General: Use std::array where applicable

Same behavior, but with stronger typing. We can also eliminate usages of
magic values in some places.

include/kabufuda/BlockAllocationTable.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <cstdint>
 #include "kabufuda/Constants.hpp"
 
@@ -14,9 +15,9 @@ class BlockAllocationTable {
       uint16_t m_updateCounter;
       uint16_t m_freeBlocks;
       uint16_t m_lastAllocated;
-      uint16_t m_map[0xFFB];
+      std::array<uint16_t, 0xFFB> m_map;
     };
-    uint8_t __raw[BlockSize];
+    std::array<uint8_t, BlockSize> raw{};
   };
 #pragma pack(pop)
 
@@ -26,7 +27,6 @@ class BlockAllocationTable {
 
 public:
   explicit BlockAllocationTable(uint32_t blockCount = (uint32_t(ECardSize::Card2043Mb) * MbitToBlocks));
-  BlockAllocationTable(uint8_t data[BlockSize]);
   ~BlockAllocationTable() = default;
 
   uint16_t getNextBlock(uint16_t block) const;

include/kabufuda/Card.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <cstdint>
 #include <string>
 
@@ -37,8 +38,8 @@ struct CardStat {
   char x0_fileName[CARD_FILENAME_MAX];
   uint32_t x20_length;
   uint32_t x24_time; /* seconds since 01/01/2000 midnight */
-  uint8_t x28_gameName[4];
+  std::array<uint8_t, 4> x28_gameName;
-  uint8_t x2c_company[2];
+  std::array<uint8_t, 2> x2c_company;
 
   /* read/write (Set by Card::getStatus/Card::setStatus) */
   uint8_t x2e_bannerFormat;
@@ -51,7 +52,7 @@ struct CardStat {
   /* read-only (Set by Card::getStatus) */
   uint32_t x3c_offsetBanner;
   uint32_t x40_offsetBannerTlut;
-  uint32_t x44_offsetIcon[CARD_ICON_MAX];
+  std::array<uint32_t, CARD_ICON_MAX> x44_offsetIcon;
   uint32_t x64_offsetIconTlut;
   uint32_t x68_offsetData;
 
@@ -79,7 +80,7 @@ class Card {
   struct CardHeader {
     union {
       struct {
-        uint8_t m_serial[12];
+        std::array<uint8_t, 12> m_serial;
         uint64_t m_formatTime;
         int32_t m_sramBias;
         uint32_t m_sramLanguage;
@@ -87,12 +88,12 @@ class Card {
         uint16_t m_deviceId; /* 0 for Slot A, 1 for Slot B */
         uint16_t m_sizeMb;
         uint16_t m_encoding;
-        uint8_t __padding[468];
+        std::array<uint8_t, 468> padding;
         uint16_t m_updateCounter;
         uint16_t m_checksum;
         uint16_t m_checksumInv;
       };
-      uint8_t __raw[BlockSize];
+      std::array<uint8_t, BlockSize> raw;
     };
     void _swapEndian();
   };
@@ -102,10 +103,10 @@ class Card {
 
   SystemString m_filename;
   AsyncIO m_fileHandle;
-  Directory m_dirs[2];
+  std::array<Directory, 2> m_dirs;
-  BlockAllocationTable m_bats[2];
+  std::array<BlockAllocationTable, 2> m_bats;
-  Directory m_tmpDirs[2];
+  std::array<Directory, 2> m_tmpDirs;
-  BlockAllocationTable m_tmpBats[2];
+  std::array<BlockAllocationTable, 2> m_tmpBats;
   uint8_t m_currentDir;
   uint8_t m_currentBat;
 

include/kabufuda/Directory.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <cstdint>
 #include "kabufuda/File.hpp"
 
@@ -9,13 +10,13 @@ class Directory {
 #pragma pack(push, 4)
   union {
     struct {
-      File m_files[MaxFiles];
+      std::array<File, MaxFiles> m_files;
-      uint8_t __padding[0x3a];
+      std::array<uint8_t, 0x3a> padding;
       uint16_t m_updateCounter;
       uint16_t m_checksum;
       uint16_t m_checksumInv;
     };
-    uint8_t __raw[BlockSize];
+    std::array<uint8_t, BlockSize> raw;
   };
 #pragma pack(pop)
 

include/kabufuda/File.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <cstdint>
 #include "kabufuda/Constants.hpp"
 
