eaglercraft-1.5/sp-server/src_aux/RegionFileCache.java

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2022-02-16 17:54:12 -08:00
package net.minecraft.src;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
public class RegionFileCache {
/** A map containing Files as keys and RegionFiles as values */
private static final Map regionsByFilename = new HashMap();
public static synchronized RegionFile createOrLoadRegionFile(File par0File, int par1, int par2) {
File var3 = new File(par0File, "region");
File var4 = new File(var3, "r." + (par1 >> 5) + "." + (par2 >> 5) + ".mca");
RegionFile var5 = (RegionFile) regionsByFilename.get(var4);
if (var5 != null) {
return var5;
} else {
if (!var3.exists()) {
var3.mkdirs();
}
if (regionsByFilename.size() >= 256) {
clearRegionFileReferences();
}
RegionFile var6 = new RegionFile(var4);
regionsByFilename.put(var4, var6);
return var6;
}
}
/**
* clears region file references
*/
public static synchronized void clearRegionFileReferences() {
Iterator var0 = regionsByFilename.values().iterator();
while (var0.hasNext()) {
RegionFile var1 = (RegionFile) var0.next();
try {
if (var1 != null) {
var1.close();
}
} catch (IOException var3) {
var3.printStackTrace();
}
}
regionsByFilename.clear();
}
/**
* Returns an input stream for the specified chunk. Args: worldDir, chunkX,
* chunkZ
*/
public static DataInputStream getChunkInputStream(File par0File, int par1, int par2) {
RegionFile var3 = createOrLoadRegionFile(par0File, par1, par2);
return var3.getChunkDataInputStream(par1 & 31, par2 & 31);
}
/**
* Returns an output stream for the specified chunk. Args: worldDir, chunkX,
* chunkZ
*/
public static DataOutputStream getChunkOutputStream(File par0File, int par1, int par2) {
RegionFile var3 = createOrLoadRegionFile(par0File, par1, par2);
return var3.getChunkDataOutputStream(par1 & 31, par2 & 31);
}
}