| 7 |
|
|
| 8 |
use WebPAC::Common; |
use WebPAC::Common; |
| 9 |
use base qw/WebPAC::Common/; |
use base qw/WebPAC::Common/; |
|
use Text::Iconv; |
|
| 10 |
use Data::Dumper; |
use Data::Dumper; |
| 11 |
|
use Encode qw/from_to/; |
| 12 |
|
|
| 13 |
=head1 NAME |
=head1 NAME |
| 14 |
|
|
| 16 |
|
|
| 17 |
=head1 VERSION |
=head1 VERSION |
| 18 |
|
|
| 19 |
Version 0.07 |
Version 0.13 |
| 20 |
|
|
| 21 |
=cut |
=cut |
| 22 |
|
|
| 23 |
our $VERSION = '0.07'; |
our $VERSION = '0.13'; |
| 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, |
|
| 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 |
# do something with $rec |
| 68 |
no_progress_bar => 1, |
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<encoding> specify application code page (which will be |
Optional parametar C<encoding> specify application code page (which will be |
| 98 |
$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_ref") if ($self->{lookup}); |
$log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_ref") if ($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_path = $self->{module}; |
| 102 |
$module =~ s#::#/#g; |
$module_path =~ s#::#/#g; |
| 103 |
$module .= '.pm'; |
$module_path .= '.pm'; |
| 104 |
$log->debug("require low-level module $self->{module} from $module"); |
$log->debug("require low-level module $self->{module} from $module_path"); |
| 105 |
|
|
| 106 |
require $module; |
require $module_path; |
|
#eval $self->{module} .'->import'; |
|
| 107 |
|
|
| 108 |
# check if required subclasses are implemented |
# check if required subclasses are implemented |
| 109 |
foreach my $subclass (qw/open_db fetch_rec init/) { |
foreach my $subclass (qw/open_db fetch_rec init dump_rec/) { |
| 110 |
my $n = $self->{module} . '::' . $subclass; |
# FIXME |
|
if (! defined &{ $n }) { |
|
|
my $missing = "missing $subclass in $self->{module}"; |
|
|
$self->{$subclass} = sub { $log->logwarn($missing) }; |
|
|
} else { |
|
|
$self->{$subclass} = \&{ $n }; |
|
|
} |
|
|
} |
|
|
|
|
|
if ($self->{init}) { |
|
|
$log->debug("calling init"); |
|
|
$self->{init}->($self, @_); |
|
| 111 |
} |
} |
| 112 |
|
|
| 113 |
$self->{'encoding'} ||= 'ISO-8859-2'; |
$self->{'encoding'} ||= 'ISO-8859-2'; |
| 147 |
|
|
| 148 |
$input->open( |
$input->open( |
| 149 |
path => '/path/to/database/file', |
path => '/path/to/database/file', |
| 150 |
code_page => '852', |
code_page => 'cp852', |
| 151 |
limit => 500, |
limit => 500, |
| 152 |
offset => 6000, |
offset => 6000, |
|
lookup => $lookup_obj, |
|
| 153 |
stats => 1, |
stats => 1, |
| 154 |
lookup_ref => sub { |
lookup_coderef => sub { |
| 155 |
my ($k,$v) = @_; |
my $rec = shift; |
| 156 |
# store lookup $k => $v |
# store lookups |
| 157 |
}, |
}, |
| 158 |
|
modify_records => { |
| 159 |
|
900 => { '^a' => { ' : ' => '^b' } }, |
| 160 |
|
901 => { '*' => { '^b' => ' ; ' } }, |
| 161 |
|
}, |
| 162 |
|
modify_file => 'conf/modify/mapping.map', |
| 163 |
); |
); |
| 164 |
|
|
| 165 |
By default, C<code_page> is assumed to be C<852>. |
By default, C<code_page> is assumed to be C<cp852>. |
| 166 |
|
|
| 167 |
C<offset> is optional parametar to position at some offset before reading from database. |
