1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 Copyright 2013 Lennart Poettering
10 #include "bus-signature.h"
13 static int signature_element_length_internal(
15 bool allow_dict_entry,
17 unsigned struct_depth,
27 if (bus_type_is_basic(*s) || *s == SD_BUS_TYPE_VARIANT) {
32 if (*s == SD_BUS_TYPE_ARRAY) {
35 if (array_depth >= 32)
38 r = signature_element_length_internal(s + 1, true, array_depth+1, struct_depth, &t);
46 if (*s == SD_BUS_TYPE_STRUCT_BEGIN) {
47 const char *p = s + 1;
49 if (struct_depth >= 32)
52 while (*p != SD_BUS_TYPE_STRUCT_END) {
55 r = signature_element_length_internal(p, false, array_depth, struct_depth+1, &t);
66 if (*s == SD_BUS_TYPE_DICT_ENTRY_BEGIN && allow_dict_entry) {
67 const char *p = s + 1;
70 if (struct_depth >= 32)
73 while (*p != SD_BUS_TYPE_DICT_ENTRY_END) {
76 if (n == 0 && !bus_type_is_basic(*p))
79 r = signature_element_length_internal(p, false, array_depth, struct_depth+1, &t);
97 int signature_element_length(const char *s, size_t *l) {
98 return signature_element_length_internal(s, true, 0, 0, l);
101 bool signature_is_single(const char *s, bool allow_dict_entry) {
108 r = signature_element_length_internal(s, allow_dict_entry, 0, 0, &t);
115 bool signature_is_pair(const char *s) {
120 if (!bus_type_is_basic(*s))
123 return signature_is_single(s + 1, false);
126 bool signature_is_valid(const char *s, bool allow_dict_entry) {
137 r = signature_element_length_internal(p, allow_dict_entry, 0, 0, &t);