59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
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#include "ml_date.h"
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int now() {
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// get-universal-time
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time_t t = std::time(0);
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long int now = static_cast<long int>(t);
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return (int) now;
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}
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std::string date_to_string(const int datetime, const std::string format) {
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// std::locale::global(std::locale("en-US.UTF8"));
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time_t timestamp = datetime;
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char mbstr[128];
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if (std::strftime(mbstr, sizeof(mbstr), format.c_str(), std::localtime(×tamp))) {
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std::string result = {mbstr};
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return result;
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}
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// TODO exception here
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}
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int string_to_date(const std::string &datestr, const std::string &format) {
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// format for example "%d.%m.%Y";
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std::istringstream in{datestr.c_str()};
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date::sys_seconds tp;
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in >> date::parse(format, tp);
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return (int) tp.time_since_epoch().count();
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}
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int add_to_date(const int datetime, const int quantity, const std::string &part) {
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// part is one of 'year', 'month', 'day', 'hour', 'minute', 'second', or 'millisecond'
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// very basic implementation, just for now - no timezones DST etc
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time_t base = datetime;
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struct tm *tm = localtime(&base);
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if (part == "year") {
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tm->tm_year += quantity;
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} else if (part == "month") {
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tm->tm_mon += quantity;
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} else if (part == "day") {
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tm->tm_mday += quantity;
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} else if (part == "hour") {
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tm->tm_hour += quantity;
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} else if (part == "minute") {
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tm->tm_min += quantity;
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} else if (part == "second") {
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tm->tm_sec += quantity;
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} else {
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// TODO exception here
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}
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return (int) mktime(tm);
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}
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