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/*
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.xwiki.velocity.tools.nio;
import java.io.BufferedReader;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.nio.file.attribute.FileTime;
import java.util.List;
import java.util.Map;
/**
* Provides access to some of the static NIO2 Files methods.
*
* @version $Id: aa10ac341242c55ae56e0536210639fa47fe823a $
* @since 7.4M2
*/
public class NIOTool
{
/**
* See {@link Files#newDirectoryStream(Path)}.
*
* Velocity Example:
*
{@code
* #set ($dirStream = $niotool.newDirectoryStream("attach:[email protected]/"))
* #foreach ($entry in $dirStream)
* * {{{$entry}}}
* #end
* }
*
* @param dir See {@link Files#newDirectoryStream(Path)}
* @return See {@link Files#newDirectoryStream(Path)}
*/
public DirectoryStream newDirectoryStream(Path dir)
{
try {
return new WrappingDirectoryStream(Files.newDirectoryStream(dir));
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#newDirectoryStream(Path, DirectoryStream.Filter)}.
*
* @param dir See {@link Files#newDirectoryStream(Path, DirectoryStream.Filter)}
* @param filter See {@link Files#newDirectoryStream(Path, DirectoryStream.Filter)}
* @return See {@link Files#newDirectoryStream(Path, DirectoryStream.Filter)}
*/
public DirectoryStream newDirectoryStream(Path dir, DirectoryStream.Filter filter)
{
try {
return new WrappingDirectoryStream(Files.newDirectoryStream(dir, filter));
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#newDirectoryStream(Path, String)}.
*
* @param dir See {@link Files#newDirectoryStream(Path, String)}
* @param glob See {@link Files#newDirectoryStream(Path, String)}
* @return See {@link Files#newDirectoryStream(Path, String)}
*/
public DirectoryStream newDirectoryStream(Path dir, String glob)
{
try {
return new WrappingDirectoryStream(Files.newDirectoryStream(dir, glob));
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#isDirectory(Path, LinkOption...)}.
*
* @param path See {@link Files#isDirectory(Path, LinkOption...)}
* @param options See {@link Files#isDirectory(Path, LinkOption...)}
* @return See {@link Files#isDirectory(Path, LinkOption...)}
*/
public boolean isDirectory(Path path, LinkOption... options)
{
return Files.isDirectory(path, options);
}
/**
* See {@link Files#isRegularFile(Path, LinkOption...)}.
*
* @param path See {@link Files#isRegularFile(Path, LinkOption...)}
* @param options See {@link Files#isRegularFile(Path, LinkOption...)}
* @return See {@link Files#isRegularFile(Path, LinkOption...)}
*/
public boolean isRegularFile(Path path, LinkOption... options)
{
return Files.isRegularFile(path, options);
}
/**
* See {@link Files#isReadable(Path)}.
*
* @param path See {@link Files#isReadable(Path)}
* @return See {@link Files#isReadable(Path)}
*/
public boolean isReadable(Path path)
{
return Files.isReadable(path);
}
/**
* See {@link Files#isSymbolicLink(Path)}.
*
* @param path See {@link Files#isSymbolicLink(Path)}
* @return See {@link Files#isSymbolicLink(Path)}
*/
public boolean isSymbolicLink(Path path)
{
return Files.isSymbolicLink(path);
}
/**
* See {@link Files#exists(Path, LinkOption...)}.
*
* @param path See {@link Files#exists(Path, LinkOption...)}
* @param options See {@link Files#exists(Path, LinkOption...)}
* @return See {@link Files#exists(Path, LinkOption...)}
*/
public boolean exists(Path path, LinkOption... options)
{
return Files.exists(path, options);
}
/**
* See {@link Files#readAllBytes(Path)}.
*
* Velocity Example:
*
{@code
* $stringtool.toString($niotool.readAllBytes("attach:[email protected]/vma.txt"), "utf-8")
* }
*
* @param path See {@link Files#readAllBytes(Path)}
* @return See {@link Files#readAllBytes(Path)}
*/
public byte[] readAllBytes(Path path)
{
try {
return Files.readAllBytes(path);
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#readAllLines(Path, Charset)}.
*
* @param path See {@link Files#readAllLines(Path, Charset)}
* @param cs See {@link Files#readAllLines(Path, Charset)}
* @return See {@link Files#readAllLines(Path, Charset)}
*/
public List readAllLines(Path path, Charset cs)
{
try {
return Files.readAllLines(path, cs);
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#newBufferedReader(Path, Charset)}.
*
* @param path See {@link Files#newBufferedReader(Path, Charset)}
* @param cs See {@link Files#newBufferedReader(Path, Charset)}
* @return See {@link Files#newBufferedReader(Path, Charset)}
*/
public BufferedReader newBufferedReader(Path path, Charset cs)
{
try {
return Files.newBufferedReader(path, cs);
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#size(Path)}.
*
* @param path See {@link Files#size(Path)}
* @return See {@link Files#size(Path)}
*/
public long size(Path path)
{
try {
return Files.size(path);
} catch (IOException e) {
return 0L;
}
}
/**
* See {@link Files#getAttribute(Path, String, LinkOption...)}.
*
* @param path See {@link Files#getAttribute(Path, String, LinkOption...)}
* @param attribute See {@link Files#getAttribute(Path, String, LinkOption...)}
* @param options See {@link Files#getAttribute(Path, String, LinkOption...)}
* @return See {@link Files#getAttribute(Path, String, LinkOption...)}
*/
public Object getAttribute(Path path, String attribute, LinkOption... options)
{
try {
return Files.getAttribute(path, attribute, options);
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#readAttributes(Path, String, LinkOption...)}.
*
* @param path See {@link Files#readAttributes(Path, String, LinkOption...)}
* @param attributes See {@link Files#readAttributes(Path, String, LinkOption...)}
* @param options See {@link Files#readAttributes(Path, String, LinkOption...)}
* @return See {@link Files#readAttributes(Path, String, LinkOption...)}
*/
public Map readAttributes(Path path, String attributes, LinkOption... options)
{
try {
return Files.readAttributes(path, attributes, options);
} catch (IOException e) {
return null;
}
}
/**
* See {@link Files#getLastModifiedTime(Path, LinkOption...)}.
*
* @param path See {@link Files#getLastModifiedTime(Path, LinkOption...)}
* @param options See {@link Files#getLastModifiedTime(Path, LinkOption...)}
* @return See {@link Files#getLastModifiedTime(Path, LinkOption...)}
*/
public FileTime getLastModifiedTime(Path path, LinkOption... options)
{
try {
return Files.getLastModifiedTime(path, options);
} catch (IOException e) {
return null;
}
}
}