/*
* Copyright 2009 Harvard University Library
*
* This file is part of FITS (File Information Tool Set).
*
* FITS is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* FITS 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with FITS. If not, see <http://www.gnu.org/licenses/>.
*/
package edu.harvard.hul.ois.fits.tools.utils;
import java.io.*;
import java.util.List;
import edu.harvard.hul.ois.fits.exceptions.FitsToolCLIException;
public abstract class CommandLine {
public static String exec(List cmd, String directory) throws FitsToolCLIException {
String output = null;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
//Runtime rt = Runtime.getRuntime();
//Process proc = rt.exec(cmd.toString());
ProcessBuilder builder = new ProcessBuilder(cmd);
if(directory != null) {
builder.directory(new File(directory));
}
Process proc = builder.start();
/*
StringBuffer sb = new StringBuffer();
BufferedReader bro = new BufferedReader(new InputStreamReader(proc.getErrorStream()));
String line;
while ((line = bro.readLine()) != null) {
sb.append(line);
System.out.println(line);
}
// The process should be done now, but wait to be sure.
proc.waitFor();
*/
StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream(),bos);
StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream(),bos);
errorGobbler.start();
outputGobbler.start();
proc.waitFor();
errorGobbler.join();
outputGobbler.join();
//output = sb.toString();
bos.flush();
output = new String(bos.toByteArray());
}
catch (Exception e) {
throw new FitsToolCLIException("Error calling external command line routine",e);
}
finally {
try {
bos.close();
} catch (IOException e) {
throw new FitsToolCLIException("Error closing external command line output stream",e);
}
}
return output;
}
/*
public static void exec(String cmd, OutputStream output) throws Exception {
//Runtime rt = Runtime.getRuntime();
//Process proc = rt.exec(cmd.toString());
ProcessBuilder builder = new ProcessBuilder(cmd);
Process proc = builder.start();
StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream(),"ERROR", output);
StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream(),"OUTPUT", output);
errorGobbler.start();
outputGobbler.start();
proc.waitFor();
}
*/
}