Add argv_array_detach and argv_array_free_detached

diff --git a/argv-array.c b/argv-array.c
index 0b5f8898a10f16df8a6273f8960f05b670ba94bc..aab50d6a97c7ca76e38601c3e2438e760322f478 100644 (file)
--- a/argv-array.c
+++ b/argv-array.c
@@ -59,3 +59,23 @@ void argv_array_clear(struct argv_array *array)
        }
        argv_array_init(array);
 }
+
+const char **argv_array_detach(struct argv_array *array, int *argc)
+{
+       const char **argv =
+               array->argv == empty_argv || array->argc == 0 ? NULL : array->argv;
+       if (argc)
+               *argc = array->argc;
+       argv_array_init(array);
+       return argv;
+}
+
+void argv_array_free_detached(const char **argv)
+{
+       if (argv) {
+               int i;
+               for (i = 0; argv[i]; i++)
+                       free((char **)argv[i]);
+               free(argv);
+       }
+}