Finalize directory structure

Remove unrelated classes from Card.{cpp,hpp}
This commit is contained in:
Phillip Stephens 2016-06-28 11:53:37 -07:00
parent 4cd0330e22
commit 2a9c18534a
15 changed files with 487 additions and 420 deletions

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@ -11,11 +11,15 @@ include_directories(include)
set(KABUFUDA_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include CACHE PATH "kabufuda include path" FORCE)
add_library(kabufuda STATIC
include/kabufuda/Card.hpp lib/Card.cpp
include/kabufuda/Util.hpp lib/Util.cpp
include/kabufuda/SRAM.hpp lib/SRAM.cpp
include/kabufuda/WideStringConvert.hpp lib/WideStringConvert.cpp)
include/kabufuda/Constants.hpp
include/kabufuda/BlockAllocationTable.hpp lib/kabufuda/BlockAllocationTable.cpp
include/kabufuda/Card.hpp lib/kabufuda/Card.cpp
include/kabufuda/Directory.hpp lib/kabufuda/Directory.cpp
include/kabufuda/File.hpp lib/kabufuda/File.cpp
include/kabufuda/Util.hpp lib/kabufuda/Util.cpp
include/kabufuda/SRAM.hpp lib/kabufuda/SRAM.cpp
include/kabufuda/WideStringConvert.hpp lib/kabufuda/WideStringConvert.cpp)
if (NOT TARGET urde)
if (NOT TARGET hecl)
add_subdirectory(test)
endif()

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@ -0,0 +1,42 @@
#ifndef __KABU_BLOCKALLOCATIONATABLE_HPP__
#define __KABU_BLOCKALLOCATIONATABLE_HPP__
#include "Constants.hpp"
namespace kabufuda
{
class BlockAllocationTable
{
friend class Card;
#pragma pack(push, 4)
union
{
struct
{
uint16_t m_checksum;
uint16_t m_checksumInv;
uint16_t m_updateCounter;
uint16_t m_freeBlocks;
uint16_t m_lastAllocated;
uint16_t m_map[0xFFB];
};
uint8_t __raw[BlockSize];
};
#pragma pack(pop)
void swapEndian();
void updateChecksum();
bool valid() const;
public:
explicit BlockAllocationTable(uint32_t blockCount = (uint32_t(ECardSize::Card2043Mb) * MbitToBlocks));
BlockAllocationTable(uint8_t data[BlockSize]);
~BlockAllocationTable() {}
uint16_t getNextBlock(uint16_t block) const;
uint16_t nextFreeBlock(uint16_t maxBlock, uint16_t startingBlock) const;
bool clear(uint16_t first, uint16_t count);
uint16_t allocateBlocks(uint16_t count, uint16_t maxBlocks);
};
}
#endif // __KABU_BLOCKALLOCATIONATABLE_HPP__

