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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
TextureManager.java | 0% | 0% | 0% | 0% |
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/*
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VRMoo Server - Virtual Reality Object Oriented MUD Server
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Copyright (C) 2001 - 2003 VRMoo Development Team
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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For information about VRMoo and its authors, please visit the website:
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http://www.vrmoo.org/
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*/
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package org.vrmoo.server.data;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.List;
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import org.vrmoo.common.exception.VRMooException;
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import org.vrmoo.common.exception.VRMooParseException;
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import org.vrmoo.common.util.Base64Utility;
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import org.vrmoo.common.util.CommandHandler;
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import org.vrmoo.common.util.CommandProcessor;
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import org.vrmoo.common.util.FileUtility;
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import org.vrmoo.common.util.ParserUtility;
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import org.vrmoo.server.client.AllClients;
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import org.vrmoo.server.client.ClientHandler;
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import org.vrmoo.server.world.World;
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/**
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* Manages a set of textures.
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*
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* @author Jeff Weston
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*/
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public class TextureManager extends CommandHandler implements CommandProcessor |
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{ |
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/**
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* The prefix used for texture commands.
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*/
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private static final String TEXTURE_COMMAND_PREFIX = "texture:"; |
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/**
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* The directory of textures that we are managing.
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*/
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private String textureDir;
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/**
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* The world that we are managing textures for.
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*/
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private World world;
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/**
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* A list of data for all the textures handled by this class.
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*/
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private List textureDataList;
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/**
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* Construct this class using the given world data directory. The texture
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* data directory this class uses will be based upon the world data
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* directory passed in here.
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*
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* @param world the world we are managing textures for
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*/
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79 | 0 |
public TextureManager( World world )
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{ |
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addCommandProcessor( new TextureListCommandProcessor( ) );
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82 | 0 |
addCommandProcessor( new AddTextureCommandProcessor( ) );
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addCommandProcessor( new DeleteTextureCommandProcessor( ) );
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85 | 0 |
textureDataList = new ArrayList( );
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86 | 0 |
this.world = world;
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87 | 0 |
world.addCommandProcessor( this );
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88 | 0 |
textureDir = world.getWorldDataDirectory( ) + "/textures";
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89 | 0 |
File dir = new File( textureDir );
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90 | 0 |
FileUtility.ensureDirectoryExists( dir ); |
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92 | 0 |
File[ ] files = dir.listFiles( ); |
93 | 0 |
for ( int i = 0; i < files.length; i++ ) |
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{ |
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addTextureData( files[ i ] ); |
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} |
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} |
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/**
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* Establish what type of commands that the class implementing this
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* interface can process. Returns a String indicating the prefix to look
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* for in the commands sent to the client or the server.
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*
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* @return the command prefix
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*/
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106 | 0 |
public String getCommandPrefix( )
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{ |
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108 | 0 |
return TEXTURE_COMMAND_PREFIX;
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} |
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/**
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* Process a command matching the command prefix established by the
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* <code>getCommandPrefix()</code> method.
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*
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* @param command the command to process
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* @param extraData extra data that isn't part of the command but may be
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* needed for dealing with the command (such as the ID
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* of the client that sent the command)
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*
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* @throws VRMooException for any errors while processing the command
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*/
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122 | 0 |
public synchronized void processCommand( String command, String extraData ) |
123 |
throws VRMooException
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{ |
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125 | 0 |
String textureCommand = command.substring( |
126 |
TEXTURE_COMMAND_PREFIX.length( ) ).trim( ); |
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128 | 0 |
handleCommand( textureCommand, extraData ); |
129 |
} |
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/**
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* Indicate that a new client has connected to the world and that this
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* texture manager should perform the texture initialization procedure
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* with the client.
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*
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* @param client the <code>ClientHandler</code> that connected
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*/
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138 | 0 |
public void newClientConnected( ClientHandler client ) |
139 |
{ |
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140 | 0 |
client.writeLine( "world: texture: listTextures" );
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} |
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/**
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* Takes a texture specified by a <code>File</code> object and adds its data
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* to the texture data list.
