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package WebPAC::Normalize; |
package WebPAC::Normalize; |
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use Exporter 'import'; |
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our @EXPORT = qw/ |
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_set_ds _set_lookup |
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_set_load_row |
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_get_ds _clean_ds |
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_debug |
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_pack_subfields_hash |
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to |
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search_display search display sorted |
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rec1 rec2 rec |
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frec frec_eq frec_ne |
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regex prefix suffix surround |
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first lookup join_with |
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save_into_lookup |
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split_rec_on |
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get set |
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count |
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row |
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rec_array |
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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; |
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=head1 NAME |
#use base qw/WebPAC::Common/; |
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use Data::Dump qw/dump/; |
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use Carp qw/confess/; |
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# debugging warn(s) |
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my $debug = 0; |
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_debug( $debug ); |
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# FIXME |
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use WebPAC::Normalize::ISBN; |
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push @EXPORT, ( 'isbn_10', 'isbn_13' ); |
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use WebPAC::Normalize::MARC; |
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push @EXPORT, ( qw/ |
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marc marc_indicators marc_repeatable_subfield |
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marc_compose marc_leader marc_fixed |
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marc_duplicate marc_remove marc_count |
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marc_original_order |
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marc_template |
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/); |
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WebPAC::Normalize - data mungling for normalisation |
use Storable qw/dclone/; |
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=head1 VERSION |
=head1 NAME |
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Version 0.04 |
WebPAC::Normalize - describe normalisaton rules using sets |
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=cut |
=cut |
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our $VERSION = '0.04'; |
our $VERSION = '0.36'; |
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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<search_display>, 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_hash, |
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row => $row, |
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rules => $normalize_pl_config, |
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marc_encoding => 'utf-8', |
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config => $config, |
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load_row_coderef => sub { |
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my ($database,$input,$mfn) = @_; |
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$store->load_row( database => $database, input => $input, id => $mfn ); |
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}, |
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); |
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source data records (C<$rec>) have unique identifiers in field C<000> |
Options C<row>, C<rules> and C<log> are mandatory while all |
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other are optional. |
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=item * |
C<load_row_coderef> is closure only used when executing lookups, so they will |
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die if it's not defined. |
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optional C<eval{length('v123^a') == 3}> tag at B<beginning of format> will be |
This function will B<die> if normalizastion can't be evaled. |
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perl code that is evaluated before producing output (value of field will be |
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interpolated before that) |
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=item * |
Since this function isn't exported you have to call it with |
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C<WebPAC::Normalize::data_structure>. |
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optional C<filter{filter_name}> at B<begining of format> will apply perl |
=cut |
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code defined as code ref on format after field substitution to producing |
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output |
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=item * |
my $load_row_coderef; |
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optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
