juneau-doc/src/main/java/org/apache/juneau/doc/internal/PropertyTag.java

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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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package org.apache.juneau.doc.internal;


import com.sun.tools.doclets.Taglet;
import com.sun.javadoc.*;

import java.util.Map;

/**
 * Implements the <c>{@property link}</c> tag that simply resolves system properties.
 */
public class PropertyTag implements Taglet {

	private static final String NAME = "property";

	@Override
	public String getName() {
		return NAME;
	}

	@Override
	public boolean inField() {
		return true;
	}

	@Override
	public boolean inConstructor() {
		return true;
	}

	@Override
	public boolean inMethod() {
		return true;
	}

	@Override
	public boolean inOverview() {
		return true;
	}

	@Override
	public boolean inPackage() {
		return true;
	}

	@Override
	public boolean inType() {
		return true;
	}

	@Override
	public boolean isInlineTag() {
		return true;
	}

	@SuppressWarnings({ "javadoc", "rawtypes", "unchecked" })
	public static void register(Map tagletMap) {
		PropertyTag tag = new PropertyTag();
		tagletMap.put(tag.getName(), tag);
	}

	@Override
	public String toString(Tag tag) {
		String s = System.getProperty(tag.text());
		if (s == null)
			System.err.println("Unknown system property '"+tag.text()+"'");
		return s == null ? tag.text() : s;
	}

	@Override
	public String toString(Tag[] tags) {
		return null;
	}
}