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@ -1,109 +1,17 @@
#ifndef __CARD_HPP__
#define __CARD_HPP__
#ifndef __KABU_CARD_HPP__
#define __KABU_CARD_HPP__
#include "BlockAllocationTable.hpp"
#include "Directory.hpp"
#include "File.hpp"
#include "Util.hpp"
#include <string>
#include <vector>
#include <memory>
#include "Util.hpp"
namespace kabufuda
{
uint32_t constexpr BlockSize = 0x2000;
uint32_t constexpr MaxFiles = 127;
uint32_t constexpr FSTBlocks = 5;
uint32_t constexpr MbitToBlocks = 0x10;
uint32_t constexpr BATSize = 0xFFB;
/**
* @brief The EPermissions enum
*/
enum class EPermissions : uint8_t
{
};
/**
* @brief The EBannerFlags enum
*/
enum class EBannerFlags : uint8_t
{
};
enum class SeekOrigin
{
Begin,
Current,
End
};
/**
* @brief The EDeviceId enum
*/
enum class EDeviceId : uint16_t
{
SlotA,
SlotB
};
/**
* @brief The ECardSize enum
*/
enum class ECardSize : uint16_t
{
Card59Mb = 0x04,
Card123Mb = 0x08,
Card251Mb = 0x10,
Card507Mb = 0x20,
Card1019Mb = 0x40,
Card2043Mb = 0x80
};
/**
* @brief The EEncoding enum
*/
enum class EEncoding : uint16_t
{
ASCII, /**< Standard ASCII Encoding */
SJIS /**< SJIS Encoding for japanese */
};
class File
{
friend class FileHandle;
friend class Directory;
friend class Card;
#pragma pack(push, 4)
union
{
struct
{
uint8_t m_id[4];
uint8_t m_maker[2];
uint8_t m_reserved;
uint8_t m_bannerFlags;
char m_filename[0x20];
uint32_t m_modifiedTime;
uint32_t m_imageOffset;
uint16_t m_iconFmt;
uint16_t m_animSpeed;
uint8_t m_permissions;
int8_t m_copyCounter;
uint16_t m_firstBlock;
uint16_t m_blockCount;
uint16_t m_reserved2;
uint32_t m_commentAddr;
};
uint8_t __raw[0x40];
};
#pragma pack(pop)
void swapEndian();
public:
File();
File(char data[0x40]);
File(const char* filename);
~File() {}
};
class IFileHandle
{
@ -111,73 +19,6 @@ public:
virtual ~IFileHandle();
};
class BlockAllocationTable
{
friend class Card;
#pragma pack(push, 4)
union
{
struct
{
uint16_t m_checksum;
uint16_t m_checksumInv;
uint16_t m_updateCounter;
uint16_t m_freeBlocks;
uint16_t m_lastAllocated;
uint16_t m_map[0xFFB];
};
uint8_t __raw[BlockSize];
};
#pragma pack(pop)
void swapEndian();
void updateChecksum();
bool valid() const;
public:
explicit BlockAllocationTable(uint32_t blockCount = (uint32_t(ECardSize::Card2043Mb) * MbitToBlocks));
BlockAllocationTable(uint8_t data[BlockSize]);
~BlockAllocationTable() {}
uint16_t getNextBlock(uint16_t block) const;
uint16_t nextFreeBlock(uint16_t maxBlock, uint16_t startingBlock) const;
bool clear(uint16_t first, uint16_t count);
uint16_t allocateBlocks(uint16_t count, uint16_t maxBlocks);
};
class Directory
{
friend class Card;
#pragma pack(push, 4)
union
{
struct
{
File m_files[MaxFiles];
uint8_t __padding[0x3a];
uint16_t m_updateCounter;
uint16_t m_checksum;
uint16_t m_checksumInv;
};
uint8_t __raw[BlockSize];
};
#pragma pack(pop)
void swapEndian();
void updateChecksum();
bool valid() const;
public:
Directory();
Directory(uint8_t data[BlockSize]);
Directory(const Directory& other);
void operator=(const Directory& other);
~Directory() {}
File* getFirstFreeFile(const char* game, const char* maker, const char* filename);
File* getFile(const char* game, const char* maker, const char* filename);
};
class Card
{
#pragma pack(push, 4)
@ -293,15 +134,6 @@ public:
operator bool() const;
};
/**
* @brief calculateChecksum
* @param data
* @param len
* @param checksum
* @param checksumInv
*/
void calculateChecksumBE(const uint16_t* data, size_t len, uint16_t* checksum, uint16_t* checksumInv);
}
#endif // __CARD_HPP__