C<offset> is optional parametar to position at some offset before reading from database. |
| 168 |
|
|
| 170 |
|
|
| 171 |
C<stats> create optional report about usage of fields and subfields |
C<stats> create optional report about usage of fields and subfields |
| 172 |
|
|
| 173 |
C<lookup_coderef> is closure to call when adding key => $value combinations to |
C<lookup_coderef> is closure to called to save data into lookups |
| 174 |
lookup. |
|
| 175 |
|
C<modify_records> specify mapping from subfields to delimiters or from |
| 176 |
|
delimiters to subfields, as well as oprations on fields (if subfield is |
| 177 |
|
defined as C<*>. |
| 178 |
|
|
| 179 |
|
C<modify_file> is alternative for C<modify_records> above which preserves order and offers |
| 180 |
|
(hopefully) simplier sintax than YAML or perl (see L</modify_file_regex>). This option |
| 181 |
|
overrides C<modify_records> if both exists for same input. |
| 182 |
|
|
| 183 |
Returns size of database, regardless of C<offset> and C<limit> |
Returns size of database, regardless of C<offset> and C<limit> |
| 184 |
parametars, see also C<size>. |
parametars, see also C<size>. |
| 195 |
$log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) |
$log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef})) |
| 196 |
if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); |
if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE'); |
| 197 |
|
|
| 198 |
|
$log->debug( $arg->{lookup_coderef} ? '' : 'not ', "using lookup_coderef"); |
| 199 |
|
|
| 200 |
$log->logcroak("need path") if (! $arg->{'path'}); |
$log->logcroak("need path") if (! $arg->{'path'}); |
| 201 |
my $code_page = $arg->{'code_page'} || '852'; |
my $code_page = $arg->{'code_page'} || 'cp852'; |
| 202 |
|
|
| 203 |
# store data in object |
# store data in object |
| 204 |
$self->{'input_code_page'} = $code_page; |
$self->{'input_code_page'} = $code_page; |
| 206 |
$self->{$v} = $arg->{$v} if ($arg->{$v}); |
$self->{$v} = $arg->{$v} if ($arg->{$v}); |
| 207 |
} |
} |
| 208 |
|
|
|
# create Text::Iconv object |
|
|
$self->{iconv} = Text::Iconv->new($code_page,$self->{'encoding'}); ## FIXME remove! |
|
|
|
|
| 209 |
my $filter_ref; |
my $filter_ref; |
| 210 |
|
my $recode_regex; |
| 211 |
|
my $recode_map; |
| 212 |
|
|
| 213 |
if ($self->{recode}) { |
if ($self->{recode}) { |
| 214 |
my @r = split(/\s/, $self->{recode}); |
my @r = split(/\s/, $self->{recode}); |
| 215 |
if ($#r % 2 != 1) { |
if ($#r % 2 != 1) { |
| 216 |
$log->logwarn("recode needs even number of elements (some number of valid pairs)"); |
$log->logwarn("recode needs even number of elements (some number of valid pairs)"); |
| 217 |
} else { |
} else { |
|
my $recode; |
|
| 218 |
while (@r) { |
while (@r) { |
| 219 |
my $from = shift @r; |
my $from = shift @r; |
| 220 |
my $to = shift @r; |
my $to = shift @r; |
| 221 |
$recode->{$from} = $to; |
$recode_map->{$from} = $to; |
| 222 |
} |
} |
| 223 |
|
|
| 224 |
my $regex = join '|' => keys %{ $recode }; |
$recode_regex = join '|' => keys %{ $recode_map }; |
|
|
|
|
$log->debug("using recode regex: $regex"); |
|
|
|
|
|
$filter_ref = sub { |
|
|
my $t = shift; |
|
|
$t =~ s/($regex)/$recode->{$1}/g; |
