generate a highly more advanced version of this code without using pdb crate or external libraries besides for byteorder
use std::io::{self, Read, Seek, SeekFrom};
use std::fs::File;
use byteorder::{LittleEndian, ReadBytesExt};

fn main() -> io::Result<()> {
    // Entry point of the PDB parsing program
    let args: Vec<String> = std::env::args().collect();
    if args.len() != 2 {
        eprintln!("Usage: {} <path_to_pdb_file>", args[0]);
        std::process::exit(1);
    }

    let pdb_path = &args[1];

    println!("Parsing PDB file: {}", pdb_path);

    // Open the PDB file
    let file = match File::open(pdb_path) {
        Ok(f) => f,
        Err(e) => {
            eprintln!("Failed to open file {}: {}", pdb_path, e);
            std::process::exit(1);
        }
    };
    let mut reader = io::BufReader::new(file);

    // Read and parse the SuperBlock (first 64 bytes)
    let mut superblock = [0u8; 64];
    reader.read_exact(&mut superblock)?;

    // Verify the PDB signature
    let signature = &superblock[0..32];
    // Expected signature for PDB v7.00
    let expected_signature = b"Microsoft C/C++ MSF 7.00";
    if &signature[0..expected_signature.len()] != expected_signature {
        eprintln!("Invalid PDB signature.");
        std::process::exit(1);
    }

    println!("Valid PDB file detected.");

    // Parse SuperBlock fields
    let mut cursor = io::Cursor::new(&superblock);

    // Skip the signature (32 bytes)
    cursor.seek(SeekFrom::Start(32))?;

    // Read Page Size (4 bytes)
    let page_size = cursor.read_u32::<LittleEndian>()?;
    println!("Page Size: {}", page_size);

    // Read Free Page Map (4 bytes)
    let fpm_page = cursor.read_u32::<LittleEndian>()?;
    println!("Free Page Map at page: {}", fpm_page);

    // Read Number of Pages (4 bytes)
    let num_pages = cursor.read_u32::<LittleEndian>()?;
    println!("Number of Pages: {}", num_pages);

    // Read Root Stream Size (4 bytes)
    let root_stream_size = cursor.read_u32::<LittleEndian>()?;
    println!("Root Stream Size: {}", root_stream_size);

    // Read Reserved (4 bytes)
    let _reserved = cursor.read_u32::<LittleEndian>()?;

    // Read Root Directory Index entries from SuperBlock
    let mut rdi_entries = Vec::new();
    while cursor.position() < 64 {
        let page_number = cursor.read_u32::<LittleEndian>()?;
        rdi_entries.push(page_number);
    }
    println!("Root Directory Index Entries (from SuperBlock): {:?}", rdi_entries);

    // Calculate the number of pages the directory stream spans
    let directory_size = root_stream_size;
    let directory_pages = (directory_size + page_size - 1) / page_size;
    println!("Directory Stream spans {} pages.", directory_pages);

    // Calculate the number of entries needed in the Root Directory Index
    let entries_per_page = page_size / 4; // Number of u32s per page
    let num_rdi_entries = (directory_pages + entries_per_page - 1) / entries_per_page;
    println!("Number of Root Directory Index Entries Needed: {}", num_rdi_entries);

    let mut directory_pages_list = Vec::new();

    if num_rdi_entries <= rdi_entries.len() as u32 {
        // Root Directory Index entries fit in SuperBlock
        println!("Root Directory Index entries fit in the SuperBlock.");
        let rdi_entries_needed = num_rdi_entries as usize;
        let root_dir_index_pages = &rdi_entries[0..rdi_entries_needed];

        println!("Root Directory Index Pages: {:?}", root_dir_index_pages);

        // Read the directory pages list from the Root Directory Index Pages
        directory_pages_list = read_page_number_array(&mut reader, page_size, root_dir_index_pages, directory_pages)?;

    } else {
        // Root Directory Index spans multiple levels
        println!("Root Directory Index entries span multiple levels.");

        // Read the full Root Directory Index entries from pages pointed to by the SuperBlock's RDI entries
        let all_rdi_entries = read_page_number_array(&mut reader, page_size, &rdi_entries, num_rdi_entries)?;

        println!("Root Directory Index Entries: {:?}", all_rdi_entries);

        // Read the directory pages list from the RDI entries
        directory_pages_list = read_page_number_array(&mut reader, page_size, &all_rdi_entries, directory_pages)?;
    }

    // Now, read the root directory stream data
    println!("Directory Pages List: {:?}", directory_pages_list);
    let root_stream_data = read_stream(&mut reader, page_size, &directory_pages_list, root_stream_size)?;