sub data_structure { |
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my $arg = {@_}; |
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=item * |
die "need row argument" unless ($arg->{row}); |
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die "need normalisation argument" unless ($arg->{rules}); |
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at end, optional C<format>s rules are resolved. Format rules are similar to |
_set_lookup( $arg->{lookup} ) if defined($arg->{lookup}); |
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C<sprintf> and can also contain C<lookup{...}> which is performed after |
_set_ds( $arg->{row} ); |
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values are inserted in format. |
_set_config( $arg->{config} ) if defined($arg->{config}); |
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_clean_ds( %{ $arg } ); |
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$load_row_coderef = $arg->{load_row_coderef}; |
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=back |
no strict 'subs'; |
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no warnings 'redefine'; |
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eval "$arg->{rules};"; |
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die "error evaling $arg->{rules}: $@\n" if ($@); |
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This also describes order in which transformations are applied (eval, |
return _get_ds(); |
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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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=head2 _set_ds |
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Set current record hash |
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_set_ds( $rec ); |
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=head1 FUNCTIONS |
=cut |
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=head2 new |
my $rec; |
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Create new normalisation object |
sub _set_ds { |
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$rec = shift or die "no record hash"; |
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$WebPAC::Normalize::MARC::rec = $rec; |
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} |
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my $n = new WebPAC::Normalize::Something( |
=head2 |
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filter => { |
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'filter_name_1' => sub { |
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# filter code |
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return length($_); |
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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 |
my $rec = _get_rec(); |
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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 |
=cut |
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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 |
sub _get_rec { $rec }; |
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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 |
sub rec_array { |
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my $d = $rec->{ $_[0] }; |
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return @$d if ref($d) eq 'ARRAY'; |
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die "field $_[0] not array: ",dump( $d ); |
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} |
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sub new { |
=head2 _set_config |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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my $r = $self->{'lookup_regex'} ? 1 : 0; |
Set current config hash |
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my $l = $self->{'lookup'} ? 1 : 0; |
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my $log = $self->_get_logger(); |
_set_config( $config ); |
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# those two must be in pair |
Magic keys are: |
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if ( ($r & $l) != ($r || $l) ) { |
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my $log = $self->_get_logger(); |
=over 4 |
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$log->logdie("lookup_regex and lookup must be in pair"); |
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} |
=item _ |
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Code of current database |
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=item _mfn |
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Current MFN |
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$log->logdie("lookup must be WebPAC::Lookup object") if ($self->{'lookup'} && ! $self->{'lookup'}->isa('WebPAC::Lookup')); |
=back |
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$log->warn("no prefix defined. please check that!") unless ($self->{'prefix'}); |
=cut |
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$log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l); |
my $config; |
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$self ? return $self : return undef; |
sub _set_config { |
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$config = shift; |
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} |
} |
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=head2 _get_ds |
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=head2 data_structure |
Return hash formatted as data structure |
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my $ds = _get_ds(); |
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=cut |
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my $out; |
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Create in-memory data structure which represents normalized layout from |
sub _get_ds { |
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C<conf/normalize/*.xml>. |
