forked from extern/nushell
564c2dd7d1
* Add example test to zip * Port merge command from Nushell On top of the original merge, this one should not collect a stream returned from the merged block and allows merging records.
113 lines
2.8 KiB
Rust
113 lines
2.8 KiB
Rust
use nu_engine::CallExt;
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use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{
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Category, Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, Signature,
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Span, SyntaxShape, Value,
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};
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#[derive(Clone)]
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pub struct Zip;
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impl Command for Zip {
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fn name(&self) -> &str {
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"zip"
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}
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fn usage(&self) -> &str {
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"Combine a stream with the input"
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}
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fn signature(&self) -> nu_protocol::Signature {
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Signature::build("zip")
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.required("other", SyntaxShape::Any, "the other input")
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.category(Category::Filters)
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}
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fn examples(&self) -> Vec<Example> {
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let test_row_1 = Value::List {
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vals: vec![
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Value::Int {
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val: 1,
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span: Span::test_data(),
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},
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Value::Int {
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val: 4,
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span: Span::test_data(),
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},
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],
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span: Span::test_data(),
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};
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let test_row_2 = Value::List {
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vals: vec![
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Value::Int {
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val: 2,
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span: Span::test_data(),
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},
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Value::Int {
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val: 5,
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span: Span::test_data(),
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},
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],
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span: Span::test_data(),
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};
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let test_row_3 = Value::List {
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vals: vec![
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Value::Int {
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val: 3,
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span: Span::test_data(),
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},
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Value::Int {
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val: 6,
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span: Span::test_data(),
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},
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],
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span: Span::test_data(),
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};
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vec![Example {
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example: "1..3 | zip 4..6",
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description: "Zip multiple streams and get one of the results",
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result: Some(Value::List {
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vals: vec![test_row_1, test_row_2, test_row_3],
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span: Span::test_data(),
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}),
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}]
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}
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fn run(
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&self,
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engine_state: &EngineState,
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stack: &mut Stack,
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call: &Call,
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input: PipelineData,
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) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
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let other: Value = call.req(engine_state, stack, 0)?;
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let head = call.head;
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let ctrlc = engine_state.ctrlc.clone();
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Ok(input
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.into_iter()
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.zip(other.into_pipeline_data().into_iter())
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.map(move |(x, y)| Value::List {
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vals: vec![x, y],
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span: head,
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})
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.into_pipeline_data(ctrlc))
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn test_examples() {
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use crate::test_examples;
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test_examples(Zip {})
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}
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}
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