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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.
*/
#include "ooxmlimport.hxx"
#include <oox/token/tokens.hxx>
#include <oox/token/namespaces.hxx>
using namespace oox;
using namespace oox::formulaimport;
using rtl::OUString;
using rtl::OUStringBuffer;
/*
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() && stream.currentToken() != CLOSING( M_TOKEN( oMath )))
{
// strictly speaking, it is not OMathArg here, but currently supported
// functionality is the same like OMathArg, in the future this may need improving
OUString item = readOMathArg();
if( item.isEmpty())
continue;
if( !ret.isEmpty())
ret += STR( " " );
ret += item;
}
stream.ensureClosingTag( M_TOKEN( oMath ));
fprintf(stderr, "FORMULA: %s\n", rtl::OUStringToOString( ret, RTL_TEXTENCODING_UTF8 ).getStr());
return ret;
}
OUString SmOoxmlImport::readOMathArg()
{
OUString ret;
while( !stream.atEnd() && stream.currentToken() != CLOSING( stream.currentToken()))
{
if( !ret.isEmpty())
ret += STR( " " );
switch( stream.currentToken())
{
case OPENING( M_TOKEN( acc )):
ret += handleAcc();
break;
case OPENING( M_TOKEN( bar )):
ret += handleBar();
break;
case OPENING( M_TOKEN( borderBox )):
ret += handleBorderBox();
break;
case OPENING( M_TOKEN( d )):
ret += handleD();
break;
case OPENING( M_TOKEN( f )):
ret += handleF();
break;
case OPENING( M_TOKEN( func )):
ret += handleFunc();
break;
case OPENING( M_TOKEN( limLow )):
ret += handleLimLowUpp( LimLow );
break;
case OPENING( M_TOKEN( limUpp )):
ret += handleLimLowUpp( LimUpp );
break;
case OPENING( M_TOKEN( groupChr )):
ret += handleGroupChr();
break;
case OPENING( M_TOKEN( m )):
ret += handleM();
break;
case OPENING( M_TOKEN( nary )):
ret += handleNary();
break;
case OPENING( M_TOKEN( r )):
ret += handleR();
break;
default:
stream.handleUnexpectedTag();
break;
}
}
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.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:
// prefer wide variants for these 3, .docx can't seem to differentiate
// between e.g. 'vec' and 'widevec', if whatever the accent is above is short, this
// shouldn't matter, but short above a longer expression doesn't look right
acc = STR( "widevec" );
break;
case MS_TILDE:
acc = STR( "widetilde" );
break;
case MS_HAT:
acc = STR( "widehat" );
break;
case MS_DOT:
acc = STR( "dot" );
break;
case MS_DDOT:
acc = STR( "ddot" );
break;
case MS_DDDOT:
acc = STR( "dddot" );
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.attribute( M_TOKEN( val )) == STR( "top" ))
topbot = top;
else if( pos.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::handleBorderBox()
{
stream.ensureOpeningTag( M_TOKEN( borderBox ));
bool isStrikeH = false;
if( stream.checkOpeningTag( M_TOKEN( borderBoxPr )))
{
if( XmlStream::Tag strikeH = stream.checkOpeningTag( M_TOKEN( strikeH )))
{
if( strikeH.attribute( M_TOKEN( val ), false ))
isStrikeH = true;
stream.ensureClosingTag( M_TOKEN( strikeH ));
}
stream.ensureClosingTag( M_TOKEN( borderBoxPr ));
}
OUString e = handleE();
stream.ensureClosingTag( M_TOKEN( borderBox ));
if( isStrikeH )
return STR( "overstrike { " ) + e + STR( " }" );
// LO does not seem to implement anything for handling the other cases
return e;
}
OUString SmOoxmlImport::handleD()
{
stream.ensureOpeningTag( M_TOKEN( d ));
OUString opening = STR( "(" );
OUString closing = STR( ")" );
OUString separator = STR( "|" );
if( XmlStream::Tag dPr = stream.checkOpeningTag( M_TOKEN( dPr )))
{
