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package WebPAC::Normalize; |
package WebPAC::Normalize; |
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use Exporter 'import'; |
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@EXPORT = qw/ |
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_set_rec _set_lookup |
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_get_ds _clean_ds |
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_debug |
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tag search display |
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marc marc_indicators marc_repeatable_subfield |
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marc_compose marc_leader |
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marc_duplicate marc_remove |
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rec1 rec2 rec |
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regex prefix suffix surround |
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first lookup join_with |
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split_rec_on |
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/; |
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use warnings; |
use warnings; |
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use strict; |
use strict; |
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use blib; |
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use WebPAC::Common; |
#use base qw/WebPAC::Common/; |
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use base 'WebPAC::Common'; |
use Data::Dump qw/dump/; |
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use Data::Dumper; |
use Encode qw/from_to/; |
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use Storable qw/dclone/; |
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# debugging warn(s) |
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my $debug = 0; |
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=head1 NAME |
=head1 NAME |
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WebPAC::Normalize - data mungling for normalisation |
WebPAC::Normalize - describe normalisaton rules using sets |
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=head1 VERSION |
=head1 VERSION |
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Version 0.08 |
Version 0.10 |
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=cut |
=cut |
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our $VERSION = '0.08'; |
our $VERSION = '0.10'; |
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=head1 SYNOPSIS |
=head1 SYNOPSIS |
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This package contains code that mungle data to produce normalized format. |
This module uses C<conf/normalize/*.pl> files to perform normalisation |
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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<tag>, C<display>, C<search> and |
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C<marc>. |
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It contains several assumptions: |
=head1 FUNCTIONS |
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=over |
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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=item * |
=head2 data_structure |
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format of fields is defined using C<v123^a> notation for repeatable fields |
Return data structure |
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or C<s123^a> for single (or first) value, where C<123> is field number and |
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C<a> is subfield. |
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=item * |
my $ds = WebPAC::Normalize::data_structure( |
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lookup => $lookup->lookup_hash, |
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row => $row, |
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rules => $normalize_pl_config, |
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marc_encoding => 'utf-8', |
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); |
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source data records (C<$rec>) have unique identifiers in field C<000> |
Options C<lookup>, C<row>, C<rules> and C<log> are mandatory while all |
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other are optional. |
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=item * |
This function will B<die> if normalizastion can't be evaled. |
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optional C<eval{length('v123^a') == 3}> tag at B<beginning of format> will be |
Since this function isn't exported you have to call it with |
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perl code that is evaluated before producing output (value of field will be |
C<WebPAC::Normalize::data_structure>. |
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interpolated before that) |
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=item * |
=cut |
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optional C<filter{filter_name}> at B<begining of format> will apply perl |
sub data_structure { |
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code defined as code ref on format after field substitution to producing |
my $arg = {@_}; |
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output |
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There is one built-in filter called C<regex> which can be use like this: |
die "need row argument" unless ($arg->{row}); |
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die "need normalisation argument" unless ($arg->{rules}); |
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filter{regex(s/foo/bar/)} |
no strict 'subs'; |
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_set_lookup( $arg->{lookup} ); |
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_set_rec( $arg->{row} ); |
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_clean_ds( %{ $arg } ); |
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eval "$arg->{rules}"; |
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die "error evaling $arg->{rules}: $@\n" if ($@); |
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=item * |
return _get_ds(); |
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} |
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optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
=head2 _set_rec |
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=item * |
Set current record hash |
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at end, optional C<format>s rules are resolved. Format rules are similar to |
_set_rec( $rec ); |
