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package WebPAC::Normalize; |
package WebPAC::Normalize; |
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use Exporter 'import'; |
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our @EXPORT = qw/ |
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_set_ds _set_lookup |
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_set_load_row |
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_get_ds _clean_ds |
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_debug |
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_pack_subfields_hash |
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search_display search display sorted |
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rec1 rec2 rec |
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frec frec_eq frec_ne |
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regex prefix suffix surround |
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first lookup join_with |
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save_into_lookup |
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split_rec_on |
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get set |
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count |
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/; |
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use warnings; |
use warnings; |
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use strict; |
use strict; |
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=head1 NAME |
#use base qw/WebPAC::Common/; |
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use Data::Dump qw/dump/; |
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WebPAC::Normalize - normalisation of source file |
use Carp qw/confess/; |
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# debugging warn(s) |
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my $debug = 0; |
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_debug( $debug ); |
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# FIXME |
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use WebPAC::Normalize::ISBN; |
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push @EXPORT, ( 'isbn_10', 'isbn_13' ); |
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use WebPAC::Normalize::MARC; |
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push @EXPORT, ( qw/ |
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marc marc_indicators marc_repeatable_subfield |
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marc_compose marc_leader marc_fixed |
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marc_duplicate marc_remove marc_count |
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marc_original_order |
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marc_template |
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/); |
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=head1 VERSION |
=head1 NAME |
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Version 0.01 |
WebPAC::Normalize - describe normalisaton rules using sets |
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=cut |
=cut |
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our $VERSION = '0.01'; |
our $VERSION = '0.35'; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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This package contains code that could be helpful in implementing different |
This module uses C<conf/normalize/*.pl> files to perform normalisation |
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normalisation front-ends. |
from input records using perl functions which are specialized for set |
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processing. |
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Sets are implemented as arrays, and normalisation file is valid perl, which |
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means that you check it's validity before running WebPAC using |
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C<perl -c normalize.pl>. |
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Normalisation can generate multiple output normalized data. For now, supported output |
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types (on the left side of definition) are: C<search_display>, C<display>, C<search> and |
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C<marc>. |
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=head1 FUNCTIONS |
=head1 FUNCTIONS |
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=head2 none_yet |
Functions which start with C<_> are private and used by WebPAC internally. |
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All other functions are available for use within normalisation rules. |
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=head2 data_structure |
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Return data structure |
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my $ds = WebPAC::Normalize::data_structure( |
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lookup => $lookup_hash, |
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row => $row, |
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rules => $normalize_pl_config, |
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marc_encoding => 'utf-8', |
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config => $config, |
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load_row_coderef => sub { |
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my ($database,$input,$mfn) = @_; |
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$store->load_row( database => $database, input => $input, id => $mfn ); |
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}, |
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); |
