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Java > Open Source Codes > com > imagero > uio > io > MultiByteArrayOutputStream


1 /*
2  * Copyright (c) Andrey Kuznetsov. All Rights Reserved.
3  *
4  * http://uio.imagero.com
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * o Redistributions of source code must retain the above copyright notice,
10  * this list of conditions and the following disclaimer.
11  *
12  * o Redistributions in binary form must reproduce the above copyright notice,
13  * this list of conditions and the following disclaimer in the documentation
14  * and/or other materials provided with the distribution.
15  *
16  * o Neither the name of imagero Andrei Kouznetsov nor the names of
17  * its contributors may be used to endorse or promote products derived
18  * from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
29  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */

32 package com.imagero.uio.io;
33
34
35 import com.imagero.uio.Sys;
36
37 import java.io.OutputStream JavaDoc;
38 import java.util.Vector JavaDoc;
39
40 /**
41  * MultiByteArrayOutputStream.java
42  * <br>
43  * It's like ByteArrayOutputStream, but with multiple arrays <br>
44  * Array size is defined through <code>sizeX</code>;
45  *
46  * @author Kouznetsov Andrei
47  */

48 public class MultiByteArrayOutputStream extends OutputStream JavaDoc {
49
50     Vector JavaDoc v;
51     int totalCount;
52
53     int sizeX = 1024;
54
55     protected byte buf[];
56
57     protected int pos;
58
59
60     public MultiByteArrayOutputStream() {
61         this(1024);
62     }
63
64     public MultiByteArrayOutputStream(int sizeX) {
65         this.sizeX = sizeX;
66         this.v = new Vector JavaDoc();
67         nextArray();
68     }
69
70     protected void nextArray() {
71         byte[] b = new byte[this.sizeX];
72         v.addElement(b);
73         this.buf = b;
74         this.pos = 0;
75     }
76
77     public synchronized void write(byte b[], int off, int len) {
78         for(int i = off; i < len; i++) {
79             write(b[off + i]);
80         }
81     }
82
83     public synchronized void write(int b) {
84         if(pos == sizeX) {
85             nextArray();
86         }
87         totalCount++;
88         buf[pos++] = (byte) (b & 0xFF);
89     }
90
91     public static void printHex(int value) {
92         value = value & 0xFF;
93         String JavaDoc s = Integer.toHexString(value);
94         if(s.length() == 1) {
95             Sys.out.print("0");
96         }
97         Sys.out.print(s);
98         Sys.out.print(" ");
99     }
100
101     public void reset() {
102         totalCount = 0;
103         v = new Vector JavaDoc();
104         nextArray();
105     }
106
107     public Vector JavaDoc getVector() {
108
109         int lastIndex = this.v.size() - 1;
110         byte[] b = (byte[]) this.v.elementAt(lastIndex);
111         byte[] b2 = new byte[pos];
112         System.arraycopy(b, 0, b2, 0, pos);
113         this.v.setElementAt(b2, lastIndex);
114
115         return this.v;
116     }
117
118     public void flush() {
119     }
120
121     public void close() {
122     }
123
124     public int length() {
125         return (this.v.size() - 1) * this.sizeX + this.pos;
126     }
127 }
128
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