Merge pull request #91 from dunnock/wasi

Add elementary wasi support
a8m · Nov 21, 2019 · 6235728 · 6235728
2 parents a69a748 + ec58291
commit 6235728
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diff --git a/src/tty/mod.rs b/src/tty/mod.rs
@@ -17,6 +17,11 @@ mod unix;
 #[cfg(unix)]
 pub use self::unix::*;
 
+#[cfg(target_os="wasi")]
+mod wasi;
+#[cfg(target_os="wasi")]
+pub use self::wasi::*;
+
 #[cfg(windows)]
 mod windows;
 #[cfg(windows)]

diff --git a/src/tty/wasi.rs b/src/tty/wasi.rs
@@ -0,0 +1,16 @@
+extern crate libc;
+use super::{Width, Height};
+
+/// For WASI so far it will return none
+///
+/// For background https://github.com/WebAssembly/WASI/issues/42
+pub fn terminal_size() -> Option<(Width, Height)> {
+    return None;
+}
+
+/// This is inherited from unix and will work only when wasi executed on unix.
+/// 
+/// For background https://github.com/WebAssembly/WASI/issues/42
+pub fn move_cursor_up(n: usize) -> String {
+    format!("\x1B[{}A", n)
+}