name.martingeisse.webide.process.NodejsCompanionProcess.java Source code

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Here is the source code for name.martingeisse.webide.process.NodejsCompanionProcess.java

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/**
 * Copyright (c) 2010 Martin Geisse
 *
 * This file is distributed under the terms of the MIT license.
 */

package name.martingeisse.webide.process;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import name.martingeisse.webide.application.Configuration;

import org.apache.commons.exec.CommandLine;
import org.apache.commons.exec.Executor;
import org.apache.commons.exec.PumpStreamHandler;

/**
 * This class is used for NodeJS-based companion processes.
 */
public class NodejsCompanionProcess extends CompanionProcess {

    /**
     * the mainFile
     */
    private final File mainFile;

    /**
     * Constructor.
     * @param mainFile the main JS file to execute
     */
    public NodejsCompanionProcess(File mainFile) {
        this.mainFile = mainFile;
    }

    /* (non-Javadoc)
     * @see name.martingeisse.webide.process.CompanionProcess#buildCommandLine()
     */
    @Override
    protected CommandLine buildCommandLine() {
        CommandLine commandLine = new CommandLine(Configuration.getBashPath());
        commandLine.addArgument("--login");
        commandLine.addArgument("-c");
        commandLine.addArgument("node " + mainFile.getName() + " " + getCompanionId(), false);
        return commandLine;
    }

    /* (non-Javadoc)
     * @see name.martingeisse.webide.process.CompanionProcess#buildEnvironment()
     */
    @Override
    protected Map<String, String> buildEnvironment() {
        Map<String, String> environment = new HashMap<String, String>();
        environment.put("NODE_PATH", new File("lib/node_modules").getAbsolutePath());
        return environment;
    }

    /* (non-Javadoc)
     * @see name.martingeisse.webide.process.CompanionProcess#configureExecutor(org.apache.commons.exec.Executor)
     */
    @Override
    protected void configureExecutor(Executor executor) {
        super.configureExecutor(executor);
        ByteArrayInputStream inputStream = null;
        OutputStream outputStream = System.err;
        OutputStream errorStream = System.err;
        executor.setStreamHandler(new PumpStreamHandler(outputStream, errorStream, inputStream));
        executor.setWorkingDirectory(mainFile.getParentFile());
    }

}