iot_water_monitor_v2
Dependencies: easy-connect-v16 Watchdog FP MQTTPacket RecordType-v-16 watersenor_and_temp_code
JSON/Json.cpp@57:898fcb6692cd, 2018-04-03 (annotated)
- Committer:
- DuyLionTran
- Date:
- Tue Apr 03 17:03:01 2018 +0000
- Revision:
- 57:898fcb6692cd
- Parent:
- 43:dcde0e66874a
; * version 2.9.8 03-04-2018 Minor changes. Time frame updated to IBM Watson every 60s
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
DuyLionTran | 43:dcde0e66874a | 1 | /* Json.cpp */ |
DuyLionTran | 43:dcde0e66874a | 2 | /* Original Author: Faheem Inayat |
DuyLionTran | 43:dcde0e66874a | 3 | * Created by "Night Crue" Team @ TechShop San Jose, CA |
DuyLionTran | 43:dcde0e66874a | 4 | * |
DuyLionTran | 43:dcde0e66874a | 5 | * MIT License |
DuyLionTran | 43:dcde0e66874a | 6 | * |
DuyLionTran | 43:dcde0e66874a | 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
DuyLionTran | 43:dcde0e66874a | 8 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
DuyLionTran | 43:dcde0e66874a | 9 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
DuyLionTran | 43:dcde0e66874a | 10 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
DuyLionTran | 43:dcde0e66874a | 11 | * furnished to do so, subject to the following conditions: |
DuyLionTran | 43:dcde0e66874a | 12 | * |
DuyLionTran | 43:dcde0e66874a | 13 | * The above copyright notice and this permission notice shall be included in all copies or |
DuyLionTran | 43:dcde0e66874a | 14 | * substantial portions of the Software. |
DuyLionTran | 43:dcde0e66874a | 15 | * |
DuyLionTran | 43:dcde0e66874a | 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
DuyLionTran | 43:dcde0e66874a | 17 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
DuyLionTran | 43:dcde0e66874a | 18 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
DuyLionTran | 43:dcde0e66874a | 19 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
DuyLionTran | 43:dcde0e66874a | 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
DuyLionTran | 43:dcde0e66874a | 21 | */ |
DuyLionTran | 43:dcde0e66874a | 22 | |
DuyLionTran | 43:dcde0e66874a | 23 | #include "Json.h" |
DuyLionTran | 43:dcde0e66874a | 24 | |
DuyLionTran | 43:dcde0e66874a | 25 | Json::Json ( const char * jsonString, size_t length, unsigned int maxTokens ) |
DuyLionTran | 43:dcde0e66874a | 26 | : maxTokenCount ( maxTokens ), source ( jsonString ), sourceLength ( length ) |
DuyLionTran | 43:dcde0e66874a | 27 | { |
DuyLionTran | 43:dcde0e66874a | 28 | jsmn_parser parser; |
DuyLionTran | 43:dcde0e66874a | 29 | tokens = new jsmntok_t [ maxTokenCount ]; |
DuyLionTran | 43:dcde0e66874a | 30 | |
DuyLionTran | 43:dcde0e66874a | 31 | jsmn_init ( &parser ); |
DuyLionTran | 43:dcde0e66874a | 32 | tokenCount = jsmn_parse ( &parser, jsonString, length, tokens, maxTokenCount ); |
DuyLionTran | 43:dcde0e66874a | 33 | } |
DuyLionTran | 43:dcde0e66874a | 34 | |
DuyLionTran | 43:dcde0e66874a | 35 | Json::Json ( const Json & ) |
