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// Copyright 2015 Till Höppner
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::io::{ BufRead, Write };
use std::borrow::{ ToOwned };
use std::iter::{ Iterator };
use event::{ Event, Type, Time };
use context::Context;
use format::{ Encode, Decode, rejoin, strip_one };
use l::LogLevel::Info;
pub struct Weechat;
static TIME_DATE_FORMAT: &'static str = "%Y-%m-%d %H:%M:%S";
pub struct Iter<'a> {
context: &'a Context,
input: &'a mut BufRead,
buffer: Vec<u8>
}
impl<'a> Iterator for Iter<'a> {
type Item = ::Result<Event<'a>>;
fn next(&mut self) -> Option<::Result<Event<'a>>> {
fn parse_time(c: &Context, date: &str, time: &str) -> Time {
Time::from_format(&c.timezone, &format!("{} {}", date, time), TIME_DATE_FORMAT)
}
loop {
self.buffer.clear();
match self.input.read_until(b'\n', &mut self.buffer) {
Ok(0) | Err(_) => return None,
Ok(_) => ()
}
let buffer = String::from_utf8_lossy(&self.buffer);
let mut split_tokens: Vec<char> = Vec::new();
let tokens = buffer.split(|c: char| {
if c.is_whitespace() { split_tokens.push(c); true } else { false }
}).collect::<Vec<_>>();
if log_enabled!(Info) {
info!("Original: `{}`", buffer);
info!("Parsing: {:?}", tokens);
}
match &tokens[..tokens.len() - 1] {
[date, time, "-->", nick, host, "has", "joined", channel, _..]
=> return Some(Ok(Event {
ty: Type::Join {
nick: nick.to_owned().into(),
mask: Some(strip_one(host).into()),
},
channel: Some(channel.to_owned().into()),
time: parse_time(&self.context, date, time)
})),
[date, time, "<--", nick, host, "has", "left", channel, reason..]
=> return Some(Ok(Event {
ty: Type::Part {
nick: nick.to_owned().into(),
mask: Some(strip_one(host).into()),
reason: Some(strip_one(&rejoin(reason, &split_tokens[8..])).into()),
},
channel: Some(channel.to_owned().into()),
time: parse_time(&self.context, date, time)
})),
[date, time, "<--", nick, host, "has", "quit", reason..]
=> return Some(Ok(Event {
ty: Type::Quit {
nick: nick.to_owned().into(),
mask: Some(strip_one(host).into()),
reason: Some(strip_one(&rejoin(reason, &split_tokens[7..])).into()),
},
time: parse_time(&self.context, date, time),
channel: self.context.channel.clone().map(Into::into)
})),
[date, time, "--", notice, content..]
if notice.starts_with("Notice(")
=> return Some(Ok(Event {
ty: Type::Notice {
from: notice["Notice(".len()..notice.len() - 2].to_owned().into(),
content: rejoin(content, &split_tokens[4..]),
},
time: parse_time(&self.context, date, time),
channel: self.context.channel.clone().map(Into::into)
})),
[date, time, "--", "irc:", "disconnected", "from", "server", _..]
=> return Some(Ok(Event {
ty: Type::Disconnect,
time: parse_time(&self.context, date, time),
channel: self.context.channel.clone().map(Into::into)
})),
[date, time, "--", nick, verb, "now", "known", "as", new_nick]
if verb == "is" || verb == "are"
=> return Some(Ok(Event {
ty: Type::Nick {
old_nick: nick.to_owned().into(),
new_nick: new_nick.to_owned().into()
},
time: parse_time(&self.context, date, time),
channel: self.context.channel.clone().map(Into::into)
})),
[date, time, sp, "*", nick, msg..]
if sp.clone().is_empty()
=> return Some(Ok(Event {
ty: Type::Action {
from: nick.to_owned().into(),
content: rejoin(msg, &split_tokens[5..]),
},
time: parse_time(&self.context, date, time),
channel: self.context.channel.clone().map(Into::into)
})),
[date, time, nick, msg..]
=> return Some(Ok(Event {
ty: Type::Msg {
from: nick.to_owned().into(),
content: rejoin(msg, &split_tokens[3..]),
},
time: parse_time(&self.context, date, time),
channel: self.context.channel.clone().map(Into::into)
})),
_ => ()
}
}
}
}
impl Decode for Weechat {
fn decode<'a>(&'a mut self, context: &'a Context, input: &'a mut BufRead) -> Box<Iterator<Item = ::Result<Event<'a>>> + 'a> {
Box::new(Iter {
context: context,
input: input,
buffer: Vec::new()
})
}
}
impl Encode for Weechat {
fn encode<'a>(&'a self, context: &'a Context, mut output: &'a mut Write, event: &'a Event) -> ::Result<()> {
match event {
&Event { ty: Type::Msg { ref from, ref content, .. }, ref time, .. } => {
try!(writeln!(&mut output, "{}\t{}\t{}",
time.with_format(&context.timezone, TIME_DATE_FORMAT), from, content))
},
&Event { ty: Type::Action { ref from, ref content, .. }, ref time, .. } => {
try!(writeln!(&mut output, "{}\t *\t{} {}",
time.with_format(&context.timezone, TIME_DATE_FORMAT), from, content))
},
&Event { ty: Type::Join { ref nick, ref mask, .. }, ref channel, ref time } => {
try!(writeln!(&mut output, "{}\t-->\t{} ({}) has joined {}",
time.with_format(&context.timezone, TIME_DATE_FORMAT), nick,
mask.as_ref().expect("Hostmask not present, but required."),
channel.as_ref().expect("Channel not present, but required.")))
},
&Event { ty: Type::Part { ref nick, ref mask, ref reason }, ref channel, ref time } => {
try!(write!(&mut output, "{}\t<--\t{} ({}) has left {}",
time.with_format(&context.timezone, TIME_DATE_FORMAT), nick,
mask.as_ref().expect("Hostmask not present, but required."),
channel.as_ref().expect("Channel not present, but required.")));
if reason.is_some() && reason.as_ref().unwrap().len() > 0 {
try!(write!(&mut output, " ({})", reason.as_ref().unwrap()));
}
try!(write!(&mut output, "\n"))
},
&Event { ty: Type::Quit { ref nick, ref mask, ref reason }, ref time, .. } => {
try!(write!(&mut output, "{}\t<--\t{} ({}) has quit",
time.with_format(&context.timezone, TIME_DATE_FORMAT), nick,
mask.as_ref().expect("Hostmask not present, but required.")));
if reason.is_some() && reason.as_ref().unwrap().len() > 0 {
try!(write!(&mut output, " ({})", reason.as_ref().unwrap()));
}
try!(write!(&mut output, "\n"))
},
&Event { ty: Type::Disconnect, ref time, .. } => {
try!(writeln!(&mut output, "{}\t--\tirc: disconnected from server",
time.with_format(&context.timezone, TIME_DATE_FORMAT)))
},
&Event { ty: Type::Notice { ref from, ref content }, ref time, .. } => {
try!(writeln!(&mut output, "{}\t--\tNotice({}): {}",
time.with_format(&context.timezone, TIME_DATE_FORMAT), from, content))
},
_ => ()
}
Ok(())
}
}
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