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*
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* @param textureFile the file indicating which texture's data to add
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*/
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149 | 0 |
private void addTextureData( File textureFile ) |
150 |
{ |
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String name = textureFile.getName( ); |
152 | 0 |
long crc = 0;
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154 | 0 |
try
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{ |
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156 | 0 |
crc = FileUtility.computeCRC32( textureFile ); |
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} |
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catch ( Exception e )
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{ |
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160 | 0 |
e.printStackTrace( ); |
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} |
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textureDataList.add( new TextureData( name, crc ) );
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} |
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/**
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* Takes a texture specified by a <code>File</code> object and deletes its
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* data from the texture data list.
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*
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* @param textureFile the file indicating which texture's data to delete
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*/
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172 | 0 |
private void deleteTextureData( File textureFile ) |
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{ |
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174 | 0 |
String name = textureFile.getName( ); |
175 |
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176 | 0 |
for ( int i = 0; i < textureDataList.size( ); i++ ) |
177 |
{ |
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178 | 0 |
TextureData textureData = ( TextureData ) textureDataList.get( i ); |
179 | 0 |
if ( textureData.getName( ).equals( name ) )
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{ |
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181 | 0 |
textureDataList.remove( i ); |
182 | 0 |
break;
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} |
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} |
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} |
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/**
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* Private inner class for keeping track of various bits of data about a
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* texture.
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*/
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private class TextureData |
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{ |
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/**
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* The name of the texture.
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*/
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private String name;
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/**
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* The CRC-32 of the texture.
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*/
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private long crc; |
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/**
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* Construct this class with a given texture name and CRC-32 of the
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* texture.
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*
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* @param name the name of the texture
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* @param crc the CRC-32 of the texture
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*/
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210 | 0 |
public TextureData( String name, long crc ) |
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{ |
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this.name = name;
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213 | 0 |
this.crc = crc;
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} |
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/**
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* Accessor for the texture name.
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*
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* @return the texture name
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*/
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221 | 0 |
public String getName( )
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{ |
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return name;
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} |
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/**
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* Accessor for the texture CRC-32.
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*
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* @return the texture CRC-32
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*/
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231 | 0 |
public long getCRC( ) |
232 |
{ |
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233 | 0 |
return crc;
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} |
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} |
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/**
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* Private inner class implementing the <code>CommandProcessor</code>
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* interface for dealing with the "deleteTexture" command sent from
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* the client. This class removes the texture from the list of current
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* textures, removes the file, and notifies all connected clients.
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*/
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private class DeleteTextureCommandProcessor implements CommandProcessor |
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{ |
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/**
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* The prefix for the command handled by this processor.
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*/
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private static final String PREFIX = "deleteTexture:"; |
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/**
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* Returns the command prefix used to recognize commands that this
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* processor can handle.
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*
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* @return the command prefix
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*/
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256 | 0 |
public String getCommandPrefix( )
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{ |
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258 | 0 |
return PREFIX;
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} |
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260 |
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/**
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* Process a command matching the command prefix established by the
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263 |
* <code>getCommandPrefix()</code> method.
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*
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* @param command the command to process
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* @param extraData extra data that isn't part of the command but may
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* be needed for dealing with the command (such as
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* the ID of the client that sent the command)
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*
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270 |
* @throws VRMooParseException for any parsing errors while processing
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271 |
* the command
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*/
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273 | 0 |
public void processCommand( String command, String extraData ) |
274 |
throws VRMooParseException
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{ |
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276 | 0 |
String texture = command.substring( PREFIX.length( ) ).trim( ); |
277 | 0 |
File file = new File( textureDir + "/" + texture ); |
278 | 0 |
deleteTextureData( file ); |
279 | 0 |
file.delete( ); |
280 | 0 |
world.broadcast( "world: texture: deleteTexture: " + texture );
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281 |
} |
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282 |
} |
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283 |
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284 |
/**
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* Private inner class implementing the <code>CommandProcessor</code>
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* interface for dealing with the "addTexture" command sent from the client.
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287 |
* This class adds the texture to the list of current textures, writes it as
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* data, and notifies all connected clients.
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289 |
*/
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290 |
private class AddTextureCommandProcessor implements CommandProcessor |
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291 |
{ |
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292 |
/**
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293 |
* The prefix for the command handled by this processor.
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294 |
*/
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295 |
private static final String PREFIX = "addTexture:"; |
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296 |
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297 |
/**
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298 |
* Returns the command prefix used to recognize commands that this
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299 |
* processor can handle.
