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#[macro_use]
extern crate uucore;
use std::error::Error;
use std::io::{self, stdin, stdout, BufRead, Write};
mod factor;
use clap::{crate_version, App, Arg};
pub use factor::*;
mod miller_rabin;
pub mod numeric;
mod rho;
pub mod table;
static SUMMARY: &str = "Print the prime factors of the given NUMBER(s).
If none are specified, read from standard input.";
mod options {
pub static NUMBER: &str = "NUMBER";
}
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 = uu_app().get_matches_from(args);
let stdout = stdout();
let mut w = io::BufWriter::new(stdout.lock());
if let Some(values) = matches.values_of(options::NUMBER) {
for number in values {
if let Err(e) = print_factors_str(number, &mut w) {
show_warning!("{}: {}", number, e);
}
}
} else {
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);
}
}
}
}
if let Err(e) = w.flush() {
show_error!("{}", e);
}
0
}
pub fn uu_app() -> App<'static, 'static> {
App::new(executable!())
.version(crate_version!())
.about(SUMMARY)
.arg(Arg::with_name(options::NUMBER).multiple(true))
}