[782a6ee] | 1 | /* |
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| 2 | Parson ( http://kgabis.github.com/parson/ ) |
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| 3 | Copyright (c) 2012 - 2014 Krzysztof Gabis |
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| 4 | |
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| 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 6 | of this software and associated documentation files (the "Software"), to deal |
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| 7 | in the Software without restriction, including without limitation the rights |
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| 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 9 | copies of the Software, and to permit persons to whom the Software is |
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| 10 | furnished to do so, subject to the following conditions: |
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| 11 | |
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| 12 | The above copyright notice and this permission notice shall be included in |
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| 13 | all copies or substantial portions of the Software. |
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| 14 | |
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| 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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| 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 21 | THE SOFTWARE. |
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| 22 | */ |
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| 23 | #ifdef _MSC_VER |
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| 24 | #define _CRT_SECURE_NO_WARNINGS |
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| 25 | #endif |
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| 26 | |
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| 27 | #include "parson.h" |
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| 28 | |
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| 29 | #include <stdio.h> |
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| 30 | #include <stdlib.h> |
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| 31 | #include <string.h> |
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| 32 | #include <ctype.h> |
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| 33 | #include <math.h> |
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| 34 | |
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| 35 | #define STARTING_CAPACITY 15 |
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| 36 | #define ARRAY_MAX_CAPACITY 122880 /* 15*(2^13) */ |
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| 37 | #define OBJECT_MAX_CAPACITY 960 /* 15*(2^6) */ |
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| 38 | #define MAX_NESTING 19 |
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| 39 | #define DOUBLE_SERIALIZATION_FORMAT "%f" |
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| 40 | |
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| 41 | #define SIZEOF_TOKEN(a) (sizeof(a) - 1) |
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| 42 | #define SKIP_CHAR(str) ((*str)++) |
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| 43 | #define SKIP_WHITESPACES(str) while (isspace(**str)) { SKIP_CHAR(str); } |
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| 44 | #define MAX(a, b) ((a) > (b) ? (a) : (b)) |
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| 45 | |
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| 46 | #define PARSON_MALLOC(a) malloc(a) |
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| 47 | #define PARSON_FREE(a) free((void*)(a)) |
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| 48 | #define PARSON_REALLOC(a, b) realloc((a), (b)) |
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| 49 | |
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| 50 | #define PRINT_AND_SKIP(str, to_append) str += sprintf(str, to_append); |
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| 51 | #define PRINTF_AND_SKIP(str, format, to_append) str += sprintf(str, format, to_append); |
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| 52 | |
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[5726a0d] | 53 | #define IS_CONT(b) (((unsigned char)(b) & 0xC0) == 0x80) /* is utf-8 continuation byte */ |
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| 54 | |
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[782a6ee] | 55 | /* Type definitions */ |
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| 56 | typedef union json_value_value { |
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| 57 | const char *string; |
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| 58 | double number; |
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| 59 | JSON_Object *object; |
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| 60 | JSON_Array *array; |
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| 61 | int boolean; |
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| 62 | int null; |
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| 63 | } JSON_Value_Value; |
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| 64 | |
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| 65 | struct json_value_t { |
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| 66 | JSON_Value_Type type; |
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| 67 | JSON_Value_Value value; |
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| 68 | }; |
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| 69 | |
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| 70 | struct json_object_t { |
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| 71 | const char **names; |
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| 72 | JSON_Value **values; |
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| 73 | size_t count; |
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| 74 | size_t capacity; |
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| 75 | }; |
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| 76 | |
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| 77 | struct json_array_t { |
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| 78 | JSON_Value **items; |
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| 79 | size_t count; |
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| 80 | size_t capacity; |
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| 81 | }; |
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| 82 | |
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| 83 | /* Various */ |
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| 84 | static char * read_file(const char *filename); |
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| 85 | static void remove_comments(char *string, const char *start_token, const char *end_token); |
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| 86 | static int try_realloc(void **ptr, size_t new_size); |
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| 87 | static char * parson_strndup(const char *string, size_t n); |
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| 88 | static char * parson_strdup(const char *string); |
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[5726a0d] | 89 | static int is_utf16_hex(const unsigned char *string); |
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| 90 | static int num_bytes_in_utf8_sequence(unsigned char c); |
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| 91 | static int verify_utf8_sequence(const unsigned char *string, int *len); |
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| 92 | static int is_valid_utf8(const char *string, size_t string_len); |
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[782a6ee] | 93 | static int is_decimal(const char *string, size_t length); |
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[5726a0d] | 94 | static size_t serialization_strlen(const char *string); |
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[782a6ee] | 95 | |
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| 96 | /* JSON Object */ |
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| 97 | static JSON_Object * json_object_init(void); |
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| 98 | static JSON_Status json_object_add(JSON_Object *object, const char *name, JSON_Value *value); |
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| 99 | static JSON_Status json_object_resize(JSON_Object *object, size_t capacity); |
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| 100 | static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n); |
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| 101 | static void json_object_free(JSON_Object *object); |
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| 102 | |
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| 103 | /* JSON Array */ |
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| 104 | static JSON_Array * json_array_init(void); |
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| 105 | static JSON_Status json_array_add(JSON_Array *array, JSON_Value *value); |
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| 106 | static JSON_Status json_array_resize(JSON_Array *array, size_t capacity); |
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| 107 | static void json_array_free(JSON_Array *array); |
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| 108 | |
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| 109 | /* JSON Value */ |
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| 110 | static JSON_Value * json_value_init_string_no_copy(const char *string); |
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| 111 | |
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| 112 | /* Parser */ |
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| 113 | static void skip_quotes(const char **string); |
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| 114 | static int parse_utf_16(const char **unprocessed, char **processed); |
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| 115 | static char* process_string(const char *input, size_t len); |
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| 116 | static const char * get_quoted_string(const char **string); |
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| 117 | static JSON_Value * parse_object_value(const char **string, size_t nesting); |
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| 118 | static JSON_Value * parse_array_value(const char **string, size_t nesting); |
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| 119 | static JSON_Value * parse_string_value(const char **string); |
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| 120 | static JSON_Value * parse_boolean_value(const char **string); |
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| 121 | static JSON_Value * parse_number_value(const char **string); |
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| 122 | static JSON_Value * parse_null_value(const char **string); |
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| 123 | static JSON_Value * parse_value(const char **string, size_t nesting); |
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| 124 | |
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| 125 | /* Serialization */ |
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| 126 | static size_t json_serialization_size_r(const JSON_Value *value, char *buf); |
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| 127 | static char * json_serialize_to_buffer_r(const JSON_Value *value, char *buf); |
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| 128 | static char * json_serialize_string(const char *string, char *buf); |
