| 1 |
package WebPAC::Normalize; |
| 2 |
|
| 3 |
use warnings; |
| 4 |
use strict; |
| 5 |
use blib; |
| 6 |
use WebPAC::Common; |
| 7 |
use base 'WebPAC::Common'; |
| 8 |
use Data::Dumper; |
| 9 |
|
| 10 |
=head1 NAME |
| 11 |
|
| 12 |
WebPAC::Normalize - data mungling for normalisation |
| 13 |
|
| 14 |
=head1 VERSION |
| 15 |
|
| 16 |
Version 0.08 |
| 17 |
|
| 18 |
=cut |
| 19 |
|
| 20 |
our $VERSION = '0.08'; |
| 21 |
|
| 22 |
=head1 SYNOPSIS |
| 23 |
|
| 24 |
This package contains code that mungle data to produce normalized format. |
| 25 |
|
| 26 |
It contains several assumptions: |
| 27 |
|
| 28 |
=over |
| 29 |
|
| 30 |
=item * |
| 31 |
|
| 32 |
format of fields is defined using C<v123^a> notation for repeatable fields |
| 33 |
or C<s123^a> for single (or first) value, where C<123> is field number and |
| 34 |
C<a> is subfield. |
| 35 |
|
| 36 |
=item * |
| 37 |
|
| 38 |
source data records (C<$rec>) have unique identifiers in field C<000> |
| 39 |
|
| 40 |
=item * |
| 41 |
|
| 42 |
optional C<eval{length('v123^a') == 3}> tag at B<beginning of format> will be |
| 43 |
perl code that is evaluated before producing output (value of field will be |
| 44 |
interpolated before that) |
| 45 |
|
| 46 |
=item * |
| 47 |
|
| 48 |
optional C<filter{filter_name}> at B<begining of format> will apply perl |
| 49 |
code defined as code ref on format after field substitution to producing |
| 50 |
output |
| 51 |
|
| 52 |
There is one built-in filter called C<regex> which can be use like this: |
| 53 |
|
| 54 |
filter{regex(s/foo/bar/)} |
| 55 |
|
| 56 |
=item * |
| 57 |
|
| 58 |
optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
| 59 |
|
| 60 |
=item * |
| 61 |
|
| 62 |
at end, optional C<format>s rules are resolved. Format rules are similar to |
| 63 |
C<sprintf> and can also contain C<lookup{...}> which is performed after |
| 64 |
values are inserted in format. |
| 65 |
|
| 66 |
=back |
| 67 |
|
| 68 |
This also describes order in which transformations are applied (eval, |
| 69 |
filter, lookup, format) which is important to undestand when deciding how to |
| 70 |
solve your data mungling and normalisation process. |
| 71 |
|
| 72 |
|
| 73 |
|
| 74 |
|
| 75 |
=head1 FUNCTIONS |
| 76 |
|
| 77 |
=head2 new |
| 78 |
|
| 79 |
Create new normalisation object |
| 80 |
|
| 81 |
my $n = new WebPAC::Normalize::Something( |
| 82 |
filter => { |
| 83 |
'filter_name_1' => sub { |
| 84 |
# filter code |
| 85 |
return length($_); |
| 86 |
}, ... |
| 87 |
}, |
| 88 |
db => $db_obj, |
| 89 |
lookup_regex => $lookup->regex, |
| 90 |
lookup => $lookup_obj, |
| 91 |
prefix => 'foobar', |
| 92 |
); |
| 93 |
|
| 94 |
Parametar C<filter> defines user supplied snippets of perl code which can |
| 95 |
be use with C<filter{...}> notation. |
| 96 |
|
| 97 |
C<prefix> is used to form filename for database record (to support multiple |
| 98 |
source files which are joined in one database). |
| 99 |
|
| 100 |
Recommended parametar C<lookup_regex> is used to enable parsing of lookups |
| 101 |
in structures. If you pass this parametar, you must also pass C<lookup> |
| 102 |
which is C<WebPAC::Lookup> object. |
| 103 |
|
| 104 |
=cut |
| 105 |
|
| 106 |
sub new { |
| 107 |
my $class = shift; |
| 108 |
my $self = {@_}; |
| 109 |
bless($self, $class); |
| 110 |
|
| 111 |
my $r = $self->{'lookup_regex'} ? 1 : 0; |
| 112 |
my $l = $self->{'lookup'} ? 1 : 0; |