@@ -11,8 +12,8 @@ class File {
 #pragma pack(push, 4)
   union {
     struct {
-      uint8_t m_game[4];
+      std::array<uint8_t, 4> m_game;
-      uint8_t m_maker[2];
+      std::array<uint8_t, 2> m_maker;
       uint8_t m_reserved;
       uint8_t m_bannerFlags;
       char m_filename[0x20];
@@ -27,7 +28,7 @@ class File {
       uint16_t m_reserved2;
       uint32_t m_commentAddr;
     };
-    uint8_t __raw[0x40];
+    std::array<uint8_t, 0x40> raw;
   };
 
 #pragma pack(pop)

include/kabufuda/SRAM.hpp

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <cstdint>
 
 // Modified code taken from libogc
@@ -41,7 +42,7 @@ union SRAMFlags {
 };
 
 union SRAM {
-  uint8_t p_SRAM[64];
+  std::array<uint8_t, 64> p_SRAM;
   struct // Stored configuration value from the system SRAM area
   {
     uint16_t checksum;      // Holds the block checksum.
@@ -55,13 +56,14 @@ union SRAM {
     SRAMFlags flags;        // Device and operations flag
 
     // Stored configuration value from the extended SRAM area
-    uint8_t flash_id[2][12];    // flash_id[2][12] 96bit memorycard unlock flash ID
+    using FlashID = std::array<std::array<uint8_t, 12>, 2>;
-    uint32_t wirelessKbd_id;    // Device ID of last connected wireless keyboard
+    FlashID flash_id;                       // flash_id[2][12] 96bit memorycard unlock flash ID
-    uint16_t wirelessPad_id[4]; // 16-bit device ID of last connected pad.
+    uint32_t wirelessKbd_id;                // Device ID of last connected wireless keyboard
-    uint8_t dvderr_code;        // last non-recoverable error from DVD interface
+    std::array<uint16_t, 4> wirelessPad_id; // 16-bit device ID of last connected pad.
-    uint8_t __padding0;         // reserved
+    uint8_t dvderr_code;                    // last non-recoverable error from DVD interface
-    uint8_t flashID_chksum[2];  // 8-bit checksum of unlock flash ID
+    uint8_t __padding0;                     // reserved
-    uint32_t __padding1;        // padding
+    std::array<uint8_t, 2> flashID_chksum;  // 8-bit checksum of unlock flash ID
+    uint32_t __padding1;                    // padding
   };
 };
 #pragma pack(pop)

lib/kabufuda/BlockAllocationTable.cpp

@@ -2,7 +2,6 @@
 
 #include <algorithm>
 #include <cstddef>
-#include <cstring>
 #include <vector>
 
 #include "kabufuda/Util.hpp"
@@ -19,23 +18,21 @@ void BlockAllocationTable::swapEndian() {
 
 void BlockAllocationTable::updateChecksum() {
   swapEndian();
-  calculateChecksumBE(reinterpret_cast<uint16_t*>(__raw + 4), 0xFFE, &m_checksum, &m_checksumInv);
+  calculateChecksumBE(reinterpret_cast<uint16_t*>(raw.data() + 4), 0xFFE, &m_checksum, &m_checksumInv);
   swapEndian();
 }
 
 bool BlockAllocationTable::valid() const {
   uint16_t ckSum, ckSumInv;
   const_cast<BlockAllocationTable&>(*this).swapEndian();
-  calculateChecksumBE(reinterpret_cast<const uint16_t*>(__raw + 4), 0xFFE, &ckSum, &ckSumInv);
+  calculateChecksumBE(reinterpret_cast<const uint16_t*>(raw.data() + 4), 0xFFE, &ckSum, &ckSumInv);
   bool res = (ckSum == m_checksum && ckSumInv == m_checksumInv);
   const_cast<BlockAllocationTable&>(*this).swapEndian();
   return res;
 }
 
