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e879d4ecaf
# Description Does some misc changes to `ListStream`: - Moves it into its own module/file separate from `RawStream`. - `ListStream`s now have an associated `Span`. - This required changes to `ListStreamInfo` in `nu-plugin`. Note sure if this is a breaking change for the plugin protocol. - Hides the internals of `ListStream` but also adds a few more methods. - This includes two functions to more easily alter a stream (these take a `ListStream` and return a `ListStream` instead of having to go through the whole `into_pipeline_data(..)` route). - `map`: takes a `FnMut(Value) -> Value` - `modify`: takes a function to modify the inner stream.
56 lines
1.4 KiB
Rust
56 lines
1.4 KiB
Rust
use chrono_tz::TZ_VARIANTS;
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use nu_engine::command_prelude::*;
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#[derive(Clone)]
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pub struct SubCommand;
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impl Command for SubCommand {
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fn name(&self) -> &str {
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"date list-timezone"
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}
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fn signature(&self) -> Signature {
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Signature::build("date list-timezone")
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.input_output_types(vec![(Type::Nothing, Type::table())])
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.category(Category::Date)
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}
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fn usage(&self) -> &str {
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"List supported time zones."
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}
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fn search_terms(&self) -> Vec<&str> {
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vec!["UTC", "GMT", "tz"]
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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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Ok(TZ_VARIANTS
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.iter()
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.map(move |x| {
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Value::record(
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record! { "timezone" => Value::string(x.name(), head) },
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head,
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)
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})
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.into_pipeline_data(head, engine_state.ctrlc.clone()))
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}
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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example: "date list-timezone | where timezone =~ Shanghai",
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description: "Show time zone(s) that contains 'Shanghai'",
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result: Some(Value::test_list(vec![Value::test_record(record! {
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"timezone" => Value::test_string("Asia/Shanghai"),
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})])),
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}]
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}
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}
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