Azure IoT / serializer

A modelling and serializer library for Microsoft Azure IoTHub client applications

Dependents:   sht15_remote_monitoring f767zi_mqtt remote_monitoring simplesample_amqp ... more

This library implements a serializer library to be used in projects involving Microsoft Azure IoT Hub connectivity. The code is replicated from https://github.com/Azure/azure-iot-sdks

jsonencoder.c@11:b1327861f5e0, 2016-04-24 (annotated)

Committer:
AzureIoTClient
Date:
Sun Apr 24 16:40:59 2016 -0700
Revision:
11:b1327861f5e0
Parent:
10:c2aee3965a83
Child:
13:16e88f0cfa5f
1.0.5

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AzureIoTClient 0:1f9b2707ec7d 1 // Copyright (c) Microsoft. All rights reserved.
AzureIoTClient 0:1f9b2707ec7d 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
AzureIoTClient 0:1f9b2707ec7d 3
AzureIoTClient 0:1f9b2707ec7d 4 #include <stdlib.h>
AzureIoTClient 0:1f9b2707ec7d 5 #ifdef _CRTDBG_MAP_ALLOC
AzureIoTClient 0:1f9b2707ec7d 6 #include <crtdbg.h>
AzureIoTClient 0:1f9b2707ec7d 7 #endif
Azure.IoT Build 10:c2aee3965a83 8 #include "azure_c_shared_utility/gballoc.h"
AzureIoTClient 0:1f9b2707ec7d 9
AzureIoTClient 0:1f9b2707ec7d 10 #include "jsonencoder.h"
Azure.IoT Build 10:c2aee3965a83 11 #include "azure_c_shared_utility/crt_abstractions.h"
Azure.IoT Build 10:c2aee3965a83 12 #include "azure_c_shared_utility/iot_logging.h"
Azure.IoT Build 10:c2aee3965a83 13 #include "azure_c_shared_utility/strings.h"
AzureIoTClient 0:1f9b2707ec7d 14
AzureIoTClient 0:1f9b2707ec7d 15 #ifdef _MSC_VER
AzureIoTClient 0:1f9b2707ec7d 16 #pragma warning(disable: 4701) /* potentially uninitialized local variable 'result' used */ /* the scanner cannot track variable "i" and link it to childCount*/
AzureIoTClient 0:1f9b2707ec7d 17 #endif
AzureIoTClient 0:1f9b2707ec7d 18
AzureIoTClient 0:1f9b2707ec7d 19 DEFINE_ENUM_STRINGS(JSON_ENCODER_TOSTRING_RESULT, JSON_ENCODER_TOSTRING_RESULT_VALUES);
AzureIoTClient 0:1f9b2707ec7d 20 DEFINE_ENUM_STRINGS(JSON_ENCODER_RESULT, JSON_ENCODER_RESULT_VALUES);
AzureIoTClient 0:1f9b2707ec7d 21
AzureIoTClient 0:1f9b2707ec7d 22 JSON_ENCODER_RESULT JSONEncoder_EncodeTree(MULTITREE_HANDLE treeHandle, STRING_HANDLE destination, JSON_ENCODER_TOSTRING_FUNC toStringFunc)
AzureIoTClient 0:1f9b2707ec7d 23 {
AzureIoTClient 0:1f9b2707ec7d 24 JSON_ENCODER_RESULT result;
AzureIoTClient 0:1f9b2707ec7d 25
AzureIoTClient 0:1f9b2707ec7d 26 size_t childCount;
AzureIoTClient 0:1f9b2707ec7d 27
AzureIoTClient 0:1f9b2707ec7d 28 /* Codes_SRS_JSON_ENCODER_99_032:[If any of the arguments passed to JSONEncoder_EncodeTree is NULL then JSON_ENCODER_INVALID_ARG shall be returned.] */
AzureIoTClient 0:1f9b2707ec7d 29 if ((treeHandle == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 30 (destination == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 31 (toStringFunc == NULL))
AzureIoTClient 0:1f9b2707ec7d 32 {
AzureIoTClient 0:1f9b2707ec7d 33 result = JSON_ENCODER_INVALID_ARG;
AzureIoTClient 11:b1327861f5e0 34 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 35 }
AzureIoTClient 0:1f9b2707ec7d 36 /*Codes_SRS_JSON_ENCODER_99_035:[ JSON encoder shall inquire the number of child nodes (further called childCount) of the current node (given by parameter treeHandle.]*/
AzureIoTClient 0:1f9b2707ec7d 37 else if (MultiTree_GetChildCount(treeHandle, &childCount) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 38 {
AzureIoTClient 0:1f9b2707ec7d 39 result = JSON_ENCODER_MULTITREE_ERROR;
