Ribera-Iot / Json

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Json.cpp@0:c1cd8e6ecdc9, 2017-05-25 (annotated)

Committer:
Amod Amatya amodamatya@gmail.com
Date:
Thu May 25 15:14:50 2017 +0545
Revision:
0:c1cd8e6ecdc9
ini

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 1 /* Json.cpp */
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 2 /* Original Author: Faheem Inayat
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 3 * Created by "Night Crue" Team @ TechShop San Jose, CA
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 4 *
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 5 * MIT License
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 6 *
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 7 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 8 * and associated documentation files (the "Software"), to deal in the Software without restriction,
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 9 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 10 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 11 * furnished to do so, subject to the following conditions:
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 12 *
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 13 * The above copyright notice and this permission notice shall be included in all copies or
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 14 * substantial portions of the Software.
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 15 *
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 17 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 21 */
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 22
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 23 #include "Json.h"
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 24 #include <stdio.h>
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 25
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 26
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 27 // Json::Json() : maxTokenCount ( 0 ), sourceLength ( 0 )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 28 // {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 29
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 30 // }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 31 // Json::Json() :maxTokenCount ( 0 ), source ( NULL ), sourceLength ( 0 )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 32 // {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 33 // tokenCount = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 34 // tokens = NULL;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 35 // }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 36
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 37 Json::Json ( const char * jsonString, size_t length, unsigned int maxTokens )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 38 : maxTokenCount ( maxTokens ), source ( jsonString ), sourceLength ( length )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 39 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 40 jsmn_parser parser;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 41 tokens = new jsmntok_t [ maxTokenCount ];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 42
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 43 jsmn_init ( &parser );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 44 tokenCount = jsmn_parse ( &parser, jsonString, length, tokens, maxTokenCount );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 45 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 46
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 47 Json::Json ( const Json & )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 48 : maxTokenCount ( 0 ), source ( NULL ), sourceLength ( 0 )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 49 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 50 tokenCount = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 51 tokens = NULL;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 52 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 53
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 54 Json::~Json ()
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 55 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 56 delete [] tokens;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 57 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 58
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 59 int Json::findKeyIndex ( const char * key, const int &startingAt ) const
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 60 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 61 int retVal = -1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 62
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 63 int i = startingAt + 1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 64 if ( i < 0 ) {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 65 i = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 66 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 67
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 68 for ( ; i < tokenCount; i++ )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 69 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 70 jsmntok_t t = tokens [ i ];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 71
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 72 if ( t.type == JSMN_KEY )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 73 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 74 size_t keyLength = (size_t) ( t.end - t.start );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 75 if ( ( strlen ( key ) == keyLength ) && ( strncmp ( source + t.start, key, keyLength ) == 0 ) )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 76 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 77 retVal = i;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 78 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 79 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 80 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 81 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 82
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 83 return retVal;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 84 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 85
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 86 int Json::findKeyIndexIn ( const char * key, const int &parentIndex ) const
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 87 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 88 int retVal = -1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 89
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 90 if ( isValidToken ( parentIndex ) )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 91 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 92 for ( int i = parentIndex + 1; i < tokenCount; i++ )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 93 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 94 jsmntok_t t = tokens [ i ];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 95
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 96 if ( t.end >= tokens [ parentIndex ].end )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 97 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 98 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 99 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 100
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 101 if ( ( t.type == JSMN_KEY ) && ( t.parent == parentIndex ) )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 102 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 103 size_t keyLength = (size_t) ( t.end - t.start );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 104 if ( ( strlen ( key ) == keyLength ) && ( strncmp ( source + t.start, key, keyLength ) == 0 ) )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 105 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 106 retVal = i;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 107 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 108 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 109 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 110 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 111 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 112
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 113 return retVal;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 114 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 115
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 116 int Json::findChildIndexOf ( const int &parentIndex, const int &startingAt ) const
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 117 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 118 int retVal = -1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 119
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 120 if ( isValidToken ( parentIndex ) )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 121 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 122
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 123 jsmntype_t type = tokens [ parentIndex ].type;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 124 if ( ( type == JSMN_KEY ) || ( type == JSMN_OBJECT ) || ( type == JSMN_ARRAY ) )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 125 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 126 int i = startingAt + 1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 127 if ( startingAt < 0 )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 128 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 129 i = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 130 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 131
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 132 for ( i += parentIndex; i < tokenCount; i++ )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 133 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 134 if ( tokens [ i ].parent == parentIndex )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 135 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 136 retVal = i;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 137 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 138 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 139 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 140 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 141 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 142
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 143 return retVal;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 144 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 145
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 146 bool Json::matches ( const int & tokenIndex, const char * value ) const
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 147 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 148 bool retVal = false;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 149
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 150 if ( isValidToken ( tokenIndex ) )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 151 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 152 jsmntok_t token = tokens [ tokenIndex ];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 153 retVal = ( strncmp ( source + token.start, value, ( token.end - token.start ) ) == 0 );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 154 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 155
