1 | /*
|
---|
2 | * Copyright 2003-2004 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 | */
|
---|
17 |
|
---|
18 | package org.apache.tools.ant.taskdefs.optional.perforce;
|
---|
19 |
|
---|
20 | import java.io.OutputStream;
|
---|
21 | import java.io.ByteArrayOutputStream;
|
---|
22 | import java.io.IOException;
|
---|
23 |
|
---|
24 | /**
|
---|
25 | * heavily inspired from LogOutputStream
|
---|
26 | * this stream class calls back the P4Handler on each line of stdout or stderr read
|
---|
27 | */
|
---|
28 | public class P4OutputStream extends OutputStream {
|
---|
29 | private P4Handler handler;
|
---|
30 | private ByteArrayOutputStream buffer = new ByteArrayOutputStream();
|
---|
31 | private boolean skip = false;
|
---|
32 |
|
---|
33 | /**
|
---|
34 | * creates a new P4OutputStream for a P4Handler
|
---|
35 | * @param handler the handler which will process the streams
|
---|
36 | */
|
---|
37 | public P4OutputStream(P4Handler handler) {
|
---|
38 | this.handler = handler;
|
---|
39 | }
|
---|
40 |
|
---|
41 | /**
|
---|
42 | * Write the data to the buffer and flush the buffer, if a line
|
---|
43 | * separator is detected.
|
---|
44 | *
|
---|
45 | * @param cc data to log (byte).
|
---|
46 | * @throws IOException IOException if an I/O error occurs. In particular,
|
---|
47 | * an <code>IOException</code> may be thrown if the
|
---|
48 | * output stream has been closed.
|
---|
49 | */
|
---|
50 | public void write(int cc) throws IOException {
|
---|
51 | final byte c = (byte) cc;
|
---|
52 | if ((c == '\n') || (c == '\r')) {
|
---|
53 | if (!skip) {
|
---|
54 | processBuffer();
|
---|
55 | }
|
---|
56 | } else {
|
---|
57 | buffer.write(cc);
|
---|
58 | }
|
---|
59 | skip = (c == '\r');
|
---|
60 | }
|
---|
61 |
|
---|
62 |
|
---|
63 | /**
|
---|
64 | * Converts the buffer to a string and sends it to <code>processLine</code>
|
---|
65 | */
|
---|
66 | protected void processBuffer() {
|
---|
67 | handler.process(buffer.toString());
|
---|
68 | buffer.reset();
|
---|
69 | }
|
---|
70 |
|
---|
71 | /**
|
---|
72 | * Writes all remaining
|
---|
73 | * @throws IOException if an I/O error occurs.
|
---|
74 | */
|
---|
75 | public void close() throws IOException {
|
---|
76 | if (buffer.size() > 0) {
|
---|
77 | processBuffer();
|
---|
78 | }
|
---|
79 | super.close();
|
---|
80 | }
|
---|
81 |
|
---|
82 | }
|
---|
83 |
|
---|
84 |
|
---|