read numbers from stdin #15

Merged
PlexSheep merged 2 commits from feat/numbers-from-stdin into devel 2024-05-13 16:32:37 +02:00
1 changed files with 29 additions and 1 deletions

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@ -3,13 +3,41 @@
//! This binary should just take any amount of numbers and print them out formatted to some other
//! system.
use std::io::Read;
use std::process::exit;
use clap::Parser;
mod format;
use format::*;
fn main() {
let options = FormatOptions::parse();
// try to read from stdin first, appending the numbers we read to the FormatOptions
let mut args: Vec<String> = std::env::args_os()
.map(|x| x.into_string().unwrap())
.collect();
let mut stdin_nums = Vec::new();
match std::io::stdin().lock().read_to_end(&mut stdin_nums) {
Ok(_) => {
let whole: String = match String::from_utf8(stdin_nums) {
Ok(r) => r,
Err(e) => {
eprintln!("stdin for this program only accepts text: {e:#?}");
exit(1);
}
};
let split = whole.split_whitespace();
for s in split {
args.push(s.to_string());
}
}
Err(e) => {
eprintln!("could not read from stdin: {e:#?}");
exit(2);
}
};
let options = FormatOptions::parse_from(args);
let mut out: Vec<String> = Vec::new();