/*
* File : Utilities.java
* Created : 24-Mar-2004
* By : parg
*
* Azureus - a Java Bittorrent client
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program 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 ( see the LICENSE file ).
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.gudy.azureus2.plugins.utils;
/**
* @author parg
*
*/
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.URL;
import java.nio.ByteBuffer;
import java.util.Map;
import org.gudy.azureus2.plugins.PluginException;
import org.gudy.azureus2.plugins.utils.resourcedownloader.*;
import org.gudy.azureus2.plugins.utils.resourceuploader.ResourceUploaderFactory;
import org.gudy.azureus2.plugins.utils.security.*;
import org.gudy.azureus2.plugins.utils.xml.simpleparser.*;
import org.gudy.azureus2.plugins.utils.xml.rss.*;
public interface
Utilities
{
public String
getAzureusUserDir();
public String
getAzureusProgramDir();
public boolean
isCVSVersion();
public boolean
isWindows();
public boolean
isLinux();
public boolean
isSolaris();
public boolean
isOSX();
/**
* @return Whether the OS is a unix flavor (linux, bsd, aix, etc)
*
* @since 2.4.0.3
*/
boolean isUnix();
/**
* @return Whether the OS is FreeBSD
*
* @note Up to at least v2.4.0.2, the FreeBSD port has identified itself
* to azureus as Linux and not FreeBSD
*
* @since 2.4.0.3
*/
boolean isFreeBSD();
public InputStream
getImageAsStream(
String image_name );
public Semaphore
getSemaphore();
public Monitor getMonitor();
public ByteBuffer
allocateDirectByteBuffer(
int size );
public void
freeDirectByteBuffer(
ByteBuffer buffer );
public PooledByteBuffer
allocatePooledByteBuffer(
int size );
public PooledByteBuffer
allocatePooledByteBuffer(
byte[] data );
/**
*
* @param data must be b-encodable
* @return
*/
public PooledByteBuffer
allocatePooledByteBuffer(
Map data )
throws IOException;
public Formatters
getFormatters();
public LocaleUtilities
getLocaleUtilities();
/**
* Creates a <code>UTTimer</code> instance.
*
* @param name Name for the UTTimer object.
* @return A UTTimer instance.
*/
public UTTimer
createTimer(
String name );
/**
* Creates a <code>UTTimer</code> instance.
*
* @param name Name for the UTTimer object.
* @param lightweight If <code>true</code>, it indicates that this timer will be used to
* perform small lightweight tasks. If <code>false</code>, it indicates that
* this timer will be used to perform expensive tasks. This allows Azureus to create
* the appropriate amount of resources to manage this timer.
* @return A UTTimer instance.
*/
public UTTimer
createTimer(
String name,
boolean lightweight );
/**
* Creates a <code>UTTimer</code> instance.
*
* @param name Name for the UTTimer object.
* @param priority The Thread.<i>XXX_</i>PRIORITY value to use.
* @return A UTTimer instance.
*/
public UTTimer createTimer(String name, int priority);
/**
* create and run a thread for the target. This will be a daemon thread so that
* its existence doesn't interfere with Azureus closedown
* @param name
* @param target
*/
public void
createThread(
String name,
Runnable target );
/**
* create a child process and executes the supplied command line. The child process
* will not inherit any open handles on Windows, which does happen if Runtime is
* used directly. This relies on the Platform plugin, if this is not installed then
* this will fall back to using Runtime.exec
* @param command_line
*/
public void
createProcess(
String command_line )
throws PluginException;
public ResourceDownloaderFactory
getResourceDownloaderFactory();
public ResourceUploaderFactory
getResourceUploaderFactory();
public SESecurityManager
getSecurityManager();
public SimpleXMLParserDocumentFactory
getSimpleXMLParserDocumentFactory();
public RSSFeed
getRSSFeed(
URL feed_location )
throws ResourceDownloaderException, SimpleXMLParserDocumentException;
public RSSFeed
getRSSFeed(
ResourceDownloader feed_location )
throws ResourceDownloaderException, SimpleXMLParserDocumentException;
/**
* Returns a public IP address of the machine or null if it can't be determined
*/
public InetAddress
getPublicAddress();
public InetAddress
getPublicAddress(
boolean ipv6 );
/**
* attempts a reverse DNS lookup of an address, null if it fails
* @param address
* @return
*/
public String
reverseDNSLookup(
InetAddress address );
/**
* Get the current system time, like System.currentTimeMillis(),
* only the time lookup is cached for performance reasons.
* @return current system time
*/
public long getCurrentSystemTime();
public ByteArrayWrapper
createWrapper(
byte[] data );
/**
* create a dispatcher that will queue runnable items until either the limit
* is reached or the dispatcher hasn't had an entry added for the defined idle time
* @param idle_dispatch_time milliseconds
* @param max_queue_size 0 -> infinite
* @return
*/
public AggregatedDispatcher
createAggregatedDispatcher(
long idle_dispatch_time,
long max_queue_size );
public AggregatedList
createAggregatedList(
AggregatedListAcceptor acceptor,
long idle_dispatch_time,
long max_queue_size );
public Map
readResilientBEncodedFile(
File parent_dir,
String file_name,
boolean use_backup );
public void
writeResilientBEncodedFile(
File parent_dir,
String file_name,
Map data,
boolean use_backup );
/**
* Compares two version strings for order.
* Returns a negative integer, zero, or a positive integer as the first
* argument is less than, equal to, or greater than the second.
* <p>
* Example:<br>
* compareVersions("1.1.0.0", "1.1.2.0"); // -
* compareVersions("1.1.0.0", "1.1.0"); // 0
* compareVersions("1.1.1.1", "1.1.1"); // +
*
* @param v1 the first version string to be compared
* @param v2 the second version string to be compared
* @return a negative integer, zero, or a positive integer as the first
* argument is less than, equal to, or greater than the second.
*
* @since 2.3.0.7
*/
public int compareVersions(String v1, String v2);
/**
* Converts a file name so that all characters in the file name are
* compatible with the underlying filesystem. This includes quote
* characters, back and forwarded slashes, newline characters and so on.
*
* <p>
*
* Note - this is only intended for file names, rather than file paths.
*
* @param f_name File name to convert.
* @return Converted file name.
*/
public String normaliseFileName(String f_name);
}
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