1 |
dpavlin |
1 |
package WebPAC::Input; |
2 |
|
|
|
3 |
|
|
use warnings; |
4 |
|
|
use strict; |
5 |
|
|
|
6 |
dpavlin |
507 |
use blib; |
7 |
|
|
|
8 |
dpavlin |
487 |
use WebPAC::Common; |
9 |
dpavlin |
285 |
use base qw/WebPAC::Common/; |
10 |
dpavlin |
771 |
use Data::Dump qw/dump/; |
11 |
dpavlin |
624 |
use Encode qw/from_to/; |
12 |
dpavlin |
285 |
|
13 |
dpavlin |
1 |
=head1 NAME |
14 |
|
|
|
15 |
dpavlin |
286 |
WebPAC::Input - read different file formats into WebPAC |
16 |
dpavlin |
1 |
|
17 |
|
|
=head1 VERSION |
18 |
|
|
|
19 |
dpavlin |
823 |
Version 0.18 |
20 |
dpavlin |
1 |
|
21 |
|
|
=cut |
22 |
|
|
|
23 |
dpavlin |
823 |
our $VERSION = '0.18'; |
24 |
dpavlin |
1 |
|
25 |
|
|
=head1 SYNOPSIS |
26 |
|
|
|
27 |
dpavlin |
286 |
This module implements input as database which have fixed and known |
28 |
|
|
I<size> while indexing and single unique numeric identifier for database |
29 |
|
|
position ranging from 1 to I<size>. |
30 |
dpavlin |
1 |
|
31 |
dpavlin |
286 |
Simply, something that is indexed by unmber from 1 .. I<size>. |
32 |
|
|
|
33 |
|
|
Examples of such databases are CDS/ISIS files, MARC files, lines in |
34 |
|
|
text file, and so on. |
35 |
|
|
|
36 |
|
|
Specific file formats are implemented using low-level interface modules, |
37 |
|
|
located in C<WebPAC::Input::*> namespace which export C<open_db>, |
38 |
|
|
C<fetch_rec> and optional C<init> functions. |
39 |
|
|
|
40 |
dpavlin |
1 |
Perhaps a little code snippet. |
41 |
|
|
|
42 |
dpavlin |
597 |
use WebPAC::Input; |
43 |
dpavlin |
1 |
|
44 |
dpavlin |
597 |
my $db = WebPAC::Input->new( |
45 |
|
|
module => 'WebPAC::Input::ISIS', |
46 |
|
|
); |
47 |
dpavlin |
1 |
|
48 |
dpavlin |
597 |
$db->open( path => '/path/to/database' ); |
49 |
dpavlin |
416 |
print "database size: ",$db->size,"\n"; |
50 |
|
|
while (my $rec = $db->fetch) { |
51 |
|
|
# do something with $rec |
52 |
|
|
} |
53 |
dpavlin |
1 |
|
54 |
dpavlin |
286 |
|
55 |
|
|
|
56 |
dpavlin |
1 |
=head1 FUNCTIONS |
57 |
|
|
|
58 |
dpavlin |
3 |
=head2 new |
59 |
dpavlin |
1 |
|
60 |
dpavlin |
3 |
Create new input database object. |
61 |
|
|
|
62 |
dpavlin |
9 |
my $db = new WebPAC::Input( |
63 |
dpavlin |
286 |
module => 'WebPAC::Input::MARC', |
64 |
dpavlin |
585 |
encoding => 'ISO-8859-2', |
65 |
dpavlin |
416 |
recode => 'char pairs', |
66 |
dpavlin |
483 |
no_progress_bar => 1, |
67 |
dpavlin |
9 |
); |
68 |
dpavlin |
3 |
|
69 |
dpavlin |
597 |
C<module> is low-level file format module. See L<WebPAC::Input::ISIS> and |
70 |
dpavlin |
286 |
L<WebPAC::Input::MARC>. |
71 |
|
|
|
72 |
dpavlin |
585 |
Optional parametar C<encoding> specify application code page (which will be |
73 |
dpavlin |
9 |
used internally). This should probably be your terminal encoding, and by |
74 |
|
|
default, it C<ISO-8859-2>. |
75 |
|
|
|
76 |
dpavlin |
483 |
C<recode> is optional string constisting of character or words pairs that |
77 |
|
|
should be replaced in input stream. |
78 |
|
|
|
79 |
|
|
C<no_progress_bar> disables progress bar output on C<STDOUT> |
80 |
|
|
|
81 |
dpavlin |
285 |
This function will also call low-level C<init> if it exists with same |
82 |
|
|
parametars. |
83 |
|
|
|
84 |
dpavlin |
1 |
=cut |
85 |
|
|
|
86 |
dpavlin |
3 |
sub new { |
87 |
dpavlin |
285 |
my $class = shift; |
88 |
|
|
my $self = {@_}; |
89 |
dpavlin |
3 |
bless($self, $class); |
90 |
|
|
|
91 |
dpavlin |
285 |
my $log = $self->_get_logger; |