-BlockAllocationTable::BlockAllocationTable(uint32_t blockCount) {
+BlockAllocationTable::BlockAllocationTable(uint32_t blockCount)
-  memset(__raw, 0, BlockSize);
+: m_freeBlocks{uint16_t(blockCount - FSTBlocks)}, m_lastAllocated{4} {
-  m_freeBlocks = uint16_t(blockCount - FSTBlocks);
-  m_lastAllocated = 4;
   updateChecksum();
 }
 

lib/kabufuda/Card.cpp

@@ -26,40 +26,36 @@ void Card::CardHeader::_swapEndian() {
   m_checksumInv = SBig(m_checksumInv);
 }
 
-Card::Card() { memset(m_ch.__raw, 0xFF, BlockSize); }
+Card::Card() { m_ch.raw.fill(0xFF); }
 
 Card::Card(Card&& other) {
-  memmove(m_ch.__raw, other.m_ch.__raw, BlockSize);
+  m_ch.raw = other.m_ch.raw;
   m_filename = std::move(other.m_filename);
   m_fileHandle = std::move(other.m_fileHandle);
-  m_dirs[0] = std::move(other.m_dirs[0]);
+  m_dirs = std::move(other.m_dirs);
-  m_dirs[1] = std::move(other.m_dirs[1]);
+  m_bats = std::move(other.m_bats);
-  m_bats[0] = std::move(other.m_bats[0]);
-  m_bats[1] = std::move(other.m_bats[1]);
   m_currentDir = other.m_currentDir;
   m_currentBat = other.m_currentBat;
 
   m_maxBlock = other.m_maxBlock;
-  memmove(m_game, other.m_game, 5);
+  std::copy(std::cbegin(other.m_game), std::cend(other.m_game), std::begin(m_game));
-  memmove(m_maker, other.m_maker, 3);
+  std::copy(std::cbegin(other.m_maker), std::cend(other.m_maker), std::begin(m_maker));
 }
 
 Card& Card::operator=(Card&& other) {
   close();
 
-  memmove(m_ch.__raw, other.m_ch.__raw, BlockSize);
+  m_ch.raw = other.m_ch.raw;
   m_filename = std::move(other.m_filename);
   m_fileHandle = std::move(other.m_fileHandle);
-  m_dirs[0] = std::move(other.m_dirs[0]);
+  m_dirs = std::move(other.m_dirs);
-  m_dirs[1] = std::move(other.m_dirs[1]);
+  m_bats = std::move(other.m_bats);
-  m_bats[0] = std::move(other.m_bats[0]);
-  m_bats[1] = std::move(other.m_bats[1]);
   m_currentDir = other.m_currentDir;
   m_currentBat = other.m_currentBat;
 
   m_maxBlock = other.m_maxBlock;
-  memmove(m_game, other.m_game, 5);
+  std::copy(std::cbegin(other.m_game), std::cend(other.m_game), std::begin(m_game));
-  memmove(m_maker, other.m_maker, 3);
+  std::copy(std::cbegin(other.m_maker), std::cend(other.m_maker), std::begin(m_maker));
 
   return *this;
 }
@@ -109,11 +105,14 @@ ECardResult Card::_pumpOpen() {
 }
 
 Card::Card(const char* game, const char* maker) {
-  memset(m_ch.__raw, 0xFF, BlockSize);
+  m_ch.raw.fill(0xFF);
-  if (game && strlen(game) == 4)
+
-    memcpy(m_game, game, 4);
+  if (game != nullptr && std::strlen(game) == 4) {
-  if (maker && strlen(maker) == 2)
+    std::memcpy(m_game, game, 4);
-    memcpy(m_maker, maker, 2);
+  }
+  if (maker != nullptr && std::strlen(maker) == 2) {
+    std::memcpy(m_maker, maker, 2);
+  }
 }
 