| 113 |
|
| 114 |
my $log = $self->_get_logger(); |
| 115 |
|
| 116 |
# those two must be in pair |
| 117 |
if ( ($r & $l) != ($r || $l) ) { |
| 118 |
my $log = $self->_get_logger(); |
| 119 |
$log->logdie("lookup_regex and lookup must be in pair"); |
| 120 |
} |
| 121 |
|
| 122 |
$log->logdie("lookup must be WebPAC::Lookup object") if ($self->{'lookup'} && ! $self->{'lookup'}->isa('WebPAC::Lookup')); |
| 123 |
|
| 124 |
$log->warn("no prefix defined. please check that!") unless ($self->{'prefix'}); |
| 125 |
|
| 126 |
$log->debug("using lookup regex: ", $self->{lookup_regex}) if ($r && $l); |
| 127 |
|
| 128 |
if (! $self->{filter} || ! $self->{filter}->{regex}) { |
| 129 |
$log->debug("adding built-in filter regex"); |
| 130 |
$self->{filter}->{regex} = sub { |
| 131 |
my ($val, $regex) = @_; |
| 132 |
eval "\$val =~ $regex"; |
| 133 |
return $val; |
| 134 |
}; |
| 135 |
} |
| 136 |
|
| 137 |
$self ? return $self : return undef; |
| 138 |
} |
| 139 |
|
| 140 |
|
| 141 |
=head2 data_structure |
| 142 |
|
| 143 |
Create in-memory data structure which represents normalized layout from |
| 144 |
C<conf/normalize/*.xml>. |
| 145 |
|
| 146 |
This structures are used to produce output. |
| 147 |
|
| 148 |
my $ds = $webpac->data_structure($rec); |
| 149 |
|
| 150 |
=cut |
| 151 |
|
| 152 |
sub data_structure { |
| 153 |
my $self = shift; |
| 154 |
|
| 155 |
my $log = $self->_get_logger(); |
| 156 |
|
| 157 |
my $rec = shift; |
| 158 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
| 159 |
|
| 160 |
$log->debug("data_structure rec = ", sub { Dumper($rec) }); |
| 161 |
|
| 162 |
$log->logdie("need unique ID (mfn) in field 000 of record " . Dumper($rec) ) unless (defined($rec->{'000'})); |
| 163 |
|
| 164 |
my $id = $rec->{'000'}->[0] || $log->logdie("field 000 isn't array!"); |
| 165 |
|
| 166 |
my $cache_file; |
| 167 |
|
| 168 |
if ($self->{'db'}) { |
| 169 |
my $ds = $self->{'db'}->load_ds( id => $id, prefix => $self->{prefix} ); |
| 170 |
$log->debug("load_ds( rec = ", sub { Dumper($rec) }, ") = ", sub { Dumper($ds) }); |
| 171 |
return $ds if ($ds); |
| 172 |
$log->debug("cache miss, creating"); |
| 173 |
} |
| 174 |
|
| 175 |
my @sorted_tags; |
| 176 |
if ($self->{tags_by_order}) { |
| 177 |
@sorted_tags = @{$self->{tags_by_order}}; |
| 178 |
} else { |
| 179 |
@sorted_tags = sort { $self->_sort_by_order } keys %{$self->{'import_xml'}->{'indexer'}}; |
| 180 |
$self->{tags_by_order} = \@sorted_tags; |
| 181 |
} |
| 182 |
|
| 183 |
my $ds; |
| 184 |
|
| 185 |
$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
| 186 |
|
| 187 |
foreach my $field (@sorted_tags) { |
| 188 |
|
| 189 |
my $row; |
| 190 |
|
| 191 |
#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
| 192 |
|
| 193 |
foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
| 194 |
my $format; |
| 195 |
|
| 196 |
$log->logdie("expected tag HASH and got $tag") unless (ref($tag) eq 'HASH'); |
| 197 |
$format = $tag->{'value'} || $tag->{'content'}; |
| 198 |
|
| 199 |
my @v; |
| 200 |
if ($self->{'lookup_regex'} && $format =~ $self->{'lookup_regex'}) { |
| 201 |
@v = $self->_rec_to_arr($rec,$format,'fill_in'); |
| 202 |
} else { |
| 203 |
@v = $self->_rec_to_arr($rec,$format,'parse'); |
| 204 |
} |
| 205 |
if (! @v) { |
| 206 |
$log->debug("$field <",$self->{tag},"> format: $format no values"); |
| 207 |
next; |
| 208 |
} else { |
| 209 |
