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package act.util;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* 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.
* #L%
*/
import act.app.ProjectLayout;
import org.osgl.$;
import org.osgl.util.C;
import org.osgl.util.ListBuilder;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* A collection of file IO utilities
*/
public enum Files {
;
public static File file(File parent, String path) {
return ProjectLayout.Utils.file(parent, path);
}
public static List<File> filter(File baseDir, $.F1<String, Boolean> filter) {
ListBuilder<File> list = ListBuilder.create(500);
filter(baseDir, filter, C.F.addTo(list));
return list.toList();
}
public static void filter(File baseDir, $.F1<String, Boolean> filter, $.F1<File, ?> visitor) {
File[] files = baseDir.listFiles();
if (null == files) {
return;
}
int n = files.length;
for (int i = 0; i < n; ++i) {
File file = files[i];
if (isValidDir(file)) {
filter(file, filter, visitor);
} else if (null == filter || filter.apply(file.getName())) {
visitor.apply(file);
}
}
}
public static List<File> filter(List<File> baseDirs, $.F1<String, Boolean> filter) {
ListBuilder<File> list = ListBuilder.create(500);
filter(baseDirs, filter, C.F.addTo(list));
return list.toList();
}
public static void filter(List<File> baseDirs, $.F1<String, Boolean> filter, $.F1<File, ?> visitor) {
List<File> files = new ArrayList<>();
for (File baseDir : baseDirs) {
files.addAll(C.listOf(baseDir.listFiles()));
}
for (File file: files) {
if (isValidDir(file)) {
filter(file, filter, visitor);
} else {
visitor.apply(file);
}
}
}
private static boolean isValidDir(File file) {
return file.isDirectory() && !isHiddenDir(file);
}
private static boolean isHiddenDir(File file) {
return file.getName().startsWith(".");
}
}