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Flowman common Java library

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/*
 * Copyright (C) 2023 The Flowman Authors
 *
 * 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.dimajix.common.text;

import lombok.val;


public final class StringUtils {
    private StringUtils() {
    }

    public static String truncate(String str, int maxLength)  {
        if (maxLength <= 3)
            throw new IllegalArgumentException("Cannot truncate to less than 4 characters");
        if (str == null) {
            return null;
        }
        else {
            val length = str.length();
            if (length > maxLength)
                return str.substring(0, maxLength - 3) + "...";
            else
                return str.substring(0, length);
        }
    }
}