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      1 /*
      2  * $HeadURL:https://svn.apache.org/repos/asf/jakarta/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/message/ParserCursor.java $
      3  * $Revision:589325 $
      4  * $Date:2007-10-28 11:37:56 +0100 (Sun, 28 Oct 2007) $
      5  *
      6  * ====================================================================
      7  * Licensed to the Apache Software Foundation (ASF) under one
      8  * or more contributor license agreements.  See the NOTICE file
      9  * distributed with this work for additional information
     10  * regarding copyright ownership.  The ASF licenses this file
     11  * to you under the Apache License, Version 2.0 (the
     12  * "License"); you may not use this file except in compliance
     13  * with the License.  You may obtain a copy of the License at
     14  *
     15  *   http://www.apache.org/licenses/LICENSE-2.0
     16  *
     17  * Unless required by applicable law or agreed to in writing,
     18  * software distributed under the License is distributed on an
     19  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     20  * KIND, either express or implied.  See the License for the
     21  * specific language governing permissions and limitations
     22  * under the License.
     23  * ====================================================================
     24  *
     25  * This software consists of voluntary contributions made by many
     26  * individuals on behalf of the Apache Software Foundation.  For more
     27  * information on the Apache Software Foundation, please see
     28  * <http://www.apache.org/>.
     29  *
     30  */
     31 
     32 package org.apache.http.message;
     33 
     34 import org.apache.http.util.CharArrayBuffer;
     35 
     36 /**
     37  * This class represents a context of a parsing operation:
     38  * <ul>
     39  *  <li>the current position the parsing operation is expected to start at</li>
     40  *  <li>the bounds limiting the scope of the parsing operation</li>
     41  * </ul>
     42  *
     43  * @author <a href="mailto:oleg at ural.com">Oleg Kalnichevski</a>
     44  *
     45  * @deprecated Please use {@link java.net.URL#openConnection} instead.
     46  *     Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a>
     47  *     for further details.
     48  */
     49 @Deprecated
     50 public class ParserCursor {
     51 
     52     private final int lowerBound;
     53     private final int upperBound;
     54     private int pos;
     55 
     56     public ParserCursor(int lowerBound, int upperBound) {
     57         super();
     58         if (lowerBound < 0) {
     59             throw new IndexOutOfBoundsException("Lower bound cannot be negative");
     60         }
     61         if (lowerBound > upperBound) {
     62             throw new IndexOutOfBoundsException("Lower bound cannot be greater then upper bound");
     63         }
     64         this.lowerBound = lowerBound;
     65         this.upperBound = upperBound;
     66         this.pos = lowerBound;
     67     }
     68 
     69     public int getLowerBound() {
     70         return this.lowerBound;
     71     }
     72 
     73     public int getUpperBound() {
     74         return this.upperBound;
     75     }
     76 
     77     public int getPos() {
     78         return this.pos;
     79     }
     80 
     81     public void updatePos(int pos) {
     82         if (pos < this.lowerBound) {
     83             throw new IndexOutOfBoundsException();
     84         }
     85         if (pos > this.upperBound) {
     86             throw new IndexOutOfBoundsException();
     87         }
     88         this.pos = pos;
     89     }
     90 
     91     public boolean atEnd() {
     92         return this.pos >= this.upperBound;
     93     }
     94 
     95     public String toString() {
     96         CharArrayBuffer buffer = new CharArrayBuffer(16);
     97         buffer.append('[');
     98         buffer.append(Integer.toString(this.lowerBound));
     99         buffer.append('>');
    100         buffer.append(Integer.toString(this.pos));
    101         buffer.append('>');
    102         buffer.append(Integer.toString(this.upperBound));
    103         buffer.append(']');
    104         return buffer.toString();
    105     }
    106 
    107 }
    108