$log->debug("$field <",$self->{tag},"> format: $format values: ", join(",", @v)); |
| 210 |
} |
| 211 |
|
| 212 |
if ($tag->{'sort'}) { |
| 213 |
@v = $self->sort_arr(@v); |
| 214 |
} |
| 215 |
|
| 216 |
# use format? |
| 217 |
if ($tag->{'format_name'}) { |
| 218 |
@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
| 219 |
} |
| 220 |
|
| 221 |
# delimiter will join repeatable fields |
| 222 |
if ($tag->{'delimiter'}) { |
| 223 |
@v = ( join($tag->{'delimiter'}, @v) ); |
| 224 |
} |
| 225 |
|
| 226 |
# default types |
| 227 |
my @types = qw(display search); |
| 228 |
# override by type attribute |
| 229 |
@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
| 230 |
|
| 231 |
foreach my $type (@types) { |
| 232 |
# append to previous line? |
| 233 |
$log->debug("tag $field / $type [",sub { join(",",@v) }, "] ", $row->{'append'} || 'no append'); |
| 234 |
if ($tag->{'append'}) { |
| 235 |
|
| 236 |
# I will delimit appended part with |
| 237 |
# delimiter (or ,) |
| 238 |
my $d = $tag->{'delimiter'}; |
| 239 |
# default delimiter |
| 240 |
$d ||= " "; |
| 241 |
|
| 242 |
my $last = pop @{$row->{$type}}; |
| 243 |
$d = "" if (! $last); |
| 244 |
$last .= $d . join($d, @v); |
| 245 |
push @{$row->{$type}}, $last; |
| 246 |
|
| 247 |
} else { |
| 248 |
push @{$row->{$type}}, @v; |
| 249 |
} |
| 250 |
} |
| 251 |
|
| 252 |
|
| 253 |
} |
| 254 |
|
| 255 |
if ($row) { |
| 256 |
$row->{'tag'} = $field; |
| 257 |
|
| 258 |
# TODO: name_sigular, name_plural |
| 259 |
my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
| 260 |
my $row_name = $name ? $self->_x($name) : $field; |
| 261 |
|
| 262 |
# post-sort all values in field |
| 263 |
if ($self->{'import_xml'}->{'indexer'}->{$field}->{'sort'}) { |
| 264 |
$log->warn("sort at field tag not implemented"); |
| 265 |
} |
| 266 |
|
| 267 |
$ds->{$row_name} = $row; |
| 268 |
|
| 269 |
$log->debug("row $field: ",sub { Dumper($row) }); |
| 270 |
} |
| 271 |
|
| 272 |
} |
| 273 |
|
| 274 |
$self->{'db'}->save_ds( |
| 275 |
id => $id, |
| 276 |
ds => $ds, |
| 277 |
prefix => $self->{prefix}, |
| 278 |
) if ($self->{'db'}); |
| 279 |
|
| 280 |
$log->debug("ds: ", sub { Dumper($ds) }); |
| 281 |
|
| 282 |
$log->logconfess("data structure returned is not array any more!") if wantarray; |
| 283 |
|
| 284 |
return $ds; |
| 285 |
|
| 286 |
} |
| 287 |
|
| 288 |
=head2 parse |
| 289 |
|
| 290 |
Perform smart parsing of string, skipping delimiters for fields which aren't |
| 291 |
defined. It can also eval code in format starting with C<eval{...}> and |
| 292 |
return output or nothing depending on eval code. |
| 293 |
|
| 294 |
my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
| 295 |
|
| 296 |
Filters are implemented here. While simple form of filters looks like this: |
| 297 |
|
| 298 |
filter{name_of_filter} |
| 299 |
|
| 300 |
but, filters can also have variable number of parametars like this: |
| 301 |
|
| 302 |
filter{name_of_filter(param,param,param)} |
| 303 |
|
| 304 |
=cut |
| 305 |
|
| 306 |
my $warn_once; |
| 307 |
|
| 308 |
sub parse { |
| 309 |
my $self = shift; |
| 310 |
|
| 311 |
my ($rec, $format_utf8, $i, $rec_size) = @_; |
| 312 |
|
| 313 |
return if (! $format_utf8); |
| 314 |
|
| 315 |
my $log = $self->_get_logger(); |
| 316 |
|
| 317 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
| 318 |
|
| 319 |
$i = 0 if (! $i); |
| 320 |
|
| 321 |
