93e8f6c05e
We split off the evaluation engine part of nu-cli into its own crate. This helps improve build times for nu-cli by 17% in my tests. It also helps us see a bit better what's the core engine portion vs the part specific to the interactive CLI piece. There's more than can be done here, but I think it's a good start in the right direction.
69 lines
1.8 KiB
Rust
69 lines
1.8 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::{ColumnPath, ReturnSuccess, Signature, SyntaxShape, UntaggedValue, Value};
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pub struct SubCommand;
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#[derive(Deserialize)]
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pub struct GetArgs {
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path: ColumnPath,
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}
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#[async_trait]
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impl WholeStreamCommand for SubCommand {
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fn name(&self) -> &str {
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"config get"
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}
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fn signature(&self) -> Signature {
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Signature::build("config get").required(
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"get",
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SyntaxShape::ColumnPath,
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"value to get from the config",
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)
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}
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fn usage(&self) -> &str {
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"Gets a value from the config"
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}
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async fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
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get(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: "Get the current startup commands",
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example: "config get startup",
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result: None,
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}]
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}
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}
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pub async fn get(args: CommandArgs) -> Result<OutputStream, ShellError> {
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let name_tag = args.call_info.name_tag.clone();
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let (GetArgs { path }, _) = args.process().await?;
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// NOTE: None because we are not loading a new config file, we just want to read from the
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// existing config
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let result = UntaggedValue::row(nu_data::config::read(&name_tag, &None)?).into_value(&name_tag);
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let value = crate::commands::get::get_column_path(&path, &result)?;
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Ok(match value {
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Value {
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value: UntaggedValue::Table(list),
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..
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} => {
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let list: Vec<_> = list
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.iter()
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.map(|x| ReturnSuccess::value(x.clone()))
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.collect();
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futures::stream::iter(list).to_output_stream()
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}
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x => OutputStream::one(ReturnSuccess::value(x)),
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})
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}
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