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| 129 | |
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| 130 | /* Various */ |
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| 131 | static int try_realloc(void **ptr, size_t new_size) { |
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| 132 | void *reallocated_ptr = NULL; |
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| 133 | if (new_size == 0) { |
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| 134 | return JSONFailure; |
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| 135 | } |
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| 136 | reallocated_ptr = PARSON_REALLOC(*ptr, new_size); |
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| 137 | if (reallocated_ptr == NULL) { |
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| 138 | return JSONFailure; |
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| 139 | } |
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| 140 | *ptr = reallocated_ptr; |
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| 141 | return JSONSuccess; |
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| 142 | } |
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| 143 | |
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| 144 | static char * parson_strndup(const char *string, size_t n) { |
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| 145 | char *output_string = (char*)PARSON_MALLOC(n + 1); |
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| 146 | if (!output_string) |
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| 147 | return NULL; |
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| 148 | output_string[n] = '\0'; |
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| 149 | strncpy(output_string, string, n); |
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| 150 | return output_string; |
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| 151 | } |
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| 152 | |
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| 153 | static char * parson_strdup(const char *string) { |
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| 154 | return parson_strndup(string, strlen(string)); |
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| 155 | } |
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| 156 | |
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[5726a0d] | 157 | static int is_utf16_hex(const unsigned char *s) { |
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[782a6ee] | 158 | return isxdigit(s[0]) && isxdigit(s[1]) && isxdigit(s[2]) && isxdigit(s[3]); |
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| 159 | } |
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| 160 | |
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[5726a0d] | 161 | static int num_bytes_in_utf8_sequence(unsigned char c) { |
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| 162 | if (c == 0xC0 || c == 0xC1 || c > 0xF4 || IS_CONT(c)) { |
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| 163 | return 0; |
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| 164 | } else if ((c & 0x80) == 0) { /* 0xxxxxxx */ |
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| 165 | return 1; |
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| 166 | } else if ((c & 0xE0) == 0xC0) { /* 110xxxxx */ |
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| 167 | return 2; |
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| 168 | } else if ((c & 0xF0) == 0xE0) { /* 1110xxxx */ |
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| 169 | return 3; |
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| 170 | } else if ((c & 0xF8) == 0xF0) { /* 11110xxx */ |
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| 171 | return 4; |
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| 172 | } |
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| 173 | return 0; /* won't happen */ |
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| 174 | } |
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| 175 | |
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| 176 | static int verify_utf8_sequence(const unsigned char *string, int *len) { |
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| 177 | unsigned int cp = 0; |
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| 178 | *len = num_bytes_in_utf8_sequence(string[0]); |
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| 179 | |
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| 180 | if (*len == 1) { |
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| 181 | cp = string[0]; |
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| 182 | } else if (*len == 2 && IS_CONT(string[1])) { |
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| 183 | cp = string[0] & 0x1F; |
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| 184 | cp = (cp << 6) | (string[1] & 0x3F); |
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| 185 | } else if (*len == 3 && IS_CONT(string[1]) && IS_CONT(string[2])) { |
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| 186 | cp = ((unsigned char)string[0]) & 0xF; |
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| 187 | cp = (cp << 6) | (string[1] & 0x3F); |
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| 188 | cp = (cp << 6) | (string[2] & 0x3F); |
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| 189 | } else if (*len == 4 && IS_CONT(string[1]) && IS_CONT(string[2]) && IS_CONT(string[3])) { |
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| 190 | cp = string[0] & 0x7; |
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| 191 | cp = (cp << 6) | (string[1] & 0x3F); |
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| 192 | cp = (cp << 6) | (string[2] & 0x3F); |
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| 193 | cp = (cp << 6) | (string[3] & 0x3F); |
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| 194 | } else { |
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| 195 | return 0; |
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| 196 | } |
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| 197 | |
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| 198 | /* overlong encodings */ |
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| 199 | if ((cp < 0x80 && *len > 1) || |
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| 200 | (cp < 0x800 && *len > 2) || |
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| 201 | (cp < 0x10000 && *len > 3)) { |
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| 202 | return 0; |
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| 203 | } |
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| 204 | |
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| 205 | /* invalid unicode */ |
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| 206 | if (cp > 0x10FFFF) { |
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| 207 | return 0; |
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| 208 | } |
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| 209 | |
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| 210 | /* surrogate halves */ |
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| 211 | if (cp >= 0xD800 && cp <= 0xDFFF) { |
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| 212 | return 0; |
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| 213 | } |
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| 214 | |
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| 215 | return 1; |
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| 216 | } |
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| 217 | |
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| 218 | static int is_valid_utf8(const char *string, size_t string_len) { |
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| 219 | int len = 0; |
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| 220 | const char *string_end = string + string_len; |
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| 221 | while (string < string_end) { |
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| 222 | if (!verify_utf8_sequence((const unsigned char*)string, &len)) { |
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| 223 | return 0; |
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| 224 | } |
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| 225 | string += len; |
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| 226 | } |
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| 227 | return 1; |
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| 228 | } |
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| 229 | |
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[782a6ee] | 230 | static int is_decimal(const char *string, size_t length) { |
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| 231 | if (length > 1 && string[0] == '0' && string[1] != '.') |
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| 232 | return 0; |
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| 233 | if (length > 2 && !strncmp(string, "-0", 2) && string[2] != '.') |
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| 234 | return 0; |
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| 235 | while (length--) |
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| 236 | if (strchr("xX", string[length])) |
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| 237 | return 0; |
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| 238 | return 1; |
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| 239 | } |
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| 240 | |
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[5726a0d] | 241 | static size_t serialization_strlen(const char *string) { |
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[782a6ee] | 242 | size_t result = 0; |
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| 243 | size_t i = 0, len = strlen(string); |
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| 244 | for (i = 0; i < len; i++) { |
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| 245 | if (strchr("\"\\\b\f\n\r\t", string[i])) /* must be escaped */ |
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| 246 | result += 2; |
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| 247 | else |
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| 248 | result += 1; |
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| 249 | } |
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| 250 | return result; |
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| 251 | } |
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| 252 | |
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| 253 | static char * read_file(const char * filename) { |
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| 254 | FILE *fp = fopen(filename, "r"); |
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| 255 | size_t file_size; |
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[5726a0d] | 256 | long pos; |
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[782a6ee] | 257 | char *file_contents; |
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| 258 | if (!fp) |
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| 259 | return NULL; |
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| 260 | fseek(fp, 0L, SEEK_END); |
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[5726a0d] | 261 | pos = ftell(fp); |
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| 262 | if (pos < 0) { |
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| 263 | fclose(fp); |
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| 264 | return NULL; |
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| 265 | } |
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| 266 | file_size = pos; |
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[782a6ee] | 267 | rewind(fp); |
