1 files changed, 66 insertions, 0 deletions
diff --git a/src/blocking/pty.rs b/src/blocking/pty.rs
new file mode 100644
index 0000000..7900b50
--- /dev/null
+++ b/src/blocking/pty.rs
@@ -0,0 +1,66 @@
+pub struct Pty {
+    pt: std::fs::File,
+    ptsname: std::path::PathBuf,
+}
+
+impl Pty {
+    pub fn new() -> crate::Result<Self> {
+        let (pt, ptsname) =
+            crate::sys::create_pt().map_err(crate::error::create_pty)?;
+        Ok(Self { pt, ptsname })
+    }
+
+    pub fn resize(&self, size: crate::Size) -> crate::error::Result<()> {
+        crate::sys::set_term_size(self, size)
+            .map_err(crate::error::set_term_size)
+    }
+
+    pub(crate) fn pts(&self) -> std::io::Result<std::fs::File> {
+        let fh = std::fs::OpenOptions::new()
+            .read(true)
+            .write(true)
+            .open(&self.ptsname)?;
+        Ok(fh)
+    }
+}
+
+impl std::ops::Deref for Pty {
+    type Target = std::fs::File;
+
+    fn deref(&self) -> &Self::Target {
+        &self.pt
+    }
+}
+
+impl std::ops::DerefMut for Pty {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.pt
+    }
+}
+
+impl std::os::unix::io::AsRawFd for Pty {
+    fn as_raw_fd(&self) -> std::os::unix::io::RawFd {
+        self.pt.as_raw_fd()
+    }
+}
+
+// there is a Read impl for &std::fs::File, but without this explicit impl,
+// rust finds the Read impl for std::fs::File first, and then complains that
+// it requires &mut self, because method resolution/autoderef doesn't take
+// mutability into account
+impl std::io::Read for &Pty {
+    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
+        (&self.pt).read(buf)
+    }
+}
+
+// same as above
+impl std::io::Write for &Pty {
+    fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
+        (&self.pt).write(buf)
+    }
+
+    fn flush(&mut self) -> std::io::Result<()> {
+        (&self.pt).flush()
+    }
+}