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