Initial commit

arm7/source/loader/CardSaveArranger.cpp

@@ -0,0 +1,107 @@
+#include "common.h"
+#include <string.h>
+#include "SaveList.h"
+#include "SaveListFactory.h"
+#include "fileInfo.h"
+#include "CardSaveArranger.h"
+
+#define SAVE_LIST_PATH      "/_pico/savelist.bin"
+#define DEFAULT_SAVE_SIZE   (512 * 1024)
+#define SAVE_FILL_VALUE     0xFF
+
+bool CardSaveArranger::SetupCardSave(u32 gameCode, const TCHAR* savePath) const
+{
+    SaveList* saveList = SaveListFactory().CreateFromFile(SAVE_LIST_PATH);
+    u32 saveSize = DEFAULT_SAVE_SIZE;
+    if (saveList)
+    {
+        const auto saveListEntry = saveList->FindEntry(gameCode);
+        if (!saveListEntry)
+        {
+            LOG_WARNING("Game code %c%c%c%c not found in save list\n",
+                gameCode & 0xFF, (gameCode >> 8) & 0xFF, (gameCode >> 16) & 0xFF, gameCode >> 24);
+        }
+        else
+        {
+            saveSize = saveListEntry->GetSaveSize();
+            saveListEntry->Dump();
+        }
+        delete saveList;
+    }
+    if (saveSize == 0)
+    {
+        return true;
+    }
+
+    auto file = std::make_unique<FIL>();
+    LOG_DEBUG("Save file: %s\n", savePath);
+    if (f_open(file.get(), savePath, FA_OPEN_ALWAYS | FA_READ | FA_WRITE) != FR_OK)
+    {
+        LOG_FATAL("Failed to open or create save file\n");
+        return false;
+    }
+    u32 initialSize = f_size(file.get());
+    if (initialSize < saveSize)
+    {
+        if (f_lseek(file.get(), saveSize) != FR_OK ||
+            f_lseek(file.get(), initialSize) != FR_OK)
+        {
+            LOG_FATAL("Failed to expand save file\n");
+            return false;
+        }
+
+        auto ffBuffer = std::make_unique<u8[]>(512);
+        memset(ffBuffer.get(), SAVE_FILL_VALUE, 512);
+
+        u32 offset = initialSize;
+        // Align to 512 bytes
+        if ((offset & 511) != 0)
+        {
+            u32 remainingTo512 = 512 - (offset & 511);
+            UINT bytesWritten = 0;
+            if (f_write(file.get(), ffBuffer.get(), remainingTo512, &bytesWritten) != FR_OK ||
+                bytesWritten != remainingTo512)
+            {
+                LOG_FATAL("Failed to expand save file\n");
+                return false;
+            }
+            offset += remainingTo512;
+        }
+
+        // Write in 512-byte blocks
+        while (offset < saveSize)
+        {
+            UINT bytesWritten = 0;
+            if (f_write(file.get(), ffBuffer.get(), 512, &bytesWritten) != FR_OK ||
+                bytesWritten != 512)
+            {
+                LOG_FATAL("Failed to expand save file\n");
+                return false;
+            }
+            offset += 512;
+        }
+    }
+
+    DWORD* clusterTab = (DWORD*)SHARED_SAVE_FILE_INFO->clusterMap;
+    clusterTab[0] = sizeof(SHARED_SAVE_FILE_INFO->clusterMap) / sizeof(u32);
+    file->cltbl = clusterTab;
+    FRESULT seekResult = f_lseek(file.get(), CREATE_LINKMAP);
+    if (seekResult != FR_OK)
+    {
+        LOG_FATAL("Failed to make save cluster table. Result: %d\n", seekResult);
+        return false;
+    }
+    SHARED_SAVE_FILE_INFO->clusterShift = __builtin_ctz(file->obj.fs->csize);
+    SHARED_SAVE_FILE_INFO->database = file->obj.fs->database;
+    SHARED_SAVE_FILE_INFO->clusterMask = file->obj.fs->csize - 1;
+
+    LOG_DEBUG("Made save cluster table\n");
+
+    if (f_close(file.get()) != FR_OK)
+    {
+        LOG_FATAL("Failed to close save file\n");
+        return false;
+    }
+
+    return true;
+}