tty: Build for Windows

Author: oech3

.github/workflows/make.yml

@@ -322,8 +322,8 @@ jobs:
         set -x
         # Check that we exclude unix programs to avoid build failure
         make PREFIX=/tmp/usr MULTICALL=y COMPLETIONS=n MANPAGES=n LOCALES=n \
-         SKIP_UTILS="arch b2sum base32 base64 basename basenc cat cksum comm cp csplit cut date dd df dir dircolors dirname du echo env expand expr factor false fmt fold head hostname join link ln ls md5sum mkdir mktemp more mv nl nproc numfmt od paste pr printenv printf ptx pwd readlink realpath rm rmdir seq sha1sum sha224sum sha256sum sha384sum sha512sum shred shuf sleep sort split sum sync tac tail tee test touch tr truncate tsort uname unexpand uniq unlink vdir wc whoami yes"
-        target/debug/coreutils.exe true
+         SKIP_UTILS="arch b2sum base32 base64 basename basenc cat cksum comm cp csplit cut date dd df dir dircolors dirname du echo env expand expr factor false fmt fold head hostname join link ln ls md5sum mkdir mktemp more mv nl nproc numfmt od paste pathchk pr printenv printf ptx pwd readlink realpath rm rmdir seq sha1sum sha224sum sha256sum sha384sum sha512sum shred shuf sleep sort split sum sync tac tail tee test touch tr truncate tsort tty uname unexpand uniq unlink vdir wc whoami yes"
+        target/debug/coreutils.exe ttue
 
   test_busybox:
     name: Tests/BusyBox test suite

.github/workflows/wasi.yml

@@ -37,7 +37,7 @@ jobs:
         CARGO_TARGET_WASM32_WASIP1_RUNNER: wasmtime
       run: |
         # Get all utilities and exclude ones that don't compile for wasm32-wasip1
-        EXCLUDE="dd|df|du|env|expr|mktemp|more|tac|test"
+        EXCLUDE="dd|df|du|env|expr|mktemp|more|tac|test|tty"
         UTILS=$(./util/show-utils.sh | tr ' ' '\n' | grep -vE "^($EXCLUDE)$" | sed 's/^/-p uu_/' | tr '\n' ' ')
         cargo test --target wasm32-wasip1 --no-default-features $UTILS
     - name: Run integration tests via wasmtime

Cargo.toml

@@ -156,6 +156,7 @@ feat_common_core = [
   "true",
   "truncate",
   "tsort",
+  "tty",
   "unexpand",
   "uniq",
   "unlink",
@@ -312,7 +313,6 @@ feat_require_unix_core = [
   "stat",
   "stty",
   "timeout",
-  "tty",
 ]
 # "feat_require_unix_utmpx" == set of utilities requiring unix utmp/utmpx support
 # * ref: <https://wiki.musl-libc.org/faq.html#Q:-Why-is-the-utmp/wtmp-functionality-only-implemented-as-stubs?>
@@ -337,7 +337,6 @@ feat_os_unix_fuchsia = [
   "mkfifo",
   "mknod",
   "nice",
-  "tty",
   "uname",
   "unlink",
 ]

src/uu/tty/src/tty.rs

@@ -7,7 +7,6 @@
 
 use clap::{Arg, ArgAction, Command};
 use std::io::{IsTerminal, Write};
-use uucore::display::OsWrite;
 use uucore::error::{UResult, set_exit_code};
 use uucore::format_usage;
 
@@ -38,18 +37,27 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     }
 
     let mut stdout = std::io::stdout();
-
+    #[cfg(unix)]
     let name = rustix::termios::ttyname(std::io::stdin(), Vec::with_capacity(8));
-
+    #[cfg(unix)]
     let write_result = if let Ok(name) = name {
         use std::os::unix::ffi::OsStrExt;
+        use uucore::display::OsWrite;
         let os_name = std::ffi::OsStr::from_bytes(name.as_bytes());
         stdout.write_all_os(os_name)
     } else {
         set_exit_code(1);
         writeln!(stdout, "{}", translate!("tty-not-a-tty"))
     };
 
+    #[cfg(target_os = "windows")]
+    let write_result = if std::io::stdin().is_terminal() {
+        writeln!(stdout, r"\\.\CON")
+    } else {
+        set_exit_code(1);
+        writeln!(stdout, "{}", translate!("tty-not-a-tty"))
+    };
+
     if write_result.is_err() || stdout.flush().is_err() {
         // Don't return to prevent a panic later when another flush is attempted
         // because the `uucore_procs::main` macro inserts a flush after execution for every utility.

tests/by-util/test_tty.rs

@@ -7,7 +7,7 @@ use std::fs::File;
 use uutests::new_ucmd;
 
 #[test]
-#[cfg(not(windows))]
+#[cfg(unix)]
 fn test_dev_null() {
     new_ucmd!()
         .set_stdin(File::open("/dev/null").unwrap())
@@ -16,7 +16,7 @@ fn test_dev_null() {
 }
 
 #[test]
-#[cfg(not(windows))]
+#[cfg(unix)]
 fn test_dev_null_silent() {
     new_ucmd!()
         .args(&["-s"])
@@ -26,27 +26,31 @@ fn test_dev_null_silent() {
 }
 
 #[test]
+#[cfg(unix)]
 fn test_close_stdin() {
     let mut child = new_ucmd!().run_no_wait();
     child.close_stdin();
     child.wait().unwrap().code_is(1).stdout_is("not a tty\n");
 }
 
 #[test]
+#[cfg(unix)]
 fn test_close_stdin_silent() {
     let mut child = new_ucmd!().arg("-s").run_no_wait();
     child.close_stdin();
     child.wait().unwrap().code_is(1).no_stdout();
 }
 
 #[test]
+#[cfg(unix)]
 fn test_close_stdin_silent_long() {
     let mut child = new_ucmd!().arg("--silent").run_no_wait();
     child.close_stdin();
     child.wait().unwrap().code_is(1).no_stdout();
 }
 
 #[test]
+#[cfg(unix)]
 fn test_close_stdin_silent_alias() {
     let mut child = new_ucmd!().arg("--quiet").run_no_wait();
     child.close_stdin();