Method is_provenance_graph

atomic-core/src/change/provenance_graph/mod.rs:347–349

Check whether a byte slice looks like a provenance graph file. Fast check — only inspects the 4-byte magic prefix.

(data: &[u8])

    ///
    /// Fast check — only inspects the 4-byte magic prefix.
    pub fn is_provenance_graph(data: &[u8]) -> bool {
        data.len() >= MAGIC.len() && &data[..4] == MAGIC
    }

    /// Number of nodes in the graph.
    pub fn node_count(&self) -> usize {