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/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 *

 * Copyright (C) 2004-5.

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 * cresques@gmail.com

 */

package org.gvsig.dxf.px.dxf;

import java.text.StringCharacterIterator;

/**

 * La clase DxfConvTexts se emplea para convertir los textos asociados a las entidades

 * TEXT de un fichero DXF al alfabeto tradicional.

 * @author jmorell

 */

public class DxfConvTexts {

    /**

     * M?todo que permite transformar los textos asociados a entidades TEXT en un

     * fichero DXF al alfabeto tradicional.

     * @param s, texto extraido de un DXF.

     * @return String, el mismo texto en alfabeto tradicional.

     */

    public static String ConvertText(String s) {

        StringCharacterIterator stringcharacteriterator = new StringCharacterIterator(s);

        StringBuffer stringbuffer = new StringBuffer();

        int[] ai = new int[s.length()];

        int i = 0;

        int j = 0;

        for (char c = stringcharacteriterator.first(); c != '\uFFFF';

                 c = stringcharacteriterator.next())

            if (c == '%') {

                c = stringcharacteriterator.next();

                if (c != '%') {

                    stringbuffer.append('%');

                    c = stringcharacteriterator.previous();

                } else {

                    c = stringcharacteriterator.next();

                    switch (c) {

                    case 37: // '%'

                        stringbuffer.append('%');

                        break;

                    case 80: // 'P'

                    case 112: // 'p'

                        stringbuffer.append('\361');

                        break;

                    case 67: // 'C'

                    case 99: // 'c'

                        stringbuffer.append('\355');

                        break;

                    case 68: // 'D'

                    case 100: // 'd'

                        stringbuffer.append('\u00b0');

                        break;

                    case 85: // 'U'

                    case 117: // 'u'

                        ai[stringbuffer.length()] ^= 1;

                        i++;

                        break;

                    case 79: // 'O'

                    case 111: // 'o'

                        ai[stringbuffer.length()] ^= 2;

                        j++;

                        break;

                    default:

                        if ((c >= '0') && (c <= '9')) {

                            int k = 3;

                            char c1 = (char) (c - 48);

                            for (c = stringcharacteriterator.next();

                                     (c >= '0') && (c <= '9') && (--k > 0);

                                     c = stringcharacteriterator.next())

                                c1 = (char) ((10 * c1) + (c - 48));

                            stringbuffer.append(c1);

                        }

                        c = stringcharacteriterator.previous();

                        break;

                    }

                }

            } else if (c == '^') {

                c = stringcharacteriterator.next();

                if (c == ' ') {

                    stringbuffer.append('^');

                }

            } else {

                stringbuffer.append(c);

            }

        s = Unicode.char2DOS437(stringbuffer, 2, '?');

        String ss = s;

        return ss;

    }

}