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Use a portable seek origin for save files

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This commit is contained in:
notmatthewbeshay 2026-03-10 10:32:58 +11:00
parent 45c22ab6cc
commit 83ba8d8384
11 changed files with 58 additions and 37 deletions
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4
Minecraft.Client/MinecraftServer.cpp
View file

@ -543,7 +543,7 @@ bool MinecraftServer::loadLevel(LevelStorageSource *storageSource, const std::ws
ba_gameRules.length = fe->getFileSize();
ba_gameRules.data = new BYTE[ ba_gameRules.length ];
csf->setFilePointer(fe,0,NULL,FILE_BEGIN);
csf->setFilePointer(fe, 0, SaveFileSeekOrigin::Begin);
csf->readFile(fe, ba_gameRules.data, ba_gameRules.length, &numberOfBytesRead);
assert(numberOfBytesRead == ba_gameRules.length);
@ -809,7 +809,7 @@ void MinecraftServer::saveGameRules()
{
ConsoleSaveFile *csf = getLevel(0)->getLevelStorage()->getSaveFile();
FileEntry *fe = csf->createFile(ConsoleSavePath(GAME_RULE_SAVENAME));
csf->setFilePointer(fe, 0, NULL, FILE_BEGIN);
csf->setFilePointer(fe, 0, SaveFileSeekOrigin::Begin);
unsigned int length;
csf->writeFile(fe, ba.data, ba.length, &length );

2
Minecraft.Client/Platform/Common/XUI/XUI_DebugOverlay.cpp
View file

@ -308,7 +308,7 @@ void CScene_DebugOverlay::SaveLimitedFile(int chunkRadius)
FileEntry *origFileEntry = currentSave->createFile( std::wstring( L"level.dat" ) );
byteArray levelData( origFileEntry->getFileSize() );
unsigned int bytesRead;
currentSave->setFilePointer(origFileEntry,0,NULL,FILE_BEGIN);
currentSave->setFilePointer(origFileEntry, 0, SaveFileSeekOrigin::Begin);
currentSave->readFile(
origFileEntry,
levelData.data, // data buffer

9
Minecraft.World/IO/Files/ConsoleSaveFile.h
View file

@ -3,6 +3,13 @@
#include "FileHeader.h"
#include "ConsoleSavePath.h"
enum class SaveFileSeekOrigin
{
Begin,
Current,
End
};
class ConsoleSaveFile
{
public:
@ -10,7 +17,7 @@ public:
virtual FileEntry *createFile( const ConsoleSavePath &fileName ) = 0;
virtual void deleteFile( FileEntry *file ) = 0;
virtual void setFilePointer( FileEntry *file,LONG lDistanceToMove, PLONG lpDistanceToMoveHigh,DWORD dwMoveMethod) = 0;
virtual void setFilePointer( FileEntry *file, unsigned int distanceToMove, SaveFileSeekOrigin seekOrigin ) = 0;
virtual bool writeFile( FileEntry *file, const void *lpBuffer, unsigned int nNumberOfBytesToWrite, unsigned int *lpNumberOfBytesWritten) = 0;
virtual bool zeroFile(FileEntry *file, unsigned int nNumberOfBytesToWrite, unsigned int *lpNumberOfBytesWritten) = 0;
virtual bool readFile( FileEntry *file, void *lpBuffer, unsigned int nNumberOfBytesToRead, unsigned int *lpNumberOfBytesRead ) = 0;

4
Minecraft.World/IO/Files/ConsoleSaveFileInputStream.cpp
View file

@ -9,7 +9,7 @@ ConsoleSaveFileInputStream::ConsoleSaveFileInputStream(ConsoleSaveFile *saveFile
m_saveFile = saveFile;
m_file = m_saveFile->createFile( file );
m_saveFile->setFilePointer( m_file, 0, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( m_file, 0, SaveFileSeekOrigin::Begin );
}
ConsoleSaveFileInputStream::ConsoleSaveFileInputStream(ConsoleSaveFile *saveFile, FileEntry *file)
@ -17,7 +17,7 @@ ConsoleSaveFileInputStream::ConsoleSaveFileInputStream(ConsoleSaveFile *saveFile
m_saveFile = saveFile;
m_file = file;
m_saveFile->setFilePointer( m_file, 0, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( m_file, 0, SaveFileSeekOrigin::Begin );
}
//Reads a byte of data from this input stream. This method blocks if no input is yet available.

