Put the terminal in raw mode.

2 files changed, 56 insertions, 11 deletions

diff --git a/src/main.rs b/src/main.rs
index a516ea4..63ae538 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,6 +6,8 @@ use std::ffi::{OsStr, OsString};
 use std::path::Path;
 
 fn edit(file: &OsStr) -> Result<(), String> {
+    let _raw_handle = term::raw();
+
     let r = match Rope::open(Path::new(file)) {
         Ok(r) => r,
         Err(err) => {
diff --git a/src/term.rs b/src/term.rs
index f8246fd..149f00f 100644
--- a/src/term.rs
+++ b/src/term.rs
@@ -1,18 +1,61 @@
-use libc::{c_int, winsize};
+use libc::{termios, winsize};
 
 pub fn size() -> Option<winsize> {
-    let mut window: winsize = winsize {
-        ws_row: 0,
-        ws_col: 0,
-        ws_xpixel: 0,
-        ws_ypixel: 0,
-    };
-    let result: c_int;
     unsafe {
-        result = libc::ioctl(1, libc::TIOCGWINSZ, &mut window);
+        let mut window: winsize = std::mem::zeroed();
+        if libc::ioctl(1, libc::TIOCGWINSZ, &mut window) < 0 {
+            return None;
+        }
+        return Some(window);
+    }
+}
+
+fn get_attr() -> Option<termios> {
+    unsafe {
+        let mut attr: termios = std::mem::zeroed();
+        if libc::tcgetattr(1, &mut attr) < 0 {
+            return None;
+        }
+        return Some(attr);
     }
-    if result < 0 {
+}
+
+fn set_attr(attrs: &termios) -> Option<()> {
+    unsafe {
+        if libc::tcsetattr(1, libc::TCSANOW, attrs) < 0 {
+            return None;
+        }
+        return Some(());
+    }
+}
+
+fn make_raw() -> termios {
+    unsafe {
+        let mut attr: termios = std::mem::zeroed();
+        libc::cfmakeraw(&mut attr);
+        return attr;
+    }
+}
+
+pub struct RawHandle {
+    old: termios,
+}
+
+impl Drop for RawHandle {
+    fn drop(&mut self) {
+        set_attr(&self.old);
+    }
+}
+
+pub fn raw() -> Option<RawHandle> {
+    let old = match get_attr() {
+        Some(old) => old,
+        None => {
+            return None;
+        }
+    };
+    if let None = set_attr(&make_raw()) {
         return None;
     }
-    return Some(window);
+    return Some(RawHandle { old: old });
 }