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C<sprintf> and can also contain C<lookup{...}> which is performed after |
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values are inserted in format. |
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=back |
=cut |
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This also describes order in which transformations are applied (eval, |
my $rec; |
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filter, lookup, format) which is important to undestand when deciding how to |
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solve your data mungling and normalisation process. |
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sub _set_rec { |
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$rec = shift or die "no record hash"; |
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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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=head1 FUNCTIONS |
my $ds = _get_ds(); |
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=head2 new |
=cut |
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Create new normalisation object |
my ($out, $marc_record, $marc_encoding, $marc_repeatable_subfield, $marc_indicators); |
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my ($marc_record_offset, $marc_fetch_offset) = (0, 0); |
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my $n = new WebPAC::Normalize::Something( |
sub _get_ds { |
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filter => { |
return $out; |
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'filter_name_1' => sub { |
} |
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# filter code |
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return length($_); |
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}, ... |
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}, |
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db => $db_obj, |
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lookup_regex => $lookup->regex, |
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lookup => $lookup_obj, |
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prefix => 'foobar', |
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); |
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Parametar C<filter> defines user supplied snippets of perl code which can |
=head2 _clean_ds |
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be use with C<filter{...}> notation. |
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C<prefix> is used to form filename for database record (to support multiple |
Clean data structure hash for next record |
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source files which are joined in one database). |
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Recommended parametar C<lookup_regex> is used to enable parsing of lookups |
_clean_ds(); |
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in structures. If you pass this parametar, you must also pass C<lookup> |
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which is C<WebPAC::Lookup> object. |
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=cut |
=cut |
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sub new { |
sub _clean_ds { |
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my $class = shift; |
my $a = {@_}; |
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my $self = {@_}; |
($out,$marc_record, $marc_encoding, $marc_repeatable_subfield, $marc_indicators) = (); |
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bless($self, $class); |
($marc_record_offset, $marc_fetch_offset) = (0,0); |
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$marc_encoding = $a->{marc_encoding}; |
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my $r = $self->{'lookup_regex'} ? 1 : 0; |
} |
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my $l = $self->{'lookup'} ? 1 : 0; |
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my $log = $self->_get_logger(); |
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# those two must be in pair |
=head2 _set_lookup |
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if ( ($r & $l) != ($r || $l) ) { |
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my $log = $self->_get_logger(); |
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$log->logdie("lookup_regex and lookup must be in pair"); |
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} |
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$log->logdie("lookup must be WebPAC::Lookup object") if ($self->{'lookup'} && ! $self->{'lookup'}->isa('WebPAC::Lookup')); |
Set current lookup hash |
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$log->warn("no prefix defined. please check that!") unless ($self->{'prefix'}); |
_set_lookup( $lookup ); |
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$log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l); |
=cut |
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if (! $self->{filter} || ! $self->{filter}->{regex}) { |
my $lookup; |
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$log->debug("adding built-in filter regex"); |
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$self->{filter}->{regex} = sub { |
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my ($val, $regex) = @_; |
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eval "\$val =~ $regex"; |
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return $val; |
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}; |
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} |
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$self ? return $self : return undef; |
sub _set_lookup { |
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$lookup = shift; |
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} |
} |
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=head2 _get_marc_fields |
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=head2 data_structure |
Get all fields defined by calls to C<marc> |
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Create in-memory data structure which represents normalized layout from |
$marc->add_fields( WebPAC::Normalize:_get_marc_fields() ); |
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C<conf/normalize/*.xml>. |
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This structures are used to produce output. |
We are using I<magic> which detect repeatable fields only from |
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sequence of field/subfield data generated by normalization. |
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my $ds = $webpac->data_structure($rec); |
