1 |
dpavlin |
354 |
package WebPAC; |
2 |
dpavlin |
352 |
|
3 |
|
|
use Carp; |
4 |
dpavlin |
353 |
use Text::Iconv; |
5 |
|
|
use Config::IniFiles; |
6 |
dpavlin |
363 |
use XML::Simple; |
7 |
dpavlin |
352 |
|
8 |
dpavlin |
358 |
use Data::Dumper; |
9 |
|
|
|
10 |
dpavlin |
352 |
=head1 NAME |
11 |
|
|
|
12 |
dpavlin |
354 |
WebPAC - base class for WebPAC |
13 |
dpavlin |
352 |
|
14 |
|
|
=head1 DESCRIPTION |
15 |
|
|
|
16 |
dpavlin |
354 |
This module implements methods used by WebPAC. |
17 |
dpavlin |
352 |
|
18 |
|
|
=head1 METHODS |
19 |
|
|
|
20 |
|
|
=head2 new |
21 |
|
|
|
22 |
dpavlin |
354 |
This will create new instance of WebPAC using configuration specified by C<config_file>. |
23 |
dpavlin |
352 |
|
24 |
dpavlin |
354 |
my $webpac = new WebPAC( |
25 |
dpavlin |
352 |
config_file => 'name.conf', |
26 |
|
|
[code_page => 'ISO-8859-2',] |
27 |
|
|
); |
28 |
|
|
|
29 |
|
|
Default C<code_page> is C<ISO-8859-2>. |
30 |
|
|
|
31 |
dpavlin |
353 |
It will also read configuration files |
32 |
|
|
C<global.conf> (used by indexer and Web font-end) |
33 |
|
|
and configuration file specified by C<config_file> |
34 |
|
|
which describes databases to be indexed. |
35 |
|
|
|
36 |
dpavlin |
352 |
=cut |
37 |
|
|
|
38 |
dpavlin |
363 |
# mapping between data type and tag which specify |
39 |
|
|
# format in XML file |
40 |
|
|
my %type2tag = ( |
41 |
|
|
'isis' => 'isis', |
42 |
|
|
# 'excel' => 'column', |
43 |
|
|
# 'marc' => 'marc', |
44 |
|
|
# 'feed' => 'feed' |
45 |
|
|
); |
46 |
|
|
|
47 |
dpavlin |
352 |
sub new { |
48 |
|
|
my $class = shift; |
49 |
|
|
my $self = {@_}; |
50 |
|
|
bless($self, $class); |
51 |
|
|
|
52 |
|
|
# fill in default values |
53 |
|
|
# output codepage |
54 |
|
|
$self->{'code_page'} = 'ISO-8859-2' if (! $self->{'code_page'}); |
55 |
|
|
|
56 |
dpavlin |
353 |
# |
57 |
|
|
# read global.conf |
58 |
|
|
# |
59 |
dpavlin |
352 |
|
60 |
|
|
$self->{global_config_file} = new Config::IniFiles( -file => 'global.conf' ) || croak "can't open 'global.conf'"; |
61 |
|
|
|
62 |
|
|
# read global config parametars |
63 |
|
|
foreach my $var (qw( |
64 |
|
|
dbi_dbd |
65 |
|
|
dbi_dsn |
66 |
|
|
dbi_user |
67 |
|
|
dbi_passwd |
68 |
|
|
show_progress |
69 |
|
|
my_unac_filter |
70 |
|
|
)) { |
71 |
|
|
$self->{global_config}->{$var} = $self->{global_config_file}->val('global', $var); |
72 |
|
|
} |
73 |
|
|
|
74 |
dpavlin |
353 |
# |
75 |
|
|
# read indexer config file |
76 |
|
|
# |
77 |
dpavlin |
352 |
|
78 |
|
|
$self->{indexer_config_file} = new Config::IniFiles( -file => $self->{config_file} ) || croak "can't open '$self->{config_file}'"; |
79 |
|
|
|
80 |
|
|
return $self; |
81 |
|
|
} |
82 |
|
|
|
83 |
|
|
=head2 open_isis |
84 |
|
|
|
85 |
|
|
Open CDS/ISIS database using OpenIsis module and read all records to memory. |
86 |
|
|
|
87 |
|
|
$webpac->open_isis( |
88 |
|
|
filename => '/data/ISIS/ISIS', |
89 |
|
|
code_page => '852', |
90 |
|
|
limit_mfn => '500', |
91 |
|
|
lookup => [ ... ], |
92 |
|
|
); |
93 |
|
|
|
94 |
|
|
By default, ISIS code page is assumed to be C<852>. |
95 |
|
|
|
96 |
dpavlin |
