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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.
package com.plantuml.api.cheerpj.v1;

import static java.nio.charset.StandardCharsets.UTF_8;

import java.io.IOException;
import java.io.StringReader;
import java.util.Collections;
import java.util.List;

import com.plantuml.api.cheerpj.JsonResult;
import com.plantuml.api.cheerpj.Utils;
import com.plantuml.api.cheerpj.WasmLog;

import net.sourceforge.plantuml.BlockUml;
import net.sourceforge.plantuml.BlockUmlBuilder;
import net.sourceforge.plantuml.ErrorUml;
import net.sourceforge.plantuml.code.NoPlantumlCompressionException;
import net.sourceforge.plantuml.code.TranscoderUtil;
import net.sourceforge.plantuml.core.Diagram;
import net.sourceforge.plantuml.error.PSystemError;
import net.sourceforge.plantuml.preproc.Defines;

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

public class Info {

	public static Object decode(String text) {
		String result;
		try {
			result = TranscoderUtil.getDefaultTranscoder().decode(text);
		} catch (NoPlantumlCompressionException e) {
			e.printStackTrace();
			result = "";
		}
		// ::revert when __CORE__
		return result;
		// return Global.JSString(result);
	}

	public static Object encode(String text) {
		String result;
		try {
			result = TranscoderUtil.getDefaultTranscoder().encode(text);
		} catch (IOException e) {
			e.printStackTrace();
			result = "";
		}
		// ::revert when __CORE__
		return result;
		// return Global.JSString(result);
	}

	public static Object syntaxCheck(String text) {
		final long start = System.currentTimeMillis();
		WasmLog.start = start;
		WasmLog.log("Starting processing");

		try {
			text = Utils.cleanText(text);
			final BlockUmlBuilder builder = new BlockUmlBuilder(Collections.emptyList(), UTF_8,
					Defines.createEmpty(), new StringReader(text), null, "string");
			List blocks = builder.getBlockUmls();

			if (blocks.size() == 0)
				return JsonResult.noDataFound(start);

			final Diagram system = blocks.get(0).getDiagram();
			if (system instanceof PSystemError) {
				final ErrorUml error = ((PSystemError) system).getFirstError();
				WasmLog.log("[" + error.getPosition() + "] " + error.getError());
				return JsonResult.fromError(start, (PSystemError) system);
			}

			return JsonResult.ok(start, null, system);

		} catch (Throwable t) {
			WasmLog.log("Fatal error " + t);
			return JsonResult.fromCrash(start, t);
		}
	}

}