File content as of revision 0:846e2321c637:

/**
 * Copyright 2015 Afero, 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.
 */

//wsugi #include "Arduino.h"
#include "mbed.h"
#include <stdio.h>
#include "Command.h"
#include "msg_types.h"

#define SERIAL_PRINT_DBG_ASR_ON 0

#define CMD_HDR_LEN  4    // 4 byte header on all commands
#define CMD_VAL_LEN  2    // 2 byte value length for commands that have a value

const char *CMD_NAMES[] = {"SET   ", "GET   ", "UPDATE"};


Command::Command(uint16_t len, uint8_t *bytes) {
    int index = 0;

    _cmd = bytes[index++];
    _requestId = bytes[index++];
    _attrId = bytes[index + 0] | bytes[index + 1] << 8;
    index += 2;

    if (_cmd == MSG_TYPE_GET) {
        return;
    }
    if (_cmd == MSG_TYPE_UPDATE) {
        _status = bytes[index++];
        _reason = bytes[index++];
    }

    _valueLen = bytes[index + 0] | bytes[index + 1] << 8;
    index += 2;
    _value = new uint8_t[_valueLen];
    for (int i = 0; i < _valueLen; i++) {
        _value[i] = bytes[index + i];
    }
}

Command::Command(uint8_t requestId, const char *str) {
    _requestId = requestId & 0xff;

    char *cp; //wsugi = strdup(str);
//wsugi 00 start    
    {
        int length = strlen(str)+1;
        cp = (char*)malloc(length);
        strcpy(cp,str);
    }
//wsugi 00 end
    char *tok = strtok(cp, " ");
    _cmd = strToCmd(tok);

    tok = strtok(NULL, " ");
    _attrId = strToAttrId(tok);

    if (_cmd == MSG_TYPE_GET) {
        _valueLen = 0;
        _value = NULL;
    } else {
        tok = strtok(NULL, " ");
        _valueLen = strlen(tok) / 2;
        _value = new uint8_t[_valueLen];
        strToValue(tok, _value);
    }

    free(cp);
}

Command::Command(uint8_t requestId, uint8_t cmd, uint16_t attrId) {
    _requestId = requestId;
    _cmd = cmd;
    _attrId = attrId;
    _valueLen = 0;
    _value = NULL;
}

Command::Command(uint8_t requestId, uint8_t cmd, uint16_t attrId, uint16_t valueLen, uint8_t *value) {
    _requestId = requestId;
    _cmd = cmd;
    _attrId = attrId;
    _valueLen = valueLen;
    _value = new uint8_t[_valueLen];
    memcpy(_value, value, valueLen);
}

Command::Command(uint8_t requestId, uint8_t cmd, uint16_t attrId, uint8_t status, uint8_t reason, uint16_t valueLen,
                 uint8_t *value) {
    _requestId = requestId;
    _cmd = cmd;
    _attrId = attrId;
    _status = status;
    _reason = reason;
    _valueLen = valueLen;
    _value = new uint8_t[_valueLen];
    memcpy(_value, value, valueLen);
}

Command::Command() {
}

Command::~Command() {
    if (_value != NULL) {
        delete[] _value; //wsugi delete (_value);
    }
}

int Command::strToValue(char *valueStr, uint8_t *value) {
    for (int i = 0; i < (int) (strlen(valueStr) / 2); i++) {
        int j = i * 2;
        value[i] = getVal(valueStr[j + 1]) + (getVal(valueStr[j]) << 4);
    }

    return 0;
}

uint16_t Command::strToAttrId(char *attrIdStr) {
    return atoi(attrIdStr);
    //return String(attrIdStr).toInt();
}

uint8_t Command::strToCmd(char *cmdStr) {
    char c = cmdStr[0];
    if (c == 'g' || c == 'G') {
        return MSG_TYPE_GET;
    } else if (c == 's' || c == 'S') {
        return MSG_TYPE_SET;
    } else if (c == 'u' || c == 'U') {
        return MSG_TYPE_UPDATE;
    }

    return 0xFF ;
}

uint8_t Command::getCommand() {
    return _cmd;
}

uint8_t Command::getReqId() {
    return _requestId;
}

uint16_t Command::getAttrId() {
    return _attrId;
}

uint16_t Command::getValueLen() {
    return _valueLen;
}

void Command::getValue(uint8_t *value) {
    for (int i = 0; i < _valueLen; i++) {
        value[i] = _value[i];
    }
}

uint8_t *Command::getValueP() {
    return _value;
}

uint16_t Command::getSize() {
    uint16_t len = CMD_HDR_LEN;

    if (_cmd != MSG_TYPE_GET) {
        len += CMD_VAL_LEN + _valueLen;
    }

    if (_cmd == MSG_TYPE_UPDATE) {
        len += 2; // status byte + reason byte
    }

    return len;
}

uint16_t Command::getBytes(uint8_t *bytes) {
    uint16_t len = getSize();

    int index = 0;

    bytes[index++] = (_cmd);

    bytes[index++] = (_requestId);

    bytes[index++] = (_attrId & 0xff);
    bytes[index++] = ((_attrId >> 8) & 0xff);

    if (_cmd == MSG_TYPE_GET) {
        return len;
    }

    if (_cmd == MSG_TYPE_UPDATE) {
        bytes[index++] = (_status);
        bytes[index++] = (_reason);
    }

    bytes[index++] = (_valueLen & 0xff);
    bytes[index++] = ((_valueLen >> 8) & 0xff);

    for (int i = 0; i < _valueLen; i++) {
        bytes[index++] = (_value[i]);
    }

    return len;
}

bool Command::isValid() {
    return (_cmd == MSG_TYPE_SET) || (_cmd == MSG_TYPE_GET) || (_cmd == MSG_TYPE_UPDATE);
}

void Command::dumpBytes() {
#if SERIAL_PRINT_DBG_ASR_ON
    uint16_t len = getSize();
    uint8_t bytes[len];
    getBytes(bytes);

    _printBuf[0] = 0;
    sprintf(_printBuf, "len: %d value: ", len);
    for (int i = 0; i < len; i++) {
        int b = bytes[i] & 0xff;
        sprintf(&_printBuf[strlen(_printBuf)], "%02x", b);
    }
    printf("%s\n",_printBuf);
#endif
}

void Command::dump() {
#if SERIAL_PRINT_DBG_ASR_ON
    _printBuf[0] = 0;
    sprintf(_printBuf, "cmd: %s attr: %d value: ",
            CMD_NAMES[_cmd - MESSAGE_CHANNEL_BASE - 1],
            _attrId
    );
    if (_cmd != MSG_TYPE_GET) {
        for (int i = 0; i < _valueLen; i++) {
            int b = _value[i] & 0xff;
            sprintf(&_printBuf[strlen(_printBuf)], "%02x", b);
        }
    }
    printf("%s\n",_printBuf);
#endif
}

uint8_t Command::getVal(char c) {
    if (c >= '0' && c <= '9')
        return (uint8_t)(c - '0');
    else if (c >= 'A' && c <= 'F')
        return (uint8_t)(c - 'A' + 10);
    else if (c >= 'a' && c <= 'f')
        return (uint8_t)(c - 'a' + 10);

    printf("bad hex char: %c\n",c);

    return 0;
}