Add support for using Ctrl/Alt/Meta with non-character keys

kkawakam · Jul 15, 2017 · af33c05 · af33c05
1 parent ec773db
commit af33c05
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Showing 4 changed files with 224 additions and 201 deletions.
diff --git a/src/consts.rs b/src/consts.rs
@@ -1,68 +1,73 @@
-
 #[derive(Debug, Clone, PartialEq, Copy)]
-pub enum KeyPress {
-    UnknownEscSeq,
+pub enum Key {
     Backspace,
     Char(char),
-    Ctrl(char),
     Delete,
     Down,
     End,
-    Enter, // Ctrl('M')
+    Enter,
     Esc,
     Home,
     Left,
-    Meta(char),
-    Null,
     PageDown,
     PageUp,
     Right,
-    Tab, // Ctrl('I')
+    Tab,
     Up,
 }
 
+#[derive(Debug, Clone, PartialEq, Copy)]
+pub enum KeyPress {
+    Alt(Key),
+    Ctrl(Key),
+    Key(Key),
+    Meta(Key),
+    Null,
+    UnknownEscSeq,
+}
+
 #[allow(match_same_arms)]
 pub fn char_to_key_press(c: char) -> KeyPress {
     if !c.is_control() {
-        return KeyPress::Char(c);
+        return KeyPress::Key(Key::Char(c));
     }
     match c {
         '\x00' => KeyPress::Null,
-        '\x01' => KeyPress::Ctrl('A'),
-        '\x02' => KeyPress::Ctrl('B'),
-        '\x03' => KeyPress::Ctrl('C'),
-        '\x04' => KeyPress::Ctrl('D'),
-        '\x05' => KeyPress::Ctrl('E'),
-        '\x06' => KeyPress::Ctrl('F'),
-        '\x07' => KeyPress::Ctrl('G'),
-        '\x08' => KeyPress::Backspace, // '\b'
-        '\x09' => KeyPress::Tab,
-        '\x0a' => KeyPress::Ctrl('J'), // '\n' (10)
-        '\x0b' => KeyPress::Ctrl('K'),
-        '\x0c' => KeyPress::Ctrl('L'),
-        '\x0d' => KeyPress::Enter, // '\r' (13)
-        '\x0e' => KeyPress::Ctrl('N'),
-        '\x10' => KeyPress::Ctrl('P'),
-        '\x12' => KeyPress::Ctrl('R'),
-        '\x13' => KeyPress::Ctrl('S'),
-        '\x14' => KeyPress::Ctrl('T'),
-        '\x15' => KeyPress::Ctrl('U'),
-        '\x16' => KeyPress::Ctrl('V'),
-        '\x17' => KeyPress::Ctrl('W'),
-        '\x19' => KeyPress::Ctrl('Y'),
-        '\x1a' => KeyPress::Ctrl('Z'),
-        '\x1b' => KeyPress::Esc,
-        '\x7f' => KeyPress::Backspace, // TODO Validate
+        '\x01' => KeyPress::Ctrl(Key::Char('A')),
+        '\x02' => KeyPress::Ctrl(Key::Char('B')),
+        '\x03' => KeyPress::Ctrl(Key::Char('C')),
+        '\x04' => KeyPress::Ctrl(Key::Char('D')),
+        '\x05' => KeyPress::Ctrl(Key::Char('E')),
+        '\x06' => KeyPress::Ctrl(Key::Char('F')),
+        '\x07' => KeyPress::Ctrl(Key::Char('G')),
+        '\x08' => KeyPress::Key(Key::Backspace),
+        '\x09' => KeyPress::Key(Key::Tab),
+        '\x0a' => KeyPress::Ctrl(Key::Char('J')),
+        '\x0b' => KeyPress::Ctrl(Key::Char('K')),
+        '\x0c' => KeyPress::Ctrl(Key::Char('L')),
+        '\x0d' => KeyPress::Key(Key::Enter),
+        '\x0e' => KeyPress::Ctrl(Key::Char('N')),
+        '\x10' => KeyPress::Ctrl(Key::Char('P')),
+        '\x12' => KeyPress::Ctrl(Key::Char('R')),
+        '\x13' => KeyPress::Ctrl(Key::Char('S')),
+        '\x14' => KeyPress::Ctrl(Key::Char('T')),
+        '\x15' => KeyPress::Ctrl(Key::Char('U')),
+        '\x16' => KeyPress::Ctrl(Key::Char('V')),
+        '\x17' => KeyPress::Ctrl(Key::Char('W')),
+        '\x19' => KeyPress::Ctrl(Key::Char('Y')),
+        '\x1a' => KeyPress::Ctrl(Key::Char('Z')),
+        '\x1b' => KeyPress::Key(Key::Esc),
+        '\x7f' => KeyPress::Key(Key::Backspace),
         _ => KeyPress::Null,
     }
 }
 
 #[cfg(test)]
 mod tests {
-    use super::{char_to_key_press, KeyPress};
+    use super::{char_to_key_press, Key, KeyPress};
 
     #[test]
     fn char_to_key() {
-        assert_eq!(KeyPress::Esc, char_to_key_press('\x1b'));
+        assert_eq!(KeyPress::Key(Key::Esc), char_to_key_press('\x1b'));
     }
 }