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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 base 'WebPAC::Common'; |
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use Data::Dumper; |
#use base qw/WebPAC::Common/; |
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use Data::Dump qw/dump/; |
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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 0.06 |
Version 0.12 |
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=cut |
=cut |
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our $VERSION = '0.06'; |
our $VERSION = '0.12'; |
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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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} |
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my $r = $self->{'lookup_regex'} ? 1 : 0; |
=head2 _set_lookup |
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my $l = $self->{'lookup'} ? 1 : 0; |
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my $log = $self->_get_logger(); |
Set current lookup hash |
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# those two must be in pair |
_set_lookup( $lookup ); |
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if ( ($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'} && ! $self->{'lookup'}->isa('WebPAC::Lookup')); |
=cut |
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$log->warn("no prefix defined. please check that!") unless ($self->{'prefix'}); |
my $lookup; |
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$log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l); |
sub _set_lookup { |
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$lookup = shift; |
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} |
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if ($self->{filter} && ! $self->{filter}->{regex}) { |
=head2 _get_marc_fields |
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$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 $self : return undef; |
Get all fields defined by calls to C<marc> |
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} |
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$marc->add_fields( WebPAC::Normalize:_get_marc_fields() ); |
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=head2 data_structure |
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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Create in-memory data structure which represents normalized layout from |
Repeatable field is created when there is second occurence of same subfield or |
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C<conf/normalize/*.xml>. |
if any of indicators are different. |
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This structures are used to produce output. |
This is sane for most cases. Something like: |
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my $ds = $webpac->data_structure($rec); |
900a-1 900b-1 900c-1 |
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900a-2 900b-2 |
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900a-3 |
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=cut |
will be created from any combination of: |
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sub data_structure { |
900a-1 900a-2 900a-3 900b-1 900b-2 900c-1 |
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my $self = shift; |
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my $log = $self->_get_logger(); |
and following rules: |
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my $rec = shift; |
marc('900','a', rec('200','a') ); |
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$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
marc('900','b', rec('200','b') ); |
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marc('900','c', rec('200','c') ); |
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$log->debug("data_structure rec = ", sub { Dumper($rec) }); |
which might not be what you have in mind. If you need repeatable subfield, |
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define it using C<marc_repeatable_subfield> like this: |
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$log->logdie("need unique ID (mfn) in field 000 of record ", sub { Dumper($rec) } ) unless (defined($rec->{'000'})); |
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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my $id = $rec->{'000'}->[0] || $log->logdie("field 000 isn't array!"); |
will create: |
