/*
* Forge Mod Loader
* Copyright (c) 2012-2013 cpw.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Lesser Public License v2.1
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
* Contributors:
* cpw - implementation
*/
package cpw.mods.fml.common.discovery;
import java.util.Collections;
import java.util.List;
import java.util.jar.JarFile;
import org.apache.logging.log4j.Level;
import java.util.regex.Matcher;
import java.util.zip.ZipEntry;
import com.google.common.collect.Lists;
import cpw.mods.fml.common.FMLLog;
import cpw.mods.fml.common.LoaderException;
import cpw.mods.fml.common.MetadataCollection;
import cpw.mods.fml.common.ModContainer;
import cpw.mods.fml.common.ModContainerFactory;
import cpw.mods.fml.common.discovery.asm.ASMModParser;
public class JarDiscoverer implements ITypeDiscoverer
{
@Override
public List<ModContainer> discover(ModCandidate candidate, ASMDataTable table)
{
List<ModContainer> foundMods = Lists.newArrayList();
FMLLog.fine("Examining file %s for potential mods", candidate.getModContainer().getName());
JarFile jar = null;
try
{
jar = new JarFile(candidate.getModContainer());
if (jar.getManifest()!=null && (jar.getManifest().getMainAttributes().get("FMLCorePlugin") != null || jar.getManifest().getMainAttributes().get("TweakClass") != null))
{
FMLLog.finer("Ignoring coremod or tweak system %s", candidate.getModContainer());
return foundMods;
}
ZipEntry modInfo = jar.getEntry("mcmod.info");
MetadataCollection mc = null;
if (modInfo != null)
{
FMLLog.finer("Located mcmod.info file in file %s", candidate.getModContainer().getName());
mc = MetadataCollection.from(jar.getInputStream(modInfo), candidate.getModContainer().getName());
}
else
{
FMLLog.fine("The mod container %s appears to be missing an mcmod.info file", candidate.getModContainer().getName());
mc = MetadataCollection.from(null, "");
}
for (ZipEntry ze : Collections.list(jar.entries()))
{
if (ze.getName()!=null && ze.getName().startsWith("__MACOSX"))
{
continue;
}
Matcher match = classFile.matcher(ze.getName());
if (match.matches())
{
ASMModParser modParser;
try
{
modParser = new ASMModParser(jar.getInputStream(ze));
candidate.addClassEntry(ze.getName());
}
catch (LoaderException e)
{
FMLLog.log(Level.ERROR, e, "There was a problem reading the entry %s in the jar %s - probably a corrupt zip", ze.getName(), candidate.getModContainer().getPath());
jar.close();
throw e;
}
modParser.validate();
modParser.sendToTable(table, candidate);
ModContainer container = ModContainerFactory.instance().build(modParser, candidate.getModContainer(), candidate);
if (container!=null)
{
table.addContainer(container);
foundMods.add(container);
container.bindMetadata(mc);
}
}
}
}
catch (Exception e)
{
FMLLog.log(Level.WARN, e, "Zip file %s failed to read properly, it will be ignored", candidate.getModContainer().getName());
}
finally
{
if (jar != null)
{
try
{
jar.close();
}
catch (Exception e)
{
}
}
}
return foundMods;
}
}