nushell/crates/nu-cli/src/commands/to_tsv.rs
2020-06-14 07:13:36 +12:00

60 lines
1.3 KiB
Rust

use crate::commands::to_delimited_data::to_delimited_data;
use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use nu_errors::ShellError;
use nu_protocol::Signature;
pub struct ToTSV;
#[derive(Deserialize)]
pub struct ToTSVArgs {
headerless: bool,
}
#[async_trait]
impl WholeStreamCommand for ToTSV {
fn name(&self) -> &str {
"to tsv"
}
fn signature(&self) -> Signature {
Signature::build("to tsv").switch(
"headerless",
"do not output the column names as the first row",
None,
)
}
fn usage(&self) -> &str {
"Convert table into .tsv text"
}
async fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
to_tsv(args, registry).await
}
}
async fn to_tsv(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let name = args.call_info.name_tag.clone();
let (ToTSVArgs { headerless }, input) = args.process(&registry).await?;
to_delimited_data(headerless, '\t', "TSV", input, name).await
}
#[cfg(test)]
mod tests {
use super::ToTSV;
#[test]
fn examples_work_as_expected() {
use crate::examples::test as test_examples;
test_examples(ToTSV {})
}
}