| 1 |
package WebPAC::Normalize::MARC; |
| 2 |
use Exporter 'import'; |
| 3 |
our @EXPORT = qw/ |
| 4 |
marc marc_indicators marc_repeatable_subfield |
| 5 |
marc_compose marc_leader marc_fixed |
| 6 |
marc_duplicate marc_remove marc_count |
| 7 |
marc_original_order |
| 8 |
marc_template |
| 9 |
/; |
| 10 |
|
| 11 |
use strict; |
| 12 |
use warnings; |
| 13 |
|
| 14 |
use Storable qw/dclone/; |
| 15 |
use Data::Dump qw/dump/; |
| 16 |
use Carp qw/confess/; |
| 17 |
|
| 18 |
use WebPAC::Normalize; |
| 19 |
|
| 20 |
our $debug = 0; |
| 21 |
|
| 22 |
my ($marc_record, $marc_encoding, $marc_repeatable_subfield, $marc_indicators, $marc_leader); |
| 23 |
my ($marc_record_offset, $marc_fetch_offset) = (0, 0); |
| 24 |
|
| 25 |
our $rec; |
| 26 |
|
| 27 |
=head1 NAME |
| 28 |
|
| 29 |
WebPAC::Normalize::MARC - create MARC/ISO2709 records |
| 30 |
|
| 31 |
=cut |
| 32 |
|
| 33 |
=head1 FUNCTIONS |
| 34 |
|
| 35 |
=head2 marc_template |
| 36 |
|
| 37 |
marc_template( |
| 38 |
from => 225, to => 440, |
| 39 |
subfields_rename => [ |
| 40 |
'a' => 'a', |
| 41 |
'x' => 'x', |
| 42 |
'v' => 'v', |
| 43 |
'h' => 'n', |
| 44 |
'i' => 'p', |
| 45 |
'w' => 'v', |
| 46 |
], |
| 47 |
isis_template => [ |
| 48 |
'a ; |v. |i', |
| 49 |
'a. |i ; |w', |
| 50 |
], |
| 51 |
marc_template => [ |
| 52 |
'a, |x ; |v. |n, |p ; |v', |
| 53 |
'a ; |v. |p ; |v', |
| 54 |
], |
| 55 |
); |
| 56 |
|
| 57 |
Returns number of records produced. |
| 58 |
|
| 59 |
=cut |
| 60 |
|
| 61 |
sub marc_template { |
| 62 |
my $args = {@_}; |
| 63 |
warn "## marc_template(",dump($args),")",$/ if $debug; |
| 64 |
|
| 65 |
foreach ( qw/subfields_rename isis_template marc_template/ ) { |
| 66 |
# warn "ref($_) = ",ref($args->{$_}) if $debug; |
| 67 |
die "$_ not ARRAY" if defined($args->{$_}) && ref($args->{$_}) ne 'ARRAY'; |
| 68 |
} |
| 69 |
|
| 70 |
die "marc_template needs isis_template or marc_template" |
| 71 |
if ! defined $args->{isis_template} && ! defined $args->{marc_template}; |
| 72 |
|
| 73 |
my $rec = WebPAC::Normalize::_get_rec() || die "_get_rec?"; |
| 74 |
my $r = $rec->{ $args->{from} } || return; |
| 75 |
die "record field ", $args->{from}, " isn't array ",dump( $rec ) unless (ref($r) eq 'ARRAY'); |
| 76 |
|
| 77 |
my @subfields_rename = @{ $args->{subfields_rename} }; |
| 78 |
# warn "### subfields_rename [$#subfields_rename] = ",dump( @subfields_rename ) if $debug; |
| 79 |
|
| 80 |
confess "need mapping in pairs for subfields_rename" |
| 81 |
if $#subfields_rename % 2 != 1; |
| 82 |
|
| 83 |
my ( $subfields_rename, $from_subfields ); |
| 84 |
our $to_subfields = {}; |
| 85 |
while ( my ( $from, $to ) = splice(@subfields_rename, 0, 2) ) { |
| 86 |
my ( $f, $t ) = ( |
| 87 |
$from_subfields->{ $from }++, |
| 88 |
$to_subfields->{ $to }++ |
| 89 |
); |
| 90 |
$subfields_rename->{ $from }->[ $f ] = [ $to => $t ]; |
| 91 |
} |
| 92 |
warn "### subfields_rename = ",dump( $subfields_rename ),$/ if $debug; |
| 93 |
warn "### from_subfields = ", dump( $from_subfields ),$/ if $debug; |
| 94 |
warn "### to_subfields = ", dump( $to_subfields ),$/ if $debug; |
| 95 |
|
| 96 |
our $_template; |
| 97 |
|
| 98 |
$_template->{isis}->{fields_re} = join('|', keys %$from_subfields ); |
| 99 |
$_template->{marc}->{fields_re} = join('|', keys %$to_subfields ); |
| 100 |
|
| 101 |
my @marc_out; |
| 102 |
|
| 103 |
sub _parse_template { |
| 104 |
my ( $name, $templates ) = @_; |
| 105 |
|
| 106 |
my $fields_re = $_template->{$name}->{fields_re} || die "can't find $name in ",dump( $_template->{$name}->{fields_re} ); |
| 107 |
|
| 108 |
foreach my $template ( @{ $templates } ) { |
| 109 |
our $count = {}; |
| 110 |
our @order = (); |
| 111 |