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my $cache_file; |
900a-1 900a-2 900a-3 900b-1 900c-1 |
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900b-2 |
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if ($self->{'db'}) { |
There is also support for returning next or specific using: |
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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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undef $self->{'currnet_filename'}; |
while (my $mf = WebPAC::Normalize:_get_marc_fields( fetch_next => 1 ) ) { |
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undef $self->{'headline'}; |
# do something with $mf |
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} |
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my @sorted_tags; |
will always return fields from next MARC record or |
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if ($self->{tags_by_order}) { |
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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; |
my $mf = WebPAC::Normalize::_get_marc_fields( offset => 42 ); |
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$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
will return 42th copy record (if it exists). |
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foreach my $field (@sorted_tags) { |
=cut |
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my $row; |
sub _get_marc_fields { |
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#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
my $arg = {@_}; |
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warn "### _get_marc_fields arg: ", dump($arg), $/ if ($debug > 2); |
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my $offset = $marc_fetch_offset; |
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if ($arg->{offset}) { |
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$offset = $arg->{offset}; |
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} elsif($arg->{fetch_next}) { |
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$marc_fetch_offset++; |
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} |
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foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
return if (! $marc_record || ref($marc_record) ne 'ARRAY'); |
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my $format; |
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$log->logdie("expected tag HASH and got $tag") unless (ref($tag) eq 'HASH'); |
warn "### full marc_record = ", dump( @{ $marc_record }), $/ if ($debug > 2); |
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$format = $tag->{'value'} || $tag->{'content'}; |
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$log->debug("format: $format"); |
my $marc_rec = $marc_record->[ $offset ]; |
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my @v; |
warn "## _get_marc_fields (at offset: $offset) -- marc_record = ", dump( @$marc_rec ), $/ if ($debug > 1); |
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if ($self->{'lookup_regex'} && $format =~ $self->{'lookup_regex'}) { |
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@v = $self->fill_in_to_arr($rec,$format); |
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} else { |
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@v = $self->parse_to_arr($rec,$format); |
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} |
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next if (! @v); |
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if ($tag->{'sort'}) { |
return if (! $marc_rec || ref($marc_rec) ne 'ARRAY' || $#{ $marc_rec } < 0); |
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@v = $self->sort_arr(@v); |
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} |
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# use format? |
# first, sort all existing fields |
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if ($tag->{'format_name'}) { |
# XXX might not be needed, but modern perl might randomize elements in hash |
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@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
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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# delimiter will join repeatable fields |
@sorted_marc_record = @{ $marc_rec }; ### FIXME disable sorting |
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if ($tag->{'delimiter'}) { |
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@v = ( join($tag->{'delimiter'}, @v) ); |
