import static org.apache.maven.cling.invoker.Utils.or;
import static org.apache.maven.cling.invoker.Utils.prefix;
import static org.apache.maven.cling.invoker.Utils.stripLeadingAndTrailingQuotes;
import static org.apache.maven.cling.invoker.Utils.toMap;

public abstract class BaseParser<O extends Options, R extends InvokerRequest<O>> implements Parser<R> {

    @SuppressWarnings("VisibilityModifier")

    @Nullable
    public static File toFile(Path path) {
        if (path != null) {
            return path.toFile();
        }
        return null;
    }

    @Nonnull
    public static String stripLeadingAndTrailingQuotes(String str) {
        requireNonNull(str, "str");
        final int length = str.length();
        if (length > 1
                && str.startsWith("\"")
                && str.endsWith("\"")

        for (String arg : cliRequest.args) {
            if (isAltFile) {
                // this is the argument following -f/--file
                Path path = topDirectory.resolve(stripLeadingAndTrailingQuotes(arg));
                if (Files.isDirectory(path)) {
                    topDirectory = path;
                } else if (Files.isRegularFile(path)) {
                    topDirectory = path.getParent();