1 |
package WebPAC::Normalize; |
2 |
|
3 |
use warnings; |
4 |
use strict; |
5 |
use base 'WebPAC::Common'; |
6 |
use Data::Dumper; |
7 |
|
8 |
=head1 NAME |
9 |
|
10 |
WebPAC::Normalize - data mungling for normalisation |
11 |
|
12 |
=head1 VERSION |
13 |
|
14 |
Version 0.02 |
15 |
|
16 |
=cut |
17 |
|
18 |
our $VERSION = '0.02'; |
19 |
|
20 |
=head1 SYNOPSIS |
21 |
|
22 |
This package contains code that mungle data to produce normalized format. |
23 |
|
24 |
It contains several assumptions: |
25 |
|
26 |
=over |
27 |
|
28 |
=item * |
29 |
|
30 |
format of fields is defined using C<v123^a> notation for repeatable fields |
31 |
or C<s123^a> for single (or first) value, where C<123> is field number and |
32 |
C<a> is subfield. |
33 |
|
34 |
=item * |
35 |
|
36 |
source data records (C<$rec>) have unique identifiers in field C<000> |
37 |
|
38 |
=item * |
39 |
|
40 |
optional C<eval{length('v123^a') == 3}> tag at B<beginning of format> will be |
41 |
perl code that is evaluated before producing output (value of field will be |
42 |
interpolated before that) |
43 |
|
44 |
=item * |
45 |
|
46 |
optional C<filter{filter_name}> at B<begining of format> will apply perl |
47 |
code defined as code ref on format after field substitution to producing |
48 |
output |
49 |
|
50 |
=item * |
51 |
|
52 |
optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
53 |
|
54 |
=item * |
55 |
|
56 |
at end, optional C<format>s rules are resolved. Format rules are similar to |
57 |
C<sprintf> and can also contain C<lookup{...}> which is performed after |
58 |
values are inserted in format. |
59 |
|
60 |
=back |
61 |
|
62 |
This also describes order in which transformations are applied (eval, |
63 |
filter, lookup, format) which is important to undestand when deciding how to |
64 |
solve your data mungling and normalisation process. |
65 |
|
66 |
|
67 |
|
68 |
|
69 |
=head1 FUNCTIONS |
70 |
|
71 |
=head2 new |
72 |
|
73 |
Create new normalisation object |
74 |
|
75 |
my $n = new WebPAC::Normalize::Something( |
76 |
filter => { |
77 |
'filter_name_1' => sub { |
78 |
# filter code |
79 |
return length($_); |
80 |
}, ... |
81 |
}, |
82 |
db => $db_obj, |
83 |
lookup_regex => $lookup->regex, |
84 |
lookup => $lookup_obj, |
85 |
); |
86 |
|
87 |
Parametar C<filter> defines user supplied snippets of perl code which can |
88 |
be use with C<filter{...}> notation. |
89 |
|
90 |
Recommended parametar C<lookup_regex> is used to enable parsing of lookups |
91 |
in structures. If you pass this parametar, you must also pass C<lookup> |
92 |
which is C<WebPAC::Lookup> object. |
93 |
|
94 |
=cut |
95 |
|
96 |
sub new { |
97 |
my $class = shift; |
98 |
my $self = {@_}; |
99 |
bless($self, $class); |
100 |
|
101 |
my $r = $self->{'lookup_regex'} ? 1 : 0; |
102 |
my $l = $self->{'lookup'} ? 1 : 0; |
103 |
|
104 |
my $log = $self->_get_logger(); |
105 |
|
106 |
# those two must be in pair |
107 |
if ( ($r & $l) != ($r || $l) ) { |
108 |
my $log = $self->_get_logger(); |
109 |
$log->logdie("lookup_regex and lookup must be in pair"); |
110 |
} |
111 |
|
112 |
$log->logdie("lookup must be WebPAC::Lookup object") if ($self->{'lookup'} && ! $self->{'lookup'}->isa('WebPAC::Lookup')); |
113 |
|
114 |
$self ? return $self : return undef; |
115 |
} |
116 |
|
117 |
|
118 |
=head2 data_structure |
119 |
|
120 |
Create in-memory data structure which represents normalized layout from |
121 |
C<conf/normalize/*.xml>. |
122 |
|
123 |
This structures are used to produce output. |
124 |
|
125 |
my $ds = $webpac->data_structure($rec); |
126 |
|
127 |
B<Note: historical oddity follows> |
128 |
|
129 |
This method will also set C<< $webpac->{'currnet_filename'} >> if there is |
130 |
C<< <filename> >> tag and C<< $webpac->{'headline'} >> if there is |
131 |
C<< <headline> >> tag. |
132 |
|
133 |
=cut |
134 |
|
135 |
sub data_structure { |
136 |
my $self = shift; |
137 |
|
138 |
