/*
 * jEdit.java - Main class of the jEdit editor
 * :tabSize=8:indentSize=8:noTabs=false:
 * :folding=explicit:collapseFolds=1:
 *
 * Copyright (C) 1998, 2004 Slava Pestov
 *
 * This program 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
 * of the License, or any later version.
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package org.gjt.sp.jedit;

//{{{ Imports
import bsh.UtilEvalError;
import com.microstar.xml.*;
import javax.swing.plaf.metal.*;
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.net.*;
import java.text.MessageFormat;
import java.util.*;
import org.gjt.sp.jedit.buffer.BufferIORequest;
import org.gjt.sp.jedit.buffer.KillRing;
import org.gjt.sp.jedit.msg.*;
import org.gjt.sp.jedit.gui.*;
import org.gjt.sp.jedit.help.HelpViewer;
import org.gjt.sp.jedit.io.*;
import org.gjt.sp.jedit.pluginmgr.PluginManager;
import org.gjt.sp.jedit.search.SearchAndReplace;
import org.gjt.sp.jedit.syntax.*;
import org.gjt.sp.jedit.textarea.*;
import org.gjt.sp.util.Log;
//}}}

/**
 * The main class of the jEdit text editor.
 * @author Slava Pestov
 * @version $Id: jEdit.java,v 1.238 2004/08/29 02:58:43 spestov Exp $
 */
public class jEdit
{
	//{{{ getVersion() method
	/**
	 * Returns the jEdit version as a human-readable string.
	 */
	public static String getVersion()
	{
		return MiscUtilities.buildToVersion(getBuild());
	} //}}}

	//{{{ getBuild() method
	/**
	 * Returns the internal version. MiscUtilities.compareStrings() can be used
	 * to compare different internal versions.
	 */
	public static String getBuild()
	{
		// (major).(minor).(<99 = preX, 99 = final).(bug fix)
		return "04.02.99.00";
	} //}}}

	//{{{ main() method
	/**
	 * The main method of the jEdit application.
	 * This should never be invoked directly.
	 * @param args The command line arguments
	 */
	public static void main(String[] args)
	{
		//{{{ Check for Java 1.3 or later
		String javaVersion = System.getProperty("java.version");
		if(javaVersion.compareTo("1.3") < 0)
		{
			System.err.println("You are running Java version "
				+ javaVersion + ".");
			System.err.println("jEdit requires Java 1.3 or later.");
			System.exit(1);
		} //}}}

		// later on we need to know if certain code is called from
		// the main thread
		mainThread = Thread.currentThread();

		settingsDirectory = ".jedit";

		// MacOS users expect the app to keep running after all windows
		// are closed
		background = OperatingSystem.isMacOS();

		//{{{ Parse command line
		boolean endOpts = false;
		int level = Log.WARNING;
		String portFile = "server";
		boolean restore = true;
		boolean newView = true;
		boolean newPlainView = false;
		boolean gui = true; // open initial view?
		boolean loadPlugins = true;
		boolean runStartupScripts = true;
		boolean quit = false;
		boolean wait = false;
		String userDir = System.getProperty("user.dir");

		// script to run
		String scriptFile = null;

		for(int i = 0; i < args.length; i++)
		{
			String arg = args[i];
			if(arg == null)
				continue;
			else if(arg.length() == 0)
				args[i] = null;
			else if(arg.startsWith("-") && !endOpts)
			{
				if(arg.equals("--"))
					endOpts = true;
				else if(arg.equals("-usage"))
				{
					version();
					System.err.println();
					usage();
					System.exit(1);
				}
				else if(arg.equals("-version"))
				{
					version();
					System.exit(1);
				}
				else if(arg.startsWith("-log="))
				{
					try
					{
						level = Integer.parseInt(arg.substring("-log=".length()));
					}
					catch(NumberFormatException nf)
					{
						System.err.println("Malformed option: " + arg);
					}
				}
				else if(arg.equals("-nosettings"))
					settingsDirectory = null;
				else if(arg.startsWith("-settings="))
					settingsDirectory = arg.substring(10);
				else if(arg.startsWith("-noserver"))
					portFile = null;
				else if(arg.equals("-server"))
					portFile = "server";
				else if(arg.startsWith("-server="))
					portFile = arg.substring(8);
				else if(arg.startsWith("-background"))
					background = true;
				else if(arg.startsWith("-nobackground"))
					background = false;
				else if(arg.equals("-gui"))
					gui = true;
				else if(arg.equals("-nogui"))
					gui = false;
				else if(arg.equals("-newview"))
					newView = true;
				else if(arg.equals("-newplainview"))
					newPlainView = true;
				else if(arg.equals("-reuseview"))
					newPlainView = newView = false;
				else if(arg.equals("-restore"))
					restore = true;
				else if(arg.equals("-norestore"))
					restore = false;
				else if(arg.equals("-plugins"))
					loadPlugins = true;
				else if(arg.equals("-noplugins"))
					loadPlugins = false;
				else if(arg.equals("-startupscripts"))
					runStartupScripts = true;
				else if(arg.equals("-nostartupscripts"))
					runStartupScripts = false;
				else if(arg.startsWith("-run="))
					scriptFile = arg.substring(5);
				else if(arg.equals("-wait"))
					wait = true;
				else if(arg.equals("-quit"))
					quit = true;
				else
				{
					System.err.println("Unknown option: "
						+ arg);
					usage();
					System.exit(1);
				}
				args[i] = null;
			}
		} //}}}

		//{{{ We need these initializations very early on
		if(settingsDirectory != null)
		{
			settingsDirectory = MiscUtilities.constructPath(
				System.getProperty("user.home"),
				settingsDirectory);
			settingsDirectory = MiscUtilities.resolveSymlinks(
				settingsDirectory);
		}

		if(settingsDirectory != null && portFile != null)
			portFile = MiscUtilities.constructPath(settingsDirectory,portFile);
		else
			portFile = null;

		Log.init(true,level);
		//}}}

		//{{{ Try connecting to another running jEdit instance
		if(portFile != null && new File(portFile).exists())
		{
			int port, key;
			try
			{
				BufferedReader in = new BufferedReader(new FileReader(portFile));
				String check = in.readLine();
				if(!check.equals("b"))
					throw new Exception("Wrong port file format");

				port = Integer.parseInt(in.readLine());
				key = Integer.parseInt(in.readLine());

				Socket socket = new Socket(InetAddress.getByName("127.0.0.1"),port);
				DataOutputStream out = new DataOutputStream(
					socket.getOutputStream());
				out.writeInt(key);

				String script;
				if(quit)
				{
					script = "socket.close();\n"
						+ "jEdit.exit(null,true);\n";
				}
				else
				{
					script = makeServerScript(wait,restore,
						newView,newPlainView,args,
						scriptFile);
				}

				out.writeUTF(script);

				Log.log(Log.DEBUG,jEdit.class,"Waiting for server");
				// block until its closed
				try
				{
					socket.getInputStream().read();
				}
				catch(Exception e)
				{
				}

				in.close();
				out.close();

				System.exit(0);
			}
			catch(Exception e)
			{
				// ok, this one seems to confuse newbies
				// endlessly, so log it as NOTICE, not
				// ERROR
				Log.log(Log.NOTICE,jEdit.class,"An error occurred"
					+ " while connecting to the jEdit server instance.");
				Log.log(Log.NOTICE,jEdit.class,"This probably means that"
					+ " jEdit crashed and/or exited abnormally");
				Log.log(Log.NOTICE,jEdit.class,"the last time it was run.");
				Log.log(Log.NOTICE,jEdit.class,"If you don't"
					+ " know what this means, don't worry.");
				Log.log(Log.NOTICE,jEdit.class,e);
			}
		}

		if(quit)
		{
			// if no server running and user runs jedit -quit,
			// just exit
			System.exit(0);
		} //}}}

		// don't show splash screen if there is a file named
		// 'nosplash' in the settings directory
		if(!new File(settingsDirectory,"nosplash").exists())
			GUIUtilities.showSplashScreen();

		//{{{ Initialize settings directory
		Writer stream;
		if(settingsDirectory != null)
		{
			File _settingsDirectory = new File(settingsDirectory);
			if(!_settingsDirectory.exists())
				_settingsDirectory.mkdirs();
			File _macrosDirectory = new File(settingsDirectory,"macros");
			if(!_macrosDirectory.exists())
				_macrosDirectory.mkdir();

			String logPath = MiscUtilities.constructPath(
				settingsDirectory,"activity.log");

			backupSettingsFile(new File(logPath));

			try
			{
				stream = new BufferedWriter(new FileWriter(logPath));

				// Write a warning message:
				String lineSep = System.getProperty("line.separator");
				stream.write("Log file created on " + new Date());
				stream.write(lineSep);
				stream.write("IMPORTANT:");
				stream.write(lineSep);
				stream.write("Because updating this file after "
					+ "every log message would kill");
				stream.write(lineSep);
				stream.write("performance, it will be *incomplete* "
					+ "unless you invoke the");
				stream.write(lineSep);
				stream.write("Utilities->Troubleshooting->Update "
					+ "Activity Log on Disk command!");
				stream.write(lineSep);
			}
			catch(Exception e)
			{
				e.printStackTrace();
				stream = null;
			}
		}
		else
		{
			stream = null;
		} //}}}