my $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
| 322 |
|
| 323 |
my @out; |
| 324 |
|
| 325 |
$log->debug("format: $format [$i]"); |
| 326 |
|
| 327 |
my $eval_code; |
| 328 |
# remove eval{...} from beginning |
| 329 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
| 330 |
|
| 331 |
my $filter_name; |
| 332 |
# remove filter{...} from beginning |
| 333 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
| 334 |
|
| 335 |
# did we found any (att all) field from format in row? |
| 336 |
my $found_any; |
| 337 |
# prefix before first field which we preserve it $found_any |
| 338 |
my $prefix; |
| 339 |
|
| 340 |
my $f_step = 1; |
| 341 |
|
| 342 |
while ($format =~ s/^(.*?)(v|s)(\d+)(?:\^(\w))?//s) { |
| 343 |
|
| 344 |
my $del = $1 || ''; |
| 345 |
$prefix = $del if ($f_step == 1); |
| 346 |
|
| 347 |
my $fld_type = lc($2); |
| 348 |
|
| 349 |
# repeatable index |
| 350 |
my $r = $i; |
| 351 |
if ($fld_type eq 's') { |
| 352 |
if ($found_any->{'v'}) { |
| 353 |
$r = 0; |
| 354 |
} else { |
| 355 |
return; |
| 356 |
} |
| 357 |
} |
| 358 |
|
| 359 |
my $found = 0; |
| 360 |
my $tmp = $self->get_data(\$rec,$3,$4,$r,\$found,$rec_size); |
| 361 |
|
| 362 |
if ($found) { |
| 363 |
$found_any->{$fld_type} += $found; |
| 364 |
|
| 365 |
# we will skip delimiter before first occurence of field! |
| 366 |
push @out, $del unless($found_any->{$fld_type} == 1); |
| 367 |
push @out, $tmp; |
| 368 |
} |
| 369 |
$f_step++; |
| 370 |
} |
| 371 |
|
| 372 |
# test if any fields found? |
| 373 |
return if (! $found_any->{'v'} && ! $found_any->{'s'}); |
| 374 |
|
| 375 |
my $out = join('',@out); |
| 376 |
|
| 377 |
if ($out) { |
| 378 |
# add rest of format (suffix) |
| 379 |
$out .= $format; |
| 380 |
|
| 381 |
# add prefix if not there |
| 382 |
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
| 383 |
|
| 384 |
$log->debug("result: $out"); |
| 385 |
} |
| 386 |
|
| 387 |
if ($eval_code) { |
| 388 |
my $eval = $self->fill_in($rec,$eval_code,$i) || return; |
| 389 |
$log->debug("about to eval{$eval} format: $out"); |
| 390 |
return if (! $self->_eval($eval)); |
| 391 |
} |
| 392 |
|
| 393 |
if ($filter_name) { |
| 394 |
my @filter_args; |
| 395 |
if ($filter_name =~ s/(\w+)\((.*)\)/$1/) { |
| 396 |
@filter_args = split(/,/, $2); |
| 397 |
} |
| 398 |
if ($self->{'filter'}->{$filter_name}) { |
| 399 |
$log->debug("about to filter{$filter_name} format: $out with arguments: ", join(",", @filter_args)); |
| 400 |
unshift @filter_args, $out; |
| 401 |
$out = $self->{'filter'}->{$filter_name}->(@filter_args); |
| 402 |
return unless(defined($out)); |
| 403 |
$log->debug("filter result: $out"); |
| 404 |
} elsif (! $warn_once->{$filter_name}) { |
| 405 |
$log->warn("trying to use undefined filter $filter_name"); |
| 406 |
$warn_once->{$filter_name}++; |
| 407 |
} |
| 408 |
} |
| 409 |
|
| 410 |
return $out; |
| 411 |
} |
| 412 |
|
| 413 |
=head2 fill_in |
| 414 |
|
| 415 |
Workhourse of all: takes record from in-memory structure of database and |
| 416 |
strings with placeholders and returns string or array of with substituted |
| 417 |
values from record. |
| 418 |
|
| 419 |
my $text = $webpac->fill_in($rec,'v250^a'); |
| 420 |
|
| 421 |
Optional argument is ordinal number for repeatable fields. By default, |
| 422 |
it's assume to be first repeatable field (fields are perl array, so first |
| 423 |
element is 0). |
| 424 |
