nushell/crates/nu-cli/src/commands/touch.rs
Joseph T. Lyons e24e0242d1
Removing async_stream! from some more commands (#1973)
* Removing async_stream! from some more commands

* Fix await error

* Fix Clippy warnings
2020-06-13 20:03:13 +12:00

73 lines
1.7 KiB
Rust

use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::{Signature, SyntaxShape};
use nu_source::Tagged;
use std::fs::OpenOptions;
use std::path::PathBuf;
pub struct Touch;
#[derive(Deserialize)]
pub struct TouchArgs {
pub target: Tagged<PathBuf>,
}
#[async_trait]
impl WholeStreamCommand for Touch {
fn name(&self) -> &str {
"touch"
}
fn signature(&self) -> Signature {
Signature::build("touch").required(
"filename",
SyntaxShape::Path,
"the path of the file you want to create",
)
}
fn usage(&self) -> &str {
"creates a file"
}
async fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
touch(args, registry).await
}
fn examples(&self) -> Vec<Example> {
vec![Example {
description: "Creates \"fixture.json\"",
example: "touch fixture.json",
result: None,
}]
}
}
async fn touch(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let (TouchArgs { target }, _) = args.process(&registry).await?;
match OpenOptions::new().write(true).create(true).open(&target) {
Ok(_) => Ok(OutputStream::empty()),
Err(err) => Err(ShellError::labeled_error(
"File Error",
err.to_string(),
&target.tag,
)),
}
}
#[cfg(test)]
mod tests {
use super::Touch;
#[test]
fn examples_work_as_expected() {
use crate::examples::test as test_examples;
test_examples(Touch {})
}
}