		Log.setLogWriter(stream);

		Log.log(Log.NOTICE,jEdit.class,"jEdit version " + getVersion());
		Log.log(Log.MESSAGE,jEdit.class,"Settings directory is "
			+ settingsDirectory);

		//{{{ Get things rolling
		initMisc();
		initSystemProperties();

		GUIUtilities.advanceSplashProgress();

		GUIUtilities.init();
		BeanShell.init();

		if(jEditHome != null)
			initSiteProperties();

		initUserProperties();
		//}}}

		//{{{ Initialize server
		if(portFile != null)
		{
			server = new EditServer(portFile);
			if(!server.isOK())
				server = null;
		}
		else
		{
			if(background)
			{
				background = false;
				Log.log(Log.WARNING,jEdit.class,"You cannot specify both the"
					+ " -background and -noserver switches");
			}
		} //}}}

		//{{{ Do more stuff
		initPLAF();

		VFSManager.init();
		initResources();
		SearchAndReplace.load();

		GUIUtilities.advanceSplashProgress();

		if(loadPlugins)
			initPlugins();

		HistoryModel.loadHistory();
		BufferHistory.load();
		KillRing.load();
		propertiesChanged();

		GUIUtilities.advanceSplashProgress();

		// Buffer sort
		sortBuffers = getBooleanProperty("sortBuffers");
		sortByName = getBooleanProperty("sortByName");

		reloadModes();

		GUIUtilities.advanceSplashProgress();
		//}}}

		//{{{ Initialize Java 1.4-specific code
		if(OperatingSystem.hasJava14())
		{
			try
			{
				ClassLoader loader = jEdit.class.getClassLoader();
				Class clazz;
				if(loader != null)
					clazz = loader.loadClass("org.gjt.sp.jedit.Java14");
				else
					clazz = Class.forName("org.gjt.sp.jedit.Java14");
				java.lang.reflect.Method meth = clazz
					.getMethod("init",new Class[0]);
				meth.invoke(null,new Object[0]);
			}
			catch(Exception e)
			{
				Log.log(Log.ERROR,jEdit.class,e);
				System.exit(1);
			}
		} //}}}

		//{{{ Activate plugins that must be activated at startup
		for(int i = 0; i < jars.size(); i++)
		{
			((PluginJAR)jars.elementAt(i)).activatePluginIfNecessary();
		} //}}}

		//{{{ Load macros and run startup scripts, after plugins and settings are loaded
		Macros.loadMacros();
		Macros.getMacroActionSet().initKeyBindings();

		if(runStartupScripts && jEditHome != null)
		{
			String path = MiscUtilities.constructPath(jEditHome,"startup");
			File file = new File(path);
			if(file.exists())
				runStartupScripts(file);
		}

		if(runStartupScripts && settingsDirectory != null)
		{
			String path = MiscUtilities.constructPath(settingsDirectory,"startup");
			File file = new File(path);
			if(!file.exists())
				file.mkdirs();
			else
				runStartupScripts(file);
		} //}}}

		//{{{ Run script specified with -run= parameter
		if(scriptFile != null)
		{
			scriptFile = MiscUtilities.constructPath(userDir,scriptFile);
			try
			{
				BeanShell.getNameSpace().setVariable("args",args);
			}
			catch(UtilEvalError e)
			{
				Log.log(Log.ERROR,jEdit.class,e);
			}
			BeanShell.runScript(null,scriptFile,null,false);
		} //}}}

		GUIUtilities.advanceSplashProgress();

		// Open files, create the view and hide the splash screen.
		finishStartup(gui,restore,userDir,args);
	} //}}}

	//{{{ Property methods

	//{{{ getProperties() method
	/**
	 * Returns the properties object which contains all known
	 * jEdit properties. Note that as of jEdit 4.2pre10, this returns a
	 * new collection, not the existing properties instance.
	 * @since jEdit 3.1pre4
	 */
	public static final Properties getProperties()
	{
		return propMgr.getProperties();
	} //}}}

	//{{{ getProperty() method
	/**
	 * Fetches a property, returning null if it's not defined.
	 * @param name The property
	 */
	public static final String getProperty(String name)
	{
		return propMgr.getProperty(name);
	} //}}}

	//{{{ getProperty() method
	/**
	 * Fetches a property, returning the default value if it's not
	 * defined.
	 * @param name The property
	 * @param def The default value
	 */
	public static final String getProperty(String name, String def)
	{
		String value = propMgr.getProperty(name);
		if(value == null)
			return def;
		else
			return value;
	} //}}}

	//{{{ getProperty() method
	/**
	 * Returns the property with the specified name.

	 *
	 * The elements of the args array are substituted
	 * into the value of the property in place of strings of the
	 * form {n}, where n is an index
	 * in the array.

	 *
	 * You can find out more about this feature by reading the
	 * documentation for the format method of the
	 * java.text.MessageFormat class.
	 *
	 * @param name The property
	 * @param args The positional parameters
	 */
	public static final String getProperty(String name, Object[] args)
	{
		if(name == null)
			return null;
		if(args == null)
			return getProperty(name);
		else
		{
			String value = getProperty(name);
			if(value == null)
				return null;
			else
				return MessageFormat.format(value,args);
		}
	} //}}}

	//{{{ getBooleanProperty() method
	/**
	 * Returns the value of a boolean property.
	 * @param name The property
	 */
	public static final boolean getBooleanProperty(String name)
	{
		return getBooleanProperty(name,false);
	} //}}}

	//{{{ getBooleanProperty() method
	/**
	 * Returns the value of a boolean property.
	 * @param name The property
	 * @param def The default value
	 */
	public static final boolean getBooleanProperty(String name, boolean def)
	{
		String value = getProperty(name);
		if(value == null)
			return def;
		else if(value.equals("true") || value.equals("yes")
			|| value.equals("on"))
			return true;
		else if(value.equals("false") || value.equals("no")
			|| value.equals("off"))
			return false;
		else
			return def;
	} //}}}

	//{{{ getIntegerProperty() method
	/**
	 * Returns the value of an integer property.
	 * @param name The property
	 * @param def The default value
	 * @since jEdit 4.0pre1
	 */
	public static final int getIntegerProperty(String name, int def)
	{
		String value = getProperty(name);
		if(value == null)
			return def;
		else
		{
			try
			{
				return Integer.parseInt(value.trim());
			}
			catch(NumberFormatException nf)
			{
				return def;
			}
		}
	} //}}}

	//{{{ getDoubleProperty() method
	public static double getDoubleProperty(String name, double def)
	{
		String value = getProperty(name);
		if(value == null)
			return def;
		else
		{
			try
			{
				return Double.parseDouble(value.trim());
			}
			catch(NumberFormatException nf)
			{
				return def;
			}
		}
	}
	//}}}

	//{{{ getFontProperty() method
	/**
	 * Returns the value of a font property. The family is stored
	 * in the name property, the font size is stored
	 * in the namesize property, and the font style is
	 * stored in namestyle. For example, if
	 * name is view.gutter.font, the
	 * properties will be named view.gutter.font,
	 * view.gutter.fontsize, and
	 * view.gutter.fontstyle.
	 *
	 * @param name The property
	 * @since jEdit 4.0pre1
	 */
	public static final Font getFontProperty(String name)
	{
		return getFontProperty(name,null);
	} //}}}

	//{{{ getFontProperty() method
	/**
	 * Returns the value of a font property. The family is stored
	 * in the name property, the font size is stored
	 * in the namesize property, and the font style is
	 * stored in namestyle. For example, if
	 * name is view.gutter.font, the
	 * properties will be named view.gutter.font,
	 * view.gutter.fontsize, and
	 * view.gutter.fontstyle.
	 *
	 * @param name The property
	 * @param def The default value
	 * @since jEdit 4.0pre1
	 */
	public static final Font getFontProperty(String name, Font def)
	{
		String family = getProperty(name);
		String sizeString = getProperty(name + "size");
		String styleString = getProperty(name + "style");

		if(family == null || sizeString == null || styleString == null)
			return def;
		else
		{
			int size, style;

			try
			{
				size = Integer.parseInt(sizeString);
			}
			catch(NumberFormatException nf)
			{
				return def;
			}

			try
			{
				style = Integer.parseInt(styleString);
			}
			catch(NumberFormatException nf)
			{
				return def;
			}

			return new Font(family,style,size);
		}
	} //}}}

	//{{{ getColorProperty() method
	/**
	 * Returns the value of a color property.
	 * @param name The property name
	 * @since jEdit 4.0pre1
	 */
	public static Color getColorProperty(String name)
	{
		return getColorProperty(name,Color.black);
	} //}}}

