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test
aws-iot/src/aws_iot_json_utils.cpp
- Committer:
- peyo
- Date:
- 2017-04-12
- Revision:
- 1:3f75eb8d46f4
- Parent:
- 0:cd5404401c2f
File content as of revision 1:3f75eb8d46f4:
/* * Copyright 2010-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. * A copy of the License is located at * * http://aws.amazon.com/apache2.0 * * or in the "license" file accompanying this file. This file is distributed * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either * express or implied. See the License for the specific language governing * permissions and limitations under the License. */ /** * @file aws_json_utils.c * @brief Utilities for manipulating JSON * * json_utils provides JSON parsing utilities for use with the IoT SDK. * Underlying JSON parsing relies on the Jasmine JSON parser. * */ #ifdef __cplusplus extern "C" { #endif #include "aws_iot_json_utils.h" #include <stdio.h> #include <stdint.h> #include <string.h> #ifdef __cplusplus #include <cinttypes> #else #include <inttypes.h> #endif #include "aws_iot_log.h" int8_t jsoneq(const char *json, jsmntok_t *tok, const char *s) { if(tok->type == JSMN_STRING) { if((int) strlen(s) == tok->end - tok->start) { if(strncmp(json + tok->start, s, (size_t) (tok->end - tok->start)) == 0) { return 0; } } } return -1; } IoT_Error_t parseUnsignedInteger32Value(uint32_t *i, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not an integer"); return JSON_PARSE_ERROR; } if(('-' == (char) (jsonString[token->start])) || (1 != sscanf(jsonString + token->start, "%lu", i))) { IOT_WARN("Token was not an unsigned integer."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseUnsignedInteger16Value(uint16_t *i, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not an integer"); return JSON_PARSE_ERROR; } //if(('-' == (char) (jsonString[token->start])) || (1 != sscanf(jsonString + token->start, "%" SCNu16, i))) { if(('-' == (char) (jsonString[token->start])) || (1 != sscanf(jsonString + token->start, "%hu", i))) { IOT_WARN("Token was not an unsigned integer."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseUnsignedInteger8Value(uint8_t *i, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not an integer"); return JSON_PARSE_ERROR; } //if(('-' == (char) (jsonString[token->start])) || (1 != sscanf(jsonString + token->start, "%" SCNu8, i))) { if(('-' == (char) (jsonString[token->start])) || (1 != sscanf(jsonString + token->start, "%hhu", i))) { IOT_WARN("Token was not an unsigned integer."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseInteger32Value(int32_t *i, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not an integer"); return JSON_PARSE_ERROR; } if(1 != sscanf(jsonString + token->start, "%li", i)) { IOT_WARN("Token was not an integer."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseInteger16Value(int16_t *i, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not an integer"); return JSON_PARSE_ERROR; } if(1 != sscanf(jsonString + token->start, "%i", i)) { IOT_WARN("Token was not an integer."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseInteger8Value(int8_t *i, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not an integer"); return JSON_PARSE_ERROR; } //if(1 != sscanf(jsonString + token->start, "%" SCNi8, i)) { if(1 != sscanf(jsonString + token->start, "%hhi", i)) { IOT_WARN("Token was not an integer."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseFloatValue(float *f, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not a float."); return JSON_PARSE_ERROR; } if(1 != sscanf(jsonString + token->start, "%f", f)) { IOT_WARN("Token was not a float."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseDoubleValue(double *d, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not a double."); return JSON_PARSE_ERROR; } if(1 != sscanf(jsonString + token->start, "%lf", d)) { IOT_WARN("Token was not a double."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseBooleanValue(bool *b, const char *jsonString, jsmntok_t *token) { if(token->type != JSMN_PRIMITIVE) { IOT_WARN("Token was not a primitive."); return JSON_PARSE_ERROR; } if(jsonString[token->start] == 't' && jsonString[token->start + 1] == 'r' && jsonString[token->start + 2] == 'u' && jsonString[token->start + 3] == 'e') { *b = true; } else if(jsonString[token->start] == 'f' && jsonString[token->start + 1] == 'a' && jsonString[token->start + 2] == 'l' && jsonString[token->start + 3] == 's' && jsonString[token->start + 4] == 'e') { *b = false; } else { IOT_WARN("Token was not a bool."); return JSON_PARSE_ERROR; } return SUCCESS; } IoT_Error_t parseStringValue(char *buf, const char *jsonString, jsmntok_t *token) { uint16_t size = 0; if(token->type != JSMN_STRING) { IOT_WARN("Token was not a string."); return JSON_PARSE_ERROR; } size = (uint16_t) (token->end - token->start); memcpy(buf, jsonString + token->start, size); buf[size] = '\0'; return SUCCESS; } #ifdef __cplusplus } #endif