Rollup merge of #119996 - joboet:move_pal_os_str, r=ChrisDenton

Move OS String implementation into `sys`

Part of #117276. The new structure is really useful here, since we can easily eliminate a number of ugly `#[path]`-based imports.

In the future, it might be good to move the WTF-8 implementation directly to the OS string implementation, I cannot see it being used anywhere else. That is a story for another PR, however.

Author: Nadrieril

library/std/src/sys/mod.rs

@@ -3,6 +3,7 @@
 /// descriptors.
 mod pal;
 
+pub mod os_str;
 mod personality;
 
 // FIXME(117276): remove this, move feature implementations into individual

library/std/src/sys/pal/unix/os_str.rs renamed to library/std/src/sys/os_str/bytes.rs

@@ -14,7 +14,6 @@ use crate::sys_common::{AsInner, IntoInner};
 use core::str::Utf8Chunks;
 
 #[cfg(test)]
-#[path = "../unix/os_str/tests.rs"]
 mod tests;
 
 #[derive(Hash)]

library/std/src/sys/pal/unix/os_str/tests.rs renamed to library/std/src/sys/os_str/bytes/tests.rs

@@ -0,0 +1,12 @@
+cfg_if::cfg_if! {
+    if #[cfg(any(
+        target_os = "windows",
+        target_os = "uefi",
+    ))] {
+        mod wtf8;
+        pub use wtf8::{Buf, Slice};
+    } else {
+        mod bytes;
+        pub use bytes::{Buf, Slice};
+    }
+}

library/std/src/sys/os_str/mod.rs

@@ -30,8 +30,6 @@ pub mod io;
 pub mod memchr;
 pub mod net;
 pub mod os;
-#[path = "../unix/os_str.rs"]
-pub mod os_str;
 #[path = "../unix/path.rs"]
 pub mod path;
 #[path = "../unsupported/pipe.rs"]

library/std/src/sys/pal/windows/os_str.rs renamed to library/std/src/sys/os_str/wtf8.rs

@@ -24,8 +24,6 @@ pub mod io;
 pub mod memchr;
 pub mod net;
 pub mod os;
-#[path = "../unix/os_str.rs"]
-pub mod os_str;
 pub mod path;
 #[path = "../unsupported/pipe.rs"]
 pub mod pipe;

library/std/src/sys/pal/hermit/mod.rs

@@ -31,8 +31,6 @@ pub mod fs;
 pub mod io;
 pub mod net;
 pub mod os;
-#[path = "../unix/os_str.rs"]
-pub mod os_str;
 pub mod path;
 #[path = "../unsupported/pipe.rs"]
 pub mod pipe;

library/std/src/sys/pal/sgx/mod.rs

@@ -27,8 +27,6 @@ pub mod net;
 #[path = "../unsupported/once.rs"]
 pub mod once;
 pub mod os;
-#[path = "../unix/os_str.rs"]
-pub mod os_str;
 #[path = "../unix/path.rs"]
 pub mod path;
 #[path = "../unsupported/pipe.rs"]

library/std/src/sys/pal/solid/mod.rs

@@ -28,8 +28,6 @@ pub mod net;
 #[path = "../unsupported/once.rs"]
 pub mod once;
 pub mod os;
-#[path = "../windows/os_str.rs"]
-pub mod os_str;
 pub mod path;
 #[path = "../unsupported/pipe.rs"]
 pub mod pipe;