Initial implementation for uutils uname (#11684)

Hi,
This PR aims at implementing the first iteration for `uname` using
`uutils`. Couple of things:
* Currently my [PR](https://github.com/uutils/coreutils/pull/5921) to
make the required changes is pending in `uutils` repo.
* I guess the number of flags has to be investigated. Still the tests
cover all of them.


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Don't forget to add tests that cover your changes.

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- [X] `cargo fmt --all -- --check` to check standard code formatting
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- [X] `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used`
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---------

Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>

Cargo.lock

@@ -2176,9 +2176,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.152"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13e3bf6590cbc649f4d1a3eefc9d5d6eb746f5200ffb04e5e142700b8faa56e7"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "libflate"
@@ -2636,6 +2636,18 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "nix"
+version = "0.28.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab2156c4fce2f8df6c499cc1c763e4394b7482525bf2a9701c9d79d215f519e4"
+dependencies = [
+ "bitflags 2.4.2",
+ "cfg-if",
+ "cfg_aliases",
+ "libc",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -2957,6 +2969,7 @@ dependencies = [
  "uu_mkdir",
  "uu_mktemp",
  "uu_mv",
+ "uu_uname",
  "uu_whoami",
  "uucore",
  "uuid",
@@ -3780,6 +3793,16 @@ dependencies = [
  "array-init-cursor",
 ]
 
+[[package]]
+name = "platform-info"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6259c4860e53bf665016f1b2f46a8859cadfa717581dc9d597ae4069de6300f"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "polars"
 version = "0.37.0"
@@ -5510,9 +5533,9 @@ checksum = "cfb5fa503293557c5158bd215fdc225695e567a77e453f5d4452a50a193969bd"
 
 [[package]]
 name = "tempfile"
-version = "3.10.0"
+version = "3.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a365e8cd18e44762ef95d87f284f4b5cd04107fec2ff3052bd6a3e6069669e67"
+checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
 dependencies = [
  "cfg-if",
  "fastrand",
@@ -5983,9 +6006,9 @@ checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
 
 [[package]]
 name = "uu_cp"
-version = "0.0.24"
+version = "0.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "927869e2df48ac2f09ebc083459e96efc97028863a41dce96cfe8164c5c722ba"
+checksum = "fcbe045dc92209114afdfd366bd18f7b95dbf999f3eaa85ad6dca910b0be3d56"
 dependencies = [
  "clap",
  "filetime",
@@ -5999,9 +6022,9 @@ dependencies = [
 
 [[package]]
 name = "uu_mkdir"
-version = "0.0.24"
+version = "0.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d303b73c3a1ede83101c4a01c7f2f72f000ec9241a5d788ceba6a91a9ce1cb3"
+checksum = "040aa4584036b2f65e05387b0ea9ac468afce1db325743ce5f350689fd9ce4ae"
 dependencies = [
  "clap",
  "uucore",
@@ -6009,9 +6032,9 @@ dependencies = [
 
 [[package]]
 name = "uu_mktemp"
-version = "0.0.24"
+version = "0.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7e25b0928c96297836d3400c049d7c772073d0534720e4d13dd0e4a6ed52349"
+checksum = "f240a99c36d768153874d198c43605a45c86996b576262689a0f18248cc3bc57"
 dependencies = [
  "clap",
  "rand",
@@ -6021,9 +6044,9 @@ dependencies = [
 
 [[package]]
 name = "uu_mv"
-version = "0.0.24"
+version = "0.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ec472139edb0e91d9706779bfdf45814b139d8b23bea2ad0feaaac1fb6c1523"
+checksum = "0c99fd7c75e6e85553c92537314be3d9a64b4927051aa1608513feea2f933022"
 dependencies = [
  "clap",
  "fs_extra",
@@ -6032,10 +6055,21 @@ dependencies = [
 ]
 
 [[package]]
-name = "uu_whoami"
+name = "uu_uname"
-version = "0.0.24"
+version = "0.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "521f16cb67ba9f55341e00cd6b806556cefef430e9d80ea425607628da3a40e5"
+checksum = "5951832d73199636bde6c0d61cf960932b3c4450142c290375bc10c7abed6db5"
+dependencies = [
+ "clap",
+ "platform-info",
+ "uucore",
+]
+
+[[package]]
+name = "uu_whoami"
+version = "0.0.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3b44166eb6335aeac42744ea368cc4c32d3f2287a4ff765a5ce44d927ab8bb4"
 dependencies = [
  "clap",
  "libc",
@@ -6045,15 +6079,15 @@ dependencies = [
 
 [[package]]
 name = "uucore"
-version = "0.0.24"
+version = "0.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5de2eba1364f6274f35f121eb8671b98ac5fa8fe1271694721e17034e85e8bc"
+checksum = "23994a722acb43dbc56877e271c9723f167ae42c4c089f909b2d7dd106c3a9b4"
 dependencies = [
  "clap",
  "dunce",
  "glob",
  "libc",
- "nix 0.27.1",
+ "nix 0.28.0",
  "once_cell",
  "os_display",
  "uucore_procs",
@@ -6162,9 +6196,9 @@ dependencies = [
 
 [[package]]
 name = "walkdir"
-version = "2.4.0"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d71d857dc86794ca4c280d616f7da00d2dbfd8cd788846559a6813e6aa4b54ee"
+checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
 dependencies = [
  "same-file",
  "winapi-util",

