utils / helpers¶
Header: json/util.h
Inline helpers to make things easier while process JSON. Most of uitl functions expects default value, so if it fails to convert string to a number or boolean then that default value will be returned.
Table of contents (click to go):¶
Functions:
Functions documentation¶
-
int32_t
json_int32
(const json_t * __restrict object, int32_t defaultValue)¶ - creates number (int32) from string value
- Parameters:
- [in] object json object[in] defaultValue default value if operation fails
- Returns:
- number
-
uint32_t
json_uint32
(const json_t * __restrict object, uint32_t defaultValue)¶ - creates number (uint32) from string value
- Parameters:
- [in] object json object[in] defaultValue default value if operation fails
- Returns:
- number
-
int64_t
json_int64
(const json_t * __restrict object, int64_t defaultValue)¶ - creates number (int64) from string value
- Parameters:
- [in] object json object[in] defaultValue default value if operation fails
- Returns:
- number
-
int64_t
json_uint64
(const json_t * __restrict object, uint64_t defaultValue)¶ - creates number (uint64) from string value
- Parameters:
- [in] object json object[in] defaultValue default value if operation fails
- Returns:
- number
-
float
json_float
(const json_t * __restrict object, float defaultValue)¶ - creates number (float) from string value
- Parameters:
- [in] object json object[in] defaultValue default value if operation fails
- Returns:
- number
-
double
json_double
(const json_t * __restrict object, double defaultValue)¶ - creates number (double) from string value
- Parameters:
- [in] object json object[in] defaultValue default value if operation fails
- Returns:
- number
-
int
json_bool
(const json_t * __restrict object, int defaultValue)¶ - creates boolean from string valueit returns integer to separate default value from true or false
- Parameters:
- [in] object json object[in] defaultValue default value if operation fails
- Returns:
- boolean values as integer: 1 true, 0 false, error: defaultValue
-
const char*
json_string
(const json_t * __restrict object)¶ - return non-NULL terminated string valueyou must use object->valSize to copy, compare … string
- Parameters:
- [in] object json object
- Returns:
- non-NULL terminated string value (pointer only)
-
char*
json_string_dup
(const json_t * __restrict object)¶ - return non-NULL terminated string valueyou must use object->valSize to copy, compare … string
- Parameters:
- [in] object json object
- Returns:
- NULL terminated duplicated string value
-
bool
json_key_eq
(const json_t * __restrict obj, const char * __restrict str)¶ - compares json key with a string|
- Parameters:
- [in] obj json object[in] str string to compare
- Returns:
- true if str is equals to json’s key