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@ -0,0 +1,66 @@
#ifndef __KABU_CONSTANTS_HPP__
#define __KABU_CONSTANTS_HPP__
#include <stdint.h>
namespace kabufuda
{
uint32_t constexpr BlockSize = 0x2000;
uint32_t constexpr MaxFiles = 127;
uint32_t constexpr FSTBlocks = 5;
uint32_t constexpr MbitToBlocks = 0x10;
uint32_t constexpr BATSize = 0xFFB;
/**
* @brief The EPermissions enum
*/
enum class EPermissions : uint8_t
{
};
/**
* @brief The EBannerFlags enum
*/
enum class EBannerFlags : uint8_t
{
};
enum class SeekOrigin
{
Begin,
Current,
End
};
/**
* @brief The EDeviceId enum
*/
enum class EDeviceId : uint16_t
{
SlotA,
SlotB
};
/**
* @brief The ECardSize enum
*/
enum class ECardSize : uint16_t
{
Card59Mb = 0x04,
Card123Mb = 0x08,
Card251Mb = 0x10,
Card507Mb = 0x20,
Card1019Mb = 0x40,
Card2043Mb = 0x80
};
/**
* @brief The EEncoding enum
*/
enum class EEncoding : uint16_t
{
ASCII, /**< Standard ASCII Encoding */
SJIS /**< SJIS Encoding for japanese */
};
}
#endif // __KABU_CONSTANTS_HPP__

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@ -0,0 +1,42 @@
#ifndef __KABU_DIRECTORY_HPP__
#define __KABU_DIRECTORY_HPP__
#include "File.hpp"
namespace kabufuda
{
class Directory
{
friend class Card;
#pragma pack(push, 4)
union
{
struct
{
File m_files[MaxFiles];
uint8_t __padding[0x3a];
uint16_t m_updateCounter;
uint16_t m_checksum;
uint16_t m_checksumInv;
};
uint8_t __raw[BlockSize];
};
#pragma pack(pop)
void swapEndian();
void updateChecksum();
bool valid() const;
public:
Directory();
Directory(uint8_t data[BlockSize]);
Directory(const Directory& other);
void operator=(const Directory& other);
~Directory() {}
File* getFirstFreeFile(const char* game, const char* maker, const char* filename);
File* getFile(const char* game, const char* maker, const char* filename);
};
}
#endif // __KABU_DIRECTORY_HPP__

49
include/kabufuda/File.hpp Normal file
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@ -0,0 +1,49 @@
#ifndef __KABU_FILE_HPP__
#define __KABU_FILE_HPP__
#include "Constants.hpp"
namespace kabufuda
{
class File
{
friend class IFileHandle;
friend class Directory;
friend class Card;
#pragma pack(push, 4)
union
{
struct
{
uint8_t m_id[4];
uint8_t m_maker[2];
uint8_t m_reserved;
uint8_t m_bannerFlags;
char m_filename[0x20];
uint32_t m_modifiedTime;
uint32_t m_imageOffset;
uint16_t m_iconFmt;
uint16_t m_animSpeed;
uint8_t m_permissions;
int8_t m_copyCounter;
uint16_t m_firstBlock;
uint16_t m_blockCount;
uint16_t m_reserved2;
uint32_t m_commentAddr;
};
uint8_t __raw[0x40];
};
#pragma pack(pop)
void swapEndian();
public:
File();
File(char data[0x40]);
File(const char* filename);
~File() {}
};
}
#endif // __KABU_FILE_HPP__

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@ -1,5 +1,5 @@
#ifndef __UTIL_HPP__
#define __UTIL_HPP__
#ifndef __KABU_UTIL_HPP__
#define __KABU_UTIL_HPP__
#ifndef _WIN32
#include <stdlib.h>
@ -305,6 +305,15 @@ static inline int Stat(const SystemChar* path, Sstat* statOut)
return stat(path, statOut);
#endif
}
/**
* @brief calculateChecksum
* @param data
* @param len
* @param checksum
* @param checksumInv
*/
void calculateChecksumBE(const uint16_t* data, size_t len, uint16_t* checksum, uint16_t* checksumInv);
}
#endif // __UTIL_HPP__
#endif // __KABU_UTIL_HPP__

