gistfile1.txt

use std::error::Error;
use std::process;
use std::fs::File;
use std::io;
use std::io::Write;
use std::io::BufWriter;

extern crate csv;

fn run() -> Result<(), Box<Error>> {
    let mut open_files: Vec<BufWriter<File>> = Vec::new();
    let mut max_file = 0;
    let mut rdr = csv::ReaderBuilder::new().has_headers(false).from_reader(io::stdin());
    for result in rdr.records() {
        let record = result?;
        for i in max_file..record.len() {
            open_files.push(BufWriter::new(File::create(i.to_string())?));
        }
        max_file = record.len();
        for (i, item) in record.iter().enumerate() {
            open_files[i].write_fmt(format_args!("{}\n", &record[i]))?;
        }
    }
    Ok(())
}

fn main() {
    if let Err(err) = run() {
        println!("{}", err);
        process::exit(1);
    }
}