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// Copyright Hugh Perkins 2009
// hughperkins@gmail.com http://manageddreams.com
//
// 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 2 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 in the file licence.txt; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
// 1307 USA
// You can find the licence also on the web at:
// http://www.opensource.org/licenses/gpl-license.php
//
// ======================================================================================
//
package hughai.utils;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.InputStreamReader;
import hughai.PlayerObjects;
//should probably start using log4j or similar so wee don't have to
//create an instance passing in PlayerObjects, but can just have static
//methods
public class Exec {
PlayerObjects playerObjects;
public Exec( PlayerObjects playerObjects ) {
this.playerObjects = playerObjects;
}
// executes commandstring, and returns a string with output
// from errorstream and inversely named "input"stream
// commandstring includes arguments
public String exec( String commandstring, String dir ) throws Exception {
StringBuilder output = new StringBuilder();
output.append( "Executing " + commandstring + "\nin " + dir + "\n" );
Process process = null;
try {
process =
Runtime.getRuntime().exec( commandstring, null,
new File( dir ) );
} catch( Exception e ) {
playerObjects.getLogFile().WriteLine( Formatting.exceptionToStackTrace( e ) );
throw new RuntimeException( e );
}
output.append("executed" + "\n");
try {
process.waitFor();
} catch( Exception e ) {
playerObjects.getLogFile().WriteLine( Formatting.exceptionToStackTrace( e ) );
throw new RuntimeException( e );
}
output.append("exit value: " + process.exitValue() + "\n" );
InputStreamReader errorStreamReader = new InputStreamReader( process.getErrorStream() );
BufferedReader errorReader = new BufferedReader(
errorStreamReader );
String line;
// if( errorReader.ready() ) {
try {
line = errorReader.readLine();
while( line != null ) {
output.append( "error stream: " + line + "\n" );
line = null;
// if( errorReader.ready() ) {
line = errorReader.readLine();
// }
}
// }
output.append("errorstream read" + "\n");
InputStreamReader outStreamReader = new InputStreamReader( process.getInputStream() );
BufferedReader outReader = new BufferedReader(
outStreamReader );
line = outReader.readLine();
while( line != null ) {
output.append( "out stream: " + line + "\n" );
line = errorReader.readLine();
}
} catch( Exception e ) {
playerObjects.getLogFile().WriteLine( Formatting.exceptionToStackTrace( e ) );
throw new RuntimeException( e );
}
output.append("outputstream read" + "\n");
if( process.exitValue() != 0 ) {
throw new Exception( output.toString() );
}
return output.toString();
}
}
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