 Card::~Card() { close(); }
@@ -166,7 +165,7 @@ void Card::_updateDirAndBat(const Directory& dir, const BlockAllocationTable& ba
 
 void Card::_updateChecksum() {
   m_ch._swapEndian();
-  calculateChecksumBE(reinterpret_cast<uint16_t*>(m_ch.__raw), 0xFE, &m_ch.m_checksum, &m_ch.m_checksumInv);
+  calculateChecksumBE(reinterpret_cast<uint16_t*>(m_ch.raw.data()), 0xFE, &m_ch.m_checksum, &m_ch.m_checksumInv);
   m_ch._swapEndian();
 }
 
@@ -300,25 +299,28 @@ ECardResult Card::deleteFile(uint32_t fileno) {
 }
 
 ECardResult Card::renameFile(const char* oldName, const char* newName) {
-  ECardResult openRes = _pumpOpen();
+  const ECardResult openRes = _pumpOpen();
-  if (openRes != ECardResult::READY)
+  if (openRes != ECardResult::READY) {
     return openRes;
+  }
 
-  if (strlen(newName) > 32)
+  if (std::strlen(newName) > 32) {
     return ECardResult::NAMETOOLONG;
+  }
 
   Directory dir = m_dirs[m_currentDir];
   File* f = dir.getFile(m_game, m_maker, oldName);
-  if (!f)
+  if (f == nullptr) {
     return ECardResult::NOFILE;
+  }
 
   if (File* replF = dir.getFile(m_game, m_maker, newName)) {
     BlockAllocationTable bat = m_bats[m_currentBat];
     _deleteFile(*replF, bat);
-    strncpy(f->m_filename, newName, 32);
+    std::strncpy(f->m_filename, newName, 32);
     _updateDirAndBat(dir, bat);
   } else {
-    strncpy(f->m_filename, newName, 32);
+    std::strncpy(f->m_filename, newName, 32);
     _updateDirAndBat(dir, m_bats[m_currentBat]);
   }
   return ECardResult::READY;
@@ -554,11 +556,11 @@ ECardResult Card::getStatus(uint32_t fileNo, CardStat& statOut) const {
   if (!file || file->m_game[0] == 0xFF)
     return ECardResult::NOFILE;
 
-  strncpy(statOut.x0_fileName, file->m_filename, 32);
+  std::strncpy(statOut.x0_fileName, file->m_filename, 32);
   statOut.x20_length = file->m_blockCount * BlockSize;
   statOut.x24_time = file->m_modifiedTime;
-  memcpy(statOut.x28_gameName, file->m_game, 4);
+  statOut.x28_gameName = file->m_game;
-  memcpy(statOut.x2c_company, file->m_maker, 2);
+  statOut.x2c_company = file->m_maker;
 
   statOut.x2e_bannerFormat = file->m_bannerFlags;
   statOut.x30_iconAddr = file->m_iconAddress;
@@ -569,8 +571,7 @@ ECardResult Card::getStatus(uint32_t fileNo, CardStat& statOut) const {
   if (file->m_iconAddress == UINT32_MAX) {
     statOut.x3c_offsetBanner = UINT32_MAX;
     statOut.x40_offsetBannerTlut = UINT32_MAX;
-    for (int i = 0; i < CARD_ICON_MAX; ++i)
+    statOut.x44_offsetIcon.fill(UINT32_MAX);
-      statOut.x44_offsetIcon[i] = UINT32_MAX;
     statOut.x64_offsetIconTlut = UINT32_MAX;
     statOut.x68_offsetData = file->m_commentAddr + 64;
   } else {
@@ -580,11 +581,12 @@ ECardResult Card::getStatus(uint32_t fileNo, CardStat& statOut) const {
     statOut.x40_offsetBannerTlut = cur;
     cur += TlutSize(statOut.GetBannerFormat());
     bool palette = false;
-    for (int i = 0; i < CARD_ICON_MAX; ++i) {
+    for (size_t i = 0; i < statOut.x44_offsetIcon.size(); ++i) {
       statOut.x44_offsetIcon[i] = cur;
-      EImageFormat fmt = statOut.GetIconFormat(i);
+      const EImageFormat fmt = statOut.GetIconFormat(int(i));
-      if (fmt == EImageFormat::C8)
+      if (fmt == EImageFormat::C8) {
         palette = true;
+      }
       cur += IconSize(fmt);
     }
     if (palette) {
@@ -726,11 +728,14 @@ const uint8_t* Card::getCurrentMaker() const {
 
