hadoop FileSetUtils 源码
haddop FileSetUtils 代码
文件路径：/hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/util/FileSetUtils.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.hadoop.maven.plugin.util;
import org.apache.maven.model.FileSet;
import org.codehaus.plexus.util.FileUtils;
import java.io.File;
import java.io.IOException;
import java.util.List;
/**
* FileSetUtils contains helper methods for mojo implementations that need to
* work with a Maven FileSet.
*/
public class FileSetUtils {
/**
* Returns a string containing every element of the given list, with each
* element separated by a comma.
*
* @param list List of all elements
* @return String containing every element, comma-separated
*/
private static String getCommaSeparatedList(List<String> list) {
StringBuilder buffer = new StringBuilder();
String separator = "";
for (Object e : list) {
buffer.append(separator).append(e);
separator = ",";
}
return buffer.toString();
}
/**
* Converts a Maven FileSet to a list of File objects.
*
* @param source FileSet to convert
* @return List containing every element of the FileSet as a File
* @throws IOException if an I/O error occurs while trying to find the files
*/
@SuppressWarnings("unchecked")
public static List<File> convertFileSetToFiles(FileSet source) throws IOException {
String includes = getCommaSeparatedList(source.getIncludes());
String excludes = getCommaSeparatedList(source.getExcludes());
return FileUtils.getFiles(new File(source.getDirectory()), includes, excludes);
}
}
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