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use { std::{ num::ParseIntError, str::FromStr, }, thiserror::Error, }; #[derive(Debug, Error)] pub enum StatusFilterParseError { #[error("invalid int")] ParseInt(#[from] ParseIntError), } #[derive(Debug, Clone)] pub struct StatusFilter { ranges: Vec<(u16, u16)>, } impl StatusFilter { pub fn contains(&self, status: u16) -> bool { for range in &self.ranges { if range.0 <= status && status <= range.1 { return true; } } false } } impl FromStr for StatusFilter { type Err= StatusFilterParseError; fn from_str(value: &str) -> Result<Self, StatusFilterParseError> { let ranges: Result<Vec<(u16, u16)>, StatusFilterParseError> = value .split(',') .map(|s| { Ok(match s { "2xx" => (200, 299), "3xx" => (300, 399), "4xx" => (400, 499), "5xx" => (500, 599), s if s.contains('-') => { let mut tokens = s.split('-'); ( tokens.next().unwrap().parse()?, tokens.next().unwrap().parse()? ) } s => { let v = s.parse()?; (v, v) } }) }) .collect(); let ranges = ranges?; Ok(Self { ranges }) } } #[cfg(test)] mod status_filter_tests { use super::*; #[test] fn test_status_filter() { let sf = StatusFilter::from_str("400").unwrap(); assert_eq!(sf.contains(400), true); assert_eq!(sf.contains(401), false); let sf = StatusFilter::from_str("2xx,405-512").unwrap(); assert_eq!(sf.contains(200), true); assert_eq!(sf.contains(299), true); assert_eq!(sf.contains(300), false); assert_eq!(sf.contains(400), false); assert_eq!(sf.contains(405), true); assert_eq!(sf.contains(512), true); assert_eq!(sf.contains(513), false); } }