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//! Common structures to represent the actual log data in memory.
//! These will be used by all formats for encoding and decoding.
use std::borrow::Cow;
use std::cmp::Ordering;
use chrono::naive::time::NaiveTime;
use chrono::offset::fixed::FixedOffset;
use chrono::offset::local::Local;
use chrono::offset::TimeZone;
/// A whole log, in memory. This structure does not specify its
/// use. It may represent a private query, or the log of a channel.
pub struct Log<'a> {
pub entries: Vec<Event<'a>>,
}
/// Different log formats carry different amounts of information. Some might
/// hold enough information to calculate precise timestamps, others might
/// only suffice for the time of day.
#[derive(Clone, Debug, PartialEq, Eq, Ord, Hash, RustcEncodable, RustcDecodable)]
pub enum Time {
Unknown,
Hms(u8, u8, u8),
Timestamp(i64),
}
impl Time {
pub fn from_format(tz: &FixedOffset, s: &str, f: &str) -> Time {
tz.datetime_from_str(s, f)
.map(|d| d.timestamp())
.map(Time::Timestamp)
.unwrap_or(Time::Unknown)
}
pub fn with_format(&self, tz: &FixedOffset, f: &str) -> String {
match self {
&Time::Unknown => panic!("Time data for this event is not present"),
&Time::Hms(h, m, s) => {
format!("{}",
NaiveTime::from_hms(h as u32, m as u32, s as u32).format(f))
}
&Time::Timestamp(t) => format!("{}", tz.timestamp(t, 0).format(f)),
}
}
pub fn as_timestamp(&self) -> i64 {
use self::Time::*;
match self {
&Unknown => 0,
&Hms(h, m, s) => {
Local::today()
.and_hms(h as u32, m as u32, s as u32)
.timestamp()
}
&Timestamp(i) => i,
}
}
pub fn to_timestamp(&self) -> Time {
Time::Timestamp(self.as_timestamp())
}
}
impl PartialOrd for Time {
fn partial_cmp(&self, other: &Time) -> Option<Ordering> {
use self::Time::*;
match (self, other) {
(&Unknown, _) | (_, &Unknown) => None,
(&Hms(a_h, a_m, a_s), &Hms(b_h, b_m, b_s)) => {
if (a_h >= b_h && a_m >= b_m && a_s > b_s) ||
(a_h >= b_h && a_m > b_m && a_s >= b_s) ||
(a_h > b_h && a_m >= b_m && a_s >= b_s) {
Some(Ordering::Greater)
} else {
Some(Ordering::Less)
}
}
(&Timestamp(a), &Timestamp(b)) => Some(a.cmp(&b)),
_ => unimplemented!(),
}
}
}
#[derive(Clone, Debug, PartialEq, Eq, Hash, RustcEncodable, RustcDecodable)]
pub struct Event<'a> {
pub ty: Type<'a>,
pub time: Time,
pub channel: Option<Cow<'a, str>>,
}
#[derive(Clone, Debug, PartialEq, Eq, Hash, RustcEncodable, RustcDecodable)]
pub struct User<'a> {
nicks: Cow<'a, str>,
}
/// All representable events, such as messages, quits, joins
/// and topic changes.
