ArduinoJsonParser/JsonHashTable.cpp at master · sutootoo/ArduinoJsonParser · GitHub

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* malloc-free JSON parser for Arduino

* Benoit Blanchon 2014 - MIT License

#include "JsonArray.h"

#include "JsonHashTable.h"

#include <string.h> // for strcmp()

JsonHashTable::JsonHashTable(char* json, jsmntok_t* tokens)

: JsonObjectBase(json, tokens)

{

if (tokens == 0 || tokens[0].type != JSMN_OBJECT)

makeInvalid();

}

* Returns the token for the value associated with the specified key

jsmntok_t* JsonHashTable::getToken(const char* desiredKey)

{

// sanity check

if (json == 0 || tokens == 0 || desiredKey == 0)

return 0;

// skip first token, it's the whole object

jsmntok_t* currentToken = tokens + 1;

// scan each keys

for (int i = 0; i < tokens[0].size / 2 ; i++)

{

// get key token string

char* key = getStringFromToken(currentToken);

// compare with desired name

if (strcmp(desiredKey, key) == 0)

{

// return the value token that follows the key token

return currentToken + 1;

}

// move forward: key + value + nested tokens

currentToken += 2 + getNestedTokenCount(currentToken + 1);

}

// nothing found, return NULL

return 0;

}

bool JsonHashTable::containsKey(const char* key)

{

return getToken(key) != 0;

}

JsonArray JsonHashTable::getArray(const char* key)

{

return JsonArray(json, getToken(key));

}

bool JsonHashTable::getBool(const char* key)

{

return getBoolFromToken(getToken(key));

}

double JsonHashTable::getDouble(const char* key)

{

return getDoubleFromToken(getToken(key));

}

JsonHashTable JsonHashTable::getHashTable(const char* key)

{

return JsonHashTable(json, getToken(key));

}

long JsonHashTable::getLong(const char* key)

{

return getLongFromToken(getToken(key));

}

char* JsonHashTable::getString(const char* key)

{

return getStringFromToken(getToken(key));

}

ArduinoJsonParser/JsonHashTable.cpp at master · sutootoo/ArduinoJsonParser · GitHub

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