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+walkdir = "*" diff --git a/src/main.rs b/src/main.rs index e7a11a9..41aa92e 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,3 +1,227 @@ -fn main() { - println!("Hello, world!"); +extern crate clap; +extern crate term; +extern crate sha2; +extern crate walkdir; + +use sha2::{Sha256, Digest}; + +use std::path::Path; +use std::process; +use std::fs; +use std::io::Read; +use walkdir::WalkDir; + +const BUFFER_SIZE: usize = 1024; + +/* Note for myself : CLAP = _C_ommand _L_ine _A_rgument _P_arser */ +use clap::{Arg,ArgMatches, App}; + +struct Args { + input: String, + output: String, + vlevel: u8, + dryrun: bool, +} + +impl Args { + fn new(matches: ArgMatches) -> Args { + let i = matches.value_of("source").unwrap(); + let o = matches.value_of("dest").unwrap(); + + let vl = match matches.occurrences_of("verbose") { + 0 => 0, + 1 => 1, + 2 => 2, + 3 | _ => 3, + }; + let dr = matches.is_present("dry-run"); + + Args { + input: i.to_string(), + output: o.to_string(), + vlevel: vl, + dryrun: dr, + } + } + + fn path_exist(&self) -> bool { + let mut result = true; + if ! Path::new(&self.input).exists() { + result = false; + println!("Error, input ( {} ) is not a valid directory", self.input); + } + + if ! Path::new(&self.output).exists() { + result = false; + println!("Error, output ({} ) is not a valid directory", self.output); + } + + result + } + + fn check_not_same(&self) -> bool { + if self.input == self.output { + false + } else { + true + } + } + + fn check_not_parent(&self) -> bool { + let vec = vec![&self.input, &self.output]; + + for (i, x) in vec.iter().enumerate() { + let mut a = Path::new(x); + let tmp = match i { + 0 => &self.output, + 1 => &self.input, + _ => "None", + }; + loop { + let b = a.parent(); + a = match b { + Some(b) => { + if b.to_str().unwrap() == tmp { + return false; + } + b + }, + None => break, + }; + } + } + true + } +} + + +fn main() { + let mut t = term::stdout().unwrap(); + let matches = App::new("rdupe") + .version("0.1.0") + .author("Beneth ") + .about("Symlink identical files from source to dest based on hash") + .arg(Arg::with_name("source") + .help("Input1 directory (will keep the real file)") + .short("i") + .long("input") + .takes_value(true) + .required(true) + ) + .arg(Arg::with_name("dest") + .help("destination directory (will be symlink to real file)") + .short("o") + .long("dest") + .takes_value(true) + .required(true) + ) + .arg(Arg::with_name("dry-run") + .short("d") + .long("dry-run") + .help("Dry run (Compare hash but do not symlink)") + ) + .arg(Arg::with_name("verbose") + .short("v") + .long("verbose") + .multiple(true) + .help("Sets the level of verbosity") + ) + .get_matches(); + + t.fg(term::color::GREEN).unwrap(); + let args = Args::new(matches); + + println!("Value for input: {}", args.input); + println!("Value for output: {}", args.output); + println!("Verbosity Level: {}", args.vlevel); + + if args.dryrun == true { + println!("dry-run enabled"); + } else { + if args.vlevel >= 2 { + t.fg(term::color::RED).unwrap(); + println!("dry-run not enabled"); + t.reset().unwrap(); + } + } + + // Check input & output + // 1 - Existence + if ! args.path_exist() { + println!("Exiting: Path 1 or Path 2 does not exist"); + process::exit(1); + } + + // 2 - Not the same path + if ! args.check_not_same() { + println!("Exiting: input and output are the same"); + process::exit(1); + } + + // 3 - Coherence (Path1|2 does not contain path1|2) + if ! args.check_not_parent() { + println!("Exiting: Path1 or Path2 are parent !"); + process::exit(1); + } + + // Output + for entry in WalkDir::new(&args.output).into_iter().filter_map(|e| e.ok()) { + //println!("[O] {}", entry.path().display()); + + // symlink_metadata does not follow symlink :-] + let metadata = fs::symlink_metadata(entry.path()).unwrap(); + let ft = metadata.file_type(); + + if ft.is_file() { + //println!("[I] Name: {}", entry.path().display()); + + if let Ok(mut file) = fs::File::open(&entry.path()) { + process::(&mut file, + &format!("{}", entry.path().display())); + } + } + } + + // let inputs = fs::read_dir(&args.input).unwrap(); + // for path in inputs { + // let path_str = path.unwrap().path().into_os_string().into_string().unwrap(); + // println!("[I] Name: {}", path_str); + + // if let Ok(mut file) = fs::File::open(&path_str) { + // process::(&mut file, + // &path_str); + // } + // } + + t.reset().unwrap(); + t.fg(term::color::CYAN).unwrap(); + println!("Cheers !"); +} + + +/// From https://github.com/RustCrypto/hashes/blob/master/sha2/examples/sha256sum.rs +/// Compute digest value for given `Reader` and print it +/// On any error simply return without doing anything +fn process(reader: &mut R, name: &str) { + let mut sh = D::default(); + let mut buffer = [0u8; BUFFER_SIZE]; + loop { + let n = match reader.read(&mut buffer) { + Ok(n) => n, + Err(_) => return, + }; + sh.input(&buffer[..n]); + if n == 0 || n < BUFFER_SIZE { + break; + } + } + print_result(&sh.result(), name); +} + +/// Print digest result as hex string and name pair +fn print_result(sum: &[u8], name: &str) { + for byte in sum { + print!("{:02x}", byte); + } + println!("\t{}", name); }