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use clap::ArgMatches;
use chrono::offset::fixed::FixedOffset;
use chrono::naive::date::NaiveDate;
use glob::glob;
use std::process;
use std::str::FromStr;
use std::path::{ Path, PathBuf };
use std::io::{ self, Write, BufWriter, BufRead, BufReader };
use std::fs::File;
use std::error::Error;
use std::ffi::OsStr;
use ilc::context::Context;
use ilc::format::{ self, Encode, Decode };
use ::chain;
pub mod freq;
pub fn error(e: Box<Error>) -> ! {
let _ = writeln!(&mut io::stderr(), "Error: {}", e);
let mut e = e.cause();
while let Some(err) = e {
let _ = writeln!(&mut io::stderr(), "\t{}", err);
e = err.cause();
}
process::exit(1)
}
pub fn die(s: &str) -> ! {
let _ = writeln!(&mut io::stderr(), "Aborting: {}", s);
process::exit(1)
}
pub fn force_decoder(s: Option<&str>) -> Box<Decode> {
let inf = match s {
Some(s) => s,
None => die("You didn't specify the input format")
};
match format::decoder(&inf) {
Some(d) => d,
None => die(&format!("The format `{}` is unknown to me", inf))
}
}
pub fn force_encoder<'a>(s: Option<&str>) -> Box<Encode> {
let outf = match s {
Some(s) => s,
None => die("You didn't specify the output format")
};
match format::encoder(&outf) {
Some(e) => e,
None => die(&format!("The format `{}` is unknown to me", outf))
}
}
pub fn build_context(args: &ArgMatches) -> Context {
let mut context = Context {
timezone: FixedOffset::west(args.value_of("timezone").and_then(|s| s.parse().ok()).unwrap_or(0)),
override_date: args.value_of("date").and_then(|d| NaiveDate::from_str(&d).ok()),
channel: args.value_of("channel").map(str::to_owned).clone()
};
if args.is_present("infer_date") {
let input_files = gather_input(args);
match input_files.len() {
0 => die("No input files given, can't infer date"),
1 => if let Some(date) = input_files.get(0)
.map(PathBuf::as_path)
.and_then(Path::file_stem)
.and_then(OsStr::to_str)
.and_then(|s: &str| NaiveDate::from_str(s).ok()) {
context.override_date = Some(date);
},
_n => die("Too many input files, can't infer date")
}
}
context
}
pub fn gather_input(args: &ArgMatches) -> Vec<PathBuf> {
if let Some(iter) = args.values_of("input_files") {
iter.flat_map(|p| {
match glob(p) {
Ok(paths) => paths,
Err(e) => die(&format!("{}", e.msg))
}
}).filter_map(Result::ok).collect()
} else { Vec::new() }
}
pub fn open_files(files: Vec<PathBuf>) -> Box<BufRead> {
if files.len() > 0 {
Box::new(BufReader::new(chain::Chain::new(files.iter().map(|p| File::open(p).unwrap()).collect())))
} else {
Box::new(BufReader::new(io::stdin()))
}
}
pub fn open_output(args: &ArgMatches) -> Box<Write> {
if let Some(out) = args.value_of("output_file") {
match File::create(out) {
Ok(f) => Box::new(BufWriter::new(f)),
Err(e) => error(Box::new(e))
}
} else {
Box::new(BufWriter::new(io::stdout()))
}
}
pub struct Environment<'a>(pub &'a ArgMatches<'a>);
impl<'a> Environment<'a> {
pub fn context(&self) -> Context { build_context(self.0) }
pub fn input(&self) -> Box<BufRead> { open_files(gather_input(self.0)) }
pub fn output(&self) -> Box<Write> { open_output(self.0) }
pub fn decoder(&self) -> Box<Decode> { force_decoder(self.0.value_of("input_format")) }
pub fn encoder(&self) -> Box<Encode> { force_encoder(self.0.value_of("output_format")) }
}
pub mod parse {
use clap::ArgMatches;
use super::*;
pub fn parse(args: &ArgMatches) {
let env = Environment(args);
let (context, mut decoder, mut input) = (env.context(), env.decoder(), env.input());
for e in decoder.decode(&context, &mut input) {
match e {
Err(e) => { println!("Foo!"); error(Box::new(e)) },
_ => ()
}
}
}
}
pub mod convert {
use clap::ArgMatches;
use super::*;
pub fn convert(args: &ArgMatches) {
let env = Environment(args);
let (context, mut decoder, mut input, encoder, mut output) =
(env.context(), env.decoder(), env.input(), env.encoder(), env.output());
for e in decoder.decode(&context, &mut input) {
match e {
Ok(e) => { let _ = encoder.encode(&context, &mut output, &e); },
Err(e) => error(Box::new(e))
}
}
}
}
pub mod seen {
use clap::ArgMatches;
use ilc::event::Event;
use ilc::format::{ self, Encode };
use super::*;
pub fn seen(args: &ArgMatches) {
let env = Environment(args);
let (context, mut decoder, mut input, mut output) = (env.context(), env.decoder(), env.input(), env.output());
let nick = args.value_of("nick").expect("Required argument <nick> not present");
let mut last: Option<Event> = None;
for e in decoder.decode(&context, &mut input) {
let m = match e {
Ok(m) => m,
Err(err) => error(Box::new(err))
};
if m.ty.involves(nick)
&& last.as_ref().map_or(true, |last| m.time.as_timestamp() > last.time.as_timestamp()) { last = Some(m) }
}
let encoder = format::weechat3::Weechat3;
if let Some(ref m) = last {
let _ = encoder.encode(&context, &mut output, m);
}
}
}
pub mod sort {
use clap::ArgMatches;
use ilc::event::Event;
use super::*;
pub fn sort(args: &ArgMatches) {
let env = Environment(args);
let (context, mut decoder, mut input, encoder, mut output) =
(env.context(), env.decoder(), env.input(), env.encoder(), env.output());
let mut events: Vec<Event> = decoder.decode(&context, &mut input)
.flat_map(Result::ok)
.collect();
events.sort_by(|a, b| a.time.cmp(&b.time));
for e in events {
let _ = encoder.encode(&context, &mut output, &e);
}
}
}
pub mod dedup {
use clap::ArgMatches;
use ilc::event::NoTimeHash;
use ::ageset::AgeSet;
use super::*;
pub fn dedup(args: &ArgMatches) {
let env = Environment(args);
let (context, mut decoder, mut input, encoder, mut output) =
(env.context(), env.decoder(), env.input(), env.encoder(), env.output());
let mut backlog = AgeSet::new();
for e in decoder.decode(&context, &mut input) {
if let Ok(e) = e {
let newest_event = e.clone();
backlog.prune(move |a: &NoTimeHash| {
let age = newest_event.time.as_timestamp() - a.0.time.as_timestamp();
age > 5000
});
// write `e` if it's a new event
let n = NoTimeHash(e);
if !backlog.contains(&n) {
let _ = encoder.encode(&context, &mut output, &n.0);
backlog.push(n);
}
}
}
}
}
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