	//{{{ getColorProperty() method
	/**
	 * Returns the value of a color property.
	 * @param name The property name
	 * @param def The default value
	 * @since jEdit 4.0pre1
	 */
	public static Color getColorProperty(String name, Color def)
	{
		String value = getProperty(name);
		if(value == null)
			return def;
		else
			return GUIUtilities.parseColor(value,def);
	} //}}}

	//{{{ setColorProperty() method
	/**
	 * Sets the value of a color property.
	 * @param name The property name
	 * @param value The value
	 * @since jEdit 4.0pre1
	 */
	public static void setColorProperty(String name, Color value)
	{
		setProperty(name,GUIUtilities.getColorHexString(value));
	} //}}}

	//{{{ setProperty() method
	/**
	 * Sets a property to a new value.
	 * @param name The property
	 * @param value The new value
	 */
	public static final void setProperty(String name, String value)
	{
		propMgr.setProperty(name,value);
	} //}}}

	//{{{ setTemporaryProperty() method
	/**
	 * Sets a property to a new value. Properties set using this
	 * method are not saved to the user properties list.
	 * @param name The property
	 * @param value The new value
	 * @since jEdit 2.3final
	 */
	public static final void setTemporaryProperty(String name, String value)
	{
		propMgr.setTemporaryProperty(name,value);
	} //}}}

	//{{{ setBooleanProperty() method
	/**
	 * Sets a boolean property.
	 * @param name The property
	 * @param value The value
	 */
	public static final void setBooleanProperty(String name, boolean value)
	{
		setProperty(name,value ? "true" : "false");
	} //}}}

	//{{{ setIntegerProperty() method
	/**
	 * Sets the value of an integer property.
	 * @param name The property
	 * @param value The value
	 * @since jEdit 4.0pre1
	 */
	public static final void setIntegerProperty(String name, int value)
	{
		setProperty(name,String.valueOf(value));
	} //}}}

	//{{{ setDoubleProperty() method
	public static final void setDoubleProperty(String name, double value)
	{
		setProperty(name,String.valueOf(value));
	}
	//}}}

	//{{{ setFontProperty() method
	/**
	 * Sets the value of a font property. The family is stored
	 * in the name property, the font size is stored
	 * in the namesize property, and the font style is
	 * stored in namestyle. For example, if
	 * name is view.gutter.font, the
	 * properties will be named view.gutter.font,
	 * view.gutter.fontsize, and
	 * view.gutter.fontstyle.
	 *
	 * @param name The property
	 * @param value The value
	 * @since jEdit 4.0pre1
	 */
	public static final void setFontProperty(String name, Font value)
	{
		setProperty(name,value.getFamily());
		setIntegerProperty(name + "size",value.getSize());
		setIntegerProperty(name + "style",value.getStyle());
	} //}}}

	//{{{ unsetProperty() method
	/**
	 * Unsets (clears) a property.
	 * @param name The property
	 */
	public static final void unsetProperty(String name)
	{
		propMgr.unsetProperty(name);
	} //}}}

	//{{{ resetProperty() method
	/**
	 * Resets a property to its default value.
	 * @param name The property
	 *
	 * @since jEdit 2.5pre3
	 */
	public static final void resetProperty(String name)
	{
		propMgr.resetProperty(name);
	} //}}}

	//{{{ propertiesChanged() method
	/**
	 * Reloads various settings from the properties.
	 */
	public static void propertiesChanged()
	{
		initKeyBindings();

		Autosave.setInterval(getIntegerProperty("autosave",30));

		saveCaret = getBooleanProperty("saveCaret");

		UIDefaults defaults = UIManager.getDefaults();

		// give all text areas the same font
		Font font = getFontProperty("view.font");

		//defaults.put("TextField.font",font);
		defaults.put("TextArea.font",font);
		defaults.put("TextPane.font",font);

		// Enable/Disable tooltips
		ToolTipManager.sharedInstance().setEnabled(
			jEdit.getBooleanProperty("showTooltips"));

		initProxy();

		// we do this here instead of adding buffers to the bus.
		Buffer buffer = buffersFirst;
		while(buffer != null)
		{
			buffer.resetCachedProperties();
			buffer.propertiesChanged();
			buffer = buffer.next;
		}

		HistoryModel.propertiesChanged();
		KillRing.propertiesChanged();

		EditBus.send(new PropertiesChanged(null));
	} //}}}

	//}}}

	//{{{ Plugin management methods

	//{{{ getNotLoadedPluginJARs() method
	/**
	 * Returns a list of plugin JARs that are not currently loaded
	 * by examining the user and system plugin directories.
	 * @since jEdit 3.2pre1
	 */
	public static String[] getNotLoadedPluginJARs()
	{
		Vector returnValue = new Vector();

		if(jEditHome != null)
		{
			String systemPluginDir = MiscUtilities
				.constructPath(jEditHome,"jars");

			String[] list = new File(systemPluginDir).list();
			if(list != null)
				getNotLoadedPluginJARs(returnValue,systemPluginDir,list);
		}

		if(settingsDirectory != null)
		{
			String userPluginDir = MiscUtilities
				.constructPath(settingsDirectory,"jars");
			String[] list = new File(userPluginDir).list();
			if(list != null)
			{
				getNotLoadedPluginJARs(returnValue,
					userPluginDir,list);
			}
		}

		String[] _returnValue = new String[returnValue.size()];
		returnValue.copyInto(_returnValue);
		return _returnValue;
	} //}}}

	//{{{ getPlugin() method
	/**
	 * Returns the plugin with the specified class name.
	 */
	public static EditPlugin getPlugin(String name)
	{
		return getPlugin(name, false);
	} //}}}

	//{{{ getPlugin(String, boolean) method
	/**
	 * Returns the plugin with the specified class name. If
	 * loadIfNecessary is true, the plugin will be activated in
	 * case it has not yet been started.
	 * @since jEdit 4.2pre4
	 */
	public static EditPlugin getPlugin(String name, boolean loadIfNecessary)
	{
		EditPlugin[] plugins = getPlugins();
		EditPlugin plugin = null;
		for(int i = 0; i < plugins.length; i++)
		{
			if(plugins[i].getClassName().equals(name))
				plugin = plugins[i];
			if(loadIfNecessary)
			{
				if(plugin instanceof EditPlugin.Deferred)
				{
					plugin.getPluginJAR().activatePlugin();
					plugin = plugin.getPluginJAR().getPlugin();
					break;
				}
			}
		}

		return plugin;
	} //}}}

	//{{{ getPlugins() method
	/**
	 * Returns an array of installed plugins.
	 */
	public static EditPlugin[] getPlugins()
	{
		Vector vector = new Vector();
		for(int i = 0; i < jars.size(); i++)
		{
			EditPlugin plugin = ((PluginJAR)jars.elementAt(i))
				.getPlugin();
			if(plugin != null)
				vector.add(plugin);
		}

		EditPlugin[] array = new EditPlugin[vector.size()];
		vector.copyInto(array);
		return array;
	} //}}}

	//{{{ getPluginJARs() method
	/**
	 * Returns an array of installed plugins.
	 * @since jEdit 4.2pre1
	 */
	public static PluginJAR[] getPluginJARs()
	{
		PluginJAR[] array = new PluginJAR[jars.size()];
		jars.copyInto(array);
		return array;
	} //}}}

	//{{{ getPluginJAR() method
	/**
	 * Returns the JAR with the specified path name.
	 * @param path The path name
	 * @since jEdit 4.2pre1
	 */
	public static PluginJAR getPluginJAR(String path)
	{
		for(int i = 0; i < jars.size(); i++)
		{
			PluginJAR jar = (PluginJAR)jars.elementAt(i);
			if(jar.getPath().equals(path))
				return jar;
		}

		return null;
	} //}}}

	//{{{ addPluginJAR() method
	/**
	 * Loads the plugin JAR with the specified path. Some notes about this
	 * method:
	 *
	 * 

	 * 
Calling this at a time other than jEdit startup can have
	 * unpredictable results if the plugin has not been updated for the
	 * jEdit 4.2 plugin API.
	 * 
You must make sure yourself the plugin is not already loaded.
	 * 
After loading, you just make sure all the plugin's dependencies
	 * are satisified before activating the plugin, using the
	 * {@link PluginJAR#checkDependencies()} method.
	 * 
	 *
	 * @param path The JAR file path
	 * @since jEdit 4.2pre1
	 */
	public static void addPluginJAR(String path)
	{
		// backwards compatibility...
		PluginJAR jar = new EditPlugin.JAR(new File(path));
		jars.addElement(jar);
		jar.init();

		EditBus.send(new PluginUpdate(jar,PluginUpdate.LOADED,false));
		if(!isMainThread())
		{
			EditBus.send(new DynamicMenuChanged("plugins"));
			initKeyBindings();
		}
	} //}}}

	//{{{ addPluginJARsFromDirectory() method
	/**
	 * Loads all plugins in a directory.
	 * @param directory The directory
	 * @since jEdit 4.2pre1
	 */
	private static void addPluginJARsFromDirectory(String directory)
	{
		Log.log(Log.NOTICE,jEdit.class,"Loading plugins from "
			+ directory);