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| 268 | file_contents = (char*)PARSON_MALLOC(sizeof(char) * (file_size + 1)); |
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| 269 | if (!file_contents) { |
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| 270 | fclose(fp); |
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| 271 | return NULL; |
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| 272 | } |
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| 273 | if (fread(file_contents, file_size, 1, fp) < 1) { |
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| 274 | if (ferror(fp)) { |
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| 275 | fclose(fp); |
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| 276 | PARSON_FREE(file_contents); |
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| 277 | return NULL; |
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| 278 | } |
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| 279 | } |
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| 280 | fclose(fp); |
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| 281 | file_contents[file_size] = '\0'; |
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| 282 | return file_contents; |
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| 283 | } |
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| 284 | |
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| 285 | static void remove_comments(char *string, const char *start_token, const char *end_token) { |
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| 286 | int in_string = 0, escaped = 0; |
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| 287 | size_t i; |
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| 288 | char *ptr = NULL, current_char; |
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| 289 | size_t start_token_len = strlen(start_token); |
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| 290 | size_t end_token_len = strlen(end_token); |
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| 291 | if (start_token_len == 0 || end_token_len == 0) |
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| 292 | return; |
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| 293 | while ((current_char = *string) != '\0') { |
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| 294 | if (current_char == '\\' && !escaped) { |
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| 295 | escaped = 1; |
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| 296 | string++; |
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| 297 | continue; |
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| 298 | } else if (current_char == '\"' && !escaped) { |
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| 299 | in_string = !in_string; |
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| 300 | } else if (!in_string && strncmp(string, start_token, start_token_len) == 0) { |
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| 301 | for(i = 0; i < start_token_len; i++) |
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| 302 | string[i] = ' '; |
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| 303 | string = string + start_token_len; |
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| 304 | ptr = strstr(string, end_token); |
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| 305 | if (!ptr) |
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| 306 | return; |
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| 307 | for (i = 0; i < (ptr - string) + end_token_len; i++) |
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| 308 | string[i] = ' '; |
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| 309 | string = ptr + end_token_len - 1; |
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| 310 | } |
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| 311 | escaped = 0; |
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| 312 | string++; |
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| 313 | } |
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| 314 | } |
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| 315 | |
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| 316 | /* JSON Object */ |
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| 317 | static JSON_Object * json_object_init(void) { |
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| 318 | JSON_Object *new_obj = (JSON_Object*)PARSON_MALLOC(sizeof(JSON_Object)); |
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| 319 | if (!new_obj) |
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| 320 | return NULL; |
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| 321 | new_obj->names = (const char**)NULL; |
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| 322 | new_obj->values = (JSON_Value**)NULL; |
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| 323 | new_obj->capacity = 0; |
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| 324 | new_obj->count = 0; |
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| 325 | return new_obj; |
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| 326 | } |
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| 327 | |
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| 328 | static JSON_Status json_object_add(JSON_Object *object, const char *name, JSON_Value *value) { |
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[5726a0d] | 329 | size_t index = 0; |
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| 330 | if (object == NULL || name == NULL || value == NULL) { |
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| 331 | return JSONFailure; |
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| 332 | } |
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[782a6ee] | 333 | if (object->count >= object->capacity) { |
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| 334 | size_t new_capacity = MAX(object->capacity * 2, STARTING_CAPACITY); |
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| 335 | if (new_capacity > OBJECT_MAX_CAPACITY) |
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| 336 | return JSONFailure; |
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| 337 | if (json_object_resize(object, new_capacity) == JSONFailure) |
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| 338 | return JSONFailure; |
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| 339 | } |
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| 340 | if (json_object_get_value(object, name) != NULL) |
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| 341 | return JSONFailure; |
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| 342 | index = object->count; |
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| 343 | object->names[index] = parson_strdup(name); |
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[5726a0d] | 344 | if (object->names[index] == NULL) |
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[782a6ee] | 345 | return JSONFailure; |
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| 346 | object->values[index] = value; |
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| 347 | object->count++; |
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| 348 | return JSONSuccess; |
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| 349 | } |
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| 350 | |
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| 351 | static JSON_Status json_object_resize(JSON_Object *object, size_t capacity) { |
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| 352 | if (try_realloc((void**)&object->names, capacity * sizeof(char*)) == JSONFailure) |
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| 353 | return JSONFailure; |
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| 354 | if (try_realloc((void**)&object->values, capacity * sizeof(JSON_Value*)) == JSONFailure) |
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| 355 | return JSONFailure; |
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| 356 | object->capacity = capacity; |
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| 357 | return JSONSuccess; |
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| 358 | } |
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| 359 | |
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| 360 | static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n) { |
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| 361 | size_t i, name_length; |
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| 362 | for (i = 0; i < json_object_get_count(object); i++) { |
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| 363 | name_length = strlen(object->names[i]); |
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| 364 | if (name_length != n) |
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| 365 | continue; |
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| 366 | if (strncmp(object->names[i], name, n) == 0) |
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| 367 | return object->values[i]; |
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| 368 | } |
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| 369 | return NULL; |
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| 370 | } |
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| 371 | |
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| 372 | static void json_object_free(JSON_Object *object) { |
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| 373 | while(object->count--) { |
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| 374 | PARSON_FREE(object->names[object->count]); |
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| 375 | json_value_free(object->values[object->count]); |
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| 376 | } |
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| 377 | PARSON_FREE(object->names); |
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| 378 | PARSON_FREE(object->values); |
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| 379 | PARSON_FREE(object); |
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| 380 | } |
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| 381 | |
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| 382 | /* JSON Array */ |
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| 383 | static JSON_Array * json_array_init(void) { |
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| 384 | JSON_Array *new_array = (JSON_Array*)PARSON_MALLOC(sizeof(JSON_Array)); |
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| 385 | if (!new_array) |
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| 386 | return NULL; |
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| 387 | new_array->items = (JSON_Value**)NULL; |
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| 388 | new_array->capacity = 0; |
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| 389 | new_array->count = 0; |
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| 390 | return new_array; |
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| 391 | } |
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| 392 | |
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| 393 | static JSON_Status json_array_add(JSON_Array *array, JSON_Value *value) { |
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| 394 | if (array->count >= array->capacity) { |
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| 395 | size_t new_capacity = MAX(array->capacity * 2, STARTING_CAPACITY); |
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| 396 | if (new_capacity > ARRAY_MAX_CAPACITY) |
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| 397 | return JSONFailure; |
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| 398 | if (json_array_resize(array, new_capacity) == JSONFailure) |
