60 lines
1.3 KiB
Rust
60 lines
1.3 KiB
Rust
use clap::Parser;
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use std::fs;
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use std::fs::File;
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use std::io::BufReader;
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use std::io::prelude::*;
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use std::process;
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#[derive(Parser, Debug)]
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#[clap(author, version, about, long_about = None)]
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struct Args {
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/// file A
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file_a: String,
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/// file B
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file_b: String,
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}
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fn main() {
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let args = Args::parse();
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let size_a = fs::metadata(&args.file_a).unwrap().len();
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let size_b = fs::metadata(&args.file_b).unwrap().len();
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if size_a != size_b {
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println!("Files have different sizes.");
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process::exit(1);
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}
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let handle_a = File::open(&args.file_a).unwrap();
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let handle_b = File::open(&args.file_b).unwrap();
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let mut reader_a = BufReader::new(handle_a);
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let mut reader_b = BufReader::new(handle_b);
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let mut buf_a = [0; 1024];
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let mut buf_b = [0; 1024];
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loop {
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let len_a = reader_a.read(&mut buf_a).unwrap();
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let len_b = reader_b.read(&mut buf_b).unwrap();
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if len_a == 0 && len_b == 0 {
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break;
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}
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if len_a != len_b {
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println!("Files are NOT equal.");
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process::exit(2);
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}
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if buf_a != buf_b {
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println!("Files are NOT equal.");
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process::exit(3);
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}
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}
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println!("Files are equal.");
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process::exit(0);
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}
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