git.delta.rocks / jrsonnet / refs/commits / 814b019b0248

1use crate::ConfigureState;2use clap::Clap;3use jrsonnet_evaluator::{error::Result, EvaluationState};4use std::{fs::read_to_string, 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(Clone)]32pub struct ExtFile {33	pub name: String,34	pub value: String,35}3637impl FromStr for ExtFile {38	type Err = String;3940	fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {41		let out: Vec<&str> = s.split('=').collect();42		if out.len() != 2 {43			return Err("bad ext-file syntax".to_owned());44		}45		let file = read_to_string(&out[1]);46		match file {47			Ok(content) => Ok(Self {48				name: out[0].into(),49				value: content,50			}),51			Err(e) => Err(format!("{}", e)),52		}53	}54}5556#[derive(Clap)]57#[clap(help_heading = "EXTERNAL VARIABLES")]58pub struct ExtVarOpts {59	/// Add string external variable.60	/// External variables are globally available so it is preferred61	/// to use top level arguments whenever it's possible.62	/// If [=data] is not set then it will be read from `name` env variable.63	/// Can be accessed from code via `std.extVar("name")`.64	#[clap(long, short = 'V', name = "name[=var data]", number_of_values = 1)]65	ext_str: Vec<ExtStr>,66	/// Read string external variable from file.67	/// See also `--ext-str`68	#[clap(long, name = "name=var path", number_of_values = 1)]69	ext_str_file: Vec<ExtFile>,70	/// Add external variable from code.71	/// See also `--ext-str`72	#[clap(long, name = "name[=var source]", number_of_values = 1)]73	ext_code: Vec<ExtStr>,74	/// Read string external variable from file.75	/// See also `--ext-str`76	#[clap(long, name = "name=var code path", number_of_values = 1)]77	ext_code_file: Vec<ExtFile>,78}79impl ConfigureState for ExtVarOpts {80	fn configure(&self, state: &EvaluationState) -> Result<()> {81		for ext in self.ext_str.iter() {82			state.add_ext_str((&ext.name as &str).into(), (&ext.value as &str).into());83		}84		for ext in self.ext_str_file.iter() {85			state.add_ext_str((&ext.name as &str).into(), (&ext.value as &str).into());86		}87		for ext in self.ext_code.iter() {88			state.add_ext_code((&ext.name as &str).into(), (&ext.value as &str).into())?;89		}90		for ext in self.ext_code_file.iter() {91			state.add_ext_code((&ext.name as &str).into(), (&ext.value as &str).into())?;92		}93		Ok(())94	}95}