forked from extern/nushell
42 lines
1.1 KiB
Rust
42 lines
1.1 KiB
Rust
use nu_engine::CallExt;
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use nu_protocol::ast::{Call, CellPath};
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{Category, IntoPipelineData, PipelineData, Signature, SyntaxShape};
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#[derive(Clone)]
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pub struct Get;
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impl Command for Get {
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fn name(&self) -> &str {
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"get"
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}
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fn usage(&self) -> &str {
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"Extract data using a cell path."
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}
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fn signature(&self) -> nu_protocol::Signature {
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Signature::build("get")
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.required(
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"cell_path",
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SyntaxShape::CellPath,
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"the cell path to the data",
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)
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.category(Category::Filters)
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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 cell_path: CellPath = call.req(engine_state, stack, 0)?;
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input
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.follow_cell_path(&cell_path.members, call.head)
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.map(|x| x.into_pipeline_data())
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}
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}
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