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@ -1,3 +1,6 @@
#ifndef __KABU_WIDESTRINGCONVERT_HPP__
#define __KABU_WIDESTRINGCONVERT_HPP__
#include <string>
namespace kabufuda
@ -5,3 +8,5 @@ namespace kabufuda
std::string WideToUTF8(const std::wstring& src);
std::wstring UTF8ToWide(const std::string& src);
}
#endif // __KABU_WIDESTRINGCONVERT_HPP__

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@ -0,0 +1,113 @@
#include "kabufuda/BlockAllocationTable.hpp"
#include "kabufuda/Util.hpp"
#include <vector>
namespace kabufuda
{
void BlockAllocationTable::swapEndian()
{
m_checksum = SBig(m_checksum);
m_checksumInv = SBig(m_checksumInv);
m_updateCounter = SBig(m_updateCounter);
m_freeBlocks = SBig(m_freeBlocks);
m_lastAllocated = SBig(m_lastAllocated);
std::for_each(std::begin(m_map), std::end(m_map), [](uint16_t& val){
val = SBig(val);
});
}
void BlockAllocationTable::updateChecksum()
{
swapEndian();
calculateChecksumBE(reinterpret_cast<uint16_t*>(__raw + 4), 0xFFE, &m_checksum, &m_checksumInv);
swapEndian();
}
bool BlockAllocationTable::valid() const
{
uint16_t ckSum, ckSumInv;
BlockAllocationTable tmp = *this;
tmp.swapEndian();
calculateChecksumBE(reinterpret_cast<const uint16_t*>(tmp.__raw + 4), 0xFFE, &ckSum, &ckSumInv);
return (SBig(ckSum) == m_checksum && SBig(ckSumInv) == m_checksumInv);
}
BlockAllocationTable::BlockAllocationTable(uint32_t blockCount)
{
memset(__raw, 0, BlockSize);
m_freeBlocks = uint16_t(blockCount - FSTBlocks);
m_lastAllocated = 4;
updateChecksum();
}
uint16_t BlockAllocationTable::getNextBlock(uint16_t block) const
{
if ((block < FSTBlocks) || (block > (BATSize - FSTBlocks)))
return 0;
return m_map[block - FSTBlocks];
}
uint16_t BlockAllocationTable::nextFreeBlock(uint16_t maxBlock, uint16_t startingBlock) const
{
if (m_freeBlocks > 0)
{
maxBlock = std::min(maxBlock, uint16_t(BATSize));
for (uint16_t i = startingBlock; i < maxBlock; ++i)
if (m_map[i - FSTBlocks] == 0)
return i;
for (uint16_t i = FSTBlocks; i < startingBlock; ++i)
if (m_map[i - FSTBlocks] == 0)
return i;
}
return 0xFFFF;
}
bool BlockAllocationTable::clear(uint16_t first, uint16_t count)
{
std::vector<uint16_t> blocks;
while (first != 0xFFFF && first != 0)
{
blocks.push_back(first);
first = getNextBlock(first);
}
if (first > 0)
{
size_t length = blocks.size();
if (length != count)
return false;
for (size_t i= 0 ; i < length ; ++i)
m_map[blocks.at(i) - FSTBlocks] = 0;
m_freeBlocks += count;
return true;
}
return false;
}
uint16_t BlockAllocationTable::allocateBlocks(uint16_t count, uint16_t maxBlocks)
{
uint16_t firstBlock = nextFreeBlock(maxBlocks - FSTBlocks, m_lastAllocated + 1);
uint16_t freeBlock = firstBlock;
if (freeBlock != 0xFFFF)
{
uint16_t tmpCount = count;
while ((count--) > 0)
{
m_map[(freeBlock - FSTBlocks)] = 0xFFFF;
if (count != 0)
{
m_map[(freeBlock - FSTBlocks)] = nextFreeBlock(maxBlocks - FSTBlocks, m_lastAllocated + 1);
freeBlock = m_map[(freeBlock - FSTBlocks)];
}
m_lastAllocated = freeBlock;
}
m_freeBlocks -= tmpCount;
}
return firstBlock;
}
}