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Options C<row>, C<rules> and C<log> are mandatory while all |
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other are optional. |
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C<load_row_coderef> is closure only used when executing lookups, so they will |
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die if it's not defined. |
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This function will B<die> if normalizastion can't be evaled. |
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Since this function isn't exported you have to call it with |
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C<WebPAC::Normalize::data_structure>. |
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=cut |
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my $load_row_coderef; |
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sub data_structure { |
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my $arg = {@_}; |
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die "need row argument" unless ($arg->{row}); |
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die "need normalisation argument" unless ($arg->{rules}); |
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_set_lookup( $arg->{lookup} ) if defined($arg->{lookup}); |
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_set_ds( $arg->{row} ); |
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_set_config( $arg->{config} ) if defined($arg->{config}); |
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_clean_ds( %{ $arg } ); |
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$load_row_coderef = $arg->{load_row_coderef}; |
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no strict 'subs'; |
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no warnings 'redefine'; |
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eval "$arg->{rules};"; |
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die "error evaling $arg->{rules}: $@\n" if ($@); |
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return _get_ds(); |
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} |
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=head2 _set_ds |
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Set current record hash |
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_set_ds( $rec ); |
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=cut |
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my $rec; |
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sub _set_ds { |
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$rec = shift or die "no record hash"; |
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$WebPAC::Normalize::MARC::rec = $rec; |
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} |
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=head2 |
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my $rec = _get_rec(); |
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=cut |
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sub _get_rec { $rec }; |
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=head2 _set_config |
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Set current config hash |
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_set_config( $config ); |
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Magic keys are: |
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=over 4 |
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=item _ |
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Code of current database |
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=item _mfn |
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Current MFN |
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=back |
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=cut |
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my $config; |
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sub _set_config { |
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$config = shift; |
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} |
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=head2 _get_ds |
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Return hash formatted as data structure |
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my $ds = _get_ds(); |
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=cut |
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my $out; |
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sub _get_ds { |
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#warn "## out = ",dump($out); |
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return $out; |
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} |
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=head2 _clean_ds |
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Clean data structure hash for next record |
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_clean_ds(); |
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=cut |
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sub _clean_ds { |
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my $a = {@_}; |
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$out = undef; |
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WebPAC::Normalize::MARC::_clean(); |
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} |
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=head2 _set_lookup |
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Set current lookup hash |
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_set_lookup( $lookup ); |
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=cut |
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my $lookup; |
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sub _set_lookup { |
