Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

vendor/cc/src/os_pipe/windows.rs

@@ -0,0 +1,24 @@
+use crate::windows_sys::{CreatePipe, INVALID_HANDLE_VALUE};
+use std::{fs::File, io, os::windows::prelude::*, ptr};
+
+/// NOTE: These pipes do not support IOCP.
+///
+/// If IOCP is needed, then you might want to emulate
+/// anonymous pipes with CreateNamedPipe, as Rust's stdlib does.
+pub(super) fn pipe() -> io::Result<(File, File)> {
+    let mut read_pipe = INVALID_HANDLE_VALUE;
+    let mut write_pipe = INVALID_HANDLE_VALUE;
+
+    let ret = unsafe { CreatePipe(&mut read_pipe, &mut write_pipe, ptr::null_mut(), 0) };
+
+    if ret == 0 {
+        Err(io::Error::last_os_error())
+    } else {
+        unsafe {
+            Ok((
+                File::from_raw_handle(read_pipe as RawHandle),
+                File::from_raw_handle(write_pipe as RawHandle),
+            ))
+        }
+    }
+}