Initial commit

arm7/source/loader/DsiWareSaveArranger.h

@@ -0,0 +1,65 @@
+#pragma once
+#include <memory>
+#include "fat/ff.h"
+#include "ndsHeader.h"
+
+/// @brief Struct holding the result of setting up DSiWare save data.
+struct DsiWareSaveResult
+{
+    /// @brief The short filename path of the private save file.
+    char privateSavePath[64];
+
+    /// @brief The short filename path of the public save file.
+    char publicSavePath[64];
+
+    /// @brief The short filename path of rom file.
+    char romFilePath[64];
+};
+
+/// @brief Class for setting up the save files for DSiWare roms.
+class DsiWareSaveArranger
+{
+public:
+    /// @brief Sets up the save files for a DSiWare rom with the given \p romPath and \p romHeader.
+    /// @param romPath The path to the DSiWare rom to setup the save files for.
+    /// @param romHeader The header of the DSiWare rom.
+    /// @param result Struct in which the resulting paths are returned.
+    /// @return \c true when setting up the save was successful, or \c false otherwise.
+    bool SetupDsiWareSave(const TCHAR* romPath, const nds_header_twl_t& romHeader, DsiWareSaveResult& result) const;
+
+private:
+#pragma pack(push, 1)
+    /// @brief Struct representing a FAT header.
+    struct fat_header_t
+    {
+        u8 jumpInstruction[3];
+        u8 oemName[8];
+        u16 bytesPerSector;
+        u8 sectorsPerCluster;
+        u16 reservedSectors;
+        u8 numberOfFats;
+        u16 rootEntries;
+        u16 totalSectorsSmall;
+        u8 mediaType;
+        u16 fatSectorCount;
+        u16 sectorsPerTrack;
+        u16 numberOfHeads;
+        u32 hiddenSectors;
+        u32 totalSectorsLarge;
+        u8 diskNumber;
+        u8 BS_Reserved1;
+        u8 bootSignature;
+        u32 volumeSerialNumber;
+        u8 volumeLabel[11];
+        u8 fileSystemType[8];
+        u8 bootCode[448];
+        u16 endOfSectorMarker;
+    };
+#pragma pack(pop)
+
+    static_assert(sizeof(fat_header_t) == 512, "Invalid size of fat_header_t.");
+
+    bool SetupDsiWareSaveFile(const TCHAR* savePath, u32 saveSize) const;
+    std::unique_ptr<fat_header_t> CreateFatHeader(u32 saveSize) const;
+    bool CreateDeviceListPath(TCHAR* savePath, char* deviceListPath) const;
+};