Repeatable field is created when there is second occurence of same subfield or |
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if any of indicators are different. |
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=cut |
This is sane for most cases. Something like: |
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sub data_structure { |
900a-1 900b-1 900c-1 |
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my $self = shift; |
900a-2 900b-2 |
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900a-3 |
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my $log = $self->_get_logger(); |
will be created from any combination of: |
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my $rec = shift; |
900a-1 900a-2 900a-3 900b-1 900b-2 900c-1 |
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$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
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$log->debug("data_structure rec = ", sub { Dumper($rec) }); |
and following rules: |
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$log->logdie("need unique ID (mfn) in field 000 of record " . Dumper($rec) ) unless (defined($rec->{'000'})); |
marc('900','a', rec('200','a') ); |
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marc('900','b', rec('200','b') ); |
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marc('900','c', rec('200','c') ); |
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my $id = $rec->{'000'}->[0] || $log->logdie("field 000 isn't array!"); |
which might not be what you have in mind. If you need repeatable subfield, |
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define it using C<marc_repeatable_subfield> like this: |
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my $cache_file; |
marc_repeatable_subfield('900','a'); |
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marc('900','a', rec('200','a') ); |
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marc('900','b', rec('200','b') ); |
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marc('900','c', rec('200','c') ); |
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if ($self->{'db'}) { |
will create: |
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my $ds = $self->{'db'}->load_ds( id => $id, prefix => $self->{prefix} ); |
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$log->debug("load_ds( rec = ", sub { Dumper($rec) }, ") = ", sub { Dumper($ds) }); |
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return $ds if ($ds); |
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$log->debug("cache miss, creating"); |
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} |
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my @sorted_tags; |
900a-1 900a-2 900a-3 900b-1 900c-1 |
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if ($self->{tags_by_order}) { |
900b-2 |
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@sorted_tags = @{$self->{tags_by_order}}; |
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} else { |
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@sorted_tags = sort { $self->_sort_by_order } keys %{$self->{'import_xml'}->{'indexer'}}; |
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$self->{tags_by_order} = \@sorted_tags; |
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} |
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my $ds; |
There is also support for returning next or specific using: |
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$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
while (my $mf = WebPAC::Normalize:_get_marc_fields( fetch_next => 1 ) ) { |
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# do something with $mf |
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} |
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foreach my $field (@sorted_tags) { |
will always return fields from next MARC record or |
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my $row; |
my $mf = WebPAC::Normalize::_get_marc_fields( offset => 42 ); |
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#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
will return 42th copy record (if it exists). |
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foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
=cut |
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my $format; |
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$log->logdie("expected tag HASH and got $tag") unless (ref($tag) eq 'HASH'); |
sub _get_marc_fields { |
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$format = $tag->{'value'} || $tag->{'content'}; |
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my @v; |
my $arg = {@_}; |
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if ($self->{'lookup_regex'} && $format =~ $self->{'lookup_regex'}) { |
warn "### _get_marc_fields arg: ", dump($arg), $/ if ($debug > 2); |
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@v = $self->fill_in_to_arr($rec,$format); |
my $offset = $marc_fetch_offset; |
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} else { |
if ($arg->{offset}) { |
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@v = $self->parse_to_arr($rec,$format); |
$offset = $arg->{offset}; |
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} |
} elsif($arg->{fetch_next}) { |
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if (! @v) { |
$marc_fetch_offset++; |
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$log->debug("$field <",$self->{tag},"> format: $format no values"); |
} |
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# next; |
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} else { |
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$log->debug("$field <",$self->{tag},"> format: $format values: ", join(",", @v)); |
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} |
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if ($tag->{'sort'}) { |
return if (! $marc_record || ref($marc_record) ne 'ARRAY'); |
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@v = $self->sort_arr(@v); |
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} |
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# use format? |
warn "### full marc_record = ", dump( @{ $marc_record }), $/ if ($debug > 2); |
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if ($tag->{'format_name'}) { |
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@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
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} |
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# delimiter will join repeatable fields |
my $marc_rec = $marc_record->[ $offset ]; |
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if ($tag->{'delimiter'}) { |
