| /* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */ |
| /* |
| * Simple streaming JSON writer |
| * |
| * This takes care of the annoying bits of JSON syntax like the commas |
| * after elements |
| * |
| * Authors: Stephen Hemminger <stephen@networkplumber.org> |
| */ |
| |
| #ifndef _JSON_WRITER_H_ |
| #define _JSON_WRITER_H_ |
| |
| #include <stdbool.h> |
| #include <stdint.h> |
| |
| /* Opaque class structure */ |
| typedef struct json_writer json_writer_t; |
| |
| /* Create a new JSON stream */ |
| json_writer_t *jsonw_new(FILE *f); |
| /* End output to JSON stream */ |
| void jsonw_destroy(json_writer_t **self_p); |
| |
| /* Cause output to have pretty whitespace */ |
| void jsonw_pretty(json_writer_t *self, bool on); |
| |
| /* Add property name */ |
| void jsonw_name(json_writer_t *self, const char *name); |
| |
| /* Add value */ |
| __attribute__((format(printf, 2, 3))) |
| void jsonw_printf(json_writer_t *self, const char *fmt, ...); |
| void jsonw_string(json_writer_t *self, const char *value); |
| void jsonw_bool(json_writer_t *self, bool value); |
| void jsonw_float(json_writer_t *self, double number); |
| void jsonw_float_fmt(json_writer_t *self, const char *fmt, double num); |
| void jsonw_uint(json_writer_t *self, unsigned int number); |
| void jsonw_u64(json_writer_t *self, uint64_t number); |
| void jsonw_xint(json_writer_t *self, uint64_t number); |
| void jsonw_hhu(json_writer_t *self, unsigned char num); |
| void jsonw_hu(json_writer_t *self, unsigned short number); |
| void jsonw_int(json_writer_t *self, int number); |
| void jsonw_s64(json_writer_t *self, int64_t number); |
| void jsonw_null(json_writer_t *self); |
| void jsonw_luint(json_writer_t *self, unsigned long num); |
| void jsonw_lluint(json_writer_t *self, unsigned long long num); |
| |
| /* Useful Combinations of name and value */ |
| void jsonw_string_field(json_writer_t *self, const char *prop, const char *val); |
| void jsonw_bool_field(json_writer_t *self, const char *prop, bool value); |
| void jsonw_float_field(json_writer_t *self, const char *prop, double num); |
| void jsonw_uint_field(json_writer_t *self, const char *prop, unsigned int num); |
| void jsonw_u64_field(json_writer_t *self, const char *prop, uint64_t num); |
| void jsonw_xint_field(json_writer_t *self, const char *prop, uint64_t num); |
| void jsonw_hhu_field(json_writer_t *self, const char *prop, unsigned char num); |
| void jsonw_hu_field(json_writer_t *self, const char *prop, unsigned short num); |
| void jsonw_int_field(json_writer_t *self, const char *prop, int num); |
| void jsonw_s64_field(json_writer_t *self, const char *prop, int64_t num); |
| void jsonw_null_field(json_writer_t *self, const char *prop); |
| void jsonw_luint_field(json_writer_t *self, const char *prop, |
| unsigned long num); |
| void jsonw_lluint_field(json_writer_t *self, const char *prop, |
| unsigned long long num); |
| |
| /* Collections */ |
| void jsonw_start_object(json_writer_t *self); |
| void jsonw_end_object(json_writer_t *self); |
| |
| void jsonw_start_array(json_writer_t *self); |
| void jsonw_end_array(json_writer_t *self); |
| |
| /* Override default exception handling */ |
| typedef void (jsonw_err_handler_fn)(const char *); |
| |
| #endif /* _JSON_WRITER_H_ */ |