chore: import upstream snapshot with attribution

2026-07-13 12:36:30 +08:00
commit 55ab4e4a73
473 changed files with 72932 additions and 0 deletions
@@ -0,0 +1,48 @@
+#include "utils.h"
+#include "../classes/graph.h"
+#include "../classes/linkgraph.h"
+
+py::object attr_to_dict(const node_attr_dict_factory& attr) {
+	py::dict attr_dict = py::dict();
+	for (const auto& kv : attr) {
+		attr_dict[py::cast(kv.first)] = kv.second;
+	}
+	return attr_dict;
+}
+
+std::string weight_to_string(py::object weight) {
+	py::object warn = py::module_::import("warnings").attr("warn");
+	if (!py::isinstance<py::str>(weight)) {
+		if (!weight.is_none()) {
+			warn(py::str(weight) + py::str(" would be transformed into an instance of str."));
+		}
+		weight = py::str(weight);
+	}
+	std::string weight_key = weight.cast<std::string>();
+	return weight_key;
+}
+
+py::object py_sum(py::object o) {
+	py::object sum = py::module_::import("builtins").attr("sum");
+	return sum(o);
+}
+
+Graph_L graph_to_linkgraph(Graph &G, bool if_directed, std::string weight_key, bool is_deg, bool is_reverse){
+    int node_num = G.node.size();
+    const std::vector<graph_edge>& edges = G._get_edges(if_directed);
+    int edges_num = edges.size();
+    Graph_L G_l(node_num, if_directed, is_deg);
+	for(int i = 0; i < edges_num; i++){
+			graph_edge e = edges[i];
+			edge_attr_dict_factory& edge_attr = e.attr;
+			weight_t edge_weight = edge_attr.find(weight_key) != edge_attr.end() ? edge_attr[weight_key] : 1;
+			if(is_reverse){
+				std::swap(e.u, e.v);
+			}
+			G_l.add_weighted_edge(e.u, e.v, edge_weight);
+			if (!if_directed){
+				G_l.add_weighted_edge(e.v, e.u, edge_weight);
+			}
+	}
+    return G_l;
+}