5d44df3af6
arglib is the simple idea of passing structured data via a conventional environment variable instead of implementing an optparser for every little tool. Pop the envvar, decode the contents, return the contents. Change-Id: Ie44148293a58aae9a0a613895176227d43b491bb Reviewed-on: https://cl.tvl.fyi/c/depot/+/2449 Tested-by: BuildkiteCI Reviewed-by: Profpatsch <mail@profpatsch.de>
53 lines
1.6 KiB
Rust
53 lines
1.6 KiB
Rust
extern crate netencode;
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extern crate mustache;
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extern crate arglib_netencode;
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use mustache::{Data};
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use netencode::{T};
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use std::collections::HashMap;
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use std::os::unix::ffi::{OsStrExt};
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use std::io::{Read};
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fn netencode_to_mustache_data_dwim(t: T) -> Data {
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match t {
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// TODO: good idea?
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T::Unit => Data::Null,
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T::N1(b) => Data::Bool(b),
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T::N3(u) => Data::String(u.to_string()),
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T::N6(u) => Data::String(u.to_string()),
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T::N7(u) => Data::String(u.to_string()),
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T::I3(i) => Data::String(i.to_string()),
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T::I6(i) => Data::String(i.to_string()),
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T::I7(i) => Data::String(i.to_string()),
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T::Text(s) => Data::String(s),
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T::Binary(b) => unimplemented!(),
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T::Sum(tag) => unimplemented!(),
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T::Record(xs) => Data::Map(
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xs.into_iter()
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.map(|(key, val)| (key, netencode_to_mustache_data_dwim(val)))
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.collect::<HashMap<_,_>>()
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),
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T::List(xs) => Data::Vec(
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xs.into_iter()
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.map(|x| netencode_to_mustache_data_dwim(x))
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.collect::<Vec<_>>()
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),
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}
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}
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pub fn from_stdin() -> () {
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let data = netencode_to_mustache_data_dwim(
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arglib_netencode::arglib_netencode(Some(std::ffi::OsStr::new("TEMPLATE_DATA"))).unwrap()
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);
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let mut stdin = String::new();
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std::io::stdin().read_to_string(&mut stdin).unwrap();
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mustache::compile_str(&stdin)
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.and_then(|templ| templ.render_data(
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&mut std::io::stdout(),
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&data
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)).unwrap()
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}
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pub fn main() {
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from_stdin()
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}
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