lib/json.h

   1 /* json-c wrapper
   2  * Copyright (C) 2015 Cumulus Networks, Inc.
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef _QUAGGA_JSON_H
  22 #define _QUAGGA_JSON_H
  23
  24 #ifdef __cplusplus
  25 extern "C" {
  26 #endif
  27
  28 #if defined(HAVE_JSON_C_JSON_H)
  29 #include <json-c/json.h>
  30
  31 /*
  32  * FRR style JSON iteration.
  33  * Usage: JSON_FOREACH(...) { ... }
  34  */
  35 #define JSON_FOREACH(jo, joi, join)                                            \
  36         /* struct json_object *jo; */                                          \
  37         /* struct json_object_iterator joi; */                                 \
  38         /* struct json_object_iterator join; */                                \
  39         for ((joi) = json_object_iter_begin((jo)),                             \
  40             (join) = json_object_iter_end((jo));                               \
  41              json_object_iter_equal(&(joi), &(join)) == 0;                     \
  42              json_object_iter_next(&(joi)))
  43
  44 #else
  45 #include <json/json.h>
  46
  47 /*
  48  * json_object_to_json_string_ext is only available for json-c
  49  * so let's just turn it back to the original usage.
  50  */
  51 #define json_object_to_json_string_ext(A, B) json_object_to_json_string (A)
  52
  53 extern int json_object_object_get_ex(struct json_object *obj, const char *key,
  54                                      struct json_object **value);
  55 #endif
  56
  57 #include "command.h"
  58
  59 extern bool use_json(const int argc, struct cmd_token *argv[]);
  60 extern void json_object_string_add(struct json_object *obj, const char *key,
  61                                    const char *s);
  62 extern void json_object_int_add(struct json_object *obj, const char *key,
  63                                 int64_t i);
  64 void json_object_boolean_add(struct json_object *obj, const char *key,
  65                              bool val);
  66 extern void json_object_boolean_false_add(struct json_object *obj,
  67                                           const char *key);
  68 extern void json_object_boolean_true_add(struct json_object *obj,
  69                                          const char *key);
  70 extern struct json_object *json_object_lock(struct json_object *obj);
  71 extern void json_object_free(struct json_object *obj);
  72
  73 #define JSON_STR "JavaScript Object Notation\n"
  74
  75 /* NOTE: json-c lib has following commit 316da85 which
  76  * handles escape of forward slash.
  77  * This allows prefix  "20.0.14.0\/24":{
  78  * to  "20.0.14.0/24":{ some platforms do not have
  79  * latest copy of json-c where defining below macro.
  80  */
  81
  82 #ifndef JSON_C_TO_STRING_NOSLASHESCAPE
  83
  84 /**
  85   * Don't escape forward slashes.
  86   */
  87 #define JSON_C_TO_STRING_NOSLASHESCAPE (1<<4)
  88 #endif
  89
  90 #ifdef __cplusplus
  91 }
  92 #endif
  93
  94 #endif /* _QUAGGA_JSON_H */