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$lookup = shift; |
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} |
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=head2 _get_lookup |
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Get current lookup hash |
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my $lookup = _get_lookup(); |
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=cut |
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sub _get_lookup { |
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return $lookup; |
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} |
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=head2 _set_load_row |
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Setup code reference which will return L<data_structure> from |
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L<WebPAC::Store> |
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_set_load_row(sub { |
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my ($database,$input,$mfn) = @_; |
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$store->load_row( database => $database, input => $input, id => $mfn ); |
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}); |
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=cut |
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sub _set_load_row { |
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my $coderef = shift; |
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confess "argument isn't CODE" unless ref($coderef) eq 'CODE'; |
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$load_row_coderef = $coderef; |
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} |
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=head2 _debug |
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Change level of debug warnings |
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_debug( 2 ); |
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=cut |
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sub _debug { |
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my $l = shift; |
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return $debug unless defined($l); |
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warn "debug level $l",$/ if ($l > 0); |
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$debug = $l; |
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$WebPAC::Normalize::MARC::debug = $debug; |
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warn "#### MARC::debug = ",dump($WebPAC::Normalize::MARC::debug); |
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} |
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=head1 Functions to create C<data_structure> |
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Those functions generally have to first in your normalization file. |
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=head2 search_display |
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Define output for L<search> and L<display> at the same time |
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search_display('Title', rec('200','a') ); |
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=cut |
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sub search_display { |
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my $name = shift or die "search_display needs name as first argument"; |
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my @o = grep { defined($_) && $_ ne '' } @_; |
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return unless (@o); |
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$out->{$name}->{search} = \@o; |
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$out->{$name}->{display} = \@o; |
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} |
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=head2 tag |
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Old name for L<search_display>, but supported |
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=cut |
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sub tag { |
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search_display( @_ ); |
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} |
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=head2 display |
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Define output just for I<display> |
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@v = display('Title', rec('200','a') ); |
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=cut |
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sub _field { |
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my $type = shift or confess "need type -- BUG?"; |
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my $name = shift or confess "needs name as first argument"; |
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my @o = grep { defined($_) && $_ ne '' } @_; |
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return unless (@o); |
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$out->{$name}->{$type} = \@o; |
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} |
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sub display { _field( 'display', @_ ) } |
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=head2 search |
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Prepare values just for I<search> |
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@v = search('Title', rec('200','a') ); |
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=cut |
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sub search { _field( 'search', @_ ) } |
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=head2 sorted |
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Insert into lists which will be automatically sorted |
