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package Dancer2::Core::Time;
# ABSTRACT: class to handle common helpers for time manipulations
$Dancer2::Core::Time::VERSION = '1.1.0';
use Moo;
has seconds => (
is => 'ro',
lazy => 1,
builder => '_build_seconds',
);
sub _build_seconds {
my ($self) = @_;
my $seconds = $self->expression;
return $seconds
if $seconds =~ /^\d+$/;
return $self->_parse_duration($seconds)
}
has epoch => (
is => 'ro',
lazy => 1,
builder => '_build_epoch',
);
sub _build_epoch {
my ($self) = @_;
return $self->seconds if $self->seconds !~ /^[\-\+]?\d+$/;
$self->seconds + time;
}
has gmt_string => (
is => 'ro',
builder => '_build_gmt_string',
lazy => 1,
);
sub _build_gmt_string {
my ($self) = @_;
my $epoch = $self->epoch;
return $epoch if $epoch !~ /^\d+$/;
my ( $sec, $min, $hour, $mday, $mon, $year, $wday ) = gmtime($epoch);
my @months = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
my @days = qw(Sun Mon Tue Wed Thu Fri Sat);
return sprintf "%s, %02d-%s-%d %02d:%02d:%02d GMT",
$days[$wday],
$mday,
$months[$mon],
( $year + 1900 ),
$hour, $min, $sec;
}
has expression => (
is => 'ro',
required => 1,
);
sub BUILDARGS {
my ($class, %args) = @_;
$args{epoch} = $args{expression}
if $args{expression} =~ /^\d+$/;
return \%args;
}
# private
# This map is taken from Cache and Cache::Cache
# map of expiration formats to their respective time in seconds
#<<< no perl tidy
my %Units = ( map(($_, 1), qw(s second seconds sec secs)),
map(($_, 60), qw(m minute minutes min mins)),
map(($_, 60*60), qw(h hr hour hours)),
map(($_, 60*60*24), qw(d day days)),
map(($_, 60*60*24*7), qw(w week weeks)),
map(($_, 60*60*24*30), qw(M month months)),
map(($_, 60*60*24*365), qw(y year years)) );
#>>>
# This code is taken from Time::Duration::Parse, except if it isn't
# understood it just passes it through and it adds the current time.
sub _parse_duration {
my ( $self, $timespec ) = @_;
my $orig_timespec = $timespec;
# Treat a plain number as a number of seconds (and parse it later)
if ( $timespec =~ /^\s*([-+]?\d+(?:[.,]\d+)?)\s*$/ ) {
$timespec = "$1s";
}
# Convert hh:mm(:ss)? to something we understand
$timespec =~ s/\b(\d+):(\d\d):(\d\d)\b/$1h $2m $3s/g;
$timespec =~ s/\b(\d+):(\d\d)\b/$1h $2m/g;
my $duration = 0;
while ( $timespec
=~ s/^\s*([-+]?\d+(?:[.,]\d+)?)\s*([a-zA-Z]+)(?:\s*(?:,|and)\s*)*//i )
{
my ( $amount, $unit ) = ( $1, $2 );
$unit = lc($unit) unless length($unit) == 1;
if ( my $value = $Units{$unit} ) {
$amount =~ s/,/./;
$duration += $amount * $value;
}
else {
return $orig_timespec;
}
}
if ( $timespec =~ /\S/ ) {
return $orig_timespec;
}
return sprintf "%.0f", $duration;
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Dancer2::Core::Time - class to handle common helpers for time manipulations
=head1 VERSION
version 1.1.0
=head1 SYNOPSIS
my $time = Dancer2::Core::Time->new( expression => "1h" );
$time->seconds; # return 3600
=head1 DESCRIPTION
For consistency, whenever something needs to work with time, it
needs to be expressed in seconds, with a timestamp. Although it's very
convenient for the machine and calculations, it's not very handy for a
human-being, for instance in a configuration file.
This class provides everything needed to translate any human-understandable
expression into a number of seconds.
=head1 ATTRIBUTES
=head2 seconds
Number of seconds represented by the object. Defaults to 0.
=head2 epoch
The current epoch to handle. Defaults to seconds + time.
=head2 gmt_string
Convert the current value in epoch as a GMT string.
=head2 expression
Required. A human readable expression representing the number of seconds to provide.
The format supported is a number followed by an expression. It currently
understands:
s second seconds sec secs
m minute minutes min mins
h hr hour hours
d day days
w week weeks
M month months
y year years
Months and years are currently fixed at 30 and 365 days. This may change.
Anything else is used verbatim as the expression of a number of seconds.
Example:
2 hours, 3 days, 3d, 1 week, 3600, etc...
=head1 AUTHOR
Dancer Core Developers
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2023 by Alexis Sukrieh.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