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@v = ( join($tag->{'delimiter'}, @v) ); |
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} |
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# default types |
warn "## _get_marc_fields (at offset: $offset) -- marc_record = ", dump( @$marc_rec ), $/ if ($debug > 1); |
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my @types = qw(display search); |
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# override by type attribute |
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@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
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foreach my $type (@types) { |
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# append to previous line? |
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$log->debug("tag $field / $type [",sub { join(",",@v) }, "] ", $row->{'append'} || 'no append'); |
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if ($tag->{'append'}) { |
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# I will delimit appended part with |
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# delimiter (or ,) |
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my $d = $tag->{'delimiter'}; |
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# default delimiter |
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$d ||= " "; |
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my $last = pop @{$row->{$type}}; |
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$d = "" if (! $last); |
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$last .= $d . join($d, @v); |
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push @{$row->{$type}}, $last; |
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} else { |
return if (! $marc_rec || ref($marc_rec) ne 'ARRAY' || $#{ $marc_rec } < 0); |
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push @{$row->{$type}}, @v; |
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} |
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} |
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# first, sort all existing fields |
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# XXX might not be needed, but modern perl might randomize elements in hash |
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my @sorted_marc_record = sort { |
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$a->[0] . ( $a->[3] || '' ) cmp $b->[0] . ( $b->[3] || '') |
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} @{ $marc_rec }; |
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} |
@sorted_marc_record = @{ $marc_rec }; ### FIXME disable sorting |
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# output marc fields |
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my @m; |
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if ($row) { |
# count unique field-subfields (used for offset when walking to next subfield) |
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$row->{'tag'} = $field; |
my $u; |
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map { $u->{ $_->[0] . ( $_->[3] || '') }++ } @sorted_marc_record; |
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if ($debug) { |
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warn "## marc_repeatable_subfield = ", dump( $marc_repeatable_subfield ), $/ if ( $marc_repeatable_subfield ); |
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warn "## marc_record[$offset] = ", dump( $marc_rec ), $/; |
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warn "## sorted_marc_record = ", dump( \@sorted_marc_record ), $/; |
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warn "## subfield count = ", dump( $u ), $/; |
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} |
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# TODO: name_sigular, name_plural |
my $len = $#sorted_marc_record; |
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my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
my $visited; |
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my $row_name = $name ? $self->_x($name) : $field; |
my $i = 0; |
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my $field; |
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# post-sort all values in field |
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if ($self->{'import_xml'}->{'indexer'}->{$field}->{'sort'}) { |
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$log->warn("sort at field tag not implemented"); |
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} |
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$ds->{$row_name} = $row; |
foreach ( 0 .. $len ) { |
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$log->debug("row $field: ",sub { Dumper($row) }); |
# find next element which isn't visited |
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while ($visited->{$i}) { |
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$i = ($i + 1) % ($len + 1); |
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} |
} |
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} |
# mark it visited |
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$visited->{$i}++; |
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$self->{'db'}->save_ds( |
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id => $id, |
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ds => $ds, |
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prefix => $self->{prefix}, |
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) if ($self->{'db'}); |
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$log->debug("ds: ", sub { Dumper($ds) }); |
my $row = dclone( $sorted_marc_record[$i] ); |
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$log->logconfess("data structure returned is not array any more!") if wantarray; |
# field and subfield which is key for |
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# marc_repeatable_subfield and u |
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my $fsf = $row->[0] . ( $row->[3] || '' ); |
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if ($debug > 1) { |
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print "### field so far [", $#$field, "] : ", dump( $field ), " ", $field ? 'T' : 'F', $/; |
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print "### this [$i]: ", dump( $row ),$/; |
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print "### sf: ", $row->[3], " vs ", $field->[3], |
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$marc_repeatable_subfield->{ $row->[0] . $row->[3] } ? ' (repeatable)' : '', $/, |
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if ($#$field >= 0); |
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return $ds; |
