63 lines
1.5 KiB
Rust
63 lines
1.5 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 SedError {
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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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impl Display for SedError {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Self::Capacity(e) => e.fmt(f),
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Self::Regex(e) => e.fmt(f),
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Self::SedRegex(e) => e.fmt(f),
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}
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}
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}
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impl Error for SedError {}
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impl<T> From<CapacityError<T>> for SedError {
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fn from(e: CapacityError<T>) -> Self {
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Self::Capacity(e.simplify())
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}
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}
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impl From<fancy_regex::Error> for SedError {
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fn from(e: fancy_regex::Error) -> Self {
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Self::Regex(e)
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}
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}
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impl From<sedregex::ErrorKind> for SedError {
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fn from(e: sedregex::ErrorKind) -> Self {
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Self::SedRegex(e)
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}
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}
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type SedResult = Result<Option<ArrayString<512>>, SedError>;
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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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return 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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Ok(Some(ArrayString::from(&formatted)?))
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} else {
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Ok(None)
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}
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}
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Ok(None)
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} |