argv_array: offer to split a string by whitespace

diff --git a/argv-array.c b/argv-array.c
index eaed47712b44ed1a5f9e5d35d356d0de4a5a4d54..cb5bcd2c064961919d965cb2cae79de653162fde 100644 (file)
--- a/argv-array.c
+++ b/argv-array.c
@@ -64,6 +64,26 @@ void argv_array_pop(struct argv_array *array)
        array->argc--;
 }
 
+void argv_array_split(struct argv_array *array, const char *to_split)
+{
+       while (isspace(*to_split))
+               to_split++;
+       for (;;) {
+               const char *p = to_split;
+
+               if (!*p)
+                       break;
+
+               while (*p && !isspace(*p))
+                       p++;
+               argv_array_push_nodup(array, xstrndup(to_split, p - to_split));
+
+               while (isspace(*p))
+                       p++;
+               to_split = p;
+       }
+}
+
 void argv_array_clear(struct argv_array *array)
 {
        if (array->argv != empty_argv) {
@@ -74,3 +94,14 @@ void argv_array_clear(struct argv_array *array)
        }
        argv_array_init(array);
 }
+
+const char **argv_array_detach(struct argv_array *array)
+{
+       if (array->argv == empty_argv)
+               return xcalloc(1, sizeof(const char *));
+       else {
+               const char **ret = array->argv;
+               argv_array_init(array);
+               return ret;
+       }
+}