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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!)
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 *
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the Eclipse Public License.
 *
 * THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
 * LICENSE ("AGREEMENT"). [Eclipse Public License - v 1.0]
 *
 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES
 * RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
 *
 * You may obtain a copy of the License at
 *
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * 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 EPL license.
 *
 * The generated images can then be used without any reference to the EPL 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 com.plantuml.api.cheerpj;

import net.sourceforge.plantuml.ErrorUml;
import net.sourceforge.plantuml.core.Diagram;
import net.sourceforge.plantuml.core.ImageData;
import net.sourceforge.plantuml.error.PSystemError;

//::revert when __CORE__
//import com.leaningtech.client.Global;

public class JsonResult {

	private final StringBuilder sb = new StringBuilder();

	private JsonResult(long startingTime) {
		sb.append("{");
		this.append("duration", System.currentTimeMillis() - startingTime);
	}

	private Object done() {
		sb.append("}");
		// ::revert when __CORE__
		return sb.toString();
		// return Global.JSString(sb.toString());
	}

	public static Object noDataFound(long startingTime) {
		final JsonResult res = new JsonResult(startingTime);
		res.append("status", "No data found");
		return res.done();
	}

	public static Object fromCrash(long startingTime, Throwable t) {
		final JsonResult res = new JsonResult(startingTime);
		res.append("status", "General failure");
		res.append("exception", t.toString());
		return res.done();
	}

	public static Object ok(long startingTime, ImageData imageData, Diagram diagram) {
		final JsonResult res = new JsonResult(startingTime);
		res.append("status", "ok");
		if (imageData != null) {
			res.append("width", imageData.getWidth());
			res.append("height", imageData.getHeight());
		}
		res.append("description", diagram.getDescription().getDescription());
		return res.done();
	}

	public static Object fromError(long startingTime, PSystemError system) {
		final JsonResult res = new JsonResult(startingTime);
		res.append("status", "Parsing error");

		final ErrorUml err = system.getErrorsUml().iterator().next();
		res.append("line", err.getPosition());
		res.append("error", err.getError());

		return res.done();
	}

	private void append(String key, String value) {
		appendKeyOnly(key);
		sb.append('\"');
		sb.append(value);
		sb.append('\"');
	}

	private void append(String key, long value) {
		appendKeyOnly(key);
		sb.append(value);
	}

	protected void appendKeyOnly(String key) {
		if (sb.length() > 1)
			sb.append(',');
		sb.append('\"');
		sb.append(key);
		sb.append('\"');
		sb.append(':');
	}

}