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org.apache.commons.net.telnet.TelnetOutputStream	43%	70%

1		/*
2		* Copyright 2001-2005 The Apache Software Foundation
3		*
4		* Licensed under the Apache License, Version 2.0 (the "License");
5		* you may not use this file except in compliance with the License.
6		* You may obtain a copy of the License at
7		*
8		* http://www.apache.org/licenses/LICENSE-2.0
9		*
10		* Unless required by applicable law or agreed to in writing, software
11		* distributed under the License is distributed on an "AS IS" BASIS,
12		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13		* See the License for the specific language governing permissions and
14		* limitations under the License.
15		*/
16		package org.apache.commons.net.telnet;
17
18		import java.io.IOException;
19		import java.io.OutputStream;
20
21		/***
22		*
23		* <p>
24		*
25		* <p>
26		* <p>
27		* @author Daniel F. Savarese
28		***/
29
30
31		final class TelnetOutputStream extends OutputStream
32		{
33		private TelnetClient __client;
34	64	private boolean __convertCRtoCRLF = true;
35	64	private boolean __lastWasCR = false;
36
37		TelnetOutputStream(TelnetClient client)
38	64	{
39	64	__client = client;
40	64	}
41
42
43		/***
44		* Writes a byte to the stream.
45		* <p>
46		* @param ch The byte to write.
47		* @exception IOException If an error occurs while writing to the underlying
48		* stream.
49		***/
50		public void write(int ch) throws IOException
51		{
52
53	20	synchronized (__client)
54		{
55	20	ch &= 0xff;
56
57	20	if (__client._requestedWont(TelnetOption.BINARY))
58		{
59	20	if (__lastWasCR)
60		{
61	0	if (__convertCRtoCRLF)
62		{
63	0	__client._sendByte('\n');
64	0	if (ch == '\n')
65		{
66	0	__lastWasCR = false;
67	0	return ;
68		}
69		}
70	0	else if (ch != '\n')
71	0	__client._sendByte('\0');
72		}
73
74	20	__lastWasCR = false;
75
76	20	switch (ch)
77		{
78		case '\r':
79	0	__client._sendByte('\r');
80	0	__lastWasCR = true;
81	0	break;
82		case TelnetCommand.IAC:
83	0	__client._sendByte(TelnetCommand.IAC);
84	0	__client._sendByte(TelnetCommand.IAC);
85	0	break;
86		default:
87	20	__client._sendByte(ch);
88	20	break;
89		}
90		}
91	0	else if (ch == TelnetCommand.IAC)
92		{
93	0	__client._sendByte(ch);
94	0	__client._sendByte(TelnetCommand.IAC);
95		}
96		else
97	0	__client._sendByte(ch);
98	20	}
99	20	}
100
101
102		/***
103		* Writes a byte array to the stream.
104		* <p>
105		* @param buffer The byte array to write.
106		* @exception IOException If an error occurs while writing to the underlying
107		* stream.
108		***/
109		public void write(byte buffer[]) throws IOException
110		{
111	0	write(buffer, 0, buffer.length);
112	0	}
113
114
115		/***
116		* Writes a number of bytes from a byte array to the stream starting from
117		* a given offset.
118		* <p>
119		* @param buffer The byte array to write.
120		* @param offset The offset into the array at which to start copying data.
121		* @param length The number of bytes to write.
122		* @exception IOException If an error occurs while writing to the underlying
123		* stream.
124		***/
125		public void write(byte buffer[], int offset, class="keyword">int length) throws IOException
126		{
127	0	synchronized (__client)
128		{
129	0	while (length-- > 0)
130	0	write(buffer[offset++]);
131	0	}
132	0	}
133
134		/*** Flushes the stream. ***/
135		public void flush() throws IOException
136		{
137	68	__client._flushOutputStream();
138	68	}
139
140		/*** Closes the stream. ***/
141		public void close() throws IOException
142		{
143	64	__client._closeOutputStream();
144	64	}
145		}

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