92 |
|
|
|
93 |
dpavlin |
585 |
$log->logconfess("code_page argument is not suppored any more. change it to encoding") if ($self->{lookup}); |
94 |
|
|
$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_ref") if ($self->{lookup}); |
95 |
dpavlin |
761 |
$log->logconfess("low_mem argument is not suppored any more. rewrite it to load_row and save_row") if ($self->{low_mem}); |
96 |
dpavlin |
585 |
|
97 |
dpavlin |
286 |
$log->logconfess("specify low-level file format module") unless ($self->{module}); |
98 |
dpavlin |
726 |
my $module_path = $self->{module}; |
99 |
|
|
$module_path =~ s#::#/#g; |
100 |
|
|
$module_path .= '.pm'; |
101 |
|
|
$log->debug("require low-level module $self->{module} from $module_path"); |
102 |
dpavlin |
289 |
|
103 |
dpavlin |
726 |
require $module_path; |
104 |
dpavlin |
286 |
|
105 |
dpavlin |
585 |
$self->{'encoding'} ||= 'ISO-8859-2'; |
106 |
dpavlin |
9 |
|
107 |
dpavlin |
3 |
$self ? return $self : return undef; |
108 |
dpavlin |
1 |
} |
109 |
|
|
|
110 |
dpavlin |
285 |
=head2 open |
111 |
|
|
|
112 |
|
|
This function will read whole database in memory and produce lookups. |
113 |
|
|
|
114 |
dpavlin |
761 |
my $store; # simple in-memory hash |
115 |
|
|
|
116 |
dpavlin |
286 |
$input->open( |
117 |
dpavlin |
285 |
path => '/path/to/database/file', |
118 |
dpavlin |
624 |
code_page => 'cp852', |
119 |
dpavlin |
286 |
limit => 500, |
120 |
|
|
offset => 6000, |
121 |
dpavlin |
506 |
stats => 1, |
122 |
dpavlin |
707 |
lookup_coderef => sub { |
123 |
|
|
my $rec = shift; |
124 |
|
|
# store lookups |
125 |
dpavlin |
585 |
}, |
126 |
dpavlin |
597 |
modify_records => { |
127 |
|
|
900 => { '^a' => { ' : ' => '^b' } }, |
128 |
|
|
901 => { '*' => { '^b' => ' ; ' } }, |
129 |
|
|
}, |
130 |
dpavlin |
636 |
modify_file => 'conf/modify/mapping.map', |
131 |
dpavlin |
761 |
save_row => sub { |
132 |
|
|
my $a = shift; |
133 |
|
|
$store->{ $a->{id} } = $a->{row}; |
134 |
|
|
}, |
135 |
|
|
load_row => sub { |
136 |
|
|
my $a = shift; |
137 |
|
|
return defined($store->{ $a->{id} }) && |
138 |
|
|
$store->{ $a->{id} }; |
139 |
|
|
}, |
140 |
|
|
|
141 |
dpavlin |
285 |
); |
142 |
|
|
|
143 |
dpavlin |
624 |
By default, C<code_page> is assumed to be C<cp852>. |
144 |
dpavlin |
285 |
|
145 |
dpavlin |
286 |
C<offset> is optional parametar to position at some offset before reading from database. |
146 |
dpavlin |
285 |
|
147 |
dpavlin |
286 |
C<limit> is optional parametar to read just C<limit> records from database |
148 |
dpavlin |
285 |
|
149 |
dpavlin |
506 |
C<stats> create optional report about usage of fields and subfields |
150 |
|
|
|
151 |
dpavlin |
707 |
C<lookup_coderef> is closure to called to save data into lookups |
152 |
dpavlin |
585 |
|
153 |
dpavlin |
597 |
C<modify_records> specify mapping from subfields to delimiters or from |
154 |
|
|
delimiters to subfields, as well as oprations on fields (if subfield is |
155 |
|
|
defined as C<*>. |
156 |
|
|
|
157 |
dpavlin |
636 |
C<modify_file> is alternative for C<modify_records> above which preserves order and offers |
158 |
|
|
(hopefully) simplier sintax than YAML or perl (see L</modify_file_regex>). This option |
159 |
|
|
overrides C<modify_records> if both exists for same input. |
160 |
|
|
|
161 |
dpavlin |
761 |
C<save_row> and C<load_row> are low-level implementation of store engine. Calling convention |
162 |
|
|
is documented in example above. |