sub my_count { |
| 112 |
my $sf = shift; |
| 113 |
my $nr = $count->{$sf}++; |
| 114 |
push @order, [ $sf, $nr ]; |
| 115 |
return $sf . $nr; |
| 116 |
} |
| 117 |
my $pos_template = $template; |
| 118 |
$pos_template =~ s/($fields_re)/my_count($1)/ge; |
| 119 |
my $count_key = dump( $count ); |
| 120 |
warn "### template: |$template| -> |$pos_template| count = $count_key order = ",dump( @order ),$/ if $debug; |
| 121 |
$_template->{$name}->{pos}->{ $count_key } = $pos_template; |
| 122 |
$_template->{$name}->{order}->{ $pos_template } = [ @order ]; |
| 123 |
} |
| 124 |
warn "### from ",dump( $templates ), " using $fields_re created ", dump( $_template ),$/ if $debug; |
| 125 |
} |
| 126 |
|
| 127 |
_parse_template( 'marc', $args->{marc_template} ); |
| 128 |
_parse_template( 'isis', $args->{isis_template} ); |
| 129 |
warn "### _template = ",dump( $_template ),$/ if $debug; |
| 130 |
|
| 131 |
my $m; |
| 132 |
|
| 133 |
foreach my $r ( @{ $rec->{ $args->{from} } } ) { |
| 134 |
|
| 135 |
my $i1 = $r->{i1} || ' '; |
| 136 |
my $i2 = $r->{i2} || ' '; |
| 137 |
$m = [ $args->{to}, $i1, $i2 ]; |
| 138 |
|
| 139 |
warn "### r = ",dump( $r ),$/ if $debug; |
| 140 |
|
| 141 |
my ( $from_mapping, $to_mapping, $from_count, $to_count ); |
| 142 |
foreach my $from_sf ( keys %{$r} ) { |
| 143 |
# skip everything which isn't one char subfield (e.g. 'subfields') |
| 144 |
next unless $from_sf =~ m/^\w$/; |
| 145 |
my $from_nr = $from_count->{$from_sf}++; |
| 146 |
my $rename_to = $subfields_rename->{ $from_sf } || |
| 147 |
die "can't find subfield rename for $from_sf/$from_nr in ", dump( $subfields_rename ); |
| 148 |
my ( $to_sf, $to_nr ) = @{ $rename_to->[$from_nr] }; |
| 149 |
$to_mapping->{ $to_sf }->[ $to_nr ] = [ $from_sf => $from_nr ]; |
| 150 |
|
| 151 |
my $to_nr2 = $to_count->{ $to_sf }++; |
| 152 |
$from_mapping->{ $from_sf }->[ $from_nr ] = [ $to_sf => $to_nr2 ]; |
| 153 |
|
| 154 |
warn "### from $from_sf/$from_nr -> $to_sf/$to_nr\tto $from_sf/$from_nr -> $to_sf/$to_nr2\n" if $debug; |
| 155 |
} |
| 156 |
|
| 157 |
warn "### from_mapping = ",dump( $from_mapping ), "\n### to_mapping = ",dump( $to_mapping ),$/ if $debug; |
| 158 |
|
| 159 |
my $count_key = { |
| 160 |
from => dump( $from_count ), |
| 161 |
to => dump( $to_count), |
| 162 |
}; |
| 163 |
|
| 164 |
warn "### count_key = ",dump( $count_key ),$/ if $debug; |
| 165 |
|
| 166 |
my $processed_templates = 0; |
| 167 |
|
| 168 |
# this defines order of traversal |
| 169 |
foreach ( qw/isis:from marc:to/ ) { |
| 170 |
my ($name,$count_name) = split(/:/); |
| 171 |
|
| 172 |
my $ckey = $count_key->{$count_name} || die "can't find count_key $count_name in ",dump( $count_key ); |
| 173 |
|
| 174 |
my $template = $_template->{$name}->{pos}->{ $ckey } || next; |
| 175 |
$processed_templates++; |
| 176 |
|
| 177 |
warn "### traverse $name $count_name selected template: |$template|\n" if $debug; |
| 178 |
|
| 179 |
our $fill_in = {}; |
| 180 |
|
| 181 |
my @templates = split(/\|/, $template ); |
| 182 |
@templates = ( $template ) unless @templates; |
| 183 |
|
| 184 |
warn "### templates = ",dump( @templates ),$/ if $debug; |
| 185 |
|
| 186 |
foreach my $sf ( @templates ) { |
| 187 |
sub fill_in { |
| 188 |
my ( $name, $r, $pre, $sf, $nr, $post ) = @_; |
| 189 |
warn "#### fill_in( $name, r, '$pre', $sf, $nr, '$post' )\n" if $debug; |
| 190 |
my ( $from_sf, $from_nr ); |
| 191 |
if ( $name eq 'marc' ) { |
| 192 |
die "no $sf/$nr in to_mapping: ",dump( $to_mapping ), " form record ",dump( $r ) unless defined $to_mapping->{$sf}->[$nr]; |
| 193 |
( $from_sf, $from_nr ) = @{ $to_mapping->{$sf}->[$nr] }; |
| 194 |
} else { |
| 195 |
