/[Biblio-Isis]/trunk/lib/Biblio/Isis.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 37 by dpavlin, Fri Jan 7 20:57:56 2005 UTC revision 50 by dpavlin, Fri Jul 7 21:11:01 2006 UTC
# Line 4  use strict; Line 4  use strict;
4  use Carp;  use Carp;
5  use File::Glob qw(:globally :nocase);  use File::Glob qw(:globally :nocase);
6    
 use Data::Dumper;  
   
7  BEGIN {  BEGIN {
8          use Exporter ();          use Exporter ();
9          use vars qw ($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);          use vars qw ($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
10          $VERSION     = 0.11;          $VERSION     = 0.20;
11          @ISA         = qw (Exporter);          @ISA         = qw (Exporter);
12          #Give a hoot don't pollute, do not export more than needed by default          #Give a hoot don't pollute, do not export more than needed by default
13          @EXPORT      = qw ();          @EXPORT      = qw ();
# Line 147  sub new { Line 145  sub new {
145          push @must_exist, "fdt" if ($self->{read_fdt});          push @must_exist, "fdt" if ($self->{read_fdt});
146    
147          foreach my $ext (@must_exist) {          foreach my $ext (@must_exist) {
148                  croak "missing ",uc($ext)," file in ",$self->{isisdb} unless ($self->{$ext."_file"});                  unless ($self->{$ext."_file"}) {
149                            carp "missing ",uc($ext)," file in ",$self->{isisdb};
150                            return;
151                    }
152          }          }
153    
154          print STDERR "## using files: ",join(" ",@isis_files),"\n" if ($self->{debug});          if ($self->{debug}) {
155                    print STDERR "## using files: ",join(" ",@isis_files),"\n";
156                    eval "use Data::Dump";
157    
158                    if (! $@) {
159                            *Dumper = *Data::Dump::dump;
160                    } else {
161                            use Data::Dumper;
162                    }
163            }
164    
165          # if you want to read .FDT file use read_fdt argument when creating class!          # if you want to read .FDT file use read_fdt argument when creating class!
166          if ($self->{read_fdt} && -e $self->{fdt_file}) {          if ($self->{read_fdt} && -e $self->{fdt_file}) {
# Line 199  sub new { Line 209  sub new {
209          read($self->{'fileMST'}, $buff, 4) || croak "can't read NXTMFN from MST: $!";          read($self->{'fileMST'}, $buff, 4) || croak "can't read NXTMFN from MST: $!";
210          $self->{'NXTMFN'}=unpack("V",$buff) || croak "NXTNFN is zero";          $self->{'NXTMFN'}=unpack("V",$buff) || croak "NXTNFN is zero";
211    
212          print STDERR Dumper($self),"\n" if ($self->{debug});          print STDERR "## self ",Dumper($self),"\n" if ($self->{debug});
213    
214          # open files for later          # open files for later
215          open($self->{'fileXRF'}, $self->{xrf_file}) || croak "can't open '$self->{xrf_file}': $!";          open($self->{'fileXRF'}, $self->{xrf_file}) || croak "can't open '$self->{xrf_file}': $!";
# Line 261  sub fetch { Line 271  sub fetch {
271    
272          # read XRFMFB abd XRFMFP          # read XRFMFB abd XRFMFP
273          read($self->{'fileXRF'}, $buff, 4);          read($self->{'fileXRF'}, $buff, 4);
274          my $pointer=unpack("V",$buff) || croak "pointer is null";          my $pointer=unpack("V",$buff);
275            if (! $pointer) {
276                    if ($self->{include_deleted}) {
277                            return;
278                    } else {
279                            warn "pointer for MFN $mfn is null\n";
280                            return;
281                    }
282            }
283    
284          # check for logically deleted record          # check for logically deleted record
285          if ($pointer & 0x80000000) {          if ($pointer & 0x80000000) {
# Line 390  sub to_ascii { Line 408  sub to_ascii {
408    
409          my $mfn = shift || croak "need MFN";          my $mfn = shift || croak "need MFN";
410    
411          my $rec = $self->fetch($mfn);          my $rec = $self->fetch($mfn) || return;
412    
413          my $out = "0\t$mfn";          my $out = "0\t$mfn";
414    
# Line 446  which will be used for identifiers, C<i1 Line 464  which will be used for identifiers, C<i1
464               }               }
465             ],             ],
466    
467    In case there are repeatable subfields in record, this will create
468    following structure:
469    
470      '900' => [ {
471            'a' => [ 'foo', 'bar', 'baz' ],
472      }]
473    
474  This method will also create additional field C<000> with MFN.  This method will also create additional field C<000> with MFN.
475    
476  =cut  =cut
# Line 458  sub to_hash { Line 483  sub to_hash {
483          # init record to include MFN as field 000          # init record to include MFN as field 000
484          my $rec = { '000' => [ $mfn ] };          my $rec = { '000' => [ $mfn ] };
485    
486          my $row = $self->fetch($mfn);          my $row = $self->fetch($mfn) || return;
487    
488          foreach my $k (keys %{$row}) {          foreach my $k (keys %{$row}) {
489                  foreach my $l (@{$row->{$k}}) {                  foreach my $l (@{$row->{$k}}) {
490    
491                          # filter output                          # filter output
492                          $l = $self->{'hash_filter'}->($l) if ($self->{'hash_filter'});                          if ($self->{'hash_filter'}) {
493                                    $l = $self->{'hash_filter'}->($l);
494                                    next unless defined($l);
495                            }
496    
497                          my $val;                          my $val;
498    
# Line 475  sub to_hash { Line 503  sub to_hash {
503                          if ($l =~ m/\^/) {                          if ($l =~ m/\^/) {
504                                  foreach my $t (split(/\^/,$l)) {                                  foreach my $t (split(/\^/,$l)) {
505                                          next if (! $t);                                          next if (! $t);
506                                          $val->{substr($t,0,1)} = substr($t,1);                                          my ($sf,$v) = (substr($t,0,1), substr($t,1));
507                                            warn "### $k^$sf:$v",$/ if ($self->{debug} > 1);
508                                            if (ref( $val->{$sf} ) eq 'ARRAY') {
509                                                    push @{ $val->{$sf} }, $v;
510                                            } elsif (defined( $val->{$sf} )) {
511                                                    # convert scalar field to array
512                                                    $val->{$sf} = [ $val->{$sf}, $v ];
513                                            } else {
514                                                    $val->{$sf} = $v;
515                                            }
516                                  }                                  }
517                          } else {                          } else {
518                                  $val = $l;                                  $val = $l;
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