/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2024 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#include "increment.h"

#include <wx/wxcrt.h>

bool IncrementString( wxString& name, int aIncrement )
{
    if( name.IsEmpty() )
        return true;

    wxString suffix;
    wxString digits;
    wxString outputFormat;
    wxString outputNumber;
    int      ii     = name.Len() - 1;
    int      dCount = 0;

    while( ii >= 0 && !wxIsdigit( name.GetChar( ii ) ) )
    {
        suffix = name.GetChar( ii ) + suffix;
        ii--;
    }

    while( ii >= 0 && wxIsdigit( name.GetChar( ii ) ) )
    {
        digits = name.GetChar( ii ) + digits;
        ii--;
        dCount++;
    }

    if( digits.IsEmpty() )
        return true;

    long number = 0;

    if( digits.ToLong( &number ) )
    {
        number += aIncrement;

        // Don't let result go below zero

        if( number > -1 )
        {
            name.Remove( ii + 1 );
            //write out a format string with correct number of leading zeroes
            outputFormat.Printf( wxS( "%%0%dld" ), dCount );
            //write out the number using the format string
            outputNumber.Printf( outputFormat, number );
            name << outputNumber << suffix;
            return true;
        }
    }

    return false;
}