org.openxma.rwt.bridge.Deployer Maven / Gradle / Ivy

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package org.openxma.rwt.bridge;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.Set;

import javax.servlet.ServletContext;

public class Deployer {
	
	protected static final String RESOURCE_BASE = "/WEB-INF/"; //$NON-NLS-1$	
	
	protected ServletContext context;	
	
	
	public Deployer(ServletContext context) {
		this.context = context;
	}
	
	/**
	 * copyResource is a convenience method to recursively copy resources from the ServletContext to
	 * an installation target. The default behavior will create a directory if the resourcepath ends
	 * in '/' and a file otherwise.
	 * @param resourcePath - The resource root path
	 * @param target - The root location where resources are to be copied
	 */
	protected void copyResource(String resourcePath, File target) {
		if (resourcePath.endsWith("/")) { //$NON-NLS-1$
			target.mkdir();
			Set paths = context.getResourcePaths(resourcePath);
			if (paths == null)
				return;
			for (Iterator it = paths.iterator(); it.hasNext();) {
				String path = (String) it.next();
				File newFile = new File(target, path.substring(resourcePath.length()));
				copyResource(path, newFile);
			}
		} else {
			try {
				if (target.createNewFile()) {
					InputStream is = null;
					OutputStream os = null;
					try {
						is = context.getResourceAsStream(resourcePath);
						if (is == null)
							return;
						os = new FileOutputStream(target);
						byte[] buffer = new byte[8192];
						int bytesRead = is.read(buffer);
						while (bytesRead != -1) {
							os.write(buffer, 0, bytesRead);
							bytesRead = is.read(buffer);
						}
					} finally {
						if (is != null)
							is.close();

						if (os != null)
							os.close();
					}
				}
			} catch (IOException e) {
				context.log("Error copying resources", e); //$NON-NLS-1$
			}
		}
	}

	/**
	 * deleteDirectory is a convenience method to recursively delete a directory
	 * @param directory - the directory to delete.
	 * @return was the delete successful
	 */
	protected static boolean deleteDirectory(File directory) {
		if (directory.isDirectory()) {
			File[] files = directory.listFiles();
			for (int i = 0; i < files.length; i++) {
				if (files[i].isDirectory()) {
					deleteDirectory(files[i]);
				} else {
					files[i].delete();
				}
			}
		}
		return directory.delete();
	}		

}