} |
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} |
# if field exists |
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if ( $#$field >= 0 ) { |
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if ( |
| 290 |
|
$row->[0] ne $field->[0] || # field |
| 291 |
|
$row->[1] ne $field->[1] || # i1 |
| 292 |
|
$row->[2] ne $field->[2] # i2 |
| 293 |
|
) { |
| 294 |
|
push @m, $field; |
| 295 |
|
warn "## saved/1 ", dump( $field ),$/ if ($debug); |
| 296 |
|
$field = $row; |
| 297 |
|
|
| 298 |
|
} elsif ( |
| 299 |
|
( $row->[3] lt $field->[-2] ) # subfield which is not next (e.g. a after c) |
| 300 |
|
|| |
| 301 |
|
( $row->[3] eq $field->[-2] && # same subfield, but not repeatable |
| 302 |
|
! $marc_repeatable_subfield->{ $fsf } |
| 303 |
|
) |
| 304 |
|
) { |
| 305 |
|
push @m, $field; |
| 306 |
|
warn "## saved/2 ", dump( $field ),$/ if ($debug); |
| 307 |
|
$field = $row; |
| 308 |
|
|
| 309 |
=head2 parse |
} else { |
| 310 |
|
# append new subfields to existing field |
| 311 |
|
push @$field, ( $row->[3], $row->[4] ); |
| 312 |
|
} |
| 313 |
|
} else { |
| 314 |
|
# insert first field |
| 315 |
|
$field = $row; |
| 316 |
|
} |
| 317 |
|
|
| 318 |
Perform smart parsing of string, skipping delimiters for fields which aren't |
if (! $marc_repeatable_subfield->{ $fsf }) { |
| 319 |
defined. It can also eval code in format starting with C<eval{...}> and |
# make step to next subfield |
| 320 |
return output or nothing depending on eval code. |
$i = ($i + $u->{ $fsf } ) % ($len + 1); |
| 321 |
|
} |
| 322 |
|
} |
| 323 |
|
|
| 324 |
my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
if ($#$field >= 0) { |
| 325 |
|
push @m, $field; |
| 326 |
|
warn "## saved/3 ", dump( $field ),$/ if ($debug); |
| 327 |
|
} |
| 328 |
|
|
| 329 |
Filters are implemented here. While simple form of filters looks like this: |
return @m; |
| 330 |
|
} |
| 331 |
|
|
| 332 |
filter{name_of_filter} |
=head2 _debug |
| 333 |
|
|
| 334 |
but, filters can also have variable number of parametars like this: |
Change level of debug warnings |
| 335 |
|
|
| 336 |
filter{name_of_filter(param,param,param)} |
_debug( 2 ); |
| 337 |
|
|
| 338 |
=cut |
=cut |
| 339 |
|
|
| 340 |
my $warn_once; |
sub _debug { |
| 341 |
|
my $l = shift; |
| 342 |
sub parse { |
return $debug unless defined($l); |
| 343 |
my $self = shift; |
warn "debug level $l",$/ if ($l > 0); |
| 344 |
|
$debug = $l; |
| 345 |
my ($rec, $format_utf8, $i) = @_; |
} |
| 346 |
|
|
| 347 |
return if (! $format_utf8); |
=head1 Functions to create C<data_structure> |
| 348 |
|
|
| 349 |
my $log = $self->_get_logger(); |
Those functions generally have to first in your normalization file. |
| 350 |
|
|
| 351 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
=head2 tag |
| 352 |
|
|
| 353 |
$i = 0 if (! $i); |
Define new tag for I<search> and I<display>. |
| 354 |
|
|
| 355 |
my $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
tag('Title', rec('200','a') ); |
| 356 |
|
|
|
my @out; |
|
| 357 |
|
|
| 358 |
$log->debug("format: $format [$i]"); |
=cut |
| 359 |
|
|
| 360 |
my $eval_code; |
sub tag { |
| 361 |
# remove eval{...} from beginning |
my $name = shift or die "tag needs name as first argument"; |
| 362 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
my @o = grep { defined($_) && $_ ne '' } @_; |
| 363 |
|
return unless (@o); |
| 364 |
|
$out->{$name}->{tag} = $name; |
| 365 |
|
$out->{$name}->{search} = \@o; |
| 366 |
|
$out->{$name}->{display} = \@o; |
| 367 |
|
} |
| 368 |
|
|
| 369 |
my $filter_name; |
=head2 display |
|
# remove filter{...} from beginning |
|
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
|
| 370 |
|
|
| 371 |
# did we found any (att all) field from format in row? |
Define tag just for I<display> |
|
my $found_any; |
|
|
# prefix before first field which we preserve it $found_any |
|
|
my $prefix; |
|
| 372 |
|
|
| 373 |
my $f_step = 1; |
@v = display('Title', rec('200','a') ); |
| 374 |
|
|
| 375 |
while ($format =~ s/^(.*?)(v|s)(\d+)(?:\^(\w))?//s) { |
=cut |
| 376 |
|
|
| 377 |
my $del = $1 || ''; |
sub display { |
| 378 |
$prefix = $del if ($f_step == 1); |
my $name = shift or die "display needs name as first argument"; |
| 379 |
|
my @o = grep { defined($_) && $_ ne '' } @_; |
| 380 |
|
return unless (@o); |
| 381 |
|
$out->{$name}->{tag} = $name; |
| 382 |
|
$out->{$name}->{display} = \@o; |
| 383 |
|
} |
| 384 |
|
|
| 385 |
my $fld_type = lc($2); |
=head2 search |
| 386 |
|
|
| 387 |
# repeatable index |
Prepare values just for I<search> |
|
my $r = $i; |
|
|
if ($fld_type eq 's') { |
|
|
if ($found_any->{'v'}) { |
|
|
$r = 0; |
|
|
} else { |
|
|
return; |
|
|
} |
|
|
} |
|
| 388 |
|
|
| 389 |
my $found = 0; |
@v = search('Title', rec('200','a') ); |
|
my $tmp = $self->get_data(\$rec,$3,$4,$r,\$found); |
|
| 390 |
|
|
| 391 |
if ($found) { |
=cut |
|
$found_any->{$fld_type} += $found; |
|
| 392 |
|
|
| 393 |
# we will skip delimiter before first occurence of field! |
sub search { |
| 394 |
push @out, $del unless($found_any->{$fld_type} == 1); |
my $name = shift or die "search needs name as first argument"; |
| 395 |
push @out, $tmp; |
my @o = grep { defined($_) && $_ ne '' } @_; |
| 396 |
} |
return unless (@o); |
| 397 |
$f_step++; |
$out->{$name}->{tag} = $name; |
| 398 |
} |
$out->{$name}->{search} = \@o; |
| 399 |
|
} |
| 400 |
|
|
| 401 |
# test if any fields found? |
=head2 marc_leader |
|
return if (! $found_any->{'v'} && ! $found_any->{'s'}); |
|
| 402 |
|
|
| 403 |
my $out = join('',@out); |
Setup fields within MARC leader or get leader |
| 404 |
|
|
| 405 |
if ($out) { |
marc_leader('05','c'); |
| 406 |
# add rest of format (suffix) |
my $leader = marc_leader(); |
|
$out .= $format; |
|
| 407 |
|
|
| 408 |
# add prefix if not there |
=cut |
|
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
|
| 409 |
|
|
| 410 |
$log->debug("result: $out"); |
sub marc_leader { |
| 411 |
} |
my ($offset,$value) = @_; |
| 412 |
|
|
| 413 |
if ($eval_code) { |
if ($offset) { |
| 414 |
my $eval = $self->fill_in($rec,$eval_code,$i) || return; |
$out->{' leader'}->{ $offset } = $value; |
| 415 |
$log->debug("about to eval{$eval} format: $out"); |
} else { |
| 416 |
return if (! $self->_eval($eval)); |
return $out->{' leader'}; |
|
} |
|
|
|
|
|
if ($filter_name) { |
|
|
my @filter_args; |
|
|
if ($filter_name =~ s/(\w+)\((.*)\)/$1/) { |
|
|
@filter_args = split(/,/, $2); |
|
|
} |
|
|
if ($self->{'filter'}->{$filter_name}) { |
|
|
$log->debug("about to filter{$filter_name} format: $out with arguments: ", join(",", @filter_args)); |
|
|
unshift @filter_args, $out; |
|
|
$out = $self->{'filter'}->{$filter_name}->(@filter_args); |
|
|
return unless(defined($out)); |
|
|
$log->debug("filter result: $out"); |
|
|
} elsif (! $warn_once->{$filter_name}) { |
|
|