 void Card::getSerial(uint64_t& serial) {
   m_ch._swapEndian();
-  uint32_t serialBuf[8];
+
-  for (uint32_t i = 0; i < 8; i++)
+  std::array<uint32_t, 8> serialBuf{};
-    serialBuf[i] = SBig(*reinterpret_cast<uint32_t*>(m_ch.__raw + (i * 4)));
+  for (size_t i = 0; i < serialBuf.size(); i++) {
+    serialBuf[i] = SBig(*reinterpret_cast<uint32_t*>(m_ch.raw.data() + (i * 4)));
+  }
   serial = uint64_t(serialBuf[0] ^ serialBuf[2] ^ serialBuf[4] ^ serialBuf[6]) << 32 |
            (serialBuf[1] ^ serialBuf[3] ^ serialBuf[5] ^ serialBuf[7]);
+
   m_ch._swapEndian();
 }
 
@@ -747,10 +752,11 @@ void Card::getFreeBlocks(int32_t& bytesNotUsed, int32_t& filesNotUsed) {
 static std::unique_ptr<uint8_t[]> DummyBlock;
 
 void Card::format(ECardSlot id, ECardSize size, EEncoding encoding) {
-  memset(m_ch.__raw, 0xFF, BlockSize);
+  m_ch.raw.fill(0xFF);
+
   uint64_t rand = uint64_t(getGCTime());
   m_ch.m_formatTime = rand;
-  for (int i = 0; i < 12; i++) {
+  for (size_t i = 0; i < m_ch.m_serial.size(); i++) {
     rand = (((rand * uint64_t(0x41c64e6d)) + uint64_t(0x3039)) >> 16);
     m_ch.m_serial[i] = uint8_t(g_SRAM.flash_id[uint32_t(id)][i] + uint32_t(rand));
     rand = (((rand * uint64_t(0x41c64e6d)) + uint64_t(0x3039)) >> 16);
@@ -776,30 +782,31 @@ void Card::format(ECardSlot id, ECardSize size, EEncoding encoding) {
   m_fileHandle = AsyncIO(m_filename.c_str(), true);
 
   if (m_fileHandle) {
-    uint32_t blockCount = (uint32_t(size) * MbitToBlocks) - 5;
+    const uint32_t blockCount = (uint32_t(size) * MbitToBlocks) - 5;
 
