TinySpline  0.7.0
Spline Library for a Multitude of Programming Languages
parson.h
1 /*
2  Parson ( http://kgabis.github.com/parson/ )
3  Copyright (c) 2012 - 2017 Krzysztof Gabis
4 
5  Permission is hereby granted, free of charge, to any person obtaining a copy
6  of this software and associated documentation files (the "Software"), to deal
7  in the Software without restriction, including without limitation the rights
8  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9  copies of the Software, and to permit persons to whom the Software is
10  furnished to do so, subject to the following conditions:
11 
12  The above copyright notice and this permission notice shall be included in
13  all copies or substantial portions of the Software.
14 
15  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21  THE SOFTWARE.
22 */
23 
24 #ifndef parson_parson_h
25 #define parson_parson_h
26 
27 #ifdef __cplusplus
28 extern "C"
29 {
30 #endif
31 
32 #include <stddef.h> /* size_t */
33 
34 /* Types and enums */
35 typedef struct json_object_t JSON_Object;
36 typedef struct json_array_t JSON_Array;
37 typedef struct json_value_t JSON_Value;
38 
39 enum json_value_type {
40  JSONError = -1,
41  JSONNull = 1,
42  JSONString = 2,
43  JSONNumber = 3,
44  JSONObject = 4,
45  JSONArray = 5,
46  JSONBoolean = 6
47 };
48 typedef int JSON_Value_Type;
49 
50 enum json_result_t {
51  JSONSuccess = 0,
52  JSONFailure = -1
53 };
54 typedef int JSON_Status;
55 
56 typedef void * (*JSON_Malloc_Function)(size_t);
57 typedef void (*JSON_Free_Function)(void *);
58 
59 /* Call only once, before calling any other function from parson API. If not called, malloc and free
60  from stdlib will be used for all allocations */
61 void json_set_allocation_functions(JSON_Malloc_Function malloc_fun, JSON_Free_Function free_fun);
62 
63 /* Parses first JSON value in a file, returns NULL in case of error */
64 JSON_Value * json_parse_file(const char *filename);
65 
66 /* Parses first JSON value in a file and ignores comments (/ * * / and //),
67  returns NULL in case of error */
68 JSON_Value * json_parse_file_with_comments(const char *filename);
69 
70 /* Parses first JSON value in a string, returns NULL in case of error */
71 JSON_Value * json_parse_string(const char *string);
72 
73 /* Parses first JSON value in a string and ignores comments (/ * * / and //),
74  returns NULL in case of error */
75 JSON_Value * json_parse_string_with_comments(const char *string);
76 
77 /* Serialization */
78 size_t json_serialization_size(const JSON_Value *value); /* returns 0 on fail */
79 JSON_Status json_serialize_to_buffer(const JSON_Value *value, char *buf, size_t buf_size_in_bytes);
80 JSON_Status json_serialize_to_file(const JSON_Value *value, const char *filename);
81 char * json_serialize_to_string(const JSON_Value *value);
82 
83 /* Pretty serialization */
84 size_t json_serialization_size_pretty(const JSON_Value *value); /* returns 0 on fail */
85 JSON_Status json_serialize_to_buffer_pretty(const JSON_Value *value, char *buf, size_t buf_size_in_bytes);
86 JSON_Status json_serialize_to_file_pretty(const JSON_Value *value, const char *filename);
87 char * json_serialize_to_string_pretty(const JSON_Value *value);
88 
89 void json_free_serialized_string(char *string); /* frees string from json_serialize_to_string and json_serialize_to_string_pretty */
90 
91 /* Comparing */
92 int json_value_equals(const JSON_Value *a, const JSON_Value *b);
93 
94 /* Validation
95  This is *NOT* JSON Schema. It validates json by checking if object have identically
96  named fields with matching types.
97  For example schema {"name":"", "age":0} will validate
98  {"name":"Joe", "age":25} and {"name":"Joe", "age":25, "gender":"m"},
99  but not {"name":"Joe"} or {"name":"Joe", "age":"Cucumber"}.
