01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26: package org.cougaar.glm.execution.common;
27:
28: import java.io.BufferedReader;
29: import java.io.EOFException;
30: import java.io.IOException;
31: import java.io.InputStream;
32: import java.io.InputStreamReader;
33: import java.io.Reader;
34:
35: /**
36: * An implementation of the LineReader interface that reads from an
37: * InputStream. The InputStream is wrapped in a BufferedReader and the
38: * lines are read as needed.
39: **/
40: public class InputStreamLineReader extends LineReaderBase implements
41: LineReader {
42: private static final String ack = "<ACK>";
43: BufferedReader reader;
44:
45: public InputStreamLineReader(InputStream is) {
46: reader = new BufferedReader(new InputStreamReader(is));
47: }
48:
49: public InputStreamLineReader(Reader reader) {
50: this .reader = new BufferedReader(reader);
51: }
52:
53: public String readLine() throws IOException {
54: if (reader == null)
55: throw new IOException("LineReader had been closed");
56: while (true) {
57: String result = reader.readLine();
58: if (result == null)
59: throw new EOFException();
60: while (result.trim().startsWith(ack)) {
61: result = result.substring(ack.length());
62: }
63: return result;
64: }
65: }
66:
67: public void close() throws IOException {
68: reader.close();
69: reader = null;
70: }
71: }
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