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1 /* |
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2 * Copyright (c) 2009-2014 Petri Lehtinen <petri@digip.org> |
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3 * |
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4 * Jansson is free software; you can redistribute it and/or modify |
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5 * it under the terms of the MIT license. See LICENSE for details. |
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6 */ |
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7 |
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8 #ifndef JANSSON_H |
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9 #define JANSSON_H |
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10 |
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11 #include <stdio.h> |
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12 #include <stdlib.h> /* for size_t */ |
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13 #include <stdarg.h> |
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14 |
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15 #include <jansson_config.h> |
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16 |
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17 #ifdef __cplusplus |
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18 extern "C" { |
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19 #endif |
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20 |
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21 /* version */ |
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22 |
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23 #define JANSSON_MAJOR_VERSION 2 |
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24 #define JANSSON_MINOR_VERSION 7 |
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25 #define JANSSON_MICRO_VERSION 0 |
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26 |
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27 /* Micro version is omitted if it's 0 */ |
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28 #define JANSSON_VERSION "2.7" |
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29 |
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30 /* Version as a 3-byte hex number, e.g. 0x010201 == 1.2.1. Use this |
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31 for numeric comparisons, e.g. #if JANSSON_VERSION_HEX >= ... */ |
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32 #define JANSSON_VERSION_HEX ((JANSSON_MAJOR_VERSION << 16) | \ |
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33 (JANSSON_MINOR_VERSION << 8) | \ |
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34 (JANSSON_MICRO_VERSION << 0)) |
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35 |
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36 |
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37 /* types */ |
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38 |
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39 typedef enum { |
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40 JSON_OBJECT, |
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41 JSON_ARRAY, |
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42 JSON_STRING, |
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43 JSON_INTEGER, |
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44 JSON_REAL, |
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45 JSON_TRUE, |
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46 JSON_FALSE, |
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47 JSON_NULL |
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48 } json_type; |
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49 |
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50 typedef struct json_t { |
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51 json_type type; |
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52 size_t refcount; |
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53 } json_t; |
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54 |
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55 #ifndef JANSSON_USING_CMAKE /* disabled if using cmake */ |
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56 #if JSON_INTEGER_IS_LONG_LONG |
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57 #ifdef _WIN32 |
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58 #define JSON_INTEGER_FORMAT "I64d" |
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59 #else |
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60 #define JSON_INTEGER_FORMAT "lld" |
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61 #endif |
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62 typedef long long json_int_t; |
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63 #else |
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64 #define JSON_INTEGER_FORMAT "ld" |
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65 typedef long json_int_t; |
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66 #endif /* JSON_INTEGER_IS_LONG_LONG */ |
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67 #endif |
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68 |
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69 #define json_typeof(json) ((json)->type) |
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70 #define json_is_object(json) ((json) && json_typeof(json) == JSON_OBJECT) |
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71 #define json_is_array(json) ((json) && json_typeof(json) == JSON_ARRAY) |
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72 #define json_is_string(json) ((json) && json_typeof(json) == JSON_STRING) |
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73 #define json_is_integer(json) ((json) && json_typeof(json) == JSON_INTEGER) |
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74 #define json_is_real(json) ((json) && json_typeof(json) == JSON_REAL) |
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75 #define json_is_number(json) (json_is_integer(json) || json_is_real(json)) |
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76 #define json_is_true(json) ((json) && json_typeof(json) == JSON_TRUE) |
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77 #define json_is_false(json) ((json) && json_typeof(json) == JSON_FALSE) |
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78 #define json_boolean_value json_is_true |
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79 #define json_is_boolean(json) (json_is_true(json) || json_is_false(json)) |
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80 #define json_is_null(json) ((json) && json_typeof(json) == JSON_NULL) |
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81 |
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82 /* construction, destruction, reference counting */ |
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83 |
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84 json_t *json_object(void); |
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85 json_t *json_array(void); |
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86 json_t *json_string(const char *value); |
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87 json_t *json_stringn(const char *value, size_t len); |
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88 json_t *json_string_nocheck(const char *value); |
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89 json_t *json_stringn_nocheck(const char *value, size_t len); |
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90 json_t *json_integer(json_int_t value); |
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91 json_t *json_real(double value); |
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92 json_t *json_true(void); |
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93 json_t *json_false(void); |
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94 #define json_boolean(val) ((val) ? json_true() : json_false()) |
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95 json_t *json_null(void); |
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96 |
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97 static JSON_INLINE |
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98 json_t *json_incref(json_t *json) |
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99 { |
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100 if(json && json->refcount != (size_t)-1) |
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101 ++json->refcount; |
