forked from extern/nushell
e4226def16
This commit extracts five new crates:
- nu-source, which contains the core source-code handling logic in Nu,
including Text, Span, and also the pretty.rs-based debug logic
- nu-parser, which is the parser and expander logic
- nu-protocol, which is the bulk of the types and basic conveniences
used by plugins
- nu-errors, which contains ShellError, ParseError and error handling
conveniences
- nu-textview, which is the textview plugin extracted into a crate
One of the major consequences of this refactor is that it's no longer
possible to `impl X for Spanned<Y>` outside of the `nu-source` crate, so
a lot of types became more concrete (Value became a concrete type
instead of Spanned<Value>, for example).
This also turned a number of inherent methods in the main nu crate into
plain functions (impl Value {} became a bunch of functions in the
`value` namespace in `crate::data::value`).
56 lines
1.3 KiB
Rust
56 lines
1.3 KiB
Rust
use crate::commands::WholeStreamCommand;
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use crate::data::base::property_get::get_data_by_key;
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use crate::prelude::*;
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use nu_errors::ShellError;
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use nu_protocol::{Signature, SyntaxShape, Value};
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use nu_source::Tagged;
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pub struct SortBy;
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#[derive(Deserialize)]
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pub struct SortByArgs {
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rest: Vec<Tagged<String>>,
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}
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impl WholeStreamCommand for SortBy {
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fn name(&self) -> &str {
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"sort-by"
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}
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fn signature(&self) -> Signature {
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Signature::build("sort-by").rest(SyntaxShape::String, "the column(s) to sort by")
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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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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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args.process(registry, sort_by)?.run()
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}
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}
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fn sort_by(
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SortByArgs { rest }: SortByArgs,
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mut context: RunnableContext,
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) -> Result<OutputStream, ShellError> {
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Ok(OutputStream::new(async_stream! {
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let mut vec = context.input.drain_vec().await;
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let calc_key = |item: &Value| {
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rest.iter()
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.map(|f| get_data_by_key(item, f.borrow_spanned()).map(|i| i.clone()))
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.collect::<Vec<Option<Value>>>()
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};
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vec.sort_by_cached_key(calc_key);
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for item in vec {
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yield item.into();
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}
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}))
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}
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