( $from_sf, $from_nr ) = ( $sf, $nr ); |
| 196 |
} |
| 197 |
my $v = $r->{ $from_sf }; # || die "no $from_sf/$from_nr"; |
| 198 |
if ( ref( $v ) eq 'ARRAY' ) { |
| 199 |
$v = $pre . $v->[$from_nr] . $post; |
| 200 |
} elsif ( $from_nr == 0 ) { |
| 201 |
$v = $pre . $v . $post; |
| 202 |
} else { |
| 203 |
die "requested subfield $from_sf/$from_nr but it's ",dump( $v ); |
| 204 |
} |
| 205 |
warn "#### fill_in( $sf, $nr ) = $from_sf/$from_nr >>>> ",dump( $v ),$/ if $debug; |
| 206 |
$fill_in->{$sf}->[$nr] = $v; |
| 207 |
return $v; |
| 208 |
} |
| 209 |
my $fields_re = $_template->{$name}->{fields_re} || die "can't find $name in ",dump( $_template->{$name}->{fields_re} ); |
| 210 |
warn "#### $sf <<<< $fields_re\n" if $debug; |
| 211 |
$sf =~ s/^(.*?)($fields_re)(\d+)(.*?)$/fill_in($name,$r,$1,$2,$3,$4)/ge; |
| 212 |
warn "#### >>>> $sf with fill_in = ",dump( $fill_in ),$/ if $debug; |
| 213 |
} |
| 214 |
|
| 215 |
warn "## template: |$template|\n## _template->$name = ",dump( $_template->{$name} ),$/ if $debug; |
| 216 |
|
| 217 |
foreach my $sf ( @{ $_template->{$name}->{order}->{$template} } ) { |
| 218 |
my ( $sf, $nr ) = @$sf; |
| 219 |
my $v = $fill_in->{$sf}->[$nr] || die "can't find fill_in $sf/$nr"; |
| 220 |
if ( $name eq 'isis') { |
| 221 |
( $sf, $nr ) = @{ $from_mapping->{$sf}->[$nr] }; |
| 222 |
} |
| 223 |
warn "++ $sf/$nr |$v|\n" if $debug; |
| 224 |
push @$m, ( $sf, $v ); |
| 225 |
} |
| 226 |
|
| 227 |
warn "#### >>>> created MARC record: ", dump( $m ),$/ if $debug; |
| 228 |
|
| 229 |
push @marc_out, $m; |
| 230 |
|
| 231 |
last; |
| 232 |
} |
| 233 |
|
| 234 |
die "I don't have template for fields ",dump( $count_key ), "\n## available templates\n", dump( $_template ) unless $processed_templates; |
| 235 |
warn ">>> $processed_templates templates applied to data\n",$/ if $debug; |
| 236 |
} |
| 237 |
|
| 238 |
|
| 239 |
my $recs = 0; |
| 240 |
|
| 241 |
foreach my $marc ( @marc_out ) { |
| 242 |
warn "+++ ",dump( $marc ),$/ if $debug; |
| 243 |
_marc_push( $marc ); |
| 244 |
$recs++; |
| 245 |
} |
| 246 |
|
| 247 |
warn "### marc_template produced $recs MARC records: ",dump( @marc_out ),$/ if $debug; |
| 248 |
|
| 249 |
return $recs; |
| 250 |
} |
| 251 |
|
| 252 |
=head2 marc_leader |
| 253 |
|
| 254 |
Setup fields within MARC leader or get leader |
| 255 |
|
| 256 |
marc_leader('05','c'); |
| 257 |
my $leader = marc_leader(); |
| 258 |
|
| 259 |
=cut |
| 260 |
|
| 261 |
sub marc_leader { |
| 262 |
my ($offset,$value) = @_; |
| 263 |
|
| 264 |
if ($offset) { |
| 265 |
$marc_leader->[ $marc_record_offset ]->{ $offset } = $value; |
| 266 |
} else { |
| 267 |
|
| 268 |
if (defined($marc_leader)) { |
| 269 |
die "marc_leader not array = ", dump( $marc_leader ) unless (ref($marc_leader) eq 'ARRAY'); |
| 270 |
return $marc_leader->[ $marc_record_offset ]; |
| 271 |
} else { |
| 272 |
return; |
| 273 |
} |
| 274 |
} |
| 275 |
} |
| 276 |
|
| 277 |
=head2 marc_fixed |
| 278 |
|
| 279 |
Create control/indentifier fields with values in fixed positions |
| 280 |
|
| 281 |
marc_fixed('008', 00, '070402'); |
| 282 |
marc_fixed('008', 39, '|'); |
| 283 |
|
| 284 |
Positions not specified will be filled with spaces (C<0x20>). |
| 285 |
|
| 286 |
There will be no effort to extend last specified value to full length of |
| 287 |
field in standard. |
| 288 |
|
| 289 |
=cut |
| 290 |
|
| 291 |
sub marc_fixed { |
| 292 |
my ($f, $pos, $val) = @_; |
| 293 |
die "need marc(field, position, value)" unless defined($f) && defined($pos); |
| 294 |
|
| 295 |
confess "need val" unless defined $val; |
| 296 |
|
| 297 |
my $update = 0; |
| 298 |
|
| 299 |
map { |
| 300 |
if ($_->[0] eq $f) { |
| 301 |