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sorted('Title', rec('200','a') ); |
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=cut |
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sub sorted { _field( 'sorted', @_ ) } |
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=head1 Functions to extract data from input |
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This function should be used inside functions to create C<data_structure> described |
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above. |
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=head2 _pack_subfields_hash |
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@subfields = _pack_subfields_hash( $h ); |
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$subfields = _pack_subfields_hash( $h, 1 ); |
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Return each subfield value in array or pack them all together and return scalar |
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with subfields (denoted by C<^>) and values. |
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=cut |
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sub _pack_subfields_hash { |
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warn "## _pack_subfields_hash( ",dump(@_), " )\n" if ($debug > 1); |
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my ($h,$include_subfields) = @_; |
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# sanity and ease of use |
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return $h if (ref($h) ne 'HASH'); |
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if ( defined($h->{subfields}) ) { |
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my $sfs = delete $h->{subfields} || die "no subfields?"; |
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my @out; |
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while (@$sfs) { |
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my $sf = shift @$sfs; |
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push @out, '^' . $sf if ($include_subfields); |
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my $o = shift @$sfs; |
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if ($o == 0 && ref( $h->{$sf} ) ne 'ARRAY' ) { |
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# single element subfields are not arrays |
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#warn "====> $sf $o / $#$sfs ", dump( $sfs, $h->{$sf} ), "\n"; |
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push @out, $h->{$sf}; |
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} else { |
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#warn "====> $sf $o / $#$sfs ", dump( $sfs, $h->{$sf} ), "\n"; |
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push @out, $h->{$sf}->[$o]; |
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} |
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} |
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if ($include_subfields) { |
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return join('', @out); |
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} else { |
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return @out; |
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} |
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} else { |
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if ($include_subfields) { |
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my $out = ''; |
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foreach my $sf (sort keys %$h) { |
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if (ref($h->{$sf}) eq 'ARRAY') { |
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$out .= '^' . $sf . join('^' . $sf, @{ $h->{$sf} }); |
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} else { |
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$out .= '^' . $sf . $h->{$sf}; |
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} |
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} |
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return $out; |
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} else { |
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# FIXME this should probably be in alphabetical order instead of hash order |
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values %{$h}; |
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} |
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} |
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} |
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=head2 rec1 |
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Return all values in some field |
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@v = rec1('200') |
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TODO: order of values is probably same as in source data, need to investigate that |
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=cut |
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sub rec1 { |
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my $f = shift; |
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warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
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return unless (defined($rec) && defined($rec->{$f})); |
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warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
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if (ref($rec->{$f}) eq 'ARRAY') { |
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my @out; |
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foreach my $h ( @{ $rec->{$f} } ) { |
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if (ref($h) eq 'HASH') { |
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push @out, ( _pack_subfields_hash( $h ) ); |
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} else { |
