mirror of
https://github.com/nushell/nushell.git
synced 2024-11-07 09:04:18 +01:00
support binary input in length
(#14224)
Closes #13874 # User-Facing Changes `length` now supports binary input: ```nushell > random binary 1kb | length 1000 ```
This commit is contained in:
parent
d289c773d0
commit
8b19399b13
@ -1,3 +1,5 @@
|
||||
use std::io::Read;
|
||||
|
||||
use nu_engine::command_prelude::*;
|
||||
|
||||
#[derive(Clone)]
|
||||
@ -9,12 +11,15 @@ impl Command for Length {
|
||||
}
|
||||
|
||||
fn description(&self) -> &str {
|
||||
"Count the number of items in an input list or rows in a table."
|
||||
"Count the number of items in an input list, rows in a table, or bytes in binary data."
|
||||
}
|
||||
|
||||
fn signature(&self) -> nu_protocol::Signature {
|
||||
Signature::build("length")
|
||||
.input_output_types(vec![(Type::List(Box::new(Type::Any)), Type::Int)])
|
||||
.input_output_types(vec![
|
||||
(Type::List(Box::new(Type::Any)), Type::Int),
|
||||
(Type::Binary, Type::Int),
|
||||
])
|
||||
.category(Category::Filters)
|
||||
}
|
||||
|
||||
@ -44,6 +49,11 @@ impl Command for Length {
|
||||
example: "[{a:1 b:2}, {a:2 b:3}] | length",
|
||||
result: Some(Value::test_int(2)),
|
||||
},
|
||||
Example {
|
||||
description: "Count the number of bytes in binary data",
|
||||
example: "0x[01 02] | length",
|
||||
result: Some(Value::test_int(2)),
|
||||
},
|
||||
]
|
||||
}
|
||||
}
|
||||
@ -64,6 +74,19 @@ fn length_row(call: &Call, input: PipelineData) -> Result<PipelineData, ShellErr
|
||||
src_span: span,
|
||||
})
|
||||
}
|
||||
PipelineData::Value(Value::Binary { val, .. }, ..) => {
|
||||
Ok(Value::int(val.len() as i64, call.head).into_pipeline_data())
|
||||
}
|
||||
PipelineData::ByteStream(stream, _) if stream.type_().is_binary_coercible() => {
|
||||
Ok(Value::int(
|
||||
match stream.reader() {
|
||||
Some(r) => r.bytes().count() as i64,
|
||||
None => 0,
|
||||
},
|
||||
call.head,
|
||||
)
|
||||
.into_pipeline_data())
|
||||
}
|
||||
_ => {
|
||||
let mut count: i64 = 0;
|
||||
// Check for and propagate errors
|
||||
|
@ -1,4 +1,6 @@
|
||||
use nu_test_support::fs::Stub::FileWithContent;
|
||||
use nu_test_support::nu;
|
||||
use nu_test_support::playground::Playground;
|
||||
|
||||
#[test]
|
||||
fn length_columns_in_cal_table() {
|
||||
@ -20,3 +22,14 @@ fn length_fails_on_echo_record() {
|
||||
|
||||
assert!(actual.err.contains("only_supports_this_input_type"));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn length_byte_stream() {
|
||||
Playground::setup("length_bytes", |dirs, sandbox| {
|
||||
sandbox.mkdir("length_bytes");
|
||||
sandbox.with_files(&[FileWithContent("data.txt", "😀")]);
|
||||
|
||||
let actual = nu!(cwd: dirs.test(), "open data.txt | length");
|
||||
assert_eq!(actual.out, "4");
|
||||
});
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user