# output marc fields |
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} |
my @m; |
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# count unique field-subfields (used for offset when walking to next subfield) |
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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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# default types |
my $len = $#sorted_marc_record; |
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my @types = qw(display search); |
my $visited; |
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# override by type attribute |
my $i = 0; |
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@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
my $field; |
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foreach my $type (@types) { |
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# append to previous line? |
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$log->debug("type: $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 { |
foreach ( 0 .. $len ) { |
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push @{$row->{$type}}, @v; |
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} |
# find next element which isn't visited |
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} |
while ($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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my $row = dclone( $sorted_marc_record[$i] ); |
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# 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)' : '', $/, |
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if ($#$field >= 0); |
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} |
} |
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if ($row) { |
# if field exists |
288 |
$row->{'tag'} = $field; |
if ( $#$field >= 0 ) { |
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if ( |
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$row->[0] ne $field->[0] || # field |
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$row->[1] ne $field->[1] || # i1 |
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$row->[2] ne $field->[2] # i2 |
293 |
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) { |
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push @m, $field; |
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warn "## saved/1 ", dump( $field ),$/ if ($debug); |
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$field = $row; |
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} elsif ( |
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( $row->[3] lt $field->[-2] ) # subfield which is not next (e.g. a after c) |
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|| |
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( $row->[3] eq $field->[-2] && # same subfield, but not repeatable |
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! $marc_repeatable_subfield->{ $fsf } |
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) |
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) { |
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push @m, $field; |
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warn "## saved/2 ", dump( $field ),$/ if ($debug); |
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$field = $row; |
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# TODO: name_sigular, name_plural |
} else { |
310 |
my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
# append new subfields to existing field |
311 |
my $row_name = $name ? $self->_x($name) : $field; |
push @$field, ( $row->[3], $row->[4] ); |
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# post-sort all values in field |
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if ($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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} else { |
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# insert first field |
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$field = $row; |
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} |
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$ds->{$row_name} = $row; |
if (! $marc_repeatable_subfield->{ $fsf }) { |
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# make step to next subfield |
320 |
$log->debug("row $field: ",sub { Dumper($row) }); |
$i = ($i + $u->{ $fsf } ) % ($len + 1); |
321 |
} |
} |
322 |
|
} |
323 |
|
|
324 |
|
if ($#$field >= 0) { |
325 |
|
push @m, $field; |
326 |
|
warn "## saved/3 ", dump( $field ),$/ if ($debug); |