if( XmlStream::Tag begChr = stream.checkOpeningTag( M_TOKEN( begChr )))
{
opening = begChr.attribute( M_TOKEN( val ), opening );
stream.ensureClosingTag( M_TOKEN( begChr ));
}
if( XmlStream::Tag sepChr = stream.checkOpeningTag( M_TOKEN( sepChr )))
{
separator = sepChr.attribute( M_TOKEN( val ), separator );
stream.ensureClosingTag( M_TOKEN( sepChr ));
}
if( XmlStream::Tag endChr = stream.checkOpeningTag( M_TOKEN( endChr )))
{
closing = endChr.attribute( M_TOKEN( val ), closing );
stream.ensureClosingTag( M_TOKEN( endChr ));
}
stream.ensureClosingTag( M_TOKEN( dPr ));
}
if( opening == STR( "{" ))
opening = STR( "left lbrace " );
if( closing == STR( "}" ))
closing = STR( " right rbrace" );
if( opening == OUString( sal_Unicode( 0x27e6 )))
opening = STR( "left ldbracket " );
if( closing == OUString( sal_Unicode( 0x27e7 )))
closing = STR( " right rdbracket" );
if( opening == STR( "|" ))
opening = STR( "left lline " );
if( closing == STR( "|" ))
closing = STR( " right rline" );
if( opening == OUString( sal_Unicode( 0x2225 )))
opening = STR( "left ldline " );
if( closing == OUString( sal_Unicode( 0x2225 )))
closing = STR( " right rdline" );
if( opening == OUString( sal_Unicode( 0x2329 )))
opening = STR( "left langle " );
if( closing == OUString( sal_Unicode( 0x232a )))
closing = STR( " right rangle" );
// use scalable brackets (the explicit "left" or "right")
if( opening == STR( "(" ) || opening == STR( "[" ))
opening = STR( "left " ) + opening;
if( closing == STR( ")" ) || closing == STR( "]" ))
closing = STR( " right " ) + closing;
if( separator == STR( "|" )) // plain "|" would be actually "V" (logical or)
separator = STR( " mline " );
OUStringBuffer ret;
ret.append( opening );
bool first = true;
while( stream.currentToken() == OPENING( M_TOKEN( e )))
{
if( !first )
ret.append( separator );
first = false;
ret.append( handleE());
}
ret.append( closing );
stream.ensureClosingTag( M_TOKEN( d ));
return ret.makeStringAndClear();
}
OUString SmOoxmlImport::handleE()
{
stream.ensureOpeningTag( M_TOKEN( e ));
OUString ret = readOMathArg();
stream.ensureClosingTag( M_TOKEN( e ));
return ret;
}
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.attribute( M_TOKEN( val )) == STR( "bar" ))
operation = bar;
else if( type.attribute( M_TOKEN( val )) == STR( "lin" ))
operation = lin;
else if( type.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();
stream.ensureClosingTag( M_TOKEN( num ));
stream.ensureOpeningTag( M_TOKEN( den ));
OUString den = readOMathArg();
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( " }" );
}
}
OUString SmOoxmlImport::handleFunc()
{
//lim from{x rightarrow 1} x
stream.ensureOpeningTag( M_TOKEN( func ));
stream.ensureOpeningTag( M_TOKEN( fName ));
OUString fname = readOMathArg();
stream.ensureClosingTag( M_TOKEN( fName ));
// fix the various functions
if( fname.match( STR( "lim {" ), 0 )) // startsWith()
fname = STR( "lim from {" ) + fname.copy( 5 );
OUString ret = fname + STR( " {" ) + handleE() + STR( "}" );
stream.ensureClosingTag( M_TOKEN( func ));
return ret;
}
OUString SmOoxmlImport::handleLimLowUpp( LimLowUpp_t limlowupp )
{
int token = limlowupp == LimLow ? M_TOKEN( limLow ) : M_TOKEN( limUpp );
stream.ensureOpeningTag( token );
OUString e = handleE();
stream.ensureOpeningTag( M_TOKEN( lim ));
OUString lim = readOMathArg();
stream.ensureClosingTag( M_TOKEN( lim ));
stream.ensureClosingTag( token );
return e + STR( " {" ) + lim + STR( "}" );
}
OUString SmOoxmlImport::handleGroupChr()
{
stream.ensureOpeningTag( M_TOKEN( groupChr ));