my $log = $self->_get_logger(); |
139 |
|
140 |
my $rec = shift; |
141 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
142 |
|
143 |
my $cache_file; |
144 |
|
145 |
if ($self->{'db'}) { |
146 |
my $ds = $self->{'db'}->load_ds($rec); |
147 |
$log->debug("load_ds( rec = ", sub { Dumper($rec) }, ") = ", sub { Dumper($ds) }); |
148 |
return $ds if ($ds); |
149 |
$log->debug("cache miss, creating"); |
150 |
} |
151 |
|
152 |
undef $self->{'currnet_filename'}; |
153 |
undef $self->{'headline'}; |
154 |
|
155 |
my @sorted_tags; |
156 |
if ($self->{tags_by_order}) { |
157 |
@sorted_tags = @{$self->{tags_by_order}}; |
158 |
} else { |
159 |
@sorted_tags = sort { $self->_sort_by_order } keys %{$self->{'import_xml'}->{'indexer'}}; |
160 |
$self->{tags_by_order} = \@sorted_tags; |
161 |
} |
162 |
|
163 |
my $ds; |
164 |
|
165 |
$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
166 |
|
167 |
foreach my $field (@sorted_tags) { |
168 |
|
169 |
my $row; |
170 |
|
171 |
#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
172 |
|
173 |
foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
174 |
my $format; |
175 |
|
176 |
$log->logdie("expected tag HASH and got $tag") unless (ref($tag) eq 'HASH'); |
177 |
$format = $tag->{'value'} || $tag->{'content'}; |
178 |
|
179 |
$log->debug("format: $format"); |
180 |
|
181 |
my @v; |
182 |
if ($self->{'lookup_regex'} && $format =~ $self->{'lookup_regex'}) { |
183 |
@v = $self->fill_in_to_arr($rec,$format); |
184 |
} else { |
185 |
@v = $self->parse_to_arr($rec,$format); |
186 |
} |
187 |
next if (! @v); |
188 |
|
189 |
if ($tag->{'sort'}) { |
190 |
@v = $self->sort_arr(@v); |
191 |
} |
192 |
|
193 |
# use format? |
194 |
if ($tag->{'format_name'}) { |
195 |
@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
196 |
} |
197 |
|
198 |
if ($field eq 'filename') { |
199 |
$self->{'current_filename'} = join('',@v); |
200 |
$log->debug("filename: ",$self->{'current_filename'}); |
201 |
} elsif ($field eq 'headline') { |
202 |
$self->{'headline'} .= join('',@v); |
203 |
$log->debug("headline: ",$self->{'headline'}); |
204 |
next; # don't return headline in data_structure! |
205 |
} |
206 |
|
207 |
# delimiter will join repeatable fields |
208 |
if ($tag->{'delimiter'}) { |
209 |
@v = ( join($tag->{'delimiter'}, @v) ); |
210 |
} |
211 |
|
212 |
# default types |
213 |
my @types = qw(display search); |
214 |
# override by type attribute |
215 |
@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
216 |
|
217 |
foreach my $type (@types) { |
218 |
# append to previous line? |
219 |
$log->debug("type: $type ",sub { join(" ",@v) }, $row->{'append'} || 'no append'); |
220 |
if ($tag->{'append'}) { |
221 |
|
222 |
# I will delimit appended part with |
223 |
# delimiter (or ,) |
224 |
my $d = $tag->{'delimiter'}; |
225 |
# default delimiter |
226 |
$d ||= " "; |
227 |
|
228 |
my $last = pop @{$row->{$type}}; |
229 |
$d = "" if (! $last); |
230 |
$last .= $d . join($d, @v); |
231 |
push @{$row->{$type}}, $last; |
232 |
|
233 |
} else { |
234 |
push @{$row->{$type}}, @v; |
235 |
} |
236 |
} |
237 |
|
238 |
|
239 |
} |
240 |
|
241 |
if ($row) { |
242 |
$row->{'tag'} = $field; |
243 |
|
244 |
# TODO: name_sigular, name_plural |
245 |
my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
246 |
my $row_name = $name ? $self->_x($name) : $field; |
247 |
|
248 |
# post-sort all values in field |
249 |
if ($self->{'import_xml'}->{'indexer'}->{$field}->{'sort'}) { |
250 |
$log->warn("sort at field tag not implemented"); |
251 |
} |
252 |
|
253 |
$ds->{$row_name} = $row; |
254 |
|
255 |
$log->debug("row $field: ",sub { Dumper($row) }); |
256 |
} |
257 |
|
258 |
} |
259 |
|
260 |
$log->logdie("there is no current_filename defined! Do you have filename tag in conf/normalize/?.xml") unless ($self->{'current_filename'}); |
261 |
|
262 |
$self->{'db'}->save_ds( |
263 |
ds => $ds, |
264 |
current_filename => $self->{'current_filename'}, |
