45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
use crate::prelude::*;
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use nu_engine::WholeStreamCommand;
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use nu_errors::ShellError;
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use nu_protocol::{dataframe::NuSeries, Signature, SyntaxShape};
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use nu_source::Tagged;
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pub struct DataFrame;
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impl WholeStreamCommand for DataFrame {
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fn name(&self) -> &str {
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"pls to-series"
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}
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fn usage(&self) -> &str {
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"Converts a pipelined List into a polars series"
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}
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fn signature(&self) -> Signature {
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Signature::build("pls to-series").optional(
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"name",
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SyntaxShape::String,
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"Optional series name",
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)
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}
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fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
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let tag = args.call_info.name_tag.clone();
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let name: Option<Tagged<String>> = args.opt(0)?;
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let name = name.map(|v| v.item);
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let series = NuSeries::try_from_iter(args.input, name)?;
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Ok(InputStream::one(series.to_value(tag)))
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}
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Takes an input stream and converts it to a polars series",
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example: "[1 2 3 4] | pls to-series my-col",
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result: None,
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}]
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}
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}
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