Remove "seen" command

Its functionality can be imitated via a combination of
--if nick --exactly ... and tail, with more flexibility,
though a little less performant.

Author: tilpner

cli/src/lib.rs

@@ -155,14 +155,6 @@ pub fn main(cli: Cli) {
                    .subcommand(SubCommand::with_name("stats")
                                    .about("Analyse the activity of users by certain metrics")
                                    .setting(AppSettings::AllowLeadingHyphen))
-                   .subcommand(SubCommand::with_name("seen")
-                                   .about("Print the last line a nick was active")
-                                   .setting(AppSettings::AllowLeadingHyphen)
-                                   .arg(Arg::with_name("nick")
-                                            .help("The nick you're looking for")
-                                            .takes_value(true)
-                                            .required(true)
-                                            .index(1)))
                    .subcommand(SubCommand::with_name("sort")
                                    .about("Sorts a log by time")
                                    .setting(AppSettings::AllowLeadingHyphen))
@@ -246,16 +238,6 @@ pub fn main(cli: Cli) {
 
             stats::output_as_json(&args, &cli, stats)
         }
-        ("seen", Some(args)) => {
-            let e = Environment(&args);
-            let nick = args.value_of("nick").expect("Required argument <nick> not present");
-            ilc_ops::seen::seen(nick,
-                                &e.context(),
-                                &mut e.input(),
-                                &mut *e.decoder(),
-                                &mut *e.output(),
-                                &Weechat)
-        }
         ("sort", Some(args)) => {
             let e = Environment(&args);
             ilc_ops::sort::sort(&e.context(),

ops/src/lib.rs

@@ -29,37 +29,6 @@ pub mod parse {
     }
 }
 
-/// Last-seen of nicks
-pub mod seen {
-    use ilc_base::{self, Context, Decode, Encode, Event};
-    use std::io::{BufRead, Write};
-
-    /// Return the last message of a given nickname, searching from the beginning of the logs.
-    /// Will return `Err` if the decoder yields `Err`. This relies on absolute timestamps, and
-    /// behaviour without full dates is undefined.
-    pub fn seen(nick: &str,
-                ctx: &Context,
-                input: &mut BufRead,
-                decoder: &mut Decode,
-                output: &mut Write,
-                encoder: &Encode)
-                -> ilc_base::Result<()> {
-        let mut last: Option<Event> = None;
-        for e in decoder.decode(&ctx, input) {
-            let m: Event = try!(e);
-            if m.ty.involves(nick) &&
-               last.as_ref().map_or(true,
-                                    |last| m.time.as_timestamp() > last.time.as_timestamp()) {
-                last = Some(m)
-            }
-        }
-        if let Some(ref m) = last {
-            try!(encoder.encode(&ctx, output, m));
-        }
-        Ok(())
-    }
-}
-
 /// Internal (as opposed to external, not to be confused with private) log sorting
 pub mod sort {
     use ilc_base::{self, Context, Decode, Encode, Event};

src/lib.rs

@@ -12,7 +12,6 @@ pub use ilc_ops::convert::{self, convert};
 pub use ilc_ops::dedup::{self, dedup};
 pub use ilc_ops::stats::{self, stats};
 pub use ilc_ops::parse::{self, parse};
-pub use ilc_ops::seen::{self, seen};
 pub use ilc_ops::sort::{self, sort};
 pub use ilc_ops::merge::{self, merge};