		File file = new File(directory);
		if(!(file.exists() && file.isDirectory()))
			return;
		String[] plugins = file.list();
		if(plugins == null)
			return;

		for(int i = 0; i < plugins.length; i++)
		{
			String plugin = plugins[i];
			if(!plugin.toLowerCase().endsWith(".jar"))
				continue;

			String path = MiscUtilities.constructPath(directory,plugin);

			// remove this when 4.1 plugin API is deprecated
			if(plugin.equals("EditBuddy.jar")
				|| plugin.equals("PluginManager.jar")
				|| plugin.equals("Firewall.jar")
				|| plugin.equals("Tidy.jar")
				|| plugin.equals("DragAndDrop.jar"))
			{
				pluginError(path,"plugin-error.obsolete",null);
				continue;
			}

			addPluginJAR(path);
		}
	} //}}}

	//{{{ removePluginJAR() method
	/**
	 * Unloads the given plugin JAR with the specified path. Note that
	 * calling this at a time other than jEdit shutdown can have
	 * unpredictable results if the plugin has not been updated for the
	 * jEdit 4.2 plugin API.
	 *
	 * @param jar The PluginJAR instance
	 * @param exit Set to true if jEdit is exiting; enables some
	 * shortcuts so the editor can close faster.
	 * @since jEdit 4.2pre1
	 */
	public static void removePluginJAR(PluginJAR jar, boolean exit)
	{
		if(exit)
		{
			jar.uninit(true);
		}
		else
		{
			jar.uninit(false);
			jars.removeElement(jar);
			initKeyBindings();
		}

		EditBus.send(new PluginUpdate(jar,PluginUpdate.UNLOADED,exit));
		if(!isMainThread() && !exit)
			EditBus.send(new DynamicMenuChanged("plugins"));
	} //}}}

	//}}}

	//{{{ Action methods

	//{{{ getActionContext() method
	/**
	 * Returns the action context used to store editor actions.
	 * @since jEdit 4.2pre1
	 */
	public static ActionContext getActionContext()
	{
		return actionContext;
	} //}}}

	//{{{ addActionSet() method
	/**
	 * Adds a new action set to jEdit's list. Plugins probably won't
	 * need to call this method.
	 * @since jEdit 4.0pre1
	 */
	public static void addActionSet(ActionSet actionSet)
	{
		actionContext.addActionSet(actionSet);
	} //}}}

	//{{{ removeActionSet() method
	/**
	 * Removes an action set from jEdit's list. Plugins probably won't
	 * need to call this method.
	 * @since jEdit 4.2pre1
	 */
	public static void removeActionSet(ActionSet actionSet)
	{
		actionContext.removeActionSet(actionSet);
	} //}}}

	//{{{ getBuiltInActionSet() method
	/**
	 * Returns the set of commands built into jEdit.
	 * @since jEdit 4.2pre1
	 */
	public static ActionSet getBuiltInActionSet()
	{
		return builtInActionSet;
	} //}}}

	//{{{ getActionSets() method
	/**
	 * Returns all registered action sets.
	 * @since jEdit 4.0pre1
	 */
	public static ActionSet[] getActionSets()
	{
		return actionContext.getActionSets();
	} //}}}

	//{{{ getAction() method
	/**
	 * Returns the specified action.
	 * @param name The action name
	 */
	public static EditAction getAction(String name)
	{
		return actionContext.getAction(name);
	} //}}}

	//{{{ getActionSetForAction() method
	/**
	 * Returns the action set that contains the specified action.
	 *
	 * @param action The action
	 * @since jEdit 4.2pre1
	 */
	public static ActionSet getActionSetForAction(String action)
	{
		return actionContext.getActionSetForAction(action);
	} //}}}

	//{{{ getActionSetForAction() method
	/**
	 * @deprecated Use the form that takes a String instead
	 */
	public static ActionSet getActionSetForAction(EditAction action)
	{
		return actionContext.getActionSetForAction(action.getName());
	} //}}}

	//{{{ getActions() method
	/**
	 * @deprecated Call getActionNames() instead
	 */
	public static EditAction[] getActions()
	{
		String[] names = actionContext.getActionNames();
		EditAction[] actions = new EditAction[names.length];
		for(int i = 0; i < actions.length; i++)
		{
			actions[i] = actionContext.getAction(names[i]);
			if(actions[i] == null)
				Log.log(Log.ERROR,jEdit.class,"wtf: " + names[i]);
		}
		return actions;
	} //}}}

	//{{{ getActionNames() method
	/**
	 * Returns all registered action names.
	 */
	public static String[] getActionNames()
	{
		return actionContext.getActionNames();
	} //}}}

	//}}}

	//{{{ Edit mode methods

	//{{{ reloadModes() method
	/**
	 * Reloads all edit modes.
	 * @since jEdit 3.2pre2
	 */
	public static void reloadModes()
	{
		/* Try to guess the eventual size to avoid unnecessary
		 * copying */
		modes = new Vector(50);

		//{{{ Load the global catalog
		if(jEditHome == null)
			loadModeCatalog("/modes/catalog",true);
		else
		{
			loadModeCatalog(MiscUtilities.constructPath(jEditHome,
				"modes","catalog"),false);
		} //}}}

		//{{{ Load user catalog
		if(settingsDirectory != null)
		{
			File userModeDir = new File(MiscUtilities.constructPath(
				settingsDirectory,"modes"));
			if(!userModeDir.exists())
				userModeDir.mkdirs();

			File userCatalog = new File(MiscUtilities.constructPath(
				settingsDirectory,"modes","catalog"));
			if(!userCatalog.exists())
			{
				// create dummy catalog
				FileWriter out = null;
				try
				{
					out = new FileWriter(userCatalog);
					out.write(jEdit.getProperty("defaultCatalog"));
					out.close();
				}
				catch(IOException io)
				{
					Log.log(Log.ERROR,jEdit.class,io);
				}
				finally
				{
					try
					{
						if(out != null)
							out.close();
					}
					catch(IOException e)
					{
					}
				}
			}

			loadModeCatalog(userCatalog.getPath(),false);
		} //}}}

		Buffer buffer = buffersFirst;
		while(buffer != null)
		{
			// This reloads the token marker and sends a message
			// which causes edit panes to repaint their text areas
			buffer.setMode();

			buffer = buffer.next;
		}
	} //}}}

	//{{{ getMode() method
	/**
	 * Returns the edit mode with the specified name.
	 * @param name The edit mode
	 */
	public static Mode getMode(String name)
	{
		for(int i = 0; i < modes.size(); i++)
		{
			Mode mode = (Mode)modes.elementAt(i);
			if(mode.getName().equals(name))
				return mode;
		}
		return null;
	} //}}}

	//{{{ getModes() method
	/**
	 * Returns an array of installed edit modes.
	 */
	public static Mode[] getModes()
	{
		Mode[] array = new Mode[modes.size()];
		modes.copyInto(array);
		return array;
	} //}}}

	//}}}

	//{{{ Buffer creation methods

	//{{{ openFiles() method
	/**
	 * Opens the file names specified in the argument array. This
	 * handles +line and +marker arguments just like the command
	 * line parser.
	 * @param parent The parent directory
	 * @param args The file names to open
	 * @since jEdit 3.2pre4
	 */
	public static Buffer openFiles(View view, String parent, String[] args)
	{
		Buffer retVal = null;
		Buffer lastBuffer = null;

		for(int i = 0; i < args.length; i++)
		{
			String arg = args[i];
			if(arg == null)
				continue;
			else if(arg.startsWith("+line:") || arg.startsWith("+marker:"))
			{
				if(lastBuffer != null)
					gotoMarker(view,lastBuffer,arg);
				continue;
			}

			lastBuffer = openFile(null,parent,arg,false,null);

			if(retVal == null && lastBuffer != null)
				retVal = lastBuffer;
		}

		if(view != null && retVal != null)
			view.setBuffer(retVal);

		return retVal;
	} //}}}

	//{{{ openFile() method
	/**
	 * Opens a file. Note that as of jEdit 2.5pre1, this may return
	 * null if the buffer could not be opened.
	 * @param view The view to open the file in
	 * @param path The file path
	 *
	 * @since jEdit 2.4pre1
	 */
	public static Buffer openFile(View view, String path)
	{
		return openFile(view,null,path,false,new Hashtable());
	} //}}}

	//{{{ openFile() method
	/**
	 * @deprecated The openFile() forms with the readOnly parameter
	 * should not be used. The readOnly prameter is no longer supported.
	 */
	public static Buffer openFile(View view, String parent,
		String path, boolean readOnly, boolean newFile)
	{
		return openFile(view,parent,path,newFile,new Hashtable());
	} //}}}

	//{{{ openFile() method
	/**
	 * @deprecated The openFile() forms with the readOnly parameter
	 * should not be used. The readOnly prameter is no longer supported.
	 */
	public static Buffer openFile(View view, String parent,
		String path, boolean readOnly, boolean newFile,
		Hashtable props)
	{
		return openFile(view,parent,path,newFile,props);
	} //}}}

