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Java > Open Source Codes > org > pdfbox > io > RandomAccessFile


1 /**
2  * Copyright (c) 2006, www.pdfbox.org
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  * 3. Neither the name of pdfbox; nor the names of its
14  * contributors may be used to endorse or promote products derived from this
15  * software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20  * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * http://www.pdfbox.org
29  *
30  */
31 package org.pdfbox.io;
32
33 import java.io.File JavaDoc;
34 import java.io.FileNotFoundException JavaDoc;
35 import java.io.IOException JavaDoc;
36
37 /**
38  * An interface to allow temp PDF data to be stored in a scratch
39  * file on the disk to reduce memory consumption.
40  *
41  * @author <a HREF="mailto:ben@benlitchfield.com">Ben Litchfield</a>
42  * @version $Revision: 1.2 $
43  */
44 public class RandomAccessFile implements RandomAccess
45 {
46     private java.io.RandomAccessFile JavaDoc ras;
47  
48     /**
49      * Constructor.
50      *
51      * @param file The file to write the data to.
52      * @param mode The writing mode.
53      * @throws FileNotFoundException If the file cannot be created.
54      */
55     public RandomAccessFile(File JavaDoc file, String JavaDoc mode) throws FileNotFoundException JavaDoc
56     {
57         ras = new java.io.RandomAccessFile JavaDoc(file, mode);
58     }
59
60     /**
61      * {@inheritDoc}
62      */
63     public void close() throws IOException JavaDoc
64     {
65         ras.close();
66     }
67
68     /**
69      * {@inheritDoc}
70      */
71     public void seek(long position) throws IOException JavaDoc
72     {
73         ras.seek(position);
74     }
75
76     /**
77      * {@inheritDoc}
78      */
79     public int read() throws IOException JavaDoc
80     {
81         return ras.read();
82     }
83
84     /**
85      * {@inheritDoc}
86      */
87     public int read(byte[] b, int offset, int length) throws IOException JavaDoc
88     {
89         return ras.read(b, offset, length);
90     }
91
92     /**
93      * {@inheritDoc}
94      */
95     public long length() throws IOException JavaDoc
96     {
97         return ras.length();
98     }
99
100     /**
101      * {@inheritDoc}
102      */
103     public void write(byte[] b, int offset, int length) throws IOException JavaDoc
104     {
105         ras.write(b, offset, length);
106     }
107
108     /**
109      * {@inheritDoc}
110      */
111     public void write(int b) throws IOException JavaDoc
112     {
113         ras.write(b);
114     }
115 }
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