XPlor/definitions/asura/chunks/fcsr_chunk.xscript

// FCSR - File/Resource Chunk (reversed "RSCF")
// Contains embedded file data with path and type information
// Primary chunk type for storing assets in Asura archives

type fcsr_chunk [display="FCSR Resource"] byteorder BE
{
    // Save chunk start position
    chunk_start = pos();

    // Standard 16-byte Asura chunk header
    chunk_id = ascii(read(4));
    u32 chunk_size;
    u32 version;
    u32 flags;

    chunk_id = chunk_id;


    ui("chunk_id", "Chunk ID");
    chunk_size = chunk_size;

    ui("chunk_size", "Chunk Size");
    version = version;

    ui("version", "Version");
    flags = flags;

    ui("flags", "Flags");

    // Resource metadata
    u32 resource_type;
    u32 unknown1;
    u32 resource_size;

    resource_type = resource_type;


    ui("resource_type", "Resource Type");
    unknown1 = unknown1;

    ui("unknown1", "Unknown");
    resource_size = resource_size;

    ui("resource_size", "Resource Size");

    // Resource file path (null-terminated)
    resource_path = cstring();
    resource_path = resource_path;

    ui("resource_path", "Resource Path");

    // Get filename from path and set as chunk name for tree display
    export_name = basename(resource_path);
    set_name(export_name);

    // Calculate where resource data starts
    resource_offset = chunk_start + chunk_size - resource_size;

    // Export resource if size > 0
    if (resource_size > 0 && resource_offset >= pos()) {
        // Seek to resource data
        seek(resource_offset);

        // Read resource data
        resource_data = read(resource_size);

        // Export the file
        write_file(export_name, resource_data);

        // Preview all resources (C++ handles routing to image/audio/hex viewer)
        set_preview(export_name, resource_data);
    }
}