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@ -493,241 +493,4 @@ Card::operator bool() const
return true;
}
File::File(char data[])
{
memcpy(__raw, data, 0x40);
}
File::File(const char* filename)
{
memset(__raw, 0xFF, 0x40);
memset(m_filename, 0, 32);
size_t len = strlen(filename);
len = std::min<size_t>(len, 32);
memcpy(m_filename, filename, len);
}
void File::swapEndian()
{
m_modifiedTime = SBig(m_modifiedTime);
m_imageOffset = SBig(m_imageOffset);
m_iconFmt = SBig(m_iconFmt);
m_animSpeed = SBig(m_animSpeed);
m_firstBlock = SBig(m_firstBlock);
m_blockCount = SBig(m_blockCount);
m_reserved2 = SBig(m_reserved2);
m_commentAddr = SBig(m_commentAddr);
}
File::File()
{
memset(__raw, 0xFF, 0x40);
}
void BlockAllocationTable::swapEndian()
{
m_checksum = SBig(m_checksum);
m_checksumInv = SBig(m_checksumInv);
m_updateCounter = SBig(m_updateCounter);
m_freeBlocks = SBig(m_freeBlocks);
m_lastAllocated = SBig(m_lastAllocated);
std::for_each(std::begin(m_map), std::end(m_map), [](uint16_t& val){
val = SBig(val);
});
}
void BlockAllocationTable::updateChecksum()
{
swapEndian();
calculateChecksumBE(reinterpret_cast<uint16_t*>(__raw + 4), 0xFFE, &m_checksum, &m_checksumInv);
swapEndian();
}
bool BlockAllocationTable::valid() const
{
uint16_t ckSum, ckSumInv;
BlockAllocationTable tmp = *this;
tmp.swapEndian();
calculateChecksumBE(reinterpret_cast<const uint16_t*>(tmp.__raw + 4), 0xFFE, &ckSum, &ckSumInv);
return (SBig(ckSum) == m_checksum && SBig(ckSumInv) == m_checksumInv);
}
BlockAllocationTable::BlockAllocationTable(uint32_t blockCount)
{
memset(__raw, 0, BlockSize);
m_freeBlocks = uint16_t(blockCount - FSTBlocks);
m_lastAllocated = 4;
updateChecksum();
}
uint16_t BlockAllocationTable::getNextBlock(uint16_t block) const
{
if ((block < FSTBlocks) || (block > (BATSize - FSTBlocks)))
return 0;
return m_map[block - FSTBlocks];
}
uint16_t BlockAllocationTable::nextFreeBlock(uint16_t maxBlock, uint16_t startingBlock) const
{
if (m_freeBlocks > 0)
{
maxBlock = std::min(maxBlock, uint16_t(BATSize));
for (uint16_t i = startingBlock; i < maxBlock; ++i)
if (m_map[i - FSTBlocks] == 0)
return i;
for (uint16_t i = FSTBlocks; i < startingBlock; ++i)
if (m_map[i - FSTBlocks] == 0)
return i;
}
return 0xFFFF;
}
bool BlockAllocationTable::clear(uint16_t first, uint16_t count)
{
std::vector<uint16_t> blocks;
while (first != 0xFFFF && first != 0)
{
blocks.push_back(first);
first = getNextBlock(first);
}
if (first > 0)
{
size_t length = blocks.size();
if (length != count)
return false;
for (size_t i= 0 ; i < length ; ++i)
m_map[blocks.at(i) - FSTBlocks] = 0;
m_freeBlocks += count;
return true;
}
return false;
}
uint16_t BlockAllocationTable::allocateBlocks(uint16_t count, uint16_t maxBlocks)
{
uint16_t firstBlock = nextFreeBlock(maxBlocks - FSTBlocks, m_lastAllocated + 1);
uint16_t freeBlock = firstBlock;
if (freeBlock != 0xFFFF)
{
uint16_t tmpCount = count;
while ((count--) > 0)
{
m_map[(freeBlock - FSTBlocks)] = 0xFFFF;
if (count != 0)
{
m_map[(freeBlock - FSTBlocks)] = nextFreeBlock(maxBlocks - FSTBlocks, m_lastAllocated + 1);
freeBlock = m_map[(freeBlock - FSTBlocks)];
}
m_lastAllocated = freeBlock;
}
m_freeBlocks -= tmpCount;
}
return firstBlock;
}
void Directory::swapEndian()
{
std::for_each(std::begin(m_files), std::end(m_files), [](File& f){
f.swapEndian();
});
m_updateCounter = SBig(m_updateCounter);
m_checksum = SBig(m_checksum);
m_checksumInv = SBig(m_checksumInv);
}
void Directory::updateChecksum()
{
swapEndian();
calculateChecksumBE(reinterpret_cast<uint16_t*>(__raw), 0xFFE, &m_checksum, &m_checksumInv);
swapEndian();
}
bool Directory::valid() const
{
uint16_t ckSum, ckSumInv;
Directory tmp = *this;
tmp.swapEndian();
calculateChecksumBE(reinterpret_cast<const uint16_t*>(tmp.__raw), 0xFFE, &ckSum, &ckSumInv);
return (SBig(ckSum) == m_checksum && SBig(ckSumInv) == m_checksumInv);
}
Directory::Directory()
{
memset(__raw, 0xFF, BlockSize);
m_updateCounter = 0;
updateChecksum();
}
Directory::Directory(uint8_t data[])
{
memcpy(__raw, data, BlockSize);
}
Directory::Directory(const Directory& other)
{
memcpy(__raw, other.__raw, BlockSize);
}
void Directory::operator=(const Directory& other)
{
memcpy(__raw, other.__raw, BlockSize);
}
File* Directory::getFirstFreeFile(const char* game, const char* maker, const char* filename)
{
for (uint16_t i = 0 ; i < 127 ; i++)
{
if (m_files[i].m_id[0] == 0xFF)
{
File* ret = &m_files[i];
*ret = File(filename);
if (game && strlen(game) == 4)
memcpy(ret->m_id, game, 4);
if (maker && strlen(maker) == 2)
memcpy(ret->m_maker, maker, 2);
return ret;
}
}
return nullptr;
}
File* Directory::getFile(const char* game, const char* maker, const char* filename)
{
for (uint16_t i = 0 ; i < 127 ; i++)
{
if (game && strlen(game) == 4 && memcmp(m_files[i].m_id, game, 4))
continue;
if (maker && strlen(maker) == 2 && memcmp(m_files[i].m_maker, maker, 2))
continue;
if (!strcmp(m_files[i].m_filename, filename))
return &m_files[i];
}
return nullptr;
}
void calculateChecksumBE(const uint16_t* data, size_t len, uint16_t* checksum, uint16_t* checksumInv)
{
*checksum = 0;
*checksumInv = 0;
for (size_t i = 0; i < len; ++i)
{
*checksum += SBig(data[i]);
*checksumInv += SBig(uint16_t(data[i] ^ 0xFFFF));
}
*checksum = SBig(*checksum);
*checksumInv = SBig(*checksumInv);
if (*checksum == 0xFFFF)
*checksum = 0;
if (*checksumInv == 0xFFFF)
*checksumInv = 0;
}
}