DuyLionTran | 43:dcde0e66874a | 36 | : maxTokenCount ( 0 ), source ( NULL ), sourceLength ( 0 ) |
DuyLionTran | 43:dcde0e66874a | 37 | { |
DuyLionTran | 43:dcde0e66874a | 38 | tokenCount = 0; |
DuyLionTran | 43:dcde0e66874a | 39 | tokens = NULL; |
DuyLionTran | 43:dcde0e66874a | 40 | } |
DuyLionTran | 43:dcde0e66874a | 41 | |
DuyLionTran | 43:dcde0e66874a | 42 | Json::~Json () |
DuyLionTran | 43:dcde0e66874a | 43 | { |
DuyLionTran | 43:dcde0e66874a | 44 | delete [] tokens; |
DuyLionTran | 43:dcde0e66874a | 45 | } |
DuyLionTran | 43:dcde0e66874a | 46 | |
DuyLionTran | 43:dcde0e66874a | 47 | int Json::findKeyIndex ( const char * key, const int &startingAt ) const |
DuyLionTran | 43:dcde0e66874a | 48 | { |
DuyLionTran | 43:dcde0e66874a | 49 | int retVal = -1; |
DuyLionTran | 43:dcde0e66874a | 50 | |
DuyLionTran | 43:dcde0e66874a | 51 | int i = startingAt + 1; |
DuyLionTran | 43:dcde0e66874a | 52 | if ( i < 0 ) { |
DuyLionTran | 43:dcde0e66874a | 53 | i = 0; |
DuyLionTran | 43:dcde0e66874a | 54 | } |
DuyLionTran | 43:dcde0e66874a | 55 | |
DuyLionTran | 43:dcde0e66874a | 56 | for ( ; i < tokenCount; i++ ) |
DuyLionTran | 43:dcde0e66874a | 57 | { |
DuyLionTran | 43:dcde0e66874a | 58 | jsmntok_t t = tokens [ i ]; |
DuyLionTran | 43:dcde0e66874a | 59 | |
DuyLionTran | 43:dcde0e66874a | 60 | if ( t.type == JSMN_KEY ) |
DuyLionTran | 43:dcde0e66874a | 61 | { |
DuyLionTran | 43:dcde0e66874a | 62 | size_t keyLength = (size_t) ( t.end - t.start ); |
DuyLionTran | 43:dcde0e66874a | 63 | if ( ( strlen ( key ) == keyLength ) && ( strncmp ( source + t.start, key, keyLength ) == 0 ) ) |
DuyLionTran | 43:dcde0e66874a | 64 | { |
DuyLionTran | 43:dcde0e66874a | 65 | retVal = i; |
DuyLionTran | 43:dcde0e66874a | 66 | break; |
DuyLionTran | 43:dcde0e66874a | 67 | } |
DuyLionTran | 43:dcde0e66874a | 68 | } |
DuyLionTran | 43:dcde0e66874a | 69 | } |
DuyLionTran | 43:dcde0e66874a | 70 | |
DuyLionTran | 43:dcde0e66874a | 71 | return retVal; |
DuyLionTran | 43:dcde0e66874a | 72 | } |
DuyLionTran | 43:dcde0e66874a | 73 | |
DuyLionTran | 43:dcde0e66874a | 74 | int Json::findKeyIndexIn ( const char * key, const int &parentIndex ) const |
DuyLionTran | 43:dcde0e66874a | 75 | { |
DuyLionTran | 43:dcde0e66874a | 76 | int retVal = -1; |
DuyLionTran | 43:dcde0e66874a | 77 | |
DuyLionTran | 43:dcde0e66874a | 78 | if ( isValidToken ( parentIndex ) ) |
DuyLionTran | 43:dcde0e66874a | 79 | { |
DuyLionTran | 43:dcde0e66874a | 80 | for ( int i = parentIndex + 1; i < tokenCount; i++ ) |
DuyLionTran | 43:dcde0e66874a | 81 | { |
DuyLionTran | 43:dcde0e66874a | 82 | jsmntok_t t = tokens [ i ]; |
DuyLionTran | 43:dcde0e66874a | 83 | |
DuyLionTran | 43:dcde0e66874a | 84 | if ( t.end >= tokens [ parentIndex ].end ) |
DuyLionTran | 43:dcde0e66874a | 85 | { |
DuyLionTran | 43:dcde0e66874a | 86 | break; |
DuyLionTran | 43:dcde0e66874a | 87 | } |
DuyLionTran | 43:dcde0e66874a | 88 | |