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push @out, $h; |
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} |
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} |
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return @out; |
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} elsif( defined($rec->{$f}) ) { |
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return $rec->{$f}; |
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} |
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} |
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=head2 rec2 |
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Return all values in specific field and subfield |
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@v = rec2('200','a') |
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=cut |
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sub rec2 { |
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my $f = shift; |
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return unless (defined($rec && $rec->{$f})); |
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my $sf = shift; |
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warn "rec2($f,$sf) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
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return map { |
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if (ref($_->{$sf}) eq 'ARRAY') { |
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@{ $_->{$sf} }; |
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} else { |
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$_->{$sf}; |
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} |
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} grep { ref($_) eq 'HASH' && $_->{$sf} } @{ $rec->{$f} }; |
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} |
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=head2 rec |
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syntaxtic sugar for |
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@v = rec('200') |
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@v = rec('200','a') |
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If rec() returns just single value, it will |
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return scalar, not array. |
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=cut |
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sub rec { |
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my @out; |
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if ($#_ == 0) { |
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@out = rec1(@_); |
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} elsif ($#_ == 1) { |
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@out = rec2(@_); |
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} |
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if ($#out == 0 && ! wantarray) { |
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return $out[0]; |
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} elsif (@out) { |
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return @out; |
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} else { |
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return ''; |
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} |
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} |
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=head2 frec |
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Returns first value from field |
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$v = frec('200'); |
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$v = frec('200','a'); |
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=cut |
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sub frec { |
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my @out = rec(@_); |
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warn "rec(",dump(@_),") has more than one return value, ignoring\n" if $#out > 0; |
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return shift @out; |
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} |
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=head2 frec_eq |
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=head2 frec_ne |
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|
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Check if first values from two fields are same or different |
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if ( frec_eq( 900 => 'a', 910 => 'c' ) ) { |
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# values are same |
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} else { |
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# values are different |
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} |
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|
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Strictly speaking C<frec_eq> and C<frec_ne> wouldn't be needed if you |
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could write something like: |
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if ( frec( '900','a' ) eq frec( '910','c' ) ) { |
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# yada tada |
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} |
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|
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but you can't since our parser L<WebPAC::Parser> will remove all whitespaces |
519 |
|
in order to parse text and create invalid function C<eqfrec>. |
520 |
|
|
521 |
|
=cut |
522 |
|
|
523 |
|
sub frec_eq { |
524 |
|
my ( $f1,$sf1, $f2, $sf2 ) = @_; |
525 |
|
return (rec( $f1, $sf1 ))[0] eq (rec( $f2, $sf2 ))[0]; |
526 |
|
} |
527 |
|
|
528 |
|
sub frec_ne { |
529 |
|
return ! frec_eq( @_ ); |
530 |
|
} |
531 |
|
|
