badpod 0.9.1

A Rust crate for working with imperfect feeds of podcasts.
Documentation
use crate::utils;
use crate::Other;
use strum::EnumIter;

/// Allowed purposes for [Txt](crate::podcast::Txt).
#[derive(Debug, PartialEq, Eq, EnumIter)]
pub enum Purpose {
    Verify,

    Other(Other),
}

impl std::str::FromStr for Purpose {
    type Err = String;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match utils::from_str_exact(s) {
            Some(variant) => Ok(variant),
            None => Ok(Self::Other((
                s.to_string(),
                "should be \"verify\"".to_string(),
            ))),
        }
    }
}

impl std::fmt::Display for Purpose {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::Other((s, _)) => write!(f, "{s}"),
            _ => {
                let s = format!("{self:?}");
                write!(f, "{}", s.to_lowercase())
            }
        }
    }
}

impl Purpose {
    pub fn parse(s: &str) -> Self {
        match s.parse() {
            Ok(purpose) => purpose,
            Err(e) => Self::Other((s.to_string(), e)),
        }
    }
}