my $old = $_->[1]; |
| 302 |
if (length($old) <= $pos) { |
| 303 |
$_->[1] .= ' ' x ( $pos - length($old) ) . $val; |
| 304 |
warn "## marc_fixed($f,$pos,'$val') append '$old' -> '$_->[1]'\n" if ($debug > 1); |
| 305 |
} else { |
| 306 |
$_->[1] = substr($old, 0, $pos) . $val . substr($old, $pos + length($val)); |
| 307 |
warn "## marc_fixed($f,$pos,'$val') update '$old' -> '$_->[1]'\n" if ($debug > 1); |
| 308 |
} |
| 309 |
$update++; |
| 310 |
} |
| 311 |
} @{ $marc_record->[ $marc_record_offset ] }; |
| 312 |
|
| 313 |
if (! $update) { |
| 314 |
my $v = ' ' x $pos . $val; |
| 315 |
push @{ $marc_record->[ $marc_record_offset ] }, [ $f, $v ]; |
| 316 |
warn "## marc_fixed($f,$pos,'val') created '$v'\n" if ($debug > 1); |
| 317 |
} |
| 318 |
} |
| 319 |
|
| 320 |
=head2 marc |
| 321 |
|
| 322 |
Save value for MARC field |
| 323 |
|
| 324 |
marc('900','a', rec('200','a') ); |
| 325 |
marc('001', rec('000') ); |
| 326 |
|
| 327 |
=cut |
| 328 |
|
| 329 |
sub marc { |
| 330 |
my $f = shift or die "marc needs field"; |
| 331 |
die "marc field must be numer" unless ($f =~ /^\d+$/); |
| 332 |
|
| 333 |
my $sf; |
| 334 |
if ($f >= 10) { |
| 335 |
$sf = shift or die "marc needs subfield"; |
| 336 |
} |
| 337 |
|
| 338 |
foreach (@_) { |
| 339 |
my $v = $_; # make var read-write for Encode |
| 340 |
next unless (defined($v) && $v !~ /^\s*$/); |
| 341 |
my ($i1,$i2) = defined($marc_indicators->{$f}) ? @{ $marc_indicators->{$f} } : (' ',' '); |
| 342 |
if (defined $sf) { |
| 343 |
push @{ $marc_record->[ $marc_record_offset ] }, [ $f, $i1, $i2, $sf => $v ]; |
| 344 |
} else { |
| 345 |
push @{ $marc_record->[ $marc_record_offset ] }, [ $f, $v ]; |
| 346 |
} |
| 347 |
} |
| 348 |
} |
| 349 |
|
| 350 |
=head2 marc_repeatable_subfield |
| 351 |
|
| 352 |
Save values for MARC repetable subfield |
| 353 |
|
| 354 |
marc_repeatable_subfield('910', 'z', rec('909') ); |
| 355 |
|
| 356 |
=cut |
| 357 |
|
| 358 |
sub marc_repeatable_subfield { |
| 359 |
my ($f,$sf) = @_; |
| 360 |
die "marc_repeatable_subfield need field and subfield!\n" unless ($f && $sf); |
| 361 |
$marc_repeatable_subfield->{ $f . $sf }++; |
| 362 |
marc(@_); |
| 363 |
} |
| 364 |
|
| 365 |
=head2 marc_indicators |
| 366 |
|
| 367 |
Set both indicators for MARC field |
| 368 |
|
| 369 |
marc_indicators('900', ' ', 1); |
| 370 |
|
| 371 |
Any indicator value other than C<0-9> will be treated as undefined. |
| 372 |
|
| 373 |
=cut |
| 374 |
|
| 375 |
sub marc_indicators { |
| 376 |
my $f = shift || die "marc_indicators need field!\n"; |
| 377 |
my ($i1,$i2) = @_; |
| 378 |
die "marc_indicators($f, ...) need i1!\n" unless(defined($i1)); |
| 379 |
die "marc_indicators($f, $i1, ...) need i2!\n" unless(defined($i2)); |
| 380 |
|
| 381 |
$i1 = ' ' if ($i1 !~ /^\d$/); |
| 382 |
$i2 = ' ' if ($i2 !~ /^\d$/); |
| 383 |
@{ $marc_indicators->{$f} } = ($i1,$i2); |
| 384 |
} |
| 385 |
|
| 386 |
=head2 marc_compose |
| 387 |
|
| 388 |
Save values for each MARC subfield explicitly |
| 389 |
|
| 390 |
marc_compose('900', |
| 391 |
'a', rec('200','a') |
| 392 |
'b', rec('201','a') |
| 393 |
'a', rec('200','b') |
| 394 |
'c', rec('200','c') |
| 395 |
); |
| 396 |
|
| 397 |
If you specify C<+> for subfield, value will be appended |
| 398 |
to previous defined subfield. |
| 399 |
|
| 400 |
=cut |
| 401 |
|
| 402 |
sub marc_compose { |
| 403 |
my $f = shift or die "marc_compose needs field"; |
| 404 |
die "marc_compose field must be numer" unless ($f =~ /^\d+$/); |
| 405 |
|
| 406 |
my ($i1,$i2) = defined($marc_indicators->{$f}) ? @{ $marc_indicators->{$f} } : (' ',' '); |
| 407 |
my $m = [ $f, $i1, $i2 ]; |
| 408 |
|
| 409 |