327 |
} |
} |
328 |
|
|
329 |
$self->{'db'}->save_ds( |
return \@m; |
330 |
id => $id, |
} |
|
ds => $ds, |
|
|
prefix => $self->{prefix}, |
|
|
) if ($self->{'db'}); |
|
331 |
|
|
332 |
$log->debug("ds: ", sub { Dumper($ds) }); |
=head2 _debug |
333 |
|
|
334 |
$log->logconfess("data structure returned is not array any more!") if wantarray; |
Change level of debug warnings |
335 |
|
|
336 |
return $ds; |
_debug( 2 ); |
337 |
|
|
338 |
} |
=cut |
339 |
|
|
340 |
=head2 parse |
sub _debug { |
341 |
|
my $l = shift; |
342 |
|
return $debug unless defined($l); |
343 |
|
warn "debug level $l",$/ if ($l > 0); |
344 |
|
$debug = $l; |
345 |
|
} |
346 |
|
|
347 |
Perform smart parsing of string, skipping delimiters for fields which aren't |
=head1 Functions to create C<data_structure> |
|
defined. It can also eval code in format starting with C<eval{...}> and |
|
|
return output or nothing depending on eval code. |
|
348 |
|
|
349 |
my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
Those functions generally have to first in your normalization file. |
350 |
|
|
351 |
Filters are implemented here. While simple form of filters looks like this: |
=head2 tag |
352 |
|
|
353 |
filter{name_of_filter} |
Define new tag for I<search> and I<display>. |
354 |
|
|
355 |
but, filters can also have variable number of parametars like this: |
tag('Title', rec('200','a') ); |
356 |
|
|
|
filter{name_of_filter(param,param,param)} |
|
357 |
|
|
358 |
=cut |
=cut |
359 |
|
|
360 |
my $warn_once; |
sub tag { |
361 |
|
my $name = shift or die "tag needs name as first argument"; |
362 |
sub parse { |
my @o = grep { defined($_) && $_ ne '' } @_; |
363 |
my $self = shift; |
return unless (@o); |
364 |
|
$out->{$name}->{tag} = $name; |
365 |
|
$out->{$name}->{search} = \@o; |
366 |
|
$out->{$name}->{display} = \@o; |
367 |
|
} |
368 |
|
|
369 |
my ($rec, $format_utf8, $i) = @_; |
=head2 display |
370 |
|
|
371 |
return if (! $format_utf8); |
Define tag just for I<display> |
372 |
|
|
373 |
my $log = $self->_get_logger(); |
@v = display('Title', rec('200','a') ); |
374 |
|
|
375 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
=cut |
376 |
|
|
377 |
$i = 0 if (! $i); |
sub display { |
378 |
|
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 $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
=head2 search |
386 |
|
|
387 |
my @out; |
Prepare values just for I<search> |
388 |
|
|
389 |
$log->debug("format: $format"); |
@v = search('Title', rec('200','a') ); |
390 |
|
|
391 |
my $eval_code; |
=cut |
|
# remove eval{...} from beginning |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
|
392 |
|
|
393 |
my $filter_name; |
sub search { |
394 |
# remove filter{...} from beginning |
my $name = shift or die "search needs name as first argument"; |
395 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
my @o = grep { defined($_) && $_ ne '' } @_; |
396 |
|
return unless (@o); |
397 |
|
$out->{$name}->{tag} = $name; |
398 |
|
$out->{$name}->{search} = \@o; |
399 |
|
} |
400 |
|
|
401 |
my $prefix; |
=head2 marc_leader |
|
my $all_found=0; |
|
402 |
|
|
403 |
while ($format =~ s/^(.*?)(v|s)(\d+)(?:\^(\w))?//s) { |
Setup fields within MARC leader or get leader |
404 |
|
|
405 |
my $del = $1 || ''; |
marc_leader('05','c'); |
406 |
$prefix ||= $del if ($all_found == 0); |
my $leader = marc_leader(); |
407 |
|
|
408 |
# repeatable index |
=cut |
|
my $r = $i; |
|
|
$r = 0 if (lc("$2") eq 's'); |
|
409 |
|
|
410 |
my $found = 0; |
sub marc_leader { |
411 |
my $tmp = $self->get_data(\$rec,$3,$4,$r,\$found); |
my ($offset,$value) = @_; |
412 |
|
|
413 |
if ($found) { |
if ($offset) { |
414 |
push @out, $del; |
$out->{' leader'}->{ $offset } = $value; |
415 |
push @out, $tmp; |
} else { |
416 |
$all_found += $found; |
return $out->{' leader'}; |
|
} |
|
417 |
} |
} |
418 |
|
} |
419 |
|
|
420 |
return if (! $all_found); |
=head2 marc |
421 |
|
|
422 |
my $out = join('',@out); |
Save value for MARC field |
423 |
|
|
424 |
if ($out) { |
marc('900','a', rec('200','a') ); |
425 |
# add rest of format (suffix) |
marc('001', rec('000') ); |
|
$out .= $format; |
|
426 |
|
|
427 |
# add prefix if not there |
=cut |
|
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
|
428 |
|
|
429 |
$log->debug("result: $out"); |
sub marc { |
430 |
} |
my $f = shift or die "marc needs field"; |
431 |
|
die "marc field must be numer" unless ($f =~ /^\d+$/); |
432 |
|
|
433 |
if ($eval_code) { |
my $sf; |
434 |
my $eval = $self->fill_in($rec,$eval_code,$i) || return; |
if ($f >= 10) { |
435 |
$log->debug("about to eval{$eval} format: $out"); |
