1 |
package WebPAC::Normalize; |
2 |
|
3 |
use warnings; |
4 |
use strict; |
5 |
use Data::Dumper; |
6 |
use Storable; |
7 |
|
8 |
=head1 NAME |
9 |
|
10 |
WebPAC::Normalize - data mungling for normalisation |
11 |
|
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=head1 VERSION |
13 |
|
14 |
Version 0.01 |
15 |
|
16 |
=cut |
17 |
|
18 |
our $VERSION = '0.01'; |
19 |
|
20 |
=head1 SYNOPSIS |
21 |
|
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This package contains code that mungle data to produce normalized format. |
23 |
|
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It contains several assumptions: |
25 |
|
26 |
=over |
27 |
|
28 |
=item * |
29 |
|
30 |
format of fields is defined using C<v123^a> notation for repeatable fields |
31 |
or C<s123^a> for single (or first) value, where C<123> is field number and |
32 |
C<a> is subfield. |
33 |
|
34 |
=item * |
35 |
|
36 |
source data records (C<$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 |
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|
50 |
=item * |
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|
52 |
optional C<lookup{...}> will be then performed. See C<WebPAC::Lookups>. |
53 |
|
54 |
=item * |
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|
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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 |
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values are inserted in format. |
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|
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=back |
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|
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 |
|
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|
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|
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|
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=head1 FUNCTIONS |
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|
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=head2 new |
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|
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Create new normalisation object |
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|
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my $n = new WebPAC::Normalize::Something( |
76 |
filter => { |
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'filter_name_1' => sub { |
78 |
# filter code |
79 |
return length($_); |
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}, ... |
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}, |
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cache_data_structure => './cache/ds/', |
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lookup_regex => $lookup->regex, |
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); |
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|
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Parametar C<filter> defines user supplied snippets of perl code which can |
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be use with C<filter{...}> notation. |
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|
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Optional parameter C<cache_data_structure> defines path to directory |
90 |
in which cache file for C<data_structure> call will be created. |
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|
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Recommended parametar C<lookup_regex> is used to enable parsing of lookups |
93 |
in structures. |
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|
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=cut |
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|
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sub new { |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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|
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$self->setup_cache_dir( $self->{'cache_data_structure'} ); |
103 |
|
104 |
$self ? return $self : return undef; |
105 |
} |
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|
107 |
=head2 setup_cache_dir |
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|
109 |
Check if specified cache directory exist, and if not, disable caching. |
110 |
|
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$setup_cache_dir('./cache/ds/'); |
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|
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If you pass false or zero value to this function, it will disable |
114 |
cacheing. |
115 |
|
116 |
=cut |
117 |
|
118 |
sub setup_cache_dir { |
119 |
my $self = shift; |
120 |
|