353 |
If optional parametar C<limit_mfn> is set, it will read just 500 records |
97 |
|
|
from database in example above. |
98 |
dpavlin |
352 |
|
99 |
|
|
Returns number of last record read into memory (size of database, really). |
100 |
|
|
|
101 |
|
|
C<lookup> argument is an array of lookups to create. Each lookup must have C<key> and |
102 |
|
|
C<val>. Optional parametar C<eval> is perl code to evaluate before storing |
103 |
|
|
value in index. |
104 |
|
|
|
105 |
|
|
lookup => [ |
106 |
|
|
{ 'key' => 'd:v900', 'val' => 'v250^a' }, |
107 |
|
|
{ 'eval' => '"v901^a" eq "Podruèje"', |
108 |
|
|
'key' => 'pa:v561^4:v562^4:v461^1', |
109 |
|
|
'val' => 'v900' }, |
110 |
|
|
] |
111 |
|
|
|
112 |
|
|
=cut |
113 |
|
|
|
114 |
|
|
sub open_isis { |
115 |
|
|
my $self = shift; |
116 |
|
|
my $arg = {@_}; |
117 |
|
|
|
118 |
|
|
croak "need filename" if (! $arg->{'filename'}); |
119 |
|
|
my $code_page = $arg->{'code_page'} || '852'; |
120 |
|
|
|
121 |
dpavlin |
353 |
use OpenIsis; |
122 |
|
|
|
123 |
dpavlin |
352 |
#$self->{'isis_code_page'} = $code_page; |
124 |
|
|
|
125 |
|
|
# create Text::Iconv object |
126 |
|
|
my $cp = Text::Iconv->new($code_page,$self->{'code_page'}); |
127 |
|
|
|
128 |
dpavlin |
363 |
print STDERR "reading ISIS database '",$arg->{'filename'},"'\n" if ($self->{'debug'}); |
129 |
|
|
|
130 |
dpavlin |
352 |
my $isis_db = OpenIsis::open($arg->{'filename'}); |
131 |
|
|
|
132 |
|
|
my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
133 |
|
|
|
134 |
dpavlin |
357 |
$maxmfn = $self->{limit_mfn} if ($self->{limit_mfn}); |
135 |
|
|
|
136 |
dpavlin |
363 |
print STDERR "processing $maxmfn records...\n" if ($self->{'debug'}); |
137 |
|
|
|
138 |
dpavlin |
352 |
# read database |
139 |
|
|
for (my $mfn = 1; $mfn <= $maxmfn; $mfn++) { |
140 |
|
|
|
141 |
|
|
# read record |
142 |
|
|
my $row = OpenIsis::read( $isis_db, $mfn ); |
143 |
|
|
foreach my $k (keys %{$row}) { |
144 |
|
|
if ($k ne "mfn") { |
145 |
|
|
foreach my $l (@{$row->{$k}}) { |
146 |
|
|
$l = $cp->convert($l); |
147 |
|
|
# has subfields? |
148 |
|
|
my $val; |
149 |
|
|
if ($l =~ m/\^/) { |
150 |
|
|
foreach my $t (split(/\^/,$l)) { |
151 |
|
|
next if (! $t); |
152 |
|
|
$val->{substr($t,0,1)} = substr($t,1); |
153 |
|
|
} |
154 |
|
|
} else { |
155 |
|
|
$val = $l; |
156 |
|
|
} |
157 |
|
|
|
158 |
|
|
push @{$self->{'data'}->{$mfn}->{$k}}, $val; |
159 |
|
|
} |
160 |
|
|
} |
161 |
|
|
|
162 |
|
|
} |
163 |
|
|
|
164 |
|
|
# create lookup |
165 |
dpavlin |
355 |
my $rec = $self->{'data'}->{$mfn}; |
166 |
|
|
$self->create_lookup($rec, @{$arg->{'lookup'}}); |
167 |
dpavlin |
352 |
|
168 |
|
|
} |
169 |
|
|
|
170 |
dpavlin |
362 |
$self->{'current_mfn'} = 1; |
171 |
|
|
|
172 |
dpavlin |
352 |
# store max mfn and return it. |
173 |
|
|
return $self->{'max_mfn'} = $maxmfn; |
174 |
|
|
} |
175 |
|
|
|
176 |
dpavlin |
362 |
=head2 fetch_rec |
177 |
|
|
|
178 |
|
|
Fetch next record from database. It will also display progress bar (once |
179 |
|
|
it's implemented, that is). |
180 |
|
|
|
181 |
|
|
my $rec = $webpac->fetch_rec; |
182 |