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@ -0,0 +1,89 @@
#include "kabufuda/Directory.hpp"
#include "kabufuda/Util.hpp"
namespace kabufuda
{
void Directory::swapEndian()
{
std::for_each(std::begin(m_files), std::end(m_files), [](File& f){
f.swapEndian();
});
m_updateCounter = SBig(m_updateCounter);
m_checksum = SBig(m_checksum);
m_checksumInv = SBig(m_checksumInv);
}
void Directory::updateChecksum()
{
swapEndian();
calculateChecksumBE(reinterpret_cast<uint16_t*>(__raw), 0xFFE, &m_checksum, &m_checksumInv);
swapEndian();
}
bool Directory::valid() const
{
uint16_t ckSum, ckSumInv;
Directory tmp = *this;
tmp.swapEndian();
calculateChecksumBE(reinterpret_cast<const uint16_t*>(tmp.__raw), 0xFFE, &ckSum, &ckSumInv);
return (SBig(ckSum) == m_checksum && SBig(ckSumInv) == m_checksumInv);
}
Directory::Directory()
{
memset(__raw, 0xFF, BlockSize);
m_updateCounter = 0;
updateChecksum();
}
Directory::Directory(uint8_t data[])
{
memcpy(__raw, data, BlockSize);
}
Directory::Directory(const Directory& other)
{
memcpy(__raw, other.__raw, BlockSize);
}
void Directory::operator=(const Directory& other)
{
memcpy(__raw, other.__raw, BlockSize);
}
File* Directory::getFirstFreeFile(const char* game, const char* maker, const char* filename)
{
for (uint16_t i = 0 ; i < 127 ; i++)
{
if (m_files[i].m_id[0] == 0xFF)
{
File* ret = &m_files[i];
*ret = File(filename);
if (game && strlen(game) == 4)
memcpy(ret->m_id, game, 4);
if (maker && strlen(maker) == 2)
memcpy(ret->m_maker, maker, 2);
return ret;
}
}
return nullptr;
}
File* Directory::getFile(const char* game, const char* maker, const char* filename)
{
for (uint16_t i = 0 ; i < 127 ; i++)
{
if (game && strlen(game) == 4 && memcmp(m_files[i].m_id, game, 4))
continue;
if (maker && strlen(maker) == 2 && memcmp(m_files[i].m_maker, maker, 2))
continue;
if (!strcmp(m_files[i].m_filename, filename))
return &m_files[i];
}
return nullptr;
}
}