DuyLionTran | 43:dcde0e66874a | 89 | if ( ( t.type == JSMN_KEY ) && ( t.parent == parentIndex ) ) |
DuyLionTran | 43:dcde0e66874a | 90 | { |
DuyLionTran | 43:dcde0e66874a | 91 | size_t keyLength = (size_t) ( t.end - t.start ); |
DuyLionTran | 43:dcde0e66874a | 92 | if ( ( strlen ( key ) == keyLength ) && ( strncmp ( source + t.start, key, keyLength ) == 0 ) ) |
DuyLionTran | 43:dcde0e66874a | 93 | { |
DuyLionTran | 43:dcde0e66874a | 94 | retVal = i; |
DuyLionTran | 43:dcde0e66874a | 95 | break; |
DuyLionTran | 43:dcde0e66874a | 96 | } |
DuyLionTran | 43:dcde0e66874a | 97 | } |
DuyLionTran | 43:dcde0e66874a | 98 | } |
DuyLionTran | 43:dcde0e66874a | 99 | } |
DuyLionTran | 43:dcde0e66874a | 100 | |
DuyLionTran | 43:dcde0e66874a | 101 | return retVal; |
DuyLionTran | 43:dcde0e66874a | 102 | } |
DuyLionTran | 43:dcde0e66874a | 103 | |
DuyLionTran | 43:dcde0e66874a | 104 | int Json::findChildIndexOf ( const int &parentIndex, const int &startingAt ) const |
DuyLionTran | 43:dcde0e66874a | 105 | { |
DuyLionTran | 43:dcde0e66874a | 106 | int retVal = -1; |
DuyLionTran | 43:dcde0e66874a | 107 | |
DuyLionTran | 43:dcde0e66874a | 108 | if ( isValidToken ( parentIndex ) ) |
DuyLionTran | 43:dcde0e66874a | 109 | { |
DuyLionTran | 43:dcde0e66874a | 110 | |
DuyLionTran | 43:dcde0e66874a | 111 | jsmntype_t type = tokens [ parentIndex ].type; |
DuyLionTran | 43:dcde0e66874a | 112 | if ( ( type == JSMN_KEY ) || ( type == JSMN_OBJECT ) || ( type == JSMN_ARRAY ) ) |
DuyLionTran | 43:dcde0e66874a | 113 | { |
DuyLionTran | 43:dcde0e66874a | 114 | int i = startingAt + 1; |
DuyLionTran | 43:dcde0e66874a | 115 | if ( startingAt < 0 ) |
DuyLionTran | 43:dcde0e66874a | 116 | { |
DuyLionTran | 43:dcde0e66874a | 117 | i = 0; |
DuyLionTran | 43:dcde0e66874a | 118 | } |
DuyLionTran | 43:dcde0e66874a | 119 | |
DuyLionTran | 43:dcde0e66874a | 120 | for ( i += parentIndex; i < tokenCount; i++ ) |
DuyLionTran | 43:dcde0e66874a | 121 | { |
DuyLionTran | 43:dcde0e66874a | 122 | if ( tokens [ i ].parent == parentIndex ) |
DuyLionTran | 43:dcde0e66874a | 123 | { |
DuyLionTran | 43:dcde0e66874a | 124 | retVal = i; |
DuyLionTran | 43:dcde0e66874a | 125 | break; |
DuyLionTran | 43:dcde0e66874a | 126 | } |
DuyLionTran | 43:dcde0e66874a | 127 | } |
DuyLionTran | 43:dcde0e66874a | 128 | } |
DuyLionTran | 43:dcde0e66874a | 129 | } |
DuyLionTran | 43:dcde0e66874a | 130 | |
DuyLionTran | 43:dcde0e66874a | 131 | return retVal; |
DuyLionTran | 43:dcde0e66874a | 132 | } |
DuyLionTran | 43:dcde0e66874a | 133 | |
DuyLionTran | 43:dcde0e66874a | 134 | bool Json::matches ( const int & tokenIndex, const char * value ) const |
DuyLionTran | 43:dcde0e66874a | 135 | { |
DuyLionTran | 43:dcde0e66874a | 136 | bool retVal = false; |
DuyLionTran | 43:dcde0e66874a | 137 | |
DuyLionTran | 43:dcde0e66874a | 138 | if ( isValidToken ( tokenIndex ) ) |
DuyLionTran | 43:dcde0e66874a | 139 | { |
DuyLionTran | 43:dcde0e66874a | 140 | jsmntok_t token = tokens [ tokenIndex ]; |
