8 |
use WebPAC::Common; |
use WebPAC::Common; |
9 |
use base qw/WebPAC::Common/; |
use base qw/WebPAC::Common/; |
10 |
use Text::Iconv; |
use Text::Iconv; |
11 |
|
use Data::Dumper; |
12 |
|
|
13 |
=head1 NAME |
=head1 NAME |
14 |
|
|
16 |
|
|
17 |
=head1 VERSION |
=head1 VERSION |
18 |
|
|
19 |
Version 0.03 |
Version 0.09 |
20 |
|
|
21 |
=cut |
=cut |
22 |
|
|
23 |
our $VERSION = '0.03'; |
our $VERSION = '0.09'; |
24 |
|
|
25 |
=head1 SYNOPSIS |
=head1 SYNOPSIS |
26 |
|
|
39 |
|
|
40 |
Perhaps a little code snippet. |
Perhaps a little code snippet. |
41 |
|
|
42 |
use WebPAC::Input; |
use WebPAC::Input; |
43 |
|
|
44 |
my $db = WebPAC::Input->new( |
my $db = WebPAC::Input->new( |
45 |
module => 'WebPAC::Input::ISIS', |
module => 'WebPAC::Input::ISIS', |
|
config => $config, |
|
|
lookup => $lookup_obj, |
|
46 |
low_mem => 1, |
low_mem => 1, |
47 |
); |
); |
48 |
|
|
49 |
$db->open('/path/to/database'); |
$db->open( path => '/path/to/database' ); |
50 |
print "database size: ",$db->size,"\n"; |
print "database size: ",$db->size,"\n"; |
51 |
while (my $rec = $db->fetch) { |
while (my $rec = $db->fetch) { |
52 |
} |
# do something with $rec |
53 |
|
} |
54 |
|
|
55 |
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|
56 |
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|
62 |
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|
63 |
my $db = new WebPAC::Input( |
my $db = new WebPAC::Input( |
64 |
module => 'WebPAC::Input::MARC', |
module => 'WebPAC::Input::MARC', |
65 |
code_page => 'ISO-8859-2', |
encoding => 'ISO-8859-2', |
66 |
low_mem => 1, |
low_mem => 1, |
67 |
|
recode => 'char pairs', |
68 |
|
no_progress_bar => 1, |
69 |
); |
); |
70 |
|
|
71 |
C<module> is low-level file format module. See L<WebPAC::Input::Isis> and |
C<module> is low-level file format module. See L<WebPAC::Input::ISIS> and |
72 |
L<WebPAC::Input::MARC>. |
L<WebPAC::Input::MARC>. |
73 |
|
|
74 |
Optional parametar C<code_page> specify application code page (which will be |
Optional parametar C<encoding> specify application code page (which will be |
75 |
used internally). This should probably be your terminal encoding, and by |
used internally). This should probably be your terminal encoding, and by |
76 |
default, it C<ISO-8859-2>. |
default, it C<ISO-8859-2>. |
77 |
|
|
78 |
Default is not to use C<low_mem> options (see L<MEMORY USAGE> below). |
Default is not to use C<low_mem> options (see L<MEMORY USAGE> below). |
79 |
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|
80 |
|
C<recode> is optional string constisting of character or words pairs that |
81 |
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should be replaced in input stream. |
82 |
|
|
83 |
|
C<no_progress_bar> disables progress bar output on C<STDOUT> |
84 |
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|
85 |
This function will also call low-level C<init> if it exists with same |
This function will also call low-level C<init> if it exists with same |
86 |
parametars. |
parametars. |
87 |
|
|
94 |
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|
95 |
my $log = $self->_get_logger; |
my $log = $self->_get_logger; |
96 |
|
|
97 |
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$log->logconfess("code_page argument is not suppored any more. change it to encoding") if ($self->{lookup}); |
98 |
|
$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_ref") if ($self->{lookup}); |
99 |
|
|
100 |
$log->logconfess("specify low-level file format module") unless ($self->{module}); |
