/*
* Created on Jun 25, 2009
*
* 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.
*
* Copyright @2009-2013 the original author or authors.
*/
package org.fest.swing.util;
import static org.fest.util.Preconditions.checkNotNull;
import java.util.regex.Pattern;
import javax.annotation.Nonnull;
import org.fest.util.Arrays;
/**
* Utility methods for regular expression patterns.
*
* @author Alex Ruiz
*/
public final class Patterns {
/**
* <p>
* Formats the given array of regular expression patterns.
* </p>
*
* <p>
* For example, the array
*
* <pre>
* Pattern[] patterns = { Pattern.compile("hello"), Pattern.compile("world") };
* </pre>
*
* will be formatted as
*
* <pre>
* ['hello', 'world']
* </pre>
*
* </p>
*
* @param patterns the array of patterns to format.
* @return the {@code String} containing the formatted array.
* @throws NullPointerException if the given array of patterns is {@code null}.
* @throws NullPointerException if any of the patterns in the given array is {@code null}.
*/
public static @Nonnull String format(@Nonnull Pattern[] patterns) {
checkNotNull(patterns);
int patternCount = patterns.length;
String[] patternsAsText = new String[patternCount];
for (int i = 0; i < patternCount; i++) {
Pattern p = checkNotNull(patterns[i]);
patternsAsText[i] = p.pattern();
}
return checkNotNull(Arrays.format(patternsAsText));
}
private Patterns() {}
}