532 |
|
=head2 regex |
533 |
|
|
534 |
|
Apply regex to some or all values |
535 |
|
|
536 |
|
@v = regex( 's/foo/bar/g', @v ); |
537 |
|
|
538 |
|
=cut |
539 |
|
|
540 |
|
sub regex { |
541 |
|
my $r = shift; |
542 |
|
my @out; |
543 |
|
#warn "r: $r\n", dump(\@_); |
544 |
|
foreach my $t (@_) { |
545 |
|
next unless ($t); |
546 |
|
eval "\$t =~ $r"; |
547 |
|
push @out, $t if ($t && $t ne ''); |
548 |
|
} |
549 |
|
return @out; |
550 |
|
} |
551 |
|
|
552 |
|
=head2 prefix |
553 |
|
|
554 |
|
Prefix all values with a string |
555 |
|
|
556 |
|
@v = prefix( 'my_', @v ); |
557 |
|
|
558 |
|
=cut |
559 |
|
|
560 |
|
sub prefix { |
561 |
|
my $p = shift; |
562 |
|
return @_ unless defined( $p ); |
563 |
|
return map { $p . $_ } grep { defined($_) } @_; |
564 |
|
} |
565 |
|
|
566 |
|
=head2 suffix |
567 |
|
|
568 |
|
suffix all values with a string |
569 |
|
|
570 |
|
@v = suffix( '_my', @v ); |
571 |
|
|
572 |
|
=cut |
573 |
|
|
574 |
|
sub suffix { |
575 |
|
my $s = shift; |
576 |
|
return @_ unless defined( $s ); |
577 |
|
return map { $_ . $s } grep { defined($_) } @_; |
578 |
|
} |
579 |
|
|
580 |
|
=head2 surround |
581 |
|
|
582 |
|
surround all values with a two strings |
583 |
|
|
584 |
|
@v = surround( 'prefix_', '_suffix', @v ); |
585 |
|
|
586 |
|
=cut |
587 |
|
|
588 |
|
sub surround { |
589 |
|
my $p = shift; |
590 |
|
my $s = shift; |
591 |
|
$p = '' unless defined( $p ); |
592 |
|
$s = '' unless defined( $s ); |
593 |
|
return map { $p . $_ . $s } grep { defined($_) } @_; |
594 |
|
} |
595 |
|
|
596 |
|
=head2 first |
597 |
|
|
598 |
|
Return first element |
599 |
|
|
600 |
|
$v = first( @v ); |
601 |
|
|
602 |
|
=cut |
603 |
|
|
604 |
|
sub first { |
605 |
|
my $r = shift; |
606 |
|
return $r; |
607 |
|
} |
608 |
|
|
609 |
|
=head2 lookup |
610 |
|
|
611 |
|
Consult lookup hashes for some value |
612 |
|
|
613 |
|
@v = lookup( |
614 |
|
sub { |
615 |
|
'ffkk/peri/mfn'.rec('000') |
616 |
|
}, |
617 |
|
'ffkk','peri','200-a-200-e', |
618 |
|
sub { |
619 |
|
first(rec(200,'a')).' '.first(rec('200','e')) |
620 |
|
} |
621 |
|
); |
622 |
|
|
623 |
|
Code like above will be B<automatically generated> using L<WebPAC::Parse> from |
624 |
|
normal lookup definition in C<conf/lookup/something.pl> which looks like: |
625 |
|
|
626 |
|
lookup( |
627 |
|
# which results to return from record recorded in lookup |
628 |
|
sub { 'ffkk/peri/mfn' . rec('000') }, |
629 |
|
# from which database and input |
630 |
|
'ffkk','peri', |
631 |
|
# such that following values match |
632 |
|
sub { first(rec(200,'a')) . ' ' . first(rec('200','e')) }, |
633 |
|
# if this part is missing, we will try to match same fields |
634 |
|
# from lookup record and current one, or you can override |
635 |
|
# which records to use from current record using |
636 |
|
sub { rec('900','x') . ' ' . rec('900','y') }, |
637 |
|
) |
638 |
|
|
639 |
|
You can think about this lookup as SQL (if that helps): |
640 |
|
|
641 |
|
select |
642 |
|
sub { what } |
643 |
|
from |
644 |
|
database, input |
645 |
|
where |
646 |
|
sub { filter from lookuped record } |
647 |
|
having |
648 |
|
sub { optional filter on current record } |
649 |
|
|
650 |
|
Easy as pie, right? |
651 |
|
|
652 |
|
=cut |
653 |
|
|
654 |
|
sub lookup { |
655 |
|
my ($what, $database, $input, $key, $having) = @_; |
656 |
|
|
657 |
|
confess "lookup needs 5 arguments: what, database, input, key, having\n" unless ($#_ == 4); |
658 |
|
|
659 |
|
warn "## lookup ($database, $input, $key)", $/ if ($debug > 1); |
660 |
|
return unless (defined($lookup->{$database}->{$input}->{$key})); |
661 |
|
|
662 |
|
confess "lookup really need load_row_coderef added to data_structure\n" unless ($load_row_coderef); |
663 |
|
|
664 |
|
my $mfns; |
665 |
|
my @having = $having->(); |
666 |
|
|
667 |
|
warn "## having = ", dump( @having ) if ($debug > 2); |
668 |
|
|
669 |
|
foreach my $h ( @having ) { |
670 |
|
if (defined($lookup->{$database}->{$input}->{$key}->{$h})) { |
671 |
|
warn "lookup for $database/$input/$key/$h return ",dump($lookup->{$database}->{$input}->{$key}->{$h}),"\n" if ($debug); |
672 |
|
$mfns->{$_}++ foreach keys %{ $lookup->{$database}->{$input}->{$key}->{$h} }; |
673 |
|
} |
674 |
|
} |
675 |
|
|
676 |
|
return unless ($mfns); |
677 |
|
|
678 |
|
my @mfns = sort keys %$mfns; |
679 |
|
|
680 |
|
warn "# lookup loading $database/$input/$key mfn ", join(",",@mfns)," having ",dump(@having),"\n" if ($debug); |
681 |
|
|
682 |
|
my $old_rec = $rec; |
683 |
|
my @out; |
684 |
|
|
685 |
|
foreach my $mfn (@mfns) { |
686 |
|
$rec = $load_row_coderef->( $database, $input, $mfn ); |
687 |
|
|
688 |
|
warn "got $database/$input/$mfn = ", dump($rec), $/ if ($debug); |
689 |
|
|
690 |
|
my @vals = $what->(); |
691 |
|
|
692 |
|
push @out, ( @vals ); |
693 |
|
|
694 |
|
warn "lookup for mfn $mfn returned ", dump(@vals), $/ if ($debug); |
695 |
|
} |
696 |
|
|
697 |
|
# if (ref($lookup->{$k}) eq 'ARRAY') { |
698 |
|
# return @{ $lookup->{$k} }; |
699 |
|
# } else { |
700 |
|
# return $lookup->{$k}; |
701 |
|
# } |
702 |
|
|
703 |
|
$rec = $old_rec; |
704 |
|
|
705 |
|
warn "## lookup returns = ", dump(@out), $/ if ($debug); |
706 |
|
|
707 |
|
if ($#out == 0) { |
708 |
|
return $out[0]; |
709 |
|
} else { |
710 |
|
return @out; |
711 |
|
} |
712 |
|
} |
713 |
|
|
714 |
|
=head2 save_into_lookup |
715 |
|
|
716 |
|
Save value into lookup. It associates current database, input |
717 |
|
and specific keys with one or more values which will be |
718 |
|
associated over MFN. |
719 |
|
|
720 |
|
MFN will be extracted from first occurence current of field 000 |
721 |
|
in current record, or if it doesn't exist from L<_set_config> C<_mfn>. |
722 |
|
|
723 |
|
my $nr = save_into_lookup($database,$input,$key,sub { |
724 |
|
# code which produce one or more values |
725 |
|
}); |
726 |
|
|
727 |
|
It returns number of items saved. |
728 |
|
|
729 |
|
