URIHelper xref

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    1   /***
    2    *
    3    * Copyright 2004 Protique Ltd
    4    *
    5    * Licensed under the Apache License, Version 2.0 (the "License");
    6    * you may not use this file except in compliance with the License.
    7    * You may obtain a copy of the License at
    8    *
    9    * http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   *
    17   **/
    18  package org.codehaus.activemq.util;
    19
    20  import java.net.URI;
    21  import java.util.HashMap;
    22  import java.util.Map;
    23  import java.util.StringTokenizer;
    24
    25  /***
    26   * Some URI based helper methods.
    27   *
    28   * @version $Revision: 1.1 $
    29   */
    30  public class URIHelper {
    31
    32      /***
    33       * Parsers the query string of the URI into a map of key-value pairs
    34       */
    35      public static Map parseQuery(URI uri) {
    36          return parseQuery(uri.getQuery());
    37      }
    38
    39      /***
    40       * Parsers the query string of the URI into a map of key-value pairs
    41       */
    42      public static Map parseQuery(String query) {
    43          Map answer = new HashMap();
    44          if (query != null) {
    45              StringTokenizer iter = new StringTokenizer(query, "&");
    46              while (iter.hasMoreTokens()) {
    47                  String pair = iter.nextToken();
    48                  addKeyValuePair(answer, pair);
    49              }
    50          }
    51          return answer;
    52      }
    53
    54      protected static void addKeyValuePair(Map answer, String pair) {
    55          int idx = pair.indexOf('=');
    56          String name = null;
    57          String value = null;
    58          if (idx >= 0) {
    59              name = pair.substring(0, idx);
    60              if (++idx < pair.length()) {
    61                  value = pair.substring(idx);
    62              }
    63          }
    64          else {
    65              name = pair;
    66          }
    67          answer.put(name, value);
    68      }
    69  }