DefineVariable.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
 * 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 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.preproc;

public class DefineVariable {

	private final String name;
	private final String defaultValue;

	public DefineVariable(String name) {
		name = name.trim();
		final int idx = name.indexOf('=');
		if (idx == -1) {
			this.name = name;
			this.defaultValue = null;
		} else {
			this.name = name.substring(0, idx).trim();
			final String right = name.substring(idx + 1).trim();
			this.defaultValue = right.substring(1, right.length() - 1);
		}
	}

	public String getName() {
		return name;
	}

	public String getDefaultValue() {
		return defaultValue;
	}

	public DefineVariable removeDefault() {
		if (defaultValue == null) {
			throw new IllegalStateException();
		}
		return new DefineVariable(name);
	}

}