$log->logconfess("specify low-level file format module") unless ($self->{module}); |
101 |
my $module = $self->{module}; |
my $module = $self->{module}; |
102 |
$module =~ s#::#/#g; |
$module =~ s#::#/#g; |
103 |
$module .= '.pm'; |
$module .= '.pm'; |
104 |
$log->debug("require low-level module $self->{module} from $module"); |
$log->debug("require low-level module $self->{module} from $module"); |
105 |
|
|
106 |
require $module; |
require $module; |
107 |
eval $self->{module} .'->import'; |
#eval $self->{module} .'->import'; |
108 |
|
|
109 |
# check if required subclasses are implemented |
# check if required subclasses are implemented |
110 |
foreach my $subclass (qw/open_db fetch_rec/) { |
foreach my $subclass (qw/open_db fetch_rec init/) { |
111 |
if ( $self->can($subclass) ) { |
my $n = $self->{module} . '::' . $subclass; |
112 |
$log->debug("imported $subclass"); |
if (! defined &{ $n }) { |
113 |
|
my $missing = "missing $subclass in $self->{module}"; |
114 |
|
$self->{$subclass} = sub { $log->logwarn($missing) }; |
115 |
} else { |
} else { |
116 |
$log->warn("missing $subclass in $self->{module}"); |
$self->{$subclass} = \&{ $n }; |
117 |
} |
} |
118 |
} |
} |
119 |
|
|
120 |
if ($self->can('init')) { |
if ($self->{init}) { |
121 |
$log->debug("calling init"); |
$log->debug("calling init"); |
122 |
$self->init(@_); |
$self->{init}->($self, @_); |
123 |
} |
} |
124 |
|
|
125 |
$self->{'code_page'} ||= 'ISO-8859-2'; |
$self->{'encoding'} ||= 'ISO-8859-2'; |
126 |
|
|
127 |
# running with low_mem flag? well, use DBM::Deep then. |
# running with low_mem flag? well, use DBM::Deep then. |
128 |
if ($self->{'low_mem'}) { |
if ($self->{'low_mem'}) { |
163 |
limit => 500, |
limit => 500, |
164 |
offset => 6000, |
offset => 6000, |
165 |
lookup => $lookup_obj, |
lookup => $lookup_obj, |
166 |
|
stats => 1, |
167 |
|
lookup_ref => sub { |
168 |
|
my ($k,$v) = @_; |
169 |
|
# store lookup $k => $v |
170 |
|
}, |
171 |
|
modify_records => { |
172 |
|
900 => { '^a' => { ' : ' => '^b' } }, |
173 |
|
901 => { '*' => { '^b' => ' ; ' } }, |
174 |
|
}, |
175 |
); |
); |
176 |
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|
177 |
By default, C<code_page> is assumed to be C<852>. |
By default, C<code_page> is assumed to be C<852>. |
180 |
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|
181 |
C<limit> is optional parametar to read just C<limit> records from database |
C<limit> is optional parametar to read just C<limit> records from database |
182 |
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|
183 |
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C<stats> create optional report about usage of fields and subfields |
184 |
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|
185 |
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C<lookup_coderef> is closure to call when adding C<< key => 'value' >> combinations to |
186 |
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lookup. |
187 |
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|
188 |
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C<modify_records> specify mapping from subfields to delimiters or from |
189 |
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delimiters to subfields, as well as oprations on fields (if subfield is |
190 |
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defined as C<*>. |
191 |
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|
192 |
Returns size of database, regardless of C<offset> and C<limit> |
