1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the BSD license.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*************************************************************************/
import com.sun.star.io.BufferSizeExceededException;
import com.sun.star.io.NotConnectedException;
import com.sun.star.io.XInputStream;
import com.sun.star.io.XSeekable;
/**
* XInputStream interface implementation.
*/
public class MyInputStream implements XSeekable, XInputStream {
/**
* Member properties
*/
private int offset = 0;
private int read = offset;
private byte[] bigbuffer;
/**
* Constructor
*/
public MyInputStream() {
}
// XSeekable. Makes it possible to seek to a certain position within a stream.
/**
* Returns the length of the stream.
*
*@return long The length of the storage medium on which the stream works.
*/
public synchronized long getLength()
throws com.sun.star.io.IOException,com.sun.star.uno.RuntimeException {
if ( bigbuffer != null ) {
return bigbuffer.length - offset;
} else {
return 0;
}
}
/**
* Returns the current offset of the stream.
*
*@return long The current offset in this stream.
*/
public synchronized long getPosition()
throws com.sun.star.io.IOException,com.sun.star.uno.RuntimeException {
return read - offset ;
}
/**
* Changes the seek pointer to a new location relative to the beginning of the stream.
*/
public synchronized void seek(long p0)
throws IllegalArgumentException, com.sun.star.io.IOException,
com.sun.star.uno.RuntimeException {
if( bigbuffer != null ) {
p0 +=offset;
read = ( int ) p0;
if( read < offset || read > bigbuffer.length )
throw new IllegalArgumentException();
}
}
// XInputStream. This is the basic interface to read data from a stream.
/**
* States how many bytes can be read or skipped without blocking.
*
*@return int If not available, then returned 0
*/
public synchronized int available()
throws NotConnectedException, com.sun.star.io.IOException,
com.sun.star.uno.RuntimeException {
if( bigbuffer != null )
return ( bigbuffer.length - read );
else
return 0;
}
/**
* Closes the stream. .
*/
public void closeInput()
throws NotConnectedException,com.sun.star.io.IOException,
com.sun.star.uno.RuntimeException {
read = -1;
}
/**
* Reads the specified number of bytes in the given sequence.
*/
public synchronized int readBytes(byte[][] p0, int p1)
throws NotConnectedException, BufferSizeExceededException,
com.sun.star.io.IOException, com.sun.star.uno.RuntimeException {
if( bigbuffer != null ) {
if( read == -1 )
return 0;
int i = 0;
int available;
if ( p1 > bigbuffer.length - read )
available = bigbuffer.length - read;
else
available = p1;
p0[0] = new byte[p1];
while( available != 0 ) {
p0[0][i++] = bigbuffer[read++];
--available;
}
return i;
} else {
p0[0] = new byte[0];
return 0;
}
}
/**
* Reads the available number of bytes at maximum nMaxBytesToRead .
* This method blocks the thread until at least one byte is available.
*/
public synchronized int readSomeBytes(byte[][] p0, int p1)
throws NotConnectedException,
BufferSizeExceededException,
com.sun.star.io.IOException,
com.sun.star.uno.RuntimeException {
return readBytes( p0,p1 );
}
/**
* Skips the next nBytesToSkip bytes (must be positive).
* It is up to the implementation whether this method is blocking the thread or not.
*/
public synchronized void skipBytes(int p0)
throws NotConnectedException, BufferSizeExceededException,
com.sun.star.io.IOException, com.sun.star.uno.RuntimeException {
read += p0;
if( read > bigbuffer.length )
read = bigbuffer.length;
if( read < offset )
read = offset;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
