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battletank/arduino/libraries/Temboo/src/utility/ChoreoDeviceFormatter.cpp

91 lines
2.3 KiB
C++

/*
###############################################################################
#
# Temboo Arduino library
#
# Copyright 2017, Temboo Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License 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.
#
###############################################################################
*/
#include <stddef.h>
#include <avr/pgmspace.h>
#include "ChoreoDeviceFormatter.h"
#include "ChoreoDevice.h"
static const char TAG_DEVICE[] PROGMEM = "\"deviceType\":";
static const char TAG_DEVICE_NAME[] PROGMEM = "\"device\":";
ChoreoDeviceFormatter::ChoreoDeviceFormatter(const ChoreoDevice* device, Type type) {
m_device = device;
m_type = type;
reset();
}
void ChoreoDeviceFormatter::reset() {
m_nextChar = NULL;
if (m_device == NULL || m_device->isEmpty()) {
m_nextState = END;
} else {
m_nextState = START;
}
}
bool ChoreoDeviceFormatter::hasNext() {
return m_nextState != END;
}
char ChoreoDeviceFormatter::next() {
char c = '\0';
switch(m_nextState) {
case START:
if (m_type == DEVICE_TYPE) {
c = readStartTagChar(TAG_DEVICE, DEVICE_TAG);
} else {
c = readStartTagChar(TAG_DEVICE_NAME, DEVICE_TAG);
}
break;
case DEVICE_TAG:
c = readTagChar(NAME_START);
break;
case NAME_START:
c = '"';
m_nextChar = m_device->getName();
if ((NULL == m_nextChar) || ('\0' == *m_nextChar)) {
m_nextState = NAME_END;
} else {
m_nextState = NAME;
}
break;
case NAME:
c = readValueChar(NAME_END);
break;
case NAME_END:
c = '"';
m_nextState = END;
break;
case END:
default:
c = '\0';
}
return c;
}