warn "### marc_compose input subfields = ", dump(@_),$/ if ($debug > 2); |
| 410 |
|
| 411 |
if ($#_ % 2 != 1) { |
| 412 |
die "ERROR: marc_compose",dump($f,@_)," not valid (must be even).\nDo you need to add first() or join() around some argument?\n"; |
| 413 |
} |
| 414 |
|
| 415 |
while (@_) { |
| 416 |
my $sf = shift; |
| 417 |
my $v = shift; |
| 418 |
|
| 419 |
next unless (defined($v) && $v !~ /^\s*$/); |
| 420 |
warn "## ++ marc_compose($f,$sf,$v) ", dump( $m ),$/ if ($debug > 1); |
| 421 |
if ($sf ne '+') { |
| 422 |
push @$m, ( $sf, $v ); |
| 423 |
} else { |
| 424 |
$m->[ $#$m ] .= $v; |
| 425 |
} |
| 426 |
} |
| 427 |
|
| 428 |
warn "## marc_compose current marc = ", dump( $m ),$/ if ($debug > 1); |
| 429 |
|
| 430 |
push @{ $marc_record->[ $marc_record_offset ] }, $m if ($#{$m} > 2); |
| 431 |
} |
| 432 |
|
| 433 |
=head2 marc_duplicate |
| 434 |
|
| 435 |
Generate copy of current MARC record and continue working on copy |
| 436 |
|
| 437 |
marc_duplicate(); |
| 438 |
|
| 439 |
Copies can be accessed using C<< _get_marc_fields( fetch_next => 1 ) >> or |
| 440 |
C<< _get_marc_fields( offset => 42 ) >>. |
| 441 |
|
| 442 |
=cut |
| 443 |
|
| 444 |
sub marc_duplicate { |
| 445 |
my $m = $marc_record->[ -1 ]; |
| 446 |
die "can't duplicate record which isn't defined" unless ($m); |
| 447 |
push @{ $marc_record }, dclone( $m ); |
| 448 |
push @{ $marc_leader }, dclone( marc_leader() ); |
| 449 |
warn "## marc_duplicate = ", dump(@$marc_leader, @$marc_record), $/ if ($debug > 1); |
| 450 |
$marc_record_offset = $#{ $marc_record }; |
| 451 |
warn "## marc_record_offset = $marc_record_offset", $/ if ($debug > 1); |
| 452 |
|
| 453 |
} |
| 454 |
|
| 455 |
=head2 marc_remove |
| 456 |
|
| 457 |
Remove some field or subfield from MARC record. |
| 458 |
|
| 459 |
marc_remove('200'); |
| 460 |
marc_remove('200','a'); |
| 461 |
|
| 462 |
This will erase field C<200> or C<200^a> from current MARC record. |
| 463 |
|
| 464 |
marc_remove('*'); |
| 465 |
|
| 466 |
Will remove all fields in current MARC record. |
| 467 |
|
| 468 |
This is useful after calling C<marc_duplicate> or on it's own (but, you |
| 469 |
should probably just remove that subfield definition if you are not |
| 470 |
using C<marc_duplicate>). |
| 471 |
|
| 472 |
FIXME: support fields < 10. |
| 473 |
|
| 474 |
=cut |
| 475 |
|
| 476 |
sub marc_remove { |
| 477 |
my ($f, $sf) = @_; |
| 478 |
|
| 479 |
die "marc_remove needs record number" unless defined($f); |
| 480 |
|
| 481 |
my $marc = $marc_record->[ $marc_record_offset ]; |
| 482 |
|
| 483 |
warn "### marc_remove before = ", dump( $marc ), $/ if ($debug > 2); |
| 484 |
|
| 485 |
if ($f eq '*') { |
| 486 |
|
| 487 |
delete( $marc_record->[ $marc_record_offset ] ); |
| 488 |
warn "## full marc_record = ", dump( @{ $marc_record }), $/ if ($debug > 1); |
| 489 |
|
| 490 |
} else { |
| 491 |
|
| 492 |
my $i = 0; |
| 493 |
foreach ( 0 .. $#{ $marc } ) { |
| 494 |
last unless (defined $marc->[$i]); |
| 495 |
warn "#### working on ",dump( @{ $marc->[$i] }), $/ if ($debug > 3); |
| 496 |
if ($marc->[$i]->[0] eq $f) { |
| 497 |
if (! defined $sf) { |
| 498 |
# remove whole field |
| 499 |
splice @$marc, $i, 1; |
| 500 |
warn "#### slice \@\$marc, $i, 1 = ",dump( @{ $marc }), $/ if ($debug > 3); |
| 501 |
$i--; |
| 502 |
} else { |
| 503 |
foreach my $j ( 0 .. (( $#{ $marc->[$i] } - 3 ) / 2) ) { |
| 504 |
my $o = ($j * 2) + 3; |
| 505 |
if ($marc->[$i]->[$o] eq $sf) { |
| 506 |
# remove subfield |
| 507 |
splice @{$marc->[$i]}, $o, 2; |
| 508 |
warn "#### slice \@{\$marc->[$i]}, $o, 2 = ", dump( @{ $marc }), $/ if ($debug > 3); |
| 509 |
# is record now empty? |
| 510 |
if ($#{ $marc->[$i] } == 2) { |