|
|
|
183 |
|
|
=cut |
184 |
|
|
|
185 |
|
|
sub fetch_rec { |
186 |
|
|
my $self = shift; |
187 |
|
|
|
188 |
|
|
my $mfn = $self->{'current_mfn'}++ || confess "it seems that you didn't load database!"; |
189 |
|
|
|
190 |
|
|
if ($mfn > $self->{'max_mfn'}) { |
191 |
|
|
$self->{'current_mfn'} = $self->{'max_mfn'}; |
192 |
|
|
return; |
193 |
|
|
} |
194 |
|
|
|
195 |
|
|
return $self->{'data'}->{$mfn}; |
196 |
|
|
} |
197 |
|
|
|
198 |
dpavlin |
363 |
=head2 open_import_xml |
199 |
|
|
|
200 |
|
|
Read file from C<import_xml/> directory and parse it. |
201 |
|
|
|
202 |
|
|
$webpac->open_import_xml(type => 'isis'); |
203 |
|
|
|
204 |
|
|
=cut |
205 |
|
|
|
206 |
|
|
sub open_import_xml { |
207 |
|
|
my $self = shift; |
208 |
|
|
|
209 |
|
|
my $arg = {@_}; |
210 |
|
|
confess "need type to load file from import_xml/" if (! $arg->{'type'}); |
211 |
|
|
|
212 |
|
|
my $type = $arg->{'type'}; |
213 |
|
|
|
214 |
|
|
my $type_base = $type; |
215 |
|
|
$type_base =~ s/_.*$//g; |
216 |
|
|
|
217 |
|
|
my $f = "./import_xml/$type.xml"; |
218 |
|
|
confess "import_xml file '$f' doesn't exist!" if (! -e "$f"); |
219 |
|
|
|
220 |
|
|
print STDERR "reading '$f'\n" if ($self->{'debug'}); |
221 |
|
|
|
222 |
|
|
$self->{'import_xml'} = XMLin($f, |
223 |
|
|
ForceArray => [ $type2tag{$type_base}, 'config', 'format' ], |
224 |
|
|
ForceContent => 1 |
225 |
|
|
); |
226 |
|
|
|
227 |
|
|
print Dumper($self->{'import_xml'}); |
228 |
|
|
|
229 |
|
|
} |
230 |
|
|
|
231 |
dpavlin |
355 |
=head2 create_lookup |
232 |
|
|
|
233 |
|
|
Create lookup from record using lookup definition. |
234 |
|
|
|
235 |
|
|
=cut |
236 |
|
|
|
237 |
|
|
sub create_lookup { |
238 |
|
|
my $self = shift; |
239 |
|
|
|
240 |
|
|
my $rec = shift || confess "need record to create lookup"; |
241 |
|
|
confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
242 |
|
|
|
243 |
|
|
foreach my $i (@_) { |
244 |
|
|
if ($i->{'eval'}) { |
245 |
|
|
my $eval = $self->fill_in($rec,$i->{'eval'}); |
246 |
|
|
my $key = $self->fill_in($rec,$i->{'key'}); |
247 |
|
|
my @val = $self->fill_in($rec,$i->{'val'}); |
248 |
|
|
if ($key && @val && eval $eval) { |
249 |
|
|
push @{$self->{'lookup'}->{$key}}, @val; |
250 |
|
|
} |
251 |
|
|
} else { |
252 |
|
|
my $key = $self->fill_in($rec,$i->{'key'}); |
253 |
|
|
my @val = $self->fill_in($rec,$i->{'val'}); |
254 |
|
|
if ($key && @val) { |
255 |
|
|
push @{$self->{'lookup'}->{$key}}, @val; |
256 |
|
|
} |
257 |
|
|
} |
258 |
|
|
} |
259 |
|
|
} |
260 |
|
|
|
261 |
dpavlin |
356 |
=head2 get_data |
262 |
|
|
|
263 |
|
|
Returns value from record. |
264 |
|
|
|
265 |
|
|
$self->get_data(\$rec,$f,$sf,$i,\$found); |
266 |
|
|
|
267 |
|
|
Arguments are: |
268 |
|
|
record reference C<$rec>, |
269 |
|
|
field C<$f>, |
270 |
|
|
optional subfiled C<$sf>, |
271 |
|
|
index for repeatable values C<$i>. |
272 |
|
|
|
273 |
|
|
Optinal variable C<$found> will be incremeted if thre |
274 |
|
|
is field. |
275 |
|
|
|
276 |
|
|
Returns value or empty string. |
277 |
|
|
|
278 |
|
|
=cut |
279 |
|
|
|
280 |
|
|
sub get_data { |
281 |
|
|
my $self = shift; |