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| 399 | return JSONFailure; |
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| 400 | } |
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| 401 | array->items[array->count] = value; |
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| 402 | array->count++; |
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| 403 | return JSONSuccess; |
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| 404 | } |
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| 405 | |
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| 406 | static JSON_Status json_array_resize(JSON_Array *array, size_t capacity) { |
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| 407 | if (try_realloc((void**)&array->items, capacity * sizeof(JSON_Value*)) == JSONFailure) |
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| 408 | return JSONFailure; |
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| 409 | array->capacity = capacity; |
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| 410 | return JSONSuccess; |
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| 411 | } |
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| 412 | |
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| 413 | static void json_array_free(JSON_Array *array) { |
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| 414 | while (array->count--) |
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| 415 | json_value_free(array->items[array->count]); |
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| 416 | PARSON_FREE(array->items); |
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| 417 | PARSON_FREE(array); |
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| 418 | } |
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| 419 | |
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| 420 | /* JSON Value */ |
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| 421 | static JSON_Value * json_value_init_string_no_copy(const char *string) { |
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| 422 | JSON_Value *new_value = (JSON_Value*)PARSON_MALLOC(sizeof(JSON_Value)); |
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| 423 | if (!new_value) |
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| 424 | return NULL; |
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| 425 | new_value->type = JSONString; |
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| 426 | new_value->value.string = string; |
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| 427 | return new_value; |
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| 428 | } |
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| 429 | |
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| 430 | /* Parser */ |
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| 431 | static void skip_quotes(const char **string) { |
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| 432 | SKIP_CHAR(string); |
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| 433 | while (**string != '\"') { |
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| 434 | if (**string == '\0') |
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| 435 | return; |
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| 436 | if (**string == '\\') { |
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| 437 | SKIP_CHAR(string); |
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| 438 | if (**string == '\0') |
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| 439 | return; |
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| 440 | } |
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| 441 | SKIP_CHAR(string); |
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| 442 | } |
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| 443 | SKIP_CHAR(string); |
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| 444 | } |
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| 445 | |
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| 446 | static int parse_utf_16(const char **unprocessed, char **processed) { |
---|
| 447 | unsigned int cp, lead, trail; |
---|
| 448 | char *processed_ptr = *processed; |
---|
| 449 | const char *unprocessed_ptr = *unprocessed; |
---|
| 450 | unprocessed_ptr++; /* skips u */ |
---|
[5726a0d] | 451 | if (!is_utf16_hex((const unsigned char*)unprocessed_ptr) || sscanf(unprocessed_ptr, "%4x", &cp) == EOF) |
---|
[782a6ee] | 452 | return JSONFailure; |
---|
| 453 | if (cp < 0x80) { |
---|
| 454 | *processed_ptr = cp; /* 0xxxxxxx */ |
---|
| 455 | } else if (cp < 0x800) { |
---|
| 456 | *processed_ptr++ = ((cp >> 6) & 0x1F) | 0xC0; /* 110xxxxx */ |
---|
| 457 | *processed_ptr = ((cp ) & 0x3F) | 0x80; /* 10xxxxxx */ |
---|
| 458 | } else if (cp < 0xD800 || cp > 0xDFFF) { |
---|
| 459 | *processed_ptr++ = ((cp >> 12) & 0x0F) | 0xE0; /* 1110xxxx */ |
---|
| 460 | *processed_ptr++ = ((cp >> 6) & 0x3F) | 0x80; /* 10xxxxxx */ |
---|
| 461 | *processed_ptr = ((cp ) & 0x3F) | 0x80; /* 10xxxxxx */ |
---|
| 462 | } else if (cp >= 0xD800 && cp <= 0xDBFF) { /* lead surrogate (0xD800..0xDBFF) */ |
---|
| 463 | lead = cp; |
---|
| 464 | unprocessed_ptr += 4; /* should always be within the buffer, otherwise previous sscanf would fail */ |
---|
| 465 | if (*unprocessed_ptr++ != '\\' || *unprocessed_ptr++ != 'u' || /* starts with \u? */ |
---|
[5726a0d] | 466 | !is_utf16_hex((const unsigned char*)unprocessed_ptr) || |
---|
[782a6ee] | 467 | sscanf(unprocessed_ptr, "%4x", &trail) == EOF || |
---|
| 468 | trail < 0xDC00 || trail > 0xDFFF) { /* valid trail surrogate? (0xDC00..0xDFFF) */ |
---|
| 469 | return JSONFailure; |
---|
| 470 | } |
---|
| 471 | cp = ((((lead-0xD800)&0x3FF)<<10)|((trail-0xDC00)&0x3FF))+0x010000; |
---|
| 472 | *processed_ptr++ = (((cp >> 18) & 0x07) | 0xF0); /* 11110xxx */ |
---|
| 473 | *processed_ptr++ = (((cp >> 12) & 0x3F) | 0x80); /* 10xxxxxx */ |
---|
| 474 | *processed_ptr++ = (((cp >> 6) & 0x3F) | 0x80); /* 10xxxxxx */ |
---|
| 475 | *processed_ptr = (((cp ) & 0x3F) | 0x80); /* 10xxxxxx */ |
---|
| 476 | } else { /* trail surrogate before lead surrogate */ |
---|
| 477 | return JSONFailure; |
---|
| 478 | } |
---|
| 479 | unprocessed_ptr += 3; |
---|
| 480 | *processed = processed_ptr; |
---|
| 481 | *unprocessed = unprocessed_ptr; |
---|
| 482 | return JSONSuccess; |
---|
| 483 | } |
---|
| 484 | |
---|
| 485 | |
---|
| 486 | /* Copies and processes passed string up to supplied length. |
---|
| 487 | Example: "\u006Corem ipsum" -> lorem ipsum */ |
---|
| 488 | static char* process_string(const char *input, size_t len) { |
---|
| 489 | const char *input_ptr = input; |
---|
| 490 | char *output = (char*)PARSON_MALLOC((len + 1) * sizeof(char)); |
---|
| 491 | char *output_ptr = output; |
---|
| 492 | while ((*input_ptr != '\0') && (size_t)(input_ptr - input) < len) { |
---|
| 493 | if (*input_ptr == '\\') { |
---|
| 494 | input_ptr++; |
---|
| 495 | switch (*input_ptr) { |
---|
| 496 | case '\"': *output_ptr = '\"'; break; |
---|
| 497 | case '\\': *output_ptr = '\\'; break; |
---|
| 498 | case '/': *output_ptr = '/'; break; |
---|
| 499 | case 'b': *output_ptr = '\b'; break; |
---|
| 500 | case 'f': *output_ptr = '\f'; break; |
---|
| 501 | case 'n': *output_ptr = '\n'; break; |
---|
| 502 | case 'r': *output_ptr = '\r'; break; |
---|
| 503 | case 't': *output_ptr = '\t'; break; |
---|
| 504 | case 'u': |
---|
| 505 | if (parse_utf_16(&input_ptr, &output_ptr) == JSONFailure) |
---|
| 506 | goto error; |
---|
| 507 | break; |
---|
| 508 | default: |
---|
| 509 | goto error; |
---|
| 510 | } |
---|
| 511 | } else if ((unsigned char)*input_ptr < 0x20) { |
---|
| 512 | goto error; /* 0x00-0x19 are invalid characters for json string (http://www.ietf.org/rfc/rfc4627.txt) */ |
---|
| 513 | } else { |
---|
| 514 | *output_ptr = *input_ptr; |
---|
| 515 | } |
---|
| 516 | output_ptr++; |
---|
| 517 | input_ptr++; |
---|
| 518 | } |
---|
| 519 | *output_ptr = '\0'; |
---|
[5726a0d] | 520 | if (try_realloc((void**)&output, (size_t)(output_ptr-output) + 1) == JSONFailure) /* resize to new length */ |
---|
[782a6ee] | 521 | goto error; |
---|
| 522 | return output; |
---|
| 523 | error: |
---|
| 524 | free(output); |
---|
| 525 | return NULL; |
---|
| 526 | } |
---|
| 527 | |
---|
| 528 | /* Return processed contents of a string between quotes and |
---|
| 529 | skips passed argument to a matching quote. */ |
---|
| 530 | static const char * get_quoted_string(const char **string) { |
---|
| 531 | const char *string_start = *string; |
---|
| 532 | size_t string_len = 0; |
---|
| 533 | skip_quotes(string); |
---|
| 534 | if (**string == '\0') |
---|
| 535 | return NULL; |
---|
| 536 | string_len = *string - string_start - 2; /* length without quotes */ |
---|
| 537 | return process_string(string_start + 1, string_len); |
---|
| 538 | } |
---|
| 539 | |
---|
| 540 | static JSON_Value * parse_value(const char **string, size_t nesting) { |
---|
| 541 | if (nesting > MAX_NESTING) |
---|
| 542 | return NULL; |
---|
| 543 | SKIP_WHITESPACES(string); |
---|
| 544 | switch (**string) { |
---|
| 545 | case '{': |
---|
| 546 | return parse_object_value(string, nesting + 1); |
---|
| 547 | case '[': |
---|
| 548 | return parse_array_value(string, nesting + 1); |
---|
| 549 | case '\"': |
---|
| 550 | return parse_string_value(string); |
---|
| 551 | case 'f': case 't': |
---|
| 552 | return parse_boolean_value(string); |
---|
| 553 | case '-': |
---|
| 554 | case '0': case '1': case '2': case '3': case '4': |
---|
| 555 | case '5': case '6': case '7': case '8': case '9': |
---|
| 556 | return parse_number_value(string); |
---|
| 557 | case 'n': |
---|
| 558 | return parse_null_value(string); |
---|
| 559 | default: |
---|
| 560 | return NULL; |
---|
| 561 | } |
---|
| 562 | } |
---|
| 563 | |
---|
| 564 | static JSON_Value * parse_object_value(const char **string, size_t nesting) { |
---|
| 565 | JSON_Value *output_value = json_value_init_object(), *new_value = NULL; |
---|
| 566 | JSON_Object *output_object = json_value_get_object(output_value); |
---|
| 567 | const char *new_key = NULL; |
---|
| 568 | if (output_value == NULL) |
---|
| 569 | return NULL; |
---|
| 570 | SKIP_CHAR(string); |
---|
| 571 | SKIP_WHITESPACES(string); |
---|
| 572 | if (**string == '}') { /* empty object */ |
---|
| 573 | SKIP_CHAR(string); |
---|
| 574 | return output_value; |
---|
| 575 | } |
---|
| 576 | while (**string != '\0') { |
---|
| 577 | new_key = get_quoted_string(string); |
---|
| 578 | SKIP_WHITESPACES(string); |
---|
| 579 | if (new_key == NULL || **string != ':') { |
---|
| 580 | json_value_free(output_value); |
---|
| 581 | return NULL; |
---|
| 582 | } |
---|
| 583 | SKIP_CHAR(string); |
---|
| 584 | new_value = parse_value(string, nesting); |
---|
| 585 | if (new_value == NULL) { |
---|
| 586 | PARSON_FREE(new_key); |
---|
| 587 | json_value_free(output_value); |
---|
| 588 | return NULL; |
---|
| 589 | } |
---|
| 590 | if(json_object_add(output_object, new_key, new_value) == JSONFailure) { |
---|
| 591 | PARSON_FREE(new_key); |
---|
| 592 | PARSON_FREE(new_value); |
---|
| 593 | json_value_free(output_value); |
---|
| 594 | return NULL; |
---|
| 595 | } |
---|
| 596 | PARSON_FREE(new_key); |
---|
| 597 | SKIP_WHITESPACES(string); |
---|
| 598 | if (**string != ',') |
---|
| 599 | break; |
---|
| 600 | SKIP_CHAR(string); |
---|
| 601 | SKIP_WHITESPACES(string); |
---|
| 602 | } |
---|
| 603 | SKIP_WHITESPACES(string); |
---|
| 604 | if (**string != '}' || /* Trim object after parsing is over */ |
---|
| 605 | json_object_resize(output_object, json_object_get_count(output_object)) == JSONFailure) { |
---|
| 606 | json_value_free(output_value); |
---|
| 607 | return NULL; |
---|
| 608 | } |
---|
| 609 | SKIP_CHAR(string); |
---|
| 610 | return output_value; |
---|
| 611 | } |
---|
| 612 | |
---|
| 613 | static JSON_Value * parse_array_value(const char **string, size_t nesting) { |
---|
