wip build time sort

src/createrepo_c.c

@@ -578,6 +578,22 @@ static int strlensort(gconstpointer a, gconstpointer b)
     }
 }
 
+// Sorting function for DuplicateLocation pointers, by pkg build time.
+// Compatible with g_array_sort()
+static int buildtimesort(gconstpointer a, gconstpointer b)
+{
+    // Function is supposed to take a double-pointer so unfortunately you cannot pass a
+    // string-comparison function directly.
+    struct DuplicateLocation *a_loc = (struct DuplicateLocation *)a;
+    struct DuplicateLocation *b_loc = (struct DuplicateLocation *)b;
+
+    assert(a_loc->pkg->time_build != 0);
+    assert(b_loc->pkg->time_build != 0);
+
+    int64_t result = a_loc->pkg->time_build - b_loc->pkg->time_build;
+    return result;
+}
+
 
 int
 handle_nevra_duplicates(GArray *locations, CmdDupNevra option)
@@ -1386,7 +1402,7 @@ main(int argc, char **argv)
         if (locations->len > 1) {
             g_warning("Package '%s' has duplicate metadata entries, only one should exist", nevra);
 
-            g_array_sort(locations, strlensort);
+            g_array_sort(locations, buildtimesort);
             skipped_pkgs += handle_nevra_duplicates(locations, cmd_options->nevra_duplicates);
         }