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|
use anyhow::{anyhow, Result};
use irc::client::prelude::*;
use sedregex::ReplaceCommand;
use std::cell::RefCell;
static LOG_MAX_SIZE: usize = 10000;
thread_local!(static LOG: RefCell<Vec::<(String, String)>> = RefCell::new(Vec::with_capacity(LOG_MAX_SIZE)));
thread_local!(static RE: regex::Regex = regex::Regex::new(r"^s/").unwrap());
pub fn log(_bot: &crate::Bot, msg: Message) -> Result<()> {
log_msg(msg)
}
fn log_msg(msg: Message) -> Result<()> {
if let Command::PRIVMSG(_, text) = msg.command.clone() {
LOG.with(|log_cell| {
let mut log = log_cell.borrow_mut();
if log.len() >= LOG_MAX_SIZE {
let _ = log.remove(0);
}
log.push((msg.source_nickname().unwrap().to_string(), text))
});
}
Ok(())
}
pub fn replace(bot: &crate::Bot, msg: Message) -> Result<()> {
match find_and_replace(&msg) {
Ok(res) => {
bot.send_privmsg(msg.response_target().unwrap(), res.as_str())
.unwrap();
Ok(())
}
Err(_) => Ok(()),
}
}
fn find_and_replace(msg: &Message) -> Result<String> {
if let Command::PRIVMSG(_, text) = msg.command.clone() {
let cmd = match ReplaceCommand::new(text.as_str()) {
Ok(cmd) => cmd,
Err(_) => return Err(anyhow!("building replace command failed")),
};
return LOG.with(|log_cell| {
log_cell
.borrow()
.iter()
.rev()
.find(|(_, text)| cmd.expr.is_match(text) && !RE.with(|re| re.is_match(text)))
.and_then(|(nick, text)| Some(format!("<{}> {}", nick, cmd.execute(text))))
.map_or(Err(anyhow!("replace failed")), |v| Ok(v))
});
}
Err(anyhow!("not a privmsg"))
}
#[cfg(test)]
mod tests {
use super::*;
use test::Bencher;
fn populate_log() {
LOG.with(|log_cell| {
let mut log = log_cell.borrow_mut();
log.push((
"user".to_string(),
"this is a long message which will be replaced".to_string(),
));
for _ in 0..LOG_MAX_SIZE - 1 {
log.push((
"user".to_string(),
"this is a long message which doesn't matter".to_string(),
))
}
});
}
#[test]
fn test_log_push_max() {
LOG.with(|log_cell| {
let mut log = log_cell.borrow_mut();
log.push(("user".to_string(), "one".to_string()));
for _ in 0..LOG_MAX_SIZE - 2 {
log.push(("user".to_string(), "two".to_string()))
}
log.push(("user".to_string(), "three".to_string()));
assert_eq!(
log[LOG_MAX_SIZE - 1],
("user".to_string(), "three".to_string())
);
assert_eq!(log[0], ("user".to_string(), "one".to_string()));
});
log_msg(Message::new(Some("user!user@user.com"), "PRIVMSG", vec!["user", "four"]).unwrap())
.unwrap();
LOG.with(|log_cell| {
let log = log_cell.borrow();
assert_eq!(
log[LOG_MAX_SIZE - 1],
("user".to_string(), "four".to_string())
);
assert_eq!(log[0], ("user".to_string(), "two".to_string()));
});
}
#[test]
fn test_log_limit() {
populate_log();
LOG.with(|log_cell| {
let log = log_cell.borrow();
assert_eq!(log.len(), LOG_MAX_SIZE)
});
log_msg(Message {
tags: None,
prefix: Some(Prefix::Nickname(
"user".to_string(),
"username".to_string(),
"userhost".to_string(),
)),
command: Command::PRIVMSG(
"#channel".to_string(),
"this is the 10001th message".to_string(),
),
})
.unwrap();
LOG.with(|log_cell| {
let log = log_cell.borrow();
assert_eq!(log.len(), LOG_MAX_SIZE)
});
}
#[test]
fn test_replace() {
populate_log();
assert_eq!(
find_and_replace(&Message {
tags: None,
prefix: None,
command: Command::PRIVMSG(
"#channel".to_string(),
"s/will be/has been/".to_string(),
),
})
.unwrap(),
"<user> this is a long message which has been replaced"
)
}
#[test]
fn test_replace_complex() {
populate_log();
assert_eq!(
find_and_replace(&Message {
tags: None,
prefix: None,
command: Command::PRIVMSG(
"#channel".to_string(),
"s/(will).*(be)/$2 $1/".to_string(),
),
})
.unwrap(),
"<user> this is a long message which be will replaced"
)
}
#[bench]
fn bench_replace(b: &mut Bencher) {
populate_log();
b.iter(|| {
find_and_replace(&Message {
tags: None,
prefix: None,
command: Command::PRIVMSG(
"#channel".to_string(),
"s/will be/has been/".to_string(),
),
})
});
}
#[bench]
fn bench_replace_complex(b: &mut Bencher) {
populate_log();
b.iter(|| {
find_and_replace(&Message {
tags: None,
prefix: None,
command: Command::PRIVMSG(
"#channel".to_string(),
"s/will be/has been/".to_string(),
),
})
});
}
}
|
