who: implement for Windows

Cargo.toml

@@ -306,7 +306,7 @@ feat_os_unix_musl = [
   "feat_require_unix_utmpx",
 ]
 # "feat_os_windows" == set of utilities which can be built/run on modern windows platforms
-feat_os_windows = ["feat_Tier1", "stdbuf"]
+feat_os_windows = ["feat_Tier1", "stdbuf", "who"]
 ## (secondary platforms) feature sets
 # "feat_os_unix_gnueabihf" == set of utilities which can be built/run on the "arm-unknown-linux-gnueabihf" target (ARMv6 Linux [hardfloat])
 feat_os_unix_gnueabihf = [

src/uu/who/Cargo.toml

@@ -23,9 +23,21 @@ doctest = false
 
 [dependencies]
 clap = { workspace = true }
+fluent = { workspace = true }
+time = { workspace = true, features = ["formatting", "local-offset"] }
+
+[target.'cfg(unix)'.dependencies]
 rustix = { workspace = true, features = ["fs", "termios"] }
 uucore = { workspace = true, features = ["utmpx"] }
-fluent = { workspace = true }
+
+[target.'cfg(windows)'.dependencies]
+dns-lookup = { workspace = true }
+uucore = { workspace = true }
+windows-sys = { workspace = true, features = [
+  "Win32_Foundation",
+  "Win32_System_RemoteDesktop",
+  "Win32_System_Threading",
+] }
 
 [lints]
 workspace = true

src/uu/who/src/platform/mod.rs

@@ -3,12 +3,13 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-#[cfg(not(target_os = "openbsd"))]
+#[cfg(all(unix, not(target_os = "openbsd")))]
 mod unix;
-#[cfg(not(target_os = "openbsd"))]
-pub use self::unix::*;
+#[cfg(all(unix, not(target_os = "openbsd")))]
+pub(crate) use unix::*;
+
+#[cfg(windows)]
+mod windows;
 
 #[cfg(target_os = "openbsd")]
 mod openbsd;
-#[cfg(target_os = "openbsd")]
-pub use self::openbsd::*;

src/uu/who/src/platform/openbsd.rs

@@ -5,13 +5,17 @@
 
 // Specific implementation for OpenBSD: tool unsupported (utmpx not supported)
 
-use crate::uu_app;
-
+use crate::Who;
 use uucore::error::UResult;
 use uucore::translate;
 
-pub fn uumain(args: impl uucore::Args) -> UResult<()> {
-    let _matches = uucore::clap_localization::handle_clap_result(uu_app(), args)?;
-    println!("{}", translate!("who-unsupported-openbsd"));
-    Ok(())
+impl Who {
+    #[allow(
+        clippy::unnecessary_wraps,
+        reason = "signature shared across platforms"
+    )]
+    pub(crate) fn exec(&mut self) -> UResult<()> {
+        println!("{}", translate!("who-unsupported-openbsd"));
+        Ok(())
+    }
 }