$log->warn("trying to use undefined filter $filter_name"); |
|
|
$warn_once->{$filter_name}++; |
|
|
} |
|
| 417 |
} |
} |
|
|
|
|
return $out; |
|
| 418 |
} |
} |
| 419 |
|
|
| 420 |
=head2 parse_to_arr |
=head2 marc |
| 421 |
|
|
| 422 |
Similar to C<parse>, but returns array of all repeatable fields |
Save value for MARC field |
| 423 |
|
|
| 424 |
my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
marc('900','a', rec('200','a') ); |
| 425 |
|
marc('001', rec('000') ); |
| 426 |
|
|
| 427 |
=cut |
=cut |
| 428 |
|
|
| 429 |
sub parse_to_arr { |
sub marc { |
| 430 |
my $self = shift; |
my $f = shift or die "marc needs field"; |
| 431 |
|
die "marc field must be numer" unless ($f =~ /^\d+$/); |
| 432 |
|
|
| 433 |
my ($rec, $format_utf8) = @_; |
my $sf; |
| 434 |
|
if ($f >= 10) { |
| 435 |
my $log = $self->_get_logger(); |
$sf = shift or die "marc needs subfield"; |
|
|
|
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
|
|
return if (! $format_utf8); |
|
|
|
|
|
my $i = 0; |
|
|
my @arr; |
|
|
|
|
|
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
|
|
push @arr, $v; |
|
| 436 |
} |
} |
| 437 |
|
|
| 438 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
foreach (@_) { |
| 439 |
|
my $v = $_; # make var read-write for Encode |
| 440 |
return @arr; |
next unless (defined($v) && $v !~ /^\s*$/); |
| 441 |
|
from_to($v, 'iso-8859-2', $marc_encoding) if ($marc_encoding); |
| 442 |
|
my ($i1,$i2) = defined($marc_indicators->{$f}) ? @{ $marc_indicators->{$f} } : (' ',' '); |
| 443 |
|
if (defined $sf) { |
| 444 |
|
push @{ $marc_record->[ $marc_record_offset ] }, [ $f, $i1, $i2, $sf => $v ]; |
| 445 |
|
} else { |
| 446 |
|
push @{ $marc_record->[ $marc_record_offset ] }, [ $f, $v ]; |
| 447 |
|
} |
| 448 |
|
} |
| 449 |
} |
} |
| 450 |
|
|
| 451 |
|
=head2 marc_repeatable_subfield |
| 452 |
|
|
| 453 |
|
Save values for MARC repetable subfield |
| 454 |
|
|
| 455 |
=head2 fill_in |
marc_repeatable_subfield('910', 'z', rec('909') ); |
| 456 |
|
|
| 457 |
Workhourse of all: takes record from in-memory structure of database and |
=cut |
|
strings with placeholders and returns string or array of with substituted |
|
|
values from record. |
|
| 458 |
|
|
| 459 |
my $text = $webpac->fill_in($rec,'v250^a'); |
sub marc_repeatable_subfield { |
| 460 |
|
my ($f,$sf) = @_; |
| 461 |
|
die "marc_repeatable_subfield need field and subfield!\n" unless ($f && $sf); |
| 462 |
|
$marc_repeatable_subfield->{ $f . $sf }++; |
| 463 |
|
marc(@_); |
| 464 |
|
} |
| 465 |
|
|
| 466 |
Optional argument is ordinal number for repeatable fields. By default, |
=head2 marc_indicators |
|
it's assume to be first repeatable field (fields are perl array, so first |
|
|
element is 0). |
|
|
Following example will read second value from repeatable field. |
|
| 467 |
|
|
| 468 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
Set both indicators for MARC field |
| 469 |
|
|
| 470 |
This function B<does not> perform parsing of format to inteligenty skip |
marc_indicators('900', ' ', 1); |
|
delimiters before fields which aren't used. |
|
| 471 |
|
|
| 472 |
This method will automatically decode UTF-8 string to local code page |
Any indicator value other than C<0-9> will be treated as undefined. |
|
if needed. |
|
| 473 |
|
|
| 474 |
=cut |
=cut |
| 475 |
|
|
| 476 |
sub fill_in { |
sub marc_indicators { |
| 477 |
my $self = shift; |
my $f = shift || die "marc_indicators need field!\n"; |
| 478 |
|
my ($i1,$i2) = @_; |
| 479 |
|
die "marc_indicators($f, ...) need i1!\n" unless(defined($i1)); |
| 480 |
|
die "marc_indicators($f, $i1, ...) need i2!\n" unless(defined($i2)); |
| 481 |
|
|
| 482 |
my $log = $self->_get_logger(); |
$i1 = ' ' if ($i1 !~ /^\d$/); |
| 483 |
|
$i2 = ' ' if ($i2 !~ /^\d$/); |
| 484 |
|
@{ $marc_indicators->{$f} } = ($i1,$i2); |
| 485 |
|
} |
| 486 |
|
|
| 487 |
my $rec = shift || $log->logconfess("need data record"); |
=head2 marc_compose |
|
my $format = shift || $log->logconfess("need format to parse"); |
|
|
# iteration (for repeatable fields) |
|
|
my $i = shift || 0; |
|
| 488 |
|
|
| 489 |
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
Save values for each MARC subfield explicitly |
| 490 |
|
|
| 491 |
# FIXME remove for speedup? |
marc_compose('900', |
| 492 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
'a', rec('200','a') |
| 493 |
|
'b', rec('201','a') |
| 494 |
|
'a', rec('200','b') |
| 495 |
|
'c', rec('200','c') |
| 496 |
|
); |
| 497 |
|
|
| 498 |
if (utf8::is_utf8($format)) { |
=cut |
|
$format = $self->_x($format); |
|
|
} |
|
| 499 |
|
|
| 500 |
my $found = 0; |
sub marc_compose { |
| 501 |
my $just_single = 1; |
my $f = shift or die "marc_compose needs field"; |
| 502 |
|
die "marc_compose field must be numer" unless ($f =~ /^\d+$/); |
| 503 |
|
|
| 504 |
my $eval_code; |
my ($i1,$i2) = defined($marc_indicators->{$f}) ? @{ $marc_indicators->{$f} } : (' ',' '); |
| 505 |
# remove eval{...} from beginning |
my $m = [ $f, $i1, $i2 ]; |
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
|
| 506 |
|
|
| 507 |
my $filter_name; |
while (@_) { |
| 508 |
# remove filter{...} from beginning |
my $sf = shift or die "marc_compose $f needs subfield"; |
| 509 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
my $v = shift; |
| 510 |
|
|
| 511 |
# do actual replacement of placeholders |
next unless (defined($v) && $v !~ /^\s*$/); |
| 512 |
# repeatable fields |
from_to($v, 'iso-8859-2', $marc_encoding) if ($marc_encoding); |
| 513 |
if ($format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges) { |
push @$m, ( $sf, $v ); |
| 514 |
$just_single = 0; |
warn "## ++ marc_compose($f,$sf,$v) ", dump( $m ),$/ if ($debug > 1); |
| 515 |
} |
} |
| 516 |
|
|
| 517 |
# non-repeatable fields |
warn "## marc_compose(d) ", dump( $m ),$/ if ($debug > 1); |
|
if ($format =~ s/s(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,0,\$found)/ges) { |
|
|
return if ($i > 0 && $just_single); |
|
|
} |
|
| 518 |
|
|
| 519 |
if ($found) { |
push @{ $marc_record->[ $marc_record_offset ] }, $m if ($#{$m} > 2); |
|
$log->debug("format: $format"); |
|
|
if ($eval_code) { |
|
|
my $eval = $self->fill_in($rec,$eval_code,$i); |
|
|
return if (! $self->_eval($eval)); |
|
|
} |
|
|
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
|
|
$log->debug("filter '$filter_name' for $format"); |
|
|
$format = $self->{'filter'}->{$filter_name}->($format); |
|
|
return unless(defined($format)); |
|
|
$log->debug("filter result: $format"); |
|
|
} |
|
|
# do we have lookups? |
|
|
if ($self->{'lookup'}) { |
|
|
if ($self->{'lookup'}->can('lookup')) { |
|
|
my @lookup = $self->{lookup}->lookup($format); |
|
|
$log->debug("lookup $format", join(", ", @lookup)); |
|
|
return @lookup; |
|
|
} else { |
|
|
$log->warn("Have lookup object but can't invoke lookup method"); |