35
lib/kabufuda/File.cpp Normal file
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@ -0,0 +1,35 @@
#include "kabufuda/File.hpp"
#include "kabufuda/Util.hpp"
namespace kabufuda
{
File::File(char data[])
{
memcpy(__raw, data, 0x40);
}
File::File(const char* filename)
{
memset(__raw, 0xFF, 0x40);
memset(m_filename, 0, 32);
size_t len = strlen(filename);
len = std::min<size_t>(len, 32);
memcpy(m_filename, filename, len);
}
void File::swapEndian()
{
m_modifiedTime = SBig(m_modifiedTime);
m_imageOffset = SBig(m_imageOffset);
m_iconFmt = SBig(m_iconFmt);
m_animSpeed = SBig(m_animSpeed);
m_firstBlock = SBig(m_firstBlock);
m_blockCount = SBig(m_blockCount);
m_reserved2 = SBig(m_reserved2);
m_commentAddr = SBig(m_commentAddr);
}
File::File()
{
memset(__raw, 0xFF, 0x40);
}
}

View File

@ -23,4 +23,22 @@ uint64_t getGCTime()
return (uint64_t)(sysTime + tzDiff + tzDST) - 0x386D4380;
}
void calculateChecksumBE(const uint16_t* data, size_t len, uint16_t* checksum, uint16_t* checksumInv)
{
*checksum = 0;
*checksumInv = 0;
for (size_t i = 0; i < len; ++i)
{
*checksum += SBig(data[i]);
*checksumInv += SBig(uint16_t(data[i] ^ 0xFFFF));
}
*checksum = SBig(*checksum);
*checksumInv = SBig(*checksumInv);
if (*checksum == 0xFFFF)
*checksum = 0;
if (*checksumInv == 0xFFFF)
*checksumInv = 0;
}
}