zstd 0.1.10

Rust zstd bindings library.
Documentation 
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extern crate zstd;
#[macro_use]
extern crate clap;

use std::io;

use clap::{App, Arg};

// This program trains a dictionary from one or more files,
// to make future compression of similar small files more efficient.
//
// The dictionary will need to be present during decompression,
// but it you need to compress many small files individually,
// it may be worth the trouble.
fn main() {
    let matches = App::new("train")
        .author("Alexandre Bury <alexandre.bury@gmail.com>")
        .about("A zstd dict trainer")
        .arg(Arg::with_name("MAX_SIZE")
             .help("Maximum dictionary size in bytes")
             .short("s")
             .long("max_size")
             .takes_value(true))
        .arg(Arg::with_name("FILE")
             .help("Files to use as input")
             .required(true)
             .multiple(true))
        .get_matches();

    let size = value_t!(matches, "MAX_SIZE", usize).unwrap_or(110 * 1024);

    let files: Vec<_> = matches.values_of("FILE").unwrap().collect();

    let dict = zstd::dict::from_files(&files, size).unwrap();

    let mut dict_reader: &[u8] = &dict;
    io::copy(&mut dict_reader, &mut io::stdout()).unwrap();
}