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/lib64/perl5/vendor_perl/DateTime/

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[ NAME ]	[ SIZE ]	[ PERM ]	[ DATE ]	[ ACTN ]
+FILE +DIR
Duration.pm	17.296 KB	-rw-r--r--	2017-08-02 05:36	R E G D
Helpers.pm	0.406 KB	-rw-r--r--	2017-08-02 05:36	R E G D
Infinite.pm	4.686 KB	-rw-r--r--	2017-08-02 05:36	R E G D
LeapSecond.pm	4.131 KB	-rw-r--r--	2017-08-02 05:36	R E G D
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package DateTime::Duration; { $DateTime::Duration::VERSION = '1.04'; } use strict; use warnings; use Carp (); use DateTime; use DateTime::Helpers; use Params::Validate qw( validate SCALAR ); use overload ( fallback => 1, '+' => '_add_overload', '-' => '_subtract_overload', '*' => '_multiply_overload', '<=>' => '_compare_overload', 'cmp' => '_compare_overload', ); use constant MAX_NANOSECONDS => 1_000_000_000; # 1E9 = almost 32 bits my @all_units = qw( months days minutes seconds nanoseconds ); # XXX - need to reject non-integers but accept infinity, NaN, & # 1.56e+18 sub new { my $class = shift; my %p = validate( @_, { years => { type => SCALAR, default => 0 }, months => { type => SCALAR, default => 0 }, weeks => { type => SCALAR, default => 0 }, days => { type => SCALAR, default => 0 }, hours => { type => SCALAR, default => 0 }, minutes => { type => SCALAR, default => 0 }, seconds => { type => SCALAR, default => 0 }, nanoseconds => { type => SCALAR, default => 0 }, end_of_month => { type => SCALAR, default => undef, regex => qr/^(?:wrap|limit|preserve)$/ }, } ); my $self = bless {}, $class; $self->{months} = ( $p{years} * 12 ) + $p{months}; $self->{days} = ( $p{weeks} * 7 ) + $p{days}; $self->{minutes} = ( $p{hours} * 60 ) + $p{minutes}; $self->{seconds} = $p{seconds}; if ( $p{nanoseconds} ) { $self->{nanoseconds} = $p{nanoseconds}; $self->_normalize_nanoseconds; } else { # shortcut - if they don't need nanoseconds $self->{nanoseconds} = 0; } $self->{end_of_month} = ( defined $p{end_of_month} ? $p{end_of_month} : $self->{months} < 0 ? 'preserve' : 'wrap' ); return $self; } # make the signs of seconds, nanos the same; 0 < abs(nanos) < MAX_NANOS # NB this requires nanoseconds != 0 (callers check this already) sub _normalize_nanoseconds { my $self = shift; return if ( $self->{nanoseconds} == DateTime::INFINITY() || $self->{nanoseconds} == DateTime::NEG_INFINITY() || $self->{nanoseconds} eq DateTime::NAN() ); my $seconds = $self->{seconds} + $self->{nanoseconds} / MAX_NANOSECONDS; $self->{seconds} = int($seconds); $self->{nanoseconds} = $self->{nanoseconds} % MAX_NANOSECONDS; $self->{nanoseconds} -= MAX_NANOSECONDS if $seconds < 0; } sub clone { bless { %{ $_[0] } }, ref $_[0] } sub years { abs( $_[0]->in_units('years') ) } sub months { abs( $_[0]->in_units( 'months', 'years' ) ) } sub weeks { abs( $_[0]->in_units('weeks') ) } sub days { abs( $_[0]->in_units( 'days', 'weeks' ) ) } sub hours { abs( $_[0]->in_units('hours') ) } sub minutes { abs( $_[0]->in_units( 'minutes', 'hours' ) ) } sub seconds { abs( $_[0]->in_units('seconds') ) } sub nanoseconds { abs( $_[0]->in_units( 'nanoseconds', 'seconds' ) ) } sub is_positive { $_[0]->_has_positive && !$_[0]->_has_negative } sub is_negative { !$_[0]->_has_positive && $_[0]->_has_negative } sub _has_positive { ( grep { $_ > 0 } @{ $_[0] }{@all_units} ) ? 1 : 0; } sub _has_negative { ( grep { $_ < 0 } @{ $_[0] }{@all_units} ) ? 1 : 0; } sub is_zero { return 0 if grep { $_ != 0 } @{ $_[0] }{@all_units}; return 1; } sub delta_months { $_[0]->{months} } sub delta_days { $_[0]->{days} } sub delta_minutes { $_[0]->{minutes} } sub delta_seconds { $_[0]->{seconds} } sub delta_nanoseconds { $_[0]->{nanoseconds} } sub deltas { map { $_ => $_[0]->{$_} } @all_units; } sub in_units { my $self = shift; my @units = @_; my %units = map { $_ => 1 } @units; my %ret; my ( $months, $days, $minutes, $seconds ) = @{$self}{qw( months days minutes seconds )}; if ( $units{years} ) { $ret{years} = int( $months / 12 ); $months -= $ret{years} * 12; } if ( $units{months} ) { $ret{months} = $months; } if ( $units{weeks} ) { $ret{weeks} = int( $days / 7 ); $days -= $ret{weeks} * 7; } if ( $units{days} ) { $ret{days} = $days; } if ( $units{hours} ) { $ret{hours} = int( $minutes / 60 ); $minutes -= $ret{hours} * 60; } if ( $units{minutes} ) { $ret{minutes} = $minutes; } if ( $units{seconds} ) { $ret{seconds} = $seconds; $seconds = 0; } if ( $units{nanoseconds} ) { $ret{nanoseconds} = $seconds * MAX_NANOSECONDS + $self->{nanoseconds}; } wantarray ? @ret{@units} : $ret{ $units[0] }; } sub is_wrap_mode { $_[0]->{end_of_month} eq 'wrap' ? 