| 511 |
splice @$marc, $i, 1; |
| 512 |
warn "#### slice \@\$marc, $i, 1 = ", dump( @{ $marc }), $/ if ($debug > 3); |
| 513 |
$i--; |
| 514 |
}; |
| 515 |
} |
| 516 |
} |
| 517 |
} |
| 518 |
} |
| 519 |
$i++; |
| 520 |
} |
| 521 |
|
| 522 |
warn "### marc_remove($f", $sf ? ",$sf" : "", ") after = ", dump( $marc ), $/ if ($debug > 2); |
| 523 |
|
| 524 |
$marc_record->[ $marc_record_offset ] = $marc; |
| 525 |
} |
| 526 |
|
| 527 |
warn "## full marc_record = ", dump( @{ $marc_record }), $/ if ($debug > 1); |
| 528 |
} |
| 529 |
|
| 530 |
=head2 marc_original_order |
| 531 |
|
| 532 |
Copy all subfields preserving original order to marc field. |
| 533 |
|
| 534 |
marc_original_order( marc_field_number, original_input_field_number ); |
| 535 |
|
| 536 |
Please note that field numbers are consistent with other commands (marc |
| 537 |
field number first), but somewhat counter-intuitive (destination and then |
| 538 |
source). |
| 539 |
|
| 540 |
You might want to use this command if you are just renaming subfields or |
| 541 |
using pre-processing modify_record in C<config.yml> and don't need any |
| 542 |
post-processing or want to preserve order of original subfields. |
| 543 |
|
| 544 |
|
| 545 |
=cut |
| 546 |
|
| 547 |
sub marc_original_order { |
| 548 |
|
| 549 |
my ($to, $from) = @_; |
| 550 |
die "marc_original_order needs from and to fields\n" unless ($from && $to); |
| 551 |
|
| 552 |
return unless defined($rec->{$from}); |
| 553 |
|
| 554 |
my $r = $rec->{$from}; |
| 555 |
die "record field $from isn't array ",dump( $rec ) unless (ref($r) eq 'ARRAY'); |
| 556 |
|
| 557 |
my ($i1,$i2) = defined($marc_indicators->{$to}) ? @{ $marc_indicators->{$to} } : (' ',' '); |
| 558 |
warn "## marc_original_order($to,$from) source = ", dump( $r ),$/ if ($debug > 1); |
| 559 |
|
| 560 |
foreach my $d (@$r) { |
| 561 |
|
| 562 |
if (! defined($d->{subfields}) && ref($d->{subfields}) ne 'ARRAY') { |
| 563 |
warn "# marc_original_order($to,$from): field $from doesn't have subfields specification\n"; |
| 564 |
next; |
| 565 |
} |
| 566 |
|
| 567 |
my @sfs = @{ $d->{subfields} }; |
| 568 |
|
| 569 |
die "field $from doesn't have even number of subfields specifications\n" unless($#sfs % 2 == 1); |
| 570 |
|
| 571 |
warn "#--> d: ",dump($d), "\n#--> sfs: ",dump(@sfs),$/ if ($debug > 2); |
| 572 |
|
| 573 |
my $m = [ $to, $i1, $i2 ]; |
| 574 |
|
| 575 |
while (my $sf = shift @sfs) { |
| 576 |
|
| 577 |
warn "#--> sf: ",dump($sf), $/ if ($debug > 2); |
| 578 |
my $offset = shift @sfs; |
| 579 |
die "corrupted sufields specification for field $from\n" unless defined($offset); |
| 580 |
|
| 581 |
my $v; |
| 582 |
if (ref($d->{$sf}) eq 'ARRAY') { |
| 583 |
$v = $d->{$sf}->[$offset] if (defined($d->{$sf}->[$offset])); |
| 584 |
} elsif ($offset == 0) { |
| 585 |
$v = $d->{$sf}; |
| 586 |
} else { |
| 587 |
die "field $from subfield '$sf' need occurence $offset which doesn't exist", dump($d->{$sf}); |
| 588 |
} |
| 589 |
push @$m, ( $sf, $v ) if (defined($v)); |
| 590 |
} |
| 591 |
|
| 592 |
if ($#{$m} > 2) { |
| 593 |
push @{ $marc_record->[ $marc_record_offset ] }, $m; |
| 594 |
} |
| 595 |
} |
| 596 |
|
| 597 |
warn "## marc_record = ", dump( $marc_record ),$/ if ($debug > 1); |
| 598 |
} |
| 599 |
|
| 600 |
|
| 601 |
=head2 marc_count |
| 602 |
|
| 603 |
Return number of MARC records created using L</marc_duplicate>. |
| 604 |
|
| 605 |
print "created ", marc_count(), " records"; |
| 606 |
|
| 607 |
=cut |
| 608 |
|
| 609 |
sub marc_count { |
| 610 |
return $#{ $marc_record }; |
| 611 |
} |
| 612 |
|
| 613 |
=head2 _marc_push |
| 614 |
|
| 615 |
_marc_push( $marc ); |
| 616 |
|
| 617 |
=cut |
| 618 |