100  In case of arrays, only first value in schema is checked against all values in tested array.
101  Empty objects ({}) validate all objects, empty arrays ([]) validate all arrays,
102  null validates values of every type.
103  */
104 JSON_Status json_validate(const JSON_Value *schema, const JSON_Value *value);
105 
106 /*
107  * JSON Object
108  */
109 JSON_Value * json_object_get_value (const JSON_Object *object, const char *name);
110 const char * json_object_get_string (const JSON_Object *object, const char *name);
111 JSON_Object * json_object_get_object (const JSON_Object *object, const char *name);
112 JSON_Array * json_object_get_array (const JSON_Object *object, const char *name);
113 double json_object_get_number (const JSON_Object *object, const char *name); /* returns 0 on fail */
114 int json_object_get_boolean(const JSON_Object *object, const char *name); /* returns -1 on fail */
115 
116 /* dotget functions enable addressing values with dot notation in nested objects,
117  just like in structs or c++/java/c# objects (e.g. objectA.objectB.value).
118  Because valid names in JSON can contain dots, some values may be inaccessible
119  this way. */
120 JSON_Value * json_object_dotget_value (const JSON_Object *object, const char *name);
121 const char * json_object_dotget_string (const JSON_Object *object, const char *name);
122 JSON_Object * json_object_dotget_object (const JSON_Object *object, const char *name);
123 JSON_Array * json_object_dotget_array (const JSON_Object *object, const char *name);
124 double json_object_dotget_number (const JSON_Object *object, const char *name); /* returns 0 on fail */
125 int json_object_dotget_boolean(const JSON_Object *object, const char *name); /* returns -1 on fail */
126 
127 /* Functions to get available names */
128 size_t json_object_get_count (const JSON_Object *object);
129 const char * json_object_get_name (const JSON_Object *object, size_t index);
130 JSON_Value * json_object_get_value_at(const JSON_Object *object, size_t index);
131 JSON_Value * json_object_get_wrapping_value(const JSON_Object *object);
132 
133 /* Functions to check if object has a value with a specific name. Returned value is 1 if object has
134  * a value and 0 if it doesn't. dothas functions behave exactly like dotget functions. */
135 int json_object_has_value (const JSON_Object *object, const char *name);
136 int json_object_has_value_of_type(const JSON_Object *object, const char *name, JSON_Value_Type type);
137 
138 int json_object_dothas_value (const JSON_Object *object, const char *name);
139 int json_object_dothas_value_of_type(const JSON_Object *object, const char *name, JSON_Value_Type type);
140 
141 /* Creates new name-value pair or frees and replaces old value with a new one.
142  * json_object_set_value does not copy passed value so it shouldn't be freed afterwards. */
143 JSON_Status json_object_set_value(JSON_Object *object, const char *name, JSON_Value *value);
144 JSON_Status json_object_set_string(JSON_Object *object, const char *name, const char *string);
145 JSON_Status json_object_set_number(JSON_Object *object, const char *name, double number);
146 JSON_Status json_object_set_boolean(JSON_Object *object, const char *name, int boolean);
147 JSON_Status json_object_set_null(JSON_Object *object, const char *name);
148 
149 /* Works like dotget functions, but creates whole hierarchy if necessary.
