add keymap for view and global

1 files changed, 78 insertions, 0 deletions

diff --git a/src/config/keymap/event_from_string.rs b/src/config/keymap/event_from_string.rs
new file mode 100644
index 0000000..00179c5
--- /dev/null
+++ b/src/config/keymap/event_from_string.rs
@@ -0,0 +1,78 @@
+use ratatui::crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
+
+fn parse_key_names(s: &str) -> Option<KeyCode> {
+    if s.chars().count() == 1 {
+        return Some(KeyCode::Char(s.chars().next().unwrap()));
+    }
+
+    match s {
+        "esc" => Some(KeyCode::Esc),
+        "up" => Some(KeyCode::Up),
+        "down" => Some(KeyCode::Down),
+        "left" => Some(KeyCode::Left),
+        "right" => Some(KeyCode::Right),
+        "backspace" => Some(KeyCode::Backspace),
+        "enter" => Some(KeyCode::Enter),
+        "home" => Some(KeyCode::Home),
+        "end" => Some(KeyCode::End),
+        "pageup" => Some(KeyCode::PageUp),
+        "pagedown" => Some(KeyCode::PageDown),
+        "tab" => Some(KeyCode::Tab),
+        "delete" => Some(KeyCode::Delete),
+        "insert" => Some(KeyCode::Insert),
+        "f1" => Some(KeyCode::F(1)),
+        "f2" => Some(KeyCode::F(2)),
+        "f3" => Some(KeyCode::F(3)),
+        "f4" => Some(KeyCode::F(4)),
+        "f5" => Some(KeyCode::F(5)),
+        "f6" => Some(KeyCode::F(6)),
+        "f7" => Some(KeyCode::F(7)),
+        "f8" => Some(KeyCode::F(8)),
+        "f9" => Some(KeyCode::F(9)),
+        "f10" => Some(KeyCode::F(10)),
+        "f11" => Some(KeyCode::F(11)),
+        "f12" => Some(KeyCode::F(12)),
+        "capslock" => Some(KeyCode::CapsLock),
+        "scrolllock" => Some(KeyCode::ScrollLock),
+        "numlock" => Some(KeyCode::NumLock),
+        "printscreen" => Some(KeyCode::PrintScreen),
+        "pause" => Some(KeyCode::Pause),
+        "menu" => Some(KeyCode::Menu),
+        "keypadbegin" => Some(KeyCode::KeypadBegin),
+        _ => None
+    }
+}
+
+pub fn event_from_string(s: String) -> Result<KeyEvent, String> {
+    let mut modifiers = KeyModifiers::NONE;
+    let s = s.to_lowercase();
+
+    let code = if s.chars().count() == 1 {
+        KeyCode::Char(s.chars().next().unwrap())
+    } else if s.starts_with('<') && s.ends_with('>') {
+        let mut inner = &s[1..s.len() - 1];
+
+        loop {
+            if inner.starts_with("c-") {
+                inner = &inner[2..];
+                modifiers |= KeyModifiers::CONTROL;
+            } else if inner.starts_with("a-") {
+                inner = &inner[2..];
+                modifiers |= KeyModifiers::ALT;
+            } else {
+                break;
+            }
+        }
+
+        match parse_key_names(inner) {
+            Some(keycode) => keycode,
+            None => return Err(format!("{:?} is not a valid keyname", inner))
+        }
+    } else {
+        return Err(format!("{:?} is not a valid keyname", s));
+    };
+
+    println!("{:?}", KeyEvent::new(code, modifiers));
+
+    Ok(KeyEvent::new(code, modifiers))
+}