/*******************************************************************************
 * Copyright (c) 2010, 2015 Ericsson 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:
 *     Ericsson - Initial API and implementation
 *******************************************************************************/

package org.eclipse.cdt.dsf.mi.service.command.output;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * [Current thread is 1 (Thread 0xb7cc56b0 (LWP 5488))]
 *
 * @since 3.0
 */
public class CLIThreadInfo extends MIInfo {

	private String fCurrentThread;

	public CLIThreadInfo(MIOutput out) {
		super(out);
		parse();
	}

	/**
	 * @since 5.0
	 */
	public String getCurrentThread() {
		return fCurrentThread;
	}

	protected void parse() {
		if (isDone()) {
			MIOutput out = getMIOutput();
			MIOOBRecord[] oobs = out.getMIOOBRecords();
			for (int i = 0; i < oobs.length; i++) {
				if (oobs[i] instanceof MIConsoleStreamOutput) {
					MIStreamRecord cons = (MIStreamRecord) oobs[i];
					String str = cons.getString();
					// We are interested in finding the current thread
					parseThreadInfo(str.trim());
				}
			}
		}
	}

	protected void parseThreadInfo(String str) {
		// Fetch the OS ThreadId & Find the current thread
		if (!str.isEmpty()) {
			Pattern pattern = Pattern.compile("Current thread is (\\d+)", Pattern.MULTILINE); //$NON-NLS-1$
			Matcher matcher = pattern.matcher(str);
			if (matcher.find()) {
				String id = matcher.group(1).trim();
				fCurrentThread = id;
			}
		}
	}
}