282 |
|
|
|
283 |
|
|
my ($rec,$f,$sf,$i,$found) = @_; |
284 |
|
|
if ($$rec->{$f}) { |
285 |
|
|
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
286 |
|
|
$$found++ if (defined($$found)); |
287 |
|
|
return $$rec->{$f}->[$i]->{$sf}; |
288 |
|
|
} elsif ($$rec->{$f}->[$i]) { |
289 |
|
|
$$found++ if (defined($$found)); |
290 |
|
|
return $$rec->{$f}->[$i]; |
291 |
|
|
} |
292 |
|
|
} else { |
293 |
|
|
return ''; |
294 |
|
|
} |
295 |
|
|
} |
296 |
|
|
|
297 |
dpavlin |
352 |
=head2 fill_in |
298 |
|
|
|
299 |
|
|
Workhourse of all: takes record from in-memory structure of database and |
300 |
|
|
strings with placeholders and returns string or array of with substituted |
301 |
|
|
values from record. |
302 |
|
|
|
303 |
|
|
$webpac->fill_in($rec,'v250^a'); |
304 |
|
|
|
305 |
|
|
Optional argument is ordinal number for repeatable fields. By default, |
306 |
dpavlin |
353 |
it's assume to be first repeatable field (fields are perl array, so first |
307 |
|
|
element is 0). |
308 |
|
|
Following example will read second value from repeatable field. |
309 |
dpavlin |
352 |
|
310 |
dpavlin |
353 |
$webpac->fill_in($rec,'Title: v250^a',1); |
311 |
|
|
|
312 |
|
|
This function B<does not> perform parsing of format to inteligenty skip |
313 |
|
|
delimiters before fields which aren't used. |
314 |
|
|
|
315 |
dpavlin |
352 |
=cut |
316 |
|
|
|
317 |
|
|
sub fill_in { |
318 |
|
|
my $self = shift; |
319 |
|
|
|
320 |
|
|
my $rec = shift || confess "need data record"; |
321 |
|
|
my $format = shift || confess "need format to parse"; |
322 |
|
|
# iteration (for repeatable fields) |
323 |
|
|
my $i = shift || 0; |
324 |
|
|
|
325 |
|
|
# FIXME remove for speedup? |
326 |
dpavlin |
355 |
confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
327 |
dpavlin |
352 |
|
328 |
|
|
my $found = 0; |
329 |
|
|
|
330 |
dpavlin |
359 |
my $eval_code; |
331 |
|
|
# remove eval{...} from beginning |
332 |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
333 |
|
|
|
334 |
dpavlin |
352 |
# do actual replacement of placeholders |
335 |
dpavlin |
356 |
$format =~ s/v(\d+)(?:\^(\w))*/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
336 |
dpavlin |
352 |
|
337 |
dpavlin |
353 |
if ($found) { |
338 |
dpavlin |
359 |
if ($eval_code) { |
339 |
|
|
my $eval = $self->fill_in($rec,$eval_code,$i); |
340 |
|
|
return if (! eval $eval); |
341 |
|
|
} |
342 |
dpavlin |
353 |
# do we have lookups? |
343 |
|
|
if ($format =~ /\[[^\[\]]+\]/o) { |
344 |
|
|
return $self->lookup($format); |
345 |
|
|
} else { |
346 |
|
|
return $format; |
347 |
|
|
} |
348 |
dpavlin |
352 |
} else { |
349 |
|
|
return; |
350 |
|
|
} |
351 |
|
|
} |
352 |
|
|
|
353 |
|
|
=head2 lookup |
354 |
|
|
|
355 |
dpavlin |
355 |
Perform lookups on format supplied to it. |
356 |
dpavlin |
352 |
|
357 |
|
|
my $txt = $self->lookup('[v900]'); |
358 |
|
|
|
359 |
dpavlin |
355 |
Lookups can be nested (like C<[d:[a:[v900]]]>). |
360 |
|
|
|
361 |
dpavlin |
352 |
=cut |
362 |
|
|
|
363 |
|
|
sub lookup { |
364 |
|
|
my $self = shift; |
365 |
|
|
|
366 |
|
|
