/* * PluginListHandler.java - XML handler for the plugin list * Copyright (C) 2001 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.pluginmgr;import com.microstar.xml.*;import java.io.*;import java.util.Stack;import org.gjt.sp.util.Log;class PluginListHandler extends HandlerBase{	PluginListHandler(PluginList pluginList, String path)	{		this.pluginList = pluginList;		this.path = path;		stateStack = new Stack();	}	public Object resolveEntity(String publicId, String systemId)	{		if("plugins.dtd".equals(systemId))		{			// this will result in a slight speed up, since we			// don't need to read the DTD anyway, as AElfred is			// non-validating			return new StringReader("<!-- -->");			/* try			{				return new BufferedReader(new InputStreamReader(					getClass().getResourceAsStream(					"/org/gjt/sp/jedit/pluginmgr/plugins.dtd")));			}			catch(Exception e)			{				Log.log(Log.ERROR,this,"Error while opening"					+ " plugins.dtd:");				Log.log(Log.ERROR,this,e);			} */		}		return null;	}	public void attribute(String aname, String value, boolean isSpecified)	{		aname = (aname == null) ? null : aname.intern();		value = (value == null) ? null : value.intern();		if(aname == "NAME")			name = value;		else if(aname == "JAR")			jar = value;		else if(aname == "VERSION")			version = value;		else if(aname == "DATE")			date = value;		else if(aname == "OBSOLETE")			obsolete = ("TRUE".equals(value));		else if(aname == "WHAT")			depWhat = value;		else if(aname == "FROM")			depFrom = value;		else if(aname == "TO")			depTo = value;		else if(aname == "PLUGIN")			depPlugin = value;		else if(aname == "SIZE")		{			size = Integer.parseInt(value);			if(size == 0)				Log.log(Log.WARNING,this,"SIZE = 0");		}	}	public void doctypeDecl(String name, String publicId,		String systemId) throws Exception	{		if("PLUGINS".equals(name))			return;		Log.log(Log.ERROR,this,path + ": DOCTYPE must be PLUGINS");	}	public void charData(char[] c, int off, int len)	{		String tag = peekElement();		String text = new String(c, off, len);		if(tag == "DESCRIPTION")		{			description = text;		}		else if(tag == "PLUGIN_SET_ENTRY")			pluginSetEntry = text;		else if(tag == "AUTHOR")		{			if(author != null && author.length() != 0)				author = author + ", " + text;			else				author = text;		}		else if(tag == "DOWNLOAD")			download = text;		else if(tag == "DOWNLOAD_SOURCE")			downloadSource = text;	}	public void startElement(String tag)	{		tag = pushElement(tag);		if(tag == "PLUGIN_SET")		{			description = null;			pluginSet = new PluginList.PluginSet();			pluginSet.name = name;		}		else if(tag == "PLUGIN")		{			description = null;			author = null;			branch = null;			plugin = new PluginList.Plugin();		}		else if(tag == "BRANCH")		{			download = null;			branch = new PluginList.Branch();		}		else if(tag == "DOWNLOAD")			downloadSize = size;		else if(tag == "DOWNLOAD_SOURCE")			downloadSourceSize = size;	}	public void endElement(String tag)	{		if(tag == null)			return;		else			tag = tag.intern();		popElement();		if(tag == "PLUGIN_SET")		{			pluginList.addPluginSet(pluginSet);			pluginSet = null;			pluginSetEntry = null;		}		else if(tag == "PLUGIN_SET_ENTRY")		{			pluginSet.plugins.addElement(pluginSetEntry);			pluginSetEntry = null;		}		else if(tag == "PLUGIN")		{			plugin.jar = jar;			plugin.name = name;			plugin.author = author;			plugin.description = description;			pluginList.addPlugin(plugin);			jar = null;			name = null;			author = null;		}		else if(tag == "BRANCH")		{			branch.version = version;			branch.date = date;			branch.download = download;			branch.downloadSize = downloadSize;			branch.downloadSource = downloadSource;			branch.downloadSourceSize = downloadSourceSize;			branch.obsolete = obsolete;			plugin.branches.addElement(branch);			version = null;			download = null;			obsolete = false;		}		else if(tag == "DEPEND")		{			PluginList.Dependency dep = new PluginList.Dependency(				depWhat,depFrom,depTo,depPlugin);			branch.deps.addElement(dep);			depWhat = null;			depFrom = null;			depTo = null;			depPlugin = null;		}	}	public void startDocument()	{		try		{			pushElement(null);		}		catch (Exception e)		{			e.printStackTrace();		}	}	public void endDocument()	{		pluginList.finished();	}	// end HandlerBase implementation	// private members	private String path;	private PluginList pluginList;	private PluginList.PluginSet pluginSet;	private String pluginSetEntry;	private PluginList.Plugin plugin;	private String jar;	private String author;	private PluginList.Branch branch;	private boolean obsolete;	private String version;	private String date;	private String download;	private int downloadSize;	private String downloadSource;	private int downloadSourceSize;	private int size;	private String depWhat;	private String depFrom;	private String depTo;	private String depPlugin;	private String name;	private String description;	private Stack stateStack;	private String pushElement(String name)	{		name = (name == null) ? null : name.intern();		stateStack.push(name);		return name;	}	private String peekElement()	{		return (String) stateStack.peek();	}	private String popElement()	{		return (String) stateStack.pop();	}}