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// Copyright (C) 2022-2022 Fuwn <[email protected]>
// SPDX-License-Identifier: GPL-3.0-only
//! Much help from:
//!
//! - <https://github.com/rust-lang/git2-rs/blob/master/examples/clone.rs>
#![deny(
warnings,
nonstandard_style,
unused,
future_incompatible,
rust_2018_idioms,
unsafe_code
)]
#![deny(clippy::all, clippy::nursery, clippy::pedantic)]
#![recursion_limit = "128"]
#![doc(
html_logo_url = "https://emojipedia-us.s3.dualstack.us-west-1.amazonaws.com/thumbs/160/twitter/282/ribbon_1f380.png",
html_favicon_url = "https://emojipedia-us.s3.dualstack.us-west-1.amazonaws.com/thumbs/160/twitter/282/ribbon_1f380.png"
)]
use std::{io::Write, path};
struct State {
progress: Option<git2::Progress<'static>>,
total: usize,
current: usize,
path: Option<path::PathBuf>,
newline: bool,
}
fn print(state: &mut State) {
let git_stats = state.progress.as_ref().unwrap();
let network_pct = (100 * git_stats.received_objects()) / git_stats.total_objects();
let index_pct = (100 * git_stats.indexed_objects()) / git_stats.total_objects();
let co_pct = if state.total > 0 {
(100 * state.current) / state.total
} else {
0
};
let kbytes = git_stats.received_bytes() / 1024;
if git_stats.received_objects() == git_stats.total_objects() {
if !state.newline {
println!();
state.newline = true;
}
print!(
"Resolving deltas {}/{}\r",
git_stats.indexed_deltas(),
git_stats.total_deltas()
);
} else {
print!(
"net {:3}% ({:4} kb, {:5}/{:5}) / idx {:3}% ({:5}/{:5}) / chk {:3}% ({:4}/{:4}) {}\r",
network_pct,
kbytes,
git_stats.received_objects(),
git_stats.total_objects(),
index_pct,
git_stats.indexed_objects(),
git_stats.total_objects(),
co_pct,
state.current,
state.total,
state
.path
.as_ref()
.map(|s| s.to_string_lossy().into_owned())
.unwrap_or_default()
);
}
std::io::stdout().flush().unwrap();
}
/// # Errors
/// never
pub fn clone(url: &str, path: &str) -> Result<(), git2::Error> {
let state = std::cell::RefCell::new(State {
progress: None,
total: 0,
current: 0,
path: None,
newline: false,
});
let mut cb = git2::RemoteCallbacks::new();
cb.transfer_progress(|stats| {
let mut state = state.borrow_mut();
state.progress = Some(stats.to_owned());
print(&mut *state);
true
});
let mut co = git2::build::CheckoutBuilder::new();
co.progress(|path, cur, total| {
let mut state = state.borrow_mut();
state.path = path.map(path::Path::to_path_buf);
state.current = cur;
state.total = total;
print(&mut *state);
});
let mut fo = git2::FetchOptions::new();
fo.remote_callbacks(cb);
git2::build::RepoBuilder::new()
.fetch_options(fo)
.with_checkout(co)
.clone(url, path::Path::new(path))?;
println!();
Ok(())
}
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