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package DateTime::Format::DateParse; |
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# Copyright (C) 2005-6 Joshua Hoblitt |
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# |
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# $Id: DateParse.pm 3517 2006-09-17 23:10:10Z jhoblitt $ |
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use strict; |
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use vars qw($VERSION); |
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$VERSION = '0.04'; |
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use DateTime; |
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use DateTime::TimeZone; |
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use Date::Parse qw( strptime ); |
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use Time::Zone qw( tz_offset ); |
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sub parse_datetime { |
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my ($class, $date, $zone) = @_; |
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# str2time() calls strptime() internally so it's more efficent to use |
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# strptime() directly. However, the extra validation done by using |
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# DateTime->new() instad of DateTime->from_epoch() may make it into a net |
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# loss. In the end, it turns out that strptime()'s offset information is |
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# needed anyways. |
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my @t = strptime( $date, $zone ); |
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return undef unless @t; |
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my ($ss, $mm, $hh, $day, $month, $year, $offset) = @t; |
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my %p; |
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if ( $ss ) { |
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my $fraction = $ss - int( $ss ); |
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$p{ nanosecond } = $fraction * 1e9 if $fraction; |
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$p{ second } = int $ss; |
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} |
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$p{ minute } = $mm if $mm; |
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$p{ hour } = $hh if $hh; |
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$p{ day } = $day if $day; |
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$p{ month } = $month + 1 if $month; |
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$p{ year } = $year ? $year + 1900 : DateTime->now->year; |
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# unless there is an explict ZONE, Date::Parse seems to parse date only |
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# formats, eg. "1995-01-24", as being in the 'local' timezone. |
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unless ( defined $zone || defined $offset ) { |
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return DateTime->new( |
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%p, |
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time_zone => 'local', |
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); |
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} |
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if ( $zone ) { |
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if ( DateTime::TimeZone->is_valid_name( $zone ) ) { |
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return DateTime->new( |
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%p, |
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time_zone => $zone, |
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); |
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} else { |
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# attempt to convert Time::Zone tz's into an offset |
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return DateTime->new( |
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%p, |
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time_zone => |
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# not an Olson timezone, no DST info |
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DateTime::TimeZone::offset_as_string( tz_offset( $zone ) ), |
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); |
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} |
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} |
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return DateTime->new( |
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%p, |
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time_zone => |
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# not an Olson timezone, no DST info |
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DateTime::TimeZone::offset_as_string( $offset ), |
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); |
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} |
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1; |
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__END__ |