| 614 | JSON_Value *output_value = json_value_init_array(), *new_array_value = NULL; |
---|
| 615 | JSON_Array *output_array = json_value_get_array(output_value); |
---|
| 616 | if (!output_value) |
---|
| 617 | return NULL; |
---|
| 618 | SKIP_CHAR(string); |
---|
| 619 | SKIP_WHITESPACES(string); |
---|
| 620 | if (**string == ']') { /* empty array */ |
---|
| 621 | SKIP_CHAR(string); |
---|
| 622 | return output_value; |
---|
| 623 | } |
---|
| 624 | while (**string != '\0') { |
---|
| 625 | new_array_value = parse_value(string, nesting); |
---|
| 626 | if (!new_array_value) { |
---|
| 627 | json_value_free(output_value); |
---|
| 628 | return NULL; |
---|
| 629 | } |
---|
| 630 | if(json_array_add(output_array, new_array_value) == JSONFailure) { |
---|
| 631 | PARSON_FREE(new_array_value); |
---|
| 632 | json_value_free(output_value); |
---|
| 633 | return NULL; |
---|
| 634 | } |
---|
| 635 | SKIP_WHITESPACES(string); |
---|
| 636 | if (**string != ',') |
---|
| 637 | break; |
---|
| 638 | SKIP_CHAR(string); |
---|
| 639 | SKIP_WHITESPACES(string); |
---|
| 640 | } |
---|
| 641 | SKIP_WHITESPACES(string); |
---|
| 642 | if (**string != ']' || /* Trim array after parsing is over */ |
---|
| 643 | json_array_resize(output_array, json_array_get_count(output_array)) == JSONFailure) { |
---|
| 644 | json_value_free(output_value); |
---|
| 645 | return NULL; |
---|
| 646 | } |
---|
| 647 | SKIP_CHAR(string); |
---|
| 648 | return output_value; |
---|
| 649 | } |
---|
| 650 | |
---|
| 651 | static JSON_Value * parse_string_value(const char **string) { |
---|
| 652 | const char *new_string = get_quoted_string(string); |
---|
| 653 | if (!new_string) |
---|
| 654 | return NULL; |
---|
| 655 | return json_value_init_string_no_copy(new_string); |
---|
| 656 | } |
---|
| 657 | |
---|
| 658 | static JSON_Value * parse_boolean_value(const char **string) { |
---|
| 659 | size_t true_token_size = SIZEOF_TOKEN("true"); |
---|
| 660 | size_t false_token_size = SIZEOF_TOKEN("false"); |
---|
| 661 | if (strncmp("true", *string, true_token_size) == 0) { |
---|
| 662 | *string += true_token_size; |
---|
| 663 | return json_value_init_boolean(1); |
---|
| 664 | } else if (strncmp("false", *string, false_token_size) == 0) { |
---|
| 665 | *string += false_token_size; |
---|
| 666 | return json_value_init_boolean(0); |
---|
| 667 | } |
---|
| 668 | return NULL; |
---|
| 669 | } |
---|
| 670 | |
---|
| 671 | static JSON_Value * parse_number_value(const char **string) { |
---|
| 672 | char *end; |
---|
| 673 | double number = strtod(*string, &end); |
---|
| 674 | JSON_Value *output_value; |
---|
| 675 | if (is_decimal(*string, end - *string)) { |
---|
| 676 | *string = end; |
---|
| 677 | output_value = json_value_init_number(number); |
---|
| 678 | } else { |
---|
| 679 | output_value = NULL; |
---|
| 680 | } |
---|
| 681 | return output_value; |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | static JSON_Value * parse_null_value(const char **string) { |
---|
| 685 | size_t token_size = SIZEOF_TOKEN("null"); |
---|
| 686 | if (strncmp("null", *string, token_size) == 0) { |
---|
| 687 | *string += token_size; |
---|
| 688 | return json_value_init_null(); |
---|
| 689 | } |
---|
| 690 | return NULL; |
---|
| 691 | } |
---|
| 692 | |
---|
| 693 | /* Serialization */ |
---|
| 694 | static size_t json_serialization_size_r(const JSON_Value *value, char *buf) { |
---|
| 695 | size_t result_size = 0; |
---|
| 696 | const char *key = NULL; |
---|
| 697 | JSON_Value *temp_value = NULL; |
---|
| 698 | JSON_Array *array = NULL; |
---|
| 699 | JSON_Object *object = NULL; |
---|
| 700 | size_t i = 0, count = 0; |
---|
| 701 | double num = 0.0; |
---|
| 702 | switch (json_value_get_type(value)) { |
---|
| 703 | case JSONArray: |
---|
| 704 | array = json_value_get_array(value); |
---|
| 705 | count = json_array_get_count(array); |
---|
| 706 | result_size += 2; /* [ and ] brackets */ |
---|
| 707 | if (count > 0) |
---|
| 708 | result_size += count - 1; /* , between items */ |
---|
| 709 | for (i = 0; i < count; i++) { |
---|
| 710 | temp_value = json_array_get_value(array, i); |
---|
| 711 | result_size += json_serialization_size_r(temp_value, buf); |
---|
| 712 | } |
---|
| 713 | return result_size; |
---|
| 714 | case JSONObject: |
---|
| 715 | object = json_value_get_object(value); |
---|
| 716 | count = json_object_get_count(object); |
---|
| 717 | result_size += 2; /* { and } brackets */ |
---|
| 718 | if (count > 0) |
---|
| 719 | result_size += (count * 2) - 1; /* : between keys and values and , between items */ |
---|
| 720 | for (i = 0; i < count; i++) { |
---|
| 721 | key = json_object_get_name(object, i); |
---|
[5726a0d] | 722 | result_size += serialization_strlen(key) + 2; /* string and quotes */ |
---|
[782a6ee] | 723 | result_size += json_serialization_size_r(json_object_get_value(object, key), buf); |
---|
| 724 | } |
---|
| 725 | return result_size; |
---|
| 726 | case JSONString: |
---|
[5726a0d] | 727 | return serialization_strlen(json_value_get_string(value)) + 2; /* string and quotes */ |
---|
[782a6ee] | 728 | case JSONBoolean: |
---|
| 729 | if (json_value_get_boolean(value)) |
---|
| 730 | return 4; /* strlen("true"); */ |
---|
| 731 | else |
---|
| 732 | return 5; /* strlen("false"); */ |
---|
| 733 | case JSONNumber: |
---|
| 734 | num = json_value_get_number(value); |
---|
| 735 | if (num == ((double)(int)num) ) /* check if num is integer */ |
---|
| 736 | return (size_t)sprintf(buf, "%d", (int)num); |
---|
| 737 | return (size_t)sprintf(buf, DOUBLE_SERIALIZATION_FORMAT, num); |
---|
| 738 | case JSONNull: |
---|
| 739 | return 4; /* strlen("null"); */ |
---|
| 740 | case JSONError: |
---|
| 741 | return 0; |
---|
| 742 | default: |
---|
| 743 | return 0; |
---|
| 744 | } |
---|
| 745 | } |
---|
| 746 | |
---|
| 747 | char* json_serialize_to_buffer_r(const JSON_Value *value, char *buf) |
---|
| 748 | { |
---|
| 749 | const char *key = NULL, *string = NULL; |
---|
| 750 | JSON_Value *temp_value = NULL; |
---|
| 751 | JSON_Array *array = NULL; |
---|
| 752 | JSON_Object *object = NULL; |
---|
| 753 | size_t i = 0, count = 0; |
---|
| 754 | double num = 0.0; |
---|
| 755 | switch (json_value_get_type(value)) { |
---|
| 756 | case JSONArray: |
---|
| 757 | array = json_value_get_array(value); |
---|
| 758 | count = json_array_get_count(array); |
---|
| 759 | PRINT_AND_SKIP(buf, "["); |
---|
| 760 | for (i = 0; i < count; i++) { |
---|
| 761 | temp_value = json_array_get_value(array, i); |
---|
| 762 | buf = json_serialize_to_buffer_r(temp_value, buf); |
---|
[5726a0d] | 763 | if (buf == NULL) |
---|
| 764 | return NULL; |
---|
[782a6ee] | 765 | if (i < (count - 1)) |
---|
| 766 | PRINT_AND_SKIP(buf, ","); |
---|
| 767 | } |
---|
| 768 | PRINT_AND_SKIP(buf, "]"); |
---|
| 769 | return buf; |
---|
| 770 | case JSONObject: |
---|
| 771 | object = json_value_get_object(value); |
---|
| 772 | count = json_object_get_count(object); |
---|
| 773 | PRINT_AND_SKIP(buf, "{"); |
---|
| 774 | for (i = 0; i < count; i++) { |
---|
| 775 | key = json_object_get_name(object, i); |
---|
| 776 | buf = json_serialize_string(key, buf); |
---|
[5726a0d] | 777 | if (buf == NULL) |
---|
| 778 | return NULL; |
---|
[782a6ee] | 779 | PRINT_AND_SKIP(buf, ":"); |
---|
| 780 | temp_value = json_object_get_value(object, key); |
---|
| 781 | buf = json_serialize_to_buffer_r(temp_value, buf); |
---|
[5726a0d] | 782 | if (buf == NULL) |
---|
| 783 | return NULL; |
---|
[782a6ee] | 784 | if (i < (count - 1)) |
---|
| 785 | PRINT_AND_SKIP(buf, ","); |
---|
| 786 | } |
---|
| 787 | PRINT_AND_SKIP(buf, "}"); |
---|
| 788 | return buf; |
---|
| 789 | case JSONString: |
---|
| 790 | string = json_value_get_string(value); |
---|
| 791 | buf = json_serialize_string(string, buf); |
---|
| 792 | return buf; |
---|
| 793 | case JSONBoolean: |
---|
| 794 | if (json_value_get_boolean(value)) { |
---|
| 795 | PRINT_AND_SKIP(buf, "true"); |
---|
| 796 | } else { |
---|
| 797 | PRINT_AND_SKIP(buf, "false"); |
---|
| 798 | } |
---|
| 799 | return buf; |
---|
| 800 | case JSONNumber: |
---|
| 801 | num = json_value_get_number(value); |
---|
| 802 | if (num == ((double)(int)num)) { /* check if num is integer */ |
---|
| 803 | PRINTF_AND_SKIP(buf, "%d", (int)num); |
---|
| 804 | } else { |
---|
| 805 | PRINTF_AND_SKIP(buf, DOUBLE_SERIALIZATION_FORMAT, num); |
---|
| 806 | } |
---|
| 807 | return buf; |
---|
| 808 | case JSONNull: |
---|
| 809 | PRINT_AND_SKIP(buf, "null"); |
---|
| 810 | return buf; |
---|
| 811 | case JSONError: |
---|
| 812 | return NULL; |
---|
| 813 | default: |
---|
| 814 | return NULL; |
---|
| 815 | } |
---|
| 816 | } |
---|
| 817 | |
---|
| 818 | static char * json_serialize_string(const char *string, char *buf) { |
---|
| 819 | size_t i = 0, len = strlen(string); |
---|
| 820 | char c = '\0'; |
---|
| 821 | PRINT_AND_SKIP(buf, "\"") |
---|
| 822 | for (i = 0; i < len; i++) { |
---|
| 823 | c = string[i]; |
---|
| 824 | switch (c) { |
---|
| 825 | case '\"': PRINT_AND_SKIP(buf, "\\\""); break; |
---|
| 826 | case '\\': PRINT_AND_SKIP(buf, "\\\\"); break; |
---|
| 827 | case '\b': PRINT_AND_SKIP(buf, "\\b"); break; |
---|
| 828 | case '\f': PRINT_AND_SKIP(buf, "\\f"); break; |
---|
| 829 | case '\n': PRINT_AND_SKIP(buf, "\\n"); break; |
---|
| 830 | case '\r': PRINT_AND_SKIP(buf, "\\r"); break; |
---|
| 831 | case '\t': PRINT_AND_SKIP(buf, "\\t"); break; |
---|
| 832 | default: PRINTF_AND_SKIP(buf, "%c", c); break; |
---|
| 833 | } |
---|
| 834 | } |
---|
| 835 | PRINT_AND_SKIP(buf, "\""); |
---|
| 836 | return buf; |
---|
| 837 | } |
---|
| 838 | |
---|
| 839 | /* Parser API */ |
---|
| 840 | JSON_Value * json_parse_file(const char *filename) { |
---|
| 841 | char *file_contents = read_file(filename); |
---|
| 842 | JSON_Value *output_value = NULL; |
---|
[5726a0d] | 843 | if (file_contents == NULL) |
---|
[782a6ee] | 844 | return NULL; |
---|
| 845 | output_value = json_parse_string(file_contents); |
---|
| 846 | PARSON_FREE(file_contents); |
---|
| 847 | return output_value; |
---|
| 848 | } |
---|
| 849 | |
---|
| 850 | JSON_Value * json_parse_file_with_comments(const char *filename) { |
---|
| 851 | char *file_contents = read_file(filename); |
---|
| 852 | JSON_Value *output_value = NULL; |
---|
[5726a0d] | 853 | if (file_contents == NULL) |
---|
[782a6ee] | 854 | return NULL; |
---|
| 855 | output_value = json_parse_string_with_comments(file_contents); |
---|
| 856 | PARSON_FREE(file_contents); |
---|
| 857 | return output_value; |
---|
| 858 | } |
---|
| 859 | |
---|
[989f431] | 860 | JSON_Value * json_parse_first(const char *string, const char **end) { |
---|
| 861 | const char *pos; |
---|
| 862 | JSON_Value *ret; |
---|
| 863 | |
---|
[5726a0d] | 864 | if (string == NULL) |
---|
[782a6ee] | 865 | return NULL; |
---|
| 866 | SKIP_WHITESPACES(&string); |
---|
| 867 | if (*string != '{' && *string != '[') |
---|
| 868 | return NULL; |
---|
[989f431] | 869 | |
---|
| 870 | pos = string; |
---|
| 871 | ret = parse_value(&pos, 0); |
---|
| 872 | if (end) |
---|
| 873 | *end = pos; |
---|
| 874 | |
---|
| 875 | return ret; |
---|
| 876 | } |
---|
| 877 | |
---|
| 878 | JSON_Value * json_parse_string(const char *string) { |
---|
| 879 | return json_parse_first(string, NULL); |
---|
[782a6ee] | 880 | } |
---|
| 881 | |
---|
| 882 | JSON_Value * json_parse_string_with_comments(const char *string) { |
---|
| 883 | JSON_Value *result = NULL; |
---|
| 884 | char *string_mutable_copy = NULL, *string_mutable_copy_ptr = NULL; |
---|
| 885 | string_mutable_copy = parson_strdup(string); |
---|
[5726a0d] | 886 | if (string_mutable_copy == NULL) |
---|
[782a6ee] | 887 | return NULL; |
---|
| 888 | remove_comments(string_mutable_copy, "/*", "*/"); |
---|
| 889 | remove_comments(string_mutable_copy, "//", "\n"); |
---|
| 890 | string_mutable_copy_ptr = string_mutable_copy; |
---|
| 891 | SKIP_WHITESPACES(&string_mutable_copy_ptr); |
---|
| 892 | if (*string_mutable_copy_ptr != '{' && *string_mutable_copy_ptr != '[') { |
