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 #if defined(HAVE_JSON_C_JSON_H)
  25 #include <json-c/json.h>
  26
  27 /*
  28  * FRR style JSON iteration.
  29  * Usage: JSON_FOREACH(...) { ... }
  30  */
  31 #define JSON_FOREACH(jo, joi, join)                                            \
  32         /* struct json_object *jo; */                                          \
  33         /* struct json_object_iterator joi; */                                 \
  34         /* struct json_object_iterator join; */                                \
  35         for ((joi) = json_object_iter_begin((jo)),                             \
  36             (join) = json_object_iter_end((jo));                               \
  37              json_object_iter_equal(&(joi), &(join)) == 0;                     \
  38              json_object_iter_next(&(joi)))
  39
  40 #else
  41 #include <json/json.h>
  42
  43 /*
  44  * json_object_to_json_string_ext is only available for json-c
  45  * so let's just turn it back to the original usage.
  46  */
  47 #define json_object_to_json_string_ext(A, B) json_object_to_json_string (A)
  48
  49 extern int json_object_object_get_ex(struct json_object *obj, const char *key,
  50                                      struct json_object **value);
  51 #endif
  52
  53 #include "command.h"
  54
  55 extern bool use_json(const int argc, struct cmd_token *argv[]);
  56 extern void json_object_string_add(struct json_object *obj, const char *key,
  57                                    const char *s);
  58 extern void json_object_int_add(struct json_object *obj, const char *key,
  59                                 int64_t i);
  60 extern void json_object_boolean_false_add(struct json_object *obj,
  61                                           const char *key);
  62 extern void json_object_boolean_true_add(struct json_object *obj,
  63                                          const char *key);
  64 extern struct json_object *json_object_lock(struct json_object *obj);
  65 extern void json_object_free(struct json_object *obj);
  66
  67 #define JSON_STR "JavaScript Object Notation\n"
  68
  69 /* NOTE: json-c lib has following commit 316da85 which
  70  * handles escape of forward slash.
  71  * This allows prefix  "20.0.14.0\/24":{
  72  * to  "20.0.14.0/24":{ some platforms do not have
  73  * latest copy of json-c where defining below macro.
  74  */
  75
  76 #ifndef JSON_C_TO_STRING_NOSLASHESCAPE
  77
  78 /**
  79   * Don't escape forward slashes.
  80   */
  81 #define JSON_C_TO_STRING_NOSLASHESCAPE (1<<4)
  82 #endif
  83
  84 #endif /* _QUAGGA_JSON_H */