Update on remote-server

[jvcard.git] / src / be / nikiroo / jvcard / tui / Main.java

package be.nikiroo.jvcard.tui;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.Socket;
import java.nio.charset.Charset;
import java.util.LinkedList;
import java.util.List;

import be.nikiroo.jvcard.Card;
import be.nikiroo.jvcard.i18n.Trans;
import be.nikiroo.jvcard.i18n.Trans.StringId;
import be.nikiroo.jvcard.remote.Command.Verb;
import be.nikiroo.jvcard.remote.SimpleSocket;
import be.nikiroo.jvcard.resources.Bundles;
import be.nikiroo.jvcard.tui.panes.FileList;

import com.googlecode.lanterna.gui2.Window;
import com.googlecode.lanterna.input.KeyStroke;

/**
 * This class contains the runnable Main method. It will parse the user supplied
 * parameters and take action based upon those. Most of the time, it will start
 * a MainWindow.
 * 
 * @author niki
 *
 */
public class Main {
	// TODO: move Main to be.nikiroo.jvcard, use introspection to load the other
	// main classes, allow the 3 programs to run from this new Main
	// also requires StringUtils/... in a new package
	private int TODO;

	public static final String APPLICATION_TITLE = "jVcard";
	public static final String APPLICATION_VERSION = "1.0-beta2-dev";

	static private Trans transService;

	/**
	 * Translate the given {@link StringId}.
	 * 
	 * @param id
	 *            the ID to translate
	 * 
	 * @return the translation
	 */
	static public String trans(StringId id) {
		if (transService == null)
			return "";

		return transService.trans(id);
	}

	/**
	 * Translate the given {@link KeyStroke}.
	 * 
	 * @param key
	 *            the key to translate
	 * 
	 * @return the translation
	 */
	static public String trans(KeyStroke key) {
		if (transService == null)
			return "";

		return transService.trans(key);
	}

	/**
	 * Start the application.
	 * 
	 * @param args
	 *            the parameters (see <tt>--help</tt> to know which are
	 *            supported)
	 */
	public static void main(String[] args) {
		Boolean textMode = null;
		boolean noMoreParams = false;
		boolean filesTried = false;

		// get the "system default" language to help translate the --help
		// message if needed
		String language = null;
		transService = new Trans(language);

		List<String> files = new LinkedList<String>();
		for (int index = 0; index < args.length; index++) {
			String arg = args[index];
			if (!noMoreParams && arg.equals("--")) {
				noMoreParams = true;
			} else if (!noMoreParams && arg.equals("--help")) {
				System.out
						.println("TODO: implement some help text.\n"
								+ "Usable switches:\n"
								+ "\t--: stop looking for switches\n"
								+ "\t--help: this here thingy\n"
								+ "\t--lang LANGUAGE: choose the language, for instance en_GB\n"
								+ "\t--tui: force pure text mode even if swing treminal is available\n"
								+ "\t--gui: force swing terminal mode\n"
								+ "\t--noutf: force non-utf8 mode if you need it\n"
								+ "\t--config DIRECTORY: force the given directory as a CONFIG_DIR\n"
								+ "everyhing else is either a file to open or a directory to open\n"
								+ "(we will only open 1st level files in given directories)\n"
								+ "('jvcard://hostname:8888/file' links -- or without 'file' -- are also ok)\n");
				return;
			} else if (!noMoreParams && arg.equals("--tui")) {
				textMode = true;
			} else if (!noMoreParams && arg.equals("--gui")) {
				textMode = false;
			} else if (!noMoreParams && arg.equals("--noutf")) {
				UiColors.getInstance().setUnicode(false);
			} else if (!noMoreParams && arg.equals("--lang")) {
				index++;
				if (index < args.length)
					language = args[index];
				transService = new Trans(language);
			} else if (!noMoreParams && arg.equals("--config")) {
				index++;
				if (index < args.length) {
					Bundles.setDirectory(args[index]);
					transService = new Trans(language);
				}
			} else {
				filesTried = true;
				files.addAll(open(arg));
			}
		}

		if (UiColors.getInstance().isUnicode()) {
			utf8();
		}

		if (files.size() == 0) {
			if (filesTried) {
				System.exit(1);
				return;
			}

			files.addAll(open("."));
		}

		// TODO error case when no file

		Window win = new MainWindow(new FileList(files));

		try {
			TuiLauncher.start(textMode, win);
		} catch (IOException ioe) {
			ioe.printStackTrace();
			System.exit(2);
		}
	}

	/**
	 * Open the given path and add all its files if it is a directory or just
	 * this one if not to the returned list.
	 * 
	 * @param path
	 *            the path to open
	 * 
	 * @return the list of opened files
	 */
	static private List<String> open(String path) {
		List<String> files = new LinkedList<String>();

		if (path != null && path.startsWith("jvcard://")) {
			if (path.endsWith("/")) {
				files.addAll(list(path));
			} else {
				files.add(path);
			}
		} else {
			File file = new File(path);
			if (file.exists()) {
				if (file.isDirectory()) {
					for (File subfile : file.listFiles()) {
						if (!subfile.isDirectory())
							files.add(subfile.getAbsolutePath());
					}
				} else {
					files.add(file.getAbsolutePath());
				}
			} else {
				System.err.println("File or directory not found: \"" + path
						+ "\"");
			}
		}

		return files;
	}

	/**
	 * List all the available {@link Card}s on the given network location (which
	 * is expected to be a jVCard remote server, obviously).
	 * 
	 * @param path
	 *            the jVCard remote server path (e.g.:
	 *            <tt>jvcard://localhost:4444/</tt>)
	 * 
	 * @return the list of {@link Card}s
	 */
	static private List<String> list(String path) {
		List<String> files = new LinkedList<String>();

		try {
			String host = path.split("\\:")[1].substring(2);
			int port = Integer.parseInt(path.split("\\:")[2].replaceAll("/$",
					""));
			SimpleSocket s = new SimpleSocket(new Socket(host, port),
					"sync client");
			s.open(true);

			s.sendCommand(Verb.LIST);
			for (String p : s.receiveBlock()) {
				files.add(path
						+ p.substring(StringUtils.fromTime(0).length() + 1));
			}
			s.close();
		} catch (Exception e) {
			e.printStackTrace();
		}

		return files;
	}

	/**
	 * Really, really ask for UTF-8 encoding.
	 */
	static private void utf8() {
		try {
			System.setProperty("file.encoding", "UTF-8");
			Field charset = Charset.class.getDeclaredField("defaultCharset");
			charset.setAccessible(true);
			charset.set(null, null);
		} catch (SecurityException e) {
		} catch (NoSuchFieldException e) {
		} catch (IllegalArgumentException e) {
		} catch (IllegalAccessException e) {
		}
	}
}