better api

2 files changed, 8 insertions, 4 deletions

diff --git a/src/ios.rs b/src/ios.rs
index 2e5bd17..d510319 100644
--- a/src/ios.rs
+++ b/src/ios.rs
@@ -2,11 +2,11 @@ use core::libc::c_int;
 
 enum struct_termios {}
 
-pub struct PreserveTermios {
+struct PreserveTermios {
     priv state: *struct_termios,
 }
 
-pub fn PreserveTermios () -> ~PreserveTermios {
+fn PreserveTermios () -> ~PreserveTermios {
     ~PreserveTermios { state: unsafe { c::get() } }
 }
 
@@ -42,3 +42,8 @@ pub fn raw () -> bool {
 pub fn echo (enable: bool) -> bool {
     unsafe { c::echo(enable as c_int) as bool }
 }
+
+pub fn preserve<T> (body: &fn () -> T) -> T {
+    let _guard = PreserveTermios();
+    body()
+}
diff --git a/test/termios2.rs b/test/termios2.rs
index 13d14d3..6b70464 100644
--- a/test/termios2.rs
+++ b/test/termios2.rs
@@ -12,8 +12,7 @@ fn loop_chars () {
 }
 
 fn main () {
-    {
-        let preserve = term::ios::PreserveTermios();
+    do term::ios::preserve {
         term::ios::raw();
         loop_chars();
     }