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102 return json; |
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103 } |
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104 |
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105 /* do not call json_delete directly */ |
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106 void json_delete(json_t *json); |
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107 |
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108 static JSON_INLINE |
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109 void json_decref(json_t *json) |
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110 { |
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111 if(json && json->refcount != (size_t)-1 && --json->refcount == 0) |
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112 json_delete(json); |
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113 } |
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114 |
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115 |
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116 /* error reporting */ |
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117 |
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118 #define JSON_ERROR_TEXT_LENGTH 160 |
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119 #define JSON_ERROR_SOURCE_LENGTH 80 |
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120 |
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121 typedef struct { |
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122 int line; |
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123 int column; |
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124 int position; |
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125 char source[JSON_ERROR_SOURCE_LENGTH]; |
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126 char text[JSON_ERROR_TEXT_LENGTH]; |
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127 } json_error_t; |
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128 |
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129 |
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130 /* getters, setters, manipulation */ |
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131 |
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132 void json_object_seed(size_t seed); |
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133 size_t json_object_size(const json_t *object); |
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134 json_t *json_object_get(const json_t *object, const char *key); |
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135 int json_object_set_new(json_t *object, const char *key, json_t *value); |
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136 int json_object_set_new_nocheck(json_t *object, const char *key, json_t *value); |
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137 int json_object_del(json_t *object, const char *key); |
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138 int json_object_clear(json_t *object); |
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139 int json_object_update(json_t *object, json_t *other); |
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140 int json_object_update_existing(json_t *object, json_t *other); |
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141 int json_object_update_missing(json_t *object, json_t *other); |
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142 void *json_object_iter(json_t *object); |
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143 void *json_object_iter_at(json_t *object, const char *key); |
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144 void *json_object_key_to_iter(const char *key); |
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145 void *json_object_iter_next(json_t *object, void *iter); |
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146 const char *json_object_iter_key(void *iter); |
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147 json_t *json_object_iter_value(void *iter); |
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148 int json_object_iter_set_new(json_t *object, void *iter, json_t *value); |
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149 |
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150 #define json_object_foreach(object, key, value) \ |
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151 for(key = json_object_iter_key(json_object_iter(object)); \ |
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152 key && (value = json_object_iter_value(json_object_key_to_iter(key))); \ |
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153 key = json_object_iter_key(json_object_iter_next(object, json_object_key_to_iter(key)))) |
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154 |
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155 #define json_array_foreach(array, index, value) \ |
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156 for(index = 0; \ |
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157 index < json_array_size(array) && (value = json_array_get(array, index)); \ |
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158 index++) |
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159 |
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160 static JSON_INLINE |
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161 int json_object_set(json_t *object, const char *key, json_t *value) |
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162 { |
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163 return json_object_set_new(object, key, json_incref(value)); |
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164 } |
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165 |
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166 static JSON_INLINE |
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167 int json_object_set_nocheck(json_t *object, const char *key, json_t *value) |
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168 { |
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169 return json_object_set_new_nocheck(object, key, json_incref(value)); |
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170 } |
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171 |
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172 static JSON_INLINE |
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173 int json_object_iter_set(json_t *object, void *iter, json_t *value) |
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174 { |
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175 return json_object_iter_set_new(object, iter, json_incref(value)); |
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176 } |
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177 |
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178 size_t json_array_size(const json_t *array); |
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179 json_t *json_array_get(const json_t *array, size_t index); |
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180 int json_array_set_new(json_t *array, size_t index, json_t *value); |
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181 int json_array_append_new(json_t *array, json_t *value); |
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182 int json_array_insert_new(json_t *array, size_t index, json_t *value); |
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183 int json_array_remove(json_t *array, size_t index); |
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184 int json_array_clear(json_t *array); |
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185 int json_array_extend(json_t *array, json_t *other); |
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186 |
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187 static JSON_INLINE |
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188 int json_array_set(json_t *array, size_t ind, json_t *value) |
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189 { |
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190 return json_array_set_new(array, ind, json_incref(value)); |
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191 } |
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192 |
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193 static JSON_INLINE |
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194 int json_array_append(json_t *array, json_t *value) |
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195 { |
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196 return json_array_append_new(array, json_incref(value)); |
