com.sshtools.util.IOUtil Maven / Gradle / Ivy
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/**
* Copyright 2003-2016 SSHTOOLS Limited. All Rights Reserved.
*
* For product documentation visit https://www.sshtools.com/
*
* This file is part of J2SSH Maverick.
*
* J2SSH Maverick is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* J2SSH Maverick is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with J2SSH Maverick. If not, see .
*/
package com.sshtools.util;
//import java.io.FileFilter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
*
*
* @author $author$
*/
public class IOUtil {
/**
* Default buffer size for stream utility methods
*/
public static int BUFFER_SIZE = 8192;
/**
* Copy from an input stream to an output stream. It is up to the caller to
* close the streams.
*
* @param in
* input stream
* @param out
* output stream
* @throws IOException
* on any error
*/
public static void copy(InputStream in, OutputStream out)
throws IOException {
copy(in, out, -1);
}
/**
* Copy the specified number of bytes from an input stream to an output
* stream. It is up to the caller to close the streams.
*
* @param in
* input stream
* @param out
* output stream
* @param count
* number of bytes to copy
* @throws IOException
* on any error
*/
public static void copy(InputStream in, OutputStream out, long count)
throws IOException {
copy(in, out, count, BUFFER_SIZE);
}
/**
* Copy the specified number of bytes from an input stream to an output
* stream. It is up to the caller to close the streams.
*
* @param in
* input stream
* @param out
* output stream
* @param count
* number of bytes to copy
* @param bufferSize
* buffer size
* @throws IOException
* on any error
*/
public static void copy(InputStream in, OutputStream out, long count,
int bufferSize) throws IOException {
byte buffer[] = new byte[bufferSize];
int i = bufferSize;
if (count >= 0) {
while (count > 0) {
if (count < bufferSize)
i = in.read(buffer, 0, (int) count);
else
i = in.read(buffer, 0, bufferSize);
if (i == -1)
break;
count -= i;
out.write(buffer, 0, i);
}
} else {
while (true) {
i = in.read(buffer, 0, bufferSize);
if (i < 0)
break;
out.write(buffer, 0, i);
}
}
}
/**
*
*
* @param in
*
* @return
*/
public static boolean closeStream(InputStream in) {
try {
if (in != null) {
in.close();
}
return true;
} catch (IOException ioe) {
return false;
}
}
/**
*
*
* @param out
*
* @return
*/
public static boolean closeStream(OutputStream out) {
try {
if (out != null) {
out.close();
}
return true;
} catch (IOException ioe) {
return false;
}
}
public static boolean delTree(File file) {
if (file.isFile()) {
return file.delete();
}
String[] list = file.list();
for (int i = 0; i < list.length; i++) {
if (!delTree(new File(file, list[i]))) {
return false;
}
}
return true;
}
public static void recurseDeleteDirectory(File dir) {
String[] files = dir.list();
if (files == null) {
return; // Directory could not be read
}
for (int i = 0; i < files.length; i++) {
File f = new File(dir, files[i]);
if (f.isDirectory()) {
recurseDeleteDirectory(f);
}
f.delete();
}
dir.delete();
}
public static void copyFile(File from, File to) throws IOException {
if (from.isDirectory()) {
if (!to.exists()) {
to.mkdir();
}
String[] children = from.list();
for (int i = 0; i < children.length; i++) {
File f = new File(from, children[i]);
if (f.getName().equals(".") || f.getName().equals("..")) {
continue;
}
if (f.isDirectory()) {
File f2 = new File(to, f.getName());
copyFile(f, f2);
} else {
copyFile(f, to);
}
}
} else if (from.isFile() && (to.isDirectory() || to.isFile())) {
if (to.isDirectory()) {
to = new File(to, from.getName());
}
FileInputStream in = new FileInputStream(from);
FileOutputStream out = new FileOutputStream(to);
byte[] buf = new byte[32678];
int read;
while ((read = in.read(buf)) > -1) {
out.write(buf, 0, read);
}
closeStream(in);
closeStream(out);
}
}
}