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use base qw/WebPAC::Common/; |
use base qw/WebPAC::Common/; |
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use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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=head1 NAME |
=head1 NAME |
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=cut |
=cut |
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our $VERSION = '0.03'; |
our $VERSION = '0.04'; |
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our $debug = 0; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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my $arg = {@_}; |
my $arg = {@_}; |
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my $log = $self->_get_logger(); |
open( my $fh, '<', $arg->{path} ) || confess "can't open $arg->{path}: $!"; |
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open( my $fh, '<', $arg->{path} ) || $log->logconfess("can't open $arg->{path}: $!"); |
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my ( $format, $version ); |
my ( $format, $version ); |
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if ( $line =~ /^FN\s(.+)$/) { |
if ( $line =~ /^FN\s(.+)$/) { |
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$format = $1; |
$format = $1; |
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} else { |
} else { |
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$log->logdie("first line of $arg->{path} has to be FN, but is: $line"); |
die "first line of $arg->{path} has to be FN, but is: $line"; |
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} |
} |
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$line = <$fh>; |
$line = <$fh>; |
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if ( $line =~ /^VR\s(.+)$/) { |
if ( $line =~ /^VR\s(.+)$/) { |
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$version = $1; |
$version = $1; |
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} else { |
} else { |
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$log->logdie("second line of $arg->{path} has to be VN, but is: $line"); |
die "second line of $arg->{path} has to be VN, but is: $line"; |
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} |
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warn "I: $arg->{path} $format $version - generating record offsets\n"; |
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$self->{fh} = $fh; |
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$self->{record_offset} = []; |
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while( $line = <$fh> ) { |
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chomp($line); |
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next unless $line eq 'ER'; |
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push @{ $self->{record_offset} }, tell($fh); |
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last if $#{ $self->{record_offset} } > $self->{offset} + $self->{limit}; |
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} |
} |
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push @{ $self->{record_offset} }, tell($fh); # end of file |
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warn "I $arg->{path} read ", tell($fh), " bytes $#{ $self->{record_offset} } records\n"; |
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return $self; |
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} |
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=head2 fetch_rec |
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Return record with ID C<$mfn> from database |
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my $rec = $input->fetch_rec( $mfn, $filter_coderef ); |
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=cut |
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sub fetch_rec { |
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my ( $self, $mfn, $filter_coderef ) = @_; |
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$log->info("opening $format $version database '$arg->{path}'"); |
seek $self->{fh}, $self->{record_offset}->[ $mfn - 1 ], 0; |
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my $tag; |
my $tag; |
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my $rec; |
my $rec; |
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my $offset = $self->{offset} || 0; |
my $fh = $self->{fh}; |
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my $limit = $self->{limit} || 0; |
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my $file_pos = 0; |
while( my $line = <$fh> ) { |
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my $end_pos = 0; |
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$end_pos = $offset + $limit if $limit; |
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$self->{_rec} = []; |
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warn "# offset: $offset limit: $limit end: $end_pos"; |
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while( $line = <$fh> ) { |
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chomp($line); |
chomp($line); |
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my $v; |
my $v; |
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if ( $line eq 'EF' ) { |
if ( $line eq 'EF' ) { |
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last; |
return; |
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} elsif ( $line eq 'ER' ) { |
} elsif ( $line eq 'ER' ) { |
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$file_pos++; |
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last if $end_pos && $file_pos > $end_pos; |
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if ( ! $offset || $file_pos > $offset ) { |
$line = <$fh>; |
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chomp $line; |
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die "expected blank like in ",$self->{path}, " +$.: $line" unless $line eq ''; |
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# join tags |
# join tags |
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foreach ( qw/AB DE ID TI SO RP SC FU FX PA JI/ ) { |
foreach ( qw/AB DE ID TI SO RP SC FU FX PA JI/ ) { |
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$rec->{$_} = join(' ', @{ $rec->{$_} }) if defined $rec->{$_}; |
$rec->{$_} = join(' ', @{ $rec->{$_} }) if defined $rec->{$_}; |
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} |
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# split on ; |
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foreach ( qw/ID SC DE/ ) { |
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$rec->{$_} = [ split(/;\s/, $rec->{$_}) ] if defined $rec->{$_}; |
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} |
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$rec->{'000'} = [ $file_pos ]; |
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push @{ $self->{_rec} }, $rec; |
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} |
} |
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$rec = {}; |
# split on ; |
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$line = <$fh>; |
foreach ( qw/ID SC DE/ ) { |
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chomp $line; |
$rec->{$_} = [ split(/;\s/, $rec->{$_}) ] if defined $rec->{$_}; |
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$log->logdie("expected blank like in ",$arg->{path}, " +$.: $line") unless ( $line eq '' ); |
} |
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} elsif ( $offset && $file_pos < $offset ) { |
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next; |
$rec->{'000'} = [ $mfn ]; |
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warn "## mfn $mfn" if $debug; |
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return $rec; |
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} elsif ( $line =~ /^(\S\S)\s(.+)$/ ) { |
} elsif ( $line =~ /^(\S\S)\s(.+)$/ ) { |
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$tag = $1; |
$tag = $1; |
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$v = $2; |
$v = $2; |
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$v .= $doi; |
$v .= $doi; |
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} |
} |
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} elsif ( $line =~ m{^(\S\S)\s*$} ) { |
} elsif ( $line =~ m{^(\S\S)\s*$} ) { |
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warn "# $arg->{path} +$. empty |$line|\n"; |
warn "# $self->{path} +$. empty |$line|\n"; |
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} else { |
} elsif ( $line ne '' ) { |
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$log->logdie("can't parse +$. $arg->{path} |$line|"); |
warn "E: $self->{path} +$ | can't parse |$line|"; |
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} |
} |
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if ( defined $v ) { |
if ( defined $v ) { |
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$v = $subfields->{$tag}->($v) if defined $subfields->{$tag}; |
$v = $subfields->{$tag}->($v) if defined $subfields->{$tag}; |
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$log->debug("$tag: ", sub { dump( $v ) }); |
warn "## $tag: ", sub { dump( $v ) } if $debug; |
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push @{ $rec->{$tag} }, $v; |
push @{ $rec->{$tag} }, $v; |
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} |
} |
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} |
} |
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$log->debug("loaded ", $self->size, " records"); |
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$self ? return $self : return undef; |
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} |
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=head2 fetch_rec |
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Return record with ID C<$mfn> from database |
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my $rec = $input->fetch_rec( $mfn, $filter_coderef ); |
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=cut |
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sub fetch_rec { |
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my $self = shift; |
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my ( $mfn, $filter_coderef ) = @_; |
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$mfn -= $self->{offset} if $self->{offset}; |
warn "can't get full record $mfn got ", dump $rec; |
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return $self->{_rec}->[$mfn-1]; |
return $rec; |
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} |
} |
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sub size { |
sub size { |
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my $self = shift; |
my $self = shift; |
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$#{ $self->{_rec} } + 1; |
$#{ $self->{record_offset} } - $self->{offset}; |
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# no need for +1 since we record end of file as last record |
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} |
} |
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=head1 SEE ALSO |
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L<http://isibasic.com/help/helpprn.html> is only sane source of document format which Google could find... |
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=head1 AUTHOR |
=head1 AUTHOR |
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Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
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=head1 COPYRIGHT & LICENSE |
=head1 COPYRIGHT & LICENSE |
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Copyright 2007 Dobrica Pavlinusic, All Rights Reserved. |
Copyright 2009 Dobrica Pavlinusic, All Rights Reserved. |
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This program is free software; you can redistribute it and/or modify it |
This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
under the same terms as Perl itself. |