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#![feature(assoc_unix_epoch)]
extern crate serde;
extern crate serde_json;
#[macro_use] extern crate serde_derive;
extern crate glob;
extern crate pbr;
extern crate reqwest;
extern crate clap;
extern crate git2;
use glob::{glob_with, MatchOptions};
use pbr::ProgressBar;
use reqwest::Client;
use clap::{Arg, App};
use git2::Repository;
use std::time::SystemTime;
use std::fs::{File, create_dir_all};
use std::io::{BufReader, BufWriter, BufRead, Write};
use std::path::{Path, PathBuf};
use std::collections::HashMap;
use std::error::Error;
#[derive(Debug, Deserialize)]
struct CrateDep {
name: String,
req: String,
features: Vec<String>,
optional: bool,
default_features: bool,
target: Option<String>,
kind: Option<String>,
}
#[derive(Debug, Deserialize)]
struct Crate {
name: String,
vers: String,
deps: Vec<CrateDep>,
yanked: bool,
cksum: String,
features: HashMap<String, Vec<String>>,
}
fn read_crate_file<P>(path: P)
-> Result<Vec<Crate>, Box<Error>>
where P: AsRef<Path>
{
let file = BufReader::new(File::open(path)?);
let lines: Result<Vec<_>, _> = file.lines()
.map(|line| serde_json::from_str(&line.unwrap()))
.collect();
Ok(lines?)
}
fn mirror_path<P>(base: P, cr: Crate) -> PathBuf
where PathBuf: From<P>
{
let mut path = PathBuf::from(base);
path.push("api/v1/crates");
path.push(&cr.name);
path.push(&cr.vers);
if ! path.exists() {
create_dir_all(&path).unwrap();
}
path.push("download");
path
}
fn missing_path(path: &PathBuf) -> bool {
! path.exists()
}
fn download_crates(paths: &[PathBuf])
-> Result<(), Box<Error>>
{
let mut pb = ProgressBar::new(paths.len() as u64);
let client = Client::new();
for path in paths {
let mut file = BufWriter::new(File::create(&path)?);
let uri = format!("https://crates.io/{}", path.to_str().unwrap());
let mut resp = client.get(&uri).send()?;
if resp.status().is_success() {
resp.copy_to(&mut file)?;
} else {
panic!("failed to download {}", uri);
}
pb.inc();
}
Ok(())
}
fn clone_index<P>(path: P) -> Result<(), Box<Error>>
where P: AsRef<Path>
{
eprintln!("cloning index...");
let _repo = Repository::clone("https://github.com/rust-lang/crates.io-index.git", path)?;
eprintln!("done");
Ok(())
}
fn pull_index<P>(path: P) -> Result<(), Box<Error>>
where P: AsRef<Path>
{
let repo = Repository::open(path)?;
let mut remote = repo.find_remote("origin")?;
remote.fetch(&["master"], None, None)?;
let oid = repo.refname_to_id("refs/remotes/origin/master")?;
let object = repo.find_object(oid, None).unwrap();
repo.reset(&object, git2::ResetType::Hard, None)?;
Ok(())
}
fn main() {
let args = App::new("download-crates")
.arg(Arg::with_name("OUTPUT")
.help("Mirror output directory")
.index(1)
.takes_value(true))
.get_matches();
let mirror_base = PathBuf::from(args.value_of("OUTPUT").unwrap_or("."));
if ! mirror_base.exists() {
create_dir_all(&mirror_base).expect("unable to create output directory");
}
let index = {
let mut p = mirror_base.clone();
p.push("crates.io-index");
p
};
let indexglob = {
let mut p = index.clone();
p.push("*");
p.push("**");
p.push("*");
String::from(p.to_str().unwrap())
};
let newfilesfn = {
let epoch = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap();
let mut p = mirror_base.clone();
p.push(&format!("new-files-{}", epoch.as_secs()));
p
};
let mut newfiles = BufWriter::new(File::create(&newfilesfn).unwrap());
if ! index.exists() {
clone_index(&index).expect("unable to clone index");
} else {
pull_index(&index).expect("unable to pull index");
}
let opts = MatchOptions {
case_sensitive: false,
require_literal_separator: false,
require_literal_leading_dot: true
};
let paths: Vec<_> = glob_with(&indexglob, &opts).unwrap()
.filter_map(|p| p.ok())
.filter(|p| p.is_file())
.flat_map(|p| read_crate_file(p).unwrap())
.map(|p| mirror_path(&mirror_base, p))
.filter(missing_path)
.collect();
download_crates(&paths).expect("downloading crates failed");
for path in paths {
writeln!(&mut newfiles, "{}", path.to_str().unwrap()).unwrap();
}
println!("List of new files written to {}", newfilesfn.to_str().unwrap());
}
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