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