fix: forward pane terminal bells (#2498)

refs #2453

Co-authored-by: akbash-bot <300245827+akbash-bot@users.noreply.github.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/src/terminal_effects.rs b/src/terminal_effects.rs
new file mode 100644
index 00000000..88fcf55f
--- /dev/null
+++ b/src/terminal_effects.rs
@@ -0,0 +1,27 @@
+use std::io::{self, Write};
+
+const BELL_CHUNK: [u8; 64] = [b'\x07'; 64];
+
+pub(crate) fn write_terminal_bells<W: Write>(writer: &mut W, count: u16) -> io::Result<()> {
+    let full_chunks = usize::from(count) / BELL_CHUNK.len();
+    let remainder = usize::from(count) % BELL_CHUNK.len();
+    for _ in 0..full_chunks {
+        writer.write_all(&BELL_CHUNK)?;
+    }
+    writer.write_all(&BELL_CHUNK[..remainder])?;
+    writer.flush()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn writes_exact_terminal_bell_count() {
+        let mut output = Vec::new();
+
+        write_terminal_bells(&mut output, 130).unwrap();
+
+        assert_eq!(output, vec![b'\x07'; 130]);
+    }
+}