--- trunk/Fast.pm 2006/07/13 14:00:23 9 +++ trunk/Fast.pm 2007/10/29 22:33:35 18 @@ -1,5 +1,5 @@ - package MARC::Fast; + use strict; use Carp; use Data::Dumper; @@ -7,7 +7,7 @@ BEGIN { use Exporter (); use vars qw ($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS); - $VERSION = 0.04; + $VERSION = 0.08; @ISA = qw (Exporter); #Give a hoot don't pollute, do not export more than needed by default @EXPORT = qw (); @@ -23,12 +23,21 @@ use MARC::Fast; + my $marc = new MARC::Fast( + marcdb => 'unimarc.iso', + ); + + foreach my $mfn ( 1 .. $marc->count ) { + print $marc->to_ascii( $mfn ); + } + +For longer example with command line options look at L =head1 DESCRIPTION This is very fast alternative to C and C modules. -It's is also very sutable for random access to MARC records (as opposed to +It's is also very subtable for random access to MARC records (as opposed to sequential one). =head1 METHODS @@ -111,7 +120,7 @@ print STDERR "REC ",$self->{count},": $leader\n" if ($self->{debug}); # store leader for later - push @{$self->{leaders}}, $leader; + push @{$self->{leader}}, $leader; # skip to next record my $o = substr($leader,0,5); @@ -145,14 +154,22 @@ my $hash = $marc->fetch(42); +First record number is C<1> + =cut sub fetch { my $self = shift; - my $rec_nr = shift || return; + my $rec_nr = shift; - my $leader = $self->{leaders}->[$rec_nr - 1]; + if ( ! $rec_nr ) { + $self->{last_leader} = undef; + return; + } + + my $leader = $self->{leader}->[$rec_nr - 1]; + $self->{last_leader} = $leader; unless ($leader) { carp "can't find record $rec_nr"; return; @@ -234,6 +251,26 @@ } +=head2 last_leader + +Returns leader of last record Led + + print $marc->last_leader; + +Added in version 0.08 of this module, so if you need it use: + + use MARC::Fast 0.08; + +to be sure that it's supported. + +=cut + +sub last_leader { + my $self = shift; + return $self->{last_leader}; +} + + =head2 to_hash Read record with specified MFN and convert it to hash @@ -313,17 +350,32 @@ return $rec; } +=head2 to_ascii -1; -__END__ + print $marc->to_ascii( 42 ); -=head1 BUGS +=cut + +sub to_ascii { + my $self = shift; + my $mfn = shift || confess "need mfn"; + my $row = $self->fetch($mfn) || return; + my $out; -=head1 SUPPORT + foreach my $f (sort keys %{$row}) { + my $dump = join('', @{ $row->{$f} }); + $dump =~ s/\x1e$//; + $dump =~ s/\x1f/\$/g; + $out .= "$f\t$dump\n"; + } + return $out; +} +1; +__END__ =head1 AUTHOR @@ -343,6 +395,6 @@ =head1 SEE ALSO -perl(1). +L, perl(1). =cut