/*
* Copyright 2016 higherfrequencytrading.com
*
* 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 net.openhft.lang.io;
import net.openhft.lang.model.constraints.NotNull;
import net.openhft.lang.model.constraints.Nullable;
import org.slf4j.LoggerFactory;
import sun.misc.Cleaner;
import sun.nio.ch.DirectBuffer;
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
/**
* @author peter.lawrey
*/
public enum IOTools {
;
public static final Charset ISO_8859_1 = Charset.forName("ISO-8859-1");
public static final Charset UTF_8 = Charset.forName("UTF-8");
public static void close(@Nullable Closeable closeable) {
if (closeable == null) return;
try {
closeable.close();
} catch (IOException ignored) {
}
}
public static void close(@NotNull Iterable<? extends Closeable> closeables) {
for (Closeable closeable : closeables) {
close(closeable);
}
}
public static int stopBitLength(long l) {
if (l < 0) return stopBitLength(~l) + 1;
int count = 1;
while (l >= 128) {
l >>>= 7;
count++;
}
return count;
}
public static void deleteDir(String dirPath) {
deleteDir(new File(dirPath));
}
private static void deleteDir(File dir) {
// delete one level.
if (dir.isDirectory()) {
File[] files = dir.listFiles();
if (files != null)
for (File file : files)
if (file.isDirectory()) {
deleteDir(file);
} else if (!file.delete()) {
LoggerFactory.getLogger(IOTools.class).info("... unable to delete {}", file);
}
}
dir.delete();
}
public static void clean(ByteBuffer bb) {
if (bb instanceof DirectBuffer) {
Cleaner cl = ((DirectBuffer) bb).cleaner();
if (cl != null)
cl.clean();
}
}
}