/[webpac2]/trunk/lib/WebPAC/Normalize.pm
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 252 by dpavlin, Thu Dec 15 17:01:04 2005 UTC revision 268 by dpavlin, Fri Dec 16 21:09:42 2005 UTC
# Line 11  WebPAC::Normalize - data mungling for no Line 11  WebPAC::Normalize - data mungling for no
11    
12  =head1 VERSION  =head1 VERSION
13    
14  Version 0.04  Version 0.06
15    
16  =cut  =cut
17    
18  our $VERSION = '0.04';  our $VERSION = '0.06';
19    
20  =head1 SYNOPSIS  =head1 SYNOPSIS
21    
# Line 47  optional C<filter{filter_name}> at B<beg Line 47  optional C<filter{filter_name}> at B<beg
47  code defined as code ref on format after field substitution to producing  code defined as code ref on format after field substitution to producing
48  output  output
49    
50    There is one built-in filter called C<regex> which can be use like this:
51    
52      filter{regex(s/foo/bar/)}
53    
54  =item *  =item *
55    
56  optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>.  optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>.
# Line 119  sub new { Line 123  sub new {
123    
124          $log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l);          $log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l);
125    
126            if ($self->{filter} && ! $self->{filter}->{regex}) {
127                    $log->debug("adding built-in filter regex");
128                    $self->{filter}->{regex} = sub {
129                            my ($val, $regex) = @_;
130                            eval "\$val =~ $regex";
131                            return $val;
132                    };
133            }
134    
135          $self ? return $self : return undef;          $self ? return $self : return undef;
136  }  }
137    
# Line 157  sub data_structure { Line 170  sub data_structure {
170                  $log->debug("cache miss, creating");                  $log->debug("cache miss, creating");
171          }          }
172    
         undef $self->{'currnet_filename'};  
         undef $self->{'headline'};  
   
173          my @sorted_tags;          my @sorted_tags;
174          if ($self->{tags_by_order}) {          if ($self->{tags_by_order}) {
175                  @sorted_tags = @{$self->{tags_by_order}};                  @sorted_tags = @{$self->{tags_by_order}};
# Line 278  return output or nothing depending on ev Line 288  return output or nothing depending on ev
288    
289   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);
290    
291    Filters are implemented here. While simple form of filters looks like this:
292    
293      filter{name_of_filter}
294    
295    but, filters can also have variable number of parametars like this:
296    
297      filter{name_of_filter(param,param,param)}
298    
299  =cut  =cut
300    
301    my $warn_once;
302    
303  sub parse {  sub parse {
304          my $self = shift;          my $self = shift;
305    
# Line 349  sub parse { Line 369  sub parse {
369                  return if (! $self->_eval($eval));                  return if (! $self->_eval($eval));
370          }          }
371                    
372          if ($filter_name && $self->{'filter'}->{$filter_name}) {          if ($filter_name) {
373                  $log->debug("about to filter{$filter_name} format: $out");                  my @filter_args;
374                  $out = $self->{'filter'}->{$filter_name}->($out);                  if ($filter_name =~ s/(\w+)\((.*)\)/$1/) {
375                  return unless(defined($out));                          @filter_args = split(/,/, $2);
376                  $log->debug("filter result: $out");                  }
377                    if ($self->{'filter'}->{$filter_name}) {
378                            $log->debug("about to filter{$filter_name} format: $out with arguments: ", join(",", @filter_args));
379                            unshift @filter_args, $out;
380                            $out = $self->{'filter'}->{$filter_name}->(@filter_args);
381                            return unless(defined($out));
382                            $log->debug("filter result: $out");
383                    } elsif (! $warn_once->{$filter_name}) {
384                            $log->warn("trying to use undefined filter $filter_name");
385                            $warn_once->{$filter_name}++;
386                    }
387          }          }
388    
389          return $out;          return $out;
# Line 464  sub fill_in { Line 494  sub fill_in {
494                  if ($self->{'lookup'}) {                  if ($self->{'lookup'}) {
495                          if ($self->{'lookup'}->can('lookup')) {                          if ($self->{'lookup'}->can('lookup')) {
496                                  my @lookup = $self->{lookup}->lookup($format);                                  my @lookup = $self->{lookup}->lookup($format);
497                                  $log->debug('lookup $format', join(", ", @lookup));                                  $log->debug("lookup $format", join(", ", @lookup));
498                                  return @lookup;                                  return @lookup;
499                          } else {                          } else {
500                                  $log->warn("Have lookup object but can't invoke lookup method");                                  $log->warn("Have lookup object but can't invoke lookup method");

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