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#!/usr/bin/perl |
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package Devel::Events::Filter::RemoveFields; |
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use Moose; |
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with qw/Devel::Events::Filter/; |
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has fields => ( |
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isa => "ArrayRef", |
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is => "ro", |
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required => 1, |
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auto_deref => 1, |
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); |
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has _fields_hash => ( |
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isa => "HashRef", |
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is => "ro", |
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lazy => 1, |
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default => sub { |
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my $self = shift; |
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return { map { $_ => undef } $self->fields }; |
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} |
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); |
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sub filter_event { |
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my ( $self, $type, @data ) = @_; |
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my $fields = $self->_fields_hash; |
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my @ret; |
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while ( @data ) { |
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my ( $key, $value ) = splice( @data, 0, 2 ); |
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push @ret, $key, $value unless exists $fields->{$key}; |
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} |
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return ( $type, @ret ); |
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} |
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__PACKAGE__; |
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__END__ |
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=pod |
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=head1 NAME |
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Devel::Events::Filter::RemoveFields - Remove certain fields from events |
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=head1 SYNOPSIS |
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use Devel::Events::Filter::RemoveFields; |
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my $f = Devel::Events::Filter::RemoveFields->new( |
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fields => [qw/generator/], |
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handler => $h, |
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); |
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# all events delivered to $f will be proxied to $h without any 'generator' |
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# field. |
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# field order and multiple instances of a field won't be affected |
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=head1 DESCRIPTION |
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This simple filter will remove all instances of a certain field in an event. |
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=head1 ATTRIBUTES |
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=over 4 |
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=item fields |
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An array reference. |
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Tbe list of fields to remove from the event data. |
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=back |
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=head1 METHODS |
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=over 4 |
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=item filter_event @event |
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Removes the fields specified in C<fields> from the event data. |
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=back |
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=cut |
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