DuyLionTran | 43:dcde0e66874a | 141 | retVal = ( strncmp ( source + token.start, value, ( token.end - token.start ) ) == 0 ); |
DuyLionTran | 43:dcde0e66874a | 142 | } |
DuyLionTran | 43:dcde0e66874a | 143 | |
DuyLionTran | 43:dcde0e66874a | 144 | return retVal; |
DuyLionTran | 43:dcde0e66874a | 145 | } |
DuyLionTran | 43:dcde0e66874a | 146 | |
DuyLionTran | 43:dcde0e66874a | 147 | int Json::tokenIntegerValue ( const int tokenIndex, int &returnValue ) const |
DuyLionTran | 43:dcde0e66874a | 148 | { |
DuyLionTran | 43:dcde0e66874a | 149 | int retVal = -1; |
DuyLionTran | 43:dcde0e66874a | 150 | |
DuyLionTran | 43:dcde0e66874a | 151 | if ( type ( tokenIndex ) == JSMN_PRIMITIVE ) |
DuyLionTran | 43:dcde0e66874a | 152 | { |
DuyLionTran | 43:dcde0e66874a | 153 | int len = tokenLength ( tokenIndex ); |
DuyLionTran | 43:dcde0e66874a | 154 | char * tok = new char [ len + 1 ]; |
DuyLionTran | 43:dcde0e66874a | 155 | strncpy ( tok, tokenAddress ( tokenIndex ), len ); |
DuyLionTran | 43:dcde0e66874a | 156 | tok [ len ] = 0; |
DuyLionTran | 43:dcde0e66874a | 157 | returnValue = atoi ( tok ); |
DuyLionTran | 43:dcde0e66874a | 158 | delete [] tok; |
DuyLionTran | 43:dcde0e66874a | 159 | retVal = 0; |
DuyLionTran | 43:dcde0e66874a | 160 | } |
DuyLionTran | 43:dcde0e66874a | 161 | return retVal; |
DuyLionTran | 43:dcde0e66874a | 162 | } |
DuyLionTran | 43:dcde0e66874a | 163 | |
DuyLionTran | 43:dcde0e66874a | 164 | int Json::tokenNumberValue ( const int tokenIndex, float &returnValue ) const |
DuyLionTran | 43:dcde0e66874a | 165 | { |
DuyLionTran | 43:dcde0e66874a | 166 | int retVal = -1; |
DuyLionTran | 43:dcde0e66874a | 167 | |
DuyLionTran | 43:dcde0e66874a | 168 | if ( type ( tokenIndex ) == JSMN_PRIMITIVE ) |
DuyLionTran | 43:dcde0e66874a | 169 | { |
DuyLionTran | 43:dcde0e66874a | 170 | int len = tokenLength ( tokenIndex ); |
DuyLionTran | 43:dcde0e66874a | 171 | char * tok = new char [ len + 1 ]; |
DuyLionTran | 43:dcde0e66874a | 172 | strncpy ( tok, tokenAddress ( tokenIndex ), len ); |
DuyLionTran | 43:dcde0e66874a | 173 | tok [ len ] = 0; |
DuyLionTran | 43:dcde0e66874a | 174 | returnValue = atof ( tok ); |
DuyLionTran | 43:dcde0e66874a | 175 | delete [] tok; |
DuyLionTran | 43:dcde0e66874a | 176 | retVal = 0; |
DuyLionTran | 43:dcde0e66874a | 177 | } |
DuyLionTran | 43:dcde0e66874a | 178 | |
DuyLionTran | 43:dcde0e66874a | 179 | return retVal; |
DuyLionTran | 43:dcde0e66874a | 180 | } |
DuyLionTran | 43:dcde0e66874a | 181 | |
DuyLionTran | 43:dcde0e66874a | 182 | int Json::tokenBooleanValue ( const int tokenIndex, bool &returnValue ) const |
DuyLionTran | 43:dcde0e66874a | 183 | { |
DuyLionTran | 43:dcde0e66874a | 184 | int retVal = -1; |
DuyLionTran | 43:dcde0e66874a | 185 | |
DuyLionTran | 43:dcde0e66874a | 186 | if ( type ( tokenIndex ) == JSMN_PRIMITIVE ) |
DuyLionTran | 43:dcde0e66874a | 187 | { |
DuyLionTran | 43:dcde0e66874a | 188 | returnValue = matches ( tokenIndex, "true" ); |