	//{{{ openFile() method
	/**
	 * Opens a file. This may return null if the buffer could not be
	 * opened for some reason.
	 * @param view The view to open the file in
	 * @param parent The parent directory of the file
	 * @param path The path name of the file
	 * @param newFile True if the file should not be loaded from disk
	 * be prompted if it should be reloaded
	 * @param props Buffer-local properties to set in the buffer
	 *
	 * @since jEdit 3.2pre10
	 */
	public static Buffer openFile(View view, String parent,
		String path, boolean newFile, Hashtable props)
	{
		PerspectiveManager.setPerspectiveDirty(true);

		if(view != null && parent == null)
			parent = view.getBuffer().getDirectory();

		if(MiscUtilities.isURL(path))
		{
			if(MiscUtilities.getProtocolOfURL(path).equals("file"))
				path = path.substring(5);
		}

		path = MiscUtilities.constructPath(parent,path);

		Buffer newBuffer;

		synchronized(bufferListLock)
		{
			Buffer buffer = getBuffer(path);
			if(buffer != null)
			{
				if(view != null)
					view.setBuffer(buffer);

				return buffer;
			}

			if(props == null)
				props = new Hashtable();

			BufferHistory.Entry entry = BufferHistory.getEntry(path);

			if(entry != null && saveCaret && props.get(Buffer.CARET) == null)
			{
				props.put(Buffer.CARET,new Integer(entry.caret));
				/* if(entry.selection != null)
				{
					// getSelection() converts from string to
					// Selection[]
					props.put(Buffer.SELECTION,entry.getSelection());
				} */
			}

			if(entry != null && props.get(Buffer.ENCODING) == null)
			{
				if(entry.encoding != null)
					props.put(Buffer.ENCODING,entry.encoding);
			}

			newBuffer = new Buffer(path,newFile,false,props);

			if(!newBuffer.load(view,false))
				return null;

			addBufferToList(newBuffer);
		}

		EditBus.send(new BufferUpdate(newBuffer,view,BufferUpdate.CREATED));

		if(view != null)
			view.setBuffer(newBuffer);

		return newBuffer;
	} //}}}

	//{{{ openTemporary() method
	/**
	 * Opens a temporary buffer. A temporary buffer is like a normal
	 * buffer, except that an event is not fired, the the buffer is
	 * not added to the buffers list.
	 *
	 * @param view The view to open the file in
	 * @param parent The parent directory of the file
	 * @param path The path name of the file
	 * @param newFile True if the file should not be loaded from disk
	 *
	 * @since jEdit 3.2pre10
	 */
	public static Buffer openTemporary(View view, String parent,
		String path, boolean newFile)
	{
		if(view != null && parent == null)
			parent = view.getBuffer().getDirectory();

		if(MiscUtilities.isURL(path))
		{
			if(MiscUtilities.getProtocolOfURL(path).equals("file"))
				path = path.substring(5);
		}

		path = MiscUtilities.constructPath(parent,path);

		synchronized(bufferListLock)
		{
			Buffer buffer = getBuffer(path);
			if(buffer != null)
				return buffer;

			buffer = new Buffer(path,newFile,true,new Hashtable());
			if(!buffer.load(view,false))
				return null;
			else
				return buffer;
		}
	} //}}}

	//{{{ commitTemporary() method
	/**
	 * Adds a temporary buffer to the buffer list. This must be done
	 * before allowing the user to interact with the buffer in any
	 * way.
	 * @param buffer The buffer
	 */
	public static void commitTemporary(Buffer buffer)
	{
		if(!buffer.isTemporary())
			return;

		PerspectiveManager.setPerspectiveDirty(true);

		addBufferToList(buffer);
		buffer.commitTemporary();

		// send full range of events to avoid breaking plugins
		EditBus.send(new BufferUpdate(buffer,null,BufferUpdate.CREATED));
		EditBus.send(new BufferUpdate(buffer,null,BufferUpdate.LOAD_STARTED));
		EditBus.send(new BufferUpdate(buffer,null,BufferUpdate.LOADED));
	} //}}}

	//{{{ newFile() method
	/**
	 * Creates a new `untitled' file.
	 * @param view The view to create the file in
	 */
	public static Buffer newFile(View view)
	{
		String path;

		if(view != null && view.getBuffer() != null)
		{
			path = view.getBuffer().getDirectory();
			VFS vfs = VFSManager.getVFSForPath(path);
			// don't want 'New File' to create a read only buffer
			// if current file is on SQL VFS or something
			if((vfs.getCapabilities() & VFS.WRITE_CAP) == 0)
				path = System.getProperty("user.home");
		}
		else
			path = null;

		return newFile(view,path);
	} //}}}

	//{{{ newFile() method
	/**
	 * Creates a new `untitled' file.
	 * @param view The view to create the file in
	 * @param dir The directory to create the file in
	 * @since jEdit 3.1pre2
	 */
	public static Buffer newFile(View view, String dir)
	{
		// If only one new file is open which is clean, just close
		// it, which will create an 'Untitled-1'
		if(dir != null
			&& buffersFirst != null
			&& buffersFirst == buffersLast
			&& buffersFirst.isUntitled()
			&& !buffersFirst.isDirty())
		{
			closeBuffer(view,buffersFirst);
			// return the newly created 'untitled-1'
			return buffersFirst;
		}

		// Find the highest Untitled-n file
		int untitledCount = 0;
		Buffer buffer = buffersFirst;
		while(buffer != null)
		{
			if(buffer.getName().startsWith("Untitled-"))
			{
				try
				{
					untitledCount = Math.max(untitledCount,
						Integer.parseInt(buffer.getName()
						.substring(9)));
				}
				catch(NumberFormatException nf)
				{
				}
			}
			buffer = buffer.next;
		}

		return openFile(view,dir,"Untitled-" + (untitledCount+1),true,null);
	} //}}}

	//}}}

	//{{{ Buffer management methods

	//{{{ closeBuffer() method
	/**
	 * Closes a buffer. If there are unsaved changes, the user is
	 * prompted if they should be saved first.
	 * @param view The view
	 * @param buffer The buffer
	 * @return True if the buffer was really closed, false otherwise
	 */
	public static boolean closeBuffer(View view, Buffer buffer)
	{
		// Wait for pending I/O requests
		if(buffer.isPerformingIO())
		{
			VFSManager.waitForRequests();
			if(VFSManager.errorOccurred())
				return false;
		}

		if(buffer.isDirty())
		{
			Object[] args = { buffer.getName() };
			int result = GUIUtilities.confirm(view,"notsaved",args,
				JOptionPane.YES_NO_CANCEL_OPTION,
				JOptionPane.WARNING_MESSAGE);
			if(result == JOptionPane.YES_OPTION)
			{
				if(!buffer.save(view,null,true))
					return false;

				VFSManager.waitForRequests();
				if(buffer.getBooleanProperty(BufferIORequest
					.ERROR_OCCURRED))
				{
					return false;
				}
			}
			else if(result != JOptionPane.NO_OPTION)
				return false;
		}

		_closeBuffer(view,buffer);

		return true;
	} //}}}

	//{{{ _closeBuffer() method
	/**
	 * Closes the buffer, even if it has unsaved changes.
	 * @param view The view, may be null
	 * @param buffer The buffer
	 *
	 * @exception NullPointerException if the buffer is null
	 *
	 * @since jEdit 2.2pre1
	 */
	public static void _closeBuffer(View view, Buffer buffer)
	{
		if(buffer.isClosed())
		{
			// can happen if the user presses C+w twice real
			// quick and the buffer has unsaved changes
			return;
		}

		PerspectiveManager.setPerspectiveDirty(true);

		if(!buffer.isNewFile())
		{
			if(view != null)
				view.getEditPane().saveCaretInfo();
			Integer _caret = (Integer)buffer.getProperty(Buffer.CARET);
			int caret = (_caret == null ? 0 : _caret.intValue());

			BufferHistory.setEntry(buffer.getPath(),caret,
				(Selection[])buffer.getProperty(Buffer.SELECTION),
				buffer.getStringProperty(Buffer.ENCODING));
		}

		String path = buffer.getSymlinkPath();
		if((VFSManager.getVFSForPath(path).getCapabilities()
			& VFS.CASE_INSENSITIVE_CAP) != 0)
		{
			path = path.toLowerCase();
		}
		bufferHash.remove(path);
		removeBufferFromList(buffer);
		buffer.close();
		DisplayManager.bufferClosed(buffer);

		EditBus.send(new BufferUpdate(buffer,view,BufferUpdate.CLOSED));

		// Create a new file when the last is closed
		if(buffersFirst == null && buffersLast == null)
			newFile(view);
	} //}}}

	//{{{ closeAllBuffers() method
	/**
	 * Closes all open buffers.
	 * @param view The view
	 */
	public static boolean closeAllBuffers(View view)
	{
		return closeAllBuffers(view,false);
	} //}}}

