d06f457b2a
* 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>
72 lines
1.8 KiB
Rust
72 lines
1.8 KiB
Rust
use crate::prelude::*;
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use nu_data::base::reject_fields;
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use nu_engine::WholeStreamCommand;
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use nu_errors::ShellError;
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use nu_protocol::{ReturnSuccess, Signature, SyntaxShape};
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use nu_source::Tagged;
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#[derive(Deserialize)]
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pub struct RejectArgs {
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rest: Vec<Tagged<String>>,
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}
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pub struct Reject;
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#[async_trait]
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impl WholeStreamCommand for Reject {
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fn name(&self) -> &str {
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"reject"
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}
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fn signature(&self) -> Signature {
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Signature::build("reject").rest(SyntaxShape::String, "the names of columns to remove")
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}
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fn usage(&self) -> &str {
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"Remove the given columns from the table. If you want to remove rows, try 'drop'."
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}
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async fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
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reject(args).await
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}
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Lists the files in a directory without showing the modified column",
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example: "ls | reject modified",
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result: None,
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}]
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}
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}
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async fn reject(args: CommandArgs) -> Result<OutputStream, ShellError> {
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let name = args.call_info.name_tag.clone();
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let (RejectArgs { rest: fields }, input) = args.process().await?;
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if fields.is_empty() {
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return Err(ShellError::labeled_error(
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"Reject requires fields",
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"needs parameter",
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name,
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));
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}
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let fields: Vec<_> = fields.iter().map(|f| f.item.clone()).collect();
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Ok(input
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.map(move |item| ReturnSuccess::value(reject_fields(&item, &fields, &item.tag)))
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.to_output_stream())
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}
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#[cfg(test)]
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mod tests {
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use super::Reject;
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use super::ShellError;
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#[test]
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fn examples_work_as_expected() -> Result<(), ShellError> {
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use crate::examples::test as test_examples;
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Ok(test_examples(Reject {})?)
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}
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}
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