    001/*
    002 * Forge Mod Loader
    003 * Copyright (c) 2012-2013 cpw.
    004 * All rights reserved. This program and the accompanying materials
    005 * are made available under the terms of the GNU Lesser Public License v2.1
    006 * which accompanies this distribution, and is available at
    007 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
    008 *
    009 * Contributors:
    010 *     cpw - implementation
    011 */
    012
    013package cpw.mods.fml.common.discovery;
    014
    015import java.io.File;
    016import java.io.FileFilter;
    017import java.io.FileInputStream;
    018import java.util.Arrays;
    019import java.util.List;
    020import java.util.logging.Level;
    021import java.util.regex.Matcher;
    022
    023import com.google.common.base.Throwables;
    024import com.google.common.collect.Lists;
    025
    026import cpw.mods.fml.common.FMLLog;
    027import cpw.mods.fml.common.LoaderException;
    028import cpw.mods.fml.common.MetadataCollection;
    029import cpw.mods.fml.common.ModContainer;
    030import cpw.mods.fml.common.ModContainerFactory;
    031import cpw.mods.fml.common.discovery.asm.ASMModParser;
    032
    033public class DirectoryDiscoverer implements ITypeDiscoverer
    034{
    035    private class ClassFilter implements FileFilter
    036    {
    037        @Override
    038        public boolean accept(File file)
    039        {
    040            return (file.isFile() && classFile.matcher(file.getName()).find()) || file.isDirectory();
    041        }
    042    }
    043
    044    private ASMDataTable table;
    045
    046    @Override
    047    public List<ModContainer> discover(ModCandidate candidate, ASMDataTable table)
    048    {
    049        this.table = table;
    050        List<ModContainer> found = Lists.newArrayList();
    051        FMLLog.fine("Examining directory %s for potential mods", candidate.getModContainer().getName());
    052        exploreFileSystem("", candidate.getModContainer(), found, candidate, null);
    053        for (ModContainer mc : found)
    054        {
    055            table.addContainer(mc);
    056        }
    057        return found;
    058    }
    059
    060    public void exploreFileSystem(String path, File modDir, List<ModContainer> harvestedMods, ModCandidate candidate, MetadataCollection mc)
    061    {
    062        if (path.length() == 0)
    063        {
    064            File metadata = new File(modDir, "mcmod.info");
    065            try
    066            {
    067                FileInputStream fis = new FileInputStream(metadata);
    068                mc = MetadataCollection.from(fis,modDir.getName());
    069                fis.close();
    070                FMLLog.fine("Found an mcmod.info file in directory %s", modDir.getName());
    071            }
    072            catch (Exception e)
    073            {
    074                mc = MetadataCollection.from(null,"");
    075                FMLLog.fine("No mcmod.info file found in directory %s", modDir.getName());
    076            }
    077        }
    078
    079        File[] content = modDir.listFiles(new ClassFilter());
    080
    081        // Always sort our content
    082        Arrays.sort(content);
    083        for (File file : content)
    084        {
    085            if (file.isDirectory())
    086            {
    087                FMLLog.finest("Recursing into package %s", path + file.getName());
    088                exploreFileSystem(path + file.getName() + ".", file, harvestedMods, candidate, mc);
    089                continue;
    090            }
    091            Matcher match = classFile.matcher(file.getName());
    092
    093            if (match.matches())
    094            {
    095                ASMModParser modParser = null;
    096                try
    097                {
    098                    FileInputStream fis = new FileInputStream(file);
    099                    modParser = new ASMModParser(fis);
    100                    fis.close();
    101                }
    102                catch (LoaderException e)
    103                {
    104                    FMLLog.log(Level.SEVERE, e, "There was a problem reading the file %s - probably this is a corrupt file", file.getPath());
    105                    throw e;
    106                }
    107                catch (Exception e)
    108                {
    109                    Throwables.propagate(e);
    110                }
    111
    112                modParser.validate();
    113                modParser.sendToTable(table, candidate);
    114                ModContainer container = ModContainerFactory.instance().build(modParser, candidate.getModContainer(), candidate);
    115                if (container!=null)
    116                {
    117                    harvestedMods.add(container);
    118                    container.bindMetadata(mc);
    119                }
    120            }
    121
    122
    123        }
    124    }
    125
    126}