|
|
|
1 |
package MARC::Fast; |
package MARC::Fast; |
2 |
|
|
3 |
use strict; |
use strict; |
4 |
use Carp; |
use Carp; |
5 |
use Data::Dumper; |
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 = 0.04; |
$VERSION = 0.08; |
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 (); |
23 |
|
|
24 |
use MARC::Fast; |
use MARC::Fast; |
25 |
|
|
26 |
|
my $marc = new MARC::Fast( |
27 |
|
marcdb => 'unimarc.iso', |
28 |
|
); |
29 |
|
|
30 |
|
foreach my $mfn ( 1 .. $marc->count ) { |
31 |
|
print $marc->to_ascii( $mfn ); |
32 |
|
} |
33 |
|
|
34 |
|
For longer example with command line options look at L<scripts/dump_fastmarc.pl> |
35 |
|
|
36 |
=head1 DESCRIPTION |
=head1 DESCRIPTION |
37 |
|
|
38 |
This is very fast alternative to C<MARC> and C<MARC::Record> modules. |
This is very fast alternative to C<MARC> and C<MARC::Record> modules. |
39 |
|
|
40 |
It's is also very sutable for random access to MARC records (as opposed to |
It's is also very subtable for random access to MARC records (as opposed to |
41 |
sequential one). |
sequential one). |
42 |
|
|
43 |
=head1 METHODS |
=head1 METHODS |
120 |
print STDERR "REC ",$self->{count},": $leader\n" if ($self->{debug}); |
print STDERR "REC ",$self->{count},": $leader\n" if ($self->{debug}); |
121 |
|
|
122 |
# store leader for later |
# store leader for later |
123 |
push @{$self->{leaders}}, $leader; |
push @{$self->{leader}}, $leader; |
124 |
|
|
125 |
# skip to next record |
# skip to next record |
126 |
my $o = substr($leader,0,5); |
my $o = substr($leader,0,5); |
154 |
|
|
155 |
my $hash = $marc->fetch(42); |
my $hash = $marc->fetch(42); |
156 |
|
|
157 |
|
First record number is C<1> |
158 |
|
|
159 |
=cut |
=cut |
160 |
|
|
161 |
sub fetch { |
sub fetch { |
162 |
my $self = shift; |
my $self = shift; |
163 |
|
|
164 |
my $rec_nr = shift || return; |
my $rec_nr = shift; |
165 |
|
|
166 |
my $leader = $self->{leaders}->[$rec_nr - 1]; |
if ( ! $rec_nr ) { |
167 |
|
$self->{last_leader} = undef; |
168 |
|
return; |
169 |
|
} |
170 |
|
|
171 |
|
my $leader = $self->{leader}->[$rec_nr - 1]; |
172 |
|
$self->{last_leader} = $leader; |
173 |
unless ($leader) { |
unless ($leader) { |
174 |
carp "can't find record $rec_nr"; |
carp "can't find record $rec_nr"; |
175 |
return; |
return; |
251 |
} |
} |
252 |
|
|
253 |
|
|
254 |
|
=head2 last_leader |
255 |
|
|
256 |
|
Returns leader of last record L<fetch>ed |
257 |
|
|
258 |
|
print $marc->last_leader; |
259 |
|
|
260 |
|
Added in version 0.08 of this module, so if you need it use: |
261 |
|
|
262 |
|
use MARC::Fast 0.08; |
263 |
|
|
264 |
|
to be sure that it's supported. |
265 |
|
|
266 |
|
=cut |
267 |
|
|
268 |
|
sub last_leader { |
269 |
|
my $self = shift; |
270 |
|
return $self->{last_leader}; |
271 |
|
} |
272 |
|
|
273 |
|
|
274 |
=head2 to_hash |
=head2 to_hash |
275 |
|
|
276 |
Read record with specified MFN and convert it to hash |
Read record with specified MFN and convert it to hash |
350 |
return $rec; |
return $rec; |
351 |
} |
} |
352 |
|
|
353 |
|
=head2 to_ascii |
354 |
|
|
355 |
1; |
print $marc->to_ascii( 42 ); |
|
__END__ |
|
356 |
|
|
357 |
=head1 BUGS |
=cut |
358 |
|
|
359 |
|
sub to_ascii { |
360 |
|
my $self = shift; |
361 |
|
|
362 |
|
my $mfn = shift || confess "need mfn"; |
363 |
|
my $row = $self->fetch($mfn) || return; |
364 |
|
|
365 |
|
my $out; |
366 |
|
|
367 |
=head1 SUPPORT |
foreach my $f (sort keys %{$row}) { |
368 |
|
my $dump = join('', @{ $row->{$f} }); |
369 |
|
$dump =~ s/\x1e$//; |
370 |
|
$dump =~ s/\x1f/\$/g; |
371 |
|
$out .= "$f\t$dump\n"; |
372 |
|
} |
373 |
|
|
374 |
|
return $out; |
375 |
|
} |
376 |
|
|
377 |
|
1; |
378 |
|
__END__ |
379 |
|
|
380 |
=head1 AUTHOR |
=head1 AUTHOR |
381 |
|
|
395 |
|
|
396 |
=head1 SEE ALSO |
=head1 SEE ALSO |
397 |
|
|
398 |
perl(1). |
L<Biblio::Isis>, perl(1). |
399 |
|
|
400 |
=cut |
=cut |