RosettaCodeData/Task/Create-a-file/Rust/create-a-file.rs

27 lines
678 B
Rust

use std::io::{self, Write};
use std::fs::{DirBuilder, File};
use std::path::Path;
use std::{process,fmt};
const FILE_NAME: &'static str = "output.txt";
const DIR_NAME : &'static str = "docs";
fn main() {
create(".").and(create("/"))
.unwrap_or_else(|e| error_handler(e,1));
}
fn create<P>(root: P) -> io::Result<File>
where P: AsRef<Path>
{
let f_path = root.as_ref().join(FILE_NAME);
let d_path = root.as_ref().join(DIR_NAME);
DirBuilder::new().create(d_path).and(File::create(f_path))
}
fn error_handler<E: fmt::Display>(error: E, code: i32) -> ! {
let _ = writeln!(&mut io::stderr(), "Error: {}", error);
process::exit(code)
}