( " }" );
}
}
// NOT complete
OUString SmOoxmlImport::handleR()
{
stream.ensureOpeningTag( M_TOKEN( r ));
if( XmlStream::Tag rPr = stream.checkOpeningTag( OOX_TOKEN( doc, rPr )))
{ // TODO
// stream.checkOpeningTag( OOX_TOKEN( doc, rFonts ));
// stream.ensureClosingTag( OOX_TOKEN( doc, rFonts ));
stream.ensureClosingTag( OOX_TOKEN( doc, rPr ));
}
// TODO can there be more t's ?
XmlStream::Tag rtag = stream.ensureOpeningTag( M_TOKEN( t ));
// TODO bail out if failure?
OUString text = rtag.text;
if( rtag.attributes.attribute( OOX_TOKEN( xml, space )) != STR( "preserve" ))
text = text.trim();
stream.ensureClosingTag( M_TOKEN( t ));
stream.ensureClosingTag( M_TOKEN( r ));
return text;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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