|
Scala example source code file (TerminalFactory.java)
The TerminalFactory.java Scala example source code/* * Copyright (c) 2002-2007, Marc Prud'hommeaux. All rights reserved. * * This software is distributable under the BSD license. See the terms of the * BSD license in the documentation provided with this software. */ package scala.tools.jline; import scala.tools.jline.internal.Configuration; import scala.tools.jline.internal.Log; import java.text.MessageFormat; import java.util.HashMap; import java.util.Map; /** * Creates terminal instances. * * @author <a href="mailto:jason@planet57.com">Jason Dillon</a> * @since 2.0 */ public class TerminalFactory { public static final String JLINE_TERMINAL = "jline.terminal"; public static final String AUTO = "auto"; public static final String UNIX = "unix"; public static final String WIN = "win"; public static final String WINDOWS = "windows"; public static final String NONE = "none"; public static final String OFF = "off"; public static final String FALSE = "false"; private static final InheritableThreadLocal<Terminal> holder = new InheritableThreadLocal<Terminal>(); public static synchronized Terminal create() { if (Log.TRACE) { //noinspection ThrowableInstanceNeverThrown Log.trace(new Throwable("CREATE MARKER")); } String type = Configuration.getString(JLINE_TERMINAL); if (type == null) { type = AUTO; } Log.debug("Creating terminal; type=", type); Terminal t; try { String tmp = type.toLowerCase(); if (tmp.equals(UNIX)) { t = getFlavor(Flavor.UNIX); } else if (tmp.equals(WIN) | tmp.equals(WINDOWS)) { t = getFlavor(Flavor.WINDOWS); } else if (tmp.equals(NONE) || tmp.equals(OFF) || tmp.equals(FALSE)) { t = new UnsupportedTerminal(); } else { if (tmp.equals(AUTO)) { String os = Configuration.getOsName(); Flavor flavor = Flavor.UNIX; if (os.contains(WINDOWS)) { flavor = Flavor.WINDOWS; } t = getFlavor(flavor); } else { try { t = (Terminal) Thread.currentThread().getContextClassLoader().loadClass(type).newInstance(); } catch (Exception e) { throw new IllegalArgumentException(MessageFormat.format("Invalid terminal type: {0}", type), e); } } } } catch (Exception e) { Log.error("Failed to construct terminal; falling back to unsupported", e); t = new UnsupportedTerminal(); } Log.debug("Created Terminal: ", t); try { t.init(); } catch (Exception e) { Log.error("Terminal initialization failed; falling back to unsupported", e); return new UnsupportedTerminal(); } return t; } public static synchronized void reset() { holder.remove(); } public static synchronized void resetIf(final Terminal t) { if (holder.get() == t) { reset(); } } public static enum Type { AUTO, WINDOWS, UNIX, NONE } public static synchronized void configure(final String type) { assert type != null; System.setProperty(JLINE_TERMINAL, type); } public static synchronized void configure(final Type type) { assert type != null; configure(type.name().toLowerCase()); } // // Flavor Support // public static enum Flavor { WINDOWS, UNIX } private static final Map<Flavor, Class<? extends Terminal>> FLAVORS = new HashMap<Flavor, Class<? extends Terminal>>(); static { registerFlavor(Flavor.WINDOWS, AnsiWindowsTerminal.class); registerFlavor(Flavor.UNIX, UnixTerminal.class); } public static synchronized Terminal get() { Terminal t = holder.get(); if (t == null) { t = create(); holder.set(t); } return t; } public static Terminal getFlavor(final Flavor flavor) throws Exception { Class<? extends Terminal> type = FLAVORS.get(flavor); if (type != null) { return type.newInstance(); } throw new InternalError(); } public static void registerFlavor(final Flavor flavor, final Class<? extends Terminal> type) { FLAVORS.put(flavor, type); } } Other Scala source code examplesHere is a short list of links related to this Scala TerminalFactory.java source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.