17
Minecraft.World/IO/Files/ConsoleSaveFileOriginal.cpp
View file

@ -299,15 +299,22 @@ void ConsoleSaveFileOriginal::deleteFile( FileEntry *file )
ReleaseSaveAccess();
}
void ConsoleSaveFileOriginal::setFilePointer(FileEntry *file,LONG lDistanceToMove,PLONG lpDistanceToMoveHigh,DWORD dwMoveMethod)
void ConsoleSaveFileOriginal::setFilePointer(FileEntry *file, unsigned int distanceToMove, SaveFileSeekOrigin seekOrigin)
{
LockSaveAccess();
file->currentFilePointer = file->data.startOffset + lDistanceToMove;
if( dwMoveMethod == FILE_END)
switch( seekOrigin )
{
file->currentFilePointer += file->getFileSize();
case SaveFileSeekOrigin::Current:
file->currentFilePointer += distanceToMove;
break;
case SaveFileSeekOrigin::End:
file->currentFilePointer = file->data.startOffset + file->getFileSize() + distanceToMove;
break;
case SaveFileSeekOrigin::Begin:
default:
file->currentFilePointer = file->data.startOffset + distanceToMove;
break;
}
ReleaseSaveAccess();

2
Minecraft.World/IO/Files/ConsoleSaveFileOriginal.h
View file

@ -43,7 +43,7 @@ public:
virtual FileEntry *createFile( const ConsoleSavePath &fileName );
virtual void deleteFile( FileEntry *file );
virtual void setFilePointer(FileEntry *file,LONG lDistanceToMove,PLONG lpDistanceToMoveHigh,DWORD dwMoveMethod);
virtual void setFilePointer(FileEntry *file, unsigned int distanceToMove, SaveFileSeekOrigin seekOrigin);
virtual bool writeFile( FileEntry *file, const void *lpBuffer, unsigned int nNumberOfBytesToWrite, unsigned int *lpNumberOfBytesWritten );
virtual bool zeroFile(FileEntry *file, unsigned int nNumberOfBytesToWrite, unsigned int *lpNumberOfBytesWritten);
virtual bool readFile( FileEntry *file, void *lpBuffer, unsigned int nNumberOfBytesToRead, unsigned int *lpNumberOfBytesRead );

4
Minecraft.World/IO/Files/ConsoleSaveFileOutputStream.cpp
View file

@ -19,7 +19,7 @@ ConsoleSaveFileOutputStream::ConsoleSaveFileOutputStream(ConsoleSaveFile *saveFi
m_file = m_saveFile->createFile(file);
m_saveFile->setFilePointer( m_file, 0, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( m_file, 0, SaveFileSeekOrigin::Begin );
}
ConsoleSaveFileOutputStream::ConsoleSaveFileOutputStream(ConsoleSaveFile *saveFile, FileEntry *file)
@ -28,7 +28,7 @@ ConsoleSaveFileOutputStream::ConsoleSaveFileOutputStream(ConsoleSaveFile *saveFi
m_file = file;
m_saveFile->setFilePointer( m_file, 0, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( m_file, 0, SaveFileSeekOrigin::Begin );
}
//Writes the specified byte to this file output stream. Implements the write method of OutputStream.

