RunAppAction.java

package edu.stanford.hci.r3.actions.types;

import java.io.File;
import java.io.IOException;
import java.util.Map;

import edu.stanford.hci.r3.actions.R3Action;

public class RunAppAction implements R3Action {

        private String executablePath;

        public RunAppAction(File execFile) {
                executablePath = execFile.getPath();
        }

        public RunAppAction(String execName) {
                executablePath = execName;
        }

        public void invoke() {
                try {
                        File f = new File(executablePath);
                        String command = null;
                        if (!f.exists()) {
                                // this probably means it is in the path, instead of in the local directory
                                command = f.getName();
                        } else {
                                // run this file!
                                command = f.getAbsolutePath();
                        }

                        ProcessBuilder builder = new ProcessBuilder(command);
                        Map<String, String> env = builder.environment();
                        final String envPath = env.get("PATH");
                        String append = null;
                        if (envPath == null) {
                                append = "";
                        } else {
                                append = System.getProperty("path.separator") + envPath;
                        }
                        env.put("PATH", System.getProperty("java.library.path") + append);
                        builder.start();
                } catch (IOException e) {
                        e.printStackTrace();
                }
        }
}

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