content: package com.japisoft.editix.ui.panels.snippet;
  
  import java.io.File;
  import java.io.FileReader;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.io.InputStreamReader;
  import java.io.Reader;
  import java.net.URL;
  
  import com.japisoft.framework.ApplicationModel;
  import com.japisoft.framework.xml.parser.ParseException;
  import com.japisoft.framework.xml.parser.FPParser;
  import com.japisoft.framework.xml.parser.document.Document;
  import com.japisoft.framework.xml.parser.node.FPNode;
  import com.japisoft.framework.xml.parser.node.NodeFactoryImpl;
  
  /**
  This program is available under two licenses : 
  
  1. For non commercial usage : 
  
  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 3 of the License, or
  (at your option) 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, see <http://www.gnu.org/licenses/>.
  
  2. For commercial usage :
  
  You need to get a commercial license for source usage at : 
  
  http://www.editix.com/buy.html
  
  Copyright (c) 2018 Alexandre Brillant - JAPISOFT SARL - http://www.japisoft.com
  
  @author Alexandre Brillant - abrillant@japisoft.com
  @author JAPISOFT SARL - http://www.japisoft.com
  
  */
  public class SnippetTool {
  
  	static FPNode currentRoot;
  	
  	static FPNode getRoot() throws IOException {
  		
  		if ( currentRoot != null )
  			return currentRoot;
  
  		File f = new File(
  				ApplicationModel.getAppUserPath(),
  				"snippets.xml" );
  		if ( !f.exists() ) {
  
  			return getDefaultRoot();
  			
  		} else
  			return getRoot( new FileReader( f ) );
  
  	}
  
  	private static FPNode getDefaultRoot() throws IOException {
  		
  		URL u = SnippetTool.class.getResource( "snippets.xml" );
  		if ( u == null ) {
  			// Pb with the default snippets ?
  			FPNode n = new FPNode( 
  					FPNode.TAG_NODE, 
  					"group" );
  			n.setAttribute( 
  					"name", 
  					"snippets" );
  			currentRoot = n;
  			return n;
  		} else {
  			return getRoot(
  					new InputStreamReader( u.openStream() )
  			);
  		}
  	}
  
  	private static FPNode getRoot( Reader r ) throws IOException {
  
  		try {
  			FPParser p = new FPParser();
  			Document d = p.parse(r);
  			return ( currentRoot = ( FPNode )d.getRoot() );
  		} catch (ParseException e) {
  			throw new IOException( "Can't parse the snippets file : " + e.getMessage() ); 
  		}
  
  	}
  
  	public static void storeSnippetsFile() throws IOException {
  
  		if ( currentRoot == null )
  			return;	//?
  
  		File f = new File(
  				ApplicationModel.getAppUserPath(),
  				"snippets.xml" );
  
  		Document d = currentRoot.getDocument();
  		d.write( new FileWriter( f ) );
  		
  	}
  	
  }
  