51 lines
1.4 KiB
Rust
51 lines
1.4 KiB
Rust
use std::path::Path;
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use miette::Diagnostic;
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use thiserror::Error;
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pub(crate) use dhall::deser_option;
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pub use dhall::{Config, MachineDescription, ModuleConfig};
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mod dhall;
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#[derive(Debug, Error, Diagnostic)]
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pub enum ConfigError {
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#[error("The config file '{0}' does not exist or is not readable")]
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#[diagnostic(
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code(config::notfound),
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help("Make sure the config file and the directory it's in are readable by the user running bffh")
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)]
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NotFound(String),
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#[error("The path '{0}' does not point to a file")]
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#[diagnostic(
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code(config::notafile),
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help("The config must be a file in the dhall format")
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)]
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NotAFile(String),
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#[error("failed to parse config: {0}")]
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#[diagnostic(code(config::parse))]
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Parse(
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#[from]
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#[source]
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serde_dhall::Error,
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),
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}
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pub fn read(file: impl AsRef<Path>) -> Result<Config, ConfigError> {
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let path = file.as_ref();
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if !path.exists() {
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return Err(ConfigError::NotFound(path.to_string_lossy().to_string()));
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}
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if !path.is_file() {
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return Err(ConfigError::NotAFile(path.to_string_lossy().to_string()));
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}
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let mut config = dhall::read_config_file(file)?;
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for (envvar, value) in std::env::vars() {
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match envvar.as_str() {
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// Do things like this?
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// "BFFH_LOG" => config.logging.filter = Some(value),
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_ => {}
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}
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}
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Ok(config)
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}
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