Application: gvSIG desktop

/* jdwglib. Java Library for reading Dwg files.

 * 

 * Author: Jose Morell Rama (jose.morell@gmail.com).

 * Port from the Pythoncad Dwg library by Art Haas.

 *

 * Copyright (C) 2005 Jose Morell, IVER TI S.A. and Generalitat Valenciana

 *

 * 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:

 *

 * Jose Morell (jose.morell@gmail.com)

 * 

 * or

 *

 * IVER TI S.A.

 *  C/Salamanca, 50

 *  46005 Valencia

 *  Spain

 *  +34 963163400

 *  dac@iver.es

 */

package org.gvsig.dwg.lib.util;

import java.text.StringCharacterIterator;

/**

 * This class allows to convert an Autocad text in an Unicode text

 * 

 * @author jmorell

 */

public class TextToUnicodeConverter {

    /**

     * This method allows to convert an Autocad text in an Unicode text

     * 

     * @param s Autocad text

     * @return String Unicode text

     */

        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;

        }

}