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22 * or visit www.oracle.com if you need additional information or have any |
22 * or visit www.oracle.com if you need additional information or have any |
23 * questions. |
23 * questions. |
24 */ |
24 */ |
25 package jdk.jshell.execution; |
25 package jdk.jshell.execution; |
26 |
26 |
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27 import java.io.IOException; |
27 import java.io.InputStream; |
28 import java.io.InputStream; |
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29 import java.io.OutputStream; |
28 |
30 |
29 /** |
31 /** |
30 * |
32 * |
31 * @author Jan Lahoda |
33 * @author Jan Lahoda |
32 */ |
34 */ |
37 private int start; |
39 private int start; |
38 private int end; |
40 private int end; |
39 private boolean closed; |
41 private boolean closed; |
40 |
42 |
41 @Override |
43 @Override |
42 public synchronized int read() { |
44 public synchronized int read() throws IOException { |
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45 if (start == end) { |
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46 inputNeeded(); |
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47 } |
43 while (start == end) { |
48 while (start == end) { |
44 if (closed) { |
49 if (closed) { |
45 return -1; |
50 return -1; |
46 } |
51 } |
47 try { |
52 try { |
55 } finally { |
60 } finally { |
56 start = (start + 1) % buffer.length; |
61 start = (start + 1) % buffer.length; |
57 } |
62 } |
58 } |
63 } |
59 |
64 |
60 public synchronized void write(int b) { |
65 protected void inputNeeded() throws IOException {} |
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66 |
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67 private synchronized void write(int b) { |
61 if (closed) { |
68 if (closed) { |
62 throw new IllegalStateException("Already closed."); |
69 throw new IllegalStateException("Already closed."); |
63 } |
70 } |
64 int newEnd = (end + 1) % buffer.length; |
71 int newEnd = (end + 1) % buffer.length; |
65 if (newEnd == start) { |
72 if (newEnd == start) { |
83 public synchronized void close() { |
90 public synchronized void close() { |
84 closed = true; |
91 closed = true; |
85 notifyAll(); |
92 notifyAll(); |
86 } |
93 } |
87 |
94 |
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95 public OutputStream createOutput() { |
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96 return new OutputStream() { |
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97 @Override public void write(int b) throws IOException { |
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98 PipeInputStream.this.write(b); |
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99 } |
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100 @Override |
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101 public void write(byte[] b, int off, int len) throws IOException { |
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102 for (int i = 0 ; i < len ; i++) { |
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103 write(Byte.toUnsignedInt(b[off + i])); |
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104 } |
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105 } |
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106 @Override |
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107 public void close() throws IOException { |
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108 PipeInputStream.this.close(); |
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109 } |
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110 }; |
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111 } |
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112 |
88 } |
113 } |