#warn "## out = ",dump($out); |
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return $out; |
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} |
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This structures are used to produce output. |
=head2 _clean_ds |
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my $ds = $webpac->data_structure($rec); |
Clean data structure hash for next record |
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_clean_ds(); |
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=cut |
=cut |
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sub data_structure { |
sub _clean_ds { |
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my $self = shift; |
my $a = {@_}; |
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$out = undef; |
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WebPAC::Normalize::MARC::_clean(); |
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} |
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my $log = $self->_get_logger(); |
=head2 _set_lookup |
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my $rec = shift; |
Set current lookup hash |
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$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
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$log->debug("data_structure rec = ", sub { Dumper($rec) }); |
_set_lookup( $lookup ); |
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$log->logdie("need unique ID (mfn) in field 000 of record ", sub { Dumper($rec) } ) unless (defined($rec->{'000'})); |
=cut |
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my $id = $rec->{'000'}->[0] || $log->logdie("field 000 isn't array!"); |
my $lookup; |
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my $cache_file; |
sub _set_lookup { |
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$lookup = shift; |
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} |
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if ($self->{'db'}) { |
=head2 _get_lookup |
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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'}; |
Get current lookup hash |
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undef $self->{'headline'}; |
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my @sorted_tags; |
my $lookup = _get_lookup(); |
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if ($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 $ds; |
=cut |
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$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
sub _get_lookup { |
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return $lookup; |
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} |
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foreach my $field (@sorted_tags) { |
=head2 _set_load_row |
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my $row; |
Setup code reference which will return L<data_structure> from |
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L<WebPAC::Store> |
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#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
_set_load_row(sub { |
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my ($database,$input,$mfn) = @_; |
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$store->load_row( database => $database, input => $input, id => $mfn ); |
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}); |
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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 _set_load_row { |
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$format = $tag->{'value'} || $tag->{'content'}; |
my $coderef = shift; |
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confess "argument isn't CODE" unless ref($coderef) eq 'CODE'; |
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$log->debug("format: $format"); |
$load_row_coderef = $coderef; |
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} |
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my @v; |
=head2 _debug |
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if ($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'}) { |
Change level of debug warnings |
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@v = $self->sort_arr(@v); |
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} |
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# use format? |
_debug( 2 ); |
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if ($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 |
=cut |
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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 |
sub _debug { |
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my @types = qw(display search); |
my $l = shift; |
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# override by type attribute |
return $debug unless defined($l); |
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@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
warn "debug level $l",$/ if ($l > 0); |
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$debug = $l; |
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foreach my $type (@types) { |
$WebPAC::Normalize::MARC::debug = $debug; |
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# append to previous line? |
} |
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$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}}, $last; |
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} else { |
=head1 Functions to create C<data_structure> |
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push @{$row->{$type}}, @v; |
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} |
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} |
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Those functions generally have to first in your normalization file. |
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} |
