| 1 | #ifndef __JSON__H |
| 2 | #define __JSON__H |
| 3 | |
| 4 | #include "lib/output_buffer.h" |
| 5 | |
| 6 | #define JSON_TYPE_STRING 0 |
| 7 | #define JSON_TYPE_INTEGER 1 |
| 8 | #define JSON_TYPE_FLOAT 2 |
| 9 | #define JSON_TYPE_OBJECT 3 |
| 10 | #define JSON_TYPE_ARRAY 4 |
| 11 | #define JSON_PARENT_TYPE_PAIR 0 |
| 12 | #define JSON_PARENT_TYPE_ARRAY 1 |
| 13 | struct json_value { |
| 14 | int type; |
| 15 | union { |
| 16 | long long integer_number; |
| 17 | double float_number; |
| 18 | char *string; |
| 19 | struct json_object *object; |
| 20 | struct json_array *array; |
| 21 | }; |
| 22 | int parent_type; |
| 23 | union { |
| 24 | struct json_pair *parent_pair; |
| 25 | struct json_array *parent_array; |
| 26 | }; |
| 27 | }; |
| 28 | |
| 29 | struct json_array { |
| 30 | struct json_value **values; |
| 31 | int value_cnt; |
| 32 | struct json_value *parent; |
| 33 | }; |
| 34 | |
| 35 | struct json_object { |
| 36 | struct json_pair **pairs; |
| 37 | int pair_cnt; |
| 38 | struct json_value *parent; |
| 39 | }; |
| 40 | |
| 41 | struct json_pair { |
| 42 | char *name; |
| 43 | struct json_value *value; |
| 44 | struct json_object *parent; |
| 45 | }; |
| 46 | |
| 47 | struct json_object *json_create_object(void); |
| 48 | struct json_array *json_create_array(void); |
| 49 | |
| 50 | void json_free_object(struct json_object *obj); |
| 51 | |
| 52 | int json_object_add_value_type(struct json_object *obj, const char *name, |
| 53 | const struct json_value *val); |
| 54 | |
| 55 | static inline int json_object_add_value_int(struct json_object *obj, |
| 56 | const char *name, long long val) |
| 57 | { |
| 58 | struct json_value arg = { |
| 59 | .type = JSON_TYPE_INTEGER, |
| 60 | }; |
| 61 | |
| 62 | arg.integer_number = val; |
| 63 | return json_object_add_value_type(obj, name, &arg); |
| 64 | } |
| 65 | |
| 66 | static inline int json_object_add_value_float(struct json_object *obj, |
| 67 | const char *name, double val) |
| 68 | { |
| 69 | struct json_value arg = { |
| 70 | .type = JSON_TYPE_FLOAT, |
| 71 | }; |
| 72 | |
| 73 | arg.float_number = val; |
| 74 | return json_object_add_value_type(obj, name, &arg); |
| 75 | } |
| 76 | |
| 77 | static inline int json_object_add_value_string(struct json_object *obj, |
| 78 | const char *name, |
| 79 | const char *val) |
| 80 | { |
| 81 | struct json_value arg = { |
| 82 | .type = JSON_TYPE_STRING, |
| 83 | }; |
| 84 | union { |
| 85 | const char *a; |
| 86 | char *b; |
| 87 | } string; |
| 88 | |
| 89 | string.a = val ? val : ""; |
| 90 | arg.string = string.b; |
| 91 | return json_object_add_value_type(obj, name, &arg); |
| 92 | } |
| 93 | |
| 94 | static inline int json_object_add_value_object(struct json_object *obj, |
| 95 | const char *name, |
| 96 | struct json_object *val) |
| 97 | { |
| 98 | struct json_value arg = { |
| 99 | .type = JSON_TYPE_OBJECT, |
| 100 | }; |
| 101 | |
| 102 | arg.object = val; |
| 103 | return json_object_add_value_type(obj, name, &arg); |
| 104 | } |
| 105 | |
| 106 | static inline int json_object_add_value_array(struct json_object *obj, |
| 107 | const char *name, |
| 108 | struct json_array *val) |
| 109 | { |
| 110 | struct json_value arg = { |
| 111 | .type = JSON_TYPE_ARRAY, |
| 112 | }; |
| 113 | |
| 114 | arg.array = val; |
| 115 | return json_object_add_value_type(obj, name, &arg); |
| 116 | } |
| 117 | |
| 118 | int json_array_add_value_type(struct json_array *array, |
| 119 | const struct json_value *val); |
| 120 | |
| 121 | static inline int json_array_add_value_int(struct json_array *obj, |
| 122 | long long val) |
| 123 | { |
| 124 | struct json_value arg = { |
| 125 | .type = JSON_TYPE_INTEGER, |
| 126 | }; |
| 127 | |
| 128 | arg.integer_number = val; |
| 129 | return json_array_add_value_type(obj, &arg); |
| 130 | } |
| 131 | |
| 132 | static inline int json_array_add_value_float(struct json_array *obj, |
| 133 | double val) |
| 134 | { |
| 135 | struct json_value arg = { |
| 136 | .type = JSON_TYPE_FLOAT, |
| 137 | }; |
| 138 | |
| 139 | arg.float_number = val; |
| 140 | return json_array_add_value_type(obj, &arg); |
| 141 | } |
| 142 | |
| 143 | static inline int json_array_add_value_string(struct json_array *obj, |
| 144 | const char *val) |
| 145 | { |
| 146 | struct json_value arg = { |
| 147 | .type = JSON_TYPE_STRING, |
| 148 | }; |
| 149 | |
| 150 | arg.string = (char *)val; |
| 151 | return json_array_add_value_type(obj, &arg); |
| 152 | } |
| 153 | |
| 154 | static inline int json_array_add_value_object(struct json_array *obj, |
| 155 | struct json_object *val) |
| 156 | { |
| 157 | struct json_value arg = { |
| 158 | .type = JSON_TYPE_OBJECT, |
| 159 | }; |
| 160 | |
| 161 | arg.object = val; |
| 162 | return json_array_add_value_type(obj, &arg); |
| 163 | } |
| 164 | |
| 165 | static inline int json_array_add_value_array(struct json_array *obj, |
| 166 | struct json_array *val) |
| 167 | { |
| 168 | struct json_value arg = { |
| 169 | .type = JSON_TYPE_ARRAY, |
| 170 | }; |
| 171 | |
| 172 | arg.array = val; |
| 173 | return json_array_add_value_type(obj, &arg); |
| 174 | } |
| 175 | |
| 176 | #define json_array_last_value_object(obj) \ |
| 177 | (obj->values[obj->value_cnt - 1]->object) |
| 178 | |
| 179 | void json_print_object(struct json_object *obj, struct buf_output *out); |
| 180 | #endif |