150  * json_object_dotset_value does not copy passed value so it shouldn't be freed afterwards. */
151 JSON_Status json_object_dotset_value(JSON_Object *object, const char *name, JSON_Value *value);
152 JSON_Status json_object_dotset_string(JSON_Object *object, const char *name, const char *string);
153 JSON_Status json_object_dotset_number(JSON_Object *object, const char *name, double number);
154 JSON_Status json_object_dotset_boolean(JSON_Object *object, const char *name, int boolean);
155 JSON_Status json_object_dotset_null(JSON_Object *object, const char *name);
156 
157 /* Frees and removes name-value pair */
158 JSON_Status json_object_remove(JSON_Object *object, const char *name);
159 
160 /* Works like dotget function, but removes name-value pair only on exact match. */
161 JSON_Status json_object_dotremove(JSON_Object *object, const char *key);
162 
163 /* Removes all name-value pairs in object */
164 JSON_Status json_object_clear(JSON_Object *object);
165 
166 /*
167  *JSON Array
168  */
169 JSON_Value * json_array_get_value (const JSON_Array *array, size_t index);
170 const char * json_array_get_string (const JSON_Array *array, size_t index);
171 JSON_Object * json_array_get_object (const JSON_Array *array, size_t index);
172 JSON_Array * json_array_get_array (const JSON_Array *array, size_t index);
173 double json_array_get_number (const JSON_Array *array, size_t index); /* returns 0 on fail */
174 int json_array_get_boolean(const JSON_Array *array, size_t index); /* returns -1 on fail */
175 size_t json_array_get_count (const JSON_Array *array);
176 JSON_Value * json_array_get_wrapping_value(const JSON_Array *array);
177 
178 /* Frees and removes value at given index, does nothing and returns JSONFailure if index doesn't exist.
179  * Order of values in array may change during execution. */
180 JSON_Status json_array_remove(JSON_Array *array, size_t i);
181 
182 /* Frees and removes from array value at given index and replaces it with given one.
183  * Does nothing and returns JSONFailure if index doesn't exist.
184  * json_array_replace_value does not copy passed value so it shouldn't be freed afterwards. */
185 JSON_Status json_array_replace_value(JSON_Array *array, size_t i, JSON_Value *value);
186 JSON_Status json_array_replace_string(JSON_Array *array, size_t i, const char* string);
187 JSON_Status json_array_replace_number(JSON_Array *array, size_t i, double number);
188 JSON_Status json_array_replace_boolean(JSON_Array *array, size_t i, int boolean);
189 JSON_Status json_array_replace_null(JSON_Array *array, size_t i);
190 
191 /* Frees and removes all values from array */
192 JSON_Status json_array_clear(JSON_Array *array);
193 
194 /* Appends new value at the end of array.
195  * json_array_append_value does not copy passed value so it shouldn't be freed afterwards. */
196 JSON_Status json_array_append_value(JSON_Array *array, JSON_Value *value);
197 JSON_Status json_array_append_string(JSON_Array *array, const char *string);
198 JSON_Status json_array_append_number(JSON_Array *array, double number);
199 JSON_Status json_array_append_boolean(JSON_Array *array, int boolean);
200 JSON_Status json_array_append_null(JSON_Array *array);
201 
202 /*
203  *JSON Value
204  */
205 JSON_Value * json_value_init_object (void);
206 JSON_Value * json_value_init_array (void);
207 JSON_Value * json_value_init_string (const char *string); /* copies passed string */
208 JSON_Value * json_value_init_number (double number);
209 JSON_Value * json_value_init_boolean(int boolean);
210 JSON_Value * json_value_init_null (void);
211 JSON_Value * json_value_deep_copy (const JSON_Value *value);
212 void json_value_free (JSON_Value *value);
213 
214 JSON_Value_Type json_value_get_type (const JSON_Value *value);
215 JSON_Object * json_value_get_object (const JSON_Value *value);
216 JSON_Array * json_value_get_array (const JSON_Value *value);
217 const char * json_value_get_string (const JSON_Value *value);
218 double json_value_get_number (const JSON_Value *value);
219 int json_value_get_boolean(const JSON_Value *value);
220 JSON_Value * json_value_get_parent (const JSON_Value *value);
221 
222 /* Same as above, but shorter */
223 JSON_Value_Type json_type (const JSON_Value *value);
224 JSON_Object * json_object (const JSON_Value *value);
225 JSON_Array * json_array (const JSON_Value *value);
226 const char * json_string (const JSON_Value *value);
227 double json_number (const JSON_Value *value);
228 int json_boolean(const JSON_Value *value);
229 
230 #ifdef __cplusplus
231 }
232 #endif
233 
234 #endif
json_array_t
Definition: parson.c:106
json_object_t
Definition: parson.c:98
json_value_t
Definition: parson.c:92
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