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#include <cxxtools/tz.h>
#include <cxxtools/log.h>
#include <cxxtools/arg.h>
#include <iostream>
int main(int argc, char* argv[])
{
try
{
log_init();
cxxtools::Arg<bool> help(argc, argv, '?');
if (help || argc == 1)
{
std::cerr << "Usage: " << argv[0] << " {options} {times}\n"
"\n"
"Synopsis:\n"
"current time in time zone Pacific/Nauru\n"
" " << argv[0] << " -c -z Pacific/Nauru\n"
"dump information about the current time zone\n"
" " << argv[0] << " -d\n"
"output some GMT times in the time zone\n"
" " << argv[0] << " '2017-03-26 01:00:00' '2017-03-26 00:59:59'\n"
"\n"
"Options:\n"
" -a list all valid time zones\n"
" -z <timezone> specify time zone (default: system time zone)\n"
" -Z output time zone of the system\n"
" -d dump time zone informations\n"
" -c output current time in the specified time zone\n"
" -u print current utc time\n"
" -r reverse\n"
" -e early flag (with -r take earlier time if ambiguous)\n"
" -l late flag (with -r take later time if ambiguous)\n"
" -v output previous and next change of dst\n";
}
cxxtools::Arg<std::string> timeZone(argc, argv, 'z', cxxtools::Tz::currentZone());
cxxtools::Tz tz(timeZone);
cxxtools::Arg<bool> dump(argc, argv, 'd');
cxxtools::Arg<bool> listAll(argc, argv, 'a');
cxxtools::Arg<bool> currentTime(argc, argv, 'c');
cxxtools::Arg<bool> utc(argc, argv, 'u');
cxxtools::Arg<bool> currentTimeZone(argc, argv, 'Z');
cxxtools::Arg<bool> reverse(argc, argv, 'r');
cxxtools::Arg<bool> early(argc, argv, 'e');
cxxtools::Arg<bool> late(argc, argv, 'l');
cxxtools::Arg<bool> verbose(argc, argv, 'v'); // show previous and next change
if (dump)
{
std::cout << timeZone.getValue() << '\n';
tz.dump(std::cout);
}
if (listAll)
{
auto l = cxxtools::Tz::getTimeZones();
for (auto z: l)
std::cout << z << '\n';
}
if (currentTime)
{
std::cout << tz.toLocal(cxxtools::DateTime::gmtime()).toString() << '\n';
}
if (utc)
{
std::cout << cxxtools::DateTime::gmtime().toString() << '\n';
}
if (currentTimeZone)
{
std::cout << cxxtools::Tz::currentZone() << '\n';
}
for (int a = 1; a < argc; ++a)
{
cxxtools::DateTime dt(argv[a]);
if (reverse)
{
cxxtools::UtcDateTime dtz;
if (early)
dtz = tz.toUtc(cxxtools::LocalDateTime(dt), 1);
else if (late)
dtz = tz.toUtc(cxxtools::LocalDateTime(dt), 0);
else
dtz = tz.toUtc(cxxtools::LocalDateTime(dt));
std::cout << dtz.toString() << '\n';
}
else
{
auto dtz = tz.toLocal(cxxtools::UtcDateTime(dt));
std::cout << dtz.toString() << ' ' << dtz.tzName() << ' ' << dtz.isdst();
if (verbose)
std::cout << " previous change: " << tz.previousChange(dtz).toString()
<< " next change: " << tz.nextChange(dtz).toString();
std::cout << '\n';
}
}
}
catch (const std::exception& e)
{
std::cerr << e.what() << std::endl;
}
}
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