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use std::fs::File;
use std::io::{self, Read, Write};
use std::process;
use structopt::StructOpt;
#[macro_use]
extern crate lazy_static;
mod choice;
mod config;
mod errors;
mod escape;
mod opt;
mod parse;
mod parse_error;
mod reader;
mod writeable;
mod writer;
use config::Config;
use opt::Opt;
use writer::WriteReceiver;
fn main() {
let opt = Opt::from_args();
let config = Config::new(opt);
let read = match &config.opt.input {
Some(f) => match File::open(f) {
Ok(fh) => Box::new(fh) as Box<dyn Read>,
Err(e) => {
eprintln!("Failed to open file: {}", e);
// exit code of 3 means failure to open input file
process::exit(3);
}
},
None => Box::new(io::stdin()) as Box<dyn Read>,
};
let mut reader = reader::BufReader::new(read);
let mut buffer = String::new();
let stdout = io::stdout();
let lock = stdout.lock();
let mut handle = io::BufWriter::new(lock);
while let Some(line) = reader.read_line(&mut buffer) {
match line {
Ok(l) => {
let choice_iter = &mut config.opt.choices.iter().peekable();
while let Some(choice) = choice_iter.next() {
choice.print_choice(&l, &config, &mut handle);
if choice_iter.peek().is_some() {
handle.write_separator(&config);
}
}
match handle.write(b"\n") {
Ok(_) => (),
Err(e) => eprintln!("Failed to write to output: {}", e),
}
}
Err(e) => println!("Failed to read line: {}", e),
}
}
}
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