org.agiso.core.lang.util.StringUtils.java Source code

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Here is the source code for org.agiso.core.lang.util.StringUtils.java

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/* org.agiso.core.lang.util.StringUtils (2009-10-16)
 * 
 * StringUtils.java
 * 
 * Copyright 2009 agiso.org.
 * 
 * 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.agiso.core.lang.util;

/**
 * Roszerzenie klasy narzdziowej {@link org.apache.commons.lang.StringUtils}.
 * 
 * @author Karol Kopacz
 * @since 1.0
 */
public abstract class StringUtils extends org.apache.commons.lang.StringUtils {
    public static final String nullIfEmpty(String string) {
        return isEmpty(string) ? null : string;
    }

    public static final String nullIfBlank(String string) {
        return isBlank(string) ? null : string;
    }

    public static final String emptyIfNull(String string) {
        return string == null ? "" : string;
    }

    public static final String emptyIfNull(Object object) {
        return object == null ? "" : object.toString();
    }

    public static final String emptyIfBlank(String string) {
        return isBlank(string) ? "" : string;
    }

    public static String addPending(String s, char c, int length) {
        if (length <= s.length()) {
            return s;
        }

        StringBuilder b = new StringBuilder(length);
        for (int index = s.length(); index < length; index++) {
            b.append(c);
        }
        b.append(s);

        return b.toString();
    }

    public static String limit(String s, int length) {
        if (s != null && s.length() > length) {
            return s.substring(0, length);
        }
        return s;
    }
}