Validate.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat Middleware LLC, and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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 org.jboss.arquillian.drone.webdriver.factory.remote.reusable;

import java.io.File;

/**
 *
 */
class Validate {

    static boolean empty(Object object) {
        return object == null;
    }

    static boolean empty(String object) {
        return object == null || object.length() == 0;
    }

    static boolean nonEmpty(String object) {
        return !empty(object);
    }

    static void isEmpty(String object, String message) throws IllegalArgumentException {
        if (empty(object)) {
            throw new IllegalArgumentException(message);
        }
    }

    static boolean readable(String path) throws IllegalArgumentException {
        if (empty(path)) {
            return false;
        }
        return readable(new File(path));
    }

    static boolean readable(File file) throws IllegalArgumentException {
        if (empty(file)) {
            return false;
        }

        if (!file.exists() || !file.canRead()) {
            return false;
        }

        return true;
    }

    static boolean writeable(String path) throws IllegalArgumentException {
        if (empty(path)) {
            return false;
        }

        return writeable(new File(path));
    }

    static boolean writeable(File file) throws IllegalArgumentException {
        if (empty(file)) {
            return false;
        }

        if (file.exists() && !file.canWrite()) {
            return false;
        }

        return true;
    }
}