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de17bbb188
This API proposes to use the sprintbuf() method to facilitate the forge of buffers in json. Note that this buffer is limited to 128 bytes, so it can not be used everywhere as it without any checks. Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
149 lines
4.4 KiB
C
149 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* json-c wrapper
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* Copyright (C) 2015 Cumulus Networks, Inc.
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*/
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#ifndef _QUAGGA_JSON_H
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#define _QUAGGA_JSON_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "command.h"
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#include "printfrr.h"
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#include <json-c/json.h>
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#include <json-c/printbuf.h>
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/*
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* FRR style JSON iteration.
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* Usage: JSON_FOREACH(...) { ... }
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*/
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#define JSON_FOREACH(jo, joi, join) \
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/* struct json_object *jo; */ \
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/* struct json_object_iterator joi; */ \
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/* struct json_object_iterator join; */ \
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for ((joi) = json_object_iter_begin((jo)), \
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(join) = json_object_iter_end((jo)); \
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json_object_iter_equal(&(joi), &(join)) == 0; \
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json_object_iter_next(&(joi)))
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#define JSON_OBJECT_NEW_ARRAY(json_func, fields, n) \
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({ \
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struct json_object *_json_array = json_object_new_array(); \
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for (int _i = 0; _i < (n); _i++) \
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json_object_array_add(_json_array, \
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(json_func)((fields)[_i])); \
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(_json_array); \
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})
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extern bool use_json(const int argc, struct cmd_token *argv[]);
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extern void json_object_string_add(struct json_object *obj, const char *key,
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const char *s);
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extern void json_object_int_add(struct json_object *obj, const char *key,
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int64_t i);
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void json_object_boolean_add(struct json_object *obj, const char *key,
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bool val);
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extern void json_object_double_add(struct json_object *obj, const char *key,
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double i);
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extern void json_object_boolean_false_add(struct json_object *obj,
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const char *key);
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extern void json_object_boolean_true_add(struct json_object *obj,
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const char *key);
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extern struct json_object *json_object_lock(struct json_object *obj);
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extern void json_object_free(struct json_object *obj);
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extern void json_array_string_add(json_object *json, const char *str);
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/* printfrr => json helpers */
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PRINTFRR(3, 0)
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extern void json_object_string_addv(struct json_object *obj, const char *key,
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const char *fmt, va_list args);
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PRINTFRR(3, 4)
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static inline void json_object_string_addf(struct json_object *obj,
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const char *key, const char *fmt,
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...)
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{
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va_list args;
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va_start(args, fmt);
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json_object_string_addv(obj, key, fmt, args);
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va_end(args);
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}
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PRINTFRR(2, 0)
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extern void json_array_string_addv(json_object *json, const char *fmt,
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va_list args);
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PRINTFRR(2, 3)
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static inline void json_array_string_addf(struct json_object *obj,
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const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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json_array_string_addv(obj, fmt, args);
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va_end(args);
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}
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PRINTFRR(1, 0)
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extern struct json_object *json_object_new_stringv(const char *fmt,
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va_list args);
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PRINTFRR(1, 2)
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static inline struct json_object *json_object_new_stringf(const char *fmt, ...)
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{
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struct json_object *ret;
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va_list args;
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va_start(args, fmt);
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ret = json_object_new_stringv(fmt, args);
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va_end(args);
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return ret;
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}
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/* NOTE: argument order differs! (due to varargs)
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* json_object_object_add(parent, key, child)
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* json_object_object_addv(parent, child, key, va)
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* json_object_object_addf(parent, child, key, ...)
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* (would be weird to have the child inbetween the format string and args)
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*/
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PRINTFRR(3, 0)
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extern void json_object_object_addv(struct json_object *parent,
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struct json_object *child,
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const char *keyfmt, va_list args);
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PRINTFRR(3, 4)
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static inline void json_object_object_addf(struct json_object *parent,
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struct json_object *child,
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const char *keyfmt, ...)
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{
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va_list args;
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va_start(args, keyfmt);
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json_object_object_addv(parent, child, keyfmt, args);
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va_end(args);
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}
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#define JSON_STR "JavaScript Object Notation\n"
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/* NOTE: json-c lib has following commit 316da85 which
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* handles escape of forward slash.
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* This allows prefix "20.0.14.0\/24":{
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* to "20.0.14.0/24":{ some platforms do not have
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* latest copy of json-c where defining below macro.
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*/
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#ifndef JSON_C_TO_STRING_NOSLASHESCAPE
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/**
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* Don't escape forward slashes.
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*/
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#define JSON_C_TO_STRING_NOSLASHESCAPE (1<<4)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _QUAGGA_JSON_H */
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