001/*
002 * $Id: LangAlt.java 4784 2011-03-15 08:33:00Z blowagie $
003 *
004 * This file is part of the iText (R) project.
005 * Copyright (c) 1998-2011 1T3XT BVBA
006 * Authors: Bruno Lowagie, Paulo Soares, et al.
007 *
008 * This program is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU Affero General Public License version 3
010 * as published by the Free Software Foundation with the addition of the
011 * following permission added to Section 15 as permitted in Section 7(a):
012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
014 *
015 * This program is distributed in the hope that it will be useful, but
016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
017 * or FITNESS FOR A PARTICULAR PURPOSE.
018 * See the GNU Affero General Public License for more details.
019 * You should have received a copy of the GNU Affero General Public License
020 * along with this program; if not, see http://www.gnu.org/licenses or write to
021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
022 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
023 * http://itextpdf.com/terms-of-use/
024 *
025 * The interactive user interfaces in modified source and object code versions
026 * of this program must display Appropriate Legal Notices, as required under
027 * Section 5 of the GNU Affero General Public License.
028 *
029 * In accordance with Section 7(b) of the GNU Affero General Public License,
030 * a covered work must retain the producer line in every PDF that is created
031 * or manipulated using iText.
032 *
033 * You can be released from the requirements of the license by purchasing
034 * a commercial license. Buying such a license is mandatory as soon as you
035 * develop commercial activities involving the iText software without
036 * disclosing the source code of your own applications.
037 * These activities include: offering paid services to customers as an ASP,
038 * serving PDFs on the fly in a web application, shipping iText with a closed
039 * source product.
040 *
041 * For more information, please contact iText Software Corp. at this
042 * address: sales@itextpdf.com
043 */
044package com.itextpdf.text.xml.xmp;
045
046import java.util.Enumeration;
047import java.util.Properties;
048
049public class LangAlt extends Properties {
050
051        /** A serial version id. */
052        private static final long serialVersionUID = 4396971487200843099L;
053
054        /** Key for the default language. */
055        public static final String DEFAULT = "x-default";
056
057        /** Creates a Properties object that stores languages for use in an XmpSchema */
058        public LangAlt(String defaultValue) {
059                super();
060                addLanguage(DEFAULT, defaultValue);
061        }
062
063        /** Creates a Properties object that stores languages for use in an XmpSchema */
064        public LangAlt() {
065                super();
066        }
067
068        /**
069         * Add a language.
070         */
071        public void addLanguage(String language, String value) {
072                setProperty(language, XmpSchema.escape(value));
073        }
074
075        /**
076         * Process a property.
077         */
078        protected void process(StringBuffer buf, Object lang) {
079                buf.append("<rdf:li xml:lang=\"");
080                buf.append(lang);
081                buf.append("\" >");
082                buf.append(get(lang));
083                buf.append("</rdf:li>");
084        }
085
086        /**
087         * Creates a String that can be used in an XmpSchema.
088         */
089        @Override
090    public String toString() {
091                StringBuffer sb = new StringBuffer();
092                sb.append("<rdf:Alt>");
093                for (Enumeration<?> e = this.propertyNames(); e.hasMoreElements();) {
094                        process(sb, e.nextElement());
095                }
096                sb.append("</rdf:Alt>");
097                return sb.toString();
098        }
099
100}