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    1   /*
    2    * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/java/org/apache/commons/httpclient/WireLogInputStream.java,v 1.15 2004/06/24 21:39:52 mbecke Exp $
    3    * $Revision: 480424 $
    4    * $Date: 2006-11-29 06:56:49 +0100 (Wed, 29 Nov 2006) $
    5    *
    6    * ====================================================================
    7    *
    8    *  Licensed to the Apache Software Foundation (ASF) under one or more
    9    *  contributor license agreements.  See the NOTICE file distributed with
    10   *  this work for additional information regarding copyright ownership.
    11   *  The ASF licenses this file to You under the Apache License, Version 2.0
    12   *  (the "License"); you may not use this file except in compliance with
    13   *  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, software
    18   *  distributed under the License is distributed on an "AS IS" BASIS,
    19   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    20   *  See the License for the specific language governing permissions and
    21   *  limitations under the License.
    22   * ====================================================================
    23   *
    24   * This software consists of voluntary contributions made by many
    25   * individuals on behalf of the Apache Software Foundation.  For more
    26   * information on the Apache Software Foundation, please see
    27   * <http://www.apache.org/>.
    28   *
    29   */
    30
    31  package org.apache.commons.httpclient;
    32
    33  import java.io.FilterInputStream;
    34  import java.io.IOException;
    35  import java.io.InputStream;
    36
    37  /**
    38   * Logs all data read to the wire LOG.
    39   *
    40   * @author Ortwin Gl?ck
    41   * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
    42   * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a>
    43   *
    44   * @since 2.0
    45   */
    46  class WireLogInputStream extends FilterInputStream {
    47
    48      /** Original input stream. */
    49      private InputStream in;
    50
    51      /** The wire log to use for writing. */
    52      private Wire wire;
    53
    54      /**
    55       * Create an instance that wraps the specified input stream.
    56       * @param in The input stream.
    57       * @param wire The wire log to use.
    58       */
    59      public WireLogInputStream(InputStream in, Wire wire) {
    60          super(in);
    61          this.in = in;
    62          this.wire = wire;
    63      }
    64      /**
    65       *
    66       * @see java.io.InputStream#read(byte[], int, int)
    67       */
    68      public int read(byte[] b, int off, int len) throws IOException {
    69          int l = this.in.read(b,  off,  len);
    70          if (l > 0) {
    71              wire.input(b, off, l);
    72          }
    73          return l;
    74      }
    75
    76      /**
    77       *
    78       * @see java.io.InputStream#read()
    79       */
    80      public int read() throws IOException {
    81          int l = this.in.read();
    82          if (l > 0) {
    83              wire.input(l);
    84          }
    85          return l;
    86      }
    87
    88      /**
    89       *
    90       * @see java.io.InputStream#read(byte[])
    91       */
    92      public int read(byte[] b) throws IOException {
    93          int l = this.in.read(b);
    94          if (l > 0) {
    95              wire.input(b, 0, l);
    96          }
    97          return l;
    98      }
    99  }