$sf = shift or die "marc needs subfield"; |
|
return if (! $self->_eval($eval)); |
|
436 |
} |
} |
437 |
|
|
438 |
if ($filter_name) { |
foreach (@_) { |
439 |
my @filter_args; |
my $v = $_; # make var read-write for Encode |
440 |
if ($filter_name =~ s/(\w+)\((.*)\)/$1/) { |
next unless (defined($v) && $v !~ /^\s*$/); |
441 |
@filter_args = split(/,/, $2); |
from_to($v, 'iso-8859-2', $marc_encoding) if ($marc_encoding); |
442 |
} |
my ($i1,$i2) = defined($marc_indicators->{$f}) ? @{ $marc_indicators->{$f} } : (' ',' '); |
443 |
if ($self->{'filter'}->{$filter_name}) { |
if (defined $sf) { |
444 |
$log->debug("about to filter{$filter_name} format: $out with arguments: ", join(",", @filter_args)); |
push @{ $marc_record->[ $marc_record_offset ] }, [ $f, $i1, $i2, $sf => $v ]; |
445 |
unshift @filter_args, $out; |
} else { |
446 |
$out = $self->{'filter'}->{$filter_name}->(@filter_args); |
push @{ $marc_record->[ $marc_record_offset ] }, [ $f, $v ]; |
|
return unless(defined($out)); |
|
|
$log->debug("filter result: $out"); |
|
|
} elsif (! $warn_once->{$filter_name}) { |
|
|
$log->warn("trying to use undefined filter $filter_name"); |
|
|
$warn_once->{$filter_name}++; |
|
447 |
} |
} |
448 |
} |
} |
|
|
|
|
return $out; |
|
449 |
} |
} |
450 |
|
|
451 |
=head2 parse_to_arr |
=head2 marc_repeatable_subfield |
452 |
|
|
453 |
Similar to C<parse>, but returns array of all repeatable fields |
Save values for MARC repetable subfield |
454 |
|
|
455 |
my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
marc_repeatable_subfield('910', 'z', rec('909') ); |
456 |
|
|
457 |
=cut |
=cut |
458 |
|
|
459 |
sub parse_to_arr { |
sub marc_repeatable_subfield { |
460 |
my $self = shift; |
my ($f,$sf) = @_; |
461 |
|
die "marc_repeatable_subfield need field and subfield!\n" unless ($f && $sf); |
462 |
|
$marc_repeatable_subfield->{ $f . $sf }++; |
463 |
|
marc(@_); |
464 |
|
} |
465 |
|
|
466 |
my ($rec, $format_utf8) = @_; |
=head2 marc_indicators |
467 |
|
|
468 |
my $log = $self->_get_logger(); |
Set both indicators for MARC field |
469 |
|
|
470 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
marc_indicators('900', ' ', 1); |
|
return if (! $format_utf8); |
|
471 |
|
|
472 |
my $i = 0; |
Any indicator value other than C<0-9> will be treated as undefined. |
|
my @arr; |
|
473 |
|
|
474 |
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
=cut |
|
push @arr, $v; |
|
|
} |
|
475 |
|
|
476 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
sub marc_indicators { |
477 |
|
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 |
return @arr; |
$i1 = ' ' if ($i1 !~ /^\d$/); |
483 |
|
$i2 = ' ' if ($i2 !~ /^\d$/); |
484 |
|
@{ $marc_indicators->{$f} } = ($i1,$i2); |
485 |
} |
} |
486 |
|
|
487 |
|
=head2 marc_compose |
488 |
|
|
489 |
=head2 fill_in |
Save values for each MARC subfield explicitly |
|
|
|
|
Workhourse of all: takes record from in-memory structure of database and |
|
|
strings with placeholders and returns string or array of with substituted |
|
|
values from record. |
|
490 |
|
|
491 |
my $text = $webpac->fill_in($rec,'v250^a'); |
marc_compose('900', |
492 |
|
'a', rec('200','a') |
493 |
|
'b', rec('201','a') |
494 |
|
'a', rec('200','b') |
495 |
|
'c', rec('200','c') |
496 |
|
); |
497 |
|
|
498 |
Optional argument is ordinal number for repeatable fields. By default, |
=cut |
|
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. |
|
499 |
|
|
500 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
sub marc_compose { |
501 |
|
my $f = shift or die "marc_compose needs field"; |
502 |
|
die "marc_compose field must be numer" unless ($f =~ /^\d+$/); |
503 |
|
|
504 |
This function B<does not> perform parsing of format to inteligenty skip |
my ($i1,$i2) = defined($marc_indicators->{$f}) ? @{ $marc_indicators->{$f} } : (' ',' '); |
505 |
delimiters before fields which aren't used. |
my $m = [ $f, $i1, $i2 ]; |
506 |
|
|
507 |
This method will automatically decode UTF-8 string to local code page |
warn "### marc_compose input subfields = ", dump(@_),$/ if ($debug > 2); |
|
if needed. |
|
508 |
|
|
509 |
=cut |
while (@_) { |
510 |
|
my $sf = shift or die "marc_compose $f needs subfield"; |
511 |
|
my $v = shift; |
512 |
|
|
513 |
sub fill_in { |
next unless (defined($v) && $v !~ /^\s*$/); |
514 |
my $self = shift; |
from_to($v, 'iso-8859-2', $marc_encoding) if ($marc_encoding); |
515 |
|
push @$m, ( $sf, $v ); |
516 |
|
warn "## ++ marc_compose($f,$sf,$v) ", dump( $m ),$/ if ($debug > 1); |
517 |
|
} |
518 |
|
|
519 |
my $log = $self->_get_logger(); |
