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/* Fetch an URL's contents.
* Copyright (C) 2001, 2008, 2015-2016 Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gnu.gettext;
import java.io.*;
import java.net.*;
/**
* Fetch an URL's contents and emit it to standard output.
* Exit code: 0 = success
* 1 = failure
* 2 = timeout
* @author Bruno Haible
*/
public class GetURL {
// Use a separate thread to signal a timeout error if the URL cannot
// be accessed and completely read within a given amount of time.
private static long timeout = 30*1000; // 30 seconds
private boolean done;
private Thread timeoutThread;
public void fetch (String s) {
URL url;
try {
url = new URL(s);
} catch (MalformedURLException e) {
System.exit(1);
return;
}
done = false;
timeoutThread =
new Thread() {
public void run () {
try {
sleep(timeout);
if (!done) {
System.exit(2);
}
} catch (InterruptedException e) {
}
}
};
timeoutThread.start();
try {
InputStream istream = new BufferedInputStream(url.openStream());
OutputStream ostream = new BufferedOutputStream(System.out);
for (;;) {
int b = istream.read();
if (b < 0) break;
ostream.write(b);
}
ostream.close();
System.out.flush();
istream.close();
} catch (IOException e) {
//e.printStackTrace();
System.exit(1);
}
done = true;
}
public static void main (String[] args) {
if (args.length != 1)
System.exit(1);
(new GetURL()).fetch(args[0]);
System.exit(0);
}
}
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