69 lines
1.8 KiB
Rust
69 lines
1.8 KiB
Rust
use std::{fmt::Display, error::Error};
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use arrayvec::{ArrayString, CapacityError};
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use fancy_regex::Regex;
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use lazy_static::lazy_static;
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use sedregex::find_and_replace;
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#[derive(Debug)]
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pub enum SedErrorKind {
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Capacity(CapacityError),
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Regex(fancy_regex::Error),
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SedRegex(sedregex::ErrorKind)
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}
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#[derive(Debug)]
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pub struct SedCapacityError(SedErrorKind);
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impl Display for SedCapacityError {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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// yeah it's ugly but there's no better way afaik
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match &self.0 {
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SedErrorKind::Capacity(e) => Display::fmt(e, f),
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SedErrorKind::Regex(e) => Display::fmt(e, f),
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SedErrorKind::SedRegex(e) => Display::fmt(e, f),
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}
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}
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}
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impl Error for SedCapacityError {}
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impl<T> From<CapacityError<T>> for SedCapacityError {
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fn from(e: CapacityError<T>) -> Self {
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Self { 0: SedErrorKind::Capacity(e.simplify()) }
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}
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}
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impl From<fancy_regex::Error> for SedCapacityError {
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fn from(e: fancy_regex::Error) -> Self {
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Self { 0: SedErrorKind::Regex(e) }
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}
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}
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impl From<sedregex::ErrorKind> for SedCapacityError {
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fn from(e: sedregex::ErrorKind) -> Self {
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Self { 0: SedErrorKind::SedRegex(e) }
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}
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}
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type SedResult = Result<Option<ArrayString<512>>, SedCapacityError>;
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pub fn resolve(prev_msg: &str, cmd: &str) -> SedResult {
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lazy_static! {
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static ref RE: Regex = Regex::new(r"^s/.*/.*").unwrap(); // yes this regex is valid, don't worry about it
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}
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if RE.is_match(cmd)? {
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if let Some(mat) = RE.find(cmd)? {
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let slice = &cmd[mat.start()..mat.end()];
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let formatted = find_and_replace(&prev_msg, [slice])?;
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return Ok(Some(ArrayString::from(&formatted)?));
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} else {
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return Ok(None);
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}
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}
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Ok(None)
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} |