Returns size of database, regardless of C<offset> and C<limit> |
193 |
parametars, see also C<size>. |
parametars, see also C<size>. |
194 |
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|
200 |
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|
201 |
my $log = $self->_get_logger(); |
my $log = $self->_get_logger(); |
202 |
|
|
203 |
|
$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_coderef") if ($arg->{lookup}); |
204 |
|
$log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) |
205 |
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if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); |
206 |
|
|
207 |
$log->logcroak("need path") if (! $arg->{'path'}); |
$log->logcroak("need path") if (! $arg->{'path'}); |
208 |
my $code_page = $arg->{'code_page'} || '852'; |
my $code_page = $arg->{'code_page'} || '852'; |
209 |
|
|
210 |
# store data in object |
# store data in object |
211 |
$self->{'code_page'} = $code_page; |
$self->{'input_code_page'} = $code_page; |
212 |
foreach my $v (qw/path offset limit/) { |
foreach my $v (qw/path offset limit/) { |
213 |
$self->{$v} = $arg->{$v} if ($arg->{$v}); |
$self->{$v} = $arg->{$v} if ($arg->{$v}); |
214 |
} |
} |
215 |
|
|
216 |
# create Text::Iconv object |
# create Text::Iconv object |
217 |
$self->{iconv} = Text::Iconv->new($code_page,$self->{'code_page'}); |
$self->{iconv} = Text::Iconv->new($code_page,$self->{'encoding'}); ## FIXME remove! |
218 |
|
|
219 |
|
my $filter_ref; |
220 |
|
my $recode_regex; |
221 |
|
my $recode_map; |
222 |
|
|
223 |
|
if ($self->{recode}) { |
224 |
|
my @r = split(/\s/, $self->{recode}); |
225 |
|
if ($#r % 2 != 1) { |
226 |
|
$log->logwarn("recode needs even number of elements (some number of valid pairs)"); |
227 |
|
} else { |
228 |
|
while (@r) { |
229 |
|
my $from = shift @r; |
230 |
|
my $to = shift @r; |
231 |
|
$recode_map->{$from} = $to; |
232 |
|
} |
233 |
|
|
234 |
|
$recode_regex = join '|' => keys %{ $recode_map }; |
235 |
|
|
236 |
|
$log->debug("using recode regex: $recode_regex"); |
237 |
|
} |
238 |
|
|
239 |
|
} |
240 |
|
|
241 |
|
my $rec_regex = $self->modify_record_regexps(%{ $arg->{modify_records} }); |
242 |
|
$log->debug("rec_regex: ", Dumper($rec_regex)); |
243 |
|
|
244 |
my ($db, $size) = $self->open_db( |
my ($db, $size) = $self->{open_db}->( $self, |
245 |
path => $arg->{path}, |
path => $arg->{path}, |
246 |
|
filter => sub { |
247 |
|
my ($l,$f_nr) = @_; |
248 |
|
return unless defined($l); |
249 |
|
|
250 |
|
## FIXME remove iconv! |
251 |
|
$l = $self->{iconv}->convert($l) if ($self->{iconv}); |
252 |
|
|
253 |
|
$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
254 |
|
|
255 |
|
## FIXME remove this warning when we are sure that none of API is calling |
256 |
|
## this wrongly |
257 |
|
#warn "filter called without field number" unless ($f_nr); |
258 |
|
|
259 |
|
return $l unless ($rec_regex && $f_nr); |
260 |
|
|
261 |
|
# apply regexps |
262 |
|
if ($rec_regex && defined($rec_regex->{$f_nr})) { |
263 |
|
$log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); |
264 |
|
my $c = 0; |
265 |
|
foreach my $r (@{ $rec_regex->{$f_nr} }) { |
266 |
|
while ( eval '$l =~ ' . $r ) { $c++ }; |
267 |
|
} |
268 |
|
warn "## field $f_nr triggered $c regexpes\n" if ($c && $self->{debug}); |
269 |
|
} |
270 |
|
|
271 |
|
return $l; |
272 |
|
}, |
273 |
|
%{ $arg }, |
274 |
); |
); |
275 |
|
|
276 |
unless ($db) { |
unless (defined($db)) { |
277 |
$log->logwarn("can't open database $arg->{path}, skipping..."); |