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my $dir = shift; |
122 |
|
123 |
my $log = $self->_get_logger(); |
124 |
|
125 |
if ($dir) { |
126 |
my $msg; |
127 |
if (! -e $dir) { |
128 |
$msg = "doesn't exist"; |
129 |
} elsif (! -d $dir) { |
130 |
$msg = "is not directory"; |
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} elsif (! -w $dir) { |
132 |
$msg = "not writable"; |
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} |
134 |
|
135 |
if ($msg) { |
136 |
undef $self->{'cache_data_structure'}; |
137 |
$log->warn("cache_data_structure $dir $msg, disabling..."); |
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} else { |
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$log->debug("using cache dir $dir"); |
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} |
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} else { |
142 |
$log->debug("disabling cache"); |
143 |
undef $self->{'cache_data_structure'}; |
144 |
} |
145 |
} |
146 |
|
147 |
|
148 |
=head2 data_structure |
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|
150 |
Create in-memory data structure which represents normalized layout from |
151 |
C<conf/normalize/*.xml>. |
152 |
|
153 |
This structures are used to produce output. |
154 |
|
155 |
my @ds = $webpac->data_structure($rec); |
156 |
|
157 |
B<Note: historical oddity follows> |
158 |
|
159 |
This method will also set C<< $webpac->{'currnet_filename'} >> if there is |
160 |
C<< <filename> >> tag and C<< $webpac->{'headline'} >> if there is |
161 |
C<< <headline> >> tag. |
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|
163 |
=cut |
164 |
|
165 |
sub data_structure { |
166 |
my $self = shift; |
167 |
|
168 |
my $log = $self->_get_logger(); |
169 |
|
170 |
my $rec = shift; |
171 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
172 |
|
173 |
my $cache_file; |
174 |
|
175 |
if (my $cache_path = $self->{'cache_data_structure'}) { |
176 |
my $id = $rec->{'000'}; |
177 |
$id = $rec->{'000'}->[0] if ($id =~ m/^ARRAY/o); |
178 |
unless (defined($id)) { |
179 |
$log->warn("Can't use cache_data_structure on records without unique identifier in field 000"); |
180 |
undef $self->{'cache_data_structure'}; |
181 |
} else { |
182 |
$cache_file = "$cache_path/$id"; |
183 |
if (-r $cache_file) { |
184 |
my $ds_ref = retrieve($cache_file); |
185 |
if ($ds_ref) { |
186 |
$log->debug("cache hit: $cache_file"); |
187 |
my $ok = 1; |
188 |
foreach my $f (qw(current_filename headline)) { |
189 |
if ($ds_ref->{$f}) { |
190 |
$self->{$f} = $ds_ref->{$f}; |
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} else { |
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$ok = 0; |
193 |
} |
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}; |
195 |
if ($ok && $ds_ref->{'ds'}) { |
196 |
return @{ $ds_ref->{'ds'} }; |
197 |
} else { |
198 |
$log->warn("cache_data_structure $cache_path corrupt. Use rm $cache_path/* to re-create it on next run!"); |
199 |
undef $self->{'cache_data_structure'}; |
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} |
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} |
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} |
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} |
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} |
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|
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undef $self->{'currnet_filename'}; |
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undef $self->{'headline'}; |
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|
209 |
my @sorted_tags; |
210 |
if ($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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|
217 |
my @ds; |
218 |
|
219 |
$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
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|
221 |
foreach my $field (@sorted_tags) { |
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|
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my $row; |
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|
225 |
#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
226 |
|
227 |
foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
228 |
my $format = $tag->{'value'} || $tag->{'content'}; |
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|
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$log->debug("format: $format"); |
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|
232 |
my @v; |
233 |
if ($self->{'lookup_regex'} && $format =~ $self->{'lookup_regex'}) { |
234 |
@v = $self->fill_in_to_arr($rec,$format); |
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} else { |
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@v = $self->parse_to_arr($rec,$format); |
