Mercurial > hg > release > thermostat-0.9
view client/cli/src/main/java/com/redhat/thermostat/client/cli/internal/ShellCommand.java @ 1100:c469675494d7
Enforce localization where appropriate via String wrapper
reviewed-by: omajid
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-May/006503.html
author | Jon VanAlten <jon.vanalten@redhat.com> |
---|---|
date | Thu, 02 May 2013 10:58:20 -0600 |
parents | f0f0027e0724 |
children | 97e66ed2e4ae |
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/* * Copyright 2012, 2013 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * Thermostat is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.client.cli.internal; import java.io.IOException; import java.util.Arrays; import java.util.logging.Level; import java.util.logging.Logger; import jline.Terminal; import jline.TerminalFactory; import jline.console.ConsoleReader; import jline.console.history.FileHistory; import jline.console.history.History; import jline.console.history.PersistentHistory; import org.osgi.framework.BundleContext; import org.osgi.framework.FrameworkUtil; import org.osgi.framework.ServiceReference; import com.redhat.thermostat.common.Launcher; import com.redhat.thermostat.common.Version; import com.redhat.thermostat.common.cli.AbstractCommand; import com.redhat.thermostat.common.cli.CommandContext; import com.redhat.thermostat.common.cli.CommandException; import com.redhat.thermostat.common.cli.Console; import com.redhat.thermostat.common.config.Configuration; import com.redhat.thermostat.common.config.InvalidConfigurationException; import com.redhat.thermostat.common.locale.Translate; import com.redhat.thermostat.common.utils.LoggingUtils; public class ShellCommand extends AbstractCommand { private static final Logger logger = LoggingUtils.getLogger(ShellCommand.class); private static final Translate<LocaleResources> t = LocaleResources.createLocalizer(); private static final String[] exitKeywords = { "exit", "quit", "q" }; private static final String PROMPT = "Thermostat > "; private HistoryProvider historyProvider; private Version version; private BundleContext bundleContext; static class HistoryProvider { public PersistentHistory get() { PersistentHistory history = null; try { history = new FileHistory(new Configuration().getHistoryFile()); } catch (InvalidConfigurationException | IOException e) { /* no history available */ } return history; } } public ShellCommand() { this(FrameworkUtil.getBundle(ShellCommand.class).getBundleContext(), new Version(), new HistoryProvider()); } ShellCommand(BundleContext context, Version version, HistoryProvider provider) { this.historyProvider = provider; this.bundleContext = context; this.version = version; } @Override public void run(CommandContext ctx) throws CommandException { Terminal term = TerminalFactory.create(); PersistentHistory history = historyProvider.get(); try { ctx.getConsole().getOutput().println(version.getVersionInfo()); shellMainLoop(ctx, history, term); } catch (IOException ex) { throw new CommandException(ex); } finally { closeTerminal(term); if (history != null) { try { history.flush(); } catch (IOException e) { logger.log(Level.WARNING, "Unable to save history", e); } } } } private void closeTerminal(Terminal term) throws CommandException { try { term.restore(); } catch (Exception e) { throw new CommandException(e); } } private void shellMainLoop(CommandContext ctx, History history, Terminal term) throws IOException, CommandException { ConsoleReader reader = new ConsoleReader(ctx.getConsole().getInput(), ctx.getConsole().getOutput(), term); if (history != null) { reader.setHistory(history); } while (handleConsoleInput(reader, ctx.getConsole())) { /* no-op; the loop conditional performs the action */ } } /** * @return true if the shell should continue accepting more input or false if the shell should quit */ private boolean handleConsoleInput(ConsoleReader reader, Console console) throws IOException, CommandException { String line; try { line = reader.readLine(PROMPT); } catch (IllegalArgumentException iae) { if (iae.getMessage().endsWith(": event not found")) { console.getError().println(iae.getMessage()); return true; } throw iae; } if (line == null) { return false; } line = line.trim(); if (line.equals("")) { return true; } else if (Arrays.asList(exitKeywords).contains(line)) { return false; } else { launchCommand(line); return true; } } private void launchCommand(String line) throws CommandException { String[] parsed = line.split(" "); ServiceReference launcherRef = bundleContext.getServiceReference(Launcher.class.getName()); if (launcherRef != null) { Launcher launcher = (Launcher) bundleContext.getService(launcherRef); launcher.run(parsed, true); } else { throw new CommandException(t.localize(LocaleResources.MISSING_LAUNCHER)); } } @Override public boolean isStorageRequired() { return false; } @Override public boolean isAvailableInShell() { return false; } }