// LegoBlobReader.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <conio.h>
#include <stdio.h>
#include <malloc.h>
#include <math.h>
#include <algorithm>

typedef unsigned char byte; 

static char const* FILE_NAME = "GAMEPROGRESS.broke.blob"; 


byte* ReadFileToBuffer(char const* filename, size_t* file_len)
{
    FILE* fp = nullptr; 
    ::fopen_s(&fp, filename, "r");
    if (nullptr == fp) {
        return nullptr;
    }

    ::fseek(fp, 0, SEEK_END); 
    size_t eof = ::ftell(fp); 
    ::fseek(fp, 0, SEEK_SET); 

    byte* buffer = (byte*) ::malloc(eof); 
    if (nullptr != buffer) {
        *file_len = ::fread(buffer, 1, eof, fp);
    }

    ::fclose(fp); 
    return buffer; 
}

static void DisplayProgress(byte* buffer, size_t len, size_t offset)
{
    size_t bytes_to_show = len - offset; 
    bytes_to_show = std::min<size_t>(bytes_to_show, 16); 
    printf("At %u (0x%08x) into buffer...  Next %u byte(s) are...\n> ", offset, offset, bytes_to_show); 
    for (size_t i = 0; i < bytes_to_show; ++i) {
        byte b = buffer[offset + i]; 
        printf("%02X ", b); 
    }
}

static void ParseBuffer(byte* buffer, size_t len)
{
    size_t offset = 0; 
    DisplayProgress(buffer, len, offset); 
}

int main()
{
    size_t file_len; 
    byte* buffer = ReadFileToBuffer(FILE_NAME, &file_len);
    if (nullptr == buffer) {
        printf("Failed to open file.\n"); 
    }

    ParseBuffer(buffer, file_len); 

    free(buffer); 
    printf("\n\n\n"); 
    _getch(); 
}

// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu

// Tips for Getting Started: 
//   1. Use the Solution Explorer window to add/manage files
//   2. Use the Team Explorer window to connect to source control
//   3. Use the Output window to see build output and other messages
//   4. Use the Error List window to view errors
//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file