nushell/src/commands/to_tsv.rs
Yehuda Katz e4226def16 Extract core stuff into own crates
This commit extracts five new crates:

- nu-source, which contains the core source-code handling logic in Nu,
  including Text, Span, and also the pretty.rs-based debug logic
- nu-parser, which is the parser and expander logic
- nu-protocol, which is the bulk of the types and basic conveniences
  used by plugins
- nu-errors, which contains ShellError, ParseError and error handling
  conveniences
- nu-textview, which is the textview plugin extracted into a crate

One of the major consequences of this refactor is that it's no longer
possible to `impl X for Spanned<Y>` outside of the `nu-source` crate, so
a lot of types became more concrete (Value became a concrete type
instead of Spanned<Value>, for example).

This also turned a number of inherent methods in the main nu crate into
plain functions (impl Value {} became a bunch of functions in the
`value` namespace in `crate::data::value`).
2019-12-02 10:54:12 -08:00

45 lines
1009 B
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,
}
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",
)
}
fn usage(&self) -> &str {
"Convert table into .tsv text"
}
fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
args.process(registry, to_tsv)?.run()
}
}
fn to_tsv(
ToTSVArgs { headerless }: ToTSVArgs,
runnable_context: RunnableContext,
) -> Result<OutputStream, ShellError> {
to_delimited_data(headerless, '\t', "TSV", runnable_context)
}