fix: switch to crossterm for cross platform compatibility

cmd/soroban-cli/Cargo.toml

@@ -112,10 +112,10 @@ ureq = { version = "2.9.1", features = ["json"] }
 tempfile = "3.8.1"
 toml_edit = "0.21.0"
 rust-embed = { version = "8.2.0", features = ["debug-embed"] }
-bollard = { workspace=true }
+bollard = { workspace = true }
 futures-util = "0.3.30"
 home = "0.5.9"
-termion = "4.0.0"
+crossterm = "0.27.0"
 # For hyper-tls
 [target.'cfg(unix)'.dependencies]
 openssl = { version = "=0.10.55", features = ["vendored"] }

cmd/soroban-cli/src/signer.rs

@@ -1,6 +1,6 @@
+use crossterm::event::{read, Event, KeyCode};
 use ed25519_dalek::ed25519::signature::Signer;
 use sha2::{Digest, Sha256};
-use termion::{event::Key, get_tty, input::TermRead};
 
 use crate::xdr::{
     self, AccountId, DecoratedSignature, Hash, HashIdPreimage, HashIdPreimageSorobanAuthorization,
@@ -246,13 +246,13 @@ impl Stellar for LocalKey {
 }
 
 pub fn read_key() -> char {
-    let tty = get_tty().unwrap();
-    if let Some(key) = tty.keys().next() {
-        match key.unwrap() {
-            Key::Char(c) => c,
-            _ => '_',
+    loop {
+        if let Event::Key(key) = read().unwrap() {
+            match key.code {
+                KeyCode::Char(c) => return c,
+                KeyCode::Esc => return '\x1b', // escape key
+                _ => (),
+            }
         }
-    } else {
-        ' '
     }
 }