/[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 540 by dpavlin, Thu Jun 29 15:29:41 2006 UTC revision 542 by dpavlin, Thu Jun 29 21:18:59 2006 UTC
# Line 17  use strict; Line 17  use strict;
17    
18  #use base qw/WebPAC::Common/;  #use base qw/WebPAC::Common/;
19  use Data::Dumper;  use Data::Dumper;
20    use Encode qw/from_to/;
21    
22  =head1 NAME  =head1 NAME
23    
# Line 24  WebPAC::Normalize - describe normalisato Line 25  WebPAC::Normalize - describe normalisato
25    
26  =head1 VERSION  =head1 VERSION
27    
28  Version 0.05  Version 0.06
29    
30  =cut  =cut
31    
32  our $VERSION = '0.05';  our $VERSION = '0.06';
33    
34  =head1 SYNOPSIS  =head1 SYNOPSIS
35    
# Line 57  Return data structure Line 58  Return data structure
58          lookup => $lookup->lookup_hash,          lookup => $lookup->lookup_hash,
59          row => $row,          row => $row,
60          rules => $normalize_pl_config,          rules => $normalize_pl_config,
61            marc_encoding => 'utf-8',
62    );    );
63    
64  Options C<lookup>, C<row>, C<rules> and C<log> are mandatory while all  Options C<lookup>, C<row>, C<rules> and C<log> are mandatory while all
# Line 78  sub data_structure { Line 80  sub data_structure {
80          no strict 'subs';          no strict 'subs';
81          _set_lookup( $arg->{lookup} );          _set_lookup( $arg->{lookup} );
82          _set_rec( $arg->{row} );          _set_rec( $arg->{row} );
83          _clean_ds();          _clean_ds( %{ $arg } );
   
84          eval "$arg->{rules}";          eval "$arg->{rules}";
85          die "error evaling $arg->{rules}: $@\n" if ($@);          die "error evaling $arg->{rules}: $@\n" if ($@);
86    
# Line 110  Return hash formatted as data structure Line 111  Return hash formatted as data structure
111    
112  my $out;  my $out;
113  my $marc21;  my $marc21;
114    my $marc_encoding;
115    
116  sub _get_ds {  sub _get_ds {
117          return $out;          return $out;
# Line 124  Clean data structure hash for next recor Line 126  Clean data structure hash for next recor
126  =cut  =cut
127    
128  sub _clean_ds {  sub _clean_ds {
129            my $a = {@_};
130          $out = undef;          $out = undef;
131          $marc21 = undef;          $marc21 = undef;
132            $marc_encoding = $a->{marc_encoding};
133  }  }
134    
135  =head2 _set_lookup  =head2 _set_lookup
# Line 148  Get all fields defined by calls to C<mar Line 152  Get all fields defined by calls to C<mar
152    
153          $marc->add_fields( WebPAC::Normalize:_get_marc21_fields() );          $marc->add_fields( WebPAC::Normalize:_get_marc21_fields() );
154    
155    B<TODO>: implement exceptions to magic which unrolls repeated subfields
156    as new field with that subfield.
157    
158  =cut  =cut
159    
160  sub _get_marc21_fields {  sub _get_marc21_fields {
161          return @{$marc21};          my @m;
162            my $last;
163            foreach my $row (@{ $marc21 }) {
164                    if ($last && (
165                            $last->[0] eq $row->[0] ||              # check if field is same
166                            $last->[1] eq $row->[1] ||              # check for i1
167                            $last->[2] eq $row->[2]                 # and for i2
168                    ) ) {
169                            $last->[3]->{ $row->[3] } = $row->[4];
170                            warn "## ++ added $row->[0] ^$row->[3]\n";
171                            next;
172                    } elsif ($last) {
173                            push @m, $last;
174                    }
175    
176                    push @m, $row;
177            }
178    
179            push @m, $last if ($last);
180    
181            return @m;
182  }  }
183    
184  =head1 Functions to create C<data_structure>  =head1 Functions to create C<data_structure>
# Line 222  sub marc21 { Line 249  sub marc21 {
249    
250          my $sf = shift or die "marc21 needs subfield";          my $sf = shift or die "marc21 needs subfield";
251    
252          foreach my $v (@_) {          foreach (@_) {
253                    my $v = $_;             # make var read-write for Encode
254                    next unless (defined($v) && $v !~ /^\s+$/);
255                    from_to($v, 'iso-8859-2', $marc_encoding) if ($marc_encoding);
256                  push @{ $marc21 }, [ $f, ' ', ' ', $sf => $v ];                  push @{ $marc21 }, [ $f, ' ', ' ', $sf => $v ];
257          }          }
258  }  }
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