|
| 619 |
sub _marc_push { |
| 620 |
my $marc = shift || die "no marc?"; |
| 621 |
push @{ $marc_record->[ $marc_record_offset ] }, $marc; |
| 622 |
} |
| 623 |
|
| 624 |
=head1 PRIVATE FUNCTIONS |
| 625 |
|
| 626 |
=head2 _clean |
| 627 |
|
| 628 |
Clean internal structures |
| 629 |
|
| 630 |
=cut |
| 631 |
|
| 632 |
sub _clean { |
| 633 |
($marc_record, $marc_encoding, $marc_repeatable_subfield, $marc_indicators, $marc_leader) = (); |
| 634 |
($marc_record_offset, $marc_fetch_offset) = (0,0); |
| 635 |
} |
| 636 |
|
| 637 |
|
| 638 |
=head2 _get_marc_fields |
| 639 |
|
| 640 |
Get all fields defined by calls to C<marc> |
| 641 |
|
| 642 |
$marc->add_fields( WebPAC::Normalize:_get_marc_fields() ); |
| 643 |
|
| 644 |
We are using I<magic> which detect repeatable fields only from |
| 645 |
sequence of field/subfield data generated by normalization. |
| 646 |
|
| 647 |
Repeatable field is created when there is second occurence of same subfield or |
| 648 |
if any of indicators are different. |
| 649 |
|
| 650 |
This is sane for most cases. Something like: |
| 651 |
|
| 652 |
900a-1 900b-1 900c-1 |
| 653 |
900a-2 900b-2 |
| 654 |
900a-3 |
| 655 |
|
| 656 |
will be created from any combination of: |
| 657 |
|
| 658 |
900a-1 900a-2 900a-3 900b-1 900b-2 900c-1 |
| 659 |
|
| 660 |
and following rules: |
| 661 |
|
| 662 |
marc('900','a', rec('200','a') ); |
| 663 |
marc('900','b', rec('200','b') ); |
| 664 |
marc('900','c', rec('200','c') ); |
| 665 |
|
| 666 |
which might not be what you have in mind. If you need repeatable subfield, |
| 667 |
define it using C<marc_repeatable_subfield> like this: |
| 668 |
|
| 669 |
marc_repeatable_subfield('900','a'); |
| 670 |
marc('900','a', rec('200','a') ); |
| 671 |
marc('900','b', rec('200','b') ); |
| 672 |
marc('900','c', rec('200','c') ); |
| 673 |
|
| 674 |
will create: |
| 675 |
|
| 676 |
900a-1 900a-2 900a-3 900b-1 900c-1 |
| 677 |
900b-2 |
| 678 |
|
| 679 |
There is also support for returning next or specific using: |
| 680 |
|
| 681 |
while (my $mf = WebPAC::Normalize:_get_marc_fields( fetch_next => 1 ) ) { |
| 682 |
# do something with $mf |
| 683 |
} |
| 684 |
|
| 685 |
will always return fields from next MARC record or |
| 686 |
|
| 687 |
my $mf = WebPAC::Normalize::_get_marc_fields( offset => 42 ); |
| 688 |
|
| 689 |
will return 42th copy record (if it exists). |
| 690 |
|
| 691 |
=cut |
| 692 |
|
| 693 |
my $fetch_pos; |
| 694 |
|
| 695 |
sub _get_marc_fields { |
| 696 |
|
| 697 |
my $arg = {@_}; |
| 698 |
warn "### _get_marc_fields arg: ", dump($arg), $/ if ($debug > 2); |
| 699 |
$fetch_pos = $marc_fetch_offset; |
| 700 |
if ($arg->{offset}) { |
| 701 |
$fetch_pos = $arg->{offset}; |
| 702 |
} elsif($arg->{fetch_next}) { |
| 703 |
$marc_fetch_offset++; |
| 704 |
} |
| 705 |
|
| 706 |
return if (! $marc_record || ref($marc_record) ne 'ARRAY'); |
| 707 |
|
| 708 |
warn "### full marc_record = ", dump( @{ $marc_record }), $/ if ($debug > 2); |
| 709 |
|
| 710 |
my $marc_rec = $marc_record->[ $fetch_pos ]; |
| 711 |
|
| 712 |
warn "## _get_marc_fields (at offset: $fetch_pos) -- marc_record = ", dump( @$marc_rec ), $/ if ($debug > 1); |
| 713 |
|
| 714 |
return if (! $marc_rec || ref($marc_rec) ne 'ARRAY' || $#{ $marc_rec } < 0); |
| 715 |
|
| 716 |
# first, sort all existing fields |
| 717 |
# XXX might not be needed, but modern perl might randomize elements in hash |
| 718 |
my @sorted_marc_record = sort { |
| 719 |
$a->[0] . ( $a->[3] || '' ) cmp $b->[0] . ( $b->[3] || '') |
| 720 |
} @{ $marc_rec }; |
| 721 |
|
| 722 |
@sorted_marc_record = @{ $marc_rec }; ### FIXME disable sorting |
| 723 |
|
| 724 |
# output marc fields |
| 725 |