265 |
headline => $self->{'headline'}, |
266 |
) if ($self->{'db'}); |
267 |
|
268 |
$log->debug("ds: ", sub { Dumper($ds) }); |
269 |
|
270 |
$log->logconfess("data structure returned is not array any more!") if wantarray; |
271 |
|
272 |
return $ds; |
273 |
|
274 |
} |
275 |
|
276 |
=head2 parse |
277 |
|
278 |
Perform smart parsing of string, skipping delimiters for fields which aren't |
279 |
defined. It can also eval code in format starting with C<eval{...}> and |
280 |
return output or nothing depending on eval code. |
281 |
|
282 |
my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
283 |
|
284 |
=cut |
285 |
|
286 |
sub parse { |
287 |
my $self = shift; |
288 |
|
289 |
my ($rec, $format_utf8, $i) = @_; |
290 |
|
291 |
return if (! $format_utf8); |
292 |
|
293 |
my $log = $self->_get_logger(); |
294 |
|
295 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
296 |
|
297 |
$i = 0 if (! $i); |
298 |
|
299 |
my $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
300 |
|
301 |
my @out; |
302 |
|
303 |
$log->debug("format: $format"); |
304 |
|
305 |
my $eval_code; |
306 |
# remove eval{...} from beginning |
307 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
308 |
|
309 |
my $filter_name; |
310 |
# remove filter{...} from beginning |
311 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
312 |
|
313 |
my $prefix; |
314 |
my $all_found=0; |
315 |
|
316 |
while ($format =~ s/^(.*?)(v|s)(\d+)(?:\^(\w))?//s) { |
317 |
|
318 |
my $del = $1 || ''; |
319 |
$prefix ||= $del if ($all_found == 0); |
320 |
|
321 |
# repeatable index |
322 |
my $r = $i; |
323 |
$r = 0 if (lc("$2") eq 's'); |
324 |
|
325 |
my $found = 0; |
326 |
my $tmp = $self->get_data(\$rec,$3,$4,$r,\$found); |
327 |
|
328 |
if ($found) { |
329 |
push @out, $del; |
330 |
push @out, $tmp; |
331 |
$all_found += $found; |
332 |
} |
333 |
} |
334 |
|
335 |
return if (! $all_found); |
336 |
|
337 |
my $out = join('',@out); |
338 |
|
339 |
if ($out) { |
340 |
# add rest of format (suffix) |
341 |
$out .= $format; |
342 |
|
343 |
# add prefix if not there |
344 |
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
345 |
|
346 |
$log->debug("result: $out"); |
347 |
} |
348 |
|
349 |
if ($eval_code) { |
350 |
my $eval = $self->fill_in($rec,$eval_code,$i) || return; |
351 |
$log->debug("about to eval{$eval} format: $out"); |
352 |
return if (! $self->_eval($eval)); |
353 |
} |
354 |
|
355 |
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
356 |
$log->debug("about to filter{$filter_name} format: $out"); |
357 |
$out = $self->{'filter'}->{$filter_name}->($out); |
358 |
return unless(defined($out)); |
359 |
$log->debug("filter result: $out"); |
360 |
} |
361 |
|
362 |
return $out; |
363 |
} |
364 |
|
365 |
=head2 parse_to_arr |
366 |
|
367 |
Similar to C<parse>, but returns array of all repeatable fields |
368 |
|
369 |
my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
370 |
|
371 |
=cut |
372 |
|
373 |
sub parse_to_arr { |
374 |
my $self = shift; |
375 |
|
376 |
my ($rec, $format_utf8) = @_; |
377 |
|
378 |
my $log = $self->_get_logger(); |
379 |
|
380 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
381 |
return if (! $format_utf8); |
382 |
|
383 |
my $i = 0; |
384 |
my @arr; |
385 |
|
386 |
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
387 |
push @arr, $v; |
388 |
} |
389 |
|
390 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
391 |
|
392 |
return @arr; |
393 |
} |
394 |
|
395 |
|
396 |
=head2 fill_in |
397 |
|
398 |
Workhourse of all: takes record from in-memory structure of database and |
399 |
strings with placeholders and returns string or array of with substituted |
400 |
values from record. |
401 |
|
402 |
my $text = $webpac->fill_in($rec,'v250^a'); |
403 |
|
404 |
Optional argument is ordinal number for repeatable fields. By default, |
405 |
it's assume to be first repeatable field (fields are perl array, so first |
