Capsule/Caplet for multi-platform SWT

SWTLoader.java

import static com.google.common.base.Preconditions.checkState;

import java.nio.file.Path;
import java.util.Iterator;
import java.util.List;

public final class SWTLoader extends Capsule {

	// ~ Constructors ----------------------------------------------------------------------------------------------

	protected SWTLoader(final Capsule pred) {
		super(pred);
	}

	// ~ Methods ---------------------------------------------------------------------------------------------------

	@Override
	protected List<Path> buildClassPath() {
		List<Path> path = super.buildClassPath();

		String dataModel = System.getProperty("sun.arch.data.model");
		log(LOG_DEBUG, "sun.arch.data.model: '" + dataModel + "'");

		boolean bit64 = false;
		if (dataModel.equals("32")) {
			bit64 = false;
		} else if (dataModel.equals("64")) {
			bit64 = true;
		} else {
			checkState(false, "unknown data-model: '%s'", dataModel);
		}


		Iterator<Path> myIt = path.iterator();
		while (myIt.hasNext()) {
			Path p = myIt.next();
			if (p.toString()
				.contains("org.eclipse.swt.win32.win32.x86_64-")) {
				if (!isWindows() || !bit64) {
					log(LOG_DEBUG, "removed " + p);
					myIt.remove();
				}
			}
			if (p.toString()
				.contains("org.eclipse.swt.win32.win32.x86-")) {
				if (!isWindows() || bit64) {
					log(LOG_DEBUG, "removed " + p);
					myIt.remove();
				}
			}
			if (p.toString()
				.contains("org.eclipse.swt.cocoa.macosx.x86_64-")) {
				if (!isMac()) {
					log(LOG_DEBUG, "removed " + p);
					myIt.remove();
				}
			}
		}

		return path;
	}

	@Override
	protected List<String> buildJVMArgs() {
		List<String> args = super.buildJVMArgs();
		if (isMac()) {
			args.add("-XstartOnFirstThread");
		}

		return args;
	}
}