PSystemDotFactory.java

/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 * 
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 * This file is part of PlantUML.
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 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
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 *
 * 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 General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
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 * Original Author:  Arnaud Roques
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 */
package net.sourceforge.plantuml.directdot;

import net.sourceforge.plantuml.command.PSystemBasicFactory;
import net.sourceforge.plantuml.core.DiagramType;
import net.sourceforge.plantuml.core.UmlSource;
import net.sourceforge.plantuml.preproc.PreprocessingArtifact;
import net.sourceforge.plantuml.skin.UmlDiagramType;

public class PSystemDotFactory extends PSystemBasicFactory<PSystemDot> {

	private StringBuilder data;

	public PSystemDotFactory(DiagramType diagramType) {
		super(diagramType);
	}

	@Override
	public PSystemDot initDiagram(UmlSource source, String startLine, PreprocessingArtifact preprocessing) {
		data = null;
		return null;
	}

	@Override
	public PSystemDot executeLine(UmlSource source, PSystemDot system, String line, PreprocessingArtifact preprocessing) {
		if (system == null && line.matches("(strict\\s+)?(di)?graph\\s+\"?[-\\w]+\"?\\s*\\{")) {
			data = new StringBuilder(line);
			data.append("\n");
			return new PSystemDot(source, data.toString(), preprocessing);
		}
		if (data == null || system == null)
			return null;

		data.append(line);
		data.append("\n");
		return new PSystemDot(source, data.toString(), preprocessing);
	}
	
	@Override
	public UmlDiagramType getUmlDiagramType() {
		return null;
	}

}