406 |
element is 0). |
407 |
Following example will read second value from repeatable field. |
408 |
|
409 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
410 |
|
411 |
This function B<does not> perform parsing of format to inteligenty skip |
412 |
delimiters before fields which aren't used. |
413 |
|
414 |
This method will automatically decode UTF-8 string to local code page |
415 |
if needed. |
416 |
|
417 |
=cut |
418 |
|
419 |
sub fill_in { |
420 |
my $self = shift; |
421 |
|
422 |
my $log = $self->_get_logger(); |
423 |
|
424 |
my $rec = shift || $log->logconfess("need data record"); |
425 |
my $format = shift || $log->logconfess("need format to parse"); |
426 |
# iteration (for repeatable fields) |
427 |
my $i = shift || 0; |
428 |
|
429 |
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
430 |
|
431 |
# FIXME remove for speedup? |
432 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
433 |
|
434 |
if (utf8::is_utf8($format)) { |
435 |
$format = $self->_x($format); |
436 |
} |
437 |
|
438 |
my $found = 0; |
439 |
|
440 |
my $eval_code; |
441 |
# remove eval{...} from beginning |
442 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
443 |
|
444 |
my $filter_name; |
445 |
# remove filter{...} from beginning |
446 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
447 |
|
448 |
# do actual replacement of placeholders |
449 |
# repeatable fields |
450 |
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
451 |
# non-repeatable fields |
452 |
$format =~ s/s(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,0,\$found)/ges; |
453 |
|
454 |
if ($found) { |
455 |
$log->debug("format: $format"); |
456 |
if ($eval_code) { |
457 |
my $eval = $self->fill_in($rec,$eval_code,$i); |
458 |
return if (! $self->_eval($eval)); |
459 |
} |
460 |
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
461 |
$log->debug("filter '$filter_name' for $format"); |
462 |
$format = $self->{'filter'}->{$filter_name}->($format); |
463 |
return unless(defined($format)); |
464 |
$log->debug("filter result: $format"); |
465 |
} |
466 |
# do we have lookups? |
467 |
if ($self->{'lookup'}) { |
468 |
if ($self->{'lookup'}->can('lookup')) { |
469 |
return $self->{'lookup'}->lookup($format); |
470 |
} else { |
471 |
$log->warn("Have lookup object but can't invoke lookup method"); |
472 |
} |
473 |
} else { |
474 |
return $format; |
475 |
} |
476 |
} else { |
477 |
return; |
478 |
} |
479 |
} |
480 |
|
481 |
|
482 |
=head2 fill_in_to_arr |
483 |
|
484 |
Similar to C<fill_in>, but returns array of all repeatable fields. Usable |
485 |
for fields which have lookups, so they shouldn't be parsed but rather |
486 |
C<fill_id>ed. |
487 |
|
488 |
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]'); |
489 |
|
490 |
=cut |
491 |
|
492 |
sub fill_in_to_arr { |
493 |
my $self = shift; |
494 |
|
495 |
my ($rec, $format_utf8) = @_; |
496 |
|
497 |
my $log = $self->_get_logger(); |
498 |
|
499 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
500 |
return if (! $format_utf8); |
501 |
|
502 |
my $i = 0; |
503 |
my @arr; |
504 |
|
505 |
while (my @v = $self->fill_in($rec,$format_utf8,$i++)) { |
506 |
push @arr, @v; |
507 |
} |
508 |
|
509 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
510 |
|
511 |
return @arr; |
512 |
} |
513 |
|
514 |
|
515 |
=head2 get_data |
516 |
|
517 |
Returns value from record. |
518 |
|
519 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
520 |
|
521 |
Arguments are: |
522 |
record reference C<$rec>, |
523 |
field C<$f>, |
524 |
optional subfiled C<$sf>, |
525 |
index for repeatable values C<$i>. |
526 |
|
527 |
Optinal variable C<$found> will be incremeted if there |
528 |
is field. |
529 |
|
530 |
Returns value or empty string. |
531 |
|
532 |
=cut |
533 |
|
534 |
sub get_data { |
535 |
my $self = shift; |
536 |
|
537 |
my ($rec,$f,$sf,$i,$found) = @_; |
538 |
|
539 |
