Copyright (c) 2000, 2012 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2012 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.launching;

import java.util.ArrayList;

Utility class for id's made of multiple Strings
/**
 * Utility class for id's made of multiple Strings
 */
public class CompositeId {
	private String[] fParts;

	public CompositeId(String[] parts) {
		fParts= parts;
	}

	public static CompositeId fromString(String idString) {
		ArrayList<String> parts= new ArrayList<>();
		int commaIndex= idString.indexOf(',');
		while (commaIndex > 0) {
			int length= Integer.valueOf(idString.substring(0, commaIndex)).intValue();
			String part= idString.substring(commaIndex+1, commaIndex+1+length);
			parts.add(part);
			idString= idString.substring(commaIndex+1+length);
			commaIndex= idString.indexOf(',');
		}
		String[] result= parts.toArray(new String[parts.size()]);
		return new CompositeId(result);
	}

	@Override
	public String toString() {
		StringBuilder buf= new StringBuilder();
		for (int i= 0; i < fParts.length; i++) {
			buf.append(fParts[i].length());
			buf.append(',');
			buf.append(fParts[i]);
		}
		return buf.toString();
	}

	public String get(int index) {
		return fParts[index];
	}

	public int getPartCount() {
		return fParts.length;
	}
}