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package com.sun.enterprise.admin.cli;

import com.sun.enterprise.universal.process.ProcessStreamDrainer;

/**
 *  CLIProcessExecutor
 *  A simple process executor class that is used by CLI.
 *  @author  [email protected]
 */
public class CLIProcessExecutor {

    public CLIProcessExecutor() {
        process = null;
    }

    /**
     * This method invokes the runtime exec
     * @param cmd the command to execute
     * @param wait if true, wait for process to end.
     * @exception Exception
     */
    public void execute(String name, String[] cmd, boolean wait)
                                throws Exception {
        process = Runtime.getRuntime().exec(cmd);
        ProcessStreamDrainer.redirect(name, process);

        try {
            if (wait) {
                process.waitFor();
            }
        } catch (InterruptedException ie) {
        }
    }

    /**
     * return the exit value of this process.
     * if process is null, then there is no process running
     * therefore the return value is 0.
     */
    public int exitValue() {
        if (process == null)
            return -1;
        return process.exitValue();
    }

    private Process process;
}