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Replace std::regex with sscanf calls (#6468)
* Replace std::regex with sscanf calls * Fix CI * Use regular formatting placeholders * Fix
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parent
f09bfa7311
commit
0148ebcaa6
2 changed files with 37 additions and 44 deletions
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@ -1,9 +1,7 @@
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#ifdef USE_DATETIME
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#include <regex>
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#endif
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#include "helpers.h"
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#include "time.h" // NOLINT
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#include "helpers.h"
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#include <cinttypes>
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namespace esphome {
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@ -66,48 +64,47 @@ std::string ESPTime::strftime(const std::string &format) {
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return timestr;
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}
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#ifdef USE_DATETIME
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bool ESPTime::strptime(const std::string &time_to_parse, ESPTime &esp_time) {
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// clang-format off
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std::regex dt_regex(R"(^
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(
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(\d{4})-(\d{1,2})-(\d{1,2})
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(?:\s(?=.+))
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)?
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(
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(\d{1,2}):(\d{2})
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(?::(\d{2}))?
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)?
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$)");
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// clang-format on
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uint16_t year;
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uint8_t month;
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uint8_t day;
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uint8_t hour;
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uint8_t minute;
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uint8_t second;
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int num;
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std::smatch match;
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if (std::regex_match(time_to_parse, match, dt_regex) == 0)
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if (sscanf(time_to_parse.c_str(), "%04hu-%02hhu-%02hhu %02hhu:%02hhu:%02hhu %n", &year, &month, &day, // NOLINT
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&hour, // NOLINT
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&minute, // NOLINT
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&second, &num) == 6 && // NOLINT
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num == time_to_parse.size()) {
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esp_time.year = year;
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esp_time.month = month;
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esp_time.day_of_month = day;
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esp_time.hour = hour;
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esp_time.minute = minute;
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esp_time.second = second;
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} else if (sscanf(time_to_parse.c_str(), "%02hhu:%02hhu:%02hhu %n", &hour, &minute, &second, &num) == 3 && // NOLINT
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num == time_to_parse.size()) {
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esp_time.hour = hour;
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esp_time.minute = minute;
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esp_time.second = second;
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} else if (sscanf(time_to_parse.c_str(), "%02hhu:%02hhu %n", &hour, &minute, &num) == 2 && // NOLINT
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num == time_to_parse.size()) {
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esp_time.hour = hour;
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esp_time.minute = minute;
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esp_time.second = 0;
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} else if (sscanf(time_to_parse.c_str(), "%04hu-%02hhu-%02hhu %n", &year, &month, &day, &num) == 3 && // NOLINT
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num == time_to_parse.size()) {
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esp_time.year = year;
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esp_time.month = month;
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esp_time.day_of_month = day;
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} else {
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return false;
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if (match[1].matched) { // Has date parts
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esp_time.year = parse_number<uint16_t>(match[2].str()).value_or(0);
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esp_time.month = parse_number<uint8_t>(match[3].str()).value_or(0);
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esp_time.day_of_month = parse_number<uint8_t>(match[4].str()).value_or(0);
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}
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if (match[5].matched) { // Has time parts
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esp_time.hour = parse_number<uint8_t>(match[6].str()).value_or(0);
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esp_time.minute = parse_number<uint8_t>(match[7].str()).value_or(0);
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if (match[8].matched) {
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esp_time.second = parse_number<uint8_t>(match[8].str()).value_or(0);
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} else {
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esp_time.second = 0;
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}
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}
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return true;
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}
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#endif
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void ESPTime::increment_second() {
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this->timestamp++;
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if (!increment_time_value(this->second, 0, 60))
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@ -67,8 +67,6 @@ struct ESPTime {
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this->day_of_year < 367 && this->month > 0 && this->month < 13;
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}
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#ifdef USE_DATETIME
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/** Convert a string to ESPTime struct as specified by the format argument.
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* @param time_to_parse null-terminated c string formatet like this: 2020-08-25 05:30:00.
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* @param esp_time an instance of a ESPTime struct
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@ -76,8 +74,6 @@ struct ESPTime {
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*/
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static bool strptime(const std::string &time_to_parse, ESPTime &esp_time);
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#endif
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/// Convert a C tm struct instance with a C unix epoch timestamp to an ESPTime instance.
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static ESPTime from_c_tm(struct tm *c_tm, time_t c_time);
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