100 lines
2.7 KiB
Rust
100 lines
2.7 KiB
Rust
use crate::date::utils::parse_date_from_string;
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use chrono::{DateTime, FixedOffset, Local};
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use chrono_humanize::HumanTime;
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use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{Example, PipelineData, ShellError, Signature, Span, Value};
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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 humanize"
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}
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fn signature(&self) -> Signature {
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Signature::build("date humanize")
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}
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fn usage(&self) -> &str {
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"Print a 'humanized' format for the date, relative to now."
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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 head = call.head;
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input.map(move |value| helper(value, head), engine_state.ctrlc.clone())
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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: "Print a 'humanized' format for the date, relative to now.",
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example: "date humanize",
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result: Some(Value::String {
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val: "now".to_string(),
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span: Span::unknown(),
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}),
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},
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Example {
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description: "Print a 'humanized' format for the date, relative to now.",
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example: r#""2021-10-22 20:00:12 +01:00" | date humanize"#,
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result: None,
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},
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]
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}
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}
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fn helper(value: Value, head: Span) -> Value {
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match value {
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Value::Nothing { span: _ } => {
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let dt = Local::now();
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Value::String {
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val: humanize_date(dt.with_timezone(dt.offset())),
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span: head,
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}
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}
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Value::String { val, span: _ } => {
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let dt = parse_date_from_string(val);
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match dt {
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Ok(x) => Value::String {
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val: humanize_date(x),
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span: head,
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},
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Err(e) => e,
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}
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}
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Value::Date { val, span: _ } => Value::String {
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val: humanize_date(val),
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span: head,
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},
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_ => Value::Error {
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error: ShellError::UnsupportedInput(
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String::from("Date cannot be parsed / date format is not supported"),
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Span::unknown(),
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),
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},
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}
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}
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fn humanize_date(dt: DateTime<FixedOffset>) -> String {
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HumanTime::from(dt).to_string()
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn test_examples() {
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use crate::test_examples;
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test_examples(SubCommand {})
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}
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}
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