=head2 to |
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if ($row) { |
Generic way to set values for some name |
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$row->{'tag'} = $field; |
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# TODO: name_sigular, name_plural |
to('field-name', 'name-value' => rec('200','a') ); |
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my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
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my $row_name = $name ? $self->_x($name) : $field; |
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# post-sort all values in field |
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if ($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} = $row; |
There are many helpers defined below which might be easier to use. |
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$log->debug("row $field: ",sub { Dumper($row) }); |
=cut |
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} |
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} |
sub to { |
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my $type = shift or confess "need type -- BUG?"; |
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my $name = shift or confess "needs name as first argument"; |
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my @o = grep { defined($_) && $_ ne '' } @_; |
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return unless (@o); |
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$out->{$name}->{$type} = \@o; |
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} |
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$self->{'db'}->save_ds( |
=head2 search_display |
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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) }); |
Define output for L<search> and L<display> at the same time |
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$log->logconfess("data structure returned is not array any more!") if wantarray; |
search_display('Title', rec('200','a') ); |
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return $ds; |
=cut |
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sub search_display { |
311 |
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my $name = shift or die "search_display needs name as first argument"; |
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my @o = grep { defined($_) && $_ ne '' } @_; |
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return unless (@o); |
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$out->{$name}->{search} = \@o; |
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$out->{$name}->{display} = \@o; |
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} |
} |
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=head2 parse |
=head2 tag |
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Perform smart parsing of string, skipping delimiters for fields which aren't |
Old name for L<search_display>, it will probably be removed at one point. |
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defined. It can also eval code in format starting with C<eval{...}> and |
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return output or nothing depending on eval code. |
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my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
=cut |
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sub tag { |
325 |
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search_display( @_ ); |
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} |
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=head2 display |
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Define output just for I<display> |
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@v = display('Title', rec('200','a') ); |
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=cut |
=cut |
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sub parse { |
sub display { to( 'display', @_ ) } |
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my $self = shift; |
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338 |
my ($rec, $format_utf8, $i) = @_; |
=head2 search |
339 |
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340 |
return if (! $format_utf8); |
Prepare values just for I<search> |
341 |
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my $log = $self->_get_logger(); |
@v = search('Title', rec('200','a') ); |
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344 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
=cut |
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$i = 0 if (! $i); |
sub search { to( 'search', @_ ) } |
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348 |
my $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
=head2 sorted |
349 |
|
|
350 |
my @out; |
Insert into lists which will be automatically sorted |
351 |
|
|
352 |
|
sorted('Title', rec('200','a') ); |
353 |
|
|
354 |
$log->debug("format: $format"); |
=cut |
355 |
|
|
356 |
my $eval_code; |
sub sorted { to( 'sorted', @_ ) } |
|
# remove eval{...} from beginning |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
|
357 |
|
|
358 |
my $filter_name; |
=head2 row |
|
# remove filter{...} from beginning |
|
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
|
359 |
|
|
360 |
my $prefix; |
Insert new row of data into output module |
|
my $all_found=0; |
|
361 |
|
|
362 |
while ($format =~ s/^(.*?)(v|s)(\d+)(?:\^(\w))?//s) { |
row( column => 'foo', column2 => 'bar' ); |
363 |
|
|
364 |
|
=cut |
365 |
|
|
366 |
|
use Data::Dump qw/dump/; |
367 |
|
|
368 |
|
sub row { |
369 |
|
die "array doesn't have even number of elements but $#_: ",dump( @_ ) if $#_ % 2 != 1; |
370 |
|
|
371 |
|
push @{ $out->{'_rows'} }, {@_}; |
372 |
|
} |
373 |
|
|
|
my $del = $1 || ''; |
|
|
$prefix ||= $del if ($all_found == 0); |
|
374 |
|
|
375 |
# repeatable index |
=head1 Functions to extract data from input |
