cdi-extender/src/main/java/org/apache/aries/cdi/container/internal/util/Strings.java

/**
 * 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.apache.aries.cdi.container.internal.util;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Strings {

	public static final String[] EMPTY_ARRAY = new String[0];

	private Strings() {
		// no instances
	}

	public static String camelCase(String name) {
		name = name.replaceFirst("^(.)", Character.toLowerCase(name.charAt(0)) + "");
		Matcher m = PATTERN.matcher(name);
		StringBuffer sb2 = new StringBuffer();
		while (m.find()) {
			m.appendReplacement(sb2, "." + m.group(0).toLowerCase());
		}
		m.appendTail(sb2);
		return sb2.toString();
	}

	private static final Pattern PATTERN = Pattern.compile("(?<=[a-z])[A-Z]");

}