| json-c
    0.13.1
    | 
Miscllaneous utility functions and macros. More...
| Macros | |
| #define | json_min(a, b) ((a) < (b) ? (a) : (b)) | 
| #define | json_max(a, b) ((a) > (b) ? (a) : (b)) | 
| #define | JSON_FILE_BUF_SIZE 4096 | 
| Functions | |
| struct json_object * | json_object_from_file (const char *filename) | 
| struct json_object * | json_object_from_fd (int fd) | 
| int | json_object_to_file (const char *filename, struct json_object *obj) | 
| int | json_object_to_file_ext (const char *filename, struct json_object *obj, int flags) | 
| int | json_object_to_fd (int fd, struct json_object *obj, int flags) | 
| const char * | json_util_get_last_err (void) | 
| int | json_parse_int64 (const char *buf, int64_t *retval) | 
| int | json_parse_double (const char *buf, double *retval) | 
| const char * | json_type_to_name (enum json_type o_type) | 
Miscllaneous utility functions and macros.
| #define JSON_FILE_BUF_SIZE 4096 | 
| #define json_max | ( | a, | |
| b | |||
| ) | ((a) > (b) ? (a) : (b)) | 
| #define json_min | ( | a, | |
| b | |||
| ) | ((a) < (b) ? (a) : (b)) | 
| struct json_object* json_object_from_fd | ( | int | fd | ) | 
Create a JSON object from already opened file descriptor.
This function can be helpful, when you opened the file already, e.g. when you have a temp file. Note, that the fd must be readable at the actual position, i.e. use lseek(fd, 0, SEEK_SET) before.
Returns -1 if something fails. See json_util_get_last_err() for details.
| struct json_object* json_object_from_file | ( | const char * | filename | ) | 
Read the full contents of the given file, then convert it to a json_object using json_tokener_parse().
Returns -1 if something fails. See json_util_get_last_err() for details.
| int json_object_to_fd | ( | int | fd, | 
| struct json_object * | obj, | ||
| int | flags | ||
| ) | 
Convert the json_object to a string and write it to the file descriptor. Handles partial writes and will keep writing until done, or an error occurs.
| fd | an open, writable file descriptor to write to | 
| obj | the object to serializer and write | 
| flags | flags to pass to json_object_to_json_string_ext() | 
| int json_object_to_file | ( | const char * | filename, | 
| struct json_object * | obj | ||
| ) | 
Equivalent to: json_object_to_file_ext(filename, obj, JSON_C_TO_STRING_PLAIN);
Returns -1 if something fails. See json_util_get_last_err() for details.
| int json_object_to_file_ext | ( | const char * | filename, | 
| struct json_object * | obj, | ||
| int | flags | ||
| ) | 
Open and truncate the given file, creating it if necessary, then convert the json_object to a string and write it to the file.
Returns -1 if something fails. See json_util_get_last_err() for details.
| int json_parse_double | ( | const char * | buf, | 
| double * | retval | ||
| ) | 
| int json_parse_int64 | ( | const char * | buf, | 
| int64_t * | retval | ||
| ) | 
| const char* json_type_to_name | ( | enum json_type | o_type | ) | 
Return a string describing the type of the object. e.g. "int", or "object", etc...
| const char* json_util_get_last_err | ( | void | ) | 
Return the last error from various json-c functions, including: json_object_to_file{,ext}, json_object_to_fd() or json_object_from{file,fd}, or NULL if there is none.
 1.8.8
 1.8.8