First commitv0.1.0

1 files changed, 46 insertions, 0 deletions

diff --git a/src/devices/stream.rs b/src/devices/stream.rs
new file mode 100644
index 0000000..3d376b6
--- /dev/null
+++ b/src/devices/stream.rs
@@ -0,0 +1,46 @@
+use std::io::{Read, Write, Stdin, Stdout};
+
+pub struct StreamDevice {
+    pub wake_flag: bool,
+
+    pub input_control: bool,
+    pub output_control: bool,
+    pub read_queue: Vec<u8>,
+
+    pub stdin: Stdin,
+    pub stdout: Stdout,
+}
+
+impl StreamDevice {
+    pub fn new() -> Self {
+        Self {
+            wake_flag: false,
+
+            input_control: true,
+            output_control: true,
+            read_queue: Vec::with_capacity(256),
+
+            stdin: std::io::stdin(),
+            stdout: std::io::stdout(),
+        }
+    }
+
+    // pub fn fetch_stdin(&mut self) {
+    //     match self.stdin.read(&mut self.read_queue) {
+    //         Ok() => (),
+    //         Err() => (),
+    //     }
+    // }
+
+    pub fn read_stdin(&mut self) -> u8 {
+        let mut buffer = [0; 1];
+        match self.stdin.read_exact(&mut buffer) {
+            Ok(()) => buffer[0],
+            Err(_) => 0,
+        }
+    }
+
+    pub fn write_stdout(&mut self, val: u8) {
+        self.stdout.write_all(&[val]).unwrap();
+    }
+}