oldloader.cpp File Reference

Functions for handling of TTO/TTD/TTDP savegames. More...

#include "../stdafx.h"
#include "../debug.h"
#include "../strings_type.h"
#include "../string_func.h"
#include "../settings_type.h"
#include "../fileio_func.h"
#include "saveload_internal.h"
#include "oldloader.h"
#include "table/strings.h"
#include "../safeguards.h"

Go to the source code of this file.

Typedefs
typedef bool	LoadOldMainProc(LoadgameState &ls)

Functions
static OldChunkType	GetOldChunkType (OldChunkType type)
static OldChunkType	GetOldChunkVarType (OldChunkType type)
static OldChunkType	GetOldChunkFileType (OldChunkType type)
static uint8_t	CalcOldVarLen (OldChunkType type)
	Return expected size in bytes of a OldChunkType.
static uint8_t	ReadByteFromFile (LoadgameState &ls)
	Reads a byte from a file (do not call yourself, use ReadByte())
uint8_t	ReadByte (LoadgameState &ls)
	Reads a byte from the buffer and decompress if needed.
bool	LoadChunk (LoadgameState &ls, void *base, const OldChunks *chunks)
	Loads a chunk from the old savegame.
static bool	VerifyOldNameChecksum (char *title, uint len)
	Verifies the title has a valid checksum.
static std::tuple< SavegameType, std::string >	DetermineOldSavegameTypeAndName (FileHandle &f)
bool	LoadOldSaveGame (std::string_view file)
std::string	GetOldSaveGameName (std::string_view file)

Variables
static const int	TTO_HEADER_SIZE = 41
static const int	TTD_HEADER_SIZE = 49
static const int	HEADER_CHECKSUM_SIZE = 2
	The size of the checksum in the name/header of the TTD/TTO savegames.
uint32_t	_bump_assert_value

Detailed Description

Functions for handling of TTO/TTD/TTDP savegames.

Definition in file oldloader.cpp.

Typedef Documentation

LoadOldMainProc

typedef bool LoadOldMainProc(LoadgameState &ls)

Definition at line 232 of file oldloader.cpp.

Function Documentation

CalcOldVarLen()

static uint8_t CalcOldVarLen ( OldChunkType  type )

inlinestatic

Return expected size in bytes of a OldChunkType.

Parameters

type	OldChunkType to get size of.

Returns

size of type in bytes.

Definition at line 39 of file oldloader.cpp.

Referenced by LoadChunk().

DetermineOldSavegameTypeAndName()

static std::tuple< SavegameType, std::string > DetermineOldSavegameTypeAndName ( FileHandle &  f )

static

Definition at line 213 of file oldloader.cpp.

GetOldChunkFileType()

static OldChunkType GetOldChunkFileType ( OldChunkType  type )

inlinestatic

Definition at line 32 of file oldloader.cpp.

GetOldChunkType()

static OldChunkType GetOldChunkType ( OldChunkType  type )

inlinestatic

Definition at line 30 of file oldloader.cpp.

GetOldChunkVarType()

static OldChunkType GetOldChunkVarType ( OldChunkType  type )

inlinestatic

Definition at line 31 of file oldloader.cpp.

GetOldSaveGameName()

std::string GetOldSaveGameName

(

std::string_view

file

)

Definition at line 285 of file oldloader.cpp.

LoadChunk()

bool LoadChunk	(	LoadgameState &	ls,
		void *	base,
		const OldChunks *	chunks
	)

Loads a chunk from the old savegame.

Definition at line 120 of file oldloader.cpp.

References _savegame_type, CalcOldVarLen(), Debug, GB(), OC_END, OC_TTD, OC_TTO, ReadByte(), SGT_TTO, and OldChunks::type.

LoadOldSaveGame()

bool LoadOldSaveGame

(

std::string_view

file

)

Definition at line 234 of file oldloader.cpp.

ReadByte()

uint8_t ReadByte

(

LoadgameState &

ls

)

Reads a byte from the buffer and decompress if needed.

Definition at line 86 of file oldloader.cpp.

References ReadByteFromFile().

Referenced by LoadChunk(), and LoadOldCustomString().

ReadByteFromFile()

static uint8_t ReadByteFromFile ( LoadgameState &  ls )

static

Reads a byte from a file (do not call yourself, use ReadByte())

Definition at line 59 of file oldloader.cpp.

References Debug.

Referenced by ReadByte().

VerifyOldNameChecksum()

static bool VerifyOldNameChecksum ( char *  title, uint  len  )

static

Verifies the title has a valid checksum.

Parameters

title	title and checksum
len	the length of the title to read/checksum

Returns

true iff the title is valid

Definition at line 197 of file oldloader.cpp.

References HEADER_CHECKSUM_SIZE, and SB().

Variable Documentation

_bump_assert_value

uint32_t _bump_assert_value

Definition at line 28 of file oldloader.cpp.

HEADER_CHECKSUM_SIZE

const int HEADER_CHECKSUM_SIZE = 2

static

The size of the checksum in the name/header of the TTD/TTO savegames.

Definition at line 26 of file oldloader.cpp.

Referenced by VerifyOldNameChecksum().

TTD_HEADER_SIZE

const int TTD_HEADER_SIZE = 49

static

Definition at line 24 of file oldloader.cpp.

TTO_HEADER_SIZE

const int TTO_HEADER_SIZE = 41

static

Definition at line 23 of file oldloader.cpp.