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use regex::Regex;
use std::fs::File;
use std::io::{self, BufRead, BufReader, Read, Write};
use std::process;
use structopt::StructOpt;
mod choice;
fn main() {
let opt = choice::Opt::from_args();
let read = match &opt.input {
Some(f) => Box::new(File::open(f).expect("Could not open file")) as Box<dyn Read>,
None => Box::new(io::stdin()) as Box<dyn Read>,
};
let buf = BufReader::new(read);
let stdout = io::stdout();
let lock = stdout.lock();
let mut handle = io::BufWriter::new(lock);
let re = Regex::new(match &opt.field_separator {
Some(s) => s,
None => "[[:space:]]",
})
.unwrap_or_else(|e| {
eprintln!("Failed to compile regular expression: {}", e);
// Exit code of 1 means failed to compile field_separator regex
process::exit(1);
});
let lines = buf.lines();
for line in lines {
match line {
Ok(l) => {
for choice in &opt.choice {
choice.print_choice(&l, &opt, &re, &mut handle);
}
writeln!(handle, "");
}
Err(e) => println!("ERROR: {}", e),
}
}
}
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