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use std::io::{ self, BufRead, Write };
use std::borrow::ToOwned;
use log::Event;
use format::{ Encode, Decode };
use regex::Regex;
use chrono::*;
pub struct Weechat3;
static NORMAL_LINE: Regex = regex!(r"^(\d+-\d+-\d+ \d+:\d+:\d+)\t[@%+~&]?([^ <-]\S+)\t(.*)");
static ACTION_LINE: Regex = regex!(r"^(\d+-\d+-\d+ \d+:\d+:\d+)\t \*\t(\S+) (.*)");
static OTHER_LINES: Regex = regex!(r"^(\d+-\d+-\d+ \d+:\d+:\d+)\s(?:--|<--|-->)\s(\S+)\s(\S+)\s(\S+)\s(\S+)\s(\S+)(.*)\n$");
//static OTHER_LINES: Regex = regex!(r"(.+)");
static TIME_DATE_FORMAT: &'static str = "%Y-%m-%d %H:%M:%S";
pub struct Iter<R> where R: BufRead {
input: R,
buffer: String
}
impl<R> Iterator for Iter<R> where R: BufRead {
type Item = ::Result<Event>;
fn next(&mut self) -> Option<::Result<Event>> {
fn time(s: &str) -> i64 {
UTC.datetime_from_str(s, TIME_DATE_FORMAT).unwrap().timestamp()
}
fn mask(s: &str) -> String {
s.trim_left_matches('(').trim_right_matches(')').to_owned()
}
loop {
self.buffer.clear();
match self.input.read_line(&mut self.buffer) {
Ok(0) | Err(_) => return None,
Ok(_) => ()
}
let line = &self.buffer;
if let Some(cap) = NORMAL_LINE.captures(line) {
return Some(Ok(Event::Msg {
from: cap.at(1).unwrap().to_owned(),
content: cap.at(2).unwrap().to_owned(),
time: time(cap.at(1).unwrap())
}))
} else if let Some(cap) = ACTION_LINE.captures(line) {
return Some(Ok(Event::Action {
from: cap.at(1).unwrap().to_owned(),
content: cap.at(2).unwrap().to_owned(),
time: time(cap.at(1).unwrap())
}))
} else if let Some(cap) = OTHER_LINES.captures(line) {
println!("{:?}", cap.iter().collect::<Vec<_>>());
if cap.at(4) == Some("has") && cap.at(5) == Some("kicked") {
println!(" Matched Event::Kick");
return Some(Ok(Event::Kick {
kicked_nick: cap.at(6).unwrap().to_owned(),
kicking_nick: cap.at(3).unwrap().to_owned(),
kick_message: cap.at(4).unwrap().to_owned(),
time: time(cap.at(1).unwrap())
}))
} else if cap.at(2) == Some("Topic") && cap.at(3) == Some("for") {
return Some(Ok(Event::Topic {
topic: { let mut s = cap.at(6).unwrap().to_string(); s.push_str(cap.at(7).unwrap()); s },
time: time(cap.at(1).unwrap())
}))
} else if cap.at(3) == Some("has") && cap.at(5) == Some("changed") && cap.at(6) == Some("topic") {
return Some(Ok(Event::TopicChange {
new_topic: cap.at(5).unwrap().to_owned(),
time: time(cap.at(1).unwrap())
}))
} else if cap.at(3) == Some("Mode") {
return Some(Ok(Event::Mode {
time: time(cap.at(1).unwrap())
}))
} else if cap.at(4) == Some("has") && cap.at(5) == Some("joined") {
return Some(Ok(Event::Join {
nick: cap.at(2).unwrap().to_owned(),
channel: cap.at(6).unwrap().to_owned(),
mask: mask(cap.at(3).unwrap()),
time: time(cap.at(1).unwrap())
}))
} else if cap.at(4) == Some("has") && cap.at(5) == Some("left") {
return Some(Ok(Event::Part {
nick: cap.at(2).unwrap().to_owned(),
channel: cap.at(6).unwrap().to_owned(),
reason: cap.at(7).unwrap().to_owned(),
mask: mask(cap.at(3).unwrap()),
time: time(cap.at(1).unwrap())
}))
} else if cap.at(5) == Some("now") && cap.at(6) == Some("known") {
return Some(Ok(Event::Nick {
old: String::new(),
new: String::new(),
time: time(cap.at(1).unwrap())
}))
}
}
}
}
}
impl<R> Decode<R, Iter<R>> for Weechat3 where R: BufRead {
fn decode(&mut self, input: R) -> Iter<R> {
Iter {
input: input,
buffer: String::new()
}
}
}
impl<W> Encode<W> for Weechat3 where W: Write {
fn encode(&self, mut output: W, event: &Event) -> io::Result<()> {
fn date(t: i64) -> String {
format!("{}", UTC.timestamp(t, 0).format(TIME_DATE_FORMAT))
}
match event {
&Event::Msg { ref from, ref content, ref time } => {
try!(write!(&mut output, "{}\t{}\t{}\n", date(*time), from, content))
},
&Event::Action { ref from, ref content, ref time } => {
try!(write!(&mut output, "{}\t*\t{} {}\n", date(*time), from, content))
},
&Event::Join { ref nick, ref mask, ref channel, ref time } => {
try!(write!(&mut output, "{}\t-->\t{} ({}) has joined {}\n",
date(*time), nick, mask, channel))
},
&Event::Part { ref nick, ref mask, ref channel, ref time, ref reason } => {
try!(write!(&mut output, "{}\t<--\t{} ({}) has left {}",
date(*time), nick, mask, channel));
if reason.len() > 0 {
try!(write!(&mut output, " ({})", reason));
}
try!(write!(&mut output, "\n"))
},
&Event::Quit { ref nick, ref mask, ref time, ref reason } => {
try!(write!(&mut output, "{}\t<--\t{} ({}) has quit", date(*time), nick, mask));
if reason.len() > 0 {
try!(write!(&mut output, " ({})", reason));
}
try!(write!(&mut output, "\n"))
},
_ => ()
}
Ok(())
}
}
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