Crate rust_par2 

Pure Rust PAR2 verify and repair.

The first Rust crate with full PAR2 repair support. Implements GF(2^16) arithmetic with the PAR2-mandated polynomial 0x1100B and Reed-Solomon decoding for block-level repair.

Usage

use std::path::Path;

let par2_path = Path::new("/downloads/movie/movie.par2");
let job_dir = Path::new("/downloads/movie");

// Parse the PAR2 index file
let file_set = rust_par2::parse(par2_path).unwrap();

// Verify all files
let result = rust_par2::verify(&file_set, job_dir);

if result.all_correct() {
    println!("All files intact");
} else if result.repair_possible {
    // Repair damaged/missing files
    let repair = rust_par2::repair(&file_set, job_dir).unwrap();
    println!("{repair}");
}

Re-exports

pub use repair::RepairError;

pub use repair::RepairResult;

pub use repair::repair;

pub use repair::repair_from_verify;

pub use repair::repair_from_verify_no_reverify;

pub use types::DamagedFile;

pub use types::Md5Hash;

pub use types::MissingFile;

pub use types::Par2File;

pub use types::Par2FileSet;

pub use types::SliceChecksum;

pub use types::VerifiedFile;

pub use types::VerifyResult;

Modules

gf

GF(2^16) Galois field arithmetic.

gf_simd

SIMD-accelerated GF(2^16) buffer operations.

gf_simd_public

Re-export SIMD functions for benchmarks.

matrix

Matrix operations over GF(2^16) for Reed-Solomon decoding.

recovery

Recovery block reading from PAR2 volume files.

repair

PAR2 repair engine.

types

Data types for PAR2 file sets.

Enums

ParseError

Errors that can occur while parsing PAR2 files.

Functions

compute_hash_16k

Compute the MD5 hash of the first 16 KiB of a file.

parse

Parse a PAR2 file and return the complete file set metadata.

parse_par2_reader

Parse PAR2 packets from any Read + Seek source.

verify

Verify all files in a PAR2 set against actual files in a directory.