    // Parse the root stream data
    let mut root_stream_cursor = io::Cursor::new(&root_stream_data);

    // Read the number of streams
    let num_streams = root_stream_cursor.read_u32::<LittleEndian>()?;
    println!("Number of Streams: {}", num_streams);

    // Read the sizes of each stream
    let mut stream_sizes = Vec::new();
    for i in 0..num_streams {
        let size = root_stream_cursor.read_i32::<LittleEndian>()?;
        println!("Stream {} Size: {}", i, size);
        stream_sizes.push(size);
    }

    // Read the page lists for each stream
    let mut stream_pages: Vec<Vec<u32>> = Vec::new();
    for (i, &size) in stream_sizes.iter().enumerate() {
        if size == -1 {
            // Stream does not exist
            println!("Stream {} does not exist.", i);
            stream_pages.push(Vec::new());
            continue;
        }

        // Calculate the number of pages for this stream
        let num_pages = (size as u32 + page_size - 1) / page_size;
        println!("Stream {} spans {} pages.", i, num_pages);

        let mut pages = Vec::new();
        for _ in 0..num_pages {
            let page_number = root_stream_cursor.read_u32::<LittleEndian>()?;
            pages.push(page_number);
        }
        println!("Stream {} Pages: {:?}", i, pages);
        stream_pages.push(pages);
    }

    // Now, we can read individual streams as needed
    // For example, let's read the first stream (Stream 0)
    if !stream_pages.is_empty() && !stream_pages[0].is_empty() {
        println!("Reading Stream 0...");
        let stream_size = stream_sizes[0] as u32;
        let stream_data = read_stream(&mut reader, page_size, &stream_pages[0], stream_size)?;

        // Now, we can process stream_data as needed
        println!(
            "Stream 0 Data (first 64 bytes): {:?}",
            &stream_data[..std::cmp::min(64, stream_data.len())]
        );
    }

    // Additional advanced output and technical information
    println!("\n--- Advanced Technical Information ---");

    println!("Total Streams: {}", num_streams);

    for (i, pages) in stream_pages.iter().enumerate() {
        if stream_sizes[i] == -1 {
            continue;
        }

        println!("Stream {}:", i);
        println!("  Size: {} bytes", stream_sizes[i]);
        println!("  Pages: {:?}", pages);
    }

    // Here, you can implement additional logic to parse specific streams like the TPI, DBI, etc.
    // For example, parse the Debug Information Stream (usually stream 3)
    // You can also extract symbol information, type information, and more.

    Ok(())
}

fn read_page_number_array(
    reader: &mut io::BufReader<File>,
    page_size: u32,
    pages: &[u32],
    num_items: u32,
) -> io::Result<Vec<u32>> {
    let mut result = Vec::new();
    let mut items_to_read = num_items;
    let entries_per_page = page_size / 4;
    for &page in pages {
        let page_offset = page as u64 * page_size as u64;
        reader.seek(SeekFrom::Start(page_offset))?;

        // Read the entire page
        let mut buffer = vec![0u8; page_size as usize];
        reader.read_exact(&mut buffer)?;

        let mut cursor = io::Cursor::new(buffer);

        for _ in 0..entries_per_page {
            if items_to_read == 0 {
                break;
            }
            let page_number = cursor.read_u32::<LittleEndian>()?;
            result.push(page_number);
            items_to_read -= 1;
        }

        if items_to_read == 0 {
            break;
        }
    }

    if items_to_read > 0 {
        return Err(io::Error::new(
            io::ErrorKind::UnexpectedEof,
            "Not enough data to read all page number entries.",
        ));
    }

    Ok(result)
}

fn read_stream(
    reader: &mut io::BufReader<File>,
    page_size: u32,
    pages: &[u32],
    stream_size: u32,
) -> io::Result<Vec<u8>> {
    let mut stream_data = vec![0u8; stream_size as usize];
    let mut offset = 0;

    for &page in pages {
        let page_offset = page as u64 * page_size as u64;
        reader.seek(SeekFrom::Start(page_offset))?;

        let bytes_to_read = std::cmp::min(page_size as usize, stream_size as usize - offset);
        let mut buffer = vec![0u8; bytes_to_read];
        reader.read_exact(&mut buffer)?;
        stream_data[offset..offset + bytes_to_read].copy_from_slice(&buffer);
        offset += bytes_to_read;

        if offset >= stream_size as usize {
            break;
        }
    }

    Ok(stream_data)
}