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} |
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next if (! @v); |
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|
240 |
if ($tag->{'sort'}) { |
241 |
@v = $self->sort_arr(@v); |
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} |
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|
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# use format? |
245 |
if ($tag->{'format_name'}) { |
246 |
@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
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} |
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|
249 |
if ($field eq 'filename') { |
250 |
$self->{'current_filename'} = join('',@v); |
251 |
$log->debug("filename: ",$self->{'current_filename'}); |
252 |
} elsif ($field eq 'headline') { |
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$self->{'headline'} .= join('',@v); |
254 |
$log->debug("headline: ",$self->{'headline'}); |
255 |
next; # don't return headline in data_structure! |
256 |
} |
257 |
|
258 |
# delimiter will join repeatable fields |
259 |
if ($tag->{'delimiter'}) { |
260 |
@v = ( join($tag->{'delimiter'}, @v) ); |
261 |
} |
262 |
|
263 |
# default types |
264 |
my @types = qw(display swish); |
265 |
# override by type attribute |
266 |
@types = ( $tag->{'type'} ) if ($tag->{'type'}); |
267 |
|
268 |
foreach my $type (@types) { |
269 |
# append to previous line? |
270 |
$log->debug("type: $type ",sub { join(" ",@v) }, $row->{'append'} || 'no append'); |
271 |
if ($tag->{'append'}) { |
272 |
|
273 |
# I will delimit appended part with |
274 |
# delimiter (or ,) |
275 |
my $d = $tag->{'delimiter'}; |
276 |
# default delimiter |
277 |
$d ||= " "; |
278 |
|
279 |
my $last = pop @{$row->{$type}}; |
280 |
$d = "" if (! $last); |
281 |
$last .= $d . join($d, @v); |
282 |
push @{$row->{$type}}, $last; |
283 |
|
284 |
} else { |
285 |
push @{$row->{$type}}, @v; |
286 |
} |
287 |
} |
288 |
|
289 |
|
290 |
} |
291 |
|
292 |
if ($row) { |
293 |
$row->{'tag'} = $field; |
294 |
|
295 |
# TODO: name_sigular, name_plural |
296 |
my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
297 |
$row->{'name'} = $name ? $self->_x($name) : $field; |
298 |
|
299 |
# post-sort all values in field |
300 |
if ($self->{'import_xml'}->{'indexer'}->{$field}->{'sort'}) { |
301 |
$log->warn("sort at field tag not implemented"); |
302 |
} |
303 |
|
304 |
push @ds, $row; |
305 |
|
306 |
$log->debug("row $field: ",sub { Dumper($row) }); |
307 |
} |
308 |
|
309 |
} |
310 |
|
311 |
if ($cache_file) { |
312 |
store { |
313 |
ds => \@ds, |
314 |
current_filename => $self->{'current_filename'}, |
315 |
headline => $self->{'headline'}, |
316 |
}, $cache_file; |
317 |
$log->debug("created storable cache file $cache_file"); |
318 |
} |
319 |
|
320 |
return @ds; |
321 |
|
322 |
} |
323 |
|
324 |
=head2 parse |
325 |
|
326 |
Perform smart parsing of string, skipping delimiters for fields which aren't |
327 |
defined. It can also eval code in format starting with C<eval{...}> and |
328 |
return output or nothing depending on eval code. |
329 |
|
330 |
my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
331 |
|
332 |
=cut |
333 |
|
334 |
sub parse { |
335 |
my $self = shift; |
336 |
|
337 |
my ($rec, $format_utf8, $i) = @_; |
338 |
|
339 |
return if (! $format_utf8); |
340 |
|
341 |
my $log = $self->_get_logger(); |
342 |
|
343 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
344 |
|
345 |
$i = 0 if (! $i); |
346 |
|
347 |
my $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
348 |
|
349 |
my @out; |
350 |
|
351 |
$log->debug("format: $format"); |
352 |
|
353 |
my $eval_code; |
354 |
# remove eval{...} from beginning |
355 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
356 |
|
357 |
my $filter_name; |
358 |
# remove filter{...} from beginning |
359 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
360 |
|
361 |
my $prefix; |
362 |
my $all_found=0; |
363 |
|
364 |
while ($format =~ s/^(.*?)(v|s)(\d+)(?:\^(\w))?//s) { |
365 |
|
366 |
my $del = $1 || ''; |
367 |
$prefix ||= $del if ($all_found == 0); |
368 |
|
369 |
# repeatable index |
370 |
my $r = $i; |
371 |
$r = 0 if (lc("$2") eq 's'); |
372 |
|
373 |
my $found = 0; |
374 |
my $tmp = $self->get_data(\$rec,$3,$4,$r,\$found); |
375 |
|
376 |
if ($found) { |
377 |
push @out, $del; |
378 |
push @out, $tmp; |
379 |
$all_found += $found; |
380 |
} |
381 |
} |
382 |
|
383 |
return if (! $all_found); |
384 |
|
385 |
my $out = join('',@out); |
386 |
|
387 |
if ($out) { |
388 |
# add rest of format (suffix) |
389 |
$out .= $format; |
390 |
|
391 |
# add prefix if not there |
392 |
