prettyprintwriter.java

struts 2 核心包 的源码 有错误是难免的

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   PrettyPrintWriter.java

package org.apache.struts2.interceptor.debugging;

import java.io.PrintWriter;
import java.io.Writer;
import java.util.Stack;

public class PrettyPrintWriter
{

	private final PrintWriter writer;
	private final Stack elementStack;
	private final char lineIndenter[];
	private boolean tagInProgress;
	private int depth;
	private boolean readyForNewLine;
	private boolean tagIsEmpty;
	private String newLine;
	private static final char NULL[] = "�".toCharArray();
	private static final char AMP[] = "&".toCharArray();
	private static final char LT[] = "<".toCharArray();
	private static final char GT[] = ">".toCharArray();
	private static final char SLASH_R[] = "
".toCharArray();
	private static final char QUOT[] = """.toCharArray();
	private static final char APOS[] = "'".toCharArray();
	private static final char CLOSE[] = "</".toCharArray();

	public PrettyPrintWriter(Writer writer, char lineIndenter[], String newLine)
	{
		elementStack = new Stack();
		this.writer = new PrintWriter(writer);
		this.lineIndenter = lineIndenter;
		this.newLine = newLine;
	}

	public PrettyPrintWriter(Writer writer, char lineIndenter[])
	{
		this(writer, lineIndenter, "\n");
	}

	public PrettyPrintWriter(Writer writer, String lineIndenter, String newLine)
	{
		this(writer, lineIndenter.toCharArray(), newLine);
	}

	public PrettyPrintWriter(Writer writer, String lineIndenter)
	{
		this(writer, lineIndenter.toCharArray());
	}

	public PrettyPrintWriter(Writer writer)
	{
		this(writer, new char[] {
			' ', ' '
		});
	}

	public void startNode(String name)
	{
		tagIsEmpty = false;
		finishTag();
		writer.write(60);
		writer.write(name);
		elementStack.push(name);
		tagInProgress = true;
		depth++;
		readyForNewLine = true;
		tagIsEmpty = true;
	}

	public void setValue(String text)
	{
		readyForNewLine = false;
		tagIsEmpty = false;
		finishTag();
		writeText(writer, text);
	}

	public void addAttribute(String key, String value)
	{
		writer.write(32);
		writer.write(key);
		writer.write(61);
		writer.write(34);
		writeAttributeValue(writer, value);
		writer.write(34);
	}

	protected void writeAttributeValue(PrintWriter writer, String text)
	{
		writeText(text);
	}

	protected void writeText(PrintWriter writer, String text)
	{
		writeText(text);
	}

	private void writeText(String text)
	{
		int length = text.length();
		for (int i = 0; i < length; i++)
		{
			char c = text.charAt(i);
			switch (c)
			{
			case 0: // '\0'
				writer.write(NULL);
				break;

			case 38: // '&'
				writer.write(AMP);
				break;

			case 60: // '<'
				writer.write(LT);
				break;

			case 62: // '>'
				writer.write(GT);
				break;

			case 34: // '"'
				writer.write(QUOT);
				break;

			case 39: // '\''
				writer.write(APOS);
				break;

			case 13: // '\r'
				writer.write(SLASH_R);
				break;

			default:
				writer.write(c);
				break;
			}
		}

	}

	public void endNode()
	{
		depth--;
		if (tagIsEmpty)
		{
			writer.write(47);
			readyForNewLine = false;
			finishTag();
			elementStack.pop();
		} else
		{
			finishTag();
			writer.write(CLOSE);
			writer.write((String)elementStack.pop());
			writer.write(62);
		}
		readyForNewLine = true;
		if (depth == 0)
			writer.flush();
	}

	private void finishTag()
	{
		if (tagInProgress)
			writer.write(62);
		tagInProgress = false;
		if (readyForNewLine)
			endOfLine();
		readyForNewLine = false;
		tagIsEmpty = false;
	}

	protected void endOfLine()
	{
		writer.write(newLine);
		for (int i = 0; i < depth; i++)
			writer.write(lineIndenter);

	}

	public void flush()
	{
		writer.flush();
	}

	public void close()
	{
		writer.close();
	}

}