83 lines
2.8 KiB
Java
83 lines
2.8 KiB
Java
/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Applied Energistics 2 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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package appeng.transformer.asm;
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import appeng.helpers.Reflected;
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import cpw.mods.fml.relauncher.FMLRelaunchLog;
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import net.minecraft.launchwrapper.IClassTransformer;
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import net.minecraft.launchwrapper.LaunchClassLoader;
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import org.apache.logging.log4j.Level;
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import java.net.URL;
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import java.net.URLConnection;
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/*
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* It is a ClassTransformer which can transformer the older AE2 api class that some addons including,
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* which can occur the crash due to java.lang.NoSuchMethodError.
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* See also : https://github.com/xsun2001/Applied-Energistics-2-Unofficial/issues/1
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*/
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@Reflected
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public class ApiRepairer implements IClassTransformer
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{
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private LaunchClassLoader launchClassLoader;
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public ApiRepairer()
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{
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launchClassLoader = (LaunchClassLoader) this.getClass().getClassLoader();
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FMLRelaunchLog.log( "AE2-ApiRepairer", Level.INFO, "AE2 ApiFixer Installed" );
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}
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@Override public byte[] transform( String name, String transformedName, byte[] basicClass )
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{
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if( transformedName.startsWith( "appeng.api" ) )
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{
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try
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{
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String clazzurl = getClass().getResource( "" ).toString();
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clazzurl = clazzurl.substring( 0, clazzurl.length() - 23 ) + transformedName.replace( '.', '/' ) + ".class";
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//23 is "appeng/transformer/asm"'s length + 1
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URL url = new URL( clazzurl );
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URLConnection connection = url.openConnection();
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byte[] bytes = new byte[connection.getContentLength()];
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if( connection.getInputStream().read( bytes ) == -1 )
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{
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FMLRelaunchLog.log( "AE2-ApiRepairer", Level.ERROR, "Failed to fix api class [%s] because the new class couldn't be read", transformedName );
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return basicClass;
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}
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for( IClassTransformer ct : launchClassLoader.getTransformers() )
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{
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if( ct == this )
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continue;
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bytes = ct.transform( name, transformedName, bytes );
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}
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return bytes;
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}
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catch( Exception e )
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{
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FMLRelaunchLog.log( "AE2-ApiRepairer", Level.ERROR, "Failed to fix api class [%s] because of [%s]", transformedName, e.getClass().getName() );
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return basicClass;
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}
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}
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return basicClass;
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}
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}
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