---|
| 893 | PARSON_FREE(string_mutable_copy); |
---|
| 894 | return NULL; |
---|
| 895 | } |
---|
| 896 | result = parse_value((const char**)&string_mutable_copy_ptr, 0); |
---|
| 897 | PARSON_FREE(string_mutable_copy); |
---|
| 898 | return result; |
---|
| 899 | } |
---|
| 900 | |
---|
| 901 | |
---|
| 902 | /* JSON Object API */ |
---|
| 903 | |
---|
| 904 | JSON_Value * json_object_get_value(const JSON_Object *object, const char *name) { |
---|
[5726a0d] | 905 | if (object == NULL || name == NULL) |
---|
| 906 | return NULL; |
---|
[782a6ee] | 907 | return json_object_nget_value(object, name, strlen(name)); |
---|
| 908 | } |
---|
| 909 | |
---|
| 910 | const char * json_object_get_string(const JSON_Object *object, const char *name) { |
---|
| 911 | return json_value_get_string(json_object_get_value(object, name)); |
---|
| 912 | } |
---|
| 913 | |
---|
| 914 | double json_object_get_number(const JSON_Object *object, const char *name) { |
---|
| 915 | return json_value_get_number(json_object_get_value(object, name)); |
---|
| 916 | } |
---|
| 917 | |
---|
| 918 | JSON_Object * json_object_get_object(const JSON_Object *object, const char *name) { |
---|
| 919 | return json_value_get_object(json_object_get_value(object, name)); |
---|
| 920 | } |
---|
| 921 | |
---|
| 922 | JSON_Array * json_object_get_array(const JSON_Object *object, const char *name) { |
---|
| 923 | return json_value_get_array(json_object_get_value(object, name)); |
---|
| 924 | } |
---|
| 925 | |
---|
| 926 | int json_object_get_boolean(const JSON_Object *object, const char *name) { |
---|
| 927 | return json_value_get_boolean(json_object_get_value(object, name)); |
---|
| 928 | } |
---|
| 929 | |
---|
| 930 | JSON_Value * json_object_dotget_value(const JSON_Object *object, const char *name) { |
---|
| 931 | const char *dot_position = strchr(name, '.'); |
---|
| 932 | if (!dot_position) |
---|
| 933 | return json_object_get_value(object, name); |
---|
| 934 | object = json_value_get_object(json_object_nget_value(object, name, dot_position - name)); |
---|
| 935 | return json_object_dotget_value(object, dot_position + 1); |
---|
| 936 | } |
---|
| 937 | |
---|
| 938 | const char * json_object_dotget_string(const JSON_Object *object, const char *name) { |
---|
| 939 | return json_value_get_string(json_object_dotget_value(object, name)); |
---|
| 940 | } |
---|
| 941 | |
---|
| 942 | double json_object_dotget_number(const JSON_Object *object, const char *name) { |
---|
| 943 | return json_value_get_number(json_object_dotget_value(object, name)); |
---|
| 944 | } |
---|
| 945 | |
---|
| 946 | JSON_Object * json_object_dotget_object(const JSON_Object *object, const char *name) { |
---|
| 947 | return json_value_get_object(json_object_dotget_value(object, name)); |
---|
| 948 | } |
---|
| 949 | |
---|
| 950 | JSON_Array * json_object_dotget_array(const JSON_Object *object, const char *name) { |
---|
| 951 | return json_value_get_array(json_object_dotget_value(object, name)); |
---|
| 952 | } |
---|
| 953 | |
---|
| 954 | int json_object_dotget_boolean(const JSON_Object *object, const char *name) { |
---|
| 955 | return json_value_get_boolean(json_object_dotget_value(object, name)); |
---|
| 956 | } |
---|
| 957 | |
---|
| 958 | size_t json_object_get_count(const JSON_Object *object) { |
---|
| 959 | return object ? object->count : 0; |
---|
| 960 | } |
---|
| 961 | |
---|
| 962 | const char * json_object_get_name(const JSON_Object *object, size_t index) { |
---|
| 963 | if (index >= json_object_get_count(object)) |
---|
| 964 | return NULL; |
---|
| 965 | return object->names[index]; |
---|
| 966 | } |
---|
| 967 | |
---|
[ee170a1] | 968 | int json_object_get_tuple(const JSON_Object *object, size_t index, |
---|
| 969 | const char **key, const JSON_Value **value) { |
---|
| 970 | if (index >= json_object_get_count(object)) |
---|
| 971 | return 0; |
---|
| 972 | *key = object->names[index]; |
---|
| 973 | *value = object->values[index]; |
---|
| 974 | return 1; |
---|
| 975 | } |
---|
| 976 | |
---|
[782a6ee] | 977 | /* JSON Array API */ |
---|
| 978 | JSON_Value * json_array_get_value(const JSON_Array *array, size_t index) { |
---|
| 979 | if (index >= json_array_get_count(array)) |
---|
| 980 | return NULL; |
---|
| 981 | return array->items[index]; |
---|
| 982 | } |
---|
| 983 | |
---|
| 984 | const char * json_array_get_string(const JSON_Array *array, size_t index) { |
---|
| 985 | return json_value_get_string(json_array_get_value(array, index)); |
---|
| 986 | } |
---|
| 987 | |
---|
| 988 | double json_array_get_number(const JSON_Array *array, size_t index) { |
---|
| 989 | return json_value_get_number(json_array_get_value(array, index)); |
---|
| 990 | } |
---|
| 991 | |
---|
| 992 | JSON_Object * json_array_get_object(const JSON_Array *array, size_t index) { |
---|
| 993 | return json_value_get_object(json_array_get_value(array, index)); |
---|
| 994 | } |
---|
| 995 | |
---|
| 996 | JSON_Array * json_array_get_array(const JSON_Array *array, size_t index) { |
---|
| 997 | return json_value_get_array(json_array_get_value(array, index)); |
---|
| 998 | } |
---|
| 999 | |
---|
| 1000 | int json_array_get_boolean(const JSON_Array *array, size_t index) { |
---|
| 1001 | return json_value_get_boolean(json_array_get_value(array, index)); |
---|
| 1002 | } |
---|
| 1003 | |
---|
| 1004 | size_t json_array_get_count(const JSON_Array *array) { |
---|
| 1005 | return array ? array->count : 0; |
---|
| 1006 | } |
---|
| 1007 | |
---|
| 1008 | /* JSON Value API */ |
---|
| 1009 | JSON_Value_Type json_value_get_type(const JSON_Value *value) { |
---|
| 1010 | return value ? value->type : JSONError; |
---|
| 1011 | } |
---|
| 1012 | |
---|
| 1013 | JSON_Object * json_value_get_object(const JSON_Value *value) { |
---|
| 1014 | return json_value_get_type(value) == JSONObject ? value->value.object : NULL; |
---|
| 1015 | } |
---|
| 1016 | |
---|
| 1017 | JSON_Array * json_value_get_array(const JSON_Value *value) { |
---|
| 1018 | return json_value_get_type(value) == JSONArray ? value->value.array : NULL; |
---|
| 1019 | } |
---|
| 1020 | |
---|
| 1021 | const char * json_value_get_string(const JSON_Value *value) { |
---|
| 1022 | return json_value_get_type(value) == JSONString ? value->value.string : NULL; |
---|
| 1023 | } |
---|
| 1024 | |
---|
| 1025 | double json_value_get_number(const JSON_Value *value) { |
---|
| 1026 | return json_value_get_type(value) == JSONNumber ? value->value.number : 0; |
---|
| 1027 | } |
---|
| 1028 | |
---|
| 1029 | int json_value_get_boolean(const JSON_Value *value) { |
---|
| 1030 | return json_value_get_type(value) == JSONBoolean ? value->value.boolean : -1; |
---|
| 1031 | } |
---|
| 1032 | |
---|
| 1033 | void json_value_free(JSON_Value *value) { |
---|
| 1034 | switch (json_value_get_type(value)) { |
---|
| 1035 | case JSONObject: |
---|
| 1036 | json_object_free(value->value.object); |
---|
| 1037 | break; |
---|
| 1038 | case JSONString: |
---|
| 1039 | if (value->value.string) { PARSON_FREE(value->value.string); } |
---|
| 1040 | break; |
---|
| 1041 | case JSONArray: |
---|
| 1042 | json_array_free(value->value.array); |
---|
| 1043 | break; |
---|
| 1044 | default: |
---|
| 1045 | break; |
---|
| 1046 | } |
---|
| 1047 | PARSON_FREE(value); |
---|
| 1048 | } |
---|
| 1049 | |
---|
| 1050 | JSON_Value * json_value_init_object(void) { |
---|
| 1051 | JSON_Value *new_value = (JSON_Value*)PARSON_MALLOC(sizeof(JSON_Value)); |
---|
| 1052 | if (!new_value) |
---|
| 1053 | return NULL; |
---|
| 1054 | new_value->type = JSONObject; |
---|
| 1055 | new_value->value.object = json_object_init(); |
---|
| 1056 | if (!new_value->value.object) { |
---|
| 1057 | PARSON_FREE(new_value); |
---|
| 1058 | return NULL; |
---|
| 1059 | } |
---|
| 1060 | return new_value; |
---|
| 1061 | } |
---|
| 1062 | |
---|
| 1063 | JSON_Value * json_value_init_array(void) { |
---|
| 1064 | JSON_Value *new_value = (JSON_Value*)PARSON_MALLOC(sizeof(JSON_Value)); |
---|
| 1065 | if (!new_value) |
---|
| 1066 | return NULL; |
---|
| 1067 | new_value->type = JSONArray; |
---|
| 1068 | new_value->value.array = json_array_init(); |
---|
| 1069 | if (!new_value->value.array) { |
---|
| 1070 | PARSON_FREE(new_value); |
---|
| 1071 | return NULL; |
---|
| 1072 | } |
---|
| 1073 | return new_value; |
---|
| 1074 | } |
---|
| 1075 | |
---|
| 1076 | JSON_Value * json_value_init_string(const char *string) { |
---|
[5726a0d] | 1077 | char *copy = NULL; |
---|
| 1078 | JSON_Value *value; |
---|
| 1079 | size_t string_len = 0; |
---|
| 1080 | if (string == NULL) |
---|
| 1081 | return NULL; |
---|
| 1082 | string_len = strlen(string); |
---|
| 1083 | if (!is_valid_utf8(string, string_len)) |
---|
[782a6ee] | 1084 | return NULL; |
---|
[5726a0d] | 1085 | copy = parson_strndup(string, string_len); |
---|
| 1086 | if (copy == NULL) |
---|
| 1087 | return NULL; |
---|
| 1088 | value = json_value_init_string_no_copy(copy); |
---|
| 1089 | if (value == NULL) |
---|
| 1090 | PARSON_FREE(copy); |
---|
| 1091 | return value; |
---|
[782a6ee] | 1092 | } |
---|
| 1093 | |
---|
| 1094 | JSON_Value * json_value_init_number(double number) { |
---|
| 1095 | JSON_Value *new_value = (JSON_Value*)PARSON_MALLOC(sizeof(JSON_Value)); |
---|
| 1096 | if (!new_value) |
---|
| 1097 | return NULL; |
---|
| 1098 | new_value->type = JSONNumber; |
---|
| 1099 | new_value->value.number = number; |
---|
| 1100 | return new_value; |
---|
| 1101 | } |
---|
| 1102 | |
---|
| 1103 | JSON_Value * json_value_init_boolean(int boolean) { |
---|
| 1104 | JSON_Value *new_value = (JSON_Value*)PARSON_MALLOC(sizeof(JSON_Value)); |
---|
| 1105 | if (!new_value) |
---|
| 1106 | return NULL; |
---|
| 1107 | new_value->type = JSONBoolean; |
---|
| 1108 | new_value->value.boolean = boolean ? 1 : 0; |
---|
| 1109 | return new_value; |
---|
| 1110 | } |
---|
| 1111 | |
---|
| 1112 | JSON_Value * json_value_init_null(void) { |
---|
| 1113 | JSON_Value *new_value = (JSON_Value*)PARSON_MALLOC(sizeof(JSON_Value)); |
---|
| 1114 | if (!new_value) |
---|
| 1115 | return NULL; |
---|
| 1116 | new_value->type = JSONNull; |
---|
| 1117 | return new_value; |
---|
| 1118 | } |
---|
| 1119 | |
---|
| 1120 | JSON_Value * json_value_deep_copy(const JSON_Value *value) { |
---|
| 1121 | size_t i = 0; |
---|
| 1122 | JSON_Value *return_value = NULL, *temp_value_copy = NULL, *temp_value = NULL; |
---|
| 1123 | const char *temp_string = NULL, *temp_string_copy = NULL, *temp_key = NULL; |
---|
| 1124 | JSON_Array *temp_array = NULL, *temp_array_copy = NULL; |
---|
| 1125 | JSON_Object *temp_object = NULL, *temp_object_copy = NULL; |
---|
| 1126 | |
---|
| 1127 | switch (json_value_get_type(value)) { |
---|
| 1128 | case JSONArray: |
---|
| 1129 | temp_array = json_value_get_array(value); |
---|
| 1130 | return_value = json_value_init_array(); |
---|
| 1131 | if (return_value == NULL) |
---|
| 1132 | return NULL; |
---|
| 1133 | temp_array_copy = json_value_get_array(return_value); |
---|
| 1134 | for (i = 0; i < json_array_get_count(temp_array); i++) { |
---|
| 1135 | temp_value = json_array_get_value(temp_array, i); |
---|
| 1136 | temp_value_copy = json_value_deep_copy(temp_value); |
---|
| 1137 | if (temp_value_copy == NULL) { |
---|
| 1138 | json_value_free(return_value); |
---|
| 1139 | return NULL; |
---|
| 1140 | } |
---|
| 1141 | if (json_array_add(temp_array_copy, temp_value_copy) == JSONFailure) { |
---|
| 1142 | json_value_free(return_value); |
---|
| 1143 | json_value_free(temp_value_copy); |
---|
| 1144 | return NULL; |
---|
| 1145 | } |
---|
| 1146 | } |
---|
| 1147 | return return_value; |
---|
| 1148 | case JSONObject: |
---|
| 1149 | temp_object = json_value_get_object(value); |
---|
| 1150 | return_value = json_value_init_object(); |
---|
| 1151 | if (return_value == NULL) |
---|
| 1152 | return NULL; |
---|
| 1153 | temp_object_copy = json_value_get_object(return_value); |
---|