|
my $r = $i; |
|
|
$r = 0 if (lc("$2") eq 's'); |
|
376 |
|
|
377 |
my $found = 0; |
This function should be used inside functions to create C<data_structure> described |
378 |
my $tmp = $self->get_data(\$rec,$3,$4,$r,\$found); |
above. |
379 |
|
|
380 |
if ($found) { |
=head2 _pack_subfields_hash |
381 |
push @out, $del; |
|
382 |
push @out, $tmp; |
@subfields = _pack_subfields_hash( $h ); |
383 |
$all_found += $found; |
$subfields = _pack_subfields_hash( $h, 1 ); |
384 |
|
|
385 |
|
Return each subfield value in array or pack them all together and return scalar |
386 |
|
with subfields (denoted by C<^>) and values. |
387 |
|
|
388 |
|
=cut |
389 |
|
|
390 |
|
sub _pack_subfields_hash { |
391 |
|
|
392 |
|
warn "## _pack_subfields_hash( ",dump(@_), " )\n" if ($debug > 1); |
393 |
|
|
394 |
|
my ($hash,$include_subfields) = @_; |
395 |
|
|
396 |
|
# sanity and ease of use |
397 |
|
return $hash if (ref($hash) ne 'HASH'); |
398 |
|
|
399 |
|
my $h = dclone( $hash ); |
400 |
|
|
401 |
|
if ( defined($h->{subfields}) ) { |
402 |
|
my $sfs = delete $h->{subfields} || die "no subfields?"; |
403 |
|
my @out; |
404 |
|
while (@$sfs) { |
405 |
|
my $sf = shift @$sfs; |
406 |
|
push @out, '^' . $sf if ($include_subfields); |
407 |
|
my $o = shift @$sfs; |
408 |
|
if ($o == 0 && ref( $h->{$sf} ) ne 'ARRAY' ) { |
409 |
|
# single element subfields are not arrays |
410 |
|
#warn "====> $sf $o / $#$sfs ", dump( $sfs, $h->{$sf} ), "\n"; |
411 |
|
|
412 |
|
push @out, $h->{$sf}; |
413 |
|
} else { |
414 |
|
#warn "====> $sf $o / $#$sfs ", dump( $sfs, $h->{$sf} ), "\n"; |
415 |
|
push @out, $h->{$sf}->[$o]; |
416 |
|
} |
417 |
|
} |
418 |
|
if ($include_subfields) { |
419 |
|
return join('', @out); |
420 |
|
} else { |
421 |
|
return @out; |
422 |
|
} |
423 |
|
} else { |
424 |
|
if ($include_subfields) { |
425 |
|
my $out = ''; |
426 |
|
foreach my $sf (sort keys %$h) { |
427 |
|
if (ref($h->{$sf}) eq 'ARRAY') { |
428 |
|
$out .= '^' . $sf . join('^' . $sf, @{ $h->{$sf} }); |
429 |
|
} else { |
430 |
|
$out .= '^' . $sf . $h->{$sf}; |
431 |
|
} |
432 |
|
} |
433 |
|
return $out; |
434 |
|
} else { |
435 |
|
# FIXME this should probably be in alphabetical order instead of hash order |
436 |
|
values %{$h}; |
437 |
} |
} |
438 |
} |
} |
439 |
|
} |
440 |
|
|
441 |
return if (! $all_found); |
=head2 rec1 |
442 |
|
|
443 |
my $out = join('',@out); |
Return all values in some field |
444 |
|
|
445 |
if ($out) { |
@v = rec1('200') |
|
# add rest of format (suffix) |
|
|
$out .= $format; |
|
446 |
|
|
447 |
# add prefix if not there |
TODO: order of values is probably same as in source data, need to investigate that |
|
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
|
448 |
|
|
449 |
$log->debug("result: $out"); |
=cut |
|
} |
|
450 |
|
|
451 |
if ($eval_code) { |
sub rec1 { |
452 |
my $eval = $self->fill_in($rec,$eval_code,$i) || return; |
my $f = shift; |
453 |
$log->debug("about to eval{$eval} format: $out"); |
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
454 |
return if (! $self->_eval($eval)); |
return unless (defined($rec) && defined($rec->{$f})); |
455 |
} |
warn "rec1($f) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
456 |
|
if (ref($rec->{$f}) eq 'ARRAY') { |
457 |
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
my @out; |
458 |
$log->debug("about to filter{$filter_name} format: $out"); |
foreach my $h ( @{ $rec->{$f} } ) { |
459 |
$out = $self->{'filter'}->{$filter_name}->($out); |
if (ref($h) eq 'HASH') { |
460 |
return unless(defined($out)); |
push @out, ( _pack_subfields_hash( $h ) ); |
461 |
$log->debug("filter result: $out"); |
} else { |
462 |
|
push @out, $h; |
463 |
|
} |
464 |
|
} |
465 |
|
return @out; |
466 |
|
} elsif( defined($rec->{$f}) ) { |
467 |
|
return $rec->{$f}; |
468 |
} |
} |
|
|
|
|
return $out; |
|
469 |
} |
} |
470 |
|
|
471 |
=head2 parse_to_arr |
=head2 rec2 |
472 |
|
|
473 |
Similar to C<parse>, but returns array of all repeatable fields |
Return all values in specific field and subfield |
474 |
|
|
475 |
my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
@v = rec2('200','a') |
476 |
|
|
477 |
=cut |
=cut |
478 |
|
|
479 |
sub parse_to_arr { |
sub rec2 { |
480 |
my $self = shift; |
my $f = shift; |
481 |
|
return unless (defined($rec && $rec->{$f})); |
482 |
|
my $sf = shift; |
483 |
|
warn "rec2($f,$sf) = ", dump( $rec->{$f} ), $/ if ($debug > 1); |
484 |
|
return map { |
485 |
|
if (ref($_->{$sf}) eq 'ARRAY') { |
486 |
|
@{ $_->{$sf} }; |
487 |
|
} else { |
488 |
|
$_->{$sf}; |
489 |
|
} |
490 |
|
} grep { ref($_) eq 'HASH' && defined $_->{$sf} } @{ $rec->{$f} }; |
491 |
|
} |
492 |
|
|
493 |
|
=head2 rec |
494 |
|
|
495 |
my ($rec, $format_utf8) = @_; |
syntaxtic sugar for |
496 |
|
|
497 |
my $log = $self->_get_logger(); |
@v = rec('200') |
498 |
|
@v = rec('200','a') |
499 |
|
|
500 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
If rec() returns just single value, it will |
501 |
return if (! $format_utf8); |
return scalar, not array. |
502 |
|
|
503 |
my $i = 0; |
=cut |
|
my @arr; |
|
504 |
|
|
505 |
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
sub rec { |
506 |
push @arr, $v; |
my @out; |
507 |
|
if ($#_ == 0) { |
508 |
|
@out = rec1(@_); |
509 |
|
} elsif ($#_ == 1) { |
510 |
|
@out = rec2(@_); |
511 |
|
} |
512 |
|
if ($#out == 0 && ! wantarray) { |
513 |
|
return $out[0]; |
514 |
|
} elsif (@out) { |
515 |
|
return @out; |
516 |
|
} else { |
517 |
|
return ''; |
518 |
} |
} |
519 |
|
} |
520 |
|
|
521 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
=head2 frec |
522 |
|
|
523 |
return @arr; |
Returns first value from field |
|
} |
|
524 |
|
|
525 |
|
$v = frec('200'); |
526 |
|
$v = frec('200','a'); |
527 |
|
|
528 |
=head2 fill_in |
=cut |
529 |
|
|
530 |
|
sub frec { |
531 |
|
my @out = rec(@_); |
532 |
|
warn "rec(",dump(@_),") has more than one return value, ignoring\n" if $#out > 0; |
533 |
|
return shift @out; |
534 |
|
} |
535 |
|
|
536 |
|
=head2 frec_eq |
537 |
|
|
538 |