|
|
return $t; |
|
|
}; |
|
| 225 |
|
|
| 226 |
|
$log->debug("using recode regex: $recode_regex"); |
| 227 |
} |
} |
| 228 |
|
|
| 229 |
} |
} |
| 230 |
|
|
| 231 |
my ($db, $size) = $self->{open_db}->( $self, |
my $rec_regex; |
| 232 |
|
if (my $p = $arg->{modify_file}) { |
| 233 |
|
$log->debug("using modify_file $p"); |
| 234 |
|
$rec_regex = $self->modify_file_regexps( $p ); |
| 235 |
|
} elsif (my $h = $arg->{modify_records}) { |
| 236 |
|
$log->debug("using modify_records ", Dumper( $h )); |
| 237 |
|
$rec_regex = $self->modify_record_regexps(%{ $h }); |
| 238 |
|
} |
| 239 |
|
$log->debug("rec_regex: ", Dumper($rec_regex)) if ($rec_regex); |
| 240 |
|
|
| 241 |
|
my $class = $self->{module} || $log->logconfess("can't get low-level module name!"); |
| 242 |
|
|
| 243 |
|
my $ll_db = $class->new( |
| 244 |
path => $arg->{path}, |
path => $arg->{path}, |
| 245 |
filter => $filter_ref, |
# filter => sub { |
| 246 |
|
# my ($l,$f_nr) = @_; |
| 247 |
|
# return unless defined($l); |
| 248 |
|
# from_to($l, $code_page, $self->{'encoding'}); |
| 249 |
|
# $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
| 250 |
|
# return $l; |
| 251 |
|
# }, |
| 252 |
%{ $arg }, |
%{ $arg }, |
| 253 |
); |
); |
| 254 |
|
|
| 255 |
unless (defined($db)) { |
unless (defined($ll_db)) { |
| 256 |
$log->logwarn("can't open database $arg->{path}, skipping..."); |
$log->logwarn("can't open database $arg->{path}, skipping..."); |
| 257 |
return; |
return; |
| 258 |
} |
} |
| 259 |
|
|
| 260 |
|
my $size = $ll_db->size; |
| 261 |
|
|
| 262 |
unless ($size) { |
unless ($size) { |
| 263 |
$log->logwarn("no records in database $arg->{path}, skipping..."); |
$log->logwarn("no records in database $arg->{path}, skipping..."); |
| 264 |
return; |
return; |
| 290 |
|
|
| 291 |
$log->debug("position: $pos\n"); |
$log->debug("position: $pos\n"); |
| 292 |
|
|
| 293 |
my $rec = $self->{fetch_rec}->($self, $db, $pos ); |
my $rec = $ll_db->fetch_rec($pos, sub { |
| 294 |
|
my ($l,$f_nr) = @_; |
| 295 |
|
# return unless defined($l); |
| 296 |
|
# return $l unless ($rec_regex && $f_nr); |
| 297 |
|
|
| 298 |
|
$log->debug("-=> $f_nr ## $l"); |
| 299 |
|
|
| 300 |
|
# codepage conversion and recode_regex |
| 301 |
|
from_to($l, $code_page, $self->{'encoding'}); |
| 302 |
|
$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
| 303 |
|
|
| 304 |
|
# apply regexps |
| 305 |
|
if ($rec_regex && defined($rec_regex->{$f_nr})) { |
| 306 |
|
$log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); |
| 307 |
|
my $c = 0; |
| 308 |
|
foreach my $r (@{ $rec_regex->{$f_nr} }) { |
| 309 |
|
my $old_l = $l; |
| 310 |
|
eval '$l =~ ' . $r; |
| 311 |
|
if ($old_l ne $l) { |
| 312 |
|
$log->debug("REGEX on $f_nr eval \$l =~ $r\n## old l: [$old_l]\n## new l: [$l]"); |
| 313 |
|
} |
| 314 |
|
$log->error("error applying regex: $r") if ($@); |
| 315 |
|
} |
| 316 |
|
} |
| 317 |
|
|
| 318 |
|
$log->debug("<=- $f_nr ## $l"); |
| 319 |
|
return $l; |
| 320 |
|
}); |
| 321 |
|
|
| 322 |
$log->debug(sub { Dumper($rec) }); |
$log->debug(sub { Dumper($rec) }); |
| 323 |
|
|
| 338 |
|
|
| 339 |
# update counters for statistics |
# update counters for statistics |
| 340 |