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 156 return retVal;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 157 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 158
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 159 int Json::tokenIntegerValue ( const int tokenIndex, int &returnValue ) const
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 160 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 161 int retVal = -1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 162
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 163 if ( type ( tokenIndex ) == JSMN_PRIMITIVE )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 164 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 165 int len = tokenLength ( tokenIndex );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 166 char * tok = new char [ len + 1 ];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 167 strncpy ( tok, tokenAddress ( tokenIndex ), len );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 168 tok [ len ] = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 169 returnValue = atoi ( tok );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 170 delete [] tok;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 171 retVal = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 172 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 173 return retVal;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 174 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 175
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 176 int Json::tokenNumberValue ( const int tokenIndex, float &returnValue ) const
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 177 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 178 int retVal = -1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 179
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 180 if ( type ( tokenIndex ) == JSMN_PRIMITIVE )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 181 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 182 int len = tokenLength ( tokenIndex );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 183 char * tok = new char [ len + 1 ];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 184 strncpy ( tok, tokenAddress ( tokenIndex ), len );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 185 tok [ len ] = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 186 returnValue = atof ( tok );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 187 delete [] tok;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 188 retVal = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 189 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 190
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 191 return retVal;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 192 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 193
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 194 int Json::tokenBooleanValue ( const int tokenIndex, bool &returnValue ) const
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 195 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 196 int retVal = -1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 197
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 198 if ( type ( tokenIndex ) == JSMN_PRIMITIVE )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 199 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 200 returnValue = matches ( tokenIndex, "true" );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 201 retVal = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 202 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 203
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 204 return retVal;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 205 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 206
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 207 char * Json::unescape ( char * jsonString )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 208 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 209 if ( jsonString != NULL )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 210 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 211 int stringIndex = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 212 int indentLevel = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 213 int quoteCount = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 214 for ( int i = 0; jsonString [ i ] != 0; i ++ )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 215 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 216 switch ( jsonString [ i ] )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 217 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 218 case '{':
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 219 indentLevel ++;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 220 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 221
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 222 case '}':
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 223 indentLevel --;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 224 if ( indentLevel == 0 ) {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 225 // Just close and return the first valid JSON object. No need to handle complex cases.
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 226 jsonString [ stringIndex ++ ] = '}';
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 227 jsonString [ stringIndex ] = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 228 return jsonString;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 229 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 230 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 231
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 232 case '\\':
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 233 i ++;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 234 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 235
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 236 case '"':
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 237 quoteCount ++;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 238 break;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 239 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 240
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 241 if ( indentLevel > 0 )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 242 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 243 if ( quoteCount == 0 ) {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 244 return jsonString; //No need to unescape. JsonString needs to be already escaped
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 245 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 246 jsonString [ stringIndex ++ ] = jsonString [ i ];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 247 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 248 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 249 jsonString [ stringIndex ] = 0;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 250 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 251
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 252 return jsonString;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 253 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 254
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 255 const char * Json::JsonParse(const char * jsonString, const char * key)
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 256 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 257
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 258 Json json ( jsonString, strlen ( jsonString));
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 259
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 260 if ( !json.isValidJson () )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 261 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 262 printf( "Invalid JSON: %s", jsonString );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 263 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 264
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 265 if ( json.type (0) != JSMN_OBJECT )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 266 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 267 printf ( "Invalid JSON. ROOT element is not Object: %s", jsonString );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 268 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 269
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 270 char *info1 = new char[32];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 271
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 272 // ROOT object should have '0' tokenIndex, and -1 parentIndex
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 273 int KeyIndex = json.findKeyIndexIn(key,0);
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 274
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 275 if (KeyIndex == -1)
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 276 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 277 // Error handling part ...
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 278 printf ( "Key does not exist");
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 279 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 280 else
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 281 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 282 // Find the first child index of key-node "info"
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 283 int ValueIndex = json.findChildIndexOf (KeyIndex, -1 );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 284 if (ValueIndex > 0 )
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 285 {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 286 const char * valueStart = json.tokenAddress (ValueIndex );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 287 int valueLength = json.tokenLength (ValueIndex );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 288 strncpy ( info1, valueStart, valueLength );
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 289 // info[valueLength] = 0; // NULL-terminate the string
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 290 // strcpy(info1, info);
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 291 //let's print the value. It should be "San Jose"
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 292 // printf( "info: %s", info);
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 293 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 294 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 295 return info1;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 296 }
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 297 // plublic:
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 298 // const char* getBar() const {
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 299 // char * str = new char[_sBar.length()+1];
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 300 // strcpy(str, _sBar.c_str());
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 301 // return str;}
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 302 // In main:
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 303
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 304 // foo object;
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 305 // ///some code
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 306 // const char* bar = object.getBar();
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 307 // ///some code
Amod Amatya amodamatya@gmail.com 0:c1cd8e6ecdc9 308 // delete [] bar;