enum pos_t { top, bot } pos = bot;
if( stream.checkOpeningTag( M_TOKEN( groupChrPr )))
{
if( XmlStream::Tag posTag = stream.checkOpeningTag( M_TOKEN( pos )))
{
if( posTag.attribute( M_TOKEN( val ), STR( "bot" )) == STR( "top" ))
pos = top;
stream.ensureClosingTag( M_TOKEN( pos ));
}
stream.ensureClosingTag( M_TOKEN( groupChrPr ));
}
OUString ret = STR( "{ " ) + handleE() + ( pos == top ? STR( "} overbrace" ) : STR( "} underbrace" ));
stream.ensureClosingTag( M_TOKEN( groupChr ));
return ret;
}
OUString SmOoxmlImport::handleM()
{
stream.ensureOpeningTag( M_TOKEN( m ));
OUString allrows;
do // there must be at least one m:mr
{
stream.ensureOpeningTag( M_TOKEN( mr ));
OUString row;
do // there must be at least one m:e
{
if( !row.isEmpty())
row += STR( " # " );
row += handleE();
} while( !stream.atEnd() && stream.currentToken() == OPENING( M_TOKEN( e )));
if( !allrows.isEmpty())
allrows += STR( " ## " );
allrows += row;
stream.ensureClosingTag( M_TOKEN( mr ));
} while( !stream.atEnd() && stream.currentToken() == OPENING( M_TOKEN( mr )));
stream.ensureClosingTag( M_TOKEN( m ));
return STR( "matrix {" ) + allrows + STR( "}" );
}
OUString SmOoxmlImport::handleNary()
{
stream.ensureOpeningTag( M_TOKEN( nary ));
sal_Unicode chr = 0x222b;
bool subHide = false;
bool supHide = false;
if( stream.checkOpeningTag( M_TOKEN( naryPr )))
{
if( XmlStream::Tag chrTag = stream.checkOpeningTag( M_TOKEN( chr )))
{
chr = chrTag.attribute( M_TOKEN( val ), chr );
stream.ensureClosingTag( M_TOKEN( chr ));
}
if( XmlStream::Tag subHideTag = stream.checkOpeningTag( M_TOKEN( subHide )))
{
subHide = subHideTag.attribute( M_TOKEN( val ), subHide );
stream.ensureClosingTag( M_TOKEN( subHide ));
}
if( XmlStream::Tag supHideTag = stream.checkOpeningTag( M_TOKEN( supHide )))
{
supHide = supHideTag.attribute( M_TOKEN( val ), supHide );
stream.ensureClosingTag( M_TOKEN( supHide ));
}
stream.ensureClosingTag( M_TOKEN( naryPr ));
}
stream.ensureOpeningTag( M_TOKEN( sub ));
OUString sub = readOMathArg();
stream.ensureClosingTag( M_TOKEN( sub ));
stream.ensureOpeningTag( M_TOKEN( sup ));
OUString sup = readOMathArg();
stream.ensureClosingTag( M_TOKEN( sup ));
OUString e = handleE();
OUString ret;
switch( chr )
{
case MS_INT:
ret = STR( "int" );
break;
case MS_IINT:
ret = STR( "liint" );
break;
case MS_IIINT:
ret = STR( "liiint" );
break;
case MS_LINT:
ret = STR( "lint" );
break;
case MS_LLINT:
ret = STR( "llint" );
break;
case MS_LLLINT:
ret = STR( "lllint" );
break;
case MS_PROD:
ret = STR( "prod" );
break;
case MS_COPROD:
ret = STR( "coprod" );
break;
case MS_SUM:
ret = STR( "sum" );
break;
default:
fprintf( stderr, "Unknown m:nary chr '%d'\n", chr );
break;
}
if( !subHide )
ret += STR( " from {" ) + sub + STR( "}" );
if( !supHide )
ret += STR( " to {" ) + sup + STR( "}" );
ret += STR( " {" ) + e + STR( "}" );
stream.ensureClosingTag( M_TOKEN( nary ));
return ret;
}
// 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 ));
}
OUString text;
while( !stream.atEnd() && stream.currentToken() != CLOSING( stream.currentToken()))
{
switch( stream.currentToken())
{
case OPENING( M_TOKEN( t )):
{
XmlStream::Tag rtag = stream.ensureOpeningTag( M_TOKEN( t ));
if( rtag.attribute( OOX_TOKEN( xml, space )) != STR( "preserve" ))
text += rtag.text.trim();
else
text += rtag.text;
stream.ensureClosingTag( M_TOKEN( t ));
break;
}
default:
stream.handleUnexpectedTag();
break;
}
}
stream.ensureClosingTag( M_TOKEN( r ));
return text;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|