32-bit support

src/size.rs

@@ -12,18 +12,30 @@ struct TermSize {
     _y: c_ushort,
 }
 
+// Since attributes on non-item statements is not stable yet, we use a function.
+#[cfg(target_pointer_width = "64")]
+fn tiocgwinsz() -> u64 {
+    use termios::TIOCGWINSZ;
+    TIOCGWINSZ as u64
+}
+#[cfg(target_pointer_width = "32")]
+fn tiocgwinsz() -> u32 {
+    use termios::TIOCGWINSZ;
+    TIOCGWINSZ as u32
+}
+
+
 /// Get the size of the terminal.
 #[cfg(not(target_os = "redox"))]
 pub fn terminal_size() -> Result<(usize, usize), TerminalError> {
     use libc::ioctl;
     use libc::STDOUT_FILENO;
-    use termios::TIOCGWINSZ;
 
     use std::mem;
     unsafe {
         let mut size: TermSize = mem::zeroed();
 
-        if ioctl(STDOUT_FILENO, TIOCGWINSZ, &mut size as *mut _) == 0 {
+        if ioctl(STDOUT_FILENO, tiocgwinsz(), &mut size as *mut _) == 0 {
             Ok((size.col as usize, size.row as usize))
         } else {
             Err(TerminalError::TermSizeError)

src/termios.rs

 use libc::{c_int, c_uint, c_uchar};
 
 #[cfg(not(target_os = "macos"))]
-pub const TIOCGWINSZ: u64 = 0x00005413;
+pub const TIOCGWINSZ: usize = 0x00005413;
 
 #[cfg(target_os = "macos")]
-pub const TIOCGWINSZ: u64 = 0x40087468;
+pub const TIOCGWINSZ: usize = 0x40087468;
 
 extern {
     pub fn tcgetattr(filedes: c_int, termptr: *mut Termios) -> c_int;