001 package org.apache.fulcrum.parser;
002
003
004 /*
005 * Licensed to the Apache Software Foundation (ASF) under one
006 * or more contributor license agreements. See the NOTICE file
007 * distributed with this work for additional information
008 * regarding copyright ownership. The ASF licenses this file
009 * to you under the Apache License, Version 2.0 (the
010 * "License"); you may not use this file except in compliance
011 * with the License. You may obtain a copy of the License at
012 *
013 * http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing,
016 * software distributed under the License is distributed on an
017 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
018 * KIND, either express or implied. See the License for the
019 * specific language governing permissions and limitations
020 * under the License.
021 */
022
023
024 import java.net.URLDecoder;
025 import java.util.StringTokenizer;
026
027 /**
028 * An extension that parses a String for name/value pairs.
029 *
030 * @author <a href="mailto:jmcnally@collab.net">John McNally</a>
031 * @version $Id: StringValueParser.java 670329 2008-06-22 09:35:12Z tv $
032 */
033 public class StringValueParser
034 extends BaseValueParser
035 {
036 /**
037 * Parses a String using a single delimiter.
038 *
039 * @param s a <code>String</code> value
040 * @param delim a <code>char</code> value
041 * @param urlDecode a <code>boolean</code> value
042 * @exception Exception Error decoding name/value pairs.
043 */
044 public void parse(String s, char delim, boolean urlDecode)
045 throws Exception
046 {
047 String delimChar = String.valueOf(delim);
048 StringTokenizer st = new StringTokenizer(s, delimChar);
049 boolean isNameTok = true;
050 String pathPart = null;
051 String key = null;
052 while (st.hasMoreTokens())
053 {
054 String tok = st.nextToken();
055 if ( urlDecode )
056 {
057 tok = URLDecoder.decode(tok, getCharacterEncoding());
058 }
059
060 if (isNameTok)
061 {
062 key = tok;
063 isNameTok = false;
064 }
065 else
066 {
067 pathPart = tok;
068 if (key != null && key.length() > 0)
069 {
070 add (convert(key), pathPart);
071 }
072 isNameTok = true;
073 }
074 }
075 }
076
077 public void parse(String s, char paramDelim, char pairDelim,
078 boolean urlDecode)
079 throws Exception
080 {
081 if ( paramDelim == pairDelim )
082 {
083 parse(s, paramDelim, urlDecode);
084 }
085 else
086 {
087 String delimChar = String.valueOf(paramDelim);
088 StringTokenizer st = new StringTokenizer(s, delimChar);
089
090 while (st.hasMoreTokens())
091 {
092 String pair = st.nextToken();
093 int pos = pair.indexOf(pairDelim);
094 String name = pair.substring(0, pos);
095 String value = pair.substring(pos+1);
096
097 if ( urlDecode )
098 {
099 name = URLDecoder.decode(name, getCharacterEncoding());
100 value = URLDecoder.decode(value, getCharacterEncoding());
101 }
102
103 if (name.length() > 0)
104 {
105 add (convert(name), value);
106 }
107 }
108 }
109 }
110 }