nl.socrates.dom.utils.StringUtils.java Source code

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Here is the source code for nl.socrates.dom.utils.StringUtils.java

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/*
 *
 *  Copyright 2014 YODO international projects and consultancy
 *
 *
 *  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 nl.socrates.dom.utils;

import com.google.common.base.Function;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterables;

public final class StringUtils {
    private StringUtils() {
    }

    private static Function<String, String> LOWER_CASE_THEN_CAPITALIZE = new Function<String, String>() {
        @Override
        public String apply(final String input) {
            return input != null ? StringUtils.capitalize(input.toLowerCase()) : null;
        }
    };

    private static Function<String, String> UPPER_CASE = new Function<String, String>() {
        @Override
        public String apply(final String input) {
            return input != null ? input.toUpperCase() : null;
        }
    };

    public static String enumTitle(final String string) {
        if (string == null) {
            return null;
        }
        return Joiner.on(" ").join(Iterables.transform(Splitter.on("_").split(string), LOWER_CASE_THEN_CAPITALIZE));
    }

    public static String enumDeTitle(final String string) {
        if (string == null) {
            return null;
        }
        return Joiner.on("_").join(Iterables.transform(Splitter.on(" ").split(string), UPPER_CASE));
    }

    public static String wildcardToCaseInsensitiveRegex(final String pattern) {
        if (pattern == null) {
            return null;
        }
        return "(?i)".concat(wildcardToRegex(pattern));
    }

    public static String wildcardToRegex(final String pattern) {
        if (pattern == null) {
            return null;
        }
        return pattern.replace("*", ".*").replace("?", ".");
    }

    public static String capitalize(final String str) {
        if (str == null || str.length() == 0) {
            return str;
        }
        if (str.length() == 1) {
            return str.toUpperCase();
        }
        return Character.toUpperCase(str.charAt(0)) + str.substring(1);
    }

}