163 |
|
|
|
164 |
dpavlin |
286 |
Returns size of database, regardless of C<offset> and C<limit> |
165 |
|
|
parametars, see also C<size>. |
166 |
dpavlin |
285 |
|
167 |
|
|
=cut |
168 |
|
|
|
169 |
|
|
sub open { |
170 |
|
|
my $self = shift; |
171 |
|
|
my $arg = {@_}; |
172 |
|
|
|
173 |
|
|
my $log = $self->_get_logger(); |
174 |
|
|
|
175 |
dpavlin |
585 |
$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_coderef") if ($arg->{lookup}); |
176 |
|
|
$log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) |
177 |
|
|
if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); |
178 |
|
|
|
179 |
dpavlin |
707 |
$log->debug( $arg->{lookup_coderef} ? '' : 'not ', "using lookup_coderef"); |
180 |
|
|
|
181 |
dpavlin |
285 |
$log->logcroak("need path") if (! $arg->{'path'}); |
182 |
dpavlin |
624 |
my $code_page = $arg->{'code_page'} || 'cp852'; |
183 |
dpavlin |
285 |
|
184 |
|
|
# store data in object |
185 |
dpavlin |
292 |
$self->{'input_code_page'} = $code_page; |
186 |
dpavlin |
286 |
foreach my $v (qw/path offset limit/) { |
187 |
dpavlin |
285 |
$self->{$v} = $arg->{$v} if ($arg->{$v}); |
188 |
|
|
} |
189 |
|
|
|
190 |
dpavlin |
761 |
if ($arg->{load_row} || $arg->{save_row}) { |
191 |
|
|
$log->logconfess("save_row and load_row must be defined in pair and be CODE") unless ( |
192 |
|
|
ref($arg->{load_row}) eq 'CODE' && |
193 |
|
|
ref($arg->{save_row}) eq 'CODE' |
194 |
|
|
); |
195 |
|
|
$self->{load_row} = $arg->{load_row}; |
196 |
|
|
$self->{save_row} = $arg->{save_row}; |
197 |
|
|
$log->debug("using load_row and save_row instead of in-memory hash"); |
198 |
|
|
} |
199 |
|
|
|
200 |
dpavlin |
416 |
my $filter_ref; |
201 |
dpavlin |
597 |
my $recode_regex; |
202 |
|
|
my $recode_map; |
203 |
dpavlin |
416 |
|
204 |
|
|
if ($self->{recode}) { |
205 |
|
|
my @r = split(/\s/, $self->{recode}); |
206 |
|
|
if ($#r % 2 != 1) { |
207 |
|
|
$log->logwarn("recode needs even number of elements (some number of valid pairs)"); |
208 |
|
|
} else { |
209 |
|
|
while (@r) { |
210 |
|
|
my $from = shift @r; |
211 |
|
|
my $to = shift @r; |
212 |
dpavlin |
597 |
$recode_map->{$from} = $to; |
213 |
dpavlin |
416 |
} |
214 |
|
|
|
215 |
dpavlin |
597 |
$recode_regex = join '|' => keys %{ $recode_map }; |
216 |
dpavlin |
416 |
|
217 |
dpavlin |
597 |
$log->debug("using recode regex: $recode_regex"); |
218 |
dpavlin |
416 |
} |
219 |
|
|
|
220 |
|
|
} |
221 |
|
|
|
222 |
dpavlin |
636 |
my $rec_regex; |
223 |
|
|
if (my $p = $arg->{modify_file}) { |
224 |
|
|
$log->debug("using modify_file $p"); |
225 |
|
|
$rec_regex = $self->modify_file_regexps( $p ); |
226 |
|
|
} elsif (my $h = $arg->{modify_records}) { |
227 |
dpavlin |
771 |
$log->debug("using modify_records ", sub { dump( $h ) }); |
228 |
dpavlin |
636 |
$rec_regex = $self->modify_record_regexps(%{ $h }); |
229 |
|
|
} |
230 |
dpavlin |
771 |
$log->debug("rec_regex: ", sub { dump($rec_regex) }) if ($rec_regex); |
231 |
dpavlin |
597 |
|
232 |
dpavlin |
726 |
my $class = $self->{module} || $log->logconfess("can't get low-level module name!"); |
233 |
|
|
|
234 |
|
|
my $ll_db = $class->new( |
235 |
dpavlin |
285 |
path => $arg->{path}, |
236 |
dpavlin |
624 |
# filter => sub { |
237 |
|
|
# my ($l,$f_nr) = @_; |
238 |
|
|
# return unless defined($l); |
239 |
|
|
# from_to($l, $code_page, $self->{'encoding'}); |
240 |
|
|
# $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
241 |
|
|
