1 /**************************************************************
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 
24 package com.sun.star.script.framework.io;
25 
26 import com.sun.star.io.XInputStream;
27 import java.io.InputStream;
28 import java.io.IOException;
29 
30 public class XInputStreamImpl implements XInputStream
31 {
32     InputStream is;
XInputStreamImpl( InputStream is )33     public XInputStreamImpl( InputStream is )
34     {
35         this.is = is;
36     }
37 
readBytes( byte[][] aData, int nBytesToRead )38     public int readBytes( /*OUT*/byte[][] aData, /*IN*/int nBytesToRead ) throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException
39     {
40         aData[ 0 ] = new byte[ nBytesToRead ];
41 
42         int totalBytesRead = 0;
43 
44         try
45         {
46             int bytesRead = 0;
47             while ( ( nBytesToRead > 0 ) && ( bytesRead = is.read( aData[ 0 ], totalBytesRead, nBytesToRead ) ) > 0 )
48             {
49                 totalBytesRead += bytesRead;
50                 nBytesToRead -= bytesRead;
51             }
52             if ( totalBytesRead < aData[ 0 ].length )
53             {
54                 byte[] out = new byte[ totalBytesRead ];
55                 System.arraycopy( aData[ 0 ], 0, out, 0, totalBytesRead );
56                 aData[ 0 ] = out;
57             }
58         }
59         catch ( IOException e )
60         {
61             throw new com.sun.star.io.IOException( e.toString() );
62         }
63         catch ( IndexOutOfBoundsException aie )
64         {
65             throw new com.sun.star.io.BufferSizeExceededException( aie.toString() );
66         }
67         return totalBytesRead;
68     }
69 
readSomeBytes( byte[][] aData, int nMaxBytesToRead )70     public int readSomeBytes( /*OUT*/byte[][] aData, /*IN*/int nMaxBytesToRead ) throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException
71     {
72         int bytesToRead = nMaxBytesToRead;
73         int availableBytes = available();
74         if ( 0 < availableBytes && availableBytes < nMaxBytesToRead )
75         {
76             bytesToRead = availableBytes;
77         }
78         int read =  readBytes( aData, bytesToRead );
79         return read;
80     }
81 
skipBytes( int nBytesToSkip )82     public void skipBytes( /*IN*/int nBytesToSkip ) throws com.sun.star.io.NotConnectedException, com.sun.star.io.BufferSizeExceededException, com.sun.star.io.IOException
83     {
84         long bytesSkipped = 0;
85         try
86         {
87             bytesSkipped = is.skip( (long)nBytesToSkip );
88         }
89         catch ( IOException e )
90         {
91             throw new com.sun.star.io.IOException( e.toString() );
92         }
93     }
94 
available( )95     public int available(  ) throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException
96     {
97         int bytesAvail = 0;
98         try
99         {
100             bytesAvail = is.available();
101         }
102         catch ( IOException e )
103         {
104             throw new com.sun.star.io.IOException( e.toString() );
105         }
106         return bytesAvail;
107     }
108 
closeInput( )109     public void closeInput(  ) throws com.sun.star.io.NotConnectedException, com.sun.star.io.IOException
110     {
111         try
112         {
113             is.close();
114         }
115         catch( IOException e )
116         {
117             throw new com.sun.star.io.IOException( e.toString() );
118         }
119     }
120 
121 }
122