"Fossies" - the Fresh Open Source Software Archive

Member "jansson-2.14/src/jansson_private.h" (19 Nov 2020, 3832 Bytes) of package /linux/www/jansson-2.14.tar.bz2:

    1 /*
    2  * Copyright (c) 2009-2016 Petri Lehtinen <petri@digip.org>
    3  *
    4  * Jansson is free software; you can redistribute it and/or modify
    5  * it under the terms of the MIT license. See LICENSE for details.
    6  */
    7 
    8 #ifndef JANSSON_PRIVATE_H
    9 #define JANSSON_PRIVATE_H
   10 
   11 #include "hashtable.h"
   12 #include "jansson.h"
   13 #include "jansson_private_config.h"
   14 #include "strbuffer.h"
   15 #include <stddef.h>
   16 
   17 #define container_of(ptr_, type_, member_)                                               \
   18     ((type_ *)((char *)ptr_ - offsetof(type_, member_)))
   19 
   20 /* On some platforms, max() may already be defined */
   21 #ifndef max
   22 #define max(a, b) ((a) > (b) ? (a) : (b))
   23 #endif
   24 
   25 /* va_copy is a C99 feature. In C89 implementations, it's sometimes
   26    available as __va_copy. If not, memcpy() should do the trick. */
   27 #ifndef va_copy
   28 #ifdef __va_copy
   29 #define va_copy __va_copy
   30 #else
   31 #define va_copy(a, b) memcpy(&(a), &(b), sizeof(va_list))
   32 #endif
   33 #endif
   34 
   35 typedef struct {
   36     json_t json;
   37     hashtable_t hashtable;
   38 } json_object_t;
   39 
   40 typedef struct {
   41     json_t json;
   42     size_t size;
   43     size_t entries;
   44     json_t **table;
   45 } json_array_t;
   46 
   47 typedef struct {
   48     json_t json;
   49     char *value;
   50     size_t length;
   51 } json_string_t;
   52 
   53 typedef struct {
   54     json_t json;
   55     double value;
   56 } json_real_t;
   57 
   58 typedef struct {
   59     json_t json;
   60     json_int_t value;
   61 } json_integer_t;
   62 
   63 #define json_to_object(json_)  container_of(json_, json_object_t, json)
   64 #define json_to_array(json_)   container_of(json_, json_array_t, json)
   65 #define json_to_string(json_)  container_of(json_, json_string_t, json)
   66 #define json_to_real(json_)    container_of(json_, json_real_t, json)
   67 #define json_to_integer(json_) container_of(json_, json_integer_t, json)
   68 
   69 /* Create a string by taking ownership of an existing buffer */
   70 json_t *jsonp_stringn_nocheck_own(const char *value, size_t len);
   71 
   72 /* Error message formatting */
   73 void jsonp_error_init(json_error_t *error, const char *source);
   74 void jsonp_error_set_source(json_error_t *error, const char *source);
   75 void jsonp_error_set(json_error_t *error, int line, int column, size_t position,
   76                      enum json_error_code code, const char *msg, ...);
   77 void jsonp_error_vset(json_error_t *error, int line, int column, size_t position,
   78                       enum json_error_code code, const char *msg, va_list ap);
   79 
   80 /* Locale independent string<->double conversions */
   81 int jsonp_strtod(strbuffer_t *strbuffer, double *out);
   82 int jsonp_dtostr(char *buffer, size_t size, double value, int prec);
   83 
   84 /* Wrappers for custom memory functions */
   85 void *jsonp_malloc(size_t size) JANSSON_ATTRS((warn_unused_result));
   86 void jsonp_free(void *ptr);
   87 char *jsonp_strndup(const char *str, size_t length) JANSSON_ATTRS((warn_unused_result));
   88 char *jsonp_strdup(const char *str) JANSSON_ATTRS((warn_unused_result));
   89 char *jsonp_strndup(const char *str, size_t len) JANSSON_ATTRS((warn_unused_result));
   90 
   91 /* Circular reference check*/
   92 /* Space for "0x", double the sizeof a pointer for the hex and a terminator. */
   93 #define LOOP_KEY_LEN (2 + (sizeof(json_t *) * 2) + 1)
   94 int jsonp_loop_check(hashtable_t *parents, const json_t *json, char *key, size_t key_size,
   95                      size_t *key_len_out);
   96 
   97 /* Windows compatibility */
   98 #if defined(_WIN32) || defined(WIN32)
   99 #if defined(_MSC_VER) /* MS compiller */
  100 #if (_MSC_VER < 1900) &&                                                                 \
  101     !defined(snprintf) /* snprintf not defined yet & not introduced */
  102 #define snprintf _snprintf
  103 #endif
  104 #if (_MSC_VER < 1500) &&                                                                 \
  105     !defined(vsnprintf) /* vsnprintf not defined yet & not introduced */
  106 #define vsnprintf(b, c, f, a) _vsnprintf(b, c, f, a)
  107 #endif
  108 #else /* Other Windows compiller, old definition */
  109 #define snprintf  _snprintf
  110 #define vsnprintf _vsnprintf
  111 #endif
  112 #endif
  113 
  114 #endif