drprg 0.1.1

Drug resistance prediction with reference graphs
Documentation 
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use serde_derive::{Deserialize, Serialize};
use std::path::Path;
use thiserror::Error;

/// A collection of custom errors relating to the working with files for this package.
#[derive(Error, Debug)]
pub enum ConfigError {
    /// Generic I/O error for external dependencies
    #[error("File I/O failed in external dependency")]
    FileError { source: std::io::Error },
    /// Error trying to convert the TOML file to a string
    #[error(transparent)]
    DeserializeError(#[from] toml::de::Error),
}

#[derive(Deserialize, Serialize)]
pub struct Config {
    pub(crate) min_match_len: u32,
    pub(crate) max_nesting: u32,
    pub(crate) k: u32,
    pub(crate) w: u32,
    pub(crate) padding: u32,
    pub(crate) version: String,
}

impl Config {
    pub fn from_path<P: AsRef<Path>>(path: P) -> Result<Self, ConfigError> {
        let contents = std::fs::read_to_string(path)
            .map_err(|source| ConfigError::FileError { source })?;
        toml::from_str(&contents).map_err(ConfigError::DeserializeError)
    }
}