	//{{{ closeAllBuffers() method
	/**
	 * Closes all open buffers.
	 * @param view The view
	 * @param isExiting This must be false unless this method is
	 * being called by the exit() method
	 */
	public static boolean closeAllBuffers(View view, boolean isExiting)
	{
		if(view != null)
			view.getEditPane().saveCaretInfo();

		boolean dirty = false;

		Buffer buffer = buffersFirst;
		while(buffer != null)
		{
			if(buffer.isDirty())
			{
				dirty = true;
				break;
			}
			buffer = buffer.next;
		}

		if(dirty)
		{
			boolean ok = new CloseDialog(view).isOK();
			if(!ok)
				return false;
		}

		// Wait for pending I/O requests
		VFSManager.waitForRequests();
		if(VFSManager.errorOccurred())
			return false;

		// close remaining buffers (the close dialog only deals with
		// dirty ones)

		buffer = buffersFirst;

		// zero it here so that BufferTabs doesn't have any problems
		buffersFirst = buffersLast = null;
		bufferHash.clear();
		bufferCount = 0;

		while(buffer != null)
		{
			if(!buffer.isNewFile())
			{
				Integer _caret = (Integer)buffer.getProperty(Buffer.CARET);
				int caret = (_caret == null ? 0 : _caret.intValue());
				BufferHistory.setEntry(buffer.getPath(),caret,
					(Selection[])buffer.getProperty(Buffer.SELECTION),
					buffer.getStringProperty(Buffer.ENCODING));
			}

			buffer.close();
			DisplayManager.bufferClosed(buffer);
			if(!isExiting)
			{
				EditBus.send(new BufferUpdate(buffer,view,
					BufferUpdate.CLOSED));
			}
			buffer = buffer.next;
		}

		if(!isExiting)
			newFile(view);

		PerspectiveManager.setPerspectiveDirty(true);

		return true;
	} //}}}

	//{{{ saveAllBuffers() method
	/**
	 * Saves all open buffers.
	 * @param view The view
	 * @since jEdit 4.2pre1
	 */
	public static void saveAllBuffers(View view)
	{
		saveAllBuffers(view,jEdit.getBooleanProperty("confirmSaveAll"));
	} //}}}

	//{{{ saveAllBuffers() method
	/**
	 * Saves all open buffers.
	 * @param view The view
	 * @param confirm If true, a confirmation dialog will be shown first
	 * @since jEdit 2.7pre2
	 */
	public static void saveAllBuffers(View view, boolean confirm)
	{
		if(confirm)
		{
			int result = GUIUtilities.confirm(view,"saveall",null,
				JOptionPane.YES_NO_OPTION,
				JOptionPane.QUESTION_MESSAGE);
			if(result != JOptionPane.YES_OPTION)
				return;
		}

		Buffer current = view.getBuffer();

		Buffer buffer = buffersFirst;
		while(buffer != null)
		{
			if(buffer.isDirty())
			{
				if(buffer.isNewFile())
					view.setBuffer(buffer);
				buffer.save(view,null,true);
			}

			buffer = buffer.next;
		}

		view.setBuffer(current);
	} //}}}

	//{{{ reloadAllBuffers() method
	/**
	 * Reloads all open buffers.
	 * @param view The view
	 * @param confirm If true, a confirmation dialog will be shown first
	 *	if any buffers are dirty
	 * @since jEdit 2.7pre2
	 */
	public static void reloadAllBuffers(final View view, boolean confirm)
	{
		boolean hasDirty = false;
		Buffer[] buffers = jEdit.getBuffers();

		for(int i = 0; i < buffers.length && hasDirty == false; i++)
			hasDirty = buffers[i].isDirty();

		if(confirm && hasDirty)
		{
			int result = GUIUtilities.confirm(view,"reload-all",null,
				JOptionPane.YES_NO_OPTION,
				JOptionPane.QUESTION_MESSAGE);
			if(result != JOptionPane.YES_OPTION)
				return;
		}

		// save caret info. Buffer.load() will load it.
		View _view = viewsFirst;
		while(_view != null)
		{
			EditPane[] panes = _view.getEditPanes();
			for(int i = 0; i < panes.length; i++)
			{
				panes[i].saveCaretInfo();
			}

			_view = _view.next;
		}

		for(int i = 0; i < buffers.length; i++)
		{
			Buffer buffer = buffers[i];
			buffer.load(view,true);
		}
	} //}}}

	//{{{ _getBuffer() method
	/**
	 * Returns the buffer with the specified path name. The path name
	 * must be an absolute, canonical, path.
	 *
	 * @param path The path name
	 * @see MiscUtilities#constructPath(String,String)
	 * @see MiscUtilities#resolveSymlinks(String)
	 * @see #getBuffer(String)
	 *
	 * @since jEdit 4.2pre7
	 */
	public static Buffer _getBuffer(String path)
	{
		// paths on case-insensitive filesystems are stored as lower
		// case in the hash.
		if((VFSManager.getVFSForPath(path).getCapabilities()
			& VFS.CASE_INSENSITIVE_CAP) != 0)
		{
			path = path.toLowerCase();
		}

		synchronized(bufferListLock)
		{
			return (Buffer)bufferHash.get(path);
		}
	} //}}}

	//{{{ getBuffer() method
	/**
	 * Returns the buffer with the specified path name. The path name
	 * must be an absolute path. This method automatically resolves
	 * symbolic links. If performance is critical, cache the canonical
	 * path and call {@link #_getBuffer(String)} instead.
	 *
	 * @param path The path name
	 * @see MiscUtilities#constructPath(String,String)
	 * @see MiscUtilities#resolveSymlinks(String)
	 */
	public static Buffer getBuffer(String path)
	{
		return _getBuffer(MiscUtilities.resolveSymlinks(path));
	} //}}}

	//{{{ getBuffers() method
	/**
	 * Returns an array of open buffers.
	 */
	public static Buffer[] getBuffers()
	{
		synchronized(bufferListLock)
		{
			Buffer[] buffers = new Buffer[bufferCount];
			Buffer buffer = buffersFirst;
			for(int i = 0; i < bufferCount; i++)
			{
				buffers[i] = buffer;
				buffer = buffer.next;
			}
			return buffers;
		}
	} //}}}

	//{{{ getBufferCount() method
	/**
	 * Returns the number of open buffers.
	 */
	public static int getBufferCount()
	{
		return bufferCount;
	} //}}}

	//{{{ getFirstBuffer() method
	/**
	 * Returns the first buffer.
	 */
	public static Buffer getFirstBuffer()
	{
		return buffersFirst;
	} //}}}

	//{{{ getLastBuffer() method
	/**
	 * Returns the last buffer.
	 */
	public static Buffer getLastBuffer()
	{
		return buffersLast;
	} //}}}

	//{{{ checkBufferStatus() method
	/**
	 * Checks each buffer's status on disk and shows the dialog box
	 * informing the user that buffers changed on disk, if necessary.
	 * @param view The view
	 * @since jEdit 4.2pre1
	 */
	public static void checkBufferStatus(View view)
	{
		// still need to call the status check even if the option is
		// off, so that the write protection is updated if it changes
		// on disk
		boolean showDialogSetting = getBooleanProperty(
			"autoReloadDialog");

		// auto reload changed buffers?
		boolean autoReloadSetting = getBooleanProperty(
			"autoReload");

		// the problem with this is that if we have two edit panes
		// looking at the same buffer and the file is reloaded both
		// will jump to the same location
		View _view = viewsFirst;
		while(_view != null)
		{
			EditPane[] editPanes = _view.getEditPanes();
			for(int i = 0; i < editPanes.length; i++)
			{
				editPanes[i].saveCaretInfo();
			}
			_view = _view.next;
		}

		Buffer buffer = buffersFirst;
		int[] states = new int[bufferCount];
		int i = 0;
		boolean show = false;
		while(buffer != null)
		{
			states[i] = buffer.checkFileStatus(view);

			switch(states[i])
			{
			case Buffer.FILE_CHANGED:
				if(autoReloadSetting
					&& showDialogSetting
					&& !buffer.isDirty())
				{
					buffer.load(view,true);
				}
				/* fall through */
			case Buffer.FILE_DELETED:
				show = true;
				break;
			}

			buffer = buffer.next;
			i++;
		}

		if(show && showDialogSetting)
			new FilesChangedDialog(view,states,autoReloadSetting);
	} //}}}

	//}}}

	//{{{ View methods

	//{{{ getInputHandler() method
	/**
	 * Returns the current input handler (key binding to action mapping)
	 * @see org.gjt.sp.jedit.gui.InputHandler
	 */
	public static InputHandler getInputHandler()
	{
		return inputHandler;
	} //}}}

	/* public static void newViewTest()
	{
		long time = System.currentTimeMillis();
		for(int i = 0; i < 30; i++)
		{
			Buffer b = newFile(null);
			b.insert(0,"x");
			new View(b,null,false);
		}
		System.err.println(System.currentTimeMillis() - time);
	} */

