1 files changed, 45 insertions, 0 deletions
diff --git a/src/input.rs b/src/input.rs
new file mode 100644
index 0000000..5ffaec8
--- /dev/null
+++ b/src/input.rs
@@ -0,0 +1,45 @@
+use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
+
+use crate::{Calculator, Operator, Signal};
+
+impl Calculator {
+    pub fn handle_input(&mut self, key: KeyEvent) -> Signal {
+        match key.modifiers {
+            KeyModifiers::CONTROL => match key.code {
+                KeyCode::Char('c') => {
+                    return Signal::Exit;
+                }
+                _ => {}
+            },
+            KeyModifiers::NONE => match key.code {
+                KeyCode::Char('q') => {
+                    return Signal::Exit;
+                }
+                KeyCode::Char(c) => {
+                    if c.is_ascii_digit() {
+                        self.input_buffer.push(c);
+                    } else if c == '.' && !self.input_buffer.contains('.') {
+                        if self.input_buffer.len() == 0 {
+                            self.input_buffer.push('0');
+                        }
+                        self.input_buffer.push(c);
+                    } else if let Ok(op) = Operator::parse(c) {
+                        if self.input_buffer.len() > 0 {
+                            self.push_buffer_to_stack();
+                        }
+                        self.perform_operation(op);
+                    }
+                }
+                KeyCode::Enter if self.input_buffer.len() > 0 => {
+                    self.push_buffer_to_stack();
+                }
+                KeyCode::Backspace => {
+                    self.input_buffer.pop();
+                }
+                _ => {}
+            },
+            _ => {}
+        }
+        return Signal::None;
+    }
+}