     m_tmpCh = m_ch;
     m_tmpCh._swapEndian();
     m_fileHandle.resizeQueue(5 + blockCount);
-    m_fileHandle.asyncWrite(0, m_tmpCh.__raw, BlockSize, 0);
+    m_fileHandle.asyncWrite(0, m_tmpCh.raw.data(), BlockSize, 0);
     m_tmpDirs[0] = m_dirs[0];
     m_tmpDirs[0].swapEndian();
-    m_fileHandle.asyncWrite(1, m_tmpDirs[0].__raw, BlockSize, BlockSize * 1);
+    m_fileHandle.asyncWrite(1, m_tmpDirs[0].raw.data(), BlockSize, BlockSize * 1);
     m_tmpDirs[1] = m_dirs[1];
     m_tmpDirs[1].swapEndian();
-    m_fileHandle.asyncWrite(2, m_tmpDirs[1].__raw, BlockSize, BlockSize * 2);
+    m_fileHandle.asyncWrite(2, m_tmpDirs[1].raw.data(), BlockSize, BlockSize * 2);
     m_tmpBats[0] = m_bats[0];
     m_tmpBats[0].swapEndian();
-    m_fileHandle.asyncWrite(3, m_tmpBats[0].__raw, BlockSize, BlockSize * 3);
+    m_fileHandle.asyncWrite(3, m_tmpBats[0].raw.data(), BlockSize, BlockSize * 3);
     m_tmpBats[1] = m_bats[1];
     m_tmpBats[1].swapEndian();
-    m_fileHandle.asyncWrite(4, m_tmpBats[1].__raw, BlockSize, BlockSize * 4);
+    m_fileHandle.asyncWrite(4, m_tmpBats[1].raw.data(), BlockSize, BlockSize * 4);
     if (!DummyBlock) {
       DummyBlock.reset(new uint8_t[BlockSize]);
       memset(DummyBlock.get(), 0xFF, BlockSize);
     }
-    for (uint32_t i = 0; i < blockCount; ++i)
+    for (uint32_t i = 0; i < blockCount; ++i) {
       m_fileHandle.asyncWrite(i + 5, DummyBlock.get(), BlockSize, BlockSize * (i + 5));
+    }
     m_dirty = false;
   }
 }
@@ -821,19 +828,19 @@ void Card::commit() {
     m_tmpDirs[0] = m_dirs[0];
     m_tmpDirs[0].updateChecksum();
     m_tmpDirs[0].swapEndian();
-    m_fileHandle.asyncWrite(1, m_tmpDirs[0].__raw, BlockSize, BlockSize * 1);
+    m_fileHandle.asyncWrite(1, m_tmpDirs[0].raw.data(), BlockSize, BlockSize * 1);
     m_tmpDirs[1] = m_dirs[1];
     m_tmpDirs[1].updateChecksum();
     m_tmpDirs[1].swapEndian();
-    m_fileHandle.asyncWrite(2, m_tmpDirs[1].__raw, BlockSize, BlockSize * 2);
+    m_fileHandle.asyncWrite(2, m_tmpDirs[1].raw.data(), BlockSize, BlockSize * 2);
     m_tmpBats[0] = m_bats[0];
     m_tmpBats[0].updateChecksum();
     m_tmpBats[0].swapEndian();
-    m_fileHandle.asyncWrite(3, m_tmpBats[0].__raw, BlockSize, BlockSize * 3);
+    m_fileHandle.asyncWrite(3, m_tmpBats[0].raw.data(), BlockSize, BlockSize * 3);
     m_tmpBats[1] = m_bats[1];
     m_tmpBats[1].updateChecksum();
     m_tmpBats[1].swapEndian();
-    m_fileHandle.asyncWrite(4, m_tmpBats[1].__raw, BlockSize, BlockSize * 4);
+    m_fileHandle.asyncWrite(4, m_tmpBats[1].raw.data(), BlockSize, BlockSize * 4);
     m_dirty = false;
   }
 }
@@ -844,15 +851,15 @@ bool Card::open(SystemStringView filepath) {
   m_fileHandle = AsyncIO(m_filename);
   if (m_fileHandle) {
     m_fileHandle.resizeQueue(5);
-    if (!m_fileHandle.asyncRead(0, m_ch.__raw, BlockSize, 0))
+    if (!m_fileHandle.asyncRead(0, m_ch.raw.data(), BlockSize, 0))
       return false;
-    if (!m_fileHandle.asyncRead(1, m_dirs[0].__raw, BlockSize, BlockSize * 1))
+    if (!m_fileHandle.asyncRead(1, m_dirs[0].raw.data(), BlockSize, BlockSize * 1))
       return false;
-    if (!m_fileHandle.asyncRead(2, m_dirs[1].__raw, BlockSize, BlockSize * 2))
+    if (!m_fileHandle.asyncRead(2, m_dirs[1].raw.data(), BlockSize, BlockSize * 2))
       return false;
-    if (!m_fileHandle.asyncRead(3, m_bats[0].__raw, BlockSize, BlockSize * 3))
+    if (!m_fileHandle.asyncRead(3, m_bats[0].raw.data(), BlockSize, BlockSize * 3))
       return false;
-    if (!m_fileHandle.asyncRead(4, m_bats[1].__raw, BlockSize, BlockSize * 4))
+    if (!m_fileHandle.asyncRead(4, m_bats[1].raw.data(), BlockSize, BlockSize * 4))
       return false;
     return true;
   }
@@ -882,7 +889,7 @@ ECardResult Card::getError() const {
 
   uint16_t ckSum, ckSumInv;
   const_cast<Card&>(*this).m_ch._swapEndian();
-  calculateChecksumBE(reinterpret_cast<const uint16_t*>(m_ch.__raw), 0xFE, &ckSum, &ckSumInv);
+  calculateChecksumBE(reinterpret_cast<const uint16_t*>(m_ch.raw.data()), 0xFE, &ckSum, &ckSumInv);
   bool res = (ckSum == m_ch.m_checksum && ckSumInv == m_ch.m_checksumInv);
   const_cast<Card&>(*this).m_ch._swapEndian();
 

