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/**
 * Copyright 2015 Palantir Technologies, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.palantir.giraffe.file.base;

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

import java.nio.file.LinkOption;

/**
 * Utilities for working with {@link LinkOption}s.
 *
 * @author bkeyes
 */
public final class LinkOptions {

    public static boolean followLinks(LinkOption... options) {
        boolean followLinks = true;
        for (LinkOption option : options) {
            if (checkNotNull(option) == LinkOption.NOFOLLOW_LINKS) {
                followLinks = false;
            }
        }
        return followLinks;
    }

    private LinkOptions() {
        throw new UnsupportedOperationException();
    }

    public static LinkOption[] toArray(boolean followLinks) {
        if (followLinks) {
            return new LinkOption[0];
        } else {
            return new LinkOption[] { LinkOption.NOFOLLOW_LINKS };
        }
    }
}