net.minecraft.world.chunk.storage

Class RegionFile

java.lang.Object

net.minecraft.world.chunk.storage.RegionFile

All Implemented Interfaces:

java.lang.AutoCloseable

public class RegionFile
extends java.lang.Object
implements java.lang.AutoCloseable

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) class	RegionFile.ChunkBuffer
(package private) static interface	RegionFile.ICompleteCallback

Field Summary

Fields

Modifier and Type	Field and Description
private java.nio.IntBuffer	chunkTimestamps
private java.nio.channels.FileChannel	dataFile
private static org.apache.logging.log4j.Logger	field_227122_a_
private static java.nio.ByteBuffer	field_227123_b_
private java.nio.file.Path	field_227124_d_
private RegionFileVersion	field_227125_e_
private java.nio.ByteBuffer	field_227126_f_
private RegionBitmap	field_227128_i_
private java.nio.file.Path	filePath
private java.nio.IntBuffer	offsets

Constructor Summary

Constructors

Constructor and Description
RegionFile(java.io.File p_i225784_1_, java.io.File p_i225784_2_)
RegionFile(java.nio.file.Path p_i225785_1_, java.nio.file.Path p_i225785_2_, RegionFileVersion p_i225785_3_)

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	contains(ChunkPos p_222667_1_)
RegionFile	extractLargeChunks(ChunkPos pos) In 1.14, Forge added support for large chunks by allowing it to overflow the 255 section limit.
private int	forgeGetRealLength(int index, int offset)
java.io.DataOutputStream	func_222661_c(ChunkPos p_222661_1_)
boolean	func_222662_b(ChunkPos p_222662_1_)
java.io.DataInputStream	func_222666_a(ChunkPos pos)
private java.nio.ByteBuffer	func_227129_a_()
private static boolean	func_227130_a_(byte p_227130_0_)
private static int	func_227131_a_(int p_227131_0_)
private int	func_227132_a_(int p_227132_1_, int p_227132_2_)
private java.io.DataInputStream	func_227133_a_(ChunkPos p_227133_1_, byte p_227133_2_)
private java.io.DataInputStream	func_227134_a_(ChunkPos p_227134_1_, byte p_227134_2_, java.io.InputStream p_227134_3_)
protected void	func_227135_a_(ChunkPos p_227135_1_, java.nio.ByteBuffer p_227135_2_)
private static java.io.ByteArrayInputStream	func_227137_a_(java.nio.ByteBuffer p_227137_0_, int p_227137_1_)
private RegionFile.ICompleteCallback	func_227138_a_(java.nio.file.Path p_227138_1_, java.nio.ByteBuffer p_227138_2_)
private void	func_227140_b_()
private static byte	func_227141_b_(byte p_227141_0_)
private static int	func_227142_b_(int p_227142_0_)
private void	func_227143_c_()
private static int	func_227144_c_(int p_227144_0_)
private java.nio.file.Path	func_227145_e_(ChunkPos p_227145_1_)
private static int	getIndex(ChunkPos p_222668_0_)
private int	getOffset(ChunkPos p_222660_1_)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

field_227122_a_

private static final org.apache.logging.log4j.Logger field_227122_a_

field_227123_b_

private static final java.nio.ByteBuffer field_227123_b_

dataFile

private final java.nio.channels.FileChannel dataFile

field_227124_d_

private final java.nio.file.Path field_227124_d_

field_227125_e_

private final RegionFileVersion field_227125_e_

field_227126_f_

private final java.nio.ByteBuffer field_227126_f_

offsets

private final java.nio.IntBuffer offsets

chunkTimestamps

private final java.nio.IntBuffer chunkTimestamps

field_227128_i_

private final RegionBitmap field_227128_i_

filePath

private final java.nio.file.Path filePath

Constructor Detail

RegionFile

public RegionFile(java.io.File p_i225784_1_,
                  java.io.File p_i225784_2_)
           throws java.io.IOException

Throws:

java.io.IOException

RegionFile

public RegionFile(java.nio.file.Path p_i225785_1_,
                  java.nio.file.Path p_i225785_2_,
                  RegionFileVersion p_i225785_3_)
           throws java.io.IOException

Throws:

java.io.IOException

Method Detail

forgeGetRealLength

private int forgeGetRealLength(int index,
                               int offset)
                        throws java.io.IOException

Throws:

java.io.IOException

extractLargeChunks

public RegionFile extractLargeChunks(ChunkPos pos)
                              throws java.io.IOException

In 1.14, Forge added support for large chunks by allowing it to overflow the 255 section limit. Deferring the section size to the 'length' header in front of the chunk data. In 1.15, Mojang solved this issue by adding an external '.mcc' file for large chunks. Here, we attempt to detect and extract these large chunks from Forge's format to Vanilla's

Throws:

java.io.IOException

func_227145_e_

private java.nio.file.Path func_227145_e_(ChunkPos p_227145_1_)

func_222666_a

@Nullable
public java.io.DataInputStream func_222666_a(ChunkPos pos)
                                                throws java.io.IOException

Throws:

java.io.IOException

func_227130_a_

private static boolean func_227130_a_(byte p_227130_0_)

func_227141_b_

private static byte func_227141_b_(byte p_227141_0_)

func_227134_a_

@Nullable
private java.io.DataInputStream func_227134_a_(ChunkPos p_227134_1_,
                                                         byte p_227134_2_,
                                                         java.io.InputStream p_227134_3_)
                                                  throws java.io.IOException

Throws:

java.io.IOException

func_227133_a_

@Nullable
private java.io.DataInputStream func_227133_a_(ChunkPos p_227133_1_,
                                                         byte p_227133_2_)
                                                  throws java.io.IOException

Throws:

java.io.IOException

func_227137_a_

private static java.io.ByteArrayInputStream func_227137_a_(java.nio.ByteBuffer p_227137_0_,
                                                           int p_227137_1_)

func_227132_a_

private int func_227132_a_(int p_227132_1_,
                           int p_227132_2_)

func_227131_a_

private static int func_227131_a_(int p_227131_0_)

func_227142_b_

private static int func_227142_b_(int p_227142_0_)

func_227144_c_

private static int func_227144_c_(int p_227144_0_)

func_222662_b

public boolean func_222662_b(ChunkPos p_222662_1_)

func_222661_c

public java.io.DataOutputStream func_222661_c(ChunkPos p_222661_1_)
                                       throws java.io.IOException

Throws:

java.io.IOException

func_227135_a_

protected void func_227135_a_(ChunkPos p_227135_1_,
                              java.nio.ByteBuffer p_227135_2_)
                       throws java.io.IOException

Throws:

java.io.IOException

func_227129_a_

private java.nio.ByteBuffer func_227129_a_()

func_227138_a_

private RegionFile.ICompleteCallback func_227138_a_(java.nio.file.Path p_227138_1_,
                                                    java.nio.ByteBuffer p_227138_2_)
                                             throws java.io.IOException

Throws:

java.io.IOException

func_227140_b_

private void func_227140_b_()
                     throws java.io.IOException

Throws:

java.io.IOException

getOffset

private int getOffset(ChunkPos p_222660_1_)

contains

public boolean contains(ChunkPos p_222667_1_)

getIndex

private static int getIndex(ChunkPos p_222668_0_)

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException

func_227143_c_

private void func_227143_c_()
                     throws java.io.IOException

Throws:

java.io.IOException