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=head1 VERSION |
=head1 VERSION |
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Version 0.05 |
Version 0.06 |
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=cut |
=cut |
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our $VERSION = '0.05'; |
our $VERSION = '0.06'; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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code defined as code ref on format after field substitution to producing |
code defined as code ref on format after field substitution to producing |
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output |
output |
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There is one built-in filter called C<regex> which can be use like this: |
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filter{regex(s/foo/bar/)} |
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=item * |
=item * |
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optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
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$log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l); |
$log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l); |
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if ($self->{filter} && ! $self->{filter}->{regex}) { |
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$log->debug("adding built-in filter regex"); |
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$self->{filter}->{regex} = sub { |
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my ($val, $regex) = @_; |
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eval "\$val =~ $regex"; |
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return $val; |
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}; |
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} |
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$self ? return $self : return undef; |
$self ? return $self : return undef; |
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} |
} |
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my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
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Filters are implemented here. While simple form of filters looks like this: |
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filter{name_of_filter} |
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but, filters can also have variable number of parametars like this: |
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filter{name_of_filter(param,param,param)} |
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=cut |
=cut |
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sub parse { |
sub parse { |
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return if (! $self->_eval($eval)); |
return if (! $self->_eval($eval)); |
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} |
} |
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if ($filter_name && $self->{'filter'}->{$filter_name}) { |
if ($filter_name) { |
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$log->debug("about to filter{$filter_name} format: $out"); |
my @filter_args; |
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$out = $self->{'filter'}->{$filter_name}->($out); |
if ($filter_name =~ s/(\w+)\((.*)\)/$1/) { |
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return unless(defined($out)); |
@filter_args = split(/,/, $2); |
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$log->debug("filter result: $out"); |
} |
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if ($self->{'filter'}->{$filter_name}) { |
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$log->debug("about to filter{$filter_name} format: $out with arguments: ", join(",", @filter_args)); |
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unshift @filter_args, $out; |
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$out = $self->{'filter'}->{$filter_name}->(@filter_args); |
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return unless(defined($out)); |
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$log->debug("filter result: $out"); |
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} else { |
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$log->warn("trying to use undefined filter $filter_name"); |
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} |
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} |
} |
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return $out; |
return $out; |