# return $l; |
242 |
|
|
# }, |
243 |
dpavlin |
523 |
%{ $arg }, |
244 |
dpavlin |
285 |
); |
245 |
|
|
|
246 |
dpavlin |
726 |
unless (defined($ll_db)) { |
247 |
dpavlin |
285 |
$log->logwarn("can't open database $arg->{path}, skipping..."); |
248 |
|
|
return; |
249 |
|
|
} |
250 |
|
|
|
251 |
dpavlin |
726 |
my $size = $ll_db->size; |
252 |
|
|
|
253 |
dpavlin |
285 |
unless ($size) { |
254 |
|
|
$log->logwarn("no records in database $arg->{path}, skipping..."); |
255 |
|
|
return; |
256 |
|
|
} |
257 |
|
|
|
258 |
dpavlin |
339 |
my $from_rec = 1; |
259 |
|
|
my $to_rec = $size; |
260 |
dpavlin |
285 |
|
261 |
dpavlin |
286 |
if (my $s = $self->{offset}) { |
262 |
dpavlin |
513 |
$log->debug("skipping to MFN $s"); |
263 |
dpavlin |
339 |
$from_rec = $s; |
264 |
dpavlin |
285 |
} else { |
265 |
dpavlin |
339 |
$self->{offset} = $from_rec; |
266 |
dpavlin |
285 |
} |
267 |
|
|
|
268 |
dpavlin |
286 |
if ($self->{limit}) { |
269 |
dpavlin |
301 |
$log->debug("limiting to ",$self->{limit}," records"); |
270 |
dpavlin |
339 |
$to_rec = $from_rec + $self->{limit} - 1; |
271 |
|
|
$to_rec = $size if ($to_rec > $size); |
272 |
dpavlin |
285 |
} |
273 |
|
|
|
274 |
|
|
# store size for later |
275 |
dpavlin |
339 |
$self->{size} = ($to_rec - $from_rec) ? ($to_rec - $from_rec + 1) : 0; |
276 |
dpavlin |
285 |
|
277 |
dpavlin |
585 |
$log->info("processing $self->{size}/$size records [$from_rec-$to_rec] convert $code_page -> $self->{encoding}", $self->{stats} ? ' [stats]' : ''); |
278 |
dpavlin |
285 |
|
279 |
|
|
# read database |
280 |
dpavlin |
339 |
for (my $pos = $from_rec; $pos <= $to_rec; $pos++) { |
281 |
dpavlin |
285 |
|
282 |
dpavlin |
286 |
$log->debug("position: $pos\n"); |
283 |
dpavlin |
285 |
|
284 |
dpavlin |
726 |
my $rec = $ll_db->fetch_rec($pos, sub { |
285 |
dpavlin |
799 |
my ($l,$f_nr,$debug) = @_; |
286 |
dpavlin |
624 |
# return unless defined($l); |
287 |
|
|
# return $l unless ($rec_regex && $f_nr); |
288 |
dpavlin |
285 |
|
289 |
dpavlin |
818 |
return unless ( defined($l) && defined($f_nr) ); |
290 |
|
|
|
291 |
dpavlin |
800 |
warn "-=> $f_nr ## |$l|\n" if ($debug); |
292 |
dpavlin |
625 |
$log->debug("-=> $f_nr ## $l"); |
293 |
|
|
|
294 |
dpavlin |
624 |
# codepage conversion and recode_regex |
295 |
dpavlin |
626 |
from_to($l, $code_page, $self->{'encoding'}); |
296 |
dpavlin |
624 |
$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
297 |
|
|
|
298 |
dpavlin |
619 |
# apply regexps |
299 |
|
|
if ($rec_regex && defined($rec_regex->{$f_nr})) { |
300 |
|
|
$log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); |
301 |
|
|
my $c = 0; |
302 |
|
|
foreach my $r (@{ $rec_regex->{$f_nr} }) { |
303 |
dpavlin |
626 |
my $old_l = $l; |
304 |
dpavlin |
800 |
$log->logconfess("expected regex in ", dump( $r )) unless defined($r->{regex}); |
305 |
|
|
eval '$l =~ ' . $r->{regex}; |
306 |
dpavlin |
626 |
if ($old_l ne $l) { |
307 |
dpavlin |
800 |
my $d = "|$old_l| -> |$l| "; # . $r->{regex}; |
308 |
|
|
$d .= ' +' . $r->{line} . ' ' . $r->{file} if defined($r->{line}); |
309 |
|
|
$d .= ' ' . $r->{debug} if defined($r->{debug}); |
310 |
|
|
$log->debug("MODIFY $d"); |
311 |
|
|
warn "*** $d\n" if ($debug); |
312 |
|
|
|
313 |
dpavlin |
626 |
} |
314 |
dpavlin |
619 |
$log->error("error applying regex: $r") if ($@); |
315 |
|
|
} |
316 |
|
|
} |
317 |
|
|
|
318 |
dpavlin |
800 |
$log->debug("<=- $f_nr ## |$l|"); |
319 |
dpavlin |
