git.delta.rocks / jrsonnet / refs/commits / f44bc09e725c

1use crate::ConfigureState;2use clap::Clap;3use jrsonnet_evaluator::{error::Result, EvaluationState};4use std::str::FromStr;56#[derive(Clone)]7pub struct ExtStr {8	pub name: String,9	pub value: String,10}1112impl FromStr for ExtStr {13	type Err = &'static str;14	fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {15		let out: Vec<_> = s.split('=').collect();16		match out.len() {17			1 => Ok(ExtStr {18				name: out[0].to_owned(),19				value: std::env::var(out[0]).or(Err("missing env var"))?,20			}),21			2 => Ok(ExtStr {22				name: out[0].to_owned(),23				value: out[1].to_owned(),24			}),2526			_ => Err("bad ext-str syntax"),27		}28	}29}3031#[derive(Clap)]32// #[clap(help_heading = "EXTERNAL VARIABLES")]33pub struct ExtVarOpts {34	/// Add string external variable.35	/// External variables are globally available so it is preferred36	/// to use top level arguments whenever it's possible.37	/// If [=data] is not set then it will be read from `name` env variable.38	/// Can be accessed from code via `std.extVar("name")`.39	#[clap(long, short = 'V', name = "name[=var data]", number_of_values = 1)]40	ext_str: Vec<ExtStr>,41	// / Read string external variable from file.42	// / See also `--ext-str`43	// #[clap(long, name = "name[=var path]", number_of_values = 1)]44	// ext_str_file: Vec<ExtStr>,45	/// Add external variable from code.46	/// See also `--ext-str`47	#[clap(long, name = "name[=var source]", number_of_values = 1)]48	ext_code: Vec<ExtStr>,49}50impl ConfigureState for ExtVarOpts {51	fn configure(&self, state: &EvaluationState) -> Result<()> {52		for ext in self.ext_str.iter() {53			state.add_ext_str((&ext.name as &str).into(), (&ext.value as &str).into());54		}55		for ext in self.ext_code.iter() {56			state.add_ext_code((&ext.name as &str).into(), (&ext.value as &str).into())?;57		}58		Ok(())59	}60}