Following example will read second value from repeatable field. |
| 425 |
|
| 426 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
| 427 |
|
| 428 |
This function B<does not> perform parsing of format to inteligenty skip |
| 429 |
delimiters before fields which aren't used. |
| 430 |
|
| 431 |
This method will automatically decode UTF-8 string to local code page |
| 432 |
if needed. |
| 433 |
|
| 434 |
There is optional parametar C<$record_size> which can be used to get sizes of |
| 435 |
all C<field^subfield> combinations in this format. |
| 436 |
|
| 437 |
my $text = $webpac->fill_in($rec,'got: v900^a v900^x',0,\$rec_size); |
| 438 |
|
| 439 |
=cut |
| 440 |
|
| 441 |
sub fill_in { |
| 442 |
my $self = shift; |
| 443 |
|
| 444 |
my $log = $self->_get_logger(); |
| 445 |
|
| 446 |
my ($rec,$format,$i,$rec_size) = @_; |
| 447 |
|
| 448 |
$log->logconfess("need data record") unless ($rec); |
| 449 |
$log->logconfess("need format to parse") unless($format); |
| 450 |
|
| 451 |
# iteration (for repeatable fields) |
| 452 |
$i ||= 0; |
| 453 |
|
| 454 |
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
| 455 |
|
| 456 |
# FIXME remove for speedup? |
| 457 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
| 458 |
|
| 459 |
if (utf8::is_utf8($format)) { |
| 460 |
$format = $self->_x($format); |
| 461 |
} |
| 462 |
|
| 463 |
my $found = 0; |
| 464 |
my $just_single = 1; |
| 465 |
|
| 466 |
my $eval_code; |
| 467 |
# remove eval{...} from beginning |
| 468 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
| 469 |
|
| 470 |
my $filter_name; |
| 471 |
# remove filter{...} from beginning |
| 472 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
| 473 |
|
| 474 |
# do actual replacement of placeholders |
| 475 |
# repeatable fields |
| 476 |
if ($format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found,$rec_size)/ges) { |
| 477 |
$just_single = 0; |
| 478 |
} |
| 479 |
|
| 480 |
# non-repeatable fields |
| 481 |
if ($format =~ s/s(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,0,\$found,$rec_size)/ges) { |
| 482 |
return if ($i > 0 && $just_single); |
| 483 |
} |
| 484 |
|
| 485 |
if ($found) { |
| 486 |
$log->debug("format: $format"); |
| 487 |
if ($eval_code) { |
| 488 |
my $eval = $self->fill_in($rec,$eval_code,$i); |
| 489 |
return if (! $self->_eval($eval)); |
| 490 |
} |
| 491 |
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
| 492 |
$log->debug("filter '$filter_name' for $format"); |
| 493 |
$format = $self->{'filter'}->{$filter_name}->($format); |
| 494 |
return unless(defined($format)); |
| 495 |
$log->debug("filter result: $format"); |
| 496 |
} |
| 497 |
# do we have lookups? |
| 498 |
if ($self->{'lookup'}) { |
| 499 |
if ($self->{'lookup'}->can('lookup')) { |
| 500 |
my @lookup = $self->{lookup}->lookup($format); |
| 501 |
$log->debug("lookup $format", join(", ", @lookup)); |
| 502 |
return @lookup; |
| 503 |
} else { |
| 504 |
$log->warn("Have lookup object but can't invoke lookup method"); |
| 505 |
} |
| 506 |
} else { |
| 507 |
return $format; |
| 508 |
} |
| 509 |
} else { |
| 510 |
return; |
| 511 |
} |
| 512 |
} |
| 513 |
|
| 514 |
|
| 515 |
=head2 _rec_to_arr |
| 516 |
|
| 517 |
Similar to C<parse> and C<fill_in>, but returns array of all repeatable fields. Usable |
| 518 |
for fields which have lookups, so they shouldn't be parsed but rather |
| 519 |
