org.eclipse.core.internal.resources.XMLWriter Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of aspectjtools Show documentation

AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

There is a newer version: 1.9.22.1

Show newest version

/*******************************************************************************
 * Copyright (c) 2000, 2017 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     James Blackburn (Broadcom Corp.) - ongoing development
 *******************************************************************************/
package org.eclipse.core.internal.resources;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

/**
 * A simple XML writer.
 */
public class XMLWriter extends PrintWriter {
	protected int tab;
	protected String lineSeparator;

	/* constants */
	protected static final String XML_VERSION = ""; //$NON-NLS-1$

	public XMLWriter(OutputStream output, String separator) {
		super(new OutputStreamWriter(output, StandardCharsets.UTF_8));
		tab = 0;
		lineSeparator = separator;
		println(XML_VERSION);
	}

	public void endTag(String name) {
		tab--;
		printTag('/' + name, null);
	}

	@Override
	public void println(String x) {
		super.print(x);
		super.print(lineSeparator);
	}

	public void printSimpleTag(String name, Object value) {
		if (value != null) {
			printTag(name, null, true, false);
			print(getEscaped(String.valueOf(value)));
			printTag('/' + name, null, false, true);
		}
	}

	public void printTabulation() {
		for (int i = 0; i < tab; i++)
			super.print('\t');
	}

	public void printTag(String name, HashMap parameters) {
		printTag(name, parameters, true, true);
	}

	public void printTag(String name, HashMap parameters, boolean shouldTab, boolean newLine) {
		StringBuilder sb = new StringBuilder();
		sb.append("<"); //$NON-NLS-1$
		sb.append(name);
		if (parameters != null)
			for (Map.Entry entry : parameters.entrySet()) {
				sb.append(" "); //$NON-NLS-1$
				String key = entry.getKey();
				sb.append(key);
				sb.append("=\""); //$NON-NLS-1$
				sb.append(getEscaped(String.valueOf(entry.getValue())));
				sb.append("\""); //$NON-NLS-1$
			}
		sb.append(">"); //$NON-NLS-1$
		if (shouldTab)
			printTabulation();
		if (newLine)
			println(sb.toString());
		else
			print(sb.toString());
	}

	public void startTag(String name, HashMap parameters) {
		startTag(name, parameters, true);
	}

	public void startTag(String name, HashMap parameters, boolean newLine) {
		printTag(name, parameters, true, newLine);
		tab++;
	}

	private static void appendEscapedChar(StringBuilder buffer, char c) {
		String replacement = getReplacement(c);
		if (replacement != null) {
			buffer.append('&');
			buffer.append(replacement);
			buffer.append(';');
		} else {
			buffer.append(c);
		}
	}

	public static String getEscaped(String s) {
		StringBuilder result = new StringBuilder(s.length() + 10);
		for (int i = 0; i < s.length(); ++i)
			appendEscapedChar(result, s.charAt(i));
		return result.toString();
	}

	private static String getReplacement(char c) {
		// Encode special XML characters into the equivalent character references.
		// These five are defined by default for all XML documents.
		switch (c) {
			case '<' :
				return "lt"; //$NON-NLS-1$
			case '>' :
				return "gt"; //$NON-NLS-1$
			case '"' :
				return "quot"; //$NON-NLS-1$
			case '\'' :
				return "apos"; //$NON-NLS-1$
			case '&' :
				return "amp"; //$NON-NLS-1$
		}
		return null;
	}
}