	//{{{ newView() method
	/**
	 * Creates a new view.
	 * @param view An existing view
	 * @since jEdit 3.2pre2
	 */
	public static View newView(View view)
	{
		return newView(view,null,false);
	} //}}}

	//{{{ newView() method
	/**
	 * Creates a new view of a buffer.
	 * @param view An existing view
	 * @param buffer The buffer
	 */
	public static View newView(View view, Buffer buffer)
	{
		return newView(view,buffer,false);
	} //}}}

	//{{{ newView() method
	/**
	 * Creates a new view of a buffer.
	 * @param view An existing view
	 * @param buffer The buffer
	 * @param plainView If true, the view will not have dockable windows or
	 * tool bars.
	 *
	 * @since 4.1pre2
	 */
	public static View newView(View view, Buffer buffer, boolean plainView)
	{
		View.ViewConfig config;
		if(view != null && (plainView == view.isPlainView()))
			config = view.getViewConfig();
		else
			config = new View.ViewConfig(plainView);
		return newView(view,buffer,config);
	} //}}}

	//{{{ newView() method
	/**
	 * Creates a new view.
	 * @param view An existing view
	 * @param buffer A buffer to display, or null
	 * @param config Encapsulates the view geometry, split configuration
	 * and if the view is a plain view
	 * @since jEdit 4.2pre1
	 */
	public static View newView(View view, Buffer buffer, View.ViewConfig config)
	{
		PerspectiveManager.setPerspectiveDirty(true);

		try
		{
			if(view != null)
			{
				view.showWaitCursor();
				view.getEditPane().saveCaretInfo();
			}

			View newView = new View(buffer,config);
			addViewToList(newView);

			if(!config.plainView)
			{
				DockableWindowManager wm = newView.getDockableWindowManager();
				if(config.top != null
					&& config.top.length() != 0)
					wm.showDockableWindow(config.top);

				if(config.left != null
					&& config.left.length() != 0)
					wm.showDockableWindow(config.left);

				if(config.bottom != null
					&& config.bottom.length() != 0)
					wm.showDockableWindow(config.bottom);

				if(config.right != null
					&& config.right.length() != 0)
					wm.showDockableWindow(config.right);
			}

			newView.pack();

			if(config.width != 0 && config.height != 0)
			{
				Rectangle desired = new Rectangle(
					config.x,config.y,config.width,
					config.height);
				if(OperatingSystem.isX11() && Debug.GEOMETRY_WORKAROUND)
				{
					new GUIUtilities.UnixWorkaround(newView,
						"view",desired,config.extState);
				}
				else
				{
					newView.setBounds(desired);
					GUIUtilities.setExtendedState(newView,
						config.extState);
				}
			}
			else
				GUIUtilities.centerOnScreen(newView);

			EditBus.send(new ViewUpdate(newView,ViewUpdate.CREATED));

			newView.setVisible(true);

			// show tip of the day
			if(newView == viewsFirst)
			{
				newView.getTextArea().requestFocus();

				// Don't show the welcome message if jEdit was started
				// with the -nosettings switch
				if(settingsDirectory != null && getBooleanProperty("firstTime"))
					new HelpViewer();
				else if(jEdit.getBooleanProperty("tip.show"))
					new TipOfTheDay(newView);

				setBooleanProperty("firstTime",false);
			}
			else
				GUIUtilities.requestFocus(newView,newView.getTextArea());

			return newView;
		}
		finally
		{
			if(view != null)
				view.hideWaitCursor();
		}
	} //}}}

	//{{{ closeView() method
	/**
	 * Closes a view.
	 *
	 * jEdit will exit if this was the last open view.
	 */
	public static void closeView(View view)
	{
		closeView(view,true);
	} //}}}

	//{{{ getViews() method
	/**
	 * Returns an array of all open views.
	 */
	public static View[] getViews()
	{
		View[] views = new View[viewCount];
		View view = viewsFirst;
		for(int i = 0; i < viewCount; i++)
		{
			views[i] = view;
			view = view.next;
		}
		return views;
	} //}}}

	//{{{ getViewCount() method
	/**
	 * Returns the number of open views.
	 */
	public static int getViewCount()
	{
		return viewCount;
	} //}}}

	//{{{ getFirstView() method
	/**
	 * Returns the first view.
	 */
	public static View getFirstView()
	{
		return viewsFirst;
	} //}}}

	//{{{ getLastView() method
	/**
	 * Returns the last view.
	 */
	public static View getLastView()
	{
		return viewsLast;
	} //}}}

	//{{{ getActiveView() method
	/**
	 * Returns the currently focused view.
	 * @since jEdit 4.1pre1
	 */
	public static View getActiveView()
	{
		if(activeView == null)
		{
			// eg user just closed a view and didn't focus another
			return viewsFirst;
		}
		else
			return activeView;
	} //}}}

	//}}}

	//{{{ Miscellaneous methods

	//{{{ isMainThread() method
	/**
	 * Returns true if the currently running thread is the main thread.
	 * @since jEdit 4.2pre1
	 */
	public static boolean isMainThread()
	{
		return (Thread.currentThread() == mainThread);
	} //}}}

	//{{{ isBackgroundMode() method
	/**
	 * Returns true if jEdit was started with the -background
	 * command-line switch.
	 * @since jEdit 4.0pre4
	 */
	public static boolean isBackgroundModeEnabled()
	{
		return background;
	} //}}}

	//{{{ showMemoryStatusDialog() method
	/**
	 * Performs garbage collection and displays a dialog box showing
	 * memory status.
	 * @param view The view
	 * @since jEdit 4.0pre1
	 */
	public static void showMemoryDialog(View view)
	{
		Runtime rt = Runtime.getRuntime();
		int before = (int) (rt.freeMemory() / 1024);
		System.gc();
		int after = (int) (rt.freeMemory() / 1024);
		int total = (int) (rt.totalMemory() / 1024);

		JProgressBar progress = new JProgressBar(0,total);
		progress.setValue(total - after);
		progress.setStringPainted(true);
		progress.setString(jEdit.getProperty("memory-status.use",
			new Object[] { new Integer(total - after),
			new Integer(total) }));

		Object[] message = new Object[4];
		message[0] = getProperty("memory-status.gc",
			new Object[] { new Integer(after - before) });
		message[1] = Box.createVerticalStrut(12);
		message[2] = progress;
		message[3] = Box.createVerticalStrut(6);

		JOptionPane.showMessageDialog(view,message,
			jEdit.getProperty("memory-status.title"),
			JOptionPane.INFORMATION_MESSAGE);
	} //}}}

	//{{{ getJEditHome() method
	/**
	 * Returns the jEdit install directory.
	 */
	public static String getJEditHome()
	{
		return jEditHome;
	} //}}}

	//{{{ getSettingsDirectory() method
	/**
	 * Returns the path of the directory where user-specific settings
	 * are stored. This will be null if jEdit was
	 * started with the -nosettings command-line switch; do not
	 * blindly use this method without checking for a null
	 * return value first.
	 */
	public static String getSettingsDirectory()
	{
		return settingsDirectory;
	} //}}}

	//{{{ getJARCacheDirectory() method
	/**
	 * Returns the directory where plugin cache files are stored.
	 * @since jEdit 4.2pre1
	 */
	public static String getJARCacheDirectory()
	{
		return jarCacheDirectory;
	} //}}}

	//{{{ backupSettingsFile() method
	/**
	 * Backs up the specified file in the settings directory.
	 * You should call this on any settings files your plugin
	 * writes.
	 * @param file The file
	 * @since jEdit 4.0pre1
	 */
	public static void backupSettingsFile(File file)
	{
		if(settingsDirectory == null)
			return;

		String backupDir = MiscUtilities.constructPath(
			settingsDirectory,"settings-backup");
		File dir = new File(backupDir);
		if(!dir.exists())
			dir.mkdirs();

		// ... sweet. saveBackup() will create backupDir if it
		// doesn't exist.