lib/kabufuda/Directory.cpp

@@ -16,100 +16,124 @@ void Directory::swapEndian() {
 
 void Directory::updateChecksum() {
   swapEndian();
-  calculateChecksumBE(reinterpret_cast<uint16_t*>(__raw), 0xFFE, &m_checksum, &m_checksumInv);
+  calculateChecksumBE(reinterpret_cast<uint16_t*>(raw.data()), 0xFFE, &m_checksum, &m_checksumInv);
   swapEndian();
 }
 
 bool Directory::valid() const {
   uint16_t ckSum, ckSumInv;
   const_cast<Directory&>(*this).swapEndian();
-  calculateChecksumBE(reinterpret_cast<const uint16_t*>(__raw), 0xFFE, &ckSum, &ckSumInv);
+  calculateChecksumBE(reinterpret_cast<const uint16_t*>(raw.data()), 0xFFE, &ckSum, &ckSumInv);
   bool res = (ckSum == m_checksum && ckSumInv == m_checksumInv);
   const_cast<Directory&>(*this).swapEndian();
   return res;
 }
 
 Directory::Directory() {
-  memset(__raw, 0xFF, BlockSize);
+  raw.fill(0xFF);
   m_updateCounter = 0;
   updateChecksum();
 }
 
-Directory::Directory(uint8_t data[]) { memcpy(__raw, data, BlockSize); }
+Directory::Directory(uint8_t data[]) { std::memcpy(raw.data(), data, BlockSize); }
 
 bool Directory::hasFreeFile() const {
-  for (uint16_t i = 0; i < 127; i++)
+  return std::any_of(m_files.cbegin(), m_files.cend(), [](const auto& file) { return file.m_game[0] == 0xFF; });
-    if (m_files[i].m_game[0] == 0xFF)
-      return true;
-  return false;
 }
 
 int32_t Directory::numFreeFiles() const {
-  int32_t ret = 0;
+  return int32_t(
-  for (uint16_t i = 0; i < 127; i++)
+      std::count_if(m_files.cbegin(), m_files.cend(), [](const auto& file) { return file.m_game[0] == 0xFF; }));
-    if (m_files[i].m_game[0] == 0xFF)
-      ++ret;
-  return ret;
 }
 
 File* Directory::getFirstFreeFile(const char* game, const char* maker, const char* filename) {
-  for (uint16_t i = 0; i < 127; i++) {
+  const auto iter =
-    if (m_files[i].m_game[0] == 0xFF) {
+      std::find_if(m_files.begin(), m_files.end(), [](const auto& file) { return file.m_game[0] == 0xFF; });
-      File* ret = &m_files[i];
+
-      *ret = File(filename);
+  if (iter == m_files.cend()) {
-      if (game && strlen(game) == 4)
+    return nullptr;
-        memcpy(ret->m_game, game, 4);
-      if (maker && strlen(maker) == 2)
-        memcpy(ret->m_maker, maker, 2);
-      return ret;
-    }
   }
 
-  return nullptr;
+  *iter = File(filename);
+  if (game != nullptr && std::strlen(game) == iter->m_game.size()) {
+    std::memcpy(iter->m_game.data(), game, iter->m_game.size());
+  }
+  if (maker != nullptr && std::strlen(maker) == iter->m_maker.size()) {
+    std::memcpy(iter->m_maker.data(), maker, iter->m_maker.size());
+  }
+
+  return &*iter;
 }
 
