1 files changed, 35 insertions, 0 deletions
diff --git a/src/hex.rs b/src/hex.rs
new file mode 100644
index 0000000..6dfbe7f
--- /dev/null
+++ b/src/hex.rs
@@ -0,0 +1,35 @@
+use std::{fs, io};
+use std::io::stdout;
+use ratatui::{backend::CrosstermBackend, Terminal};
+use crossterm::{execute, terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen}};
+use crate::{input, render};
+
+pub struct HexEditor {
+    filename: String,
+    data: Vec<u8>,
+    cursor: usize,
+    terminal: Terminal<CrosstermBackend<std::io::Stdout>>,
+}
+
+impl HexEditor {
+    pub fn new(filename: String, data: Vec<u8>) -> io::Result<Self> {
+        enable_raw_mode()?;
+        execute!(stdout(), EnterAlternateScreen)?;
+        let terminal = Terminal::new(CrosstermBackend::new(stdout()))?;
+        Ok(Self { filename, data, cursor: 0, terminal })
+    }
+
+    pub fn run(&mut self) -> io::Result<()> {
+        while input::handle_input(&mut self.cursor, &mut self.data[..])? {
+            render::draw(&mut self.terminal, &self.data, self.cursor, &self.filename)?;
+        }
+        self.cleanup()
+    }
+
+    pub fn cleanup(&mut self) -> io::Result<()> {
+        disable_raw_mode()?;
+        execute!(stdout(), LeaveAlternateScreen)?;
+        fs::write(&self.filename, &self.data)?;
+        Ok(())
+    }
+}