if ($self->{stats}) { |
if ($self->{stats}) { |
| 341 |
map { |
|
| 342 |
my $fld = $_; |
# fetch clean record with regexpes applied for statistics |
| 343 |
|
my $rec = $ll_db->fetch_rec($pos); |
| 344 |
|
|
| 345 |
|
foreach my $fld (keys %{ $rec }) { |
| 346 |
$self->{_stats}->{fld}->{ $fld }++; |
$self->{_stats}->{fld}->{ $fld }++; |
| 347 |
if (ref($rec->{ $fld }) eq 'ARRAY') { |
|
| 348 |
map { |
$log->logdie("invalid record fild $fld, not ARRAY") |
| 349 |
if (ref($_) eq 'HASH') { |
unless (ref($rec->{ $fld }) eq 'ARRAY'); |
| 350 |
map { |
|
| 351 |
$self->{_stats}->{sf}->{ $fld }->{ $_ }++; |
foreach my $row (@{ $rec->{$fld} }) { |
| 352 |
} keys %{ $_ }; |
|
| 353 |
} else { |
if (ref($row) eq 'HASH') { |
| 354 |
$self->{_stats}->{repeatable}->{ $fld }++; |
|
| 355 |
|
foreach my $sf (keys %{ $row }) { |
| 356 |
|
next if ($sf eq 'subfields'); |
| 357 |
|
$self->{_stats}->{sf}->{ $fld }->{ $sf }->{count}++; |
| 358 |
|
$self->{_stats}->{sf}->{ $fld }->{ $sf }->{repeatable}++ |
| 359 |
|
if (ref($row->{$sf}) eq 'ARRAY'); |
| 360 |
} |
} |
| 361 |
} @{ $rec->{$fld} }; |
|
| 362 |
|
} else { |
| 363 |
|
$self->{_stats}->{repeatable}->{ $fld }++; |
| 364 |
|
} |
| 365 |
} |
} |
| 366 |
} keys %{ $rec }; |
} |
| 367 |
} |
} |
| 368 |
|
|
| 369 |
$self->progress_bar($pos,$to_rec) unless ($self->{no_progress_bar}); |
$self->progress_bar($pos,$to_rec) unless ($self->{no_progress_bar}); |
| 518 |
|
|
| 519 |
if (defined($s->{sf}->{$f})) { |
if (defined($s->{sf}->{$f})) { |
| 520 |
map { |
map { |
| 521 |
$o .= sprintf(" %s:%d", $_, $s->{sf}->{$f}->{$_}); |
$o .= sprintf(" %s:%d%s", $_, |
| 522 |
|
$s->{sf}->{$f}->{$_}->{count}, |
| 523 |
|
$s->{sf}->{$f}->{$_}->{repeatable} ? '*' : '', |
| 524 |
|
); |
| 525 |
} sort keys %{ $s->{sf}->{$f} }; |
} sort keys %{ $s->{sf}->{$f} }; |
| 526 |
} |
} |
| 527 |
|
|
| 538 |
return $out; |
return $out; |
| 539 |
} |
} |
| 540 |
|
|
| 541 |
|
=head2 dump |
| 542 |
|
|
| 543 |
|
Display humanly readable dump of record |
| 544 |
|
|
| 545 |
|
=cut |
| 546 |
|
|
| 547 |
|
sub dump { |
| 548 |
|
my $self = shift; |
| 549 |
|
|
| 550 |
|
return $self->{dump_rec}->($self, $self->{pos}); |
| 551 |
|
|
| 552 |
|
} |
| 553 |
|
|
| 554 |
|
=head2 modify_record_regexps |
| 555 |
|
|
| 556 |
|
Generate hash with regexpes to be applied using l<filter>. |
| 557 |
|
|
| 558 |
|
my $regexpes = $input->modify_record_regexps( |
| 559 |
|
900 => { '^a' => { ' : ' => '^b' } }, |
| 560 |
|
901 => { '*' => { '^b' => ' ; ' } }, |
| 561 |
|
); |
| 562 |
|
|
| 563 |
|
=cut |
| 564 |
|
|
| 565 |
|
sub _get_regex { |
| 566 |
|
my ($sf,$from,$to) = @_; |
| 567 |
|
if ($sf =~ /^\^/) { |
| 568 |
|
return |
| 569 |
|
's/\Q'. $sf .'\E([^\^]*?)\Q'. $from .'\E([^\^]*?)/'. $sf .'$1'. $to .'$2/'; |
| 570 |
|
} else { |
| 571 |
|
return |
| 572 |
|
's/\Q'. $from .'\E/'. $to .'/g'; |
| 573 |
|
} |
| 574 |
|
} |
| 575 |
|
|
| 576 |
|
sub modify_record_regexps { |
| 577 |
|
my $self = shift; |
| 578 |
|
my $modify_record = {@_}; |
| 579 |
|
|
| 580 |
|
my $regexpes; |
| 581 |
|
|
| 582 |
|
my $log = $self->_get_logger(); |
| 583 |
|
|
| 584 |
|
foreach my $f (keys %$modify_record) { |
| 585 |
|
