add eina_graph_dot_write()

1 files changed, 25 insertions, 0 deletions

diff --git a/src/lib/eina_graph.c b/src/lib/eina_graph.c
index 4cea67f..e3bf209 100644
--- a/src/lib/eina_graph.c
+++ b/src/lib/eina_graph.c
@@ -159,3 +159,28 @@ eina_graph_edge_add(Eina_Graph *g, unsigned int v, unsigned int w)
 
    return EINA_TRUE;
 }
+
+EAPI void
+eina_graph_dot_write(Eina_Graph *g, FILE *f)
+{
+   int r;
+   char buf[32];
+   unsigned int i, j, n;
+   Eina_Array *ar;
+   _Eina_Graph * _g = (_Eina_Graph *) g;
+
+   fwrite("digraph {\n", 10, 1, f);
+
+   for (i = 0; i< _g->vertices; i++)
+     {
+        ar = _g->adjs[i];
+        n = eina_array_count_get(ar);
+        for (j = 0; j < n; j++)
+          {
+             r = snprintf(buf, 32, "%u -> %u;\n", i, eina_array_uint_nth_get(ar, j));
+             fwrite(buf, r, 1, f);
+          }
+     }
+
+   fwrite("}\n", 2, 1, f);
+}