From 0c352ad4e0269e3ca34ec27ed2c7b14693843208 Mon Sep 17 00:00:00 2001 From: WildEgo Date: Sun, 23 Nov 2025 20:19:48 +0000 Subject: [PATCH] Initial commit. --- .gitignore | 1 + Cargo.lock | 226 ++++++++++++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 12 +++ src/main.rs | 55 +++++++++++++ 4 files changed, 294 insertions(+) create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 src/main.rs diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..ea8c4bf --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +/target diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..d26e51f --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,226 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 4 + +[[package]] +name = "crossbeam-deque" +version = "0.8.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = 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+edition = "2024" + +[dependencies] +serde = { version = "1", features = ["derive"] } +serde_json = "1" +xxhash-rust = { version = "0.8.15", features = ["xxh3"] } +rayon = "1.10" +memmap2 = "0.9" +walkdir = "2.3" diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..6b10a06 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,55 @@ +use memmap2::Mmap; +use rayon::prelude::*; +use serde_json::json; +use std::{ + collections::BTreeMap, + env, fs, + fs::File, + path::{Path, PathBuf}, + sync::Mutex, +}; +use walkdir::WalkDir; +use xxhash_rust::xxh3::xxh3_64; + +fn hash_file(path: &Path) -> (String, String) { + let file = File::open(path).expect("Failed to open file"); + let mmap = unsafe { Mmap::map(&file).expect("Failed to mmap file") }; + let hash = xxh3_64(&mmap); + let hash_str = hash.to_string(); + + let filename = path.file_name().unwrap().to_string_lossy().to_string(); + (filename, hash_str) +} + +fn collect_files(folder: &Path) -> Vec { + WalkDir::new(folder) + .into_iter() + .filter_map(|e| e.ok()) + .filter(|e| e.path().is_file()) + .map(|e| e.path().to_path_buf()) + .collect() +} + +fn main() -> std::io::Result<()> { + let args: Vec = env::args().collect(); + if args.len() != 2 { + eprintln!("Usage: {} ", args[0]); + std::process::exit(1); + } + + let folder = Path::new(&args[1]); + if !folder.is_dir() { + eprintln!("Error: '{}' is not a directory", folder.display()); + std::process::exit(1); + } + + let files = collect_files(folder); + + let results: BTreeMap = files.par_iter().map(|f| hash_file(f)).collect(); + + let json_output = json!({ "checksums": results }); + + fs::write("checksum", serde_json::to_string_pretty(&json_output)?)?; + println!("Done! JSON saved to 'checksum'"); + Ok(()) +}