nushell/crates/nu-cli/src/commands/trim.rs

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use crate::commands::WholeStreamCommand;
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use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::{ReturnSuccess, Signature, UntaggedValue};
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pub struct Trim;
impl WholeStreamCommand for Trim {
fn name(&self) -> &str {
"trim"
}
fn signature(&self) -> Signature {
Signature::build("trim")
}
fn usage(&self) -> &str {
"Trim leading and following whitespace from text data."
}
fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
trim(args, registry)
}
}
fn trim(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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let input = args.input;
Ok(input
.values
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.map(move |v| {
let string = String::extract(&v)?;
ReturnSuccess::value(UntaggedValue::string(string.trim()).into_value(v.tag()))
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})
.to_output_stream())
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}