/***************************************************************************
 *   Copyright (C) 2007 by Rajko Albrecht                                  *
 *   ral@alwins-world.de                                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#include "diffsyntax.h"
#include <tdeglobalsettings.h>
#include <tdeglobal.h>
#include <kdebug.h>

#include <tqregexp.h>

/*!
    \fn DiffSyntax::DiffSyntax(TQTextEdit*)
 */
 DiffSyntax::DiffSyntax(TQTextEdit*aTextEdit)
    : TQSyntaxHighlighter(aTextEdit)
{
}


/*!
    \fn DiffSyntax::highlightParagraph ( const TQString & text, int endStateOfLastPara )
 */
int DiffSyntax::highlightParagraph ( const TQString & aText, int endStateOfLastPara)
{
    static TQRegExp a("^\\w+:\\s.*$");
    static TQRegExp b("^\\W+$");
    TQColor c(0,0,0);
    TQFont f(TDEGlobalSettings::fixedFont());
    int ret = 0;
    if (endStateOfLastPara == 1) {
        ret = 2;
    } else if (endStateOfLastPara == 2) {
        if (b.search(aText)!=0) {
            ret = 2;
        }
    }

    if (a.search(aText)>-1) {
        c = TQColor("#660033");
        if (endStateOfLastPara==1||endStateOfLastPara==2) {
            f.setBold(true);
        } else {
            f.setItalic(true);
        }
    } else if (aText.startsWith("_____" )) {
        ret = 1;
        c = TQColor("#1D1D8F");
    } else if (aText.startsWith("+")) {
        c = TQColor("#008B00");
        if (aText.startsWith("+++")) {
            f.setBold(true);
        }
    } else if (aText.startsWith("-")) {
        c = TQColor("#CD3333");
        if (aText.startsWith("---")) {
            f.setBold(true);
        }
    } else if (aText.startsWith("@@")) {
        c = TQColor("#1D1D8F");
    }
    if (endStateOfLastPara==2 && ret==2) {
        if (aText.startsWith("   +")) {
            c = TQColor("#008B00");
        } else if (aText.startsWith("   -")) {
            c = TQColor("#CD3333");
        }
    }
    setFormat(0,(int)aText.length(),f,c);
    return ret;
}


/*!
    \fn DiffSyntax::~DiffSyntax()
 */
 DiffSyntax::~DiffSyntax()
{
}