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1 /*

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 */

8 #ifndef JANSSON_PRIVATE_H

9 #define JANSSON_PRIVATE_H

11 #ifdef HAVE_CONFIG_H

12 #include <jansson_private_config.h>

13 #endif

15 #include <stddef.h>

16 #include "jansson.h"

17 #include "hashtable.h"

18 #include "strbuffer.h"

20 #define container_of(ptr_, type_, member_) \

21 ((type_ *)((char *)ptr_ - offsetof(type_, member_)))

23 /* On some platforms, max() may already be defined */

24 #ifndef max

25 #define max(a, b) ((a) > (b) ? (a) : (b))

26 #endif

28 /* va_copy is a C99 feature. In C89 implementations, it's sometimes

29 available as __va_copy. If not, memcpy() should do the trick. */

30 #ifndef va_copy

31 #ifdef __va_copy

32 #define va_copy __va_copy

33 #else

34 #define va_copy(a, b) memcpy(&(a), &(b), sizeof(va_list))

35 #endif

36 #endif

38 typedef struct {

39 json_t json;

40 hashtable_t hashtable;

41 } json_object_t;

43 typedef struct {

44 json_t json;

45 size_t size;

46 size_t entries;

47 json_t **table;

48 } json_array_t;

50 typedef struct {

51 json_t json;

52 char *value;

53 size_t length;

54 } json_string_t;

56 typedef struct {

57 json_t json;

58 double value;

59 } json_real_t;

61 typedef struct {

62 json_t json;

63 json_int_t value;

64 } json_integer_t;

66 #define json_to_object(json_) container_of(json_, json_object_t, json)

67 #define json_to_array(json_) container_of(json_, json_array_t, json)

68 #define json_to_string(json_) container_of(json_, json_string_t, json)

69 #define json_to_real(json_) container_of(json_, json_real_t, json)

70 #define json_to_integer(json_) container_of(json_, json_integer_t, json)

72 /* Create a string by taking ownership of an existing buffer */

 json_t *jsonp_stringn_nocheck_own(const char *value, size_t len);

75 /* Error message formatting */

 void jsonp_error_init(json_error_t *error, const char *source);

 void jsonp_error_set_source(json_error_t *error, const char *source);

 void jsonp_error_set(json_error_t *error, int line, int column,

79 size_t position, enum json_error_code code,

80 const char *msg, ...);

 void jsonp_error_vset(json_error_t *error, int line, int column,

82 size_t position, enum json_error_code code,

                       const char *msg, va_list ap);

85 /* Locale independent string<->double conversions */

 int jsonp_strtod(strbuffer_t *strbuffer, double *out);

 int jsonp_dtostr(char *buffer, size_t size, double value, int prec);

89 /* Wrappers for custom memory functions */

 void* jsonp_malloc(size_t size) JANSSON_ATTRS(warn_unused_result);

 void jsonp_free(void *ptr);

 char *jsonp_strndup(const char *str, size_t length) JANSSON_ATTRS(warn_unused_result);

 char *jsonp_strdup(const char *str) JANSSON_ATTRS(warn_unused_result);

 char *jsonp_strndup(const char *str, size_t len) JANSSON_ATTRS(warn_unused_result);

97 /* Windows compatibility */

98 #if defined(_WIN32) || defined(WIN32)

99 # if defined(_MSC_VER) /* MS compiller */

100 # if (_MSC_VER < 1900) && !defined(snprintf) /* snprintf not defined yet & not introduced */

101 # define snprintf _snprintf

102 # endif

103 # if (_MSC_VER < 1500) && !defined(vsnprintf) /* vsnprintf not defined yet & not introduced */

104 # define vsnprintf(b,c,f,a) _vsnprintf(b,c,f,a)

105 # endif

106 # else /* Other Windows compiller, old definition */

107 # define snprintf _snprintf

108 # define vsnprintf _vsnprintf

109 # endif

110 #endif

111

112 #endif