warn "## marc_compose current marc = ", dump( $m ),$/ if ($debug > 1); |
520 |
|
|
521 |
my $rec = shift || $log->logconfess("need data record"); |
push @{ $marc_record->[ $marc_record_offset ] }, $m if ($#{$m} > 2); |
522 |
my $format = shift || $log->logconfess("need format to parse"); |
} |
|
# iteration (for repeatable fields) |
|
|
my $i = shift || 0; |
|
523 |
|
|
524 |
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
=head2 marc_duplicate |
525 |
|
|
526 |
# FIXME remove for speedup? |
Generate copy of current MARC record and continue working on copy |
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
|
527 |
|
|
528 |
if (utf8::is_utf8($format)) { |
marc_duplicate(); |
|
$format = $self->_x($format); |
|
|
} |
|
529 |
|
|
530 |
my $found = 0; |
Copies can be accessed using C<< _get_marc_fields( fetch_next => 1 ) >> or |
531 |
|
C<< _get_marc_fields( offset => 42 ) >>. |
532 |
|
|
533 |
my $eval_code; |
=cut |
|
# remove eval{...} from beginning |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
|
534 |
|
|
535 |
my $filter_name; |
sub marc_duplicate { |
536 |
# remove filter{...} from beginning |
my $m = $marc_record->[ -1 ]; |
537 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
die "can't duplicate record which isn't defined" unless ($m); |
538 |
|
push @{ $marc_record }, dclone( $m ); |
539 |
|
warn "## marc_duplicate = ", dump(@$marc_record), $/ if ($debug > 1); |
540 |
|
$marc_record_offset = $#{ $marc_record }; |
541 |
|
warn "## marc_record_offset = $marc_record_offset", $/ if ($debug > 1); |
542 |
|
} |
543 |
|
|
544 |
# do actual replacement of placeholders |
=head2 marc_remove |
|
# repeatable fields |
|
|
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
|
|
# non-repeatable fields |
|
|
$format =~ s/s(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,0,\$found)/ges; |
|
545 |
|
|
546 |
if ($found) { |
Remove some field or subfield from MARC record. |
|
$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; |
|
|
} |
|
|
} |
|
547 |
|
|
548 |
|
marc_remove('200'); |
549 |
|
marc_remove('200','a'); |
550 |
|
|
551 |
=head2 fill_in_to_arr |
This will erase field C<200> or C<200^a> from current MARC record. |
552 |
|
|
553 |
Similar to C<fill_in>, but returns array of all repeatable fields. Usable |
This is useful after calling C<marc_duplicate> or on it's own (but, you |
554 |
for fields which have lookups, so they shouldn't be parsed but rather |
should probably just remove that subfield definition if you are not |
555 |
C<fill_id>ed. |
using C<marc_duplicate>). |
556 |
|
|
557 |
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]'); |
FIXME: support fields < 10. |
558 |
|
|
559 |
=cut |
=cut |
560 |
|
|
561 |
sub fill_in_to_arr { |
sub marc_remove { |
562 |
my $self = shift; |
my ($f, $sf) = @_; |
563 |
|
|
564 |
my ($rec, $format_utf8) = @_; |
die "marc_remove needs record number" unless defined($f); |
565 |
|
|
566 |
my $log = $self->_get_logger(); |
my $marc = $marc_record->[ $marc_record_offset ]; |
567 |
|
|
568 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
warn "### marc_remove before = ", dump( $marc ), $/ if ($debug > 2); |
|
return if (! $format_utf8); |
|
569 |
|
|
570 |
my $i = 0; |
my $i = 0; |
571 |
my @arr; |
foreach ( 0 .. $#{ $marc } ) { |
572 |
|
last unless (defined $marc->[$i]); |
573 |
while (my @v = $self->fill_in($rec,$format_utf8,$i++)) { |
warn "#### working on ",dump( @{ $marc->[$i] }), $/ if ($debug > 3); |
574 |
push @arr, @v; |
if ($marc->[$i]->[0] eq $f) { |
575 |
|
if (! defined $sf) { |
576 |
|
# remove whole field |
577 |
|
splice @$marc, $i, 1; |
578 |
|
warn "#### slice \@\$marc, $i, 1 = ",dump( @{ $marc }), $/ if ($debug > 3); |
579 |
|
$i--; |
580 |
|
} else { |
581 |
|
foreach my $j ( 0 .. (( $#{ $marc->[$i] } - 3 ) / 2) ) { |
582 |
|
my $o = ($j * 2) + 3; |
583 |
|
if ($marc->[$i]->[$o] eq $sf) { |
584 |
|
# remove subfield |
585 |
|
splice @{$marc->[$i]}, $o, 2; |
586 |
|
warn "#### slice \@{\$marc->[$i]}, $o, 2 = ", dump( @{ $marc }), $/ if ($debug > 3); |
587 |
|
# is record now empty? |
588 |
|
if ($#{ $marc->[$i] } == 2) { |
589 |
|
splice @$marc, $i, 1; |
590 |
|
warn "#### slice \@\$marc, $i, 1 = ", dump( @{ $marc }), $/ if ($debug > 3); |
591 |
|
$i--; |
592 |
|
}; |
593 |
|
} |
594 |
|
} |
595 |
|
} |
596 |
|
} |
597 |
|
$i++; |
598 |
} |
} |
599 |
|
|
600 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
warn "### marc_remove($f", $sf ? ",$sf" : "", ") after = ", dump( $marc ), $/ if ($debug > 2); |
601 |
|
|
602 |
return @arr; |
$marc_record->[ $marc_record_offset ] = $marc; |
|
} |
|
603 |
|
|
604 |
|
