1 files changed, 38 insertions, 0 deletions
diff --git a/third_party/rust/tokio-fs/src/stdin.rs b/third_party/rust/tokio-fs/src/stdin.rs
new file mode 100644
index 0000000000..f41b8dc84c
--- /dev/null
+++ b/third_party/rust/tokio-fs/src/stdin.rs
@@ -0,0 +1,38 @@
+use tokio_io::{AsyncRead};
+
+use std::io::{self, Read, Stdin as StdStdin};
+
+/// A handle to the standard input stream of a process.
+///
+/// The handle implements the [`AsyncRead`] trait, but beware that concurrent
+/// reads of `Stdin` must be executed with care.
+///
+/// Created by the [`stdin`] function.
+///
+/// [`stdin`]: fn.stdin.html
+/// [`AsyncRead`]: trait.AsyncRead.html
+#[derive(Debug)]
+pub struct Stdin {
+    std: StdStdin,
+}
+
+/// Constructs a new handle to the standard input of the current process.
+///
+/// The returned handle allows reading from standard input from the within the
+/// Tokio runtime.
+pub fn stdin() -> Stdin {
+    let std = io::stdin();
+    Stdin { std }
+}
+
+impl Read for Stdin {
+    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+        ::would_block(|| self.std.read(buf))
+    }
+}
+
+impl AsyncRead for Stdin {
+    unsafe fn prepare_uninitialized_buffer(&self, _: &mut [u8]) -> bool {
+        false
+    }
+}