aboutsummaryrefslogtreecommitdiff
path: root/src/format/weechat3.rs
blob: e7d8360bdcbcef07cb18be076120cc4ce9bf791a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
use std::io::{ self, BufRead, Write };
use std::borrow::ToOwned;
use std::iter::{ Iterator, AdditiveIterator };

use log::Event;
use format::{ Encode, Decode };

use l::LogLevel::Info;

use chrono::*;

pub struct Weechat3;

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 timestamp(date: &str, time: &str) -> i64 {
            UTC.datetime_from_str(&format!("{} {}", date, time), TIME_DATE_FORMAT).unwrap().timestamp()
        }
        fn join(s: &[&str], splits: &[char]) -> String {
            let len = s.iter().map(|s| s.len()).sum();
            let mut out = s.iter().zip(splits.iter()).fold(String::with_capacity(len),
               |mut s, (b, &split)| { s.push_str(b); s.push(split); s });
            out.pop(); out
        }
        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 mut split_tokens: Vec<char> = Vec::new();
            let tokens = self.buffer.split( |c: char| {
                if c.is_whitespace() { split_tokens.push(c); true } else { false }
            }).collect::<Vec<_>>();
            if log_enabled!(Info) {
                info!("Original:  `{}`", self.buffer);
                info!("Parsing:   {:?}", tokens);
            }
            match tokens[..tokens.len() - 1].as_ref() {
                [date, time, "-->", nick, host, "has", "joined", channel, _..] => return Some(Ok(Event::Join {
                    nick: nick.to_owned(), channel: channel.to_owned(), mask: mask(host),
                    time: timestamp(date, time)
                })),
                [date, time, "<--", nick, host, "has", "left", channel, reason..] => return Some(Ok(Event::Part {
                    nick: nick.to_owned(), channel: channel.to_owned(), mask: mask(host),
                    reason: mask(&join(reason, &split_tokens[8..])), time: timestamp(date, time)
                })),
                [date, time, "--", notice, content..]
                    if notice.starts_with("Notice(")
                    => return Some(Ok(Event::Notice {
                    nick: notice["Notice(".len()..notice.len() - 2].to_owned(),
                    content: join(content, &split_tokens[4..]),
                    time: timestamp(date, time)
                })),
                [date, time, "--", "irc:", "disconnected", "from", "server", _..] => return Some(Ok(Event::Disconnect {
                    time: timestamp(date, time)
                })),
                [date, time, sp, "*", nick, msg..]
                    if sp.is_empty()
                    => return Some(Ok(Event::Action {
                    from: nick.to_owned(), content: join(msg, &split_tokens[5..]),
                    time: timestamp(date, time)
                })),
                [date, time, nick, msg..] => return Some(Ok(Event::Msg {
                    from: nick.to_owned(),
                    content: join(msg, &split_tokens[3..]),
                    time: timestamp(date, time)
                })),
                _ => ()
            }
        }
    }
}

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!(writeln!(&mut output, "{}\t{}\t{}", date(*time), from, content))
            },
            &Event::Action { ref from, ref content, ref time } => {
                try!(writeln!(&mut output, "{}\t *\t{} {}", date(*time), from, content))
            },
            &Event::Join { ref nick, ref mask, ref channel, ref time } => {
                try!(writeln!(&mut output, "{}\t-->\t{} ({}) has joined {}",
                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"))
            },
            &Event::Disconnect { ref time } => {
                try!(writeln!(&mut output, "{}\t--\tirc: disconnected from server", date(*time)))
            },
            &Event::Notice { ref nick, ref content, ref time } => {
                try!(writeln!(&mut output, "{}\t--\tNotice({}): {}", date(*time), nick, content))
            },
            _ => ()
        }
        Ok(())
    }
}