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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.
#[macro_use]
extern crate log;
extern crate ilc_base;
use std::io::{BufRead, Write};
use std::borrow::ToOwned;
use std::iter::Iterator;
use ilc_base::event::{Event, Time, Type};
use ilc_base::{Context, Decode, Encode};
use ilc_base::format::{rejoin, strip_one};
use log::LogLevel::Info;
#[derive(Copy, Clone)]
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 = ilc_base::Result<Event<'a>>;
fn next(&mut self) -> Option<ilc_base::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);
}
// slice pattern matching is not stable as of Feb. 2016 and was replaced with
// nested if-else chains in this module.
// Don't match on the --> arrows, those are apparently often configured, and
// that would break parsing for many users.
let len = tokens.len();
// 2016-02-25 01:15:05 --> Foo (host@mask.foo) has joined #example
if len >= 8 && tokens[5] == "has" && tokens[6] == "joined" {
return Some(Ok(Event {
ty: Type::Join {
nick: tokens[3].to_owned().into(),
mask: Some(strip_one(tokens[4]).into()),
},
channel: Some(tokens[7].to_owned().into()),
time: parse_time(&self.context, tokens[0], tokens[1]),
}));
}
// 2016-02-25 01:36:13 <-- Foo (host@mask.foo) has left #channel (Some reason)
else if len >= 9 && tokens[5] == "has" && tokens[6] == "left" {
return Some(Ok(Event {
ty: Type::Part {
nick: tokens[3].to_owned().into(),
mask: Some(strip_one(&tokens[4]).into()),
reason: Some(strip_one(&rejoin(&tokens[8..], &split_tokens[8..])).into()),
},
channel: Some(tokens[7].to_owned().into()),
time: parse_time(&self.context, tokens[0], tokens[1]),
}));
}
// 2016-02-25 01:38:55 <-- Foo (host@mask.foo) has quit (Some reason)
else if len >= 8 && tokens[5] == "has" && tokens[6] == "quit" {
return Some(Ok(Event {
ty: Type::Quit {
nick: tokens[3].to_owned().into(),
mask: Some(strip_one(tokens[4]).into()),
reason: Some(strip_one(&rejoin(&tokens[7..], &split_tokens[7..])).into()),
},
time: parse_time(&self.context, tokens[0], tokens[1]),
channel: self.context.channel.clone().map(Into::into),
}));
} else if len >= 3 && tokens[2] == "--" {
// 2016-02-25 04:32:15 -- Notice(playbot-veno): ""
if len >= 5 && tokens[3].starts_with("Notice(") {
return Some(Ok(Event {
ty: Type::Notice {
from: tokens[3]["Notice(".len()..tokens[3].len() - 2].to_owned().into(),
content: rejoin(&tokens[4..], &split_tokens[4..]),
},
time: parse_time(&self.context, tokens[0], tokens[1]),
channel: self.context.channel.clone().map(Into::into),
}));
}
// 2014-07-11 15:00:03 -- irc: disconnected from server
else if len >= 7 && tokens[3] == "irc:" && tokens[4] == "disconnected" &&
tokens[5] == "from" && tokens[6] == "server" {
return Some(Ok(Event {
ty: Type::Disconnect,
time: parse_time(&self.context, tokens[0], tokens[1]),
channel: self.context.channel.clone().map(Into::into),
}));
}
// 2014-07-11 15:00:03 -- Foo|afk is now known as Foo
// 2015-05-09 13:56:05 -- You are now known as foo
else if len >= 9 && tokens[5] == "now" && tokens[6] == "known" && tokens[7] == "as" &&
(tokens[4] == "is" || tokens[4] == "are") {
return Some(Ok(Event {
ty: Type::Nick {
old_nick: tokens[3].to_owned().into(),
new_nick: tokens[8].to_owned().into(),
},
time: parse_time(&self.context, tokens[0], tokens[1]),
channel: self.context.channel.clone().map(Into::into),
}));
}
}
// 2016-01-24 20:32:57 * nick emotes
else if tokens[3] == "*" && tokens[2].is_empty() {
return Some(Ok(Event {
ty: Type::Action {
from: tokens[4].to_owned().into(),
content: rejoin(&tokens[5..], &split_tokens[5..]),
},
time: parse_time(&self.context, tokens[0], tokens[1]),
channel: self.context.channel.clone().map(Into::into),
}));
}
// 2016-01-24 20:32:25 nick just some message
else {
return Some(Ok(Event {
ty: Type::Msg {
from: tokens[2].to_owned().into(),
content: rejoin(&tokens[3..], &split_tokens[3..]),
},
time: parse_time(&self.context, tokens[0], tokens[1]),
channel: self.context.channel.clone().map(Into::into),
}));
}
}
}
}
impl Decode for Weechat {
fn decode<'a>(&'a self,
context: &'a Context,
input: &'a mut BufRead)
-> Box<Iterator<Item = ilc_base::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)
-> ilc_base::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))
}
_ => {
if option_env!("FUSE").is_some() {
panic!("Shouldn't reach here, this is a bug!")
}
()
}
}
Ok(())
}
}
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