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

288 lines
7.3 KiB
Java

package net.minecraft.src;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import net.minecraft.server.MinecraftServer;
public class SaveHandler implements ISaveHandler, IPlayerFileData {
/** The directory in which to save world data. */
private final File worldDirectory;
/** The directory in which to save player data. */
private final File playersDirectory;
private final File mapDataDir;
/**
* The time in milliseconds when this field was initialized. Stored in the
* session lock file.
*/
private final long initializationTime = System.currentTimeMillis();
/** The directory name of the world */
private final String saveDirectoryName;
public SaveHandler(File par1File, String par2Str, boolean par3) {
this.worldDirectory = new File(par1File, par2Str);
this.worldDirectory.mkdirs();
this.playersDirectory = new File(this.worldDirectory, "players");
this.mapDataDir = new File(this.worldDirectory, "data");
this.mapDataDir.mkdirs();
this.saveDirectoryName = par2Str;
if (par3) {
this.playersDirectory.mkdirs();
}
this.setSessionLock();
}
/**
* Creates a session lock file for this process
*/
private void setSessionLock() {
try {
File var1 = new File(this.worldDirectory, "session.lock");
DataOutputStream var2 = new DataOutputStream(new FileOutputStream(var1));
try {
var2.writeLong(this.initializationTime);
} finally {
var2.close();
}
} catch (IOException var7) {
var7.printStackTrace();
throw new RuntimeException("Failed to check session lock, aborting");
}
}
/**
* Gets the File object corresponding to the base directory of this world.
*/
protected File getWorldDirectory() {
return this.worldDirectory;
}
/**
* Checks the session lock to prevent save collisions
*/
public void checkSessionLock() throws MinecraftException {
try {
File var1 = new File(this.worldDirectory, "session.lock");
DataInputStream var2 = new DataInputStream(new FileInputStream(var1));
try {
if (var2.readLong() != this.initializationTime) {
throw new MinecraftException("The save is being accessed from another location, aborting");
}
} finally {
var2.close();
}
} catch (IOException var7) {
throw new MinecraftException("Failed to check session lock, aborting");
}
}
/**
* initializes and returns the chunk loader for the specified world provider
*/
public IChunkLoader getChunkLoader(WorldProvider par1WorldProvider) {
throw new RuntimeException("Old Chunk Storage is no longer supported.");
}
/**
* Loads and returns the world info
*/
public WorldInfo loadWorldInfo() {
File var1 = new File(this.worldDirectory, "level.dat");
NBTTagCompound var2;
NBTTagCompound var3;
if (var1.exists()) {
try {
var2 = CompressedStreamTools.readCompressed(new FileInputStream(var1));
var3 = var2.getCompoundTag("Data");
return new WorldInfo(var3);
} catch (Exception var5) {
var5.printStackTrace();
}
}
var1 = new File(this.worldDirectory, "level.dat_old");
if (var1.exists()) {
try {
var2 = CompressedStreamTools.readCompressed(new FileInputStream(var1));
var3 = var2.getCompoundTag("Data");
return new WorldInfo(var3);
} catch (Exception var4) {
var4.printStackTrace();
}
}
return null;
}
/**
* Saves the given World Info with the given NBTTagCompound as the Player.
*/
public void saveWorldInfoWithPlayer(WorldInfo par1WorldInfo, NBTTagCompound par2NBTTagCompound) {
NBTTagCompound var3 = par1WorldInfo.cloneNBTCompound(par2NBTTagCompound);
NBTTagCompound var4 = new NBTTagCompound();
var4.setTag("Data", var3);
try {
File var5 = new File(this.worldDirectory, "level.dat_new");
File var6 = new File(this.worldDirectory, "level.dat_old");
File var7 = new File(this.worldDirectory, "level.dat");
CompressedStreamTools.writeCompressed(var4, new FileOutputStream(var5));
if (var6.exists()) {
var6.delete();
}
var7.renameTo(var6);
if (var7.exists()) {
var7.delete();
}
var5.renameTo(var7);
if (var5.exists()) {
var5.delete();
}
} catch (Exception var8) {
var8.printStackTrace();
}
}
/**
* used to update level.dat from old format to MCRegion format
*/
public void saveWorldInfo(WorldInfo par1WorldInfo) {
NBTTagCompound var2 = par1WorldInfo.getNBTTagCompound();
NBTTagCompound var3 = new NBTTagCompound();
var3.setTag("Data", var2);
try {
File var4 = new File(this.worldDirectory, "level.dat_new");
File var5 = new File(this.worldDirectory, "level.dat_old");
File var6 = new File(this.worldDirectory, "level.dat");
CompressedStreamTools.writeCompressed(var3, new FileOutputStream(var4));
if (var5.exists()) {
var5.delete();
}
var6.renameTo(var5);
if (var6.exists()) {
var6.delete();
}
var4.renameTo(var6);
if (var4.exists()) {
var4.delete();
}
} catch (Exception var7) {
var7.printStackTrace();
}
}
/**
* Writes the player data to disk from the specified PlayerEntityMP.
*/
public void writePlayerData(EntityPlayer par1EntityPlayer) {
try {
NBTTagCompound var2 = new NBTTagCompound();
par1EntityPlayer.writeToNBT(var2);
File var3 = new File(this.playersDirectory, par1EntityPlayer.username + ".dat.tmp");
File var4 = new File(this.playersDirectory, par1EntityPlayer.username + ".dat");
CompressedStreamTools.writeCompressed(var2, new FileOutputStream(var3));
if (var4.exists()) {
var4.delete();
}
var3.renameTo(var4);
} catch (Exception var5) {
MinecraftServer.getServer().getLogAgent()
.func_98236_b("Failed to save player data for " + par1EntityPlayer.username);
}
}
/**
* Reads the player data from disk into the specified PlayerEntityMP.
*/
public NBTTagCompound readPlayerData(EntityPlayer par1EntityPlayer) {
NBTTagCompound var2 = this.getPlayerData(par1EntityPlayer.username);
if (var2 != null) {
par1EntityPlayer.readFromNBT(var2);
}
return var2;
}
/**
* Gets the player data for the given playername as a NBTTagCompound.
*/
public NBTTagCompound getPlayerData(String par1Str) {
try {
File var2 = new File(this.playersDirectory, par1Str + ".dat");
if (var2.exists()) {
return CompressedStreamTools.readCompressed(new FileInputStream(var2));
}
} catch (Exception var3) {
MinecraftServer.getServer().getLogAgent().func_98236_b("Failed to load player data for " + par1Str);
}
return null;
}
public IPlayerFileData getPlayerNBTManager() {
return this;
}
/**
* Returns an array of usernames for which player.dat exists for.
*/
public String[] getAvailablePlayerDat() {
String[] var1 = this.playersDirectory.list();
for (int var2 = 0; var2 < var1.length; ++var2) {
if (var1[var2].endsWith(".dat")) {
var1[var2] = var1[var2].substring(0, var1[var2].length() - 4);
}
}
return var1;
}
/**
* Called to flush all changes to disk, waiting for them to complete.
*/
public void flush() {
}
/**
* Gets the file location of the given map
*/
public File getMapFileFromName(String par1Str) {
return new File(this.mapDataDir, par1Str + ".dat");
}
/**
* Returns the name of the directory where world information is saved.
*/
public String getWorldDirectoryName() {
return this.saveDirectoryName;
}
}