This function shouldn't be called directly, it's called from code created by |
730 |
|
L<WebPAC::Parser>. |
731 |
|
|
732 |
|
=cut |
733 |
|
|
734 |
|
sub save_into_lookup { |
735 |
|
my ($database,$input,$key,$coderef) = @_; |
736 |
|
die "save_into_lookup needs database" unless defined($database); |
737 |
|
die "save_into_lookup needs input" unless defined($input); |
738 |
|
die "save_into_lookup needs key" unless defined($key); |
739 |
|
die "save_into_lookup needs CODE" unless ( defined($coderef) && ref($coderef) eq 'CODE' ); |
740 |
|
|
741 |
|
warn "## save_into_lookup rec = ", dump($rec), " config = ", dump($config), $/ if ($debug > 2); |
742 |
|
|
743 |
|
my $mfn = |
744 |
|
defined($rec->{'000'}->[0]) ? $rec->{'000'}->[0] : |
745 |
|
defined($config->{_mfn}) ? $config->{_mfn} : |
746 |
|
die "mfn not defined or zero"; |
747 |
|
|
748 |
|
my $nr = 0; |
749 |
|
|
750 |
|
foreach my $v ( $coderef->() ) { |
751 |
|
$lookup->{$database}->{$input}->{$key}->{$v}->{$mfn}++; |
752 |
|
warn "# saved lookup $database/$input/$key [$v] $mfn\n" if ($debug > 1); |
753 |
|
$nr++; |
754 |
|
} |
755 |
|
|
756 |
|
return $nr; |
757 |
|
} |
758 |
|
|
759 |
|
=head2 config |
760 |
|
|
761 |
|
Consult config values stored in C<config.yml> |
762 |
|
|
763 |
|
# return database code (key under databases in yaml) |
764 |
|
$database_code = config(); # use _ from hash |
765 |
|
$database_name = config('name'); |
766 |
|
$database_input_name = config('input name'); |
767 |
|
|
768 |
|
Up to three levels are supported. |
769 |
|
|
770 |
|
=cut |
771 |
|
|
772 |
|
sub config { |
773 |
|
return unless ($config); |
774 |
|
|
775 |
|
my $p = shift; |
776 |
|
|
777 |
|
$p ||= ''; |
778 |
|
|
779 |
|
my $v; |
780 |
|
|
781 |
|
warn "### getting config($p)\n" if ($debug > 1); |
782 |
|
|
783 |
|
my @p = split(/\s+/,$p); |
784 |
|
if ($#p < 0) { |
785 |
|
$v = $config->{ '_' }; # special, database code |
786 |
|
} else { |
787 |
|
|
788 |
|
my $c = dclone( $config ); |
789 |
|
|
790 |
|
foreach my $k (@p) { |
791 |
|
warn "### k: $k c = ",dump($c),$/ if ($debug > 1); |
792 |
|
if (ref($c) eq 'ARRAY') { |
793 |
|
$c = shift @$c; |
794 |
|
warn "config($p) taking first occurence of '$k', probably not what you wanted!\n"; |
795 |
|
last; |
796 |
|
} |
797 |
|
|
798 |
|
if (! defined($c->{$k}) ) { |
799 |
|
$c = undef; |
800 |
|
last; |
801 |
|
} else { |
802 |
|
$c = $c->{$k}; |
803 |
|
} |
804 |
|
} |
805 |
|
$v = $c if ($c); |
806 |
|
|
807 |
|
} |
808 |
|
|
809 |
|
warn "## config( '$p' ) = ",dump( $v ),$/ if ($v && $debug); |
810 |
|
warn "config( '$p' ) is empty\n" if (! $v); |
811 |
|
|
812 |
|
return $v; |
813 |
|
} |
814 |
|
|
815 |
|
=head2 id |
816 |
|
|
817 |
|
Returns unique id of this record |
818 |
|
|
819 |
|
$id = id(); |
820 |
|
|
821 |
|
Returns C<42/2> for 2nd occurence of MFN 42. |
822 |
|
|
823 |
=cut |
=cut |
824 |
|
|
825 |
sub none_yet { |
sub id { |
826 |
|
my $mfn = $config->{_mfn} || die "no _mfn in config data"; |
827 |
|
return $mfn . ( WebPAC::Normalize::MARC::_created_marc_records() || '' ); |
828 |
} |
} |
829 |
|
|
830 |
=head1 AUTHOR |
=head2 join_with |
831 |
|
|
832 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
Joins walues with some delimiter |
833 |
|
|
834 |
=head1 COPYRIGHT & LICENSE |
$v = join_with(", ", @v); |
835 |
|
|
836 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
=cut |
837 |
|
|
838 |
|
sub join_with { |
839 |
|
my $d = shift; |
840 |
|
warn "### join_with('$d',",dump(@_),")\n" if ($debug > 2); |
841 |
|
my $v = join($d, grep { defined($_) && $_ ne '' } @_); |
842 |
|
return '' unless defined($v); |
843 |
|
return $v; |
844 |
|
} |
845 |
|
|
846 |
|
=head2 split_rec_on |
847 |
|
|
848 |
|
Split record subfield on some regex and take one of parts out |
849 |
|
|
850 |
This program is free software; you can redistribute it and/or modify it |
$a_before_semi_column = |
851 |
under the same terms as Perl itself. |
split_rec_on('200','a', /\s*;\s*/, $part); |
852 |
|
|
853 |
|
C<$part> is optional number of element. First element is |
854 |
|
B<1>, not 0! |
855 |
|
|
856 |
|
If there is no C<$part> parameter or C<$part> is 0, this function will |
857 |
|
return all values produced by splitting. |
858 |
|
|
859 |
=cut |
=cut |
860 |
|
|
861 |
1; # End of WebPAC::DB |
sub split_rec_on { |
862 |
|
die "split_rec_on need (fld,sf,regex[,part]" if ($#_ < 2); |
863 |
|
|
864 |
|
my ($fld, $sf, $regex, $part) = @_; |
865 |
|
warn "### regex ", ref($regex), $regex, $/ if ($debug > 2); |
866 |
|
|
867 |
|
my @r = rec( $fld, $sf ); |
868 |
|
my $v = shift @r; |
869 |
|
warn "### first rec($fld,$sf) = ",dump($v),$/ if ($debug > 2); |
870 |
|
|
871 |
|
return '' if ( ! defined($v) || $v =~ /^\s*$/); |
872 |
|
|
873 |
|
my @s = split( $regex, $v ); |
874 |
|
warn "## split_rec_on($fld,$sf,$regex,$part) = ",dump(@s),$/ if ($debug > 1); |
875 |
|
if ($part && $part > 0) { |
876 |
|
return $s[ $part - 1 ]; |
877 |
|
} else { |
878 |
|
return @s; |
879 |
|
} |
880 |
|
} |
881 |
|
|
882 |
|
my $hash; |
883 |
|
|
884 |
|
=head2 set |
885 |
|
|
886 |
|
set( key => 'value' ); |
887 |
|
|
888 |
|
=cut |
889 |
|
|
890 |
|
sub set { |
891 |
|
my ($k,$v) = @_; |
892 |
|
warn "## set ( $k => ", dump($v), " )", $/ if ( $debug ); |
893 |
|
$hash->{$k} = $v; |
894 |
|
}; |
895 |
|
|
896 |
|
=head2 get |
897 |
|
|
898 |
|
get( 'key' ); |
899 |
|
|
900 |
|
=cut |
901 |
|
|
902 |
|
sub get { |
903 |
|
my $k = shift || return; |
904 |
|
my $v = $hash->{$k}; |
905 |
|
warn "## get $k = ", dump( $v ), $/ if ( $debug ); |
906 |
|
return $v; |
907 |
|
} |
908 |
|
|
909 |
|
=head2 count |
910 |
|
|
911 |
|
if ( count( @result ) == 1 ) { |
912 |
|
# do something if only 1 result is there |
913 |
|
} |
914 |
|
|
915 |
|
=cut |
916 |
|
|
917 |
|
sub count { |
918 |
|
warn "## count ",dump(@_),$/ if ( $debug ); |
919 |
|
return @_ . ''; |
920 |
|
} |
921 |
|
|
922 |
|
# END |
923 |
|
1; |