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/*******************************************************************************
* Copyright (c) 2003, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - Initial API and implementation
*******************************************************************************/
package org.eclipse.jst.server.tomcat.core.internal;
import java.io.*;
import java.net.URL;
import org.eclipse.core.runtime.*;
import org.eclipse.jst.server.core.PublishUtil;
import org.eclipse.osgi.util.NLS;
/**
* Utility class with an assortment of useful file methods.
*/
public class FileUtil {
// size of the buffer
private static final int BUFFER = 10240;
// the buffer
private static byte[] buf = new byte[BUFFER];
/**
* FileUtil cannot be created. Use static methods.
*/
private FileUtil() {
super();
}
/**
* Copys a directory from a to b.
*
* @param from java.lang.String
* @param to java.lang.String
* @param monitor a progress monitor, or <code>null</code>
*/
public static void copyDirectory(String from, String to, IProgressMonitor monitor) {
try {
File fromDir = new File(from);
File toDir = new File(to);
File[] files = fromDir.listFiles();
toDir.mkdir();
// cycle through files
int size = files.length;
monitor = ProgressUtil.getMonitorFor(monitor);
monitor.beginTask(NLS.bind(Messages.copyingTask, new String[] {from, to}), size * 50);
for (int i = 0; i < size; i++) {
File current = files[i];
String fromFile = current.getAbsolutePath();
String toFile = to;
if (!toFile.endsWith(File.separator))
toFile += File.separator;
toFile += current.getName();
if (current.isFile()) {
copyFile(fromFile, toFile);
monitor.worked(50);
} else if (current.isDirectory()) {
monitor.subTask(NLS.bind(Messages.copyingTask, new String[] {fromFile, toFile}));
copyDirectory(fromFile, toFile, ProgressUtil.getSubMonitorFor(monitor, 50));
}
if (monitor.isCanceled())
return;
}
monitor.done();
} catch (Exception e) {
Trace.trace(Trace.SEVERE, "Error copying directory", e);
}
}
/**
* Copy a file from a to b. Closes the input stream after use.
*
* @param in java.io.InputStream
* @param to java.lang.String
* @return a status
*/
public static IStatus copyFile(InputStream in, String to) {
OutputStream out = null;
try {
out = new FileOutputStream(to);
int avail = in.read(buf);
while (avail > 0) {
out.write(buf, 0, avail);
avail = in.read(buf);
}
return Status.OK_STATUS;
} catch (Exception e) {
Trace.trace(Trace.SEVERE, "Error copying file", e);
return new Status(IStatus.ERROR, TomcatPlugin.PLUGIN_ID, 0, NLS.bind(Messages.errorCopyingFile, new String[] {to, e.getLocalizedMessage()}), e);
} finally {
try {
if (in != null)
in.close();
} catch (Exception ex) {
// ignore
}
try {
if (out != null)
out.close();
} catch (Exception ex) {
// ignore
}
}
}
/**
* Copy a file from a to b.
*
* @param from java.lang.String
* @param to java.lang.String
* @return a status
*/
public static IStatus copyFile(String from, String to) {
try {
return copyFile(new FileInputStream(from), to);
} catch (Exception e) {
Trace.trace(Trace.SEVERE, "Error copying file", e);
return new Status(IStatus.ERROR, TomcatPlugin.PLUGIN_ID, 0, NLS.bind(Messages.errorCopyingFile, new String[] {to, e.getLocalizedMessage()}), e);
}
}
/**
* Copy a file from a to b.
*
* @param from java.net.URL
* @param to java.lang.String
* @return a status
*/
public static IStatus copyFile(URL from, String to) {
try {
return copyFile(from.openStream(), to);
} catch (Exception e) {
Trace.trace(Trace.SEVERE, "Error copying file", e);
return new Status(IStatus.ERROR, TomcatPlugin.PLUGIN_ID, 0, NLS.bind(Messages.errorCopyingFile, new String[] {to, e.getLocalizedMessage()}), e);
}
}
/**
* Copys a directory from a to b, only modifying as needed
* and deleting old files and directories.
*
* @param from a directory
* @param to a directory
* @param monitor a progress monitor
*/
public static void smartCopyDirectory(String from, String to, IProgressMonitor monitor) {
try {
File fromDir = new File(from);
File toDir = new File(to);
File[] fromFiles = fromDir.listFiles();
int fromSize = fromFiles.length;
monitor = ProgressUtil.getMonitorFor(monitor);
monitor.beginTask(NLS.bind(Messages.copyingTask, new String[] {from, to}), 550);
File[] toFiles = null;
// delete old files and directories from this directory
if (toDir.exists() && toDir.isDirectory()) {
toFiles = toDir.listFiles();
int toSize = toFiles.length;
// check if this exact file exists in the new directory
for (int i = 0; i < toSize; i++) {
String name = toFiles[i].getName();
boolean isDir = toFiles[i].isDirectory();
boolean found = false;
for (int j = 0; j < fromSize; j++) {
if (name.equals(fromFiles[j].getName()) && isDir == fromFiles[j].isDirectory())
found = true;
}
// delete file if it can't be found or isn't the correct type
if (!found) {
if (isDir)
PublishUtil.deleteDirectory(toFiles[i], null);
else
toFiles[i].delete();
}
if (monitor.isCanceled())
return;
}
} else {
if (toDir.isFile())
toDir.delete();
toDir.mkdir();
}
monitor.worked(50);
// cycle through files and only copy when it doesn't exist
// or is newer
toFiles = toDir.listFiles();
int toSize = toFiles.length;
int dw = 0;
if (toSize > 0)
dw = 500 / toSize;
for (int i = 0; i < fromSize; i++) {
File current = fromFiles[i];
// check if this is a new or newer file
boolean copy = true;
if (!current.isDirectory()) {
String name = current.getName();
long mod = current.lastModified();
for (int j = 0; j < toSize; j++) {
if (name.equals(toFiles[j].getName()) && mod <= toFiles[j].lastModified())
copy = false;
}
}
if (copy) {
String fromFile = current.getAbsolutePath();
String toFile = to;
if (!toFile.endsWith(File.separator))
toFile += File.separator;
toFile += current.getName();
if (current.isFile()) {
copyFile(fromFile, toFile);
monitor.worked(dw);
} else if (current.isDirectory()) {
monitor.subTask(NLS.bind(Messages.copyingTask, new String[] {fromFile, toFile}));
smartCopyDirectory(fromFile, toFile, ProgressUtil.getSubMonitorFor(monitor, dw));
}
}
if (monitor.isCanceled())
return;
}
monitor.worked(500 - dw * toSize);
monitor.done();
} catch (Exception e) {
Trace.trace(Trace.SEVERE, "Error smart copying directory " + from + " - " + to, e);
}
}
}
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