|
|
} |
|
|
} else { |
|
|
return $format; |
|
|
} |
|
|
} else { |
|
|
return; |
|
|
} |
|
| 520 |
} |
} |
| 521 |
|
|
| 522 |
|
=head2 marc_duplicate |
| 523 |
|
|
| 524 |
=head2 fill_in_to_arr |
Generate copy of current MARC record and continue working on copy |
| 525 |
|
|
| 526 |
Similar to C<fill_in>, but returns array of all repeatable fields. Usable |
marc_duplicate(); |
|
for fields which have lookups, so they shouldn't be parsed but rather |
|
|
C<fill_id>ed. |
|
| 527 |
|
|
| 528 |
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]'); |
Copies can be accessed using C<< _get_marc_fields( fetch_next => 1 ) >> or |
| 529 |
|
C<< _get_marc_fields( offset => 42 ) >>. |
| 530 |
|
|
| 531 |
=cut |
=cut |
| 532 |
|
|
| 533 |
sub fill_in_to_arr { |
sub marc_duplicate { |
| 534 |
my $self = shift; |
my $m = $marc_record->[ -1 ]; |
| 535 |
|
die "can't duplicate record which isn't defined" unless ($m); |
| 536 |
|
push @{ $marc_record }, dclone( $m ); |
| 537 |
|
warn "## marc_duplicate = ", dump(@$marc_record), $/ if ($debug > 1); |
| 538 |
|
$marc_record_offset = $#{ $marc_record }; |
| 539 |
|
warn "## marc_record_offset = $marc_record_offset", $/ if ($debug > 1); |
| 540 |
|
} |
| 541 |
|
|
| 542 |
my ($rec, $format_utf8) = @_; |
=head2 marc_remove |
| 543 |
|
|
| 544 |
my $log = $self->_get_logger(); |
Remove some field or subfield from MARC record. |
| 545 |
|
|
| 546 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
marc_remove('200'); |
| 547 |
return if (! $format_utf8); |
marc_remove('200','a'); |
| 548 |
|
|
| 549 |
my $i = 0; |
This will erase field C<200> or C<200^a> from current MARC record. |
|
my @arr; |
|
| 550 |
|
|
| 551 |
while (my $v = $self->fill_in($rec,$format_utf8,$i++)) { |
This is useful after calling C<marc_duplicate> or on it's own (but, you |
| 552 |
push @arr, $v; |
should probably just remove that subfield definition if you are not |
| 553 |
} |
using C<marc_duplicate>). |
| 554 |
|
|
| 555 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
FIXME: support fields < 10. |
|
|
|
|
return @arr; |
|
|
} |
|
| 556 |
|
|
| 557 |
|
=cut |
| 558 |
|
|
| 559 |
=head2 get_data |
sub marc_remove { |
| 560 |
|
my ($f, $sf) = @_; |
| 561 |
|
|
| 562 |
Returns value from record. |
die "marc_remove needs record number" unless defined($f); |
| 563 |
|
|
| 564 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found,\$fld_occurances); |
my $marc = $marc_record->[ $marc_record_offset ]; |
| 565 |
|
|
| 566 |
Required arguments are: |
warn "### marc_remove before = ", dump( $marc ), $/ if ($debug > 2); |
| 567 |
|
|
| 568 |
=over 8 |
foreach my $i ( 0 .. $#{ $marc } ) { |
| 569 |
|
last unless (defined $marc->[$i]); |
| 570 |
|
warn "#### working on ",dump( @{ $marc->[$i] }), $/ if ($debug > 3); |
| 571 |
|
if ($marc->[$i]->[0] eq $f) { |
| 572 |
|
if (! defined $sf) { |
| 573 |
|
# remove whole field |
| 574 |
|
splice @$marc, $i, 1; |
| 575 |
|
warn "#### slice \@\$marc, $i, 1 = ",dump( @{ $marc }), $/ if ($debug > 3); |
| 576 |
|
$i--; |
| 577 |
|
} else { |
| 578 |
|
foreach my $j ( 0 .. (( $#{ $marc->[$i] } - 3 ) / 2) ) { |
| 579 |
|
my $o = ($j * 2) + 3; |
| 580 |
|
if ($marc->[$i]->[$o] eq $sf) { |
| 581 |
|
# remove subfield |
| 582 |
|
splice @{$marc->[$i]}, $o, 2; |
| 583 |
|
warn "#### slice \@{\$marc->[$i]}, $o, 2 = ", dump( @{ $marc }), $/ if ($debug > 3); |
| 584 |
|
# is record now empty? |
| 585 |
|
if ($#{ $marc->[$i] } == 2) { |
| 586 |
|
splice @$marc, $i, 1; |
| 587 |
|
warn "#### slice \@\$marc, $i, 1 = ", dump( @{ $marc }), $/ if ($debug > 3); |
| 588 |
|
$i--; |
| 589 |
|
}; |
| 590 |
|
} |
| 591 |
|
} |
| 592 |
|
} |
| 593 |
|
} |
| 594 |
|
} |
| 595 |
|
|
| 596 |
=item C<$rec> |
warn "### marc_remove($f", $sf ? ",$sf" : "", ") after = ", dump( $marc ), $/ if ($debug > 2); |
| 597 |
|
|
| 598 |
record reference |
$marc_record->[ $marc_record_offset ] = $marc; |
| 599 |
|
|
| 600 |
=item C<$f> |
warn "## full marc_record = ", dump( @{ $marc_record }), $/ if ($debug > 1); |
| 601 |
|
} |
| 602 |
|
|
| 603 |
field |
=head1 Functions to extract data from input |
| 604 |
|
|
| 605 |
=item C<$sf> |
This function should be used inside functions to create C<data_structure> described |
| 606 |
|
above. |
| 607 |
|
|
| 608 |
optional subfield |
=head2 rec1 |
| 609 |
|
|
| 610 |
=item C<$i> |
Return all values in some field |
| 611 |
|
|
| 612 |
index offset for repeatable values ( 0 ... $#occurances ) |
@v = rec1('200') |
| 613 |
|
|
| 614 |
=item C<$found> |
TODO: order of values is probably same as in source data, need to investigate that |
| 615 |
|
|
| 616 |
optional variable that will be incremeted if preset |
=cut |
| 617 |
|
|
| 618 |
=item C<$fld_occurances> |
sub rec1 { |
| 619 |
|
my $f = shift; |
| 620 |
|
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
| 621 |
|
return unless (defined($rec) && defined($rec->{$f})); |
| 622 |
|
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
| 623 |
|
if (ref($rec->{$f}) eq 'ARRAY') { |
| 624 |
|
return map { |
| 625 |
|
if (ref($_) eq 'HASH') { |
| 626 |
|
values %{$_}; |
| 627 |
|
} else { |
| 628 |
|
$_; |
| 629 |
|
} |
| 630 |
|
} @{ $rec->{$f} }; |
| 631 |
|
} elsif( defined($rec->{$f}) ) { |
| 632 |
|
return $rec->{$f}; |
| 633 |
|
} |
| 634 |
|
} |
| 635 |
|
|
| 636 |
hash to hold maximum occurances of C<field\tsubfield> combinations |
=head2 rec2 |
|
(which can be accessed using keys in same format) |
|
| 637 |
|
|
| 638 |
=back |
Return all values in specific field and subfield |
| 639 |
|
|
| 640 |
Returns value or empty string, updates C<$found> and C<fld_occurences> |
@v = rec2('200','a') |
|
if present. |
|
| 641 |
|
|
| 642 |
=cut |
=cut |
| 643 |
|
|
| 644 |
sub get_data { |
sub rec2 { |
| 645 |
my $self = shift; |
my $f = shift; |
| 646 |
|
return unless (defined($rec && $rec->{$f})); |
| 647 |
|
my $sf = shift; |
| 648 |
|
return map { $_->{$sf} } grep { ref($_) eq 'HASH' && $_->{$sf} } @{ $rec->{$f} }; |
| 649 |
|
} |
| 650 |
|
|
| 651 |
my ($rec,$f,$sf,$i,$found,$cache) = @_; |
=head2 rec |
| 652 |
|
|
| 653 |
return '' unless ($$rec->{$f} && ref($$rec->{$f}) eq 'ARRAY'); |
syntaxtic sugar for |
| 654 |
|
|
| 655 |
if (defined($$cache)) { |
@v = rec('200') |
| 656 |
$$cache->{"$f\t$sf"} ||= $$#rec->{$f}; |
@v = rec('200','a') |
|
} |
|
| 657 |
|
|
| 658 |
return '' unless ($$rec->{$f}->[$i]); |
=cut |
| 659 |
|
|
| 660 |
{ |
sub rec { |
| 661 |
no strict 'refs'; |
if ($#_ == 0) { |
| 662 |
if (defined($sf)) { |
return rec1(@_); |
| 663 |
$$found++ if (defined($$found) && $$rec->{$f}->[$i]->{$sf}); |
} elsif ($#_ == 1) { |
| 664 |
return $$rec->{$f}->[$i]->{$sf}; |
return rec2(@_); |
|
} else { |
|
|
$$found++ if (defined($$found)); |
|
|
# it still might have subfields, just |
|
|
# not specified, so we'll dump some debug info |
|