Workhourse of all: takes record from in-memory structure of database and |
=head2 frec_ne |
|
strings with placeholders and returns string or array of with substituted |
|
|
values from record. |
|
539 |
|
|
540 |
my $text = $webpac->fill_in($rec,'v250^a'); |
Check if first values from two fields are same or different |
541 |
|
|
542 |
Optional argument is ordinal number for repeatable fields. By default, |
if ( frec_eq( 900 => 'a', 910 => 'c' ) ) { |
543 |
it's assume to be first repeatable field (fields are perl array, so first |
# values are same |
544 |
element is 0). |
} else { |
545 |
Following example will read second value from repeatable field. |
# values are different |
546 |
|
} |
547 |
|
|
548 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
Strictly speaking C<frec_eq> and C<frec_ne> wouldn't be needed if you |
549 |
|
could write something like: |
550 |
|
|
551 |
This function B<does not> perform parsing of format to inteligenty skip |
if ( frec( '900','a' ) eq frec( '910','c' ) ) { |
552 |
delimiters before fields which aren't used. |
# yada tada |
553 |
|
} |
554 |
|
|
555 |
This method will automatically decode UTF-8 string to local code page |
but you can't since our parser L<WebPAC::Parser> will remove all whitespaces |
556 |
if needed. |
in order to parse text and create invalid function C<eqfrec>. |
557 |
|
|
558 |
=cut |
=cut |
559 |
|
|
560 |
sub fill_in { |
sub frec_eq { |
561 |
my $self = shift; |
my ( $f1,$sf1, $f2, $sf2 ) = @_; |
562 |
|
return (rec( $f1, $sf1 ))[0] eq (rec( $f2, $sf2 ))[0]; |
563 |
|
} |
564 |
|
|
565 |
my $log = $self->_get_logger(); |
sub frec_ne { |
566 |
|
return ! frec_eq( @_ ); |
567 |
|
} |
568 |
|
|
569 |
my $rec = shift || $log->logconfess("need data record"); |
=head2 regex |
|
my $format = shift || $log->logconfess("need format to parse"); |
|
|
# iteration (for repeatable fields) |
|
|
my $i = shift || 0; |
|
570 |
|
|
571 |
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
Apply regex to some or all values |
572 |
|
|
573 |
# FIXME remove for speedup? |
@v = regex( 's/foo/bar/g', @v ); |
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
|
574 |
|
|
575 |
if (utf8::is_utf8($format)) { |
=cut |
576 |
$format = $self->_x($format); |
|
577 |
|
sub regex { |
578 |
|
my $r = shift; |
579 |
|
my @out; |
580 |
|
#warn "r: $r\n", dump(\@_); |
581 |
|
foreach my $t (@_) { |
582 |
|
next unless ($t); |
583 |
|
eval "\$t =~ $r"; |
584 |
|
push @out, $t if ($t && $t ne ''); |
585 |
} |
} |
586 |
|
return @out; |
587 |
|
} |
588 |
|
|
589 |
my $found = 0; |
=head2 prefix |
590 |
|
|
591 |
my $eval_code; |
Prefix all values with a string |
|
# remove eval{...} from beginning |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
|
592 |
|
|
593 |
my $filter_name; |
@v = prefix( 'my_', @v ); |
|
# remove filter{...} from beginning |
|
|
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
|
594 |
|
|
595 |
# do actual replacement of placeholders |
=cut |
|
# 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,$2,0,\$found)/ges; |
|
596 |
|
|
597 |
if ($found) { |
sub prefix { |
598 |
$log->debug("format: $format"); |
my $p = shift; |
599 |
if ($eval_code) { |
return @_ unless defined( $p ); |
600 |
my $eval = $self->fill_in($rec,$eval_code,$i); |
return map { $p . $_ } grep { defined($_) } @_; |
|
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; |
|
|
} |
|
601 |
} |
} |
602 |
|
|
603 |
|
=head2 suffix |
604 |
|
|
605 |
=head2 fill_in_to_arr |
suffix all values with a string |
|
|
|
|
Similar to C<fill_in>, but returns array of all repeatable fields. Usable |
|
|
for fields which have lookups, so they shouldn't be parsed but rather |
|
|
C<fill_id>ed. |
|
606 |
|
|
607 |
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]'); |
@v = suffix( '_my', @v ); |
608 |
|
|
609 |
=cut |
=cut |
610 |
|
|
611 |
sub fill_in_to_arr { |
sub suffix { |
612 |
my $self = shift; |
my $s = shift; |
613 |
|
return @_ unless defined( $s ); |
614 |
|
return map { $_ . $s } grep { defined($_) } @_; |
615 |
|
} |
616 |
|
|
617 |
my ($rec, $format_utf8) = @_; |
=head2 surround |
618 |
|
|
619 |
my $log = $self->_get_logger(); |
surround all values with a two strings |
620 |
|
|
621 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
@v = surround( 'prefix_', '_suffix', @v ); |
|
return if (! $format_utf8); |
|
622 |
|
|
623 |
my $i = 0; |
=cut |
|
my @arr; |
|
624 |
|
|
625 |
while (my @v = $self->fill_in($rec,$format_utf8,$i++)) { |
sub surround { |
626 |
push @arr, @v; |
my $p = shift; |
627 |
} |
my $s = shift; |
628 |
|
$p = '' unless defined( $p ); |
629 |
|
$s = '' unless defined( $s ); |
630 |
|
return map { $p . $_ . $s } grep { defined($_) } @_; |
631 |
|
} |
632 |
|
|
633 |
|
=head2 first |
634 |
|
|
635 |
|
Return first element |
636 |
|
|
637 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
$v = first( @v ); |
638 |
|
|
639 |
return @arr; |
=cut |
640 |
|
|
641 |
|
sub first { |
642 |
|
my $r = shift; |
643 |
|
return $r; |
644 |
} |
} |
645 |
|
|
646 |
|
=head2 lookup |
647 |
|
|
648 |
=head2 get_data |
Consult lookup hashes for some value |
649 |
|
|
650 |
Returns value from record. |
@v = lookup( |
651 |
|
sub { |
652 |
|
'ffkk/peri/mfn'.rec('000') |
653 |
|
}, |
654 |
|
'ffkk','peri','200-a-200-e', |
655 |
|
sub { |
656 |
|
first(rec(200,'a')).' '.first(rec('200','e')) |
657 |
|
} |
658 |
|
); |
659 |
|
|
660 |
|
Code like above will be B<automatically generated> using L<WebPAC::Parse> from |
661 |
|
normal lookup definition in C<conf/lookup/something.pl> which looks like: |
662 |
|
|
663 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
lookup( |
664 |
|
# which results to return from record recorded in lookup |
665 |
|
sub { 'ffkk/peri/mfn' . rec('000') }, |
666 |
|
# from which database and input |
667 |
|
'ffkk','peri', |
668 |
|
# such that following values match |
669 |
|
sub { first(rec(200,'a')) . ' ' . first(rec('200','e')) }, |
670 |
|
# if this part is missing, we will try to match same fields |
671 |
