objstr: startswith(): Accept optional "start" arg.
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70328e419a
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c18ef2a9dd
16
py/objstr.c
16
py/objstr.c
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@ -606,13 +606,17 @@ STATIC mp_obj_t str_rindex(uint n_args, const mp_obj_t *args) {
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}
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// TODO: (Much) more variety in args
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STATIC mp_obj_t str_startswith(mp_obj_t self_in, mp_obj_t arg) {
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GET_STR_DATA_LEN(self_in, str, str_len);
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GET_STR_DATA_LEN(arg, prefix, prefix_len);
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if (prefix_len > str_len) {
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STATIC mp_obj_t str_startswith(uint n_args, const mp_obj_t *args) {
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GET_STR_DATA_LEN(args[0], str, str_len);
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GET_STR_DATA_LEN(args[1], prefix, prefix_len);
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uint index_val = 0;
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if (n_args > 2) {
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index_val = mp_get_index(&mp_type_str, str_len, args[2], true);
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}
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if (prefix_len + index_val > str_len) {
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return mp_const_false;
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}
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return MP_BOOL(memcmp(str, prefix, prefix_len) == 0);
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return MP_BOOL(memcmp(str + index_val, prefix, prefix_len) == 0);
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}
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enum { LSTRIP, RSTRIP, STRIP };
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@ -1536,7 +1540,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_rindex_obj, 2, 4, str_rindex);
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(str_join_obj, str_join);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_split_obj, 1, 3, str_split);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_rsplit_obj, 1, 3, str_rsplit);
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STATIC MP_DEFINE_CONST_FUN_OBJ_2(str_startswith_obj, str_startswith);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_startswith_obj, 2, 3, str_startswith);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_strip_obj, 1, 2, str_strip);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_lstrip_obj, 1, 2, str_lstrip);
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_rstrip_obj, 1, 2, str_rstrip);
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@ -3,3 +3,9 @@ print("foobar".startswith("Foo"))
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print("foobar".startswith("foo1"))
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print("foobar".startswith("foobar"))
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print("foobar".startswith(""))
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print("1foobar".startswith("foo", 1))
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print("1foo".startswith("foo", 1))
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print("1foo".startswith("1foo", 1))
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print("1fo".startswith("foo", 1))
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print("1fo".startswith("foo", 10))
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