799 |
warn "<=- $f_nr ## $l\n" if ($debug); |
320 |
dpavlin |
619 |
return $l; |
321 |
|
|
}); |
322 |
|
|
|
323 |
dpavlin |
771 |
$log->debug(sub { dump($rec) }); |
324 |
dpavlin |
308 |
|
325 |
dpavlin |
285 |
if (! $rec) { |
326 |
dpavlin |
286 |
$log->warn("record $pos empty? skipping..."); |
327 |
dpavlin |
285 |
next; |
328 |
|
|
} |
329 |
|
|
|
330 |
|
|
# store |
331 |
dpavlin |
761 |
if ($self->{save_row}) { |
332 |
|
|
$self->{save_row}->({ |
333 |
|
|
id => $pos, |
334 |
|
|
row => $rec, |
335 |
|
|
}); |
336 |
dpavlin |
285 |
} else { |
337 |
dpavlin |
286 |
$self->{data}->{$pos} = $rec; |
338 |
dpavlin |
285 |
} |
339 |
|
|
|
340 |
|
|
# create lookup |
341 |
dpavlin |
585 |
$arg->{'lookup_coderef'}->( $rec ) if ($rec && $arg->{'lookup_coderef'}); |
342 |
dpavlin |
285 |
|
343 |
dpavlin |
506 |
# update counters for statistics |
344 |
|
|
if ($self->{stats}) { |
345 |
dpavlin |
593 |
|
346 |
dpavlin |
619 |
# fetch clean record with regexpes applied for statistics |
347 |
dpavlin |
726 |
my $rec = $ll_db->fetch_rec($pos); |
348 |
dpavlin |
619 |
|
349 |
dpavlin |
593 |
foreach my $fld (keys %{ $rec }) { |
350 |
dpavlin |
506 |
$self->{_stats}->{fld}->{ $fld }++; |
351 |
dpavlin |
593 |
|
352 |
|
|
$log->logdie("invalid record fild $fld, not ARRAY") |
353 |
|
|
unless (ref($rec->{ $fld }) eq 'ARRAY'); |
354 |
|
|
|
355 |
|
|
foreach my $row (@{ $rec->{$fld} }) { |
356 |
|
|
|
357 |
|
|
if (ref($row) eq 'HASH') { |
358 |
|
|
|
359 |
|
|
foreach my $sf (keys %{ $row }) { |
360 |
dpavlin |
619 |
next if ($sf eq 'subfields'); |
361 |
dpavlin |
593 |
$self->{_stats}->{sf}->{ $fld }->{ $sf }->{count}++; |
362 |
|
|
$self->{_stats}->{sf}->{ $fld }->{ $sf }->{repeatable}++ |
363 |
|
|
if (ref($row->{$sf}) eq 'ARRAY'); |
364 |
dpavlin |
506 |
} |
365 |
dpavlin |
593 |
|
366 |
|
|
} else { |
367 |
|
|
$self->{_stats}->{repeatable}->{ $fld }++; |
368 |
|
|
} |
369 |
dpavlin |
506 |
} |
370 |
dpavlin |
593 |
} |
371 |
dpavlin |
506 |
} |
372 |
|
|
|
373 |
dpavlin |
483 |
$self->progress_bar($pos,$to_rec) unless ($self->{no_progress_bar}); |
374 |
dpavlin |
285 |
|
375 |
|
|
} |
376 |
|
|
|
377 |
dpavlin |
286 |
$self->{pos} = -1; |
378 |
|
|
$self->{last_pcnt} = 0; |
379 |
dpavlin |
285 |
|
380 |
|
|
# store max mfn and return it. |
381 |
dpavlin |
339 |
$self->{max_pos} = $to_rec; |
382 |
|
|
$log->debug("max_pos: $to_rec"); |
383 |
dpavlin |
285 |
|
384 |
dpavlin |
757 |
# save for dump |
385 |
|
|
$self->{ll_db} = $ll_db; |
386 |
|
|
|
387 |
dpavlin |
285 |
return $size; |
388 |
|
|
} |
389 |
|
|
|
390 |
|
|
=head2 fetch |
391 |
|
|
|
392 |
|
|
Fetch next record from database. It will also displays progress bar. |
393 |
|
|
|
394 |
|
|
my $rec = $isis->fetch; |
395 |
|
|
|
396 |
|
|
Record from this function should probably go to C<data_structure> for |
397 |
|
|
normalisation. |
398 |
|
|
|
399 |
|
|
=cut |
400 |
|
|
|
401 |
|
|
sub fetch { |
402 |
|
|
my $self = shift; |
403 |
|
|
|
404 |
|
|
my $log = $self->_get_logger(); |
405 |
|
|
|
406 |
dpavlin |
286 |
$log->logconfess("it seems that you didn't load database!") unless ($self->{pos}); |
407 |
dpavlin |
285 |
|
408 |
dpavlin |
286 |
if ($self->{pos} == -1) { |
409 |
|
|
$self->{pos} = $self->{offset}; |
410 |
dpavlin |
285 |
} else { |
411 |
dpavlin |
286 |
$self->{pos}++; |
412 |
dpavlin |
285 |
} |
413 |
|
|
|
414 |
dpavlin |
286 |
my $mfn = $self->{pos}; |
415 |
dpavlin |
285 |
|
416 |
