org.jooq.FileComparator Maven / Gradle / Ivy
/*
* 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.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* Apache-2.0 license and offer limited warranties, support, maintenance, and
* commercial database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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*/
package org.jooq;
import java.io.File;
import java.util.Comparator;
/**
* A comparator that compares file names semantically, just like the Windows
* Explorer.
*
* Desired semantic ordering:
*
*
* version-1
* version-2
* version-10
*
*
* Undesired, lexicographic ordering:
*
*
* version-1
* version-10
* version-2
*
*
* @author Lukas Eder
*/
final class FileComparator implements Comparator {
public static final FileComparator INSTANCE = new FileComparator();
@Override
public final int compare(File o1, File o2) {
String s1 = o1 == null ? null : o1.getName();
String s2 = o2 == null ? null : o2.getName();
return FilenameComparator.INSTANCE.compare(s1, s2);
}
}