|
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
|
|
my $out; |
|
|
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
|
|
$out .= '$' . $k .':' . $$rec->{$f}->[$i]->{$k}." "; |
|
|
} |
|
|
return $out; |
|
|
} else { |
|
|
return $$rec->{$f}->[$i]; |
|
|
} |
|
|
} |
|
| 665 |
} |
} |
| 666 |
} |
} |
| 667 |
|
|
| 668 |
|
=head2 regex |
| 669 |
|
|
| 670 |
=head2 apply_format |
Apply regex to some or all values |
| 671 |
|
|
| 672 |
Apply format specified in tag with C<format_name="name"> and |
@v = regex( 's/foo/bar/g', @v ); |
|
C<format_delimiter=";;">. |
|
|
|
|
|
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
|
|
|
|
|
Formats can contain C<lookup{...}> if you need them. |
|
| 673 |
|
|
| 674 |
=cut |
=cut |
| 675 |
|
|
| 676 |
sub apply_format { |
sub regex { |
| 677 |
my $self = shift; |
my $r = shift; |
| 678 |
|
my @out; |
| 679 |
|
#warn "r: $r\n", dump(\@_); |
| 680 |
|
foreach my $t (@_) { |
| 681 |
|
next unless ($t); |
| 682 |
|
eval "\$t =~ $r"; |
| 683 |
|
push @out, $t if ($t && $t ne ''); |
| 684 |
|
} |
| 685 |
|
return @out; |
| 686 |
|
} |
| 687 |
|
|
| 688 |
my ($name,$delimiter,$data) = @_; |
=head2 prefix |
| 689 |
|
|
| 690 |
my $log = $self->_get_logger(); |
Prefix all values with a string |
| 691 |
|
|
| 692 |
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
@v = prefix( 'my_', @v ); |
|
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
|
|
return $data; |
|
|
} |
|
| 693 |
|
|
| 694 |
$log->warn("no delimiter for format $name") if (! $delimiter); |
=cut |
| 695 |
|
|
| 696 |
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
sub prefix { |
| 697 |
|
my $p = shift or die "prefix needs string as first argument"; |
| 698 |
|
return map { $p . $_ } grep { defined($_) } @_; |
| 699 |
|
} |
| 700 |
|
|
| 701 |
my @data = split(/\Q$delimiter\E/, $data); |
=head2 suffix |
| 702 |
|
|
| 703 |
my $out = sprintf($format, @data); |
suffix all values with a string |
|
$log->debug("using format $name [$format] on $data to produce: $out"); |
|
| 704 |
|
|
| 705 |
if ($self->{'lookup_regex'} && $out =~ $self->{'lookup_regex'}) { |
@v = suffix( '_my', @v ); |
|
return $self->{'lookup'}->lookup($out); |
|
|
} else { |
|
|
return $out; |
|
|
} |
|
| 706 |
|
|
| 707 |
|
=cut |
| 708 |
|
|
| 709 |
|
sub suffix { |
| 710 |
|
my $s = shift or die "suffix needs string as first argument"; |
| 711 |
|
return map { $_ . $s } grep { defined($_) } @_; |
| 712 |
} |
} |
| 713 |
|
|
| 714 |
=head2 sort_arr |
=head2 surround |
| 715 |
|
|
| 716 |
Sort array ignoring case and html in data |
surround all values with a two strings |
| 717 |
|
|
| 718 |
my @sorted = $webpac->sort_arr(@unsorted); |
@v = surround( 'prefix_', '_suffix', @v ); |
| 719 |
|
|
| 720 |
=cut |
=cut |
| 721 |
|
|
| 722 |
sub sort_arr { |
sub surround { |
| 723 |
my $self = shift; |
my $p = shift or die "surround need prefix as first argument"; |
| 724 |
|
my $s = shift or die "surround needs suffix as second argument"; |
| 725 |
|
return map { $p . $_ . $s } grep { defined($_) } @_; |
| 726 |
|
} |
| 727 |
|
|
| 728 |
my $log = $self->_get_logger(); |
=head2 first |
| 729 |
|
|
| 730 |
# FIXME add Schwartzian Transformation? |
Return first element |
| 731 |
|
|
| 732 |
my @sorted = sort { |
$v = first( @v ); |
|
$a =~ s#<[^>]+/*>##; |
|
|
$b =~ s#<[^>]+/*>##; |
|
|
lc($b) cmp lc($a) |
|
|
} @_; |
|
|
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
|
| 733 |
|
|
| 734 |
return @sorted; |
=cut |
|
} |
|
| 735 |
|
|
| 736 |
|
sub first { |
| 737 |
|
my $r = shift; |
| 738 |
|
return $r; |
| 739 |
|
} |
| 740 |
|
|
| 741 |
=head1 INTERNAL METHODS |
=head2 lookup |
| 742 |
|
|
| 743 |
=head2 _sort_by_order |
Consult lookup hashes for some value |
| 744 |
|
|
| 745 |
Sort xml tags data structure accoding to C<order=""> attribute. |
@v = lookup( $v ); |
| 746 |
|
@v = lookup( @v ); |
| 747 |
|
|
| 748 |
=cut |
=cut |
| 749 |
|
|
| 750 |
sub _sort_by_order { |
sub lookup { |
| 751 |
my $self = shift; |
my $k = shift or return; |
| 752 |
|
return unless (defined($lookup->{$k})); |
| 753 |
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
if (ref($lookup->{$k}) eq 'ARRAY') { |
| 754 |
$self->{'import_xml'}->{'indexer'}->{$a}; |
return @{ $lookup->{$k} }; |
| 755 |
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
} else { |
| 756 |
$self->{'import_xml'}->{'indexer'}->{$b}; |
return $lookup->{$k}; |
| 757 |
|
} |
|
return $va <=> $vb; |
|
| 758 |
} |
} |
| 759 |
|
|
| 760 |
=head2 _x |
=head2 join_with |
| 761 |
|
|
| 762 |
Convert strings from C<conf/normalize/*.xml> encoding into application |
Joins walues with some delimiter |
|
specific encoding (optinally specified using C<code_page> to C<new> |
|
|
constructor). |
|
| 763 |
|
|
| 764 |
my $text = $n->_x('normalize text string'); |
$v = join_with(", ", @v); |
|
|
|
|
This is a stub so that other modules doesn't have to implement it. |
|
| 765 |
|
|
| 766 |
=cut |
=cut |
| 767 |
|
|
| 768 |
sub _x { |
sub join_with { |
| 769 |
my $self = shift; |
my $d = shift; |
| 770 |
return shift; |
return join($d, grep { defined($_) && $_ ne '' } @_); |
| 771 |
} |
} |
| 772 |
|
|
| 773 |
|
=head2 split_rec_on |
| 774 |
|
|
| 775 |
=head1 AUTHOR |
Split record subfield on some regex and take one of parts out |
|
|
|
|
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
|
| 776 |
|
|
| 777 |
=head1 COPYRIGHT & LICENSE |
$a_before_semi_column = |
| 778 |
|
split_rec_on('200','a', /\s*;\s*/, $part); |
| 779 |
|
|
| 780 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
C<$part> is optional number of element. First element is |
| 781 |
|
B<1>, not 0! |
| 782 |
|
|
| 783 |
This program is free software; you can redistribute it and/or modify it |
If there is no C<$part> parameter or C<$part> is 0, this function will |
| 784 |
under the same terms as Perl itself. |
return all values produced by splitting. |
| 785 |
|
|
| 786 |
=cut |
=cut |
| 787 |
|
|
| 788 |
1; # End of WebPAC::Normalize |
sub split_rec_on { |
| 789 |
|
die "split_rec_on need (fld,sf,regex[,part]" if ($#_ < 2); |
| 790 |
|
|
| 791 |
|
my ($fld, $sf, $regex, $part) = @_; |
| 792 |
|
warn "### regex ", ref($regex), $regex, $/ if ($debug > 2); |
| 793 |
|
|
| 794 |
|
my @r = rec( $fld, $sf ); |
| 795 |
|
my $v = shift @r; |
| 796 |
|
warn "### first rec($fld,$sf) = ",dump($v),$/ if ($debug > 2); |
| 797 |
|
|
| 798 |
|
return '' if( ! defined($v) || $v =~ /^\s*$/); |
| 799 |
|
|
| 800 |
|
my @s = split( $regex, $v ); |
| 801 |
|
warn "## split_rec_on($fld,$sf,$regex,$part) = ",dump(@s),$/ if ($debug > 1); |
| 802 |
|
if ($part && $part > 0) { |
| 803 |
|
return $s[ $part - 1 ]; |
| 804 |
|
} else { |
| 805 |
|
return @s; |
| 806 |
|
} |
| 807 |
|
} |
| 808 |
|
|
| 809 |
|
# END |
| 810 |
|
1; |
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