dpavlin |
286 |
if ($mfn > $self->{max_pos}) { |
417 |
|
|
$self->{pos} = $self->{max_pos}; |
418 |
dpavlin |
285 |
$log->debug("at EOF"); |
419 |
|
|
return; |
420 |
|
|
} |
421 |
|
|
|
422 |
dpavlin |
483 |
$self->progress_bar($mfn,$self->{max_pos}) unless ($self->{no_progress_bar}); |
423 |
dpavlin |
285 |
|
424 |
|
|
my $rec; |
425 |
|
|
|
426 |
dpavlin |
761 |
if ($self->{load_row}) { |
427 |
|
|
$rec = $self->{load_row}->({ id => $mfn }); |
428 |
dpavlin |
285 |
} else { |
429 |
dpavlin |
286 |
$rec = $self->{data}->{$mfn}; |
430 |
dpavlin |
285 |
} |
431 |
|
|
|
432 |
|
|
$rec ||= 0E0; |
433 |
|
|
} |
434 |
|
|
|
435 |
|
|
=head2 pos |
436 |
|
|
|
437 |
|
|
Returns current record number (MFN). |
438 |
|
|
|
439 |
|
|
print $isis->pos; |
440 |
|
|
|
441 |
|
|
First record in database has position 1. |
442 |
|
|
|
443 |
|
|
=cut |
444 |
|
|
|
445 |
|
|
sub pos { |
446 |
|
|
my $self = shift; |
447 |
dpavlin |
286 |
return $self->{pos}; |
448 |
dpavlin |
285 |
} |
449 |
|
|
|
450 |
|
|
|
451 |
|
|
=head2 size |
452 |
|
|
|
453 |
|
|
Returns number of records in database |
454 |
|
|
|
455 |
|
|
print $isis->size; |
456 |
|
|
|
457 |
|
|
Result from this function can be used to loop through all records |
458 |
|
|
|
459 |
|
|
foreach my $mfn ( 1 ... $isis->size ) { ... } |
460 |
|
|
|
461 |
dpavlin |
286 |
because it takes into account C<offset> and C<limit>. |
462 |
dpavlin |
285 |
|
463 |
|
|
=cut |
464 |
|
|
|
465 |
|
|
sub size { |
466 |
|
|
my $self = shift; |
467 |
dpavlin |
286 |
return $self->{size}; |
468 |
dpavlin |
285 |
} |
469 |
|
|
|
470 |
|
|
=head2 seek |
471 |
|
|
|
472 |
|
|
Seek to specified MFN in file. |
473 |
|
|
|
474 |
|
|
$isis->seek(42); |
475 |
|
|
|
476 |
|
|
First record in database has position 1. |
477 |
|
|
|
478 |
|
|
=cut |
479 |
|
|
|
480 |
|
|
sub seek { |
481 |
|
|
my $self = shift; |
482 |
dpavlin |
793 |
my $pos = shift; |
483 |
dpavlin |
285 |
|
484 |
|
|
my $log = $self->_get_logger(); |
485 |
|
|
|
486 |
dpavlin |
797 |
$log->logconfess("called without pos") unless defined($pos); |
487 |
dpavlin |
793 |
|
488 |
dpavlin |
285 |
if ($pos < 1) { |
489 |
|
|
$log->warn("seek before first record"); |
490 |
|
|
$pos = 1; |
491 |
dpavlin |
286 |
} elsif ($pos > $self->{max_pos}) { |
492 |
dpavlin |
285 |
$log->warn("seek beyond last record"); |
493 |
dpavlin |
286 |
$pos = $self->{max_pos}; |
494 |
dpavlin |
285 |
} |
495 |
|
|
|
496 |
dpavlin |
286 |
return $self->{pos} = (($pos - 1) || -1); |
497 |
dpavlin |
285 |
} |
498 |
|
|
|
499 |
dpavlin |
506 |
=head2 stats |
500 |
dpavlin |
285 |
|
501 |
dpavlin |
506 |
Dump statistics about field and subfield usage |
502 |
|
|
|
503 |
dpavlin |
507 |
print $input->stats; |
504 |
dpavlin |
506 |
|
505 |
|
|
=cut |
506 |
|
|
|
507 |
|
|
sub stats { |
508 |
|
|
my $self = shift; |
509 |
dpavlin |
507 |
|
510 |
|
|
my $log = $self->_get_logger(); |
511 |
|
|
|
512 |
|
|
my $s = $self->{_stats}; |
513 |
|
|
if (! $s) { |
514 |
|
|
$log->warn("called stats, but there is no statistics collected"); |
515 |
|
|
return; |
516 |
|
|
} |
517 |
|
|
|
518 |
|
|
my $max_fld = 0; |
519 |
|
|
|
520 |
|
|
my $out = join("\n", |
521 |
|
|
map { |
522 |
dpavlin |
844 |
my $f = $_; |
523 |
|
|
die "no field in ", dump( $s->{fld} ) unless defined( $f ); |
524 |
dpavlin |
507 |
my $v = $s->{fld}->{$f} || die "no s->{fld}->{$f}"; |
525 |
|
|
$max_fld = $v if ($v > $max_fld); |
526 |
|
|
|
527 |
