net.minecraft.server.RegionFileCache Maven / Gradle / Ivy

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package net.minecraft.server;

import com.google.common.collect.Maps;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;

public class RegionFileCache {

  public static final Map a = Maps.newHashMap(); // Spigot - private -> public

  public static synchronized RegionFile a(File file, int i, int j) {
    File file1 = new File(file, "region");
    File file2 = new File(file1, "r." + (i >> 5) + "." + (j >> 5) + ".mca");
    RegionFile regionfile = (RegionFile) RegionFileCache.a.get(file2);

    if (regionfile != null) {
      return regionfile;
    } else {
      if (!file1.exists()) {
        file1.mkdirs();
      }

      if (RegionFileCache.a.size() >= 256) {
        a();
      }

      RegionFile regionfile1 = new RegionFile(file2);

      RegionFileCache.a.put(file2, regionfile1);
      return regionfile1;
    }
  }

  public static synchronized void a() {
    Iterator iterator = RegionFileCache.a.values().iterator();

    while (iterator.hasNext()) {
      RegionFile regionfile = (RegionFile) iterator.next();

      try {
        if (regionfile != null) {
          regionfile.c();
        }
      } catch (IOException ioexception) {
        ioexception.printStackTrace();
      }
    }

    RegionFileCache.a.clear();
  }

  public static DataInputStream c(File file, int i, int j) {
    RegionFile regionfile = a(file, i, j);

    return regionfile.a(i & 31, j & 31);
  }

  public static DataOutputStream d(File file, int i, int j) {
    RegionFile regionfile = a(file, i, j);

    return regionfile.b(i & 31, j & 31);
  }
}