forked from bblanchon/ArduinoJson
55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
/*
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* malloc-free JSON parser for Arduino
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* Benoit Blanchon 2014
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* MIT License
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*/
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#include "ArduinoJsonParser.h"
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bool JsonParserBase::parseAndCheckType(char* jsonString, jsmntype_t type)
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{
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buffer = jsonString;
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if (JSMN_SUCCESS != jsmn_parse(&parser, jsonString, tokens, maxTokenCount))
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return false;
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if (tokens[0].type != type)
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return false;
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// Add null termination to each token
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for (int i = 0; i < maxTokenCount; i++)
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{
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buffer[tokens[i].end] = 0;
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}
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return true;
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}
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char* JsonParserBase::getValueByKey(char* name)
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{
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// Scan each keys, every two other token
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// (skip index 0, because it's the whole json object)
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for (int i = 1; i < maxTokenCount; i += 2)
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{
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// Early break if we reach the last token
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if (i >= parser.toknext) break;
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// Get key token string
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char* key = buffer + tokens[i].start;
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// Compare with desired name
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if (strcmp(name, key) == 0)
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{
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return buffer + tokens[i + 1].start;
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}
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}
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}
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char* JsonParserBase::getValueByIndex(int index)
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{
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if (index < 0 || index >= parser.toknext)
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return NULL;
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return buffer + tokens[index + 1].start;
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}
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