DuyLionTran | 43:dcde0e66874a | 189 | retVal = 0; |
DuyLionTran | 43:dcde0e66874a | 190 | } |
DuyLionTran | 43:dcde0e66874a | 191 | |
DuyLionTran | 43:dcde0e66874a | 192 | return retVal; |
DuyLionTran | 43:dcde0e66874a | 193 | } |
DuyLionTran | 43:dcde0e66874a | 194 | |
DuyLionTran | 43:dcde0e66874a | 195 | char * Json::unescape ( char * jsonString ) |
DuyLionTran | 43:dcde0e66874a | 196 | { |
DuyLionTran | 43:dcde0e66874a | 197 | if ( jsonString != NULL ) |
DuyLionTran | 43:dcde0e66874a | 198 | { |
DuyLionTran | 43:dcde0e66874a | 199 | int stringIndex = 0; |
DuyLionTran | 43:dcde0e66874a | 200 | int indentLevel = 0; |
DuyLionTran | 43:dcde0e66874a | 201 | int quoteCount = 0; |
DuyLionTran | 43:dcde0e66874a | 202 | for ( int i = 0; jsonString [ i ] != 0; i ++ ) |
DuyLionTran | 43:dcde0e66874a | 203 | { |
DuyLionTran | 43:dcde0e66874a | 204 | switch ( jsonString [ i ] ) |
DuyLionTran | 43:dcde0e66874a | 205 | { |
DuyLionTran | 43:dcde0e66874a | 206 | case '{': |
DuyLionTran | 43:dcde0e66874a | 207 | indentLevel ++; |
DuyLionTran | 43:dcde0e66874a | 208 | break; |
DuyLionTran | 43:dcde0e66874a | 209 | |
DuyLionTran | 43:dcde0e66874a | 210 | case '}': |
DuyLionTran | 43:dcde0e66874a | 211 | indentLevel --; |
DuyLionTran | 43:dcde0e66874a | 212 | if ( indentLevel == 0 ) { |
DuyLionTran | 43:dcde0e66874a | 213 | // Just close and return the first valid JSON object. No need to handle complex cases. |
DuyLionTran | 43:dcde0e66874a | 214 | jsonString [ stringIndex ++ ] = '}'; |
DuyLionTran | 43:dcde0e66874a | 215 | jsonString [ stringIndex ] = 0; |
DuyLionTran | 43:dcde0e66874a | 216 | return jsonString; |
DuyLionTran | 43:dcde0e66874a | 217 | } |
DuyLionTran | 43:dcde0e66874a | 218 | break; |
DuyLionTran | 43:dcde0e66874a | 219 | |
DuyLionTran | 43:dcde0e66874a | 220 | case '\\': |
DuyLionTran | 43:dcde0e66874a | 221 | i ++; |
DuyLionTran | 43:dcde0e66874a | 222 | break; |
DuyLionTran | 43:dcde0e66874a | 223 | |
DuyLionTran | 43:dcde0e66874a | 224 | case '"': |
DuyLionTran | 43:dcde0e66874a | 225 | quoteCount ++; |
DuyLionTran | 43:dcde0e66874a | 226 | break; |
DuyLionTran | 43:dcde0e66874a | 227 | } |
DuyLionTran | 43:dcde0e66874a | 228 | |
DuyLionTran | 43:dcde0e66874a | 229 | if ( indentLevel > 0 ) |
DuyLionTran | 43:dcde0e66874a | 230 | { |
DuyLionTran | 43:dcde0e66874a | 231 | if ( quoteCount == 0 ) { |
DuyLionTran | 43:dcde0e66874a | 232 | return jsonString; //No need to unescape. JsonString needs to be already escaped |
DuyLionTran | 43:dcde0e66874a | 233 | } |
DuyLionTran | 43:dcde0e66874a | 234 | jsonString [ stringIndex ++ ] = jsonString [ i ]; |
DuyLionTran | 43:dcde0e66874a | 235 | } |
DuyLionTran | 43:dcde0e66874a | 236 | } |
DuyLionTran | 43:dcde0e66874a | 237 | jsonString [ stringIndex ] = 0; |
DuyLionTran | 43:dcde0e66874a | 238 | } |
DuyLionTran | 43:dcde0e66874a | 239 | |
DuyLionTran | 43:dcde0e66874a | 240 | return jsonString; |
DuyLionTran | 43:dcde0e66874a | 241 | } |