SFS.bt

//------------------------------------------------
//--- 010 Editor v14.0.1 Binary Template
//
//      File: SFS.bt
//   Authors: Simon Davies (insomnious) & Nexus Mods
//   Version: 1.0.0
//   Purpose: 
//  Category: 
// File Mask: 
//  ID Bytes: 
//   History: 
//------------------------------------------------


LittleEndian();

typedef struct {
    char magic[4] <style=sHeading1Accent>;    //0x04034b50
    uint version;
    uint64 chunkSizesOffset;
    uint64 unknown0;
    uint64 compressedDataOffset;
    uint64 uncompressedDataSize;
    float version2;
    uint unknown1;
    uint64 sizeUncompressedChunks;
    uint64 paddingSize;
    uint unknown2;
    char compressionType[4];
    local uint64 numberOfchunks = Ceil((float) header.uncompressedDataSize / header.sizeUncompressedChunks);    
    uint compressedChunkSizes[numberOfchunks];
} HEADER;

typedef struct  {
    byte chunk[header.compressedChunkSizes[i]];
} CHUNK;

HEADER header;

local int64 fileSize = FileSize();

// go to start of data
FSeek(header.compressedDataOffset);

local int i;
local int total;
local int offset;
local int paddedSize;


for(i = 0; i < header.numberOfchunks; i++ ) {
        
    offset = FTell();    
    paddedSize = padToNearestSize(header.paddingSize, header.compressedChunkSizes[i]);
    
    Printf("offset = %d, size = %d, padded_size = %d\n", offset, header.compressedChunkSizes[i], paddedSize);
    
    CHUNK chunk; // new chunk 
    
    FSeek(offset); // reset back to chunk beginning
    FSkip(paddedSize); // seek to start of next chunk 
}



local uint64 compressedDataSize = fileSize - header.compressedDataOffset;


// Function to pad a size to the nearest 16 bytes
int padToNearestSize(int paddingSize, int size) {
    local int maxPadSize = paddingSize - 1;    
    return (size + maxPadSize) & ~maxPadSize;
}