/[webpac2]/trunk/lib/WebPAC/Input.pm
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revision 339 by dpavlin, Sat Dec 31 16:50:11 2005 UTC revision 416 by dpavlin, Sun Feb 26 23:21:50 2006 UTC
# Line 14  WebPAC::Input - read different file form Line 14  WebPAC::Input - read different file form
14    
15  =head1 VERSION  =head1 VERSION
16    
17  Version 0.03  Version 0.04
18    
19  =cut  =cut
20    
21  our $VERSION = '0.03';  our $VERSION = '0.04';
22    
23  =head1 SYNOPSIS  =head1 SYNOPSIS
24    
# Line 47  Perhaps a little code snippet. Line 47  Perhaps a little code snippet.
47      );      );
48    
49      $db->open('/path/to/database');      $db->open('/path/to/database');
50      print "database size: ",$db->size,"\n";          print "database size: ",$db->size,"\n";
51      while (my $rec = $db->fetch) {          while (my $rec = $db->fetch) {
52      }                  # do something with $rec
53            }
54    
55    
56    
# Line 63  Create new input database object. Line 64  Create new input database object.
64          module => 'WebPAC::Input::MARC',          module => 'WebPAC::Input::MARC',
65          code_page => 'ISO-8859-2',          code_page => 'ISO-8859-2',
66          low_mem => 1,          low_mem => 1,
67            recode => 'char pairs',
68    );    );
69    
70  C<module> is low-level file format module. See L<WebPAC::Input::Isis> and  C<module> is low-level file format module. See L<WebPAC::Input::Isis> and
# Line 183  sub open { Line 185  sub open {
185          # create Text::Iconv object          # create Text::Iconv object
186          $self->{iconv} = Text::Iconv->new($code_page,$self->{'code_page'});          $self->{iconv} = Text::Iconv->new($code_page,$self->{'code_page'});
187    
188            my $filter_ref;
189    
190            if ($self->{recode}) {
191                    my @r = split(/\s/, $self->{recode});
192                    if ($#r % 2 != 1) {
193                            $log->logwarn("recode needs even number of elements (some number of valid pairs)");
194                    } else {
195                            my $recode;
196                            while (@r) {
197                                    my $from = shift @r;
198                                    my $to = shift @r;
199                                    $recode->{$from} = $to;
200                            }
201    
202                            my $regex = join '|' => keys %{ $recode };
203    
204                            $log->debug("using recode regex: $regex");
205                            
206                            $filter_ref = sub {
207                                    my $t = shift;
208                                    $t =~ s/($regex)/$recode->{$1}/g;
209                                    return $t;
210                            };
211    
212                    }
213    
214            }
215    
216          my ($db, $size) = $self->{open_db}->( $self,          my ($db, $size) = $self->{open_db}->( $self,
217                  path => $arg->{path},                  path => $arg->{path},
218                    filter => $filter_ref,
219          );          );
220    
221          unless ($db) {          unless ($db) {
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