/* SPDX-License-Identifier: (GPL-2.0-only 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> #include <stdarg.h> #include <linux/compiler.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 */ void __printf(2, 0) jsonw_vprintf_enquote(json_writer_t *self, const char *fmt, va_list ap); void __printf(2, 3) 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, uint64_t number); void jsonw_hu(json_writer_t *self, unsigned short number); void jsonw_int(json_writer_t *self, int64_t number); void jsonw_null(json_writer_t *self); void jsonw_lluint(json_writer_t *self, unsigned long long int 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, uint64_t 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, int64_t num); void jsonw_null_field(json_writer_t *self, const char *prop); void jsonw_lluint_field(json_writer_t *self, const char *prop, unsigned long long int num); void jsonw_float_field_fmt(json_writer_t *self, const char *prop, const char *fmt, double val); /* 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_ */