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1 package com.openedit.archive.update;
2
3 import java.io.IOException  ;
4 import java.util.Iterator ;
5 import java.util.List ;
6 import java.util.Vector ;
7
8 import org.apache.commons.logging.Log;
9 import org.apache.commons.logging.LogFactory;
10
11 public class CommandLineWithOutput extends CommandLine {
12 private static final Log log = LogFactory.getLog(CommandLineWithOutput.class);
13
14 private Vector output = new Vector ();
15
16 public List getOutput() {
17 return output;
18 }
19
20 public boolean exec(String [] cmd) {
21 if ( cmd ==null)
22 return false;
23
24 output = new Vector ();
25 int exitVal = 0;
26 try {
27 Runtime runtime = Runtime.getRuntime();
28
29 log.debug("Running: " + cmd);
30 Process proc = runtime.exec(cmd);
31 manageOutputStreams(proc);
32 exitVal = proc.waitFor();
33 if (exitVal != 0) {
34 reportError(cmd);
35 }
36 log.debug("ExitValue: " + exitVal);
37 for (Iterator iter = output.iterator(); iter.hasNext();) {
38 log.debug(iter.next());
39 }
40 } catch (IOException x) {
41 reportError(cmd);
42 return false;
43 } catch (InterruptedException e) {
44 reportError(cmd);
45 return false;
46 }
47 return exitVal == 0;
48 }
49
50 private void manageOutputStreams(Process proc) {
51 errorMessagesGobbler(proc).start();
52 outputMessagesGobbler(proc).start();
53 }
54
55 private StreamGobbler outputMessagesGobbler(Process proc) {
56 StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream(),
57 "OUTPUT", output);
58 return outputGobbler;
59 }
60
61 private StreamGobbler errorMessagesGobbler(Process proc) {
62 StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream(),
63 "ERROR", output);
64 return errorGobbler;
65 }
66 } |
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