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https://github.com/nushell/nushell.git
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399a7c8836
# Description This PR introduces a new `Signals` struct to replace our adhoc passing around of `ctrlc: Option<Arc<AtomicBool>>`. Doing so has a few benefits: - We can better enforce when/where resetting or triggering an interrupt is allowed. - Consolidates `nu_utils::ctrl_c::was_pressed` and other ad-hoc re-implementations into a single place: `Signals::check`. - This allows us to add other types of signals later if we want. E.g., exiting or suspension. - Similarly, we can more easily change the underlying implementation if we need to in the future. - Places that used to have a `ctrlc` of `None` now use `Signals::empty()`, so we can double check these usages for correctness in the future.
105 lines
3.4 KiB
Rust
105 lines
3.4 KiB
Rust
use nu_engine::command_prelude::*;
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use nu_protocol::DataSource;
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#[derive(Clone)]
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pub struct MetadataSet;
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impl Command for MetadataSet {
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fn name(&self) -> &str {
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"metadata set"
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}
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fn usage(&self) -> &str {
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"Set the metadata for items in the stream."
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}
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fn signature(&self) -> nu_protocol::Signature {
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Signature::build("metadata set")
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.input_output_types(vec![(Type::Any, Type::Any)])
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.switch(
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"datasource-ls",
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"Assign the DataSource::Ls metadata to the input",
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Some('l'),
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)
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.named(
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"datasource-filepath",
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SyntaxShape::Filepath,
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"Assign the DataSource::FilePath metadata to the input",
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Some('f'),
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)
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.named(
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"content-type",
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SyntaxShape::String,
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"Assign content type metadata to the input",
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Some('c'),
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)
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.allow_variants_without_examples(true)
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.category(Category::Debug)
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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<PipelineData, ShellError> {
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let head = call.head;
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let ds_fp: Option<String> = call.get_flag(engine_state, stack, "datasource-filepath")?;
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let ds_ls = call.has_flag(engine_state, stack, "datasource-ls")?;
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let content_type: Option<String> = call.get_flag(engine_state, stack, "content-type")?;
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let signals = engine_state.signals().clone();
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let metadata = input
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.metadata()
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.clone()
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.unwrap_or_default()
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.with_content_type(content_type);
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match (ds_fp, ds_ls) {
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(Some(path), false) => Ok(input.into_pipeline_data_with_metadata(
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head,
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signals,
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metadata.with_data_source(DataSource::FilePath(path.into())),
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)),
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(None, true) => Ok(input.into_pipeline_data_with_metadata(
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head,
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signals,
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metadata.with_data_source(DataSource::Ls),
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)),
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_ => Ok(input.into_pipeline_data_with_metadata(head, signals, metadata)),
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}
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}
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fn examples(&self) -> Vec<Example> {
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vec![
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Example {
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description: "Set the metadata of a table literal",
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example: "[[name color]; [Cargo.lock '#ff0000'] [Cargo.toml '#00ff00'] [README.md '#0000ff']] | metadata set --datasource-ls",
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result: None,
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},
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Example {
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description: "Set the metadata of a file path",
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example: "'crates' | metadata set --datasource-filepath $'(pwd)/crates' | metadata",
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result: None,
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},
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Example {
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description: "Set the metadata of a file path",
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example: "'crates' | metadata set --content-type text/plain | metadata",
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result: Some(Value::record(record!("content_type" => Value::string("text/plain", Span::test_data())), Span::test_data())),
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},
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]
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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 crate::{test_examples_with_commands, Metadata};
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use super::*;
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#[test]
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fn test_examples() {
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test_examples_with_commands(MetadataSet {}, &[&Metadata {}])
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}
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}
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