rename all crates

crates/pacdef_core/src/ui.rs

@@ -0,0 +1,42 @@
+use std::io::{self, Read, Write};
+
+use anyhow::{Context, Result};
+use termios::*;
+
+pub fn get_user_confirmation() -> Result<bool> {
+    print!("Continue? [Y/n] ");
+    std::io::stdout().flush().context("flushing stdout")?;
+
+    let mut reply = String::new();
+    std::io::stdin()
+        .read_line(&mut reply)
+        .context("reading stdin")?;
+
+    Ok(reply.trim().is_empty() || reply.to_lowercase().contains('y'))
+}
+
+pub fn read_single_char_from_terminal() -> Result<char> {
+    // 0 is the file descriptor for stdin
+    let fd = 0;
+    let termios = Termios::from_fd(fd).context("getting stdin fd")?;
+    let mut new_termios = termios;
+    new_termios.c_lflag &= !(ICANON | ECHO);
+    new_termios.c_cc[VMIN] = 1;
+    new_termios.c_cc[VTIME] = 0;
+    tcsetattr(fd, TCSANOW, &new_termios).context("setting terminal mode")?;
+
+    let mut input = [0u8; 1];
+    io::stdin()
+        .read_exact(&mut input[..])
+        .context("reading one byte from stdin")?;
+    let result: char = input[0]
+        .try_into()
+        .context("reading a single byte from stdin")?;
+    // stdin is not echoed automatically in this terminal mode
+    println!("{result}");
+
+    // restore previous settings
+    tcsetattr(fd, TCSANOW, &termios).context("restoring terminal mode")?;
+
+    Ok(result)
+}