AzureIoTClient 11:b1327861f5e0 40 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 41 }
AzureIoTClient 0:1f9b2707ec7d 42 else
AzureIoTClient 0:1f9b2707ec7d 43 {
AzureIoTClient 0:1f9b2707ec7d 44 size_t i;
AzureIoTClient 0:1f9b2707ec7d 45 /*Codes_SRS_JSON_ENCODER_99_036:[ The string "{" shall be added to the output;]*/
AzureIoTClient 0:1f9b2707ec7d 46 if (STRING_concat(destination, "{") != 0)
AzureIoTClient 0:1f9b2707ec7d 47 {
AzureIoTClient 0:1f9b2707ec7d 48 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 49 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 50 }
AzureIoTClient 0:1f9b2707ec7d 51 else
AzureIoTClient 0:1f9b2707ec7d 52 {
AzureIoTClient 0:1f9b2707ec7d 53 result = JSON_ENCODER_OK;
AzureIoTClient 0:1f9b2707ec7d 54 for (i = 0; (i < childCount) && (result == JSON_ENCODER_OK); i++)
AzureIoTClient 0:1f9b2707ec7d 55 {
AzureIoTClient 0:1f9b2707ec7d 56 MULTITREE_HANDLE childTreeHandle;
AzureIoTClient 0:1f9b2707ec7d 57
AzureIoTClient 0:1f9b2707ec7d 58 if ((i > 0) &&
AzureIoTClient 0:1f9b2707ec7d 59 (STRING_concat(destination, ", ") != 0))
AzureIoTClient 0:1f9b2707ec7d 60 {
AzureIoTClient 0:1f9b2707ec7d 61 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 62 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 63 }
AzureIoTClient 0:1f9b2707ec7d 64 else if (STRING_concat(destination, "\"") != 0)
AzureIoTClient 0:1f9b2707ec7d 65 {
AzureIoTClient 0:1f9b2707ec7d 66 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 67 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 68 }
AzureIoTClient 0:1f9b2707ec7d 69 else
AzureIoTClient 0:1f9b2707ec7d 70 {
AzureIoTClient 0:1f9b2707ec7d 71 STRING_HANDLE name = STRING_new();
AzureIoTClient 0:1f9b2707ec7d 72 if (name == NULL)
AzureIoTClient 0:1f9b2707ec7d 73 {
AzureIoTClient 0:1f9b2707ec7d 74 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 75 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 76 }
AzureIoTClient 0:1f9b2707ec7d 77 else
AzureIoTClient 0:1f9b2707ec7d 78 {
AzureIoTClient 0:1f9b2707ec7d 79 if (MultiTree_GetChild(treeHandle, i, &childTreeHandle) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 80 {
AzureIoTClient 0:1f9b2707ec7d 81 result = JSON_ENCODER_MULTITREE_ERROR;
AzureIoTClient 11:b1327861f5e0 82 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 83 }
AzureIoTClient 0:1f9b2707ec7d 84 else if (MultiTree_GetName(childTreeHandle, name) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 85 {
AzureIoTClient 0:1f9b2707ec7d 86 result = JSON_ENCODER_MULTITREE_ERROR;
AzureIoTClient 11:b1327861f5e0 87 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 88 }
AzureIoTClient 0:1f9b2707ec7d 89 else if (STRING_concat_with_STRING(destination, name) != 0)
AzureIoTClient 0:1f9b2707ec7d 90 {
AzureIoTClient 0:1f9b2707ec7d 91 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 92 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 93 }
AzureIoTClient 0:1f9b2707ec7d 94 else if (STRING_concat(destination, "\":") != 0)
AzureIoTClient 0:1f9b2707ec7d 95 {
AzureIoTClient 0:1f9b2707ec7d 96 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 97 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 98 }
AzureIoTClient 0:1f9b2707ec7d 99 else
AzureIoTClient 0:1f9b2707ec7d 100 {
AzureIoTClient 0:1f9b2707ec7d 101 size_t innerChildCount;
AzureIoTClient 0:1f9b2707ec7d 102 if (MultiTree_GetChildCount(childTreeHandle, &innerChildCount) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 103 {
