Michael Angerman d06f457b2a
nu-cli refactor moving commands into their own crate nu-command (#2910)
* move commands, futures.rs, script.rs, utils

* move over maybe_print_errors

* add nu_command crate references to nu_cli

* in commands.rs open up to pub mod from pub(crate)

* nu-cli, nu-command, and nu tests are now passing

* cargo fmt

* clean up nu-cli/src/prelude.rs

* code cleanup

* for some reason lex.rs was not formatted, may be causing my error

* remove mod completion from lib.rs which was not being used along with quickcheck macros

* add in allow unused imports

* comment out one failing external test; comment out one failing internal test

* revert commenting out failing tests; something else might be going on; someone with a windows machine should check and see what is going on with these failing windows tests

* Update Cargo.toml

Extend the optional features to nu-command

Co-authored-by: Jonathan Turner <jonathandturner@users.noreply.github.com>
2021-01-12 17:59:53 +13:00

46 lines
1.1 KiB
Rust

use crate::prelude::*;
use nu_engine::WholeStreamCommand;
use nu_errors::ShellError;
use nu_protocol::Signature;
use std::process::Command;
pub struct Clear;
#[async_trait]
impl WholeStreamCommand for Clear {
fn name(&self) -> &str {
"clear"
}
fn signature(&self) -> Signature {
Signature::build("clear")
}
fn usage(&self) -> &str {
"Clears the terminal"
}
async fn run(&self, _: CommandArgs) -> Result<OutputStream, ShellError> {
if cfg!(windows) {
Command::new("cmd")
.args(&["/C", "cls"])
.status()
.expect("failed to execute process");
} else if cfg!(unix) {
Command::new("/bin/sh")
.args(&["-c", "clear"])
.status()
.expect("failed to execute process");
}
Ok(OutputStream::empty())
}
fn examples(&self) -> Vec<Example> {
vec![Example {
description: "Clear the screen",
example: "clear",
result: None,
}]
}
}