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/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package org.apache.http.util;

import java.util.Collection;

public class Args {

    public static void check(final boolean expression, final String message) {
        if (!expression) {
            throw new IllegalArgumentException(message);
        }
    }

    public static void check(final boolean expression, final String message, final Object... args) {
        if (!expression) {
            throw new IllegalArgumentException(String.format(message, args));
        }
    }

    public static void check(final boolean expression, final String message, final Object arg) {
        if (!expression) {
            throw new IllegalArgumentException(String.format(message, arg));
        }
    }

    public static  T notNull(final T argument, final String name) {
        if (argument == null) {
            throw new IllegalArgumentException(name + " may not be null");
        }
        return argument;
    }

    public static  T notEmpty(final T argument, final String name) {
        if (argument == null) {
            throw new IllegalArgumentException(name + " may not be null");
        }
        if (TextUtils.isEmpty(argument)) {
            throw new IllegalArgumentException(name + " may not be empty");
        }
        return argument;
    }

    public static  T notBlank(final T argument, final String name) {
        if (argument == null) {
            throw new IllegalArgumentException(name + " may not be null");
        }
        if (TextUtils.isBlank(argument)) {
            throw new IllegalArgumentException(name + " may not be blank");
        }
        return argument;
    }

    public static  T containsNoBlanks(final T argument, final String name) {
        if (argument == null) {
            throw new IllegalArgumentException(name + " may not be null");
        }
        if (argument.length() == 0) {
            throw new IllegalArgumentException(name + " may not be empty");
        }
        if (TextUtils.containsBlanks(argument)) {
            throw new IllegalArgumentException(name + " may not contain blanks");
        }
        return argument;
    }

    public static > T notEmpty(final T argument, final String name) {
        if (argument == null) {
            throw new IllegalArgumentException(name + " may not be null");
        }
        if (argument.isEmpty()) {
            throw new IllegalArgumentException(name + " may not be empty");
        }
        return argument;
    }

    public static int positive(final int n, final String name) {
        if (n <= 0) {
            throw new IllegalArgumentException(name + " may not be negative or zero");
        }
        return n;
    }

    public static long positive(final long n, final String name) {
        if (n <= 0) {
            throw new IllegalArgumentException(name + " may not be negative or zero");
        }
        return n;
    }

    public static int notNegative(final int n, final String name) {
        if (n < 0) {
            throw new IllegalArgumentException(name + " may not be negative");
        }
        return n;
    }

    public static long notNegative(final long n, final String name) {
        if (n < 0) {
            throw new IllegalArgumentException(name + " may not be negative");
        }
        return n;
    }

}