 File* Directory::getFirstNonFreeFile(uint32_t start, const char* game, const char* maker) {
-  for (uint16_t i = start; i < 127; i++) {
+  const auto iter = std::find_if(m_files.begin(), m_files.end(), [game, maker](const auto& file) {
-    if (m_files[i].m_game[0] != 0xFF) {
+    if (file.m_game[0] == 0xFF) {
-      File* ret = &m_files[i];
+      return false;
-      if (game && std::strlen(game) == 4 && std::strncmp(reinterpret_cast<const char*>(ret->m_game), game, 4) != 0)
-        continue;
-      if (maker && std::strlen(maker) == 2 && std::strncmp(reinterpret_cast<const char*>(ret->m_maker), maker, 2) != 0)
-        continue;
-      return ret;
     }
+
+    const auto* const game_ptr = reinterpret_cast<const char*>(file.m_game.data());
+    const auto game_size = file.m_game.size();
+    if (game != nullptr && std::strlen(game) == game_size && std::strncmp(game_ptr, game, game_size) != 0) {
+      return false;
+    }
+
+    const auto* const maker_ptr = reinterpret_cast<const char*>(file.m_maker.data());
+    const auto maker_size = file.m_maker.size();
+    if (maker != nullptr && std::strlen(maker) == maker_size && std::strncmp(maker_ptr, maker, maker_size) != 0) {
+      return false;
+    }
+
+    return true;
+  });
+
+  if (iter == m_files.cend()) {
+    return nullptr;
   }
 
-  return nullptr;
+  return &*iter;
 }
 
 File* Directory::getFile(const char* game, const char* maker, const char* filename) {
-  for (uint16_t i = 0; i < 127; i++) {
+  const auto iter = std::find_if(m_files.begin(), m_files.end(), [=](const auto& file) {
-    if (game && strlen(game) == 4 && memcmp(m_files[i].m_game, game, 4))
+    const auto game_size = file.m_game.size();
-      continue;
+    if (game != nullptr && std::strlen(game) == game_size && std::memcmp(file.m_game.data(), game, game_size) != 0) {
-    if (maker && strlen(maker) == 2 && memcmp(m_files[i].m_maker, maker, 2))
+      return false;
-      continue;
+    }
-    if (!strcmp(m_files[i].m_filename, filename))
+
-      return &m_files[i];
+    const auto maker_size = file.m_maker.size();
+    if (maker != nullptr && std::strlen(maker) == maker_size &&
+        std::memcmp(file.m_maker.data(), maker, maker_size) != 0) {
+      return false;
+    }
+
+    return std::strcmp(file.m_filename, filename) == 0;
+  });
+
+  if (iter == m_files.cend()) {
+    return nullptr;
   }
 
-  return nullptr;
+  return &*iter;
 }
 
 File* Directory::getFile(uint32_t idx) {
-  if (idx >= 127)
+  if (idx >= m_files.size()) {
     return nullptr;
+  }
 
   return &m_files[idx];
 }
 
 int32_t Directory::indexForFile(File* f) {
-  if (!f)
+  if (f == nullptr) {
     return -1;
+  }
 
-  auto it = std::find_if(std::begin(m_files), std::end(m_files), [&f](const File& file) -> bool { return f == &file; });
+  const auto it = std::find_if(std::cbegin(m_files), std::cend(m_files), [&f](const File& file) { return f == &file; });
-  if (it == std::end(m_files))
+  if (it == std::cend(m_files)) {
     return -1;
-  return it - std::begin(m_files);
+  }
+
+  return it - std::cbegin(m_files);
 }
 } // namespace kabufuda

lib/kabufuda/File.cpp

@@ -1,18 +1,19 @@
 #include "kabufuda/File.hpp"
 
 #include <cstring>
+#include <iterator>
 
 #include "kabufuda/Util.hpp"
 
 namespace kabufuda {
-File::File() { memset(__raw, 0xFF, 0x40); }
+File::File() { raw.fill(0xFF); }
 
-File::File(char data[]) { memcpy(__raw, data, 0x40); }
+File::File(char data[]) { std::memcpy(raw.data(), data, raw.size()); }
 
 File::File(const char* filename) {
-  memset(__raw, 0, 0x40);
+  raw.fill(0);
-  memset(m_filename, 0, 32);
+  std::memset(m_filename, 0, std::size(m_filename));
-  strncpy(m_filename, filename, 32);
+  std::strncpy(m_filename, filename, std::size(m_filename));
 }
 void File::swapEndian() {
   m_modifiedTime = SBig(m_modifiedTime);