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1: /* 2: * ParameterList.java 3: * Copyright (C) 2003 The Free Software Foundation 4: * 5: * This file is part of GNU inetlib, a library. 6: * 7: * GNU inetlib is free software; you can redistribute it and/or modify 8: * it under the terms of the GNU General Public License as published by 9: * the Free Software Foundation; either version 2 of the License, or 10: * (at your option) any later version. 11: * 12: * GNU inetlib is distributed in the hope that it will be useful, 13: * but WITHOUT ANY WARRANTY; without even the implied warranty of 14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15: * GNU General Public License for more details. 16: * 17: * You should have received a copy of the GNU General Public License 18: * along with this library; if not, write to the Free Software 19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20: * 21: * Linking this library statically or dynamically with other modules is 22: * making a combined work based on this library. Thus, the terms and 23: * conditions of the GNU General Public License cover the whole 24: * combination. 25: * 26: * As a special exception, the copyright holders of this library give you 27: * permission to link this library with independent modules to produce an 28: * executable, regardless of the license terms of these independent 29: * modules, and to copy and distribute the resulting executable under 30: * terms of your choice, provided that you also meet, for each linked 31: * independent module, the terms and conditions of the license of that 32: * module. An independent module is a module which is not derived from 33: * or based on this library. If you modify this library, you may extend 34: * this exception to your version of the library, but you are not 35: * obliged to do so. If you do not wish to do so, delete this 36: * exception statement from your version. 37: */ 38: 39: package gnu.inet.smtp; 40: 41: import java.util.ArrayList; 42: import java.util.List; 43: 44: /** 45: * A list of ESMTP parameters. 46: * 47: * @author <a href="mailto:dog@gnu.org">Chris Burdess</a> 48: */ 49: public final class ParameterList 50: { 51: 52: private List parameters = new ArrayList(); 53: 54: /** 55: * Returns the number of parameters in the list. 56: */ 57: public int size() 58: { 59: synchronized (parameters) 60: { 61: return parameters.size(); 62: } 63: } 64: 65: /** 66: * Returns the parameter at the specified index. 67: */ 68: public Parameter get(int index) 69: { 70: synchronized (parameters) 71: { 72: return(Parameter) parameters.get(index); 73: } 74: } 75: 76: /** 77: * Adds a new parameter to the list. 78: */ 79: public void add(Parameter parameter) 80: { 81: synchronized (parameters) 82: { 83: parameters.add(parameter); 84: } 85: } 86: 87: /** 88: * String form. 89: */ 90: public String toString() 91: { 92: synchronized (parameters) 93: { 94: int len = parameters.size(); 95: if (len == 0) 96: { 97: return ""; 98: } 99: StringBuffer buffer = new StringBuffer(); 100: buffer.append(parameters.get(0)); 101: for (int i = 1; i < len; i++) 102: { 103: buffer.append(' '); 104: buffer.append(parameters.get(i)); 105: } 106: return buffer.toString(); 107: } 108: } 109: 110: }