java.fedora.utilities.policyEditor.XMLPrintWriter Maven / Gradle / Ivy

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The Fedora Client is a Java Library that allows API access to a Fedora Repository. The client is typically one part of a full Fedora installation.
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/*
 * -----------------------------------------------------------------------------
 *
 * License and Copyright: The contents of this file are subject to the
 * Apache License, Version 2.0 (the "License"); you may not use 
 * this file except in compliance with the License. You may obtain a copy of 
 * the License at 
 * http://www.fedora-commons.org/licenses.
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 *
 * The entire file consists of original code.
 * Copyright © 2008 Fedora Commons, Inc.

 * 
Copyright © 2002-2007 The Rector and Visitors of the University of 
 * Virginia and Cornell University
 
 * All rights reserved.
 *
 * -----------------------------------------------------------------------------
 */
/*
 * Created on Jun 10, 2005
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package fedora.utilities.policyEditor;

import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.regex.Pattern;

/**
 * @author diglib
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class XMLPrintWriter extends PrintWriter
{
    private int curIndentLevel = 0;
    private int spacesForIndent;
    private int spacesForHangingIndent;
    public static String sep = "";
    private static String spaces= "                                                        ";
    private static Pattern XMLDec;
    private static Pattern open;
    private static Pattern open2;
    private static Pattern close;
    private static Pattern close2;
    private static Pattern close3;
    private static Pattern openNClose1;
    
    static 
    {
        sep = System.getProperty("line.separator");
        XMLDec = Pattern.compile("<\\?xml[^>?]*\\?>");
        open = Pattern.compile("<([^/][^ >]*) ?[^>]*?>");
        open2 = Pattern.compile("<[^ >]*?[^>]*");
        close = Pattern.compile("]*?>");
        close2 = Pattern.compile("[^<>]*?/>");
        close3 = Pattern.compile("[^<>]*?>");
        openNClose1 = Pattern.compile("<([^ >]*)[^>]*?/>");
    }
    
    public XMLPrintWriter(FileWriter out)
    {
        super(out);
        this.spacesForIndent = 4;
        this.spacesForHangingIndent = 8;
    }
    
    public XMLPrintWriter(FileWriter out, int spacesForIndent, int spacesForHangingIndent)
    {
        super(out);
        this.spacesForIndent = spacesForIndent;
        this.spacesForHangingIndent = spacesForHangingIndent;
        
    }
    
    public void printlnWithIndent(String outputLine)
    {
        String lines[] = outputLine.split(sep);
        for (int i = 0; i < lines.length; i++)
        {
            lines[i] = lines[i].trim();
//            System.out.println("{"+lines[i]+"}");
            if (lines[i].length() == 0) continue;
            int preAdjust = preAdjustIndentLevel(lines[i]);
            int postAdjust= postAdjustIndentLevel(lines[i]);
            if (curIndentLevel+preAdjust >= 0) curIndentLevel += preAdjust;
//            super.println(spaces.substring(0, curIndentLevel)+
//                    "["+preAdjust+"]"+lines[i]+
//                    "["+postAdjust+"]");
            super.println(spaces.substring(0, curIndentLevel)+lines[i]);
            if (curIndentLevel+postAdjust >= 0) curIndentLevel += postAdjust;
        }
    }
    
    private int preAdjustIndentLevel(String line)
    {
        if (XMLDec.matcher(line).find())      return(0);
        if (openNClose1.matcher(line).find()) return(0);
        if (open.matcher(line).find()&&
                close.matcher(line).find()) 
        {
            return(0);
        }
        if (close.matcher(line).find())        return(-spacesForIndent);
        if (close2.matcher(line).find())       return(0);
        if (close3.matcher(line).matches())    return(0);
        if (open.matcher(line).find())         return(0);
        if (open2.matcher(line).find())        return(0);
        return(0);
    }
    
    private int postAdjustIndentLevel(String line)
    {
        if (XMLDec.matcher(line).find())      return(0);
        if (openNClose1.matcher(line).find()) return(0);
        if (open.matcher(line).find()&&
            close.matcher(line).find())       return(0);
        if (close.matcher(line).find())       return(0);
        if (close2.matcher(line).find())      return(-spacesForHangingIndent);
        if (close3.matcher(line).matches())   return(spacesForIndent-spacesForHangingIndent);
        if (open.matcher(line).find())        return(spacesForIndent);
        if (open2.matcher(line).find())       return(spacesForHangingIndent);
        return(0);
    }
    

}