| 1154 | for (i = 0; i < json_object_get_count(temp_object); i++) { |
---|
| 1155 | temp_key = json_object_get_name(temp_object, i); |
---|
| 1156 | temp_value = json_object_get_value(temp_object, temp_key); |
---|
| 1157 | temp_value_copy = json_value_deep_copy(temp_value); |
---|
| 1158 | if (temp_value_copy == NULL) { |
---|
| 1159 | json_value_free(return_value); |
---|
| 1160 | return NULL; |
---|
| 1161 | } |
---|
| 1162 | if (json_object_add(temp_object_copy, temp_key, temp_value_copy) == JSONFailure) { |
---|
| 1163 | json_value_free(return_value); |
---|
| 1164 | json_value_free(temp_value_copy); |
---|
| 1165 | return NULL; |
---|
| 1166 | } |
---|
| 1167 | } |
---|
| 1168 | return return_value; |
---|
| 1169 | case JSONBoolean: |
---|
| 1170 | return json_value_init_boolean(json_value_get_boolean(value)); |
---|
| 1171 | case JSONNumber: |
---|
| 1172 | return json_value_init_number(json_value_get_number(value)); |
---|
| 1173 | case JSONString: |
---|
| 1174 | temp_string = json_value_get_string(value); |
---|
| 1175 | temp_string_copy = parson_strdup(temp_string); |
---|
| 1176 | if (temp_string_copy == NULL) |
---|
| 1177 | return NULL; |
---|
[5726a0d] | 1178 | return_value = json_value_init_string_no_copy(temp_string_copy); |
---|
| 1179 | if (return_value == NULL) |
---|
| 1180 | PARSON_FREE(temp_string_copy); |
---|
| 1181 | return return_value; |
---|
[782a6ee] | 1182 | case JSONNull: |
---|
| 1183 | return json_value_init_null(); |
---|
| 1184 | case JSONError: |
---|
| 1185 | return NULL; |
---|
| 1186 | default: |
---|
| 1187 | return NULL; |
---|
| 1188 | } |
---|
| 1189 | } |
---|
| 1190 | |
---|
| 1191 | size_t json_serialization_size(const JSON_Value *value) { |
---|
| 1192 | char buf[1100]; /* recursively allocating buffer on stack is a bad idea, so let's do it only once */ |
---|
| 1193 | return json_serialization_size_r(value, buf) + 1; |
---|
| 1194 | } |
---|
| 1195 | |
---|
| 1196 | JSON_Status json_serialize_to_buffer(const JSON_Value *value, char *buf, size_t buf_size_in_bytes) { |
---|
| 1197 | char *serialization_result = NULL; |
---|
| 1198 | size_t needed_size_in_bytes = json_serialization_size(value); |
---|
| 1199 | if (buf_size_in_bytes < needed_size_in_bytes) { |
---|
| 1200 | return JSONFailure; |
---|
| 1201 | } |
---|
| 1202 | serialization_result = json_serialize_to_buffer_r(value, buf); |
---|
| 1203 | if(serialization_result == NULL) |
---|
| 1204 | return JSONFailure; |
---|
| 1205 | return JSONSuccess; |
---|
| 1206 | } |
---|
| 1207 | |
---|
| 1208 | JSON_Status json_serialize_to_file(const JSON_Value *value, const char *filename) { |
---|
| 1209 | JSON_Status return_code = JSONSuccess; |
---|
| 1210 | FILE *fp = NULL; |
---|
| 1211 | char *serialized_string = json_serialize_to_string(value); |
---|
| 1212 | if (serialized_string == NULL) { |
---|
| 1213 | return JSONFailure; |
---|
| 1214 | } |
---|
| 1215 | fp = fopen (filename, "w"); |
---|
| 1216 | if (fp != NULL) { |
---|
| 1217 | if (fputs (serialized_string, fp) == EOF) { |
---|
| 1218 | return_code = JSONFailure; |
---|
| 1219 | } |
---|
| 1220 | if (fclose (fp) == EOF) { |
---|
| 1221 | return_code = JSONFailure; |
---|
| 1222 | } |
---|
| 1223 | } |
---|
| 1224 | json_free_serialized_string(serialized_string); |
---|
| 1225 | return return_code; |
---|
| 1226 | } |
---|
| 1227 | |
---|
| 1228 | char * json_serialize_to_string(const JSON_Value *value) { |
---|
| 1229 | JSON_Status serialization_result = JSONFailure; |
---|
| 1230 | size_t buf_size_bytes = json_serialization_size(value); |
---|
| 1231 | char *buf = (char*)PARSON_MALLOC(buf_size_bytes); |
---|
| 1232 | if (buf == NULL) |
---|
| 1233 | return NULL; |
---|
| 1234 | serialization_result = json_serialize_to_buffer(value, buf, buf_size_bytes); |
---|
| 1235 | if (serialization_result == JSONFailure) { |
---|
| 1236 | json_free_serialized_string(buf); |
---|
| 1237 | return NULL; |
---|
| 1238 | } |
---|
| 1239 | return buf; |
---|
| 1240 | } |
---|
| 1241 | |
---|
| 1242 | void json_free_serialized_string(char *string) { |
---|
| 1243 | PARSON_FREE(string); |
---|
| 1244 | } |
---|
| 1245 | |
---|
| 1246 | JSON_Status json_array_remove(JSON_Array *array, size_t ix) { |
---|
| 1247 | size_t last_element_ix = 0; |
---|
| 1248 | if (array == NULL || ix >= json_array_get_count(array)) { |
---|
| 1249 | return JSONFailure; |
---|
| 1250 | } |
---|
| 1251 | last_element_ix = json_array_get_count(array) - 1; |
---|
| 1252 | json_value_free(json_array_get_value(array, ix)); |
---|
| 1253 | array->count -= 1; |
---|
| 1254 | if (ix != last_element_ix) /* Replace value with one from the end of array */ |
---|
| 1255 | array->items[ix] = json_array_get_value(array, last_element_ix); |
---|
| 1256 | return JSONSuccess; |
---|
| 1257 | } |
---|
| 1258 | |
---|
| 1259 | JSON_Status json_array_replace_value(JSON_Array *array, size_t ix, JSON_Value *value) { |
---|
| 1260 | if (array == NULL || value == NULL || ix >= json_array_get_count(array)) { |
---|
| 1261 | return JSONFailure; |
---|
| 1262 | } |
---|
| 1263 | json_value_free(json_array_get_value(array, ix)); |
---|
| 1264 | array->items[ix] = value; |
---|
| 1265 | return JSONSuccess; |
---|
| 1266 | } |
---|
| 1267 | |
---|
| 1268 | JSON_Status json_array_replace_string(JSON_Array *array, size_t i, const char* string) { |
---|
[5726a0d] | 1269 | JSON_Value *value = json_value_init_string(string); |
---|
| 1270 | if (value == NULL) |
---|
| 1271 | return JSONFailure; |
---|
| 1272 | if (json_array_replace_value(array, i, value) == JSONFailure) { |
---|
| 1273 | json_value_free(value); |
---|
| 1274 | return JSONFailure; |
---|
| 1275 | } |
---|
| 1276 | return JSONSuccess; |
---|
[782a6ee] | 1277 | } |
---|
| 1278 | |
---|
| 1279 | JSON_Status json_array_replace_number(JSON_Array *array, size_t i, double number) { |
---|
[5726a0d] | 1280 | JSON_Value *value = json_value_init_number(number); |
---|
| 1281 | if (value == NULL) |
---|
| 1282 | return JSONFailure; |
---|
| 1283 | if (json_array_replace_value(array, i, value) == JSONFailure) { |
---|
| 1284 | json_value_free(value); |
---|
| 1285 | return JSONFailure; |
---|
| 1286 | } |
---|
| 1287 | return JSONSuccess; |
---|
[782a6ee] | 1288 | } |
---|
| 1289 | |
---|
| 1290 | JSON_Status json_array_replace_boolean(JSON_Array *array, size_t i, int boolean) { |
---|
[5726a0d] | 1291 | JSON_Value *value = json_value_init_boolean(boolean); |
---|
| 1292 | if (value == NULL) |
---|
| 1293 | return JSONFailure; |
---|
| 1294 | if (json_array_replace_value(array, i, value) == JSONFailure) { |
---|
| 1295 | json_value_free(value); |
---|
| 1296 | return JSONFailure; |
---|
| 1297 | } |
---|
| 1298 | return JSONSuccess; |
---|
[782a6ee] | 1299 | } |
---|
| 1300 | |
---|
| 1301 | JSON_Status json_array_replace_null(JSON_Array *array, size_t i) { |
---|
[5726a0d] | 1302 | JSON_Value *value = json_value_init_null(); |
---|
| 1303 | if (value == NULL) |
---|
| 1304 | return JSONFailure; |
---|
| 1305 | if (json_array_replace_value(array, i, value) == JSONFailure) { |
---|
| 1306 | json_value_free(value); |
---|
| 1307 | return JSONFailure; |
---|
| 1308 | } |
---|
| 1309 | return JSONSuccess; |
---|
[782a6ee] | 1310 | } |
---|
| 1311 | |
---|
| 1312 | JSON_Status json_array_clear(JSON_Array *array) { |
---|
| 1313 | size_t i = 0; |
---|
| 1314 | if (array == NULL) |
---|
| 1315 | return JSONFailure; |
---|
| 1316 | for (i = 0; i < json_array_get_count(array); i++) { |
---|
| 1317 | json_value_free(json_array_get_value(array, i)); |
---|
| 1318 | } |
---|
| 1319 | array->count = 0; |
---|
| 1320 | return JSONSuccess; |
---|
| 1321 | } |
---|
| 1322 | |
---|
| 1323 | JSON_Status json_array_append_value(JSON_Array *array, JSON_Value *value) { |
---|
| 1324 | if (array == NULL || value == NULL) |
---|
| 1325 | return JSONFailure; |
---|
| 1326 | return json_array_add(array, value); |
---|
| 1327 | } |
---|
| 1328 | |
---|
| 1329 | JSON_Status json_array_append_string(JSON_Array *array, const char *string) { |
---|
[5726a0d] | 1330 | JSON_Value *value = json_value_init_string(string); |
---|
| 1331 | if (value == NULL) |
---|
| 1332 | return JSONFailure; |
---|
| 1333 | if (json_array_append_value(array, value) == JSONFailure) { |
---|
| 1334 | json_value_free(value); |
---|
| 1335 | return JSONFailure; |
---|
| 1336 | } |
---|
| 1337 | return JSONSuccess; |
---|
[782a6ee] | 1338 | } |
---|
| 1339 | |
---|
| 1340 | JSON_Status json_array_append_number(JSON_Array *array, double number) { |
---|
[5726a0d] | 1341 | JSON_Value *value = json_value_init_number(number); |
---|
| 1342 | if (value == NULL) |
---|
| 1343 | return JSONFailure; |
---|
| 1344 | if (json_array_append_value(array, value) == JSONFailure) { |
---|
| 1345 | json_value_free(value); |
---|
| 1346 | return JSONFailure; |
---|
| 1347 | } |
---|
| 1348 | return JSONSuccess; |
---|
[782a6ee] | 1349 | } |
---|
| 1350 | |
---|
| 1351 | JSON_Status json_array_append_boolean(JSON_Array *array, int boolean) { |
---|
[5726a0d] | 1352 | JSON_Value *value = json_value_init_boolean(boolean); |
---|
| 1353 | if (value == NULL) |
---|
| 1354 | return JSONFailure; |
---|
| 1355 | if (json_array_append_value(array, value) == JSONFailure) { |
---|
| 1356 | json_value_free(value); |
---|
| 1357 | return JSONFailure; |
---|
| 1358 | } |
---|
| 1359 | return JSONSuccess; |
---|
[782a6ee] | 1360 | } |
---|
| 1361 | |
---|
| 1362 | JSON_Status json_array_append_null(JSON_Array *array) { |
---|
[5726a0d] | 1363 | JSON_Value *value = json_value_init_null(); |
---|
| 1364 | if (value == NULL) |
---|
| 1365 | return JSONFailure; |
---|
| 1366 | if (json_array_append_value(array, value) == JSONFailure) { |
---|
| 1367 | json_value_free(value); |
---|
| 1368 | return JSONFailure; |
---|
| 1369 | } |
---|
| 1370 | return JSONSuccess; |
---|
[782a6ee] | 1371 | } |
---|
| 1372 | |
---|
| 1373 | JSON_Status json_object_set_value(JSON_Object *object, const char *name, JSON_Value *value) { |
---|
| 1374 | size_t i = 0; |
---|
| 1375 | JSON_Value *old_value; |
---|
[5726a0d] | 1376 | if (object == NULL || name == NULL || value == NULL) |
---|
[782a6ee] | 1377 | return JSONFailure; |
---|
| 1378 | old_value = json_object_get_value(object, name); |
---|
| 1379 | if (old_value != NULL) { /* free and overwrite old value */ |
---|
| 1380 | json_value_free(old_value); |
---|
| 1381 | for (i = 0; i < json_object_get_count(object); i++) { |
---|
| 1382 | if (strcmp(object->names[i], name) == 0) { |
---|
| 1383 | object->values[i] = value; |
---|
| 1384 | return JSONSuccess; |
---|
| 1385 | } |
---|
| 1386 | } |
---|
| 1387 | } |
---|
[5726a0d] | 1388 | /* add new key value pair */ |
---|
| 1389 | return json_object_add(object, name, value); |
---|
[782a6ee] | 1390 | } |
---|
| 1391 | |
---|
| 1392 | JSON_Status json_object_set_string(JSON_Object *object, const char *name, const char *string) { |
---|
| 1393 | return json_object_set_value(object, name, json_value_init_string(string)); |
---|
| 1394 | } |
---|
| 1395 | |
---|
| 1396 | JSON_Status json_object_set_number(JSON_Object *object, const char *name, double number) { |
---|
| 1397 | return json_object_set_value(object, name, json_value_init_number(number)); |
---|
| 1398 | } |
---|
| 1399 | |
---|
| 1400 | JSON_Status json_object_set_boolean(JSON_Object *object, const char *name, int boolean) { |
---|
| 1401 | return json_object_set_value(object, name, json_value_init_boolean(boolean)); |
---|
| 1402 | } |
---|
| 1403 | |
---|
| 1404 | JSON_Status json_object_set_null(JSON_Object *object, const char *name) { |
---|
| 1405 | return json_object_set_value(object, name, json_value_init_null()); |
---|
| 1406 | } |
---|
| 1407 | |
---|
| 1408 | JSON_Status json_object_dotset_value(JSON_Object *object, const char *name, JSON_Value *value) { |
---|
[5726a0d] | 1409 | const char *dot_pos = NULL; |
---|
[782a6ee] | 1410 | const char *current_name = NULL; |
---|
| 1411 | JSON_Object *temp_obj = NULL; |
---|
| 1412 | JSON_Value *new_value = NULL; |
