From b485aab7e71c1625cfc27e0f92c9509f42378458 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 5 May 2024 13:19:16 +0200 Subject: Adding upstream version 1.45.3+dfsg. Signed-off-by: Daniel Baumann --- src/libnetdata/json/json.h | 80 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 src/libnetdata/json/json.h (limited to 'src/libnetdata/json/json.h') diff --git a/src/libnetdata/json/json.h b/src/libnetdata/json/json.h new file mode 100644 index 000000000..5c3459ede --- /dev/null +++ b/src/libnetdata/json/json.h @@ -0,0 +1,80 @@ +#ifndef CHECKIN_JSON_H +#define CHECKIN_JSON_H 1 + +#if ENABLE_JSONC +#include +// fix an older json-c bug +// https://github.com/json-c/json-c/issues/135 +#ifdef error_description +#undef error_description +#endif // error_description +#endif // ENABLE_JSONC + +#include "jsmn.h" + +//https://www.ibm.com/support/knowledgecenter/en/SS9H2Y_7.6.0/com.ibm.dp.doc/json_parserlimits.html +#define JSON_NAME_LEN 256 +#define JSON_FULLNAME_LEN 1024 + +typedef enum { + JSON_OBJECT = 0, + JSON_ARRAY = 1, + JSON_STRING = 2, + JSON_NUMBER = 3, + JSON_BOOLEAN = 4, + JSON_NULL = 5, +} JSON_ENTRY_TYPE; + +typedef struct json_entry { + JSON_ENTRY_TYPE type; + char name[JSON_NAME_LEN + 1]; + char fullname[JSON_FULLNAME_LEN + 1]; + union { + char *string; // type == JSON_STRING + NETDATA_DOUBLE number; // type == JSON_NUMBER + int boolean; // type == JSON_BOOLEAN + size_t items; // type == JSON_ARRAY + } data; + size_t pos; // the position of this item in its parent + + char *original_string; + + void *callback_data; + int (*callback_function)(struct json_entry *); +} JSON_ENTRY; + +// ---------------------------------------------------------------------------- +// public functions + +#define JSON_OK 0 +#define JSON_CANNOT_DOWNLOAD 1 +#define JSON_CANNOT_PARSE 2 + +int json_parse(char *js, void *callback_data, int (*callback_function)(JSON_ENTRY *)); + + +// ---------------------------------------------------------------------------- +// private functions + +#ifdef ENABLE_JSONC +json_object *json_tokenise(char *js); +size_t json_walk(json_object *t, void *callback_data, int (*callback_function)(struct json_entry *)); +#else +jsmntok_t *json_tokenise(char *js, size_t len, size_t *count); +size_t json_walk_tree(char *js, jsmntok_t *t, void *callback_data, int (*callback_function)(struct json_entry *)); +#endif + +size_t json_walk_object(char *js, jsmntok_t *t, size_t nest, size_t start, JSON_ENTRY *e); +size_t json_walk_array(char *js, jsmntok_t *t, size_t nest, size_t start, JSON_ENTRY *e); +size_t json_walk_string(char *js, jsmntok_t *t, size_t start, JSON_ENTRY *e); +size_t json_walk_primitive(char *js, jsmntok_t *t, size_t start, JSON_ENTRY *e); + +int json_callback_print(JSON_ENTRY *e); + +static inline void cleanup_json_object_pp(struct json_object **jobj) { + if(*jobj) + json_object_put(*jobj); +} +#define CLEAN_JSON_OBJECT _cleanup_(cleanup_json_object_pp) struct json_object + +#endif // CHECKIN_JSON_H -- cgit v1.2.3