package net.minecraft.world.storage;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import net.minecraft.nbt.CompressedStreamTools;
import net.minecraft.nbt.NBTBase;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagShort;
import net.minecraft.world.WorldSavedData;
public class MapStorage
{
private ISaveHandler saveHandler;
/** Map of item data String id to loaded MapDataBases */
private Map loadedDataMap = new HashMap();
/** List of loaded MapDataBases. */
private List loadedDataList = new ArrayList();
/**
* Map of MapDataBase id String prefixes ('map' etc) to max known unique Short id (the 0 part etc) for that prefix
*/
private Map idCounts = new HashMap();
public MapStorage(ISaveHandler par1ISaveHandler)
{
this.saveHandler = par1ISaveHandler;
this.loadIdCounts();
}
/**
* Loads an existing MapDataBase corresponding to the given String id from disk, instantiating the given Class, or
* returns null if none such file exists. args: Class to instantiate, String dataid
*/
public WorldSavedData loadData(Class par1Class, String par2Str)
{
WorldSavedData worldsaveddata = (WorldSavedData)this.loadedDataMap.get(par2Str);
if (worldsaveddata != null)
{
return worldsaveddata;
}
else
{
if (this.saveHandler != null)
{
try
{
File file1 = this.saveHandler.getMapFileFromName(par2Str);
if (file1 != null && file1.exists())
{
try
{
worldsaveddata = (WorldSavedData)par1Class.getConstructor(new Class[] {String.class}).newInstance(new Object[] {par2Str});
}
catch (Exception exception)
{
throw new RuntimeException("Failed to instantiate " + par1Class.toString(), exception);
}
FileInputStream fileinputstream = new FileInputStream(file1);
NBTTagCompound nbttagcompound = CompressedStreamTools.readCompressed(fileinputstream);
fileinputstream.close();
worldsaveddata.readFromNBT(nbttagcompound.getCompoundTag("data"));
}
}
catch (Exception exception1)
{
exception1.printStackTrace();
}
}
if (worldsaveddata != null)
{
this.loadedDataMap.put(par2Str, worldsaveddata);
this.loadedDataList.add(worldsaveddata);
}
return worldsaveddata;
}
}
/**
* Assigns the given String id to the given MapDataBase, removing any existing ones of the same id.
*/
public void setData(String par1Str, WorldSavedData par2WorldSavedData)
{
if (par2WorldSavedData == null)
{
throw new RuntimeException("Can\'t set null data");
}
else
{
if (this.loadedDataMap.containsKey(par1Str))
{
this.loadedDataList.remove(this.loadedDataMap.remove(par1Str));
}
this.loadedDataMap.put(par1Str, par2WorldSavedData);
this.loadedDataList.add(par2WorldSavedData);
}
}
/**
* Saves all dirty loaded MapDataBases to disk.
*/
public void saveAllData()
{
for (int i = 0; i < this.loadedDataList.size(); ++i)
{
WorldSavedData worldsaveddata = (WorldSavedData)this.loadedDataList.get(i);
if (worldsaveddata.isDirty())
{
this.saveData(worldsaveddata);
worldsaveddata.setDirty(false);
}
}
}
/**
* Saves the given MapDataBase to disk.
*/
private void saveData(WorldSavedData par1WorldSavedData)
{
if (this.saveHandler != null)
{
try
{
File file1 = this.saveHandler.getMapFileFromName(par1WorldSavedData.mapName);
if (file1 != null)
{
NBTTagCompound nbttagcompound = new NBTTagCompound();
par1WorldSavedData.writeToNBT(nbttagcompound);
NBTTagCompound nbttagcompound1 = new NBTTagCompound();
nbttagcompound1.setCompoundTag("data", nbttagcompound);
FileOutputStream fileoutputstream = new FileOutputStream(file1);
CompressedStreamTools.writeCompressed(nbttagcompound1, fileoutputstream);
fileoutputstream.close();
}
}
catch (Exception exception)
{
exception.printStackTrace();
}
}
}
/**
* Loads the idCounts Map from the 'idcounts' file.
*/
private void loadIdCounts()
{
try
{
this.idCounts.clear();
if (this.saveHandler == null)
{
return;
}
File file1 = this.saveHandler.getMapFileFromName("idcounts");
if (file1 != null && file1.exists())
{
DataInputStream datainputstream = new DataInputStream(new FileInputStream(file1));
NBTTagCompound nbttagcompound = CompressedStreamTools.read(datainputstream);
datainputstream.close();
Iterator iterator = nbttagcompound.getTags().iterator();
while (iterator.hasNext())
{
NBTBase nbtbase = (NBTBase)iterator.next();
if (nbtbase instanceof NBTTagShort)
{
NBTTagShort nbttagshort = (NBTTagShort)nbtbase;
String s = nbttagshort.getName();
short short1 = nbttagshort.data;
this.idCounts.put(s, Short.valueOf(short1));
}
}
}
}
catch (Exception exception)
{
exception.printStackTrace();
}
}
/**
* Returns an unique new data id for the given prefix and saves the idCounts map to the 'idcounts' file.
*/
public int getUniqueDataId(String par1Str)
{
Short oshort = (Short)this.idCounts.get(par1Str);
if (oshort == null)
{
oshort = Short.valueOf((short)0);
}
else
{
oshort = Short.valueOf((short)(oshort.shortValue() + 1));
}
this.idCounts.put(par1Str, oshort);
if (this.saveHandler == null)
{
return oshort.shortValue();
}
else
{
try
{
File file1 = this.saveHandler.getMapFileFromName("idcounts");
if (file1 != null)
{
NBTTagCompound nbttagcompound = new NBTTagCompound();
Iterator iterator = this.idCounts.keySet().iterator();
while (iterator.hasNext())
{
String s1 = (String)iterator.next();
short short1 = ((Short)this.idCounts.get(s1)).shortValue();
nbttagcompound.setShort(s1, short1);
}
DataOutputStream dataoutputstream = new DataOutputStream(new FileOutputStream(file1));
CompressedStreamTools.write(nbttagcompound, dataoutputstream);
dataoutputstream.close();
}
}
catch (Exception exception)
{
exception.printStackTrace();
}
return oshort.shortValue();
}
}
}