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use strict; |
use strict; |
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use Carp; |
use Carp; |
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use Data::Dumper; |
use Data::Dump qw/dump/; |
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BEGIN { |
BEGIN { |
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use Exporter (); |
use Exporter (); |
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use vars qw ($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS); |
use vars qw ($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS); |
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$VERSION = 0.09; |
$VERSION = 0.12; |
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@ISA = qw (Exporter); |
@ISA = qw (Exporter); |
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#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 |
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@EXPORT = qw (); |
@EXPORT = qw (); |
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my $len = read($self->{fh}, $leader, 24); |
my $len = read($self->{fh}, $leader, 24); |
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if ($len < 24) { |
if ($len < 24) { |
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carp "short read of leader, aborting\n"; |
warn "short read of leader, aborting\n"; |
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$self->{count}--; |
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last; |
last; |
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} |
} |
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# skip to next record |
# skip to next record |
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my $o = substr($leader,0,5); |
my $o = substr($leader,0,5); |
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warn "# in record ", $self->{count}," record length isn't number but: ",dump($o),"\n" unless $o =~ m/^\d+$/; |
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if ($o > 24) { |
if ($o > 24) { |
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seek($self->{fh},$o-24,1) if ($o); |
seek($self->{fh},$o-24,1) if ($o); |
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} else { |
} else { |
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Read record with specified MFN and convert it to hash |
Read record with specified MFN and convert it to hash |
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my $hash = $marc->to_hash( $mfn, include_subfields => 1, ); |
my $hash = $marc->to_hash( $mfn, include_subfields => 1, |
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hash_filter => sub { my ($l,$tag) = @_; return $l; } |
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); |
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It has ability to convert characters (using C<hash_filter>) from MARC |
It has ability to convert characters (using C<hash_filter>) from MARC |
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database before creating structures enabling character re-mapping or quick |
database before creating structures enabling character re-mapping or quick |
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fix-up of data. |
fix-up of data. If you specified C<hash_filter> both in C<new> and C<to_hash> |
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only the one from C<to_hash> will be used. |
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This function returns hash which is like this: |
This function returns hash which is like this: |
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my $mfn = shift || confess "need mfn!"; |
my $mfn = shift || confess "need mfn!"; |
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my $args = {@_}; |
my $args = {@_}; |
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my $filter_coderef = $args->{'hash_filter'} || $self->{'hash_filter'}; |
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# init record to include MFN as field 000 |
# init record to include MFN as field 000 |
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my $rec = { '000' => [ $mfn ] }; |
my $rec = { '000' => [ $mfn ] }; |
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my $row = $self->fetch($mfn) || return; |
my $row = $self->fetch($mfn) || return; |
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foreach my $rec_nr (keys %{$row}) { |
foreach my $tag (keys %{$row}) { |
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foreach my $l (@{$row->{$rec_nr}}) { |
foreach my $l (@{$row->{$tag}}) { |
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# remove end marker |
# remove end marker |
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$l =~ s/\x1E$//; |
$l =~ s/\x1E$//; |
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# filter output |
# filter output |
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$l = $self->{'hash_filter'}->($l, $rec_nr) if ($self->{'hash_filter'}); |
$l = $filter_coderef->($l, $tag) if $filter_coderef; |
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my $val; |
my $val; |
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foreach my $t (split(/\x1F/,$l)) { |
foreach my $t (split(/\x1F/,$l)) { |
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next if (! $t); |
next if (! $t); |
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my $f = substr($t,0,1); |
my $f = substr($t,0,1); |
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my $v = substr($t,1); |
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push @subfields, ( $f, $sf_usage->{$f}++ || 0 ); |
push @subfields, ( $f, $sf_usage->{$f}++ || 0 ); |
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# repeatable subfiled -- convert it to array |
# repeatable subfiled -- convert it to array |
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if ($val->{$f}) { |
if ( defined $val->{$f} ) { |
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if ( $sf_usage->{$f} == 2 ) { |
if ( ref($val->{$f}) ne 'ARRAY' ) { |
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$val->{$f} = [ $val->{$f}, $val ]; |
$val->{$f} = [ $val->{$f}, $v ]; |
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} else { |
} else { |
349 |
push @{$val->{$f}}, $val; |
push @{$val->{$f}}, $v; |
350 |
} |
} |
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} else { |
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$val->{$f} = $v; |
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} |
} |
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$val->{substr($t,0,1)} = substr($t,1); |
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} |
} |
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$val->{subfields} = [ @subfields ] if $args->{include_subfields}; |
$val->{subfields} = [ @subfields ] if $args->{include_subfields}; |
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} else { |
} else { |
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$val = $l; |
$val = $l; |
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} |
} |
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push @{$rec->{$rec_nr}}, $val; |
push @{$rec->{$tag}}, $val; |
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} |
} |
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} |
} |
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1; |
1; |
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__END__ |
__END__ |
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=head1 UTF-8 ENCODING |
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This module does nothing with encoding. But, since MARC format is byte |
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oriented even when using UTF-8 which has variable number of bytes for each |
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character, file is opened in binary mode. |
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As a result, all scalars recturned to perl don't have utf-8 flag. Solution is |
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to use C<hash_filter> and L<Encode> to decode utf-8 encoding like this: |
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use Encode; |
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my $marc = new MARC::Fast( |
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marcdb => 'utf8.marc', |
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hash_filter => sub { |
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Encode::decode( 'utf-8', $_[0] ); |
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}, |
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); |
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This will affect C<to_hash>, but C<fetch> will still return binary representation |
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since it doesn't support C<hash_filter>. |
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=head1 AUTHOR |
=head1 AUTHOR |
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Dobrica Pavlinusic |
Dobrica Pavlinusic |