/*******************************************************************************
 * Copyright (c) 2000, 2010 QNX Software Systems and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     QNX Software Systems - Initial API and implementation
 *     Marc-Andre Laperle - use -thread-list-ids for mac, fix for bug 294538
 *******************************************************************************/
package org.eclipse.cdt.debug.mi.core.command.factories.macos;

import java.util.Arrays;

import org.eclipse.cdt.debug.mi.core.output.CLIInfoThreadsInfo;
import org.eclipse.cdt.debug.mi.core.output.MIConst;
import org.eclipse.cdt.debug.mi.core.output.MIOutput;
import org.eclipse.cdt.debug.mi.core.output.MIResult;
import org.eclipse.cdt.debug.mi.core.output.MIResultRecord;
import org.eclipse.cdt.debug.mi.core.output.MITuple;
import org.eclipse.cdt.debug.mi.core.output.MIValue;

/**
 * This class actually parses -thread-list-ids and converts it to the
 * CLIInfoThreadsInfo 'format'
 */
class MacOsCLIInfoThreadsInfo extends CLIInfoThreadsInfo {

	public MacOsCLIInfoThreadsInfo(MIOutput out) {
		super(out);
	}

	protected void parse() {
		if (isDone()) {
			MIOutput out = getMIOutput();
			MIResultRecord rr = out.getMIResultRecord();
			if (rr != null) {
				MIResult[] results = rr.getMIResults();
				for (int i = 0; i < results.length; i++) {
					String var = results[i].getVariable();
					if (var.equals("thread-ids")) { //$NON-NLS-1$
						MIValue val = results[i].getMIValue();
						if (val instanceof MITuple) {
							parseThreadIds((MITuple) val);
						}
					}
				}
			}
		}
		if (threadIds == null) {
			threadIds = new int[0];
		}
		Arrays.sort(threadIds);
		if (threadIds.length > 0) {
			currentThreadId = threadIds[0];
		}
	}

	void parseThreadIds(MITuple tuple) {
		MIResult[] results = tuple.getMIResults();
		threadIds = new int[results.length];
		for (int i = 0; i < results.length; i++) {
			String var = results[i].getVariable();
			if (var.equals("thread-id")) { //$NON-NLS-1$
				MIValue value = results[i].getMIValue();
				if (value instanceof MIConst) {
					String str = ((MIConst) value).getCString();
					try {
						threadIds[i] = Integer.parseInt(str.trim());
					} catch (NumberFormatException e) {
					}
				}
			}
		}
	}
}