warn "## full marc_record = ", dump( @{ $marc_record }), $/ if ($debug > 1); |
605 |
|
} |
606 |
|
|
607 |
=head2 get_data |
=head1 Functions to extract data from input |
608 |
|
|
609 |
Returns value from record. |
This function should be used inside functions to create C<data_structure> described |
610 |
|
above. |
611 |
|
|
612 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
=head2 rec1 |
613 |
|
|
614 |
Arguments are: |
Return all values in some field |
|
record reference C<$rec>, |
|
|
field C<$f>, |
|
|
optional subfiled C<$sf>, |
|
|
index for repeatable values C<$i>. |
|
615 |
|
|
616 |
Optinal variable C<$found> will be incremeted if there |
@v = rec1('200') |
|
is field. |
|
617 |
|
|
618 |
Returns value or empty string. |
TODO: order of values is probably same as in source data, need to investigate that |
619 |
|
|
620 |
=cut |
=cut |
621 |
|
|
622 |
sub get_data { |
sub rec1 { |
623 |
my $self = shift; |
my $f = shift; |
624 |
|
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
625 |
my ($rec,$f,$sf,$i,$found) = @_; |
return unless (defined($rec) && defined($rec->{$f})); |
626 |
|
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
627 |
if ($$rec->{$f}) { |
if (ref($rec->{$f}) eq 'ARRAY') { |
628 |
return '' if (! $$rec->{$f}->[$i]); |
return map { |
629 |
no strict 'refs'; |
if (ref($_) eq 'HASH') { |
630 |
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
values %{$_}; |
|
$$found++ if (defined($$found)); |
|
|
return $$rec->{$f}->[$i]->{$sf}; |
|
|
} elsif (! $sf && $$rec->{$f}->[$i]) { |
|
|
$$found++ if (defined($$found)); |
|
|
# it still might have subfield, just |
|
|
# not specified, so we'll dump all |
|
|
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
|
|
my $out; |
|
|
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
|
|
$out .= $$rec->{$f}->[$i]->{$k}." "; |
|
|
} |
|
|
return $out; |
|
631 |
} else { |
} else { |
632 |
return $$rec->{$f}->[$i]; |
$_; |
633 |
} |
} |
634 |
} else { |
} @{ $rec->{$f} }; |
635 |
return ''; |
} elsif( defined($rec->{$f}) ) { |
636 |
} |
return $rec->{$f}; |
|
} else { |
|
|
return ''; |
|
637 |
} |
} |
638 |
} |
} |
639 |
|
|
640 |
|
=head2 rec2 |
641 |
|
|
642 |
=head2 apply_format |
Return all values in specific field and subfield |
643 |
|
|
644 |
Apply format specified in tag with C<format_name="name"> and |
@v = rec2('200','a') |
|
C<format_delimiter=";;">. |
|
645 |
|
|
646 |
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
=cut |
647 |
|
|
648 |
Formats can contain C<lookup{...}> if you need them. |
sub rec2 { |
649 |
|
my $f = shift; |
650 |
|
return unless (defined($rec && $rec->{$f})); |
651 |
|
my $sf = shift; |
652 |
|
return map { |
653 |
|
if (ref($_->{$sf}) eq 'ARRAY') { |
654 |
|
@{ $_->{$sf} }; |
655 |
|
} else { |
656 |
|
$_->{$sf}; |
657 |
|
} |
658 |
|
} grep { ref($_) eq 'HASH' && $_->{$sf} } @{ $rec->{$f} }; |
659 |
|
} |
660 |
|
|
661 |
=cut |
=head2 rec |
662 |
|
|
663 |
sub apply_format { |
syntaxtic sugar for |
|
my $self = shift; |
|
664 |
|
|
665 |
my ($name,$delimiter,$data) = @_; |
@v = rec('200') |
666 |
|
@v = rec('200','a') |
667 |
|
|
668 |
my $log = $self->_get_logger(); |
=cut |
669 |
|
|
670 |
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
sub rec { |
671 |
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
my @out; |
672 |
return $data; |
if ($#_ == 0) { |
673 |
|
@out = rec1(@_); |
674 |
|
} elsif ($#_ == 1) { |
675 |
|
@out = rec2(@_); |
676 |
|
} |
677 |
|
if (@out) { |
678 |
|
return @out; |
679 |
|
} else { |
680 |
|
return ''; |
681 |
} |
} |
682 |
|
} |
683 |
|
|
684 |
$log->warn("no delimiter for format $name") if (! $delimiter); |
=head2 regex |
685 |
|
|
686 |
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
Apply regex to some or all values |
687 |
|
|
688 |
my @data = split(/\Q$delimiter\E/, $data); |
@v = regex( 's/foo/bar/g', @v ); |
689 |
|
|
690 |
my $out = sprintf($format, @data); |
=cut |
|
$log->debug("using format $name [$format] on $data to produce: $out"); |
|
691 |
|
|
692 |
if ($self->{'lookup_regex'} && $out =~ $self->{'lookup_regex'}) { |
sub regex { |
693 |
return $self->{'lookup'}->lookup($out); |
my $r = shift; |
694 |
} else { |
my @out; |
695 |
return $out; |
#warn "r: $r\n", dump(\@_); |
696 |
|
foreach my $t (@_) { |
697 |
|
next unless ($t); |
698 |
|
eval "\$t =~ $r"; |
699 |
|
push @out, $t if ($t && $t ne ''); |
700 |
} |
} |
701 |
|
return @out; |
702 |
} |
} |
703 |
|
|
704 |
=head2 sort_arr |
=head2 prefix |
705 |
|
|
706 |
Sort array ignoring case and html in data |
Prefix all values with a string |
707 |
|
|
708 |
