Function extract_open_think

cake-cli/src/chat.rs:277–296

Extract the text inside an open (unclosed) ` ` block, if any. Returns empty string if there's no open think block.

(content: &str)

/// Extract the text inside an open (unclosed) `<think>` block, if any.
/// Returns empty string if there's no open think block.
fn extract_open_think(content: &str) -> String {
    let mut rest = content;
    loop {
        match rest.find("<think>") {
            Some(pos) => {
                rest = &rest[pos + 7..];
                match rest.find("</think>") {
                    Some(end) => {
                        rest = &rest[end + 8..];
                    }
                    None => {
                        // This is the open block
                        return rest.trim().to_string();
                    }
                }
            }
            None => return String::new(),
        }
    }
}

/// Remove all `<think>...</think>` blocks (closed) and any trailing open
/// `<think>...` (still thinking) from the displayed content.