dpavlin |
519 |
my $o = sprintf("%4s %d ~", $f, $v); |
528 |
dpavlin |
507 |
|
529 |
|
|
if (defined($s->{sf}->{$f})) { |
530 |
|
|
map { |
531 |
dpavlin |
593 |
$o .= sprintf(" %s:%d%s", $_, |
532 |
|
|
$s->{sf}->{$f}->{$_}->{count}, |
533 |
|
|
$s->{sf}->{$f}->{$_}->{repeatable} ? '*' : '', |
534 |
|
|
); |
535 |
dpavlin |
507 |
} sort keys %{ $s->{sf}->{$f} }; |
536 |
|
|
} |
537 |
|
|
|
538 |
|
|
if (my $v_r = $s->{repeatable}->{$f}) { |
539 |
|
|
$o .= " ($v_r)" if ($v_r != $v); |
540 |
|
|
} |
541 |
|
|
|
542 |
|
|
$o; |
543 |
dpavlin |
855 |
} sort { $a <=> $b } keys %{ $s->{fld} } |
544 |
dpavlin |
507 |
); |
545 |
|
|
|
546 |
dpavlin |
771 |
$log->debug( sub { dump($s) } ); |
547 |
dpavlin |
507 |
|
548 |
|
|
return $out; |
549 |
dpavlin |
506 |
} |
550 |
|
|
|
551 |
dpavlin |
774 |
=head2 dump_ascii |
552 |
dpavlin |
652 |
|
553 |
|
|
Display humanly readable dump of record |
554 |
|
|
|
555 |
|
|
=cut |
556 |
|
|
|
557 |
dpavlin |
774 |
sub dump_ascii { |
558 |
dpavlin |
652 |
my $self = shift; |
559 |
|
|
|
560 |
dpavlin |
771 |
return unless $self->{ll_db}; |
561 |
dpavlin |
652 |
|
562 |
dpavlin |
771 |
if ($self->{ll_db}->can('dump_rec')) { |
563 |
dpavlin |
774 |
return $self->{ll_db}->dump_ascii( $self->{pos} ); |
564 |
dpavlin |
771 |
} else { |
565 |
|
|
return dump( $self->{ll_db}->fetch_rec( $self->{pos} ) ); |
566 |
|
|
} |
567 |
dpavlin |
652 |
} |
568 |
|
|
|
569 |
dpavlin |
823 |
=head2 _get_regex |
570 |
dpavlin |
597 |
|
571 |
dpavlin |
823 |
Helper function called which create regexps to be execute on code. |
572 |
dpavlin |
597 |
|
573 |
dpavlin |
823 |
_get_regex( 900, 'regex:[0-9]+' ,'numbers' ); |
574 |
|
|
_get_regex( 900, '^b', ' : ^b' ); |
575 |
dpavlin |
597 |
|
576 |
dpavlin |
823 |
It supports perl regexps with C<regex:> prefix to from value and has |
577 |
|
|
additional logic to skip empty subfields. |
578 |
|
|
|
579 |
dpavlin |
597 |
=cut |
580 |
|
|
|
581 |
dpavlin |
636 |
sub _get_regex { |
582 |
|
|
my ($sf,$from,$to) = @_; |
583 |
dpavlin |
797 |
|
584 |
|
|
# protect / |
585 |
|
|
$from =~ s!/!\\/!gs; |
586 |
|
|
$to =~ s!/!\\/!gs; |
587 |
|
|
|
588 |
dpavlin |
784 |
if ($from =~ m/^regex:(.+)$/) { |
589 |
|
|
$from = $1; |
590 |
|
|
} else { |
591 |
|
|
$from = '\Q' . $from . '\E'; |
592 |
|
|
} |
593 |
dpavlin |
636 |
if ($sf =~ /^\^/) { |
594 |
dpavlin |
823 |
my $need_subfield_data = '*'; # no |
595 |
|
|
# if from is also subfield, require some data in between |
596 |
|
|
# to correctly skip empty subfields |
597 |
|
|
$need_subfield_data = '+' if ($from =~ m/^\\Q\^/); |
598 |
dpavlin |
636 |
return |
599 |
dpavlin |
823 |
's/\Q'. $sf .'\E([^\^]' . $need_subfield_data . '?)'. $from .'([^\^]*?)/'. $sf .'$1'. $to .'$2/'; |
600 |
dpavlin |
636 |
} else { |
601 |
|
|
return |
602 |
dpavlin |
784 |
's/'. $from .'/'. $to .'/g'; |
603 |
dpavlin |
636 |
} |
604 |
|
|
} |
605 |
|
|
|
606 |
dpavlin |
823 |
|
607 |
|
|
=head2 modify_record_regexps |
608 |
|
|
|
609 |
|
|
Generate hash with regexpes to be applied using L<filter>. |
610 |
|
|
|
611 |
|
|
my $regexpes = $input->modify_record_regexps( |
612 |
|
|
900 => { '^a' => { ' : ' => '^b' } }, |
613 |
|
|
901 => { '*' => { '^b' => ' ; ' } }, |
614 |
|
|
); |
615 |
|
|
|
616 |
|
|
=cut |
617 |
|
|
|
618 |
dpavlin |
597 |
sub modify_record_regexps { |
619 |
|
|
my $self = shift; |
620 |
|
|
my $modify_record = {@_}; |
621 |
|
|
|
622 |
|
|
my $regexpes; |
623 |
