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feat(users/Profpatsch/netstring): add rust to_netstring

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Change-Id: I539472fc9ebc3ebe6c34e01fde9c08d3e2e3558c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2431
Reviewed-by: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI
This commit is contained in:
Profpatsch 2021-01-23 16:17:01 +01:00
parent ea9982d9ea
commit cc3f54a0ee
3 changed files with 47 additions and 22 deletions
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20
users/Profpatsch/tree-sitter.nix
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@ -60,9 +60,13 @@ let
watch-file-modified = depot.users.Profpatsch.writers.rustSimple {
name = "watch-file-modified";
dependencies = [ depot.users.Profpatsch.rust-crates.inotify ];
dependencies = [
depot.users.Profpatsch.rust-crates.inotify
depot.users.Profpatsch.netstring.rust-netstring
];
} ''
extern crate inotify;
extern crate netstring;
use inotify::{EventMask, WatchMask, Inotify};
use std::io::Write;
@ -79,18 +83,6 @@ let
)
.expect("Failed to add inotify watch");
fn to_netstring(s: &[u8]) -> Vec<u8> {
let len = s.len();
// length of the integer as ascii
let i_len = ((len as f64).log10() as usize) + 1;
let ns_len = i_len + 1 + len + 1;
let mut res = Vec::with_capacity(ns_len);
res.extend_from_slice(format!("{}:", len).as_bytes());
res.extend_from_slice(s);
res.push(b',');
res
}
let mut buffer = [0u8; 4096];
loop {
let events = inotify
@ -99,7 +91,7 @@ let
for event in events {
if event.wd == file_watch {
std::io::stdout().write(&to_netstring(file.as_bytes()));
std::io::stdout().write(&netstring::to_netstring(file.as_bytes()));
std::io::stdout().flush();
}
}