1 /* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.xml.internal.ws.encoding; 27 28 import javax.xml.ws.WebServiceException; 29 import java.util.HashMap; 30 import java.util.Iterator; 31 import java.util.Map; 32 33 /** 34 * This class holds MIME parameters (attribute-value pairs). 35 * 36 * @version 1.10, 03/02/12 37 * @author John Mani 38 */ 39 40 final class ParameterList { 41 42 private final Map<String, String> list; 43 44 /** 45 * Constructor that takes a parameter-list string. The String 46 * is parsed and the parameters are collected and stored internally. 47 * A ParseException is thrown if the parse fails. 48 * Note that an empty parameter-list string is valid and will be 49 * parsed into an empty ParameterList. 50 * 51 * @param s the parameter-list string. 52 * @exception WebServiceException if the parse fails. 53 */ ParameterList(String s)54 ParameterList(String s) { 55 HeaderTokenizer h = new HeaderTokenizer(s, HeaderTokenizer.MIME); 56 HeaderTokenizer.Token tk; 57 int type; 58 String name; 59 60 list = new HashMap<String, String>(); 61 while (true) { 62 tk = h.next(); 63 type = tk.getType(); 64 65 if (type == HeaderTokenizer.Token.EOF) // done 66 return; 67 68 if ((char)type == ';') { 69 // expect parameter name 70 tk = h.next(); 71 // tolerate trailing semicolon, even though it violates the spec 72 if (tk.getType() == HeaderTokenizer.Token.EOF) 73 return; 74 // parameter name must be a MIME Atom 75 if (tk.getType() != HeaderTokenizer.Token.ATOM) 76 throw new WebServiceException(); 77 name = tk.getValue().toLowerCase(); 78 79 // expect '=' 80 tk = h.next(); 81 if ((char)tk.getType() != '=') 82 throw new WebServiceException(); 83 84 // expect parameter value 85 tk = h.next(); 86 type = tk.getType(); 87 // parameter value must be a MIME Atom or Quoted String 88 if (type != HeaderTokenizer.Token.ATOM && 89 type != HeaderTokenizer.Token.QUOTEDSTRING) 90 throw new WebServiceException(); 91 92 list.put(name, tk.getValue()); 93 } else 94 throw new WebServiceException(); 95 } 96 } 97 98 /** 99 * Return the number of parameters in this list. 100 * 101 * @return number of parameters. 102 */ size()103 int size() { 104 return list.size(); 105 } 106 107 /** 108 * Returns the value of the specified parameter. Note that 109 * parameter names are case-insensitive. 110 * 111 * @param name parameter name. 112 * @return Value of the parameter. Returns 113 * <code>null</code> if the parameter is not 114 * present. 115 */ get(String name)116 String get(String name) { 117 return list.get(name.trim().toLowerCase()); 118 } 119 120 121 /** 122 * Return an enumeration of the names of all parameters in this 123 * list. 124 * 125 * @return Enumeration of all parameter names in this list. 126 */ getNames()127 Iterator<String> getNames() { 128 return list.keySet().iterator(); 129 } 130 131 } 132