Cargo.toml

@@ -147,12 +147,13 @@ unicode-segmentation = "1.11"
 unicode-width = "0.1"
 ureq = { version = "2.9", default-features = false }
 url = "2.2"
-uu_cp = "0.0.24"
+uu_cp = "0.0.25"
-uu_mkdir = "0.0.24"
+uu_mkdir = "0.0.25"
-uu_mktemp = "0.0.24"
+uu_mktemp = "0.0.25"
-uu_mv = "0.0.24"
+uu_mv = "0.0.25"
-uu_whoami = "0.0.24"
+uu_whoami = "0.0.25"
-uucore = "0.0.24"
+uu_uname = "0.0.25"
+uucore = "0.0.25"
 uuid = "1.8.0"
 v_htmlescape = "0.15.0"
 wax = "0.6"

crates/nu-command/Cargo.toml

@@ -91,6 +91,7 @@ uu_cp = { workspace = true }
 uu_mkdir = { workspace = true }
 uu_mktemp = { workspace = true }
 uu_mv = { workspace = true }
+uu_uname = { workspace = true }
 uu_whoami = { workspace = true }
 uuid = { workspace = true, features = ["v4"] }
 v_htmlescape = { workspace = true }

crates/nu-command/src/default_context.rs

@@ -122,6 +122,8 @@ pub fn add_shell_command_context(mut engine_state: EngineState) -> EngineState {
             Exec,
             NuCheck,
             Sys,
+            UName,
+
         };
 
         // Help

crates/nu-command/src/system/mod.rs

@@ -13,6 +13,7 @@ mod ps;
 mod registry_query;
 mod run_external;
 mod sys;
+mod uname;
 mod which_;
 
 pub use complete::Complete;
@@ -30,4 +31,5 @@ pub use ps::Ps;
 pub use registry_query::RegistryQuery;
 pub use run_external::{External, ExternalCommand};
 pub use sys::Sys;
+pub use uname::UName;
 pub use which_::Which;

crates/nu-command/src/system/uname.rs

@@ -0,0 +1,100 @@
+use nu_protocol::record;
+use nu_protocol::Value;
+use nu_protocol::{
+    ast::Call,
+    engine::{Command, EngineState, Stack},
+    Category, Example, PipelineData, ShellError, Signature, Type,
+};
+
+#[derive(Clone)]
+pub struct UName;
+
+impl Command for UName {
+    fn name(&self) -> &str {
+        "uname"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("uname")
+            .input_output_types(vec![(Type::Nothing, Type::Table(vec![]))])
+            .category(Category::System)
+    }
+
+    fn usage(&self) -> &str {
+        "Print certain system information."
+    }
+
+    fn search_terms(&self) -> Vec<&str> {
+        // add other terms?
+        vec!["system"]
+    }
+
+    fn run(
+        &self,
+        _engine_state: &EngineState,
+        _stack: &mut Stack,
+        call: &Call,
+        _input: PipelineData,
+    ) -> Result<PipelineData, ShellError> {
+        let span = call.head;
+        // Simulate `uname -all` is called every time
+        let opts = uu_uname::Options {
+            all: true,
+            kernel_name: false,
+            nodename: false,
+            kernel_release: false,
+            kernel_version: false,
+            machine: false,
+            processor: false,
+            hardware_platform: false,
+            os: false,
+        };
+        let output = uu_uname::UNameOutput::new(&opts).map_err(|e| ShellError::GenericError {
+            error: format!("{}", e),
+            msg: format!("{}", e),
+            span: None,
+            help: None,
+            inner: Vec::new(),
+        })?;
+        let outputs = [
+            output.kernel_name,
+            output.nodename,
+            output.kernel_release,
+            output.kernel_version,
+            output.machine,
+            output.os,
+        ];
+        let outputs = outputs
+            .iter()
+            .map(|name| {
+                Ok(name
+                    .as_ref()
+                    .ok_or("unknown")
+                    .map_err(|_| ShellError::NotFound { span })?
+                    .to_string())
+            })
+            .collect::<Result<Vec<String>, ShellError>>()?;
+        Ok(PipelineData::Value(
+            Value::record(
+                record! {
+                    "kernel-name" => Value::string(outputs[0].clone(), span),
+                    "nodename" => Value::string(outputs[1].clone(), span),
+                    "kernel-release" => Value::string(outputs[2].clone(), span),
+                    "kernel-version" => Value::string(outputs[3].clone(), span),
+                    "machine" => Value::string(outputs[4].clone(), span),
+                    "operating-system" => Value::string(outputs[5].clone(), span),
+                },
+                span,
+            ),
+            None,
+        ))
+    }
+
+    fn examples(&self) -> Vec<Example> {
+        vec![Example {
+            description: "Print all information",
+            example: "uname",
+            result: None,
+        }]
+    }
+}

crates/nu-command/tests/commands/mod.rs

@@ -111,7 +111,9 @@ mod try_;
 mod ucp;
 #[cfg(unix)]
 mod ulimit;
+
 mod umkdir;
+mod uname;
 mod uniq;
 mod uniq_by;
 mod update;

crates/nu-command/tests/commands/uname.rs

@@ -0,0 +1,12 @@
+use nu_test_support::nu;
+use nu_test_support::playground::Playground;
+#[test]
+fn test_uname_all() {
+    Playground::setup("uname_test_1", |dirs, _| {
+        let actual = nu!(
+            cwd: dirs.test(),
+            "uname"
+        );
+        assert!(actual.status.success())
+    })
+}