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#[macro_use]
extern crate uucore;
use std::error::Error;
use std::io::{self, stdin, stdout, BufRead, Write};
mod factor;
pub(crate) use factor::*;
mod miller_rabin;
pub mod numeric;
mod rho;
mod table;
static SYNTAX: &str = "[OPTION] [NUMBER]...";
static SUMMARY: &str = "Print the prime factors of the given number(s).
If none are specified, read from standard input.";
static LONG_HELP: &str = "";
fn print_factors_str(num_str: &str, w: &mut impl io::Write) -> Result<(), Box<dyn Error>> {
num_str
.parse::<u64>()
.map_err(|e| e.into())
.and_then(|x| writeln!(w, "{}:{}", x, factor(x)).map_err(|e| e.into()))
}
pub fn uumain(args: impl uucore::Args) -> i32 {
let matches = app!(SYNTAX, SUMMARY, LONG_HELP).parse(args.collect_str());
let stdout = stdout();
let mut w = io::BufWriter::new(stdout.lock());
if matches.free.is_empty() {
let stdin = stdin();
for line in stdin.lock().lines() {
for number in line.unwrap().split_whitespace() {
if let Err(e) = print_factors_str(number, &mut w) {
show_warning!("{}: {}", number, e);
}
}
}
} else {
for number in &matches.free {
if let Err(e) = print_factors_str(number, &mut w) {
show_warning!("{}: {}", number, e);
}
}
}
if let Err(e) = w.flush() {
show_error!("{}", e);
}
0
}