forked from extern/nushell
103 lines
2.8 KiB
Rust
103 lines
2.8 KiB
Rust
use crate::commands::WholeStreamCommand;
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use crate::data::TaggedListBuilder;
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use crate::prelude::*;
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use crate::utils::data_processing::{columns_sorted, t_sort};
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use chrono::{DateTime, NaiveDate, Utc};
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use nu_errors::ShellError;
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use nu_protocol::{
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Primitive, ReturnSuccess, Signature, SyntaxShape, TaggedDictBuilder, UntaggedValue, Value,
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};
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use nu_source::Tagged;
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use nu_value_ext::get_data_by_key;
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pub struct TSortBy;
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#[derive(Deserialize)]
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pub struct TSortByArgs {
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#[serde(rename(deserialize = "show-columns"))]
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show_columns: bool,
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group_by: Option<Tagged<String>>,
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#[allow(unused)]
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split_by: Option<String>,
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}
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#[async_trait]
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impl WholeStreamCommand for TSortBy {
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fn name(&self) -> &str {
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"t-sort-by"
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}
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fn signature(&self) -> Signature {
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Signature::build("t-sort-by")
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.switch(
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"show-columns",
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"Displays the column names sorted",
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Some('c'),
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)
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.named(
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"group_by",
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SyntaxShape::String,
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"the name of the column to group by",
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Some('g'),
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)
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.named(
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"split_by",
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SyntaxShape::String,
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"the name of the column within the grouped by table to split by",
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Some('s'),
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)
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}
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fn usage(&self) -> &str {
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"Sort by the given columns."
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}
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async fn run(
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&self,
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args: CommandArgs,
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registry: &CommandRegistry,
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) -> Result<OutputStream, ShellError> {
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t_sort_by(args, registry)
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}
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}
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fn t_sort_by(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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let registry = registry.clone();
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let stream = async_stream! {
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let name = args.call_info.name_tag.clone();
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let (TSortByArgs { show_columns, group_by, ..}, mut input) = args.process(®istry).await?;
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let values: Vec<Value> = input.collect().await;
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let column_grouped_by_name = if let Some(grouped_by) = group_by {
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Some(grouped_by.item().clone())
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} else {
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None
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};
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if show_columns {
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for label in columns_sorted(column_grouped_by_name, &values[0], &name).into_iter() {
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yield ReturnSuccess::value(UntaggedValue::string(label.item).into_value(label.tag));
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}
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} else {
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match t_sort(column_grouped_by_name, None, &values[0], name) {
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Ok(sorted) => yield ReturnSuccess::value(sorted),
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Err(err) => yield Err(err)
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}
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}
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};
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Ok(stream.to_output_stream())
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}
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#[cfg(test)]
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mod tests {
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use super::TSortBy;
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#[test]
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fn examples_work_as_expected() {
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use crate::examples::test as test_examples;
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test_examples(TSortBy {})
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}
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}
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