25
Minecraft.World/IO/Files/ConsoleSaveFileSplit.cpp
View file

@ -423,7 +423,7 @@ ConsoleSaveFileSplit::ConsoleSaveFileSplit(ConsoleSaveFile *sourceSave, bool alr
for(AUTO_VAR(it, sourceFiles->begin()); it != sourceFiles->end(); ++it)
{
FileEntry *sourceEntry = *it;
sourceSave->setFilePointer(sourceEntry,0,NULL,FILE_BEGIN);
sourceSave->setFilePointer(sourceEntry, 0, SaveFileSeekOrigin::Begin);
FileEntry *targetEntry = createFile(ConsoleSavePath(sourceEntry->data.filename));
@ -687,22 +687,29 @@ void ConsoleSaveFileSplit::deleteFile( FileEntry *file )
ReleaseSaveAccess();
}
void ConsoleSaveFileSplit::setFilePointer(FileEntry *file,LONG lDistanceToMove,PLONG lpDistanceToMoveHigh,DWORD dwMoveMethod)
void ConsoleSaveFileSplit::setFilePointer(FileEntry *file, unsigned int distanceToMove, SaveFileSeekOrigin seekOrigin)
{
LockSaveAccess();
if( file->isRegionFile() )
if( seekOrigin == SaveFileSeekOrigin::Current )
{
file->currentFilePointer = lDistanceToMove;
file->currentFilePointer += distanceToMove;
}
else
{
file->currentFilePointer = file->data.startOffset + lDistanceToMove;
}
if( file->isRegionFile() )
{
file->currentFilePointer = distanceToMove;
}
else
{
file->currentFilePointer = file->data.startOffset + distanceToMove;
}
if( dwMoveMethod == FILE_END)
{
file->currentFilePointer += file->getFileSize();
if( seekOrigin == SaveFileSeekOrigin::End )
{
file->currentFilePointer += file->getFileSize();
}
}
ReleaseSaveAccess();

2
Minecraft.World/IO/Files/ConsoleSaveFileSplit.h
View file

@ -95,7 +95,7 @@ public:
virtual FileEntry *createFile( const ConsoleSavePath &fileName );
virtual void deleteFile( FileEntry *file );
virtual void setFilePointer(FileEntry *file,LONG lDistanceToMove,PLONG lpDistanceToMoveHigh,DWORD dwMoveMethod);
virtual void setFilePointer(FileEntry *file, unsigned int distanceToMove, SaveFileSeekOrigin seekOrigin);
virtual bool writeFile( FileEntry *file, const void *lpBuffer, unsigned int nNumberOfBytesToWrite, unsigned int *lpNumberOfBytesWritten );
virtual bool zeroFile(FileEntry *file, unsigned int nNumberOfBytesToWrite, unsigned int *lpNumberOfBytesWritten);
virtual bool readFile( FileEntry *file, void *lpBuffer, unsigned int nNumberOfBytesToRead, unsigned int *lpNumberOfBytesRead );

4
Minecraft.World/Level/Storage/DirectoryLevelStorage.cpp
View file

@ -270,7 +270,7 @@ LevelData *DirectoryLevelStorage::prepareLevel()
else
#endif
{
getSaveFile()->setFilePointer(fileEntry,0,NULL, FILE_BEGIN);
getSaveFile()->setFilePointer(fileEntry, 0, SaveFileSeekOrigin::Begin);
#ifdef _LARGE_WORLDS
byteArray data(fileEntry->getFileSize());
@ -683,7 +683,7 @@ void DirectoryLevelStorage::saveMapIdLookup()
{
unsigned int NumberOfBytesWritten;
FileEntry *fileEntry = m_saveFile->createFile(file);
m_saveFile->setFilePointer(fileEntry,0,NULL, FILE_BEGIN);
m_saveFile->setFilePointer(fileEntry, 0, SaveFileSeekOrigin::Begin);
#ifdef _LARGE_WORLDS
ByteArrayOutputStream baos;