#[derive(Clone, Debug, Hash, PartialEq, Eq, RustcEncodable, RustcDecodable)]
pub enum Type<'a> {
Connect,
Disconnect,
Msg {
from: Cow<'a, str>,
content: Cow<'a, str>,
},
Action {
from: Cow<'a, str>,
content: Cow<'a, str>,
},
Join {
nick: Cow<'a, str>,
mask: Option<Cow<'a, str>>,
},
Part {
nick: Cow<'a, str>,
mask: Option<Cow<'a, str>>,
reason: Option<Cow<'a, str>>,
},
Quit {
nick: Cow<'a, str>,
mask: Option<Cow<'a, str>>,
reason: Option<Cow<'a, str>>,
},
Nick {
old_nick: Cow<'a, str>,
new_nick: Cow<'a, str>,
},
Notice {
from: Cow<'a, str>,
content: Cow<'a, str>,
},
Kick {
kicked_nick: Cow<'a, str>,
kicking_nick: Option<Cow<'a, str>>,
kick_message: Option<Cow<'a, str>>,
},
Topic {
topic: Cow<'a, str>,
},
TopicChange {
nick: Option<Cow<'a, str>>,
new_topic: Cow<'a, str>,
},
Mode {
nick: Option<Cow<'a, str>>,
mode: Cow<'a, str>,
masks: Cow<'a, str>,
},
}
impl<'a> Type<'a> {
pub fn actor(&self) -> Option<&str> {
use self::Type::*;
match self {
&Msg { ref from, .. } => Some(from),
&Action { ref from, .. } => Some(from),
&Join { ref nick, .. } => Some(nick),
&Part { ref nick, .. } => Some(nick),
&Quit { ref nick, .. } => Some(nick),
&Nick { ref old_nick, .. } => Some(old_nick),
&Notice { ref from, .. } => Some(from),
&Kick { ref kicking_nick, .. } => kicking_nick.as_ref().map(|s| &*s as &str),
&TopicChange { ref nick, .. } => nick.as_ref().map(|s| &*s as &str),
&Mode { ref nick, .. } => nick.as_ref().map(|s| &*s as &str),
_ => None,
}
}
pub fn involves(&self, needle: &str) -> bool {
use self::Type::*;
match self {
&Msg { ref from, ref content, .. } => from == needle || content.contains(needle),
&Action { ref from, ref content, .. } => from == needle || content.contains(needle),
&Join { ref nick, .. } => nick == needle,
&Part { ref nick, ref reason, .. } => {
nick == needle || reason.as_ref().map_or(false, |r| r.contains(needle))
}
&Quit { ref nick, ref reason, .. } => {
nick == needle || reason.as_ref().map_or(false, |r| r.contains(needle))
}
&Nick { ref old_nick, ref new_nick, .. } => old_nick == needle || new_nick == needle,
&Notice { ref from, ref content, .. } => from == needle || content.contains(needle),
&Kick { ref kicked_nick, ref kicking_nick, ref kick_message, .. } => {
*kicked_nick == Cow::Borrowed(needle) ||
kicking_nick.as_ref().map_or(false, |k| k.as_ref() == Cow::Borrowed(needle)) ||
kick_message.as_ref().map_or(false, |k| k.as_ref() == Cow::Borrowed(needle))
}
&TopicChange { ref nick, ref new_topic, .. } => {
nick.as_ref().map_or(false, |k| k.as_ref() == needle) || new_topic.contains(needle)
}
&Mode { ref nick, .. } => {
nick.as_ref().map_or(false, |k| k.as_ref() == Cow::Borrowed(needle))
}
_ => false,
}
}
pub fn type_desc(&self) -> &'static str {
use self::Type::*;
match self {
&Msg { .. } => "message",
&Action { .. } => "action",
&Join { .. } => "join",
&Part { .. } => "part",
&Quit { .. } => "quit",
&Nick { .. } => "nick",
&Notice { .. } => "notice",
&Topic { .. } => "topic",
&TopicChange { .. } => "topic_change",
&Kick { .. } => "kick",
&Mode { .. } => "mode",
&Connect { .. } => "connect",
&Disconnect { .. } => "disconnect",
}
}
pub fn text(&self) -> Option<&str> {
use self::Type::*;
match self {
&Msg { ref content, .. } => Some(content),
&Action { ref content, .. } => Some(content),
&Part { ref reason, .. } => reason.as_ref().map(|s| s as &str),
&Quit { ref reason, .. } => reason.as_ref().map(|s| s as &str),
&Notice { ref content, .. } => Some(content),
&Kick { ref kick_message, .. } => kick_message.as_ref().map(|s| s as &str),
&Topic { ref topic, .. } => Some(topic),
&TopicChange { ref new_topic, .. } => Some(new_topic),
_ => None,
}
}
}
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