|
# from lookup record and current one, or you can override |
672 |
|
# which records to use from current record using |
673 |
|
sub { rec('900','x') . ' ' . rec('900','y') }, |
674 |
|
) |
675 |
|
|
676 |
Arguments are: |
You can think about this lookup as SQL (if that helps): |
|
record reference C<$rec>, |
|
|
field C<$f>, |
|
|
optional subfiled C<$sf>, |
|
|
index for repeatable values C<$i>. |
|
677 |
|
|
678 |
Optinal variable C<$found> will be incremeted if there |
select |
679 |
is field. |
sub { what } |
680 |
|
from |
681 |
|
database, input |
682 |
|
where |
683 |
|
sub { filter from lookuped record } |
684 |
|
having |
685 |
|
sub { optional filter on current record } |
686 |
|
|
687 |
Returns value or empty string. |
Easy as pie, right? |
688 |
|
|
689 |
=cut |
=cut |
690 |
|
|
691 |
sub get_data { |
sub lookup { |
692 |
my $self = shift; |
my ($what, $database, $input, $key, $having) = @_; |
693 |
|
|
694 |
my ($rec,$f,$sf,$i,$found) = @_; |
confess "lookup needs 5 arguments: what, database, input, key, having\n" unless ($#_ == 4); |
695 |
|
|
696 |
if ($$rec->{$f}) { |
warn "## lookup ($database, $input, $key)", $/ if ($debug > 1); |
697 |
return '' if (! $$rec->{$f}->[$i]); |
return unless (defined($lookup->{$database}->{$input}->{$key})); |
698 |
no strict 'refs'; |
|
699 |
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
confess "lookup really need load_row_coderef added to data_structure\n" unless ($load_row_coderef); |
700 |
$$found++ if (defined($$found)); |
|
701 |
return $$rec->{$f}->[$i]->{$sf}; |
my $mfns; |
702 |
} elsif (! $sf && $$rec->{$f}->[$i]) { |
my @having = $having->(); |
703 |
$$found++ if (defined($$found)); |
|
704 |
# it still might have subfield, just |
warn "## having = ", dump( @having ) if ($debug > 2); |
705 |
# not specified, so we'll dump all |
|
706 |
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
foreach my $h ( @having ) { |
707 |
my $out; |
if (defined($lookup->{$database}->{$input}->{$key}->{$h})) { |
708 |
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
warn "lookup for $database/$input/$key/$h return ",dump($lookup->{$database}->{$input}->{$key}->{$h}),"\n" if ($debug); |
709 |
$out .= $$rec->{$f}->[$i]->{$k}." "; |
$mfns->{$_}++ foreach keys %{ $lookup->{$database}->{$input}->{$key}->{$h} }; |
|
} |
|
|
return $out; |
|
|
} else { |
|
|
return $$rec->{$f}->[$i]; |
|
|
} |
|
|
} else { |
|
|
return ''; |
|
710 |
} |
} |
711 |
|
} |
712 |
|
|
713 |
|
return unless ($mfns); |
714 |
|
|
715 |
|
my @mfns = sort keys %$mfns; |
716 |
|
|
717 |
|
warn "# lookup loading $database/$input/$key mfn ", join(",",@mfns)," having ",dump(@having),"\n" if ($debug); |
718 |
|
|
719 |
|
my $old_rec = $rec; |
720 |
|
my @out; |
721 |
|
|
722 |
|
foreach my $mfn (@mfns) { |
723 |
|
$rec = $load_row_coderef->( $database, $input, $mfn ); |
724 |
|
|
725 |
|
warn "got $database/$input/$mfn = ", dump($rec), $/ if ($debug); |
726 |
|
|
727 |
|
my @vals = $what->(); |
728 |
|
|
729 |
|
push @out, ( @vals ); |
730 |
|
|
731 |
|
warn "lookup for mfn $mfn returned ", dump(@vals), $/ if ($debug); |
732 |
|
} |
733 |
|
|
734 |
|
# if (ref($lookup->{$k}) eq 'ARRAY') { |
735 |
|
# return @{ $lookup->{$k} }; |
736 |
|
# } else { |
737 |
|
# return $lookup->{$k}; |
738 |
|
# } |
739 |
|
|
740 |
|
$rec = $old_rec; |
741 |
|
|
742 |
|
warn "## lookup returns = ", dump(@out), $/ if ($debug); |
743 |
|
|
744 |
|
if ($#out == 0) { |
745 |
|
return $out[0]; |
746 |
} else { |
} else { |
747 |
return ''; |
return @out; |
748 |
} |
} |
749 |
} |
} |
750 |
|
|
751 |
|
=head2 save_into_lookup |
752 |
|
|
753 |
=head2 apply_format |
Save value into lookup. It associates current database, input |
754 |
|
and specific keys with one or more values which will be |
755 |
|
associated over MFN. |
756 |
|
|
757 |
Apply format specified in tag with C<format_name="name"> and |
MFN will be extracted from first occurence current of field 000 |
758 |
C<format_delimiter=";;">. |
in current record, or if it doesn't exist from L<_set_config> C<_mfn>. |
759 |
|
|
760 |
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
my $nr = save_into_lookup($database,$input,$key,sub { |
761 |
|
# code which produce one or more values |
762 |
|
}); |
763 |
|
|
764 |
Formats can contain C<lookup{...}> if you need them. |
It returns number of items saved. |
765 |
|
|
766 |
|
This function shouldn't be called directly, it's called from code created by |
767 |
|
L<WebPAC::Parser>. |
768 |
|
|
769 |
=cut |
=cut |
770 |
|
|
771 |
sub apply_format { |
sub save_into_lookup { |
772 |
my $self = shift; |
my ($database,$input,$key,$coderef) = @_; |
773 |
|
die "save_into_lookup needs database" unless defined($database); |
774 |
|
die "save_into_lookup needs input" unless defined($input); |
775 |
|
die "save_into_lookup needs key" unless defined($key); |
776 |
|
die "save_into_lookup needs CODE" unless ( defined($coderef) && ref($coderef) eq 'CODE' ); |
777 |
|
|
778 |
|
warn "## save_into_lookup rec = ", dump($rec), " config = ", dump($config), $/ if ($debug > 2); |
779 |
|
|
780 |
my ($name,$delimiter,$data) = @_; |
my $mfn = |
781 |
|
defined($rec->{'000'}->[0]) ? $rec->{'000'}->[0] : |
782 |
|
defined($config->{_mfn}) ? $config->{_mfn} : |
783 |
|
die "mfn not defined or zero"; |
784 |
|
|
785 |
my $log = $self->_get_logger(); |
my $nr = 0; |
786 |
|
|
787 |
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
foreach my $v ( $coderef->() ) { |
788 |
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
$lookup->{$database}->{$input}->{$key}->{$v}->{$mfn}++; |
789 |
return $data; |
warn "# saved lookup $database/$input/$key [$v] $mfn\n" if ($debug > 1); |
790 |
|
$nr++; |
791 |
} |
} |
792 |
|
|
793 |
$log->warn("no delimiter for format $name") if (! $delimiter); |
return $nr; |
794 |
|
} |
795 |
|
|
796 |
|
=head2 config |
797 |
|
|
798 |
|
Consult config values stored in C<config.yml> |
799 |
|
|
800 |
|
# return database code (key under databases in yaml) |
801 |
