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port strings size engine-p (#3690) (#3753)

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migrate `size` command to engine-p.

I also tweaked the signature of the primary logic (`size`) to mimic `keep`.

Part of #3390.
This commit is contained in:
Eli Flanagan 2021-07-09 14:45:19 -04:00 committed by GitHub
parent 2b80f40164
commit 11cb5ed10e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 7 deletions
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14
crates/nu-command/src/commands/strings/size.rs
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@ -4,7 +4,7 @@ use crate::prelude::*;
use indexmap::indexmap;
use nu_engine::WholeStreamCommand;
use nu_errors::ShellError;
use nu_protocol::{ReturnSuccess, Signature, TaggedDictBuilder, UntaggedValue, Value};
use nu_protocol::{Signature, TaggedDictBuilder, UntaggedValue, Value};
use unicode_segmentation::UnicodeSegmentation;
pub struct Size;
@ -22,8 +22,8 @@ impl WholeStreamCommand for Size {
"Gather word count statistics on the text."
}
fn run_with_actions(&self, args: CommandArgs) -> Result<ActionStream, ShellError> {
Ok(size(args))
fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
size(args)
}
fn examples(&self) -> Vec<Example> {
@ -54,15 +54,15 @@ impl WholeStreamCommand for Size {
}
}
fn size(args: CommandArgs) -> ActionStream {
fn size(args: CommandArgs) -> Result<OutputStream, ShellError> {
let input = args.input;
let tag = args.call_info.name_tag;
let name_span = tag.span;
input
Ok(input
.map(move |v| {
if let Ok(s) = v.as_string() {
ReturnSuccess::value(count(&s, &v.tag))
Ok(count(&s, &v.tag))
} else {
Err(ShellError::labeled_error_with_secondary(
"Expected a string from pipeline",
@ -73,7 +73,7 @@ fn size(args: CommandArgs) -> ActionStream {
))
}
})
.into_action_stream()
.into_input_stream())
}
fn count(contents: &str, tag: impl Into<Tag>) -> Value {