if ($$rec->{$f}) { |
540 |
return '' if (! $$rec->{$f}->[$i]); |
541 |
no strict 'refs'; |
542 |
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
543 |
$$found++ if (defined($$found)); |
544 |
return $$rec->{$f}->[$i]->{$sf}; |
545 |
} elsif (! $sf && $$rec->{$f}->[$i]) { |
546 |
$$found++ if (defined($$found)); |
547 |
# it still might have subfield, just |
548 |
# not specified, so we'll dump all |
549 |
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
550 |
my $out; |
551 |
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
552 |
$out .= $$rec->{$f}->[$i]->{$k}." "; |
553 |
} |
554 |
return $out; |
555 |
} else { |
556 |
return $$rec->{$f}->[$i]; |
557 |
} |
558 |
} else { |
559 |
return ''; |
560 |
} |
561 |
} else { |
562 |
return ''; |
563 |
} |
564 |
} |
565 |
|
566 |
|
567 |
=head2 apply_format |
568 |
|
569 |
Apply format specified in tag with C<format_name="name"> and |
570 |
C<format_delimiter=";;">. |
571 |
|
572 |
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
573 |
|
574 |
Formats can contain C<lookup{...}> if you need them. |
575 |
|
576 |
=cut |
577 |
|
578 |
sub apply_format { |
579 |
my $self = shift; |
580 |
|
581 |
my ($name,$delimiter,$data) = @_; |
582 |
|
583 |
my $log = $self->_get_logger(); |
584 |
|
585 |
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
586 |
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
587 |
return $data; |
588 |
} |
589 |
|
590 |
$log->warn("no delimiter for format $name") if (! $delimiter); |
591 |
|
592 |
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
593 |
|
594 |
my @data = split(/\Q$delimiter\E/, $data); |
595 |
|
596 |
my $out = sprintf($format, @data); |
597 |
$log->debug("using format $name [$format] on $data to produce: $out"); |
598 |
|
599 |
if ($self->{'lookup_regex'} && $out =~ $self->{'lookup_regex'}) { |
600 |
return $self->{'lookup'}->lookup($out); |
601 |
} else { |
602 |
return $out; |
603 |
} |
604 |
|
605 |
} |
606 |
|
607 |
=head2 sort_arr |
608 |
|
609 |
Sort array ignoring case and html in data |
610 |
|
611 |
my @sorted = $webpac->sort_arr(@unsorted); |
612 |
|
613 |
=cut |
614 |
|
615 |
sub sort_arr { |
616 |
my $self = shift; |
617 |
|
618 |
my $log = $self->_get_logger(); |
619 |
|
620 |
# FIXME add Schwartzian Transformation? |
621 |
|
622 |
my @sorted = sort { |
623 |
$a =~ s#<[^>]+/*>##; |
624 |
$b =~ s#<[^>]+/*>##; |
625 |
lc($b) cmp lc($a) |
626 |
} @_; |
627 |
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
628 |
|
629 |
return @sorted; |
630 |
} |
631 |
|
632 |
|
633 |
=head1 INTERNAL METHODS |
634 |
|
635 |
=head2 _sort_by_order |
636 |
|
637 |
Sort xml tags data structure accoding to C<order=""> attribute. |
638 |
|
639 |
=cut |
640 |
|
641 |
sub _sort_by_order { |
642 |
my $self = shift; |
643 |
|
644 |
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
645 |
$self->{'import_xml'}->{'indexer'}->{$a}; |
646 |
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
647 |
$self->{'import_xml'}->{'indexer'}->{$b}; |
648 |
|
649 |
return $va <=> $vb; |
650 |
} |
651 |
|
652 |
=head2 _x |
653 |
|
654 |
Convert strings from C<conf/normalize/*.xml> encoding into application |
655 |
specific encoding (optinally specified using C<code_page> to C<new> |
656 |
constructor). |
657 |
|
658 |
my $text = $n->_x('normalize text string'); |
659 |
|
660 |
This is a stub so that other modules doesn't have to implement it. |
661 |
|
662 |
=cut |
663 |
|
664 |
sub _x { |
665 |
my $self = shift; |
666 |
return shift; |
667 |
} |
668 |
|
669 |
|
670 |
=head1 AUTHOR |
671 |
|
672 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
673 |
|
674 |
=head1 COPYRIGHT & LICENSE |
675 |
|
676 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
677 |
|
678 |
This program is free software; you can redistribute it and/or modify it |
679 |
under the same terms as Perl itself. |
680 |
|
681 |
=cut |
682 |
|
683 |
1; # End of WebPAC::DB |