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package DateTimeX::Format::CustomPattern; |
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6417
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use Moose::Role; |
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use strict; |
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use warnings; |
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use Carp; |
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use namespace::clean -except => 'meta'; |
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has 'pattern' => ( |
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isa => 'Maybe[Str]' |
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, is => 'rw' |
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, required => 1 |
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, predicate => 'has_pattern' |
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); |
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around 'parse_datetime' => sub { |
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my ( $sub, $self, $time, $env, @args ) = @_; |
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croak "The key 'override' is not present in the env HashRef" |
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unless exists $env->{override} |
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; |
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croak '"time" is a required argument "time" for ->parse_datetime($time ...);' |
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unless defined $time; |
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; |
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## Set Pattern: from args, then from object |
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my $pattern; |
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if ( defined $env->{override}{pattern} ) { |
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$pattern = $env->{override}{pattern} |
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} |
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elsif ( $self->has_pattern ) { |
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$pattern = $self->pattern; |
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} |
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else { |
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croak "No pattern supplied to constructor or the call to parse_datetime" |
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} |
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$env->{ pattern } = $pattern; |
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## Calls the sub ( time, env, addtl args ) |
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my $dt = $self->$sub( $time , $env , @args ); |
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}; |
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## KEEP IT HERE -- Roles in this care *ARE* order specific |
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with 'DateTimeX::Format'; |
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1; |
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__END__ |
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=head1 NAME |
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DateTimeX::Format::CustomPattern - A Moose::Role for building DateTime Formats that require patterns |
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=head1 DESCRIPTION |
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It adds an attribute "pattern", and behavies consistant with the call-overriding environment of L<DateTimeX::Format>. |
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=head1 SYNOPSIS |
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package DateTimeX::Format::RequiresPattern; |
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use Moose; |
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with 'DateTimeX::Format::CustomPattern'; |
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package main; |
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my $dt = DateTimeX::Format::RequiresPattern->new({ |
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locale => $locale |
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, time_zone => $timezone |
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, pattern => '%H:%M:%S' |
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, debug => 0|1 |
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, defaults => 0|1 |
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}); |
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$dt->parse_datetime( $time, {pattern => '%H:%M'} ); |
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=head1 OBJECT ENVIRONMENT |
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All of these slots correspond to your object environment: they can be supplied in the constructor, or through accessors. |
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84
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=over 4 |
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86
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=item * pattern( $str ) |
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88
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Can be overridden in the call to ->parse_datetime. |
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90
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=back |