anni-fetch

A library focuses on what git fetch does.

Example

```rust use annifetch::client::Message::PackData; use annifetch::{Pack, Client}; use std::io::Cursor; use anni_fetch::client::RequestBuilder;

fn main() { // create client let client = Client::new("https://github.com/project-anni/repo.git");

// request and get message iterator
let iter = client.request(
    RequestBuilder::new(true)
        .command("fetch")
        .argument("thin-pack")
        .argument("ofs-delta")
        .argument("deepen 1")
        .want(&client.ls_ref("HEAD").expect("failed to get sha1 of HEAD"))
        .argument("done")
        .build()
).unwrap();

// prepare buffer for pack
let mut pack = Vec::new();
for msg in iter {
    match msg {
        // receive and insert into pack
        PackData(mut d) => pack.append(&mut d),
        _ => {}
    }
}
let mut cursor = Cursor::new(pack);

// read pack
Pack::from_reader(&mut cursor).expect("invalid pack file");

} ```