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197 } |
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198 |
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199 static JSON_INLINE |
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200 int json_array_insert(json_t *array, size_t ind, json_t *value) |
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201 { |
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202 return json_array_insert_new(array, ind, json_incref(value)); |
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203 } |
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204 |
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205 const char *json_string_value(const json_t *string); |
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206 size_t json_string_length(const json_t *string); |
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207 json_int_t json_integer_value(const json_t *integer); |
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208 double json_real_value(const json_t *real); |
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209 double json_number_value(const json_t *json); |
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210 |
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211 int json_string_set(json_t *string, const char *value); |
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212 int json_string_setn(json_t *string, const char *value, size_t len); |
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213 int json_string_set_nocheck(json_t *string, const char *value); |
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214 int json_string_setn_nocheck(json_t *string, const char *value, size_t len); |
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215 int json_integer_set(json_t *integer, json_int_t value); |
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216 int json_real_set(json_t *real, double value); |
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217 |
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218 /* pack, unpack */ |
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219 |
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220 json_t *json_pack(const char *fmt, ...); |
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221 json_t *json_pack_ex(json_error_t *error, size_t flags, const char *fmt, ...); |
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222 json_t *json_vpack_ex(json_error_t *error, size_t flags, const char *fmt, va_list ap); |
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223 |
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224 #define JSON_VALIDATE_ONLY 0x1 |
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225 #define JSON_STRICT 0x2 |
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226 |
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227 int json_unpack(json_t *root, const char *fmt, ...); |
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228 int json_unpack_ex(json_t *root, json_error_t *error, size_t flags, const char *fmt, ...); |
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229 int json_vunpack_ex(json_t *root, json_error_t *error, size_t flags, const char *fmt, va_list ap); |
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230 |
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231 |
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232 /* equality */ |
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233 |
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234 int json_equal(json_t *value1, json_t *value2); |
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235 |
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236 |
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237 /* copying */ |
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238 |
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239 json_t *json_copy(json_t *value); |
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240 json_t *json_deep_copy(const json_t *value); |
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241 |
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242 |
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243 /* decoding */ |
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244 |
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245 #define JSON_REJECT_DUPLICATES 0x1 |
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246 #define JSON_DISABLE_EOF_CHECK 0x2 |
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247 #define JSON_DECODE_ANY 0x4 |
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248 #define JSON_DECODE_INT_AS_REAL 0x8 |
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249 #define JSON_ALLOW_NUL 0x10 |
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250 |
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251 typedef size_t (*json_load_callback_t)(void *buffer, size_t buflen, void *data); |
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252 |
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253 json_t *json_loads(const char *input, size_t flags, json_error_t *error); |
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254 json_t *json_loadb(const char *buffer, size_t buflen, size_t flags, json_error_t *error); |
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255 json_t *json_loadf(FILE *input, size_t flags, json_error_t *error); |
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256 json_t *json_load_file(const char *path, size_t flags, json_error_t *error); |
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257 json_t *json_load_callback(json_load_callback_t callback, void *data, size_t flags, json_error_t *error); |
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258 |
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259 |
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260 /* encoding */ |
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261 |
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262 #define JSON_MAX_INDENT 0x1F |
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263 #define JSON_INDENT(n) ((n) & JSON_MAX_INDENT) |
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264 #define JSON_COMPACT 0x20 |
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265 #define JSON_ENSURE_ASCII 0x40 |
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266 #define JSON_SORT_KEYS 0x80 |
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267 #define JSON_PRESERVE_ORDER 0x100 |
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268 #define JSON_ENCODE_ANY 0x200 |
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269 #define JSON_ESCAPE_SLASH 0x400 |
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270 #define JSON_REAL_PRECISION(n) (((n) & 0x1F) << 11) |
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271 |
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272 typedef int (*json_dump_callback_t)(const char *buffer, size_t size, void *data); |
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273 |
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274 char *json_dumps(const json_t *json, size_t flags); |
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275 int json_dumpf(const json_t *json, FILE *output, size_t flags); |
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276 int json_dump_file(const json_t *json, const char *path, size_t flags); |
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277 int json_dump_callback(const json_t *json, json_dump_callback_t callback, void *data, size_t flags); |
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278 |
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279 /* custom memory allocation */ |
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280 |
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281 typedef void *(*json_malloc_t)(size_t); |
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282 typedef void (*json_free_t)(void *); |
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283 |
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284 void json_set_alloc_funcs(json_malloc_t malloc_fn, json_free_t free_fn); |
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285 |
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286 #ifdef __cplusplus |
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287 } |
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288 #endif |
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289 |
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290 #endif |