1 : 0 } sub is_limit_mode { $_[0]->{end_of_month} eq 'limit' ? 1 : 0 } sub is_preserve_mode { $_[0]->{end_of_month} eq 'preserve' ? 1 : 0 } sub end_of_month_mode { $_[0]->{end_of_month} } sub calendar_duration { my $self = shift; return ( ref $self ) ->new( map { $_ => $self->{$_} } qw( months days end_of_month ) ); } sub clock_duration { my $self = shift; return ( ref $self ) ->new( map { $_ => $self->{$_} } qw( minutes seconds nanoseconds end_of_month ) ); } sub inverse { my $self = shift; my %p = @_; my %new; foreach my $u (@all_units) { $new{$u} = $self->{$u}; # avoid -0 bug $new{$u} *= -1 if $new{$u}; } $new{end_of_month} = $p{end_of_month} if exists $p{end_of_month}; return ( ref $self )->new(%new); } sub add_duration { my ( $self, $dur ) = @_; foreach my $u (@all_units) { $self->{$u} += $dur->{$u}; } $self->_normalize_nanoseconds if $self->{nanoseconds}; return $self; } sub add { my $self = shift; return $self->add_duration( ( ref $self )->new(@_) ); } sub subtract_duration { return $_[0]->add_duration( $_[1]->inverse ) } sub subtract { my $self = shift; return $self->subtract_duration( ( ref $self )->new(@_) ); } sub multiply { my $self = shift; my $multiplier = shift; foreach my $u (@all_units) { $self->{$u} *= $multiplier; } $self->_normalize_nanoseconds if $self->{nanoseconds}; return $self; } sub compare { my ( $class, $dur1, $dur2, $dt ) = @_; $dt ||= DateTime->now; return DateTime->compare( $dt->clone->add_duration($dur1), $dt->clone->add_duration($dur2) ); } sub _add_overload { my ( $d1, $d2, $rev ) = @_; ( $d1, $d2 ) = ( $d2, $d1 ) if $rev; if ( DateTime::Helpers::isa( $d2, 'DateTime' ) ) { $d2->add_duration($d1); return; } # will also work if $d1 is a DateTime.pm object return $d1->clone->add_duration($d2); } sub _subtract_overload { my ( $d1, $d2, $rev ) = @_; ( $d1, $d2 ) = ( $d2, $d1 ) if $rev; Carp::croak( "Cannot subtract a DateTime object from a DateTime::Duration object") if DateTime::Helpers::isa( $d2, 'DateTime' ); return $d1->clone->subtract_duration($d2); } sub _multiply_overload { my $self = shift; my $new = $self->clone; return $new->multiply(@_); } sub _compare_overload { Carp::croak( 'DateTime::Duration does not overload comparison.' . ' See the documentation on the compare() method for details.' ); } 1; # ABSTRACT: Duration objects for date math __END__ =pod =head1 NAME DateTime::Duration - Duration objects for date math =head1 VERSION version 1.04 =head1 SYNOPSIS use DateTime::Duration; $dur = DateTime::Duration->new( years => 3, months => 5, weeks => 1, days => 1, hours => 6, minutes => 15, seconds => 45, nanoseconds => 12000 ); my ( $days, $hours, $seconds ) = $dur->in_units('days', 'hours', 'seconds'); # Human-readable accessors, always positive, but consider using # DateTime::Format::Duration instead $dur->years; $dur->months; $dur->weeks; $dur->days; $dur->hours; $dur->minutes; $dur->seconds; $dur->nanoseconds; $dur->is_wrap_mode $dur->is_limit_mode $dur->is_preserve_mode print $dur->end_of_month_mode; # Multiply all values by -1 my $opposite = $dur->inverse; my $bigger = $dur1 + $dur2; my $smaller = $dur1 - $dur2; # the result could be negative my $bigger = $dur1 * 3; my $base_dt = DateTime->new( year => 2000 ); my @sorted = sort { DateTime::Duration->compare( $a, $b, $base_dt ) } @durations; if ( $dur->is_positive ) { ... } if ( $dur->is_zero ) { ... } if ( $dur->is_negative ) { ... } =head1 DESCRIPTION This is a simple class for representing duration objects. These objects are used whenever you do date math with DateTime.pm. See the L section of the DateTime.pm documentation for more details. The short course: One cannot in general convert between seconds, minutes, days, and months, so this class will never do so. Instead, create the duration with the desired units to begin with, for example by calling the appropriate subtraction/delta method on a C object. =head1 METHODS Like C itself, C returns the object from mutator methods in order to make method chaining possible. C has the following methods: =head2 DateTime::Duration->new( ... ) This method takes the parameters "years", "months", "weeks", "days