92 lines
3.0 KiB
Perl
92 lines
3.0 KiB
Perl
package DDG::Goodie::CalendarConversion;
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# ABSTRACT: convert between various calendars.
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use strict;
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use DDG::Goodie;
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with 'DDG::GoodieRole::Dates';
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use Date::Hijri;
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use Date::Jalali2;
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use YAML::XS 'LoadFile';
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zci answer_type => "calendar_conversion";
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zci is_cached => 0;
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primary_example_queries '22/8/2003 to the hijri calendar';
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secondary_example_queries '23/6/1424 hijri to gregorian';
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description 'convert dates from the Gregorian calendar to the Hijri/Jalali calendars and back';
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name 'CalendarConversion';
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code_url 'https://github.com/duckduckgo/zeroclickinfo-goodies/blob/master/lib/DDG/Goodie/CalendarConversion.pm';
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category 'dates';
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topics 'special_interest';
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attribution github => ['http://github.com/mattlehning', 'mattlehning'],
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github => ['http://github.com/ehsan', 'ehsan'];
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triggers any => 'hijri', 'gregorian', 'jalali';
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my $calendars = LoadFile(share('calendars.yml'));
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my $datestring_regex = datestring_regex();
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sub format_date {
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my ($d, $m, $y, $cal) = @_;
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return join(' ', $d, $calendars->{$cal}->[$m - 1], $y, '(' . ucfirst $cal . ')');
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}
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handle query_lc => sub {
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return unless my ($datestring, $input_calendar, $output_calendar) = $_ =~ /^
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($datestring_regex)\s+
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(?:
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(?:(?:in|on(?:\s+the))?)\s*
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((?:gregorian|hijri|jalali)?)\s+
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(?:calendar|date|time)?\s*
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(?:is\s+)?
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)?
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(?:
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(?:(?:in|on|to)(?:\s+the|in)?)\s+
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)?
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(gregorian|hijri|jalali)\s*
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(?:calendar|date|time|years)?
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$/x;
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my $in_date = parse_datestring_to_date($datestring);
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return unless $in_date;
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my ($d, $m, $y) = ($in_date->day, $in_date->month, $in_date->year);
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$input_calendar ||= 'gregorian'; # gregorian is the default
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return if ($input_calendar eq $output_calendar || !$output_calendar);
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my ($od, $om, $oy);
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if ($input_calendar eq "hijri") {
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($od, $om, $oy) = h2g($d, $m, $y); # To Gregorian;
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($od, $om, $oy) = g2j($od, $om, $oy) if ($output_calendar eq "jalali");
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} elsif ($input_calendar eq "gregorian") {
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($od, $om, $oy) = g2h($d, $m, $y) if ($output_calendar eq "hijri");
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($od, $om, $oy) = g2j($d, $m, $y) if ($output_calendar eq "jalali");
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} elsif ($input_calendar eq "jalali") {
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my $t = new Date::Jalali2($y, $m, $d, 1);
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($od, $om, $oy) = ($t->jal_day, $t->jal_month, $t->jal_year);
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($od, $om, $oy) = g2h($od, $om, $oy) if ($output_calendar eq "hijri");
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}
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my $input_date = format_date($d, $m, $y, $input_calendar);
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my $converted_date = format_date($od, $om, $oy, $output_calendar);
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return $input_date . ' is ' . $converted_date,
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structured_answer => {
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input => [$input_date],
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operation => 'Calendar conversion',
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result => $converted_date
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};
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};
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sub g2j {
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my ($id, $im, $iy) = @_;
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my $t = new Date::Jalali2($iy, $im, $id, 0);
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return ($t->jal_day, $t->jal_month, $t->jal_year);
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}
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1;
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