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NAMEBadger::Duration - simple class for representing durations SYNOPSIS use Badger::Duration 'Duration';
my $d = Duration('7 days 4 hours 20 minutes');
print "$d is ", $d->seconds, " seconds\n";
DESCRIPTIONThis is a simple module for parsing durations. It is ideally suited for things like the calculation of expiry times (e.g. for cookies, items in a cache, etc) allowing them to be specified in human-friendly format, e.g. "4 minutes 20 seconds" (or various alternatives). EXPORTABLE SUBROUTINESDURATIONThis is a shortcut alias to "Badger::Duration". use Badger::Duration 'DURATION';
my $duration = DURATION->new(
hours => 4,
minutes => 20,
); # same as Badger::Duration->new(...);
Duration()This subroutine returns the name of the "Badger::Duration" class when called without arguments. Thus it can be used as an alias for "Badger::Duration" as per DURATION. use Badger::Duration 'Duration';
my $duration = Duration->new(...); # same as Badger::Duration->new(...);
When called with arguments, it creates a new "Badger::Duration" object. my $duration = Duration(...); # same as Badger::Duration->new(...); METHODSThe following methods are defined in addition to those inherited from the Badger::Comparable and Badger::Base base classes. new()Constructor method to create a new "Badger::Duration" object. The duration can be specified as a single "duration" parameter. my $d = Badger::Duration->new(
duration => '4 minutes 20 seconds'
);
The duration string can contain any number of "<number> <duration>" sequences separate by whitespace, commas or the word "and". The following are all valid: 4 minutes 20 seconds
4 minutes,20 seconds
4 minutes, 20 seconds
4 minutes and 20 seconds
The canonical names for durations are: "year", "month", "day", "hour", "minute" and "second". The following aliases may be used:
A duration can also be specified using named parameters: my $d = Badger::Duration->new(
minutes => 4,
seconds => 20,
);
Or by reference to a hash array: my $d = Badger::Duration->new({
minutes => 4,
seconds => 20,
});
This can also be specified as an explicit "duration" option if you prefer: my $d = Badger::Duration->new(
duration => {
minutes => 4,
seconds => 20,
}
);
In all cases, any of the valid aliases for durations may be used, e.g. my $d = Badger::Duration->new(
h => 1,
m => 4,
s => 20,
);
duration()Returns a reference to a hash array containing the canonical values of the duration. my $d = Badger::Duration->new(
duration => '4 hours 20 minutes'
);
my $h = $d->duration;
print $h->{ hour }; # 4
print $h->{ minute }; # 20
seconds()Returns the total number of seconds for the duration. my $d = Badger::Duration->new(
duration => '4 hours 20 minutes'
);
print $d->seconds; # 15600
compare($that)This method is defined to enable the functionality provided by the Badger::Comparable base class. use Badger::Duration 'Duration';
my $d1 = Duration('4 hours 20 minutes');
my $d2 = Duration('270 minutes');
if ($d1 < $d2) {
# ...do something...
}
text()Returns a canonical text representation of the duration. use Badger::Duration 'Duration';
my $d1 = Duration('4 hrs 20 mins');
print $d1->text; # 4 hours 20 minutes
Note that the units will be pluralised appropriately. e.g. 1 hour 1 minute 1 second
2 hours 2 minutes 2 seconds
This method is bound to the auto-stringification operation which is a fancy way of saying it gets called automatically when you simply print a "Badger::Duration" object. print $d1; # 4 hours 20 minutes INTERNAL METHODSinit($config)Object initialisation method called automatically by the new() constructor method inherited from the Badger::Base base class. parse_text($text)Internal method to parse a text string and return a hash reference of canonical values. parse_hash($hash)Internal method to parse a hash reference and return another hash reference of canonical values (e.g. after mapping aliases to canonical names). count_seconds($hash)Counts the total number of seconds in a duration passed by reference to a hash array. AUTHORAndy Wardley <http://wardley.org> COPYRIGHTCopyright (C) 2013 Andy Wardley. All Rights Reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
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