C<paste>d or C<fill_id>ed. Last argument is name of operation: C<paste> or C<fill_in>. |
| 520 |
|
| 521 |
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]','paste'); |
| 522 |
|
| 523 |
=cut |
| 524 |
|
| 525 |
sub _rec_to_arr { |
| 526 |
my $self = shift; |
| 527 |
|
| 528 |
my ($rec, $format_utf8, $code) = @_; |
| 529 |
|
| 530 |
my $log = $self->_get_logger(); |
| 531 |
|
| 532 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
| 533 |
return if (! $format_utf8); |
| 534 |
|
| 535 |
$log->debug("using $code on $format_utf8"); |
| 536 |
|
| 537 |
my $i = 0; |
| 538 |
my $max = 0; |
| 539 |
my @arr; |
| 540 |
my $rec_size = {}; |
| 541 |
|
| 542 |
while ($i <= $max) { |
| 543 |
my @v = $self->$code($rec,$format_utf8,$i++,\$rec_size); |
| 544 |
if ($rec_size) { |
| 545 |
foreach my $f (keys %{ $rec_size }) { |
| 546 |
$max = $rec_size->{$f} if ($rec_size->{$f} > $max); |
| 547 |
} |
| 548 |
$log->debug("max set to $max"); |
| 549 |
undef $rec_size; |
| 550 |
} |
| 551 |
if (@v) { |
| 552 |
push @arr, @v; |
| 553 |
} else { |
| 554 |
push @arr, '' if ($max > $i); |
| 555 |
} |
| 556 |
} |
| 557 |
|
| 558 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
| 559 |
|
| 560 |
return @arr; |
| 561 |
} |
| 562 |
|
| 563 |
|
| 564 |
=head2 get_data |
| 565 |
|
| 566 |
Returns value from record. |
| 567 |
|
| 568 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found,\$rec_size); |
| 569 |
|
| 570 |
Required arguments are: |
| 571 |
|
| 572 |
=over 8 |
| 573 |
|
| 574 |
=item C<$rec> |
| 575 |
|
| 576 |
record reference |
| 577 |
|
| 578 |
=item C<$f> |
| 579 |
|
| 580 |
field |
| 581 |
|
| 582 |
=item C<$sf> |
| 583 |
|
| 584 |
optional subfield |
| 585 |
|
| 586 |
=item C<$i> |
| 587 |
|
| 588 |
index offset for repeatable values ( 0 ... $rec_size->{'400^a'} ) |
| 589 |
|
| 590 |
=item C<$found> |
| 591 |
|
| 592 |
optional variable that will be incremeted if preset |
| 593 |
|
| 594 |
=item C<$rec_size> |
| 595 |
|
| 596 |
hash to hold maximum occurances of C<field^subfield> combinations |
| 597 |
(which can be accessed using keys in same format) |
| 598 |
|
| 599 |
=back |
| 600 |
|
| 601 |
Returns value or empty string, updates C<$found> and C<rec_size> |
| 602 |
if present. |
| 603 |
|
| 604 |
=cut |
| 605 |
|
| 606 |
sub get_data { |
| 607 |
my $self = shift; |
| 608 |
|
| 609 |
my ($rec,$f,$sf,$i,$found,$cache) = @_; |
| 610 |
|
| 611 |
return '' unless ($$rec->{$f} && ref($$rec->{$f}) eq 'ARRAY'); |
| 612 |
|
| 613 |
if (defined($$cache)) { |
| 614 |
$$cache->{ $f . ( $sf ? '^' . $sf : '' ) } ||= scalar @{ $$rec->{$f} }; |
| 615 |
} |
| 616 |
|
| 617 |
return '' unless ($$rec->{$f}->[$i]); |
| 618 |
|
| 619 |
{ |
| 620 |
no strict 'refs'; |
| 621 |
if (defined($sf)) { |
| 622 |
$$found++ if (defined($$found) && $$rec->{$f}->[$i]->{$sf}); |
| 623 |
return $$rec->{$f}->[$i]->{$sf}; |
| 624 |
} else { |
| 625 |
$$found++ if (defined($$found)); |
| 626 |
# it still might have subfields, just |
| 627 |
# not specified, so we'll dump some debug info |
| 628 |
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
| 629 |
my $out; |
| 630 |
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
| 631 |
$out .= '$' . $k .':' . $$rec->{$f}->[$i]->{$k}." "; |
| 632 |
} |
| 633 |
return $out; |
| 634 |
} else { |
| 635 |
return $$rec->{$f}->[$i]; |
| 636 |
} |
| 637 |
} |
| 638 |
} |
| 639 |
} |
| 640 |
|
| 641 |
|