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300 |
*
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301 |
* @return the command prefix
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302 |
*/
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303 | 0 |
public String getCommandPrefix( )
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304 |
{ |
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305 | 0 |
return PREFIX;
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306 |
} |
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307 |
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308 |
/**
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309 |
* Process a command matching the command prefix established by the
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310 |
* <code>getCommandPrefix()</code> method.
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311 |
*
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312 |
* @param command the command to process
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313 |
* @param extraData extra data that isn't part of the command but may
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314 |
* be needed for dealing with the command (such as
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315 |
* the ID of the client that sent the command)
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316 |
*
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317 |
* @throws VRMooParseException for any parsing errors while processing
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318 |
* the command
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319 |
*/
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320 | 0 |
public void processCommand( String command, String extraData ) |
321 |
throws VRMooParseException
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322 |
{ |
|
323 | 0 |
String textureData = |
324 |
command.substring( PREFIX.length( ) ).trim( ); |
|
325 | 0 |
int delimiter = textureData.indexOf( "," ); |
326 | 0 |
String textureName = textureData.substring( 0, delimiter ).trim( ); |
327 | 0 |
String base64Data = textureData.substring( delimiter + 1 ).trim( ); |
328 | 0 |
byte[ ] data = Base64Utility.toBinary( base64Data );
|
329 | 0 |
try
|
330 |
{ |
|
331 | 0 |
File file = new File( textureDir + "/" + textureName ); |
332 | 0 |
FileUtility.writeFile( file, data ); |
333 | 0 |
addTextureData( file ); |
334 |
} |
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335 |
catch ( Exception e )
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|
336 |
{ |
|
337 | 0 |
e.printStackTrace( ); |
338 |
} |
|
339 | 0 |
world.broadcast( "world: texture: addTexture: " + textureName +
|
340 |
", " + base64Data );
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341 |
} |
|
342 |
} |
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343 |
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344 |
/**
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345 |
* Private inner class implementing the <code>CommandProcessor</code>
|
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346 |
* interface for dealing with the "textureList" command sent from the
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347 |
* client.
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348 |
*/
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349 |
private class TextureListCommandProcessor implements CommandProcessor |
|
350 |
{ |
|
351 |
/**
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|
352 |
* The prefix for the command handled by this processor.
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353 |
*/
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354 |
private static final String PREFIX = "textureList:"; |
|
355 |
|
|
356 |
/**
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|
357 |
* Returns the command prefix used to recognize commands that this
|
|
358 |
* processor can handle.
|
|
359 |
*
|
|
360 |
* @return the command prefix
|
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361 |
*/
|
|
362 | 0 |
public String getCommandPrefix( )
|
363 |
{ |
|
364 | 0 |
return PREFIX;
|
365 |
} |
|
366 |
|
|
367 |
/**
|
|
368 |
* Process a command matching the command prefix established by the
|
|
369 |
* <code>getCommandPrefix()</code> method.
|
|
370 |
*
|
|
371 |
* @param command the command to process
|
|
372 |
* @param extraData extra data that isn't part of the command but may
|
|
373 |
* be needed for dealing with the command (such as
|
|
374 |
* the ID of the client that sent the command)
|
|
375 |
*
|
|
376 |
* @throws VRMooException for any errors while processing the command
|
|
377 |
*/
|
|
378 | 0 |
public void processCommand( String command, String extraData ) |
379 |
throws VRMooException
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|
380 |
{ |
|
381 | 0 |
int clientId = ParserUtility.parseInt( extraData );
|
382 | 0 |
ClientHandler client = AllClients.getClientByID( clientId ); |
383 | 0 |
List textureList = new ArrayList( );
|
384 |
|
|
385 | 0 |
if ( command.length( ) > PREFIX.length( ) )
|
386 |
{ |
|
387 | 0 |
String textures = command.substring( |
388 |
PREFIX.length( ) ).trim( ); |
|
389 |
|
|
390 | 0 |
int nextIndex;
|
391 | 0 |
do
|
392 |
{ |
|
393 | 0 |
nextIndex = textures.indexOf( "," );
|
394 | 0 |
String curTexture; |
395 | 0 |
if ( nextIndex == -1 )
|
396 |
{ |
|
397 | 0 |
curTexture = textures; |
398 |
} |
|
399 |
else
|
|
400 |
{ |
|
401 | 0 |
curTexture = textures.substring( 0, nextIndex ).trim( ); |
402 | 0 |
textures = textures.substring( nextIndex + 1 ).trim( ); |
403 |
} |
|
404 | 0 |
int delimiter = curTexture.indexOf( "*" ); |
405 | 0 |
String name = curTexture.substring( 0, delimiter ).trim( ); |
406 | 0 |
String crc = curTexture.substring( delimiter + 1 ).trim( ); |
407 | 0 |
long lCRC = ParserUtility.parseLong( crc );
|
408 | 0 |
textureList.add( new TextureData( name, lCRC ) );
|
409 |
} |
|
410 | 0 |
while ( nextIndex != -1 );
|
411 |
} |
|
412 |
|
|
413 | 0 |
boolean processComplete = true; |
414 |
|
|
415 |
// Determine which textures need to be deleted on the client.