$log->logwarn("can't open database $arg->{path}, skipping..."); |
278 |
return; |
return; |
279 |
} |
} |
283 |
return; |
return; |
284 |
} |
} |
285 |
|
|
286 |
my $offset = 1; |
my $from_rec = 1; |
287 |
my $limit = $size; |
my $to_rec = $size; |
288 |
|
|
289 |
if (my $s = $self->{offset}) { |
if (my $s = $self->{offset}) { |
290 |
$log->info("skipping to MFN $s"); |
$log->debug("skipping to MFN $s"); |
291 |
$offset = $s; |
$from_rec = $s; |
292 |
} else { |
} else { |
293 |
$self->{offset} = $offset; |
$self->{offset} = $from_rec; |
294 |
} |
} |
295 |
|
|
296 |
if ($self->{limit}) { |
if ($self->{limit}) { |
297 |
$log->info("limiting to ",$self->{limit}," records"); |
$log->debug("limiting to ",$self->{limit}," records"); |
298 |
$limit = $offset + $self->{limit} - 1; |
$to_rec = $from_rec + $self->{limit} - 1; |
299 |
$limit = $size if ($limit > $size); |
$to_rec = $size if ($to_rec > $size); |
300 |
} |
} |
301 |
|
|
302 |
# store size for later |
# store size for later |
303 |
$self->{size} = ($limit - $offset) ? ($limit - $offset + 1) : 0; |
$self->{size} = ($to_rec - $from_rec) ? ($to_rec - $from_rec + 1) : 0; |
304 |
|
|
305 |
$log->info("processing $self->{size} records in $code_page, convert to $self->{code_page}"); |
$log->info("processing $self->{size}/$size records [$from_rec-$to_rec] convert $code_page -> $self->{encoding}", $self->{stats} ? ' [stats]' : ''); |
306 |
|
|
307 |
# read database |
# read database |
308 |
for (my $pos = $offset; $pos <= $limit; $mfn++) { |
for (my $pos = $from_rec; $pos <= $to_rec; $pos++) { |
309 |
|
|
310 |
$log->debug("position: $pos\n"); |
$log->debug("position: $pos\n"); |
311 |
|
|
312 |
my $rec = $self->fetch_rec( $db, $pos ); |
my $rec = $self->{fetch_rec}->($self, $db, $pos ); |
313 |
|
|
314 |
|
$log->debug(sub { Dumper($rec) }); |
315 |
|
|
316 |
if (! $rec) { |
if (! $rec) { |
317 |
$log->warn("record $pos empty? skipping..."); |
$log->warn("record $pos empty? skipping..."); |
326 |
} |
} |
327 |
|
|
328 |
# create lookup |
# create lookup |
329 |
$self->{'lookup'}->add( $rec ) if ($rec && $self->{'lookup'}); |
$arg->{'lookup_coderef'}->( $rec ) if ($rec && $arg->{'lookup_coderef'}); |
330 |
|
|
331 |
|
# update counters for statistics |
332 |
|
if ($self->{stats}) { |
333 |
|
|
334 |
|
foreach my $fld (keys %{ $rec }) { |
335 |
|
$self->{_stats}->{fld}->{ $fld }++; |
336 |
|
|
337 |
$self->progress_bar($pos,$limit); |
$log->logdie("invalid record fild $fld, not ARRAY") |
338 |
|
unless (ref($rec->{ $fld }) eq 'ARRAY'); |
339 |
|
|
340 |
|
foreach my $row (@{ $rec->{$fld} }) { |
341 |
|
|
342 |
|
if (ref($row) eq 'HASH') { |
343 |
|
|
344 |
|
foreach my $sf (keys %{ $row }) { |
345 |
|
$self->{_stats}->{sf}->{ $fld }->{ $sf }->{count}++; |
346 |
|
$self->{_stats}->{sf}->{ $fld }->{ $sf }->{repeatable}++ |
347 |
|
if (ref($row->{$sf}) eq 'ARRAY'); |
348 |
|
} |
349 |
|
|
350 |
|
} else { |
351 |
|
$self->{_stats}->{repeatable}->{ $fld }++; |
352 |
|
} |
353 |
|
} |
354 |
|
} |
355 |
|
} |
356 |
|
|
357 |
|
$self->progress_bar($pos,$to_rec) unless ($self->{no_progress_bar}); |
358 |
|
|
359 |
} |
} |
360 |
|
|
362 |
$self->{last_pcnt} = 0; |
$self->{last_pcnt} = 0; |
363 |
|
|
364 |
# store max mfn and return it. |
# store max mfn and return it. |
365 |
$self->{max_pos} = $limit; |
$self->{max_pos} = $to_rec; |
366 |
$log->debug("max_pos: $limit"); |
$log->debug("max_pos: $to_rec"); |
367 |
|
|
368 |
return $size; |
return $size; |
369 |
} |
} |
400 |
return; |
return; |
401 |
} |
} |
402 |
|
|
403 |
