net.sourceforge.plantuml.png.Metadata Maven / Gradle / Ivy

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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
 * If you like this project or if you find it useful, you can support us at:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
 * https://plantuml.com/liberapay (only 1€ per month!)
 * https://plantuml.com/paypal
 *
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see .
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this LGPL license.
 *
 * The generated images can then be used without any reference to the LGPL license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
 * by the very same license.
 *
 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.png;

import java.io.IOException;
import java.util.Iterator;

import javax.imageio.ImageReader;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.stream.ImageInputStream;

import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

import net.sourceforge.plantuml.security.SFile;
import net.sourceforge.plantuml.security.SImageIO;

public class Metadata {
	// ::remove file when __CORE__

	public static void main(String[] args) throws IOException {
		final Metadata meta = new Metadata();
		final int length = args.length;
		for (int i = 0; i < length; i++) {
			meta.readAndDisplayMetadata(new SFile(args[i]));
		}
	}

	public void readAndDisplayMetadata(SFile file) throws IOException {
		final ImageInputStream iis = SImageIO.createImageInputStream(file);
		final Iterator readers = SImageIO.getImageReaders(iis);

		if (readers.hasNext()) {
			// pick the first available ImageReader
			final ImageReader reader = readers.next();

			// attach source to the reader
			reader.setInput(iis, true);

			// read metadata of first image
			final IIOMetadata metadata = reader.getImageMetadata(0);

			final String[] names = metadata.getMetadataFormatNames();
			final int length = names.length;
			for (int i = 0; i < length; i++) {
				displayMetadata(metadata.getAsTree(names[i]));
			}
		}
	}

	private void displayMetadata(Node root) {
		displayMetadata(root, 0);
	}

	private void indent(int level) {
		for (int i = 0; i < level; i++) {
			System.out.print("    ");
		}
	}

	private void displayMetadata(Node node, int level) {
		// print open tag of element
		indent(level);
		System.out.print("<" + node.getNodeName());
		final NamedNodeMap map = node.getAttributes();
		if (map != null) {

			// print attribute values
			final int length = map.getLength();
			for (int i = 0; i < length; i++) {
				final Node attr = map.item(i);
				System.out.print(" " + attr.getNodeName() + "=\"" + attr.getNodeValue() + "\"");
			}
		}

		Node child = node.getFirstChild();
		if (child == null) {
			// no children, so close element and return
			System.out.println("/>");
			return;
		}

		// children, so close current tag
		System.out.println(">");
		while (child != null) {
			// print children recursively
			displayMetadata(child, level + 1);
			child = child.getNextSibling();
		}

		// print close tag of element
		indent(level);
		System.out.println("");
	}

}