|
|
|
624 |
dpavlin |
634 |
my $log = $self->_get_logger(); |
625 |
|
|
|
626 |
dpavlin |
597 |
foreach my $f (keys %$modify_record) { |
627 |
dpavlin |
634 |
$log->debug("field: $f"); |
628 |
|
|
|
629 |
dpavlin |
597 |
foreach my $sf (keys %{ $modify_record->{$f} }) { |
630 |
dpavlin |
634 |
$log->debug("subfield: $sf"); |
631 |
|
|
|
632 |
dpavlin |
597 |
foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
633 |
|
|
my $to = $modify_record->{$f}->{$sf}->{$from}; |
634 |
|
|
#die "no field?" unless defined($to); |
635 |
dpavlin |
800 |
my $d = "|$from| -> |$to|"; |
636 |
|
|
$log->debug("transform: $d"); |
637 |
dpavlin |
597 |
|
638 |
dpavlin |
636 |
my $regex = _get_regex($sf,$from,$to); |
639 |
dpavlin |
800 |
push @{ $regexpes->{$f} }, { regex => $regex, debug => $d }; |
640 |
dpavlin |
636 |
$log->debug("regex: $regex"); |
641 |
dpavlin |
597 |
} |
642 |
|
|
} |
643 |
|
|
} |
644 |
|
|
|
645 |
|
|
return $regexpes; |
646 |
|
|
} |
647 |
|
|
|
648 |
dpavlin |
636 |
=head2 modify_file_regexps |
649 |
|
|
|
650 |
dpavlin |
799 |
Generate hash with regexpes to be applied using L<filter> from |
651 |
dpavlin |
636 |
pseudo hash/yaml format for regex mappings. |
652 |
|
|
|
653 |
|
|
It should be obvious: |
654 |
|
|
|
655 |
|
|
200 |
656 |
|
|
'^a' |
657 |
|
|
' : ' => '^e' |
658 |
|
|
' = ' => '^d' |
659 |
|
|
|
660 |
|
|
In field I<200> find C<'^a'> and then C<' : '>, and replace it with C<'^e'>. |
661 |
|
|
In field I<200> find C<'^a'> and then C<' = '>, and replace it with C<'^d'>. |
662 |
|
|
|
663 |
|
|
my $regexpes = $input->modify_file_regexps( 'conf/modify/common.pl' ); |
664 |
|
|
|
665 |
|
|
On undef path it will just return. |
666 |
|
|
|
667 |
|
|
=cut |
668 |
|
|
|
669 |
|
|
sub modify_file_regexps { |
670 |
|
|
my $self = shift; |
671 |
|
|
|
672 |
|
|
my $modify_path = shift || return; |
673 |
|
|
|
674 |
|
|
my $log = $self->_get_logger(); |
675 |
|
|
|
676 |
|
|
my $regexpes; |
677 |
|
|
|
678 |
dpavlin |
697 |
CORE::open(my $fh, $modify_path) || $log->logdie("can't open modify file $modify_path: $!"); |
679 |
dpavlin |
636 |
|
680 |
|
|
my ($f,$sf); |
681 |
|
|
|
682 |
|
|
while(<$fh>) { |
683 |
|
|
chomp; |
684 |
|
|
next if (/^#/ || /^\s*$/); |
685 |
|
|
|
686 |
|
|
if (/^\s*(\d+)\s*$/) { |
687 |
|
|
$f = $1; |
688 |
|
|
$log->debug("field: $f"); |
689 |
|
|
next; |
690 |
|
|
} elsif (/^\s*'([^']*)'\s*$/) { |
691 |
|
|
$sf = $1; |
692 |
|
|
$log->die("can't define subfiled before field in: $_") unless ($f); |
693 |
|
|
$log->debug("subfield: $sf"); |
694 |
|
|
} elsif (/^\s*'([^']*)'\s*=>\s*'([^']*)'\s*$/) { |
695 |
|
|
my ($from,$to) = ($1, $2); |
696 |
|
|
|
697 |
|
|
$log->debug("transform: |$from| -> |$to|"); |
698 |
|
|
|
699 |
|
|
my $regex = _get_regex($sf,$from,$to); |
700 |
dpavlin |
800 |
push @{ $regexpes->{$f} }, { |
701 |
|
|
regex => $regex, |
702 |
|
|
file => $modify_path, |
703 |
|
|
line => $., |
704 |
|
|
}; |
705 |
dpavlin |
636 |
$log->debug("regex: $regex"); |
706 |
|
|
} |
707 |
|
|
} |
708 |
|
|
|
709 |
|
|
return $regexpes; |
710 |
|
|
} |
711 |
|
|
|
712 |
dpavlin |
3 |
=head1 AUTHOR |
713 |
|
|
|
714 |
|
|
Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
715 |
|
|
|
716 |
dpavlin |
1 |
=head1 COPYRIGHT & LICENSE |
717 |
|
|
|
718 |
dpavlin |
599 |
Copyright 2005-2006 Dobrica Pavlinusic, All Rights Reserved. |
719 |
dpavlin |
1 |
|
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::Input |