		MiscUtilities.saveBackup(file,5,null,"~",backupDir);
	} //}}}

	//{{{ saveSettings() method
	/**
	 * Saves all user preferences to disk.
	 */
	public static void saveSettings()
	{
		if(settingsDirectory == null)
			return;

		Abbrevs.save();
		FavoritesVFS.saveFavorites();
		HistoryModel.saveHistory();
		Registers.saveRegisters();
		SearchAndReplace.save();
		BufferHistory.save();
		KillRing.save();

		File file1 = new File(MiscUtilities.constructPath(
			settingsDirectory,"#properties#save#"));
		File file2 = new File(MiscUtilities.constructPath(
			settingsDirectory,"properties"));
		if(file2.exists() && file2.lastModified() != propsModTime)
		{
			Log.log(Log.WARNING,jEdit.class,file2 + " changed"
				+ " on disk; will not save user properties");
		}
		else
		{
			backupSettingsFile(file2);

			try
			{
				OutputStream out = new FileOutputStream(file1);
				propMgr.saveUserProps(out);
				file2.delete();
				file1.renameTo(file2);
			}
			catch(IOException io)
			{
				Log.log(Log.ERROR,jEdit.class,io);
			}

			propsModTime = file2.lastModified();
		}
	} //}}}

	//{{{ exit() method
	/**
	 * Exits cleanly from jEdit, prompting the user if any unsaved files
	 * should be saved first.
	 * @param view The view from which this exit was called
	 * @param reallyExit If background mode is enabled and this parameter
	 * is true, then jEdit will close all open views instead of exiting
	 * entirely.
	 */
	public static void exit(View view, boolean reallyExit)
	{
		// Close dialog, view.close() call need a view...
		if(view == null)
			view = activeView;

		// Wait for pending I/O requests
		VFSManager.waitForRequests();

		// Send EditorExitRequested
		EditBus.send(new EditorExitRequested(view));

		// Even if reallyExit is false, we still exit properly
		// if background mode is off
		reallyExit |= !background;

		PerspectiveManager.savePerspective(false);

		// Close all buffers
		if(!closeAllBuffers(view,reallyExit))
			return;

		// If we are running in background mode and
		// reallyExit was not specified, then return here.
		if(!reallyExit)
		{
			// in this case, we can't directly call
			// view.close(); we have to call closeView()
			// for all open views
			view = viewsFirst;
			while(view != null)
			{
				closeView(view,false);
				view = view.next;
			}

			// Save settings in case user kills the backgrounded
			// jEdit process
			saveSettings();
		}
		else
		{
			// Save view properties here
			if(view != null)
				view.close();

			// Stop autosave timer
			Autosave.stop();

			// Stop server
			if(server != null)
				server.stopServer();

			// Stop all plugins
			PluginJAR[] plugins = getPluginJARs();
			for(int i = 0; i < plugins.length; i++)
			{
				removePluginJAR(plugins[i],true);
			}

			// Send EditorExiting
			EditBus.send(new EditorExiting(null));

			// Save settings
			saveSettings();

			// Close activity log stream
			Log.closeStream();

			// Byebye...
			System.exit(0);
		}
	} //}}}

	//{{{ getEditServer() method
	/**
	 * Returns the edit server instance. You can use this to find out the
	 * port number jEdit is listening on.
	 * @since jEdit 4.2pre10
	 */
	public static EditServer getEditServer()
	{
		return server;
	} //}}}

	//}}}

	//{{{ Package-private members

	//{{{ updatePosition() method
	/**
	 * If buffer sorting is enabled, this repositions the buffer.
	 */
	static void updatePosition(String oldPath, Buffer buffer)
	{
		if((VFSManager.getVFSForPath(oldPath).getCapabilities()
			& VFS.CASE_INSENSITIVE_CAP) != 0)
		{
			oldPath = oldPath.toLowerCase();
		}

		bufferHash.remove(oldPath);

		String path = buffer.getSymlinkPath();
		if((VFSManager.getVFSForPath(path).getCapabilities()
			& VFS.CASE_INSENSITIVE_CAP) != 0)
		{
			path = path.toLowerCase();
		}

		bufferHash.put(path,buffer);

		if(sortBuffers)
		{
			removeBufferFromList(buffer);
			addBufferToList(buffer);
		}
	} //}}}

	//{{{ addMode() method
	/**
	 * Do not call this method. It is only public so that classes
	 * in the org.gjt.sp.jedit.syntax package can access it.
	 * @param mode The edit mode
	 */
	public static void addMode(Mode mode)
	{
		//Log.log(Log.DEBUG,jEdit.class,"Adding edit mode "
		//	+ mode.getName());

		modes.addElement(mode);
	} //}}}

	//{{{ loadMode() method
	/**
	 * Loads an XML-defined edit mode from the specified reader.
	 * @param mode The edit mode
	 */
	/* package-private */ static void loadMode(Mode mode)
	{
		final String fileName = (String)mode.getProperty("file");

		Log.log(Log.NOTICE,jEdit.class,"Loading edit mode " + fileName);

		final XmlParser parser = new XmlParser();
		XModeHandler xmh = new XModeHandler(mode.getName())
		{
			public void error(String what, Object subst)
			{
				int line = parser.getLineNumber();
				int column = parser.getColumnNumber();

				String msg;

				if(subst == null)
					msg = jEdit.getProperty("xmode-error." + what);
				else
				{
					msg = jEdit.getProperty("xmode-error." + what,
						new String[] { subst.toString() });
					if(subst instanceof Throwable)
						Log.log(Log.ERROR,this,subst);
				}

				Object[] args = { fileName, new Integer(line),
					new Integer(column), msg };
				GUIUtilities.error(null,"xmode-error",args);
			}

			public TokenMarker getTokenMarker(String modeName)
			{
				Mode mode = getMode(modeName);
				if(mode == null)
					return null;
				else
					return mode.getTokenMarker();
			}
		};

		mode.setTokenMarker(xmh.getTokenMarker());

		Reader grammar = null;

		parser.setHandler(xmh);
		try
		{
			grammar = new BufferedReader(new FileReader(fileName));

			parser.parse(null, null, grammar);

			mode.setProperties(xmh.getModeProperties());
		}
		catch (Throwable e)
		{
			Log.log(Log.ERROR, jEdit.class, e);

			if (e instanceof XmlException)
			{
				XmlException xe = (XmlException) e;
				int line = xe.getLine();
				String message = xe.getMessage();

				Object[] args = { fileName, new Integer(line), null,
					message };
				GUIUtilities.error(null,"xmode-error",args);
			}
		}
		finally
		{
			try
			{
				if(grammar != null)
					grammar.close();
			}
			catch(IOException io)
			{
				Log.log(Log.ERROR,jEdit.class,io);
			}
		}
	} //}}}

	//{{{ addPluginProps() method
	static void addPluginProps(Properties map)
	{
		propMgr.addPluginProps(map);
	} //}}}

	//{{{ removePluginProps() method
	static void removePluginProps(Properties map)
	{
		propMgr.removePluginProps(map);
	} //}}}

	//{{{ pluginError() method
	static void pluginError(String path, String messageProp,
		Object[] args)
	{
		synchronized(pluginErrorLock)
		{
			if(pluginErrors == null)
				pluginErrors = new Vector();

			ErrorListDialog.ErrorEntry newEntry =
				new ErrorListDialog.ErrorEntry(
				path,messageProp,args);

			for(int i = 0; i < pluginErrors.size(); i++)
			{
				if(pluginErrors.get(i).equals(newEntry))
					return;
			}
			pluginErrors.addElement(newEntry);

			if(startupDone)
			{
				SwingUtilities.invokeLater(new Runnable()
				{
					public void run()
					{
						showPluginErrorDialog();
					}
				});
			}
		}
	} //}}}

	//{{{ setActiveView() method
	static void setActiveView(View view)
	{
		jEdit.activeView = view;
	} //}}}

	//}}}

	//{{{ Private members

	//{{{ Static variables
	private static String jEditHome;
	private static String settingsDirectory;
	private static String jarCacheDirectory;
	private static long propsModTime;
	private static PropertyManager propMgr;
	private static EditServer server;
	private static boolean background;
	private static ActionContext actionContext;
	private static ActionSet builtInActionSet;
	private static Vector pluginErrors;
	private static Object pluginErrorLock = new Object();
	private static Vector jars;
	private static Vector modes;
	private static boolean saveCaret;
	private static InputHandler inputHandler;

	// buffer link list
	private static boolean sortBuffers;
	private static boolean sortByName;
	private static int bufferCount;
	private static Buffer buffersFirst;
	private static Buffer buffersLast;
	private static Map bufferHash;

	// makes openTemporary() thread-safe
	private static Object bufferListLock = new Object();

	// view link list
	private static int viewCount;
	private static View viewsFirst;
	private static View viewsLast;
	private static View activeView;

	private static boolean startupDone;

	private static Thread mainThread;
	//}}}

	private jEdit() {}

	//{{{ usage() method
	private static void usage()
	{
		System.out.println("Usage: jedit [] []");

		System.out.println("	 +marker:: Positions caret"
			+ " at marker ");
		System.out.println("	 +line:: Positions caret"
			+ " at line number ");
		System.out.println("	--: End of options");
		System.out.println("	-background: Run in background mode");
		System.out.println("	-nobackground: Disable background mode (default)");
		System.out.println("	-gui: Only if running in background mode; open initial view (default)");
		System.out.println("	-nogui: Only if running in background mode; don't open initial view");
		System.out.println("	-log=: Log messages with level equal to or higher than this to");
		System.out.println("	 standard error.  must be between 1 and 9. Default is 7.");
		System.out.println("	-newplainview: Client instance opens a new plain view");
		System.out.println("	-newview: Client instance opens a new view (default)");
		System.out.println("	-plugins: Load plugins (default)");
		System.out.println("	-noplugins: Don't load any plugins");
		System.out.println("	-restore: Restore previously open files (default)");
		System.out.println("	-norestore: Don't restore previously open files");
		System.out.println("	-reuseview: Client instance reuses existing view");
		System.out.println("	-quit: Quit a running instance");
		System.out.println("	-run=