AzureIoTClient 0:1f9b2707ec7d 104 result = JSON_ENCODER_MULTITREE_ERROR;
AzureIoTClient 11:b1327861f5e0 105 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 106 }
AzureIoTClient 0:1f9b2707ec7d 107 else
AzureIoTClient 0:1f9b2707ec7d 108 {
AzureIoTClient 0:1f9b2707ec7d 109 if (innerChildCount > 0)
AzureIoTClient 0:1f9b2707ec7d 110 {
AzureIoTClient 0:1f9b2707ec7d 111 STRING_HANDLE child = STRING_new();
AzureIoTClient 0:1f9b2707ec7d 112 if (child == NULL)
AzureIoTClient 0:1f9b2707ec7d 113 {
AzureIoTClient 0:1f9b2707ec7d 114 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 115 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 116 }
AzureIoTClient 0:1f9b2707ec7d 117 else
AzureIoTClient 0:1f9b2707ec7d 118 {
AzureIoTClient 0:1f9b2707ec7d 119 if ((result = JSONEncoder_EncodeTree(childTreeHandle, child, toStringFunc)) != JSON_ENCODER_OK)
AzureIoTClient 0:1f9b2707ec7d 120 {
AzureIoTClient 11:b1327861f5e0 121 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 122 }
AzureIoTClient 0:1f9b2707ec7d 123 else if (STRING_concat_with_STRING(destination, child)!=0)
AzureIoTClient 0:1f9b2707ec7d 124 {
AzureIoTClient 0:1f9b2707ec7d 125 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 126 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 127 }
AzureIoTClient 0:1f9b2707ec7d 128 STRING_delete(child);
AzureIoTClient 0:1f9b2707ec7d 129 }
AzureIoTClient 0:1f9b2707ec7d 130 }
AzureIoTClient 0:1f9b2707ec7d 131 else
AzureIoTClient 0:1f9b2707ec7d 132 {
AzureIoTClient 0:1f9b2707ec7d 133 const void* value;
AzureIoTClient 0:1f9b2707ec7d 134 if (MultiTree_GetValue(childTreeHandle, &value) != MULTITREE_OK)
AzureIoTClient 0:1f9b2707ec7d 135 {
AzureIoTClient 0:1f9b2707ec7d 136 result = JSON_ENCODER_MULTITREE_ERROR;
AzureIoTClient 11:b1327861f5e0 137 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 138
AzureIoTClient 0:1f9b2707ec7d 139 }
AzureIoTClient 0:1f9b2707ec7d 140 else
AzureIoTClient 0:1f9b2707ec7d 141 {
AzureIoTClient 0:1f9b2707ec7d 142 STRING_HANDLE childValue = STRING_new();
AzureIoTClient 0:1f9b2707ec7d 143 if (childValue == NULL)
AzureIoTClient 0:1f9b2707ec7d 144 {
AzureIoTClient 0:1f9b2707ec7d 145 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 146 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 147 }
AzureIoTClient 0:1f9b2707ec7d 148 else
AzureIoTClient 0:1f9b2707ec7d 149 {
AzureIoTClient 0:1f9b2707ec7d 150 if (toStringFunc(childValue, value) != JSON_ENCODER_TOSTRING_OK)
AzureIoTClient 0:1f9b2707ec7d 151 {
AzureIoTClient 0:1f9b2707ec7d 152 result = JSON_ENCODER_TOSTRING_FUNCTION_ERROR;
AzureIoTClient 11:b1327861f5e0 153 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 154 }
AzureIoTClient 0:1f9b2707ec7d 155 else if (STRING_concat_with_STRING(destination, childValue)!=0)
AzureIoTClient 0:1f9b2707ec7d 156 {
AzureIoTClient 0:1f9b2707ec7d 157 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 158 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 159 }
AzureIoTClient 0:1f9b2707ec7d 160 else
AzureIoTClient 0:1f9b2707ec7d 161 {
AzureIoTClient 0:1f9b2707ec7d 162 /*do nothing, result = JSON_ENCODER_OK is set above at the beginning of the FOR loop*/
AzureIoTClient 0:1f9b2707ec7d 163 }
AzureIoTClient 0:1f9b2707ec7d 164 STRING_delete(childValue);
AzureIoTClient 0:1f9b2707ec7d 165 }
AzureIoTClient 0:1f9b2707ec7d 166 }
AzureIoTClient 0:1f9b2707ec7d 167 }
AzureIoTClient 0:1f9b2707ec7d 168 }
AzureIoTClient 0:1f9b2707ec7d 169 }