---|
[5726a0d] | 1413 | if (value == NULL || name == NULL || value == NULL) |
---|
[782a6ee] | 1414 | return JSONFailure; |
---|
[5726a0d] | 1415 | dot_pos = strchr(name, '.'); |
---|
| 1416 | if (dot_pos == NULL) { |
---|
[782a6ee] | 1417 | return json_object_set_value(object, name, value); |
---|
| 1418 | } else { |
---|
| 1419 | current_name = parson_strndup(name, dot_pos - name); |
---|
| 1420 | temp_obj = json_object_get_object(object, current_name); |
---|
| 1421 | if (temp_obj == NULL) { |
---|
| 1422 | new_value = json_value_init_object(); |
---|
| 1423 | if (new_value == NULL) { |
---|
| 1424 | PARSON_FREE(current_name); |
---|
| 1425 | return JSONFailure; |
---|
| 1426 | } |
---|
| 1427 | if (json_object_add(object, current_name, new_value) == JSONFailure) { |
---|
| 1428 | json_value_free(new_value); |
---|
| 1429 | PARSON_FREE(current_name); |
---|
| 1430 | return JSONFailure; |
---|
| 1431 | } |
---|
| 1432 | temp_obj = json_object_get_object(object, current_name); |
---|
| 1433 | } |
---|
| 1434 | PARSON_FREE(current_name); |
---|
| 1435 | return json_object_dotset_value(temp_obj, dot_pos + 1, value); |
---|
| 1436 | } |
---|
| 1437 | } |
---|
| 1438 | |
---|
| 1439 | JSON_Status json_object_dotset_string(JSON_Object *object, const char *name, const char *string) { |
---|
[5726a0d] | 1440 | JSON_Value *value = json_value_init_string(string); |
---|
| 1441 | if (value == NULL) |
---|
| 1442 | return JSONFailure; |
---|
| 1443 | if (json_object_dotset_value(object, name, value) == JSONFailure) { |
---|
| 1444 | json_value_free(value); |
---|
| 1445 | return JSONFailure; |
---|
| 1446 | } |
---|
| 1447 | return JSONSuccess; |
---|
[782a6ee] | 1448 | } |
---|
| 1449 | |
---|
| 1450 | JSON_Status json_object_dotset_number(JSON_Object *object, const char *name, double number) { |
---|
[5726a0d] | 1451 | JSON_Value *value = json_value_init_number(number); |
---|
| 1452 | if (value == NULL) |
---|
| 1453 | return JSONFailure; |
---|
| 1454 | if (json_object_dotset_value(object, name, value) == JSONFailure) { |
---|
| 1455 | json_value_free(value); |
---|
| 1456 | return JSONFailure; |
---|
| 1457 | } |
---|
| 1458 | return JSONSuccess; |
---|
[782a6ee] | 1459 | } |
---|
| 1460 | |
---|
| 1461 | JSON_Status json_object_dotset_boolean(JSON_Object *object, const char *name, int boolean) { |
---|
[5726a0d] | 1462 | JSON_Value *value = json_value_init_boolean(boolean); |
---|
| 1463 | if (value == NULL) |
---|
| 1464 | return JSONFailure; |
---|
| 1465 | if (json_object_dotset_value(object, name, value) == JSONFailure) { |
---|
| 1466 | json_value_free(value); |
---|
| 1467 | return JSONFailure; |
---|
| 1468 | } |
---|
| 1469 | return JSONSuccess; |
---|
[782a6ee] | 1470 | } |
---|
| 1471 | |
---|
| 1472 | JSON_Status json_object_dotset_null(JSON_Object *object, const char *name) { |
---|
[5726a0d] | 1473 | JSON_Value *value = json_value_init_null(); |
---|
| 1474 | if (value == NULL) |
---|
| 1475 | return JSONFailure; |
---|
| 1476 | if (json_object_dotset_value(object, name, value) == JSONFailure) { |
---|
| 1477 | json_value_free(value); |
---|
| 1478 | return JSONFailure; |
---|
| 1479 | } |
---|
| 1480 | return JSONSuccess; |
---|
[782a6ee] | 1481 | } |
---|
| 1482 | |
---|
| 1483 | JSON_Status json_object_remove(JSON_Object *object, const char *name) { |
---|
| 1484 | size_t i = 0, last_item_index = 0; |
---|
| 1485 | if (object == NULL || json_object_get_value(object, name) == NULL) |
---|
| 1486 | return JSONFailure; |
---|
| 1487 | last_item_index = json_object_get_count(object) - 1; |
---|
| 1488 | for (i = 0; i < json_object_get_count(object); i++) { |
---|
| 1489 | if (strcmp(object->names[i], name) == 0) { |
---|
| 1490 | PARSON_FREE(object->names[i]); |
---|
| 1491 | json_value_free(object->values[i]); |
---|
| 1492 | if (i != last_item_index) { /* Replace key value pair with one from the end */ |
---|
| 1493 | object->names[i] = object->names[last_item_index]; |
---|
| 1494 | object->values[i] = object->values[last_item_index]; |
---|
| 1495 | } |
---|
| 1496 | object->count -= 1; |
---|
| 1497 | return JSONSuccess; |
---|
| 1498 | } |
---|
| 1499 | } |
---|
| 1500 | return JSONFailure; /* No execution path should end here */ |
---|
| 1501 | } |
---|
| 1502 | |
---|
| 1503 | JSON_Status json_object_dotremove(JSON_Object *object, const char *name) { |
---|
| 1504 | const char *dot_pos = strchr(name, '.'); |
---|
| 1505 | const char *current_name = NULL; |
---|
| 1506 | JSON_Object *temp_obj = NULL; |
---|
| 1507 | if (dot_pos == NULL) { |
---|
| 1508 | return json_object_remove(object, name); |
---|
| 1509 | } else { |
---|
| 1510 | current_name = parson_strndup(name, dot_pos - name); |
---|
| 1511 | temp_obj = json_object_get_object(object, current_name); |
---|
| 1512 | if (temp_obj == NULL) { |
---|
| 1513 | PARSON_FREE(current_name); |
---|
| 1514 | return JSONFailure; |
---|
| 1515 | } |
---|
| 1516 | PARSON_FREE(current_name); |
---|
| 1517 | return json_object_dotremove(temp_obj, dot_pos + 1); |
---|
| 1518 | } |
---|
| 1519 | } |
---|
| 1520 | |
---|
| 1521 | JSON_Status json_object_clear(JSON_Object *object) { |
---|
| 1522 | size_t i = 0; |
---|
| 1523 | if (object == NULL) { |
---|
| 1524 | return JSONFailure; |
---|
| 1525 | } |
---|
| 1526 | for (i = 0; i < json_object_get_count(object); i++) { |
---|
| 1527 | PARSON_FREE(object->names[i]); |
---|
| 1528 | json_value_free(object->values[i]); |
---|
| 1529 | } |
---|
| 1530 | object->count = 0; |
---|
| 1531 | return JSONSuccess; |
---|
| 1532 | } |
---|
| 1533 | |
---|
| 1534 | JSON_Status json_validate(const JSON_Value *schema, const JSON_Value *value) { |
---|
| 1535 | JSON_Value *temp_schema_value = NULL, *temp_value = NULL; |
---|
| 1536 | JSON_Array *schema_array = NULL, *value_array = NULL; |
---|
| 1537 | JSON_Object *schema_object = NULL, *value_object = NULL; |
---|
| 1538 | JSON_Value_Type schema_type = JSONError, value_type = JSONError; |
---|
| 1539 | const char *key = NULL; |
---|
| 1540 | size_t i = 0, count = 0; |
---|
| 1541 | if (schema == NULL || value == NULL) |
---|
| 1542 | return JSONFailure; |
---|
| 1543 | schema_type = json_value_get_type(schema); |
---|
| 1544 | value_type = json_value_get_type(value); |
---|
| 1545 | if (schema_type != value_type && schema_type != JSONNull) /* null represents all values */ |
---|
| 1546 | return JSONFailure; |
---|
| 1547 | switch (schema_type) { |
---|
| 1548 | case JSONArray: |
---|
| 1549 | schema_array = json_value_get_array(schema); |
---|
| 1550 | value_array = json_value_get_array(value); |
---|
| 1551 | count = json_array_get_count(schema_array); |
---|
| 1552 | if (count == 0) |
---|
| 1553 | return JSONSuccess; /* Empty array allows all types */ |
---|
| 1554 | /* Get first value from array, rest is ignored */ |
---|
| 1555 | temp_schema_value = json_array_get_value(schema_array, 0); |
---|
| 1556 | for (i = 0; i < json_array_get_count(value_array); i++) { |
---|
| 1557 | temp_value = json_array_get_value(value_array, i); |
---|
| 1558 | if (json_validate(temp_schema_value, temp_value) == 0) { |
---|
| 1559 | return JSONFailure; |
---|
| 1560 | } |
---|
| 1561 | } |
---|
| 1562 | return JSONSuccess; |
---|
| 1563 | case JSONObject: |
---|
| 1564 | schema_object = json_value_get_object(schema); |
---|
| 1565 | value_object = json_value_get_object(value); |
---|
| 1566 | count = json_object_get_count(schema_object); |
---|
| 1567 | if (count == 0) |
---|
| 1568 | return JSONSuccess; /* Empty object allows all objects */ |
---|
| 1569 | else if (json_object_get_count(value_object) < count) |
---|
| 1570 | return JSONFailure; /* Tested object mustn't have less name-value pairs than schema */ |
---|
| 1571 | for (i = 0; i < count; i++) { |
---|
| 1572 | key = json_object_get_name(schema_object, i); |
---|
| 1573 | temp_schema_value = json_object_get_value(schema_object, key); |
---|
| 1574 | temp_value = json_object_get_value(value_object, key); |
---|
| 1575 | if (temp_value == NULL) |
---|
| 1576 | return JSONFailure; |
---|
| 1577 | if (json_validate(temp_schema_value, temp_value) == JSONFailure) |
---|
| 1578 | return JSONFailure; |
---|
| 1579 | } |
---|
| 1580 | return JSONSuccess; |
---|
| 1581 | case JSONString: case JSONNumber: case JSONBoolean: case JSONNull: |
---|
| 1582 | return JSONSuccess; /* equality already tested before switch */ |
---|
| 1583 | case JSONError: default: |
---|
| 1584 | return JSONFailure; |
---|
| 1585 | } |
---|
| 1586 | } |
---|
| 1587 | |
---|
| 1588 | JSON_Status json_value_equals(const JSON_Value *a, const JSON_Value *b) { |
---|
| 1589 | JSON_Object *a_object = NULL, *b_object = NULL; |
---|
| 1590 | JSON_Array *a_array = NULL, *b_array = NULL; |
---|
| 1591 | const char *a_string = NULL, *b_string = NULL; |
---|
| 1592 | const char *key = NULL; |
---|
| 1593 | size_t a_count = 0, b_count = 0, i = 0; |
---|
| 1594 | JSON_Value_Type a_type, b_type; |
---|
| 1595 | a_type = json_value_get_type(a); |
---|
| 1596 | b_type = json_value_get_type(b); |
---|
| 1597 | if (a_type != b_type) { |
---|
| 1598 | return 0; |
---|
| 1599 | } |
---|
| 1600 | switch (a_type) { |
---|
| 1601 | case JSONArray: |
---|
| 1602 | a_array = json_value_get_array(a); |
---|
| 1603 | b_array = json_value_get_array(b); |
---|
| 1604 | a_count = json_array_get_count(a_array); |
---|
| 1605 | b_count = json_array_get_count(b_array); |
---|
| 1606 | if (a_count != b_count) { |
---|
| 1607 | return 0; |
---|
| 1608 | } |
---|
| 1609 | for (i = 0; i < a_count; i++) { |
---|
| 1610 | if (!json_value_equals(json_array_get_value(a_array, i), |
---|
| 1611 | json_array_get_value(b_array, i))) { |
---|
| 1612 | return 0; |
---|
| 1613 | } |
---|
| 1614 | } |
---|
| 1615 | return 1; |
---|
| 1616 | case JSONObject: |
---|
| 1617 | a_object = json_value_get_object(a); |
---|
| 1618 | b_object = json_value_get_object(b); |
---|
| 1619 | a_count = json_object_get_count(a_object); |
---|
| 1620 | b_count = json_object_get_count(b_object); |
---|
| 1621 | if (a_count != b_count) { |
---|
| 1622 | return 0; |
---|
| 1623 | } |
---|
| 1624 | for (i = 0; i < a_count; i++) { |
---|
| 1625 | key = json_object_get_name(a_object, i); |
---|
| 1626 | if (!json_value_equals(json_object_get_value(a_object, key), |
---|
| 1627 | json_object_get_value(b_object, key))) { |
---|
| 1628 | return 0; |
---|
| 1629 | } |
---|
| 1630 | } |
---|
| 1631 | return 1; |
---|
| 1632 | case JSONString: |
---|
| 1633 | a_string = json_value_get_string(a); |
---|
| 1634 | b_string = json_value_get_string(b); |
---|
| 1635 | return strcmp(a_string, b_string) == 0; |
---|
| 1636 | case JSONBoolean: |
---|
| 1637 | return json_value_get_boolean(a) == json_value_get_boolean(b); |
---|
| 1638 | case JSONNumber: |
---|
| 1639 | return fabs(json_value_get_number(a) - json_value_get_number(b)) < 0.000001; /* EPSILON */ |
---|
| 1640 | case JSONError: |
---|
| 1641 | return 1; |
---|
| 1642 | case JSONNull: |
---|
| 1643 | return 1; |
---|
| 1644 | default: |
---|
| 1645 | return 1; |
---|
| 1646 | } |
---|
| 1647 | } |
---|
| 1648 | |
---|
| 1649 | JSON_Value_Type json_type(const JSON_Value *value) { |
---|
| 1650 | return json_value_get_type(value); |
---|
| 1651 | } |
---|
| 1652 | |
---|
| 1653 | JSON_Object * json_object (const JSON_Value *value) { |
---|
| 1654 | return json_value_get_object(value); |
---|
| 1655 | } |
---|
| 1656 | |
---|
| 1657 | JSON_Array * json_array (const JSON_Value *value) { |
---|
| 1658 | return json_value_get_array(value); |
---|
| 1659 | } |
---|
| 1660 | |
---|
| 1661 | const char * json_string (const JSON_Value *value) { |
---|
| 1662 | return json_value_get_string(value); |
---|
| 1663 | } |
---|
| 1664 | |
---|
| 1665 | double json_number (const JSON_Value *value) { |
---|
| 1666 | return json_value_get_number(value); |
---|
| 1667 | } |
---|
| 1668 | |
---|
| 1669 | int json_boolean(const JSON_Value *value) { |
---|
| 1670 | return json_value_get_boolean(value); |
---|
| 1671 | } |
---|