Function cursor_to_content

src/text_input.rs:2356–2398

Convert a "structural visual" position (includes } and empty content markers) to a "content position" (just visible chars, matching strip_styling output). Content position is clamped to stripped text length.

(raw: &str, cursor_pos: usize)

    /// to a "content position" (just visible chars, matching strip_styling output).
    /// Content position is clamped to stripped text length.
    pub fn cursor_to_content(raw: &str, cursor_pos: usize) -> usize {
        let chars: Vec<char> = raw.chars().collect();
        let len = chars.len();
        let mut visual = 0usize;
        let mut content = 0usize;
        let mut escaped = false;
        let mut in_style_def = false;

        for i in 0..len {
            if visual >= cursor_pos {
                break;
            }
            let c = chars[i];

            if escaped {
                visual += 1;
                content += 1;
                escaped = false;
                continue;
            }

            match c {
                '\\' => { escaped = true; }
                '{' if !in_style_def => { in_style_def = true; }
                '|' if in_style_def => {
                    in_style_def = false;
                    if i + 1 < len && chars[i + 1] == '}' {
                        visual += 1; // empty content position (not a real content char)
                    }
                }
                '}' if !in_style_def => {
                    visual += 1; // } position (not a real content char)
                }
                _ if in_style_def => {}
                _ => {
                    visual += 1;
                    content += 1;
                }
            }
        }

        content
    }

    /// Convert a "content position" (from strip_styling output) back to a
    /// "structural visual" position (includes } and empty content markers).