22
Minecraft.World/Level/Storage/RegionFile.cpp
View file

@ -39,7 +39,7 @@ RegionFile::RegionFile(ConsoleSaveFile *saveFile, File *path)
*/
fileEntry = m_saveFile->createFile( fileName->getName() );
m_saveFile->setFilePointer( fileEntry, 0, NULL, FILE_END );
m_saveFile->setFilePointer( fileEntry, 0, SaveFileSeekOrigin::End );
if ( fileEntry->getFileSize() < SECTOR_BYTES)
{
@ -91,7 +91,7 @@ RegionFile::RegionFile(ConsoleSaveFile *saveFile, File *path)
sectorFree->at(0) = false; // chunk offset table
sectorFree->at(1) = false; // for the last modified info
m_saveFile->setFilePointer( fileEntry, 0, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, 0, SaveFileSeekOrigin::Begin );
for (int i = 0; i < SECTOR_INTS; ++i)
{
unsigned int offset = 0;
@ -139,11 +139,11 @@ void RegionFile::writeAllOffsets() // used for the file ConsoleSaveFile conversi
m_saveFile->LockSaveAccess();
unsigned int numberOfBytesWritten = 0;
m_saveFile->setFilePointer( fileEntry, 0, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, 0, SaveFileSeekOrigin::Begin );
m_saveFile->writeFile(fileEntry,offsets, SECTOR_BYTES ,&numberOfBytesWritten);
numberOfBytesWritten = 0;
m_saveFile->setFilePointer( fileEntry, SECTOR_BYTES, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, SECTOR_BYTES, SaveFileSeekOrigin::Begin );
m_saveFile->writeFile(fileEntry, chunkTimestamps, SECTOR_BYTES, &numberOfBytesWritten);
m_saveFile->ReleaseSaveAccess();
@ -199,7 +199,7 @@ DataInputStream *RegionFile::getChunkDataInputStream(int x, int z) // TODO - was
m_saveFile->LockSaveAccess();
//SetFilePointer(file,sectorNumber * SECTOR_BYTES,0,FILE_BEGIN);
m_saveFile->setFilePointer( fileEntry, sectorNumber * SECTOR_BYTES, NULL, FILE_BEGIN);
m_saveFile->setFilePointer( fileEntry, sectorNumber * SECTOR_BYTES, SaveFileSeekOrigin::Begin);
unsigned int length;
unsigned int decompLength;
@ -373,7 +373,7 @@ void RegionFile::write(int x, int z, uint8_t *data, int length) // TODO - was s
*/
// debug("SAVE", x, z, length, "grow");
//SetFilePointer(file,0,0,FILE_END);
m_saveFile->setFilePointer( fileEntry, 0, NULL, FILE_END );
m_saveFile->setFilePointer( fileEntry, 0, SaveFileSeekOrigin::End );
sectorNumber = (int)sectorFree->size();
#ifndef _CONTENT_PACAKGE
@ -407,7 +407,7 @@ void RegionFile::write(int sectorNumber, uint8_t *data, int length, unsigned int
{
unsigned int numberOfBytesWritten = 0;
//SetFilePointer(file,sectorNumber * SECTOR_BYTES,0,FILE_BEGIN);
m_saveFile->setFilePointer( fileEntry, sectorNumber * SECTOR_BYTES, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, sectorNumber * SECTOR_BYTES, SaveFileSeekOrigin::Begin );
// 4J - this differs a bit from the java file format. Java has length stored as an int, then a type as a byte, then length-1 bytes of data
// We store length and decompression length as ints, then length bytes of xbox LZX compressed data
@ -426,7 +426,7 @@ void RegionFile::zero(int sectorNumber, int length)
{
unsigned int numberOfBytesWritten = 0;
//SetFilePointer(file,sectorNumber * SECTOR_BYTES,0,FILE_BEGIN);
m_saveFile->setFilePointer( fileEntry, sectorNumber * SECTOR_BYTES, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, sectorNumber * SECTOR_BYTES, SaveFileSeekOrigin::Begin );
m_saveFile->zeroFile( fileEntry, length, &numberOfBytesWritten );
}
@ -449,7 +449,7 @@ bool RegionFile::hasChunk(int x, int z)
// 4J added - write the initial two sectors that used to be written in the ctor when the file was empty
void RegionFile::insertInitialSectors()
{
m_saveFile->setFilePointer( fileEntry, 0, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, 0, SaveFileSeekOrigin::Begin );
unsigned int numberOfBytesWritten = 0;
uint8_t zeroBytes[ SECTOR_BYTES ];
ZeroMemory(zeroBytes, SECTOR_BYTES);
@ -472,7 +472,7 @@ void RegionFile::setOffset(int x, int z, int offset)
unsigned int numberOfBytesWritten = 0;
offsets[x + z * 32] = offset;
m_saveFile->setFilePointer( fileEntry, (x + z * 32) * 4, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, (x + z * 32) * 4, SaveFileSeekOrigin::Begin );
m_saveFile->writeFile(fileEntry,&offset,4,&numberOfBytesWritten);
}
@ -486,7 +486,7 @@ void RegionFile::setTimestamp(int x, int z, int value)
unsigned int numberOfBytesWritten = 0;
chunkTimestamps[x + z * 32] = value;
m_saveFile->setFilePointer( fileEntry, SECTOR_BYTES + (x + z * 32) * 4, NULL, FILE_BEGIN );
m_saveFile->setFilePointer( fileEntry, SECTOR_BYTES + (x + z * 32) * 4, SaveFileSeekOrigin::Begin );
m_saveFile->writeFile(fileEntry,&value,4,&numberOfBytesWritten);
}