my @sorted = $webpac->sort_arr(@unsorted); |
@v = prefix( 'my_', @v ); |
709 |
|
|
710 |
=cut |
=cut |
711 |
|
|
712 |
sub sort_arr { |
sub prefix { |
713 |
my $self = shift; |
my $p = shift or return; |
714 |
|
return map { $p . $_ } grep { defined($_) } @_; |
715 |
|
} |
716 |
|
|
717 |
my $log = $self->_get_logger(); |
=head2 suffix |
718 |
|
|
719 |
# FIXME add Schwartzian Transformation? |
suffix all values with a string |
720 |
|
|
721 |
my @sorted = sort { |
@v = suffix( '_my', @v ); |
|
$a =~ s#<[^>]+/*>##; |
|
|
$b =~ s#<[^>]+/*>##; |
|
|
lc($b) cmp lc($a) |
|
|
} @_; |
|
|
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
|
722 |
|
|
723 |
return @sorted; |
=cut |
|
} |
|
724 |
|
|
725 |
|
sub suffix { |
726 |
|
my $s = shift or die "suffix needs string as first argument"; |
727 |
|
return map { $_ . $s } grep { defined($_) } @_; |
728 |
|
} |
729 |
|
|
730 |
=head1 INTERNAL METHODS |
=head2 surround |
731 |
|
|
732 |
=head2 _sort_by_order |
surround all values with a two strings |
733 |
|
|
734 |
Sort xml tags data structure accoding to C<order=""> attribute. |
@v = surround( 'prefix_', '_suffix', @v ); |
735 |
|
|
736 |
=cut |
=cut |
737 |
|
|
738 |
sub _sort_by_order { |
sub surround { |
739 |
my $self = shift; |
my $p = shift or die "surround need prefix as first argument"; |
740 |
|
my $s = shift or die "surround needs suffix as second argument"; |
741 |
|
return map { $p . $_ . $s } grep { defined($_) } @_; |
742 |
|
} |
743 |
|
|
744 |
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
=head2 first |
|
$self->{'import_xml'}->{'indexer'}->{$a}; |
|
|
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
|
|
$self->{'import_xml'}->{'indexer'}->{$b}; |
|
745 |
|
|
746 |
return $va <=> $vb; |
Return first element |
|
} |
|
747 |
|
|
748 |
=head2 _x |
$v = first( @v ); |
749 |
|
|
750 |
Convert strings from C<conf/normalize/*.xml> encoding into application |
=cut |
|
specific encoding (optinally specified using C<code_page> to C<new> |
|
|
constructor). |
|
751 |
|
|
752 |
my $text = $n->_x('normalize text string'); |
sub first { |
753 |
|
my $r = shift; |
754 |
|
return $r; |
755 |
|
} |
756 |
|
|
757 |
This is a stub so that other modules doesn't have to implement it. |
=head2 lookup |
758 |
|
|
759 |
|
Consult lookup hashes for some value |
760 |
|
|
761 |
|
@v = lookup( $v ); |
762 |
|
@v = lookup( @v ); |
763 |
|
|
764 |
=cut |
=cut |
765 |
|
|
766 |
sub _x { |
sub lookup { |
767 |
my $self = shift; |
my $k = shift or return; |
768 |
return shift; |
return unless (defined($lookup->{$k})); |
769 |
|
if (ref($lookup->{$k}) eq 'ARRAY') { |
770 |
|
return @{ $lookup->{$k} }; |
771 |
|
} else { |
772 |
|
return $lookup->{$k}; |
773 |
|
} |
774 |
} |
} |
775 |
|
|
776 |
|
=head2 join_with |
777 |
|
|
778 |
|
Joins walues with some delimiter |
779 |
|
|
780 |
|
$v = join_with(", ", @v); |
781 |
|
|
782 |
|
=cut |
783 |
|
|
784 |
|
sub join_with { |
785 |
|
my $d = shift; |
786 |
|
warn "### join_with('$d',",dump(@_),")\n" if ($debug > 2); |
787 |
|
my $v = join($d, grep { defined($_) && $_ ne '' } @_); |
788 |
|
return '' unless defined($v); |
789 |
|
return $v; |
790 |
|
} |
791 |
|
|
792 |
=head1 AUTHOR |
=head2 split_rec_on |
793 |
|
|
794 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
Split record subfield on some regex and take one of parts out |
795 |
|
|
796 |
=head1 COPYRIGHT & LICENSE |
$a_before_semi_column = |
797 |
|
split_rec_on('200','a', /\s*;\s*/, $part); |
798 |
|
|
799 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
C<$part> is optional number of element. First element is |
800 |
|
B<1>, not 0! |
801 |
|
|
802 |
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 |
803 |
under the same terms as Perl itself. |
return all values produced by splitting. |
804 |
|
|
805 |
=cut |
=cut |
806 |
|
|
807 |
1; # End of WebPAC::Normalize |
sub split_rec_on { |
808 |
|
die "split_rec_on need (fld,sf,regex[,part]" if ($#_ < 2); |
809 |
|
|
810 |
|
my ($fld, $sf, $regex, $part) = @_; |
811 |
|
warn "### regex ", ref($regex), $regex, $/ if ($debug > 2); |
812 |
|
|
813 |
|
my @r = rec( $fld, $sf ); |
814 |
|
my $v = shift @r; |
815 |
|
warn "### first rec($fld,$sf) = ",dump($v),$/ if ($debug > 2); |
816 |
|
|
817 |
|
return '' if( ! defined($v) || $v =~ /^\s*$/); |
818 |
|
|
819 |
|
my @s = split( $regex, $v ); |
820 |
|
warn "## split_rec_on($fld,$sf,$regex,$part) = ",dump(@s),$/ if ($debug > 1); |
821 |
|
if ($part && $part > 0) { |
822 |
|
return $s[ $part - 1 ]; |
823 |
|
} else { |
824 |
|
return @s; |
825 |
|
} |
826 |
|
} |
827 |
|
|
828 |
|
# END |
829 |
|
1; |