188 lines
4.7 KiB
C++
188 lines
4.7 KiB
C++
/**
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*
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* helpers.cpp: InfluxDB Client util functions
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*
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* MIT License
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*
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* Copyright (c) 2020 InfluxData
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "helpers.h"
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void timeSync(const char *tzInfo, const char* ntpServer1, const char* ntpServer2, const char* ntpServer3) {
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// Accurate time is necessary for certificate validion
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configTzTime(tzInfo,ntpServer1, ntpServer2, ntpServer3);
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// Wait till time is synced
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Serial.print("Syncing time");
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int i = 0;
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while (time(nullptr) < 1000000000l && i < 40) {
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Serial.print(".");
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delay(500);
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i++;
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}
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Serial.println();
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// Show time
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time_t tnow = time(nullptr);
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Serial.print("Synchronized time: ");
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Serial.println(ctime(&tnow));
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}
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unsigned long long getTimeStamp(struct timeval *tv, int secFracDigits) {
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unsigned long long tsVal = 0;
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switch(secFracDigits) {
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case 0:
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tsVal = tv->tv_sec;
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break;
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case 6:
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tsVal = tv->tv_sec * 1000000LL + tv->tv_usec;
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break;
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case 9:
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tsVal = tv->tv_sec * 1000000000LL + tv->tv_usec * 1000LL;
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break;
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case 3:
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default:
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tsVal = tv->tv_sec * 1000LL + tv->tv_usec / 1000LL;
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break;
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}
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return tsVal;
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}
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char *timeStampToString(unsigned long long timestamp, int extraCharsSpace) {
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//22 is max long long string length (18)
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char *buff = new char[22+extraCharsSpace+1];
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snprintf(buff, 22, "%llu", timestamp);
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return buff;
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}
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static char escapeChars[] = "=\r\n\t ,";
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char *escapeKey(const String &key, bool escapeEqual) {
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char c,*ret,*d,*s = (char *)key.c_str();
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int n = 0;
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while ((c = *s++)) {
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if(strchr(escapeEqual?escapeChars:escapeChars+1, c)) {
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n++;
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}
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}
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ret = new char[key.length()+n+1];
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s = (char *)key.c_str();
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d = ret;
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while ((c = *s++)) {
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if (strchr(escapeEqual?escapeChars:escapeChars+1,c)) {
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*d++ = '\\';
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}
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*d++ = c;
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}
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*d = 0;
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return ret;
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}
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String escapeValue(const char *value) {
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String ret;
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int len = strlen_P(value);
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ret.reserve(len+7); //5 is estimate of max chars needs to escape,
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ret += '"';
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for(int i=0;i<len;i++)
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{
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switch (value[i])
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{
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case '\\':
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case '\"':
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ret += '\\';
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break;
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}
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ret += value[i];
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}
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ret += '"';
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return ret;
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}
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static char invalidChars[] = "$&+,/:;=?@ <>#%{}|\\^~[]`";
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static char hex_digit(char c) {
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return "0123456789ABCDEF"[c & 0x0F];
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}
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String urlEncode(const char* src) {
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int n=0;
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char c,*s = (char *)src;
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while ((c = *s++)) {
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if(strchr(invalidChars, c)) {
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n++;
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}
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}
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String ret;
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ret.reserve(strlen(src)+2*n+1);
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s = (char *)src;
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while ((c = *s++)) {
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if (strchr(invalidChars,c)) {
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ret += '%';
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ret += hex_digit(c >> 4);
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ret += hex_digit(c);
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}
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else ret += c;
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}
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return ret;
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}
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bool isValidID(const char *idString) {
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if(strlen(idString) != 16) {
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return false;
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}
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for(int i=0;i<16;i++) {
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//0-9,a-f
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if(!((idString[i] >= '0' && idString[i] <= '9') || (idString[i] >= 'a' && idString[i] <= 'f'))) {
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return false;
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}
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}
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return true;
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}
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const char *bool2string(bool val) {
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return (val?"true":"false");
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}
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uint8_t getNumLength(long long l) {
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uint8_t c = 0;
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do {
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c++;
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l /=10;
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} while(l);
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return c;
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}
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char *cloneStr(const char *str) {
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char *ret = new char[strlen(str)+1];
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strcpy(ret, str);
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return ret;
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}
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size_t strLen(const char *str) {
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if(!str) {
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return 0;
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}
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return strlen(str);
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} |