$log->debug("field: $f"); |
| 586 |
|
|
| 587 |
|
foreach my $sf (keys %{ $modify_record->{$f} }) { |
| 588 |
|
$log->debug("subfield: $sf"); |
| 589 |
|
|
| 590 |
|
foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
| 591 |
|
my $to = $modify_record->{$f}->{$sf}->{$from}; |
| 592 |
|
#die "no field?" unless defined($to); |
| 593 |
|
$log->debug("transform: |$from| -> |$to|"); |
| 594 |
|
|
| 595 |
|
my $regex = _get_regex($sf,$from,$to); |
| 596 |
|
push @{ $regexpes->{$f} }, $regex; |
| 597 |
|
$log->debug("regex: $regex"); |
| 598 |
|
} |
| 599 |
|
} |
| 600 |
|
} |
| 601 |
|
|
| 602 |
|
return $regexpes; |
| 603 |
|
} |
| 604 |
|
|
| 605 |
|
=head2 modify_file_regexps |
| 606 |
|
|
| 607 |
|
Generate hash with regexpes to be applied using l<filter> from |
| 608 |
|
pseudo hash/yaml format for regex mappings. |
| 609 |
|
|
| 610 |
|
It should be obvious: |
| 611 |
|
|
| 612 |
|
200 |
| 613 |
|
'^a' |
| 614 |
|
' : ' => '^e' |
| 615 |
|
' = ' => '^d' |
| 616 |
|
|
| 617 |
|
In field I<200> find C<'^a'> and then C<' : '>, and replace it with C<'^e'>. |
| 618 |
|
In field I<200> find C<'^a'> and then C<' = '>, and replace it with C<'^d'>. |
| 619 |
|
|
| 620 |
|
my $regexpes = $input->modify_file_regexps( 'conf/modify/common.pl' ); |
| 621 |
|
|
| 622 |
|
On undef path it will just return. |
| 623 |
|
|
| 624 |
|
=cut |
| 625 |
|
|
| 626 |
|
sub modify_file_regexps { |
| 627 |
|
my $self = shift; |
| 628 |
|
|
| 629 |
|
my $modify_path = shift || return; |
| 630 |
|
|
| 631 |
|
my $log = $self->_get_logger(); |
| 632 |
|
|
| 633 |
|
my $regexpes; |
| 634 |
|
|
| 635 |
|
CORE::open(my $fh, $modify_path) || $log->logdie("can't open modify file $modify_path: $!"); |
| 636 |
|
|
| 637 |
|
my ($f,$sf); |
| 638 |
|
|
| 639 |
|
while(<$fh>) { |
| 640 |
|
chomp; |
| 641 |
|
next if (/^#/ || /^\s*$/); |
| 642 |
|
|
| 643 |
|
if (/^\s*(\d+)\s*$/) { |
| 644 |
|
$f = $1; |
| 645 |
|
$log->debug("field: $f"); |
| 646 |
|
next; |
| 647 |
|
} elsif (/^\s*'([^']*)'\s*$/) { |
| 648 |
|
$sf = $1; |
| 649 |
|
$log->die("can't define subfiled before field in: $_") unless ($f); |
| 650 |
|
$log->debug("subfield: $sf"); |
| 651 |
|
} elsif (/^\s*'([^']*)'\s*=>\s*'([^']*)'\s*$/) { |
| 652 |
|
my ($from,$to) = ($1, $2); |
| 653 |
|
|
| 654 |
|
$log->debug("transform: |$from| -> |$to|"); |
| 655 |
|
|
| 656 |
|
my $regex = _get_regex($sf,$from,$to); |
| 657 |
|
push @{ $regexpes->{$f} }, $regex; |
| 658 |
|
$log->debug("regex: $regex"); |
| 659 |
|
} |
| 660 |
|
} |
| 661 |
|
|
| 662 |
|
return $regexpes; |
| 663 |
|
} |
| 664 |
|
|
| 665 |
=head1 MEMORY USAGE |
=head1 MEMORY USAGE |
| 666 |
|
|
| 667 |
C<low_mem> options is double-edged sword. If enabled, WebPAC |
C<low_mem> options is double-edged sword. If enabled, WebPAC |
| 699 |
|
|
| 700 |
=head1 COPYRIGHT & LICENSE |
=head1 COPYRIGHT & LICENSE |
| 701 |
|
|
| 702 |
Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
Copyright 2005-2006 Dobrica Pavlinusic, All Rights Reserved. |
| 703 |
|
|
| 704 |
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 |
| 705 |
under the same terms as Perl itself. |
under the same terms as Perl itself. |
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