| 642 |
=head2 apply_format |
| 643 |
|
| 644 |
Apply format specified in tag with C<format_name="name"> and |
| 645 |
C<format_delimiter=";;">. |
| 646 |
|
| 647 |
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
| 648 |
|
| 649 |
Formats can contain C<lookup{...}> if you need them. |
| 650 |
|
| 651 |
=cut |
| 652 |
|
| 653 |
sub apply_format { |
| 654 |
my $self = shift; |
| 655 |
|
| 656 |
my ($name,$delimiter,$data) = @_; |
| 657 |
|
| 658 |
my $log = $self->_get_logger(); |
| 659 |
|
| 660 |
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
| 661 |
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
| 662 |
return $data; |
| 663 |
} |
| 664 |
|
| 665 |
$log->warn("no delimiter for format $name") if (! $delimiter); |
| 666 |
|
| 667 |
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
| 668 |
|
| 669 |
my @data = split(/\Q$delimiter\E/, $data); |
| 670 |
|
| 671 |
my $out = sprintf($format, @data); |
| 672 |
$log->debug("using format $name [$format] on $data to produce: $out"); |
| 673 |
|
| 674 |
if ($self->{'lookup_regex'} && $out =~ $self->{'lookup_regex'}) { |
| 675 |
return $self->{'lookup'}->lookup($out); |
| 676 |
} else { |
| 677 |
return $out; |
| 678 |
} |
| 679 |
|
| 680 |
} |
| 681 |
|
| 682 |
=head2 sort_arr |
| 683 |
|
| 684 |
Sort array ignoring case and html in data |
| 685 |
|
| 686 |
my @sorted = $webpac->sort_arr(@unsorted); |
| 687 |
|
| 688 |
=cut |
| 689 |
|
| 690 |
sub sort_arr { |
| 691 |
my $self = shift; |
| 692 |
|
| 693 |
my $log = $self->_get_logger(); |
| 694 |
|
| 695 |
# FIXME add Schwartzian Transformation? |
| 696 |
|
| 697 |
my @sorted = sort { |
| 698 |
$a =~ s#<[^>]+/*>##; |
| 699 |
$b =~ s#<[^>]+/*>##; |
| 700 |
lc($b) cmp lc($a) |
| 701 |
} @_; |
| 702 |
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
| 703 |
|
| 704 |
return @sorted; |
| 705 |
} |
| 706 |
|
| 707 |
|
| 708 |
=head1 INTERNAL METHODS |
| 709 |
|
| 710 |
=head2 _sort_by_order |
| 711 |
|
| 712 |
Sort xml tags data structure accoding to C<order=""> attribute. |
| 713 |
|
| 714 |
=cut |
| 715 |
|
| 716 |
sub _sort_by_order { |
| 717 |
my $self = shift; |
| 718 |
|
| 719 |
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
| 720 |
$self->{'import_xml'}->{'indexer'}->{$a}; |
| 721 |
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
| 722 |
$self->{'import_xml'}->{'indexer'}->{$b}; |
| 723 |
|
| 724 |
return $va <=> $vb; |
| 725 |
} |
| 726 |
|
| 727 |
=head2 _x |
| 728 |
|
| 729 |
Convert strings from C<conf/normalize/*.xml> encoding into application |
| 730 |
specific encoding (optinally specified using C<code_page> to C<new> |
| 731 |
constructor). |
| 732 |
|
| 733 |
my $text = $n->_x('normalize text string'); |
| 734 |
|
| 735 |
This is a stub so that other modules doesn't have to implement it. |
| 736 |
|
| 737 |
=cut |
| 738 |
|
| 739 |
sub _x { |
| 740 |
my $self = shift; |
| 741 |
return shift; |
| 742 |
} |
| 743 |
|
| 744 |
|
| 745 |
=head1 AUTHOR |
| 746 |
|
| 747 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
| 748 |
|
| 749 |
=head1 COPYRIGHT & LICENSE |
| 750 |
|
| 751 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
| 752 |
|
| 753 |
This program is free software; you can redistribute it and/or modify it |
| 754 |
under the same terms as Perl itself. |
| 755 |
|
| 756 |
=cut |
| 757 |
|
| 758 |
1; # End of WebPAC::Normalize |
Parent Directory
| 
Revision Log