$self->progress_bar($mfn,$self->{max_pos}); |
$self->progress_bar($mfn,$self->{max_pos}) unless ($self->{no_progress_bar}); |
404 |
|
|
405 |
my $rec; |
my $rec; |
406 |
|
|
475 |
return $self->{pos} = (($pos - 1) || -1); |
return $self->{pos} = (($pos - 1) || -1); |
476 |
} |
} |
477 |
|
|
478 |
|
=head2 stats |
479 |
|
|
480 |
|
Dump statistics about field and subfield usage |
481 |
|
|
482 |
|
print $input->stats; |
483 |
|
|
484 |
|
=cut |
485 |
|
|
486 |
|
sub stats { |
487 |
|
my $self = shift; |
488 |
|
|
489 |
|
my $log = $self->_get_logger(); |
490 |
|
|
491 |
|
my $s = $self->{_stats}; |
492 |
|
if (! $s) { |
493 |
|
$log->warn("called stats, but there is no statistics collected"); |
494 |
|
return; |
495 |
|
} |
496 |
|
|
497 |
|
my $max_fld = 0; |
498 |
|
|
499 |
|
my $out = join("\n", |
500 |
|
map { |
501 |
|
my $f = $_ || die "no field"; |
502 |
|
my $v = $s->{fld}->{$f} || die "no s->{fld}->{$f}"; |
503 |
|
$max_fld = $v if ($v > $max_fld); |
504 |
|
|
505 |
|
my $o = sprintf("%4s %d ~", $f, $v); |
506 |
|
|
507 |
|
if (defined($s->{sf}->{$f})) { |
508 |
|
map { |
509 |
|
$o .= sprintf(" %s:%d%s", $_, |
510 |
|
$s->{sf}->{$f}->{$_}->{count}, |
511 |
|
$s->{sf}->{$f}->{$_}->{repeatable} ? '*' : '', |
512 |
|
); |
513 |
|
} sort keys %{ $s->{sf}->{$f} }; |
514 |
|
} |
515 |
|
|
516 |
|
if (my $v_r = $s->{repeatable}->{$f}) { |
517 |
|
$o .= " ($v_r)" if ($v_r != $v); |
518 |
|
} |
519 |
|
|
520 |
|
$o; |
521 |
|
} sort { $a cmp $b } keys %{ $s->{fld} } |
522 |
|
); |
523 |
|
|
524 |
|
$log->debug( sub { Dumper($s) } ); |
525 |
|
|
526 |
|
return $out; |
527 |
|
} |
528 |
|
|
529 |
|
=head2 modify_record_regexps |
530 |
|
|
531 |
|
Generate hash with regexpes to be applied using L<filter>. |
532 |
|
|
533 |
|
my $regexpes = $input->modify_record_regexps( |
534 |
|
900 => { '^a' => { ' : ' => '^b' } }, |
535 |
|
901 => { '*' => { '^b' => ' ; ' } }, |
536 |
|
); |
537 |
|
|
538 |
|
=cut |
539 |
|
|
540 |
|
sub modify_record_regexps { |
541 |
|
my $self = shift; |
542 |
|
my $modify_record = {@_}; |
543 |
|
|
544 |
|
my $regexpes; |
545 |
|
|
546 |
|
foreach my $f (keys %$modify_record) { |
547 |
|
warn "--- f: $f\n"; |
548 |
|
foreach my $sf (keys %{ $modify_record->{$f} }) { |
549 |
|
warn "---- sf: $sf\n"; |
550 |
|
foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
551 |
|
my $to = $modify_record->{$f}->{$sf}->{$from}; |
552 |
|
#die "no field?" unless defined($to); |
553 |
|
warn "----- transform: |$from| -> |$to|\n"; |
554 |
|
|
555 |
|
if ($sf =~ /^\^/) { |
556 |
|
my $regex = |
557 |
|
's/\Q'. $sf .'\E([^\^]+)\Q'. $from .'\E([^\^]+)/'. $sf .'$1'. $to .'$2/g'; |
558 |
|
push @{ $regexpes->{$f} }, $regex; |
559 |
|
warn ">>>>> $regex [sf]\n"; |
560 |
|
} else { |
561 |
|
my $regex = |
562 |
|
's/\Q'. $from .'\E/'. $to .'/g'; |
563 |
|
push @{ $regexpes->{$f} }, $regex; |
564 |
|
warn ">>>>> $regex [global]\n"; |
565 |
|
} |
566 |
|
|
567 |
|
} |
568 |
|
} |
569 |
|
} |
570 |
|
|
571 |
|
return $regexpes; |
572 |
|
} |
573 |
|
|
574 |
=head1 MEMORY USAGE |
=head1 MEMORY USAGE |
575 |
|
|
608 |
|
|
609 |
=head1 COPYRIGHT & LICENSE |
=head1 COPYRIGHT & LICENSE |
610 |
|
|
611 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
Copyright 2005-2006 Dobrica Pavlinusic, All Rights Reserved. |
612 |
|
|
613 |
This program is free software; you can redistribute it and/or modify it |
This program is free software; you can redistribute it and/or modify it |
614 |
under the same terms as Perl itself. |
under the same terms as Perl itself. |