merman-render 0.5.0

Headless layout + SVG renderer for Mermaid (parity-focused; upstream SVG goldens).
Documentation 
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// Style parsing helpers (split from parity.rs).

pub(super) fn parse_style_decl(s: &str) -> Option<(&str, &str)> {
    let s = s.trim().trim_end_matches(';').trim();
    if s.is_empty() {
        return None;
    }
    let (k, v) = s.split_once(':')?;
    let k = k.trim();
    let v = v.trim();
    if k.is_empty() || v.is_empty() {
        return None;
    }
    Some((k, v))
}

pub(super) fn is_rect_style_key(key: &str) -> bool {
    matches!(
        key,
        "fill"
            | "stroke"
            | "stroke-width"
            | "stroke-dasharray"
            | "opacity"
            | "fill-opacity"
            | "stroke-opacity"
    )
}

pub(super) fn is_text_style_key(key: &str) -> bool {
    matches!(
        key,
        "color" | "font-family" | "font-size" | "font-weight" | "opacity"
    )
}