eb41eef612
I think it’s solid enough to use in a wider context. Change-Id: If53e8bbb6b90fa88d73fb42730db470e822ea182 Reviewed-on: https://cl.tvl.fyi/c/depot/+/3055 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org> Reviewed-by: lukegb <lukegb@tvl.fyi>
51 lines
1.4 KiB
Nix
51 lines
1.4 KiB
Nix
{ lib, pkgs, depot, ... }:
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let
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python-netstring = depot.users.Profpatsch.writers.python3Lib {
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name = "netstring";
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} ''
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def read_netstring(bytes):
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(int_length, rest) = bytes.split(sep=b':', maxsplit=1)
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val = rest[:int(int_length)]
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# has to end on a ,
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assert(rest[len(val)] == ord(','))
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return (val, rest[len(val) + 1:])
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def read_netstring_key_val(bytes):
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(keyvalnet, rest) = read_netstring(bytes)
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(key, valnet) = read_netstring(keyvalnet)
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(val, nothing) = read_netstring(valnet)
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assert(nothing == b"")
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return (key, val, rest)
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def read_netstring_key_val_list(bytes):
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rest = bytes
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res = {}
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while rest != b"":
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(key, val, r) = read_netstring_key_val(rest)
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rest = r
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res[key] = val
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return res
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'';
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rust-netstring = depot.nix.writers.rustSimpleLib {
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name = "netstring";
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} ''
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pub fn to_netstring(s: &[u8]) -> Vec<u8> {
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let len = s.len();
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// length of the integer as ascii
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let i_len = ((len as f64).log10() as usize) + 1;
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let ns_len = i_len + 1 + len + 1;
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let mut res = Vec::with_capacity(ns_len);
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res.extend_from_slice(format!("{}:", len).as_bytes());
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res.extend_from_slice(s);
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res.push(b',');
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res
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}
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'';
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in depot.nix.utils.drvTargets {
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inherit
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python-netstring
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rust-netstring
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;
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}
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