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/**
* Arara, the cool TeX automation tool
* Copyright (c) 2012 -- 2019, Paulo Roberto Massa Cereda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the project's author nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.github.cereda.arara.utils;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.filefilter.FalseFileFilter;
import org.apache.commons.io.filefilter.TrueFileFilter;
import org.apache.commons.io.filefilter.WildcardFileFilter;
/**
* Implements file searching utilitary methods.
* @author Paulo Roberto Massa Cereda
* @version 4.0
* @since 4.0
*/
public class FileSearchingUtils {
/**
* List all files from the provided directory according to the list of
* extensions. The leading dot must be omitted, unless it is part of the
* extension.
* @param directory The provided directory.
* @param extensions The list of extensions.
* @param recursive A flag indicating whether the search is recursive.
* @return A list of files.
*/
public static List<File> listFilesByExtensions(File directory,
List<String> extensions, boolean recursive) {
try {
// convert the provided extension
// list to an extension array
String[] array = new String[extensions.size()];
array = extensions.toArray(array);
// return the result of the
// provided search
return new ArrayList<File>(
FileUtils.listFiles(directory, array, recursive)
);
} catch (Exception nothandled) {
// if something bad happens,
// gracefully fallback to
// an empty file list
return new ArrayList<File>();
}
}
/**
* List all files from the provided directory matching the list of file
* name patterns. Such list can contain wildcards.
* @param directory The provided directory.
* @param patterns The list of file name patterns.
* @param recursive A flag indicating whether the search is recursive.
* @return A list of files.
*/
public static List<File> listFilesByPatterns(File directory,
List<String> patterns, boolean recursive) {
try {
// return the result of the provided
// search, with the wildcard filter
// and a potential recursive search
return new ArrayList<File>(
FileUtils.listFiles(
directory,
new WildcardFileFilter(patterns),
recursive
? TrueFileFilter.INSTANCE
: FalseFileFilter.INSTANCE
)
);
} catch (Exception nothandled) {
// if something bad happens,
// gracefully fallback to
// an empty file list
return new ArrayList<File>();
}
}
}
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