my $tmp = shift || confess "need format"; |
367 |
|
|
|
368 |
dpavlin |
353 |
if ($tmp =~ /\[[^\[\]]+\]/o) { |
369 |
dpavlin |
352 |
my @in = ( $tmp ); |
370 |
dpavlin |
353 |
#print "##lookup $tmp\n"; |
371 |
dpavlin |
352 |
my @out; |
372 |
|
|
while (my $f = shift @in) { |
373 |
|
|
if ($f =~ /\[([^\[\]]+)\]/) { |
374 |
|
|
my $k = $1; |
375 |
|
|
if ($self->{'lookup'}->{$k}) { |
376 |
dpavlin |
353 |
#print "## lookup key = $k\n"; |
377 |
dpavlin |
352 |
foreach my $nv (@{$self->{'lookup'}->{$k}}) { |
378 |
|
|
my $tmp2 = $f; |
379 |
|
|
$tmp2 =~ s/\[$k\]/$nv/g; |
380 |
|
|
push @in, $tmp2; |
381 |
dpavlin |
353 |
#print "## lookup in => $tmp2\n"; |
382 |
dpavlin |
352 |
} |
383 |
|
|
} else { |
384 |
|
|
undef $f; |
385 |
|
|
} |
386 |
|
|
} elsif ($f) { |
387 |
|
|
push @out, $f; |
388 |
dpavlin |
353 |
#print "## lookup out => $f\n"; |
389 |
dpavlin |
352 |
} |
390 |
|
|
} |
391 |
|
|
return @out; |
392 |
|
|
} else { |
393 |
|
|
return $tmp; |
394 |
|
|
} |
395 |
|
|
} |
396 |
|
|
|
397 |
dpavlin |
356 |
=head2 parse |
398 |
|
|
|
399 |
|
|
Perform smart parsing of string, skipping delimiters for fields which aren't |
400 |
|
|
defined. It can also eval code in format starting with C<eval{...}> and |
401 |
|
|
return output or nothing depending on eval code. |
402 |
|
|
|
403 |
|
|
$webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
404 |
|
|
|
405 |
|
|
=cut |
406 |
|
|
|
407 |
|
|
sub parse { |
408 |
|
|
my $self = shift; |
409 |
|
|
|
410 |
|
|
my ($rec, $format, $i) = @_; |
411 |
|
|
|
412 |
dpavlin |
358 |
confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
413 |
|
|
|
414 |
|
|
$i = 0 if (! $i); |
415 |
|
|
|
416 |
dpavlin |
356 |
my @out; |
417 |
|
|
|
418 |
|
|
my $eval_code; |
419 |
|
|
# remove eval{...} from beginning |
420 |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
421 |
|
|
|
422 |
dpavlin |
358 |
my $prefix; |
423 |
|
|
my $all_found=0; |
424 |
dpavlin |
356 |
|
425 |
dpavlin |
359 |
#print "## $format\n"; |
426 |
dpavlin |
358 |
while ($format =~ s/^(.*?)v(\d+)(?:\^(\w))*//s) { |
427 |
dpavlin |
359 |
#print "## [ $1 | $2 | $3 ] $format\n"; |
428 |
dpavlin |
356 |
|
429 |
dpavlin |
358 |
my $del = $1 || ''; |
430 |
dpavlin |
359 |
$prefix ||= $del if ($all_found == 0); |
431 |
dpavlin |
358 |
|
432 |
|
|
my $found = 0; |
433 |
|
|
my $tmp = $self->get_data(\$rec,$2,$3,$i,\$found); |
434 |
|
|
|
435 |
dpavlin |
356 |
if ($found) { |
436 |
dpavlin |
358 |
push @out, $del; |
437 |
|
|
push @out, $tmp; |
438 |
|
|
$all_found += $found; |
439 |
dpavlin |
356 |
} |
440 |
|
|
} |
441 |
|
|
|
442 |
dpavlin |
358 |
return if (! $all_found); |
443 |
dpavlin |
356 |
|
444 |
dpavlin |
358 |
my $out = join('',@out) . $format; |
445 |
|
|
|
446 |
|
|
# add prefix if not there |
447 |
|
|
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
448 |
|
|
|
449 |
dpavlin |
359 |
if ($eval_code) { |
450 |
|
|
my $eval = $self->fill_in($rec,$eval_code,$i); |
451 |
|
|
return if (! eval $eval); |
452 |
|
|
} |
453 |
|
|
|
454 |
dpavlin |
358 |
return $out; |
455 |
dpavlin |
356 |
} |
456 |
|
|
|
457 |
dpavlin |
352 |
1; |