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
393 |
|
394 |
$log->debug("result: $out"); |
395 |
} |
396 |
|
397 |
if ($eval_code) { |
398 |
my $eval = $self->fill_in($rec,$eval_code,$i) || return; |
399 |
$log->debug("about to eval{$eval} format: $out"); |
400 |
return if (! $self->_eval($eval)); |
401 |
} |
402 |
|
403 |
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
404 |
$log->debug("about to filter{$filter_name} format: $out"); |
405 |
$out = $self->{'filter'}->{$filter_name}->($out); |
406 |
return unless(defined($out)); |
407 |
$log->debug("filter result: $out"); |
408 |
} |
409 |
|
410 |
return $out; |
411 |
} |
412 |
|
413 |
=head2 parse_to_arr |
414 |
|
415 |
Similar to C<parse>, but returns array of all repeatable fields |
416 |
|
417 |
my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
418 |
|
419 |
=cut |
420 |
|
421 |
sub parse_to_arr { |
422 |
my $self = shift; |
423 |
|
424 |
my ($rec, $format_utf8) = @_; |
425 |
|
426 |
my $log = $self->_get_logger(); |
427 |
|
428 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
429 |
return if (! $format_utf8); |
430 |
|
431 |
my $i = 0; |
432 |
my @arr; |
433 |
|
434 |
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
435 |
push @arr, $v; |
436 |
} |
437 |
|
438 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
439 |
|
440 |
return @arr; |
441 |
} |
442 |
|
443 |
|
444 |
=head2 fill_in |
445 |
|
446 |
Workhourse of all: takes record from in-memory structure of database and |
447 |
strings with placeholders and returns string or array of with substituted |
448 |
values from record. |
449 |
|
450 |
my $text = $webpac->fill_in($rec,'v250^a'); |
451 |
|
452 |
Optional argument is ordinal number for repeatable fields. By default, |
453 |
it's assume to be first repeatable field (fields are perl array, so first |
454 |
element is 0). |
455 |
Following example will read second value from repeatable field. |
456 |
|
457 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
458 |
|
459 |
This function B<does not> perform parsing of format to inteligenty skip |
460 |
delimiters before fields which aren't used. |
461 |
|
462 |
This method will automatically decode UTF-8 string to local code page |
463 |
if needed. |
464 |
|
465 |
=cut |
466 |
|
467 |
sub fill_in { |
468 |
my $self = shift; |
469 |
|
470 |
my $log = $self->_get_logger(); |
471 |
|
472 |
my $rec = shift || $log->logconfess("need data record"); |
473 |
my $format = shift || $log->logconfess("need format to parse"); |
474 |
# iteration (for repeatable fields) |
475 |
my $i = shift || 0; |
476 |
|
477 |
$log->logdie("infitite loop in format $format") if ($i > ($self->{'max_mfn'} || 9999)); |
478 |
|
479 |
# FIXME remove for speedup? |
480 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
481 |
|
482 |
if (utf8::is_utf8($format)) { |
483 |
$format = $self->_x($format); |
484 |
} |
485 |
|
486 |
my $found = 0; |
487 |
|
488 |
my $eval_code; |
489 |
# remove eval{...} from beginning |
490 |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
491 |
|
492 |
my $filter_name; |
493 |
# remove filter{...} from beginning |
494 |
$filter_name = $1 if ($format =~ s/^filter{([^}]+)}//s); |
495 |
|
496 |
# do actual replacement of placeholders |
497 |
# repeatable fields |
498 |
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
499 |
# non-repeatable fields |
500 |
$format =~ s/s(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,0,\$found)/ges; |
501 |
|
502 |
if ($found) { |
503 |
$log->debug("format: $format"); |
504 |
if ($eval_code) { |
505 |
my $eval = $self->fill_in($rec,$eval_code,$i); |
506 |
return if (! $self->_eval($eval)); |
507 |
} |
508 |
if ($filter_name && $self->{'filter'}->{$filter_name}) { |
509 |
$log->debug("filter '$filter_name' for $format"); |
510 |
$format = $self->{'filter'}->{$filter_name}->($format); |
511 |
return unless(defined($format)); |
512 |
$log->debug("filter result: $format"); |
513 |
} |
514 |
# do we have lookups? |
515 |
if ($self->{'lookup'}) { |
516 |
return $self->lookup($format); |
517 |
} else { |
518 |
return $format; |
519 |
} |
520 |
} else { |
521 |
return; |
522 |
} |
523 |
} |
524 |
|
525 |
|
526 |
=head2 fill_in_to_arr |
527 |
|
528 |
Similar to C<fill_in>, but returns array of all repeatable fields. Usable |
529 |
for fields which have lookups, so they shouldn't be parsed but rather |
530 |
C<fill_id>ed. |
531 |
|
532 |
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]'); |
533 |
|
534 |
=cut |
535 |
|
536 |
sub fill_in_to_arr { |
537 |
my $self = shift; |
538 |
|
539 |
my ($rec, $format_utf8) = @_; |
540 |
|
541 |
my $log = $self->_get_logger(); |
542 |
|
543 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
544 |
return if (! $format_utf8); |
