public class ResourcePhaseListener implements PhaseListener {
	public static final String RESOURCE_REQUEST_KEY = "rpl_resourcePath";

	// Example: /path/to/resources/starting/on/package/root
	// Resources.RESOURCE_DIR =
	// 		getClass().getPackage().getName().replaceAll("\\.", "/");
	private static final String ASSUMED_DIR_PREFIX = Resources.RESOURCE_DIR;

	private static Map<String, String> resourceMap;

	private void loadResource(String resourcePath) {
		InputStream is = getClass().getResourceAsStream(
				ASSUMED_DIR_PREFIX + resourcePath);

		if (is == null) {
			return;
		}

		BufferedReader br = new BufferedReader(new InputStreamReader(is));

		try {
			String line = null;
			StringBuffer resourceBuf = new StringBuffer();

			while ((line = br.readLine()) != null) {
				resourceBuf.append(line + "\n");
			}

			getResourceMap().put(resourcePath, resourceBuf.toString());
		} catch (Exception e) {
			e.printStackTrace();
		} finally {

			try {
				br.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	public void afterPhase(PhaseEvent event) {
		FacesContext context = event.getFacesContext();
		ExternalContext exContext = event.getFacesContext()
				.getExternalContext();

		Object resourcePathObj = exContext.getRequestParameterMap().get(
				RESOURCE_REQUEST_KEY);

		if (!(resourcePathObj instanceof String)) {
			return;
		}

		String resourcePath = (String) resourcePathObj;
		String resource = null;

		if (!getResourceMap().containsKey(resourcePath)) {
			loadResource(resourcePath);
		}

		resource = getResourceMap().get(resourcePath);

		if (resource == null) {
			return;
		}

		HttpServletResponse response = (HttpServletResponse) exContext
				.getResponse();
		PrintWriter out = null;

		response.setContentType("text/plain;charset=UTF-8");

		try {
			out = response.getWriter();
			out.print(resource);
		} catch (IOException e) {
			e.printStackTrace();
		} finally {

			if (out != null) {
				out.close();
			}

			context.responseComplete();
		}
	}

	public PhaseId getPhaseId() {
		return PhaseId.RESTORE_VIEW;
	}

	public void beforePhase(PhaseEvent event) {
	}

	private static Map<String, String> getResourceMap() {
		if (resourceMap == null) {
			resourceMap = new HashMap<String, String>();
		}
		
		return resourceMap;
	}
}