AzureIoTClient 0:1f9b2707ec7d 170 STRING_delete(name);
AzureIoTClient 0:1f9b2707ec7d 171 }
AzureIoTClient 0:1f9b2707ec7d 172 }
AzureIoTClient 0:1f9b2707ec7d 173 }
AzureIoTClient 0:1f9b2707ec7d 174
AzureIoTClient 0:1f9b2707ec7d 175 if ((i == childCount) && (result == JSON_ENCODER_OK))
AzureIoTClient 0:1f9b2707ec7d 176 {
AzureIoTClient 0:1f9b2707ec7d 177 if (STRING_concat(destination, "}") != 0)
AzureIoTClient 0:1f9b2707ec7d 178 {
AzureIoTClient 0:1f9b2707ec7d 179 result = JSON_ENCODER_ERROR;
AzureIoTClient 11:b1327861f5e0 180 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 181 }
AzureIoTClient 0:1f9b2707ec7d 182 else
AzureIoTClient 0:1f9b2707ec7d 183 {
AzureIoTClient 0:1f9b2707ec7d 184 /* Codes_SRS_JSON_ENCODER_99_031:[On success, JSONEncoder_EncodeTree shall return JSON_ENCODER_OK.] */
AzureIoTClient 0:1f9b2707ec7d 185 result = JSON_ENCODER_OK;
AzureIoTClient 0:1f9b2707ec7d 186 }
AzureIoTClient 0:1f9b2707ec7d 187 }
AzureIoTClient 0:1f9b2707ec7d 188 }
AzureIoTClient 0:1f9b2707ec7d 189 }
AzureIoTClient 0:1f9b2707ec7d 190
AzureIoTClient 0:1f9b2707ec7d 191 return result;
AzureIoTClient 0:1f9b2707ec7d 192 #ifdef _MSC_VER
AzureIoTClient 0:1f9b2707ec7d 193 #pragma warning(disable: 4701) /* potentially uninitialized local variable 'result' used */ /* the scanner cannot track variable "i" and link it to childCount*/
AzureIoTClient 0:1f9b2707ec7d 194 #endif
AzureIoTClient 0:1f9b2707ec7d 195 }
AzureIoTClient 0:1f9b2707ec7d 196
AzureIoTClient 0:1f9b2707ec7d 197 JSON_ENCODER_TOSTRING_RESULT JSONEncoder_CharPtr_ToString(STRING_HANDLE destination, const void* value)
AzureIoTClient 0:1f9b2707ec7d 198 {
AzureIoTClient 0:1f9b2707ec7d 199 JSON_ENCODER_TOSTRING_RESULT result;
AzureIoTClient 0:1f9b2707ec7d 200
AzureIoTClient 0:1f9b2707ec7d 201 /*Coes_SRS_JSON_ENCODER_99_047:[ JSONEncoder_CharPtr_ToString shall return JSON_ENCODER_TOSTRING_INVALID_ARG if destination or value parameters passed to it are NULL.]*/
AzureIoTClient 0:1f9b2707ec7d 202 if ((destination == NULL) ||
AzureIoTClient 0:1f9b2707ec7d 203 (value == NULL))
AzureIoTClient 0:1f9b2707ec7d 204 {
AzureIoTClient 0:1f9b2707ec7d 205 result = JSON_ENCODER_TOSTRING_INVALID_ARG;
AzureIoTClient 11:b1327861f5e0 206 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_TOSTRING_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 207 }
AzureIoTClient 0:1f9b2707ec7d 208 /*Codes_SRS_JSON_ENCODER_99_048:[ JSONEncoder_CharPtr_ToString shall use strcpy_s to copy from value to destination.]*/
AzureIoTClient 0:1f9b2707ec7d 209 else if (STRING_concat(destination, (const char*)value) != 0)
AzureIoTClient 0:1f9b2707ec7d 210 {
AzureIoTClient 0:1f9b2707ec7d 211 /*Codes_SRS_JSON_ENCODER_99_049:[ If strcpy_s fails then JSONEncoder_CharPtr_ToString shall return JSON_ENCODER_TOSTRING_ERROR.]*/
AzureIoTClient 0:1f9b2707ec7d 212 result = JSON_ENCODER_TOSTRING_ERROR;
AzureIoTClient 11:b1327861f5e0 213 LogError("(result = %s)", ENUM_TO_STRING(JSON_ENCODER_TOSTRING_RESULT, result));
AzureIoTClient 0:1f9b2707ec7d 214 }
AzureIoTClient 0:1f9b2707ec7d 215 else
AzureIoTClient 0:1f9b2707ec7d 216 {
AzureIoTClient 0:1f9b2707ec7d 217 /*Codes_SRS_JSON_ENCODER_99_050:[ If strcpy_s doesn't fail, then JSONEncoder_CharPtr_ToString shall return JSON_ENCODER_TOSTRING_OK]*/
AzureIoTClient 0:1f9b2707ec7d 218 result = JSON_ENCODER_TOSTRING_OK;
AzureIoTClient 0:1f9b2707ec7d 219 }
AzureIoTClient 0:1f9b2707ec7d 220
AzureIoTClient 0:1f9b2707ec7d 221 return result;
AzureIoTClient 0:1f9b2707ec7d 222 }