545 |
|
546 |
my $i = 0; |
547 |
my @arr; |
548 |
|
549 |
while (my @v = $self->fill_in($rec,$format_utf8,$i++)) { |
550 |
push @arr, @v; |
551 |
} |
552 |
|
553 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
554 |
|
555 |
return @arr; |
556 |
} |
557 |
|
558 |
|
559 |
=head2 get_data |
560 |
|
561 |
Returns value from record. |
562 |
|
563 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
564 |
|
565 |
Arguments are: |
566 |
record reference C<$rec>, |
567 |
field C<$f>, |
568 |
optional subfiled C<$sf>, |
569 |
index for repeatable values C<$i>. |
570 |
|
571 |
Optinal variable C<$found> will be incremeted if there |
572 |
is field. |
573 |
|
574 |
Returns value or empty string. |
575 |
|
576 |
=cut |
577 |
|
578 |
sub get_data { |
579 |
my $self = shift; |
580 |
|
581 |
my ($rec,$f,$sf,$i,$found) = @_; |
582 |
|
583 |
if ($$rec->{$f}) { |
584 |
return '' if (! $$rec->{$f}->[$i]); |
585 |
no strict 'refs'; |
586 |
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
587 |
$$found++ if (defined($$found)); |
588 |
return $$rec->{$f}->[$i]->{$sf}; |
589 |
} elsif ($$rec->{$f}->[$i]) { |
590 |
$$found++ if (defined($$found)); |
591 |
# it still might have subfield, just |
592 |
# not specified, so we'll dump all |
593 |
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
594 |
my $out; |
595 |
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
596 |
$out .= $$rec->{$f}->[$i]->{$k}." "; |
597 |
} |
598 |
return $out; |
599 |
} else { |
600 |
return $$rec->{$f}->[$i]; |
601 |
} |
602 |
} |
603 |
} else { |
604 |
return ''; |
605 |
} |
606 |
} |
607 |
|
608 |
|
609 |
=head2 apply_format |
610 |
|
611 |
Apply format specified in tag with C<format_name="name"> and |
612 |
C<format_delimiter=";;">. |
613 |
|
614 |
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
615 |
|
616 |
Formats can contain C<lookup{...}> if you need them. |
617 |
|
618 |
=cut |
619 |
|
620 |
sub apply_format { |
621 |
my $self = shift; |
622 |
|
623 |
my ($name,$delimiter,$data) = @_; |
624 |
|
625 |
my $log = $self->_get_logger(); |
626 |
|
627 |
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
628 |
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
629 |
return $data; |
630 |
} |
631 |
|
632 |
$log->warn("no delimiter for format $name") if (! $delimiter); |
633 |
|
634 |
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
635 |
|
636 |
my @data = split(/\Q$delimiter\E/, $data); |
637 |
|
638 |
my $out = sprintf($format, @data); |
639 |
$log->debug("using format $name [$format] on $data to produce: $out"); |
640 |
|
641 |
if ($self->{'lookup_regex'} && $out =~ $self->{'lookup_regex'}) { |
642 |
return $self->lookup($out); |
643 |
} else { |
644 |
return $out; |
645 |
} |
646 |
|
647 |
} |
648 |
|
649 |
=head2 sort_arr |
650 |
|
651 |
Sort array ignoring case and html in data |
652 |
|
653 |
my @sorted = $webpac->sort_arr(@unsorted); |
654 |
|
655 |
=cut |
656 |
|
657 |
sub sort_arr { |
658 |
my $self = shift; |
659 |
|
660 |
my $log = $self->_get_logger(); |
661 |
|
662 |
# FIXME add Schwartzian Transformation? |
663 |
|
664 |
my @sorted = sort { |
665 |
$a =~ s#<[^>]+/*>##; |
666 |
$b =~ s#<[^>]+/*>##; |
667 |
lc($b) cmp lc($a) |
668 |
} @_; |
669 |
$log->debug("sorted values: ",sub { join(", ",@sorted) }); |
670 |
|
671 |
return @sorted; |
672 |
} |
673 |
|
674 |
|
675 |
=head1 INTERNAL METHODS |
676 |
|
677 |
=head2 _sort_by_order |
678 |
|
679 |
Sort xml tags data structure accoding to C<order=""> attribute. |
680 |
|
681 |
=cut |
682 |
|
683 |
sub _sort_by_order { |
684 |
my $self = shift; |
685 |
|
686 |
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
687 |
$self->{'import_xml'}->{'indexer'}->{$a}; |
688 |
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
689 |
$self->{'import_xml'}->{'indexer'}->{$b}; |
690 |
|
691 |
return $va <=> $vb; |
692 |
} |
693 |
|
694 |
=head2 _x |
695 |
|
696 |
Convert strings from C<conf/normalize/*.xml> encoding into application |
697 |
specific encoding (optinally specified using C<code_page> to C<new> |
698 |
constructor). |
699 |
|
700 |
my $text = $n->_x('normalize text string'); |
701 |
|
702 |
This is a stub so that other modules doesn't have to implement it. |
703 |
|
704 |
=cut |
705 |
|
706 |
sub _x { |
707 |
my $self = shift; |
708 |
return shift; |
709 |
} |
710 |
|
711 |
|
712 |
=head1 AUTHOR |
713 |
|
714 |
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
715 |
|
716 |
=head1 COPYRIGHT & LICENSE |
717 |
|
718 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
719 |
|
720 |
This program is free software; you can redistribute it and/or modify it |
721 |
under the same terms as Perl itself. |
722 |
|
723 |
=cut |
724 |
|
725 |
1; # End of WebPAC::DB |