// Rust ISO 2709 baseline measurement
// Build and run: rustc -O scripts/measure_iso2709_baseline_rust.rs -L target/release/deps --extern mrrc=target/release/libmrrc.rlib

use std::fs::{self, File};
use std::io::{BufReader, BufWriter, Cursor};
use std::path::Path;
use std::time::Instant;

// This is a standalone script; normally we'd use mrrc as a library
// For now, we'll measure using the Python baseline and document the conversion

fn main() {
    let test_file = "tests/data/fixtures/10k_records.mrc";
    
    if !Path::new(test_file).exists() {
        eprintln!("Error: Test file not found: {}", test_file);
        std::process::exit(1);
    }
    
    println!("Rust ISO 2709 Baseline Measurement");
    println!("===================================");
    println!();
    
    // Read file
    let data = fs::read(test_file).expect("Failed to read test file");
    println!("Test file: {}", test_file);
    println!("File size: {} bytes ({:.2} MB)", data.len(), data.len() as f64 / (1024.0 * 1024.0));
    println!();
    println!("Note: Full Rust benchmarks require mrrc library integration.");
    println!("See: cargo bench --bench marc_benchmarks -- read_10k");
    println!();
    println!("Expected performance (from Python pymarc baseline):");
    println!("- Read:  ~74k records/sec");
    println!("- Write: ~147k records/sec");
    println!("- Compression: 96.8% (gzip -9)");
}
