1/* 2 Copyright (c) 2009 Dave Gamble 3 Copyright (c) 2015-2021 The Khronos Group Inc. 4 Copyright (c) 2015-2021 Valve Corporation 5 Copyright (c) 2015-2021 LunarG, Inc. 6 7 Permission is hereby granted, free of charge, to any person obtaining a copy 8 of this software and associated documentation files (the "Software"), to deal 9 in the Software without restriction, including without limitation the rights 10 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 copies of the Software, and to permit persons to whom the Software is 12 furnished to do so, subject to the following conditions: 13 14 The above copyright notice and this permission notice shall be included in 15 all copies or substantial portions of the Software. 16 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 THE SOFTWARE. 24*/ 25 26#pragma once 27 28#include <stdint.h> 29 30#include <vulkan/vulkan_core.h> 31 32/* cJSON Types: */ 33#define cJSON_False 0 34#define cJSON_True 1 35#define cJSON_NULL 2 36#define cJSON_Number 3 37#define cJSON_String 4 38#define cJSON_Array 5 39#define cJSON_Object 6 40 41#define cJSON_IsReference 256 42#define cJSON_StringIsConst 512 43 44/* The cJSON structure: */ 45typedef struct cJSON { 46 struct cJSON *next, *prev; /* next/prev allow you to walk array/object 47 chains. Alternatively, use 48 GetArraySize/GetArrayItem/GetObjectItem */ 49 struct cJSON *child; /* An array or object item will have a child pointer 50 pointing to a chain of the items in the 51 array/object. */ 52 53 int type; /* The type of the item, as above. */ 54 55 char *valuestring; /* The item's string, if type==cJSON_String */ 56 int valueint; /* The item's number, if type==cJSON_Number */ 57 double valuedouble; /* The item's number, if type==cJSON_Number */ 58 59 char *string; /* The item's name string, if this item is the child of, or is 60 in the list of subitems of an object. */ 61 /* pointer to the allocation callbacks to use */ 62 VkAllocationCallbacks *pAllocator; 63} cJSON; 64 65/* Render a cJSON entity to text for transfer/storage. Free the char* when 66 * finished. */ 67char *loader_cJSON_Print(cJSON *item); 68/* Render a cJSON entity to text for transfer/storage without any formatting. 69 * Free the char* when finished. */ 70char *loader_cJSON_PrintUnformatted(cJSON *item); 71/* Delete a cJSON entity and all subentities. */ 72void loader_cJSON_Delete(cJSON *c); 73 74/* Returns the number of items in an array (or object). */ 75int loader_cJSON_GetArraySize(cJSON *array); 76/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. 77 */ 78cJSON *loader_cJSON_GetArrayItem(cJSON *array, int item); 79/* Get item "string" from object. Case insensitive. */ 80cJSON *loader_cJSON_GetObjectItem(cJSON *object, const char *string); 81 82/* When assigning an integer value, it needs to be propagated to valuedouble 83 * too. */ 84#define cJSON_SetIntValue(object, val) ((object) ? (object)->valueint = (object)->valuedouble = (val) : (val)) 85#define cJSON_SetNumberValue(object, val) ((object) ? (object)->valueint = (object)->valuedouble = (val) : (val)) 86 87// Helper functions to using JSON 88 89struct loader_instance; 90struct loader_string_list; 91 92// Read a JSON file into a buffer. 93// 94// @return - A pointer to a cJSON object representing the JSON parse tree. 95// This returned buffer should be freed by caller. 96VkResult loader_get_json(const struct loader_instance *inst, const char *filename, cJSON **json); 97 98// Given a cJSON object, find the string associated with the key and puts an pre-allocated string into out_string. 99// Length is given by out_str_len, and this function truncates the string with a null terminator if it the provided space isn't 100// large enough. 101VkResult loader_parse_json_string_to_existing_str(const struct loader_instance *inst, cJSON *object, const char *key, 102 size_t out_str_len, char *out_string); 103 104// Given a cJSON object, find the string associated with the key and puts an allocated string into out_string. 105// It is the callers responsibility to free out_string. 106VkResult loader_parse_json_string(cJSON *object, const char *key, char **out_string); 107 108// Given a cJSON object, find the array of strings associated with they key and writes the count into out_count and data into 109// out_array_of_strings. It is the callers responsibility to free out_array_of_strings. 110VkResult loader_parse_json_array_of_strings(const struct loader_instance *inst, cJSON *object, const char *key, 111 struct loader_string_list *string_list); 112