|
|
416 | 0 |
for ( int i = 0; i < textureList.size( ); i++ ) |
417 |
{ |
|
418 | 0 |
TextureData textureData = ( TextureData ) textureList.get( i ); |
419 | 0 |
if ( ! containsTexture( textureData, textureDataList ) )
|
420 |
{ |
|
421 | 0 |
processComplete = false;
|
422 | 0 |
client.writeLine( "world: texture: deleteTexture: " +
|
423 |
textureData.getName( ) ); |
|
424 |
} |
|
425 |
} |
|
426 |
|
|
427 |
// Determine which textures need to be created on the client.
|
|
428 | 0 |
for ( int i = 0; i < textureDataList.size( ); i++ ) |
429 |
{ |
|
430 | 0 |
TextureData textureData = |
431 |
( TextureData ) textureDataList.get( i ); |
|
432 | 0 |
if ( ! containsTexture( textureData, textureList ) )
|
433 |
{ |
|
434 | 0 |
File file = new File( textureDir + "/" + |
435 |
textureData.getName( ) ); |
|
436 | 0 |
String base64 = "";
|
437 | 0 |
try
|
438 |
{ |
|
439 | 0 |
base64 = Base64Utility.toBase64( |
440 |
FileUtility.readFile( file ) ); |
|
441 |
} |
|
442 |
catch ( Exception e )
|
|
443 |
{ |
|
444 | 0 |
e.printStackTrace( ); |
445 |
} |
|
446 | 0 |
processComplete = false;
|
447 | 0 |
client.writeLine( "world: texture: addTexture: " +
|
448 |
textureData.getName( ) + ", " +
|
|
449 |
base64 ); |
|
450 |
} |
|
451 |
} |
|
452 |
|
|
453 | 0 |
if ( processComplete )
|
454 |
{ |
|
455 | 0 |
client.writeLine( "world: texture: activate" );
|
456 | 0 |
world.clientFinishedTextures( client ); |
457 |
} |
|
458 |
else
|
|
459 |
{ |
|
460 | 0 |
client.writeLine( "world: texture: listTextures" );
|
461 |
} |
|
462 |
} |
|
463 |
|
|
464 |
/**
|
|
465 |
* Determines if a specified <code>TextureData</code> is contained in
|
|
466 |
* a specified <code>List</code>.
|
|
467 |
*
|
|
468 |
* @param data the <code>TextureData</code> to look for
|
|
469 |
* @param list the <code>List</code> to look in
|
|
470 |
*
|
|
471 |
* @return true if found, false otherwise
|
|
472 |
*/
|
|
473 | 0 |
private boolean containsTexture( TextureData data, List list ) |
474 |
{ |
|
475 | 0 |
for ( int i = 0; i < list.size( ); i++ ) |
476 |
{ |
|
477 | 0 |
TextureData textureData = ( TextureData ) list.get( i ); |
478 | 0 |
if ( ( data.getName( ).equals( textureData.getName( ) ) ) &&
|
479 |
( data.getCRC( ) == textureData.getCRC( ) ) ) |
|
480 |
{ |
|
481 | 0 |
return true; |
482 |
} |
|
483 |
} |
|
484 | 0 |
return false; |
485 |
} |
|
486 |
} |
|
487 |
} |
|
488 |
|
|