|
$database_code = config(); # use _ from hash |
802 |
|
$database_name = config('name'); |
803 |
|
$database_input_name = config('input name'); |
804 |
|
|
805 |
|
Up to three levels are supported. |
806 |
|
|
807 |
|
=cut |
808 |
|
|
809 |
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
sub config { |
810 |
|
return unless ($config); |
811 |
|
|
812 |
my @data = split(/\Q$delimiter\E/, $data); |
my $p = shift; |
813 |
|
|
814 |
my $out = sprintf($format, @data); |
$p ||= ''; |
|
$log->debug("using format $name [$format] on $data to produce: $out"); |
|
815 |
|
|
816 |
if ($self->{'lookup_regex'} && $out =~ $self->{'lookup_regex'}) { |
my $v; |
817 |
return $self->{'lookup'}->lookup($out); |
|
818 |
|
warn "### getting config($p)\n" if ($debug > 1); |
819 |
|
|
820 |
|
my @p = split(/\s+/,$p); |
821 |
|
if ($#p < 0) { |
822 |
|
$v = $config->{ '_' }; # special, database code |
823 |
} else { |
} else { |
824 |
return $out; |
|
825 |
|
my $c = dclone( $config ); |
826 |
|
|
827 |
|
foreach my $k (@p) { |
828 |
|
warn "### k: $k c = ",dump($c),$/ if ($debug > 1); |
829 |
|
if (ref($c) eq 'ARRAY') { |
830 |
|
$c = shift @$c; |
831 |
|
warn "config($p) taking first occurence of '$k', probably not what you wanted!\n"; |
832 |
|
last; |
833 |
|
} |
834 |
|
|
835 |
|
if (! defined($c->{$k}) ) { |
836 |
|
$c = undef; |
837 |
|
last; |
838 |
|
} else { |
839 |
|
$c = $c->{$k}; |
840 |
|
} |
841 |
|
} |
842 |
|
$v = $c if ($c); |
843 |
|
|
844 |
} |
} |
845 |
|
|
846 |
|
warn "## config( '$p' ) = ",dump( $v ),$/ if ($v && $debug); |
847 |
|
warn "config( '$p' ) is empty\n" if (! $v); |
848 |
|
|
849 |
|
return $v; |
850 |
} |
} |
851 |
|
|
852 |
=head2 sort_arr |
=head2 id |
853 |
|
|
854 |
|
Returns unique id of this record |
855 |
|
|
856 |
Sort array ignoring case and html in data |
$id = id(); |
857 |
|
|
858 |
my @sorted = $webpac->sort_arr(@unsorted); |
Returns C<42/2> for 2nd occurence of MFN 42. |
859 |
|
|
860 |
=cut |
=cut |
861 |
|
|
862 |
sub sort_arr { |
sub id { |
863 |
my $self = shift; |
my $mfn = $config->{_mfn} || die "no _mfn in config data"; |
864 |
|
return $mfn . ( WebPAC::Normalize::MARC::_created_marc_records() || '' ); |
865 |
|
} |
866 |
|
|
867 |
|
=head2 join_with |
868 |
|
|
869 |
my $log = $self->_get_logger(); |
Joins walues with some delimiter |
870 |
|
|
871 |
# FIXME add Schwartzian Transformation? |
$v = join_with(", ", @v); |
872 |
|
|
873 |
my @sorted = sort { |
=cut |
|
$a =~ s#<[^>]+/*>##; |
|
|
$b =~ s#<[^>]+/*>##; |
|
|
lc($b) cmp lc($a) |
|
|
} @_; |
|
|
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
|
874 |
|
|
875 |
return @sorted; |
sub join_with { |
876 |
|
my $d = shift; |
877 |
|
warn "### join_with('$d',",dump(@_),")\n" if ($debug > 2); |
878 |
|
my $v = join($d, grep { defined($_) && $_ ne '' } @_); |
879 |
|
return '' unless defined($v); |
880 |
|
return $v; |
881 |
} |
} |
882 |
|
|
883 |
|
=head2 split_rec_on |
884 |
|
|
885 |
=head1 INTERNAL METHODS |
Split record subfield on some regex and take one of parts out |
886 |
|
|
887 |
=head2 _sort_by_order |
$a_before_semi_column = |
888 |
|
split_rec_on('200','a', /\s*;\s*/, $part); |
889 |
|
|
890 |
Sort xml tags data structure accoding to C<order=""> attribute. |
C<$part> is optional number of element. First element is |
891 |
|
B<1>, not 0! |
892 |
|
|
893 |
|
If there is no C<$part> parameter or C<$part> is 0, this function will |
894 |
|
return all values produced by splitting. |
895 |
|
|
896 |
=cut |
=cut |
897 |
|
|
898 |
sub _sort_by_order { |
sub split_rec_on { |
899 |
my $self = shift; |
die "split_rec_on need (fld,sf,regex[,part]" if ($#_ < 2); |
900 |
|
|
901 |
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
my ($fld, $sf, $regex, $part) = @_; |
902 |
$self->{'import_xml'}->{'indexer'}->{$a}; |
warn "### regex ", ref($regex), $regex, $/ if ($debug > 2); |
|
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
|
|
$self->{'import_xml'}->{'indexer'}->{$b}; |
|
903 |
|
|
904 |
return $va <=> $vb; |
my @r = rec( $fld, $sf ); |
905 |
} |
my $v = shift @r; |
906 |
|
warn "### first rec($fld,$sf) = ",dump($v),$/ if ($debug > 2); |
907 |
|
|
908 |
=head2 _x |
return '' if ( ! defined($v) || $v =~ /^\s*$/); |
909 |
|
|
910 |
Convert strings from C<conf/normalize/*.xml> encoding into application |
my @s = split( $regex, $v ); |
911 |
specific encoding (optinally specified using C<code_page> to C<new> |
warn "## split_rec_on($fld,$sf,$regex,$part) = ",dump(@s),$/ if ($debug > 1); |
912 |
constructor). |
if ($part && $part > 0) { |
913 |
|
return $s[ $part - 1 ]; |
914 |
|
} else { |
915 |
|
return @s; |
916 |
|
} |
917 |
|
} |
918 |
|
|
919 |
my $text = $n->_x('normalize text string'); |
my $hash; |
920 |
|
|
921 |
This is a stub so that other modules doesn't have to implement it. |
=head2 set |
922 |
|
|
923 |
|
set( key => 'value' ); |
924 |
|
|
925 |
=cut |
=cut |
926 |
|
|
927 |
sub _x { |
sub set { |
928 |
my $self = shift; |
my ($k,$v) = @_; |
929 |
return shift; |
warn "## set ( $k => ", dump($v), " )", $/ if ( $debug ); |
930 |
} |
$hash->{$k} = $v; |
931 |
|
}; |
932 |
|
|
933 |
|
=head2 get |
934 |
|
|
935 |
=head1 AUTHOR |
get( 'key' ); |
936 |
|
|
937 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
=cut |
938 |
|
|
939 |
=head1 COPYRIGHT & LICENSE |
sub get { |
940 |
|
my $k = shift || return; |
941 |
|
my $v = $hash->{$k}; |
942 |
|
warn "## get $k = ", dump( $v ), $/ if ( $debug ); |
943 |
|
return $v; |
944 |
|
} |
945 |
|
|
946 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
=head2 count |
947 |
|
|
948 |
This program is free software; you can redistribute it and/or modify it |
if ( count( @result ) == 1 ) { |
949 |
under the same terms as Perl itself. |
# do something if only 1 result is there |
950 |
|
} |
951 |
|
|
952 |
=cut |
=cut |
953 |
|
|
954 |
1; # End of WebPAC::Normalize |
sub count { |
955 |
|
warn "## count ",dump(@_),$/ if ( $debug ); |
956 |
|
return @_ . ''; |
957 |
|
} |
958 |
|
|
959 |
|
# END |
960 |
|
1; |