Java tutorial
/* * This library is part of OpenCms - * the Open Source Content Management System * * Copyright (c) Alkacon Software GmbH (http://www.alkacon.com) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * For further information about Alkacon Software GmbH, please see the * company website: http://www.alkacon.com * * For further information about OpenCms, please see the * project website: http://www.opencms.org * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.opencms.util; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.Arrays; import java.util.Iterator; import java.util.Map; import java.util.Vector; import org.apache.commons.collections.ExtendedProperties; /** * Utilities to access property files.<p> * * @since 6.0.0 */ public final class CmsPropertyUtils { /** * Hides the public constructor.<p> */ private CmsPropertyUtils() { // prevent instantiation } /** * Loads an extended property file and performs unescaping of "," and "=" entries.<p> * * @param stream the input stream to read the properties from * * @return the initialized extended properties * * @throws IOException in case of IO errors */ public static ExtendedProperties loadProperties(InputStream stream) throws IOException { ExtendedProperties properties = new ExtendedProperties(); properties.load(stream); unescapeProperties(properties); return properties; } /** * Loads an extended property file and performs unescaping of "," and "=" entries.<p> * * @param file the file to read the properties from * * @return the initialized extended properties * * @throws IOException in case of IO errors */ public static ExtendedProperties loadProperties(String file) throws IOException { FileInputStream input = null; ExtendedProperties properties = null; try { input = new FileInputStream(new File(file)); properties = new ExtendedProperties(); properties.load(input); input.close(); } catch (IOException e) { try { if (input != null) { input.close(); } } catch (Exception ex) { // nothing we can do } throw e; } unescapeProperties(properties); return properties; } /** * Unescapes the given properties, unescaping "," and "=" entries.<p> * * @param properties the properties to adjust */ public static void unescapeProperties(ExtendedProperties properties) { for (Iterator i = properties.entrySet().iterator(); i.hasNext();) { Map.Entry entry = (Map.Entry) i.next(); String key = (String) entry.getKey(); Object obj = entry.getValue(); String[] value = {}; if (obj instanceof Vector) { value = (String[]) ((Vector) obj).toArray(value); } else { String[] v = { (String) obj }; value = v; } for (int j = 0; j < value.length; j++) { value[j] = CmsStringUtil.substitute(value[j], "\\,", ","); value[j] = CmsStringUtil.substitute(value[j], "\\=", "="); } if (value.length > 1) { properties.put(key, new Vector(Arrays.asList(value))); } else { properties.put(key, value[0]); } } } }