my @m; |
| 726 |
|
| 727 |
# count unique field-subfields (used for offset when walking to next subfield) |
| 728 |
my $u; |
| 729 |
map { $u->{ $_->[0] . ( $_->[3] || '') }++ } @sorted_marc_record; |
| 730 |
|
| 731 |
if ($debug) { |
| 732 |
warn "## marc_repeatable_subfield = ", dump( $marc_repeatable_subfield ), $/ if ( $marc_repeatable_subfield ); |
| 733 |
warn "## marc_record[$fetch_pos] = ", dump( $marc_rec ), $/; |
| 734 |
warn "## sorted_marc_record = ", dump( \@sorted_marc_record ), $/; |
| 735 |
warn "## subfield count = ", dump( $u ), $/; |
| 736 |
} |
| 737 |
|
| 738 |
my $len = $#sorted_marc_record; |
| 739 |
my $visited; |
| 740 |
my $i = 0; |
| 741 |
my $field; |
| 742 |
|
| 743 |
foreach ( 0 .. $len ) { |
| 744 |
|
| 745 |
# find next element which isn't visited |
| 746 |
while ($visited->{$i}) { |
| 747 |
$i = ($i + 1) % ($len + 1); |
| 748 |
} |
| 749 |
|
| 750 |
# mark it visited |
| 751 |
$visited->{$i}++; |
| 752 |
|
| 753 |
my $row = dclone( $sorted_marc_record[$i] ); |
| 754 |
|
| 755 |
# field and subfield which is key for |
| 756 |
# marc_repeatable_subfield and u |
| 757 |
my $fsf = $row->[0] . ( $row->[3] || '' ); |
| 758 |
|
| 759 |
if ($debug > 1) { |
| 760 |
|
| 761 |
print "### field so far [", $#$field, "] : ", dump( $field ), " ", $field ? 'T' : 'F', $/; |
| 762 |
print "### this [$i]: ", dump( $row ),$/; |
| 763 |
print "### sf: ", $row->[3], " vs ", $field->[3], |
| 764 |
$marc_repeatable_subfield->{ $row->[0] . $row->[3] } ? ' (repeatable)' : '', $/, |
| 765 |
if ($#$field >= 0); |
| 766 |
|
| 767 |
} |
| 768 |
|
| 769 |
# if field exists |
| 770 |
if ( $#$field >= 0 ) { |
| 771 |
if ( |
| 772 |
$row->[0] ne $field->[0] || # field |
| 773 |
$row->[1] ne $field->[1] || # i1 |
| 774 |
$row->[2] ne $field->[2] # i2 |
| 775 |
) { |
| 776 |
push @m, $field; |
| 777 |
warn "## saved/1 ", dump( $field ),$/ if ($debug); |
| 778 |
$field = $row; |
| 779 |
|
| 780 |
} elsif ( |
| 781 |
( $row->[3] lt $field->[-2] ) # subfield which is not next (e.g. a after c) |
| 782 |
|| |
| 783 |
( $row->[3] eq $field->[-2] && # same subfield, but not repeatable |
| 784 |
! $marc_repeatable_subfield->{ $fsf } |
| 785 |
) |
| 786 |
) { |
| 787 |
push @m, $field; |
| 788 |
warn "## saved/2 ", dump( $field ),$/ if ($debug); |
| 789 |
$field = $row; |
| 790 |
|
| 791 |
} else { |
| 792 |
# append new subfields to existing field |
| 793 |
push @$field, ( $row->[3], $row->[4] ); |
| 794 |
} |
| 795 |
} else { |
| 796 |
# insert first field |
| 797 |
$field = $row; |
| 798 |
} |
| 799 |
|
| 800 |
if (! $marc_repeatable_subfield->{ $fsf }) { |
| 801 |
# make step to next subfield |
| 802 |
$i = ($i + $u->{ $fsf } ) % ($len + 1); |
| 803 |
} |
| 804 |
} |
| 805 |
|
| 806 |
if ($#$field >= 0) { |
| 807 |
push @m, $field; |
| 808 |
warn "## saved/3 ", dump( $field ),$/ if ($debug); |
| 809 |
} |
| 810 |
|
| 811 |
return \@m; |
| 812 |
} |
| 813 |
|
| 814 |
=head2 _get_marc_leader |
| 815 |
|
| 816 |
Return leader from currently fetched record by L</_get_marc_fields> |
| 817 |
|
| 818 |
print WebPAC::Normalize::MARC::_get_marc_leader(); |
| 819 |
|
| 820 |
=cut |
| 821 |
|
| 822 |
sub _get_marc_leader { |
| 823 |
die "no fetch_pos, did you called _get_marc_fields first?" unless ( defined( $fetch_pos ) ); |
| 824 |
return $marc_leader->[ $fetch_pos ]; |
| 825 |
} |
| 826 |
|
| 827 |
=head2 _created_marc_records |
| 828 |
|
| 829 |
my $nr_records = _created_marc_records; |
| 830 |
|
| 831 |
=cut |
| 832 |
|
| 833 |
sub _created_marc_records { |
| 834 |
return $#{ $marc_record } + 1 if $marc_record; |
| 835 |
} |
| 836 |
|
| 837 |
1; |
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