7 |
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8 |
use WebPAC::Common; |
use WebPAC::Common; |
9 |
use base qw/WebPAC::Common/; |
use base qw/WebPAC::Common/; |
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use Text::Iconv; |
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10 |
use Data::Dumper; |
use Data::Dumper; |
11 |
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use Encode qw/from_to/; |
12 |
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13 |
=head1 NAME |
=head1 NAME |
14 |
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16 |
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17 |
=head1 VERSION |
=head1 VERSION |
18 |
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19 |
Version 0.11 |
Version 0.13 |
20 |
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21 |
=cut |
=cut |
22 |
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23 |
our $VERSION = '0.11'; |
our $VERSION = '0.13'; |
24 |
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25 |
=head1 SYNOPSIS |
=head1 SYNOPSIS |
26 |
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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 |
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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 |
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106 |
require $module; |
require $module_path; |
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#eval $self->{module} .'->import'; |
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107 |
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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 |
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if (! defined &{ $n }) { |
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my $missing = "missing $subclass in $self->{module}"; |
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$self->{$subclass} = sub { $log->logwarn($missing) }; |
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} else { |
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$self->{$subclass} = \&{ $n }; |
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} |
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} |
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if ($self->{init}) { |
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$log->debug("calling init"); |
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$self->{init}->($self, @_); |
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111 |
} |
} |
112 |
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113 |
$self->{'encoding'} ||= 'ISO-8859-2'; |
$self->{'encoding'} ||= 'ISO-8859-2'; |
147 |
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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, |
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lookup => $lookup_obj, |
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153 |
stats => 1, |
stats => 1, |
154 |
lookup_ref => sub { |
lookup_coderef => sub { |
155 |
my ($k,$v) = @_; |
my $rec = shift; |
156 |
# store lookup $k => $v |
# store lookups |
157 |
}, |
}, |
158 |
modify_records => { |
modify_records => { |
159 |
900 => { '^a' => { ' : ' => '^b' } }, |
900 => { '^a' => { ' : ' => '^b' } }, |
160 |
901 => { '*' => { '^b' => ' ; ' } }, |
901 => { '*' => { '^b' => ' ; ' } }, |
161 |
}, |
}, |
162 |
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modify_file => 'conf/modify/mapping.map', |
163 |
); |
); |
164 |
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165 |
By default, C<code_page> is assumed to be C<852>. |
By default, C<code_page> is assumed to be C<cp852>. |
166 |
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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 |
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170 |
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171 |
C<stats> create optional report about usage of fields and subfields |
C<stats> create optional report about usage of fields and subfields |
172 |
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173 |
C<lookup_coderef> is closure to call when adding C<< key => 'value' >> combinations to |
C<lookup_coderef> is closure to called to save data into lookups |
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lookup. |
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174 |
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175 |
C<modify_records> specify mapping from subfields to delimiters or from |
C<modify_records> specify mapping from subfields to delimiters or from |
176 |
delimiters to subfields, as well as oprations on fields (if subfield is |
delimiters to subfields, as well as oprations on fields (if subfield is |
177 |
defined as C<*>. |
defined as C<*>. |
178 |
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179 |
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C<modify_file> is alternative for C<modify_records> above which preserves order and offers |
180 |
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(hopefully) simplier sintax than YAML or perl (see L</modify_file_regex>). This option |
181 |
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overrides C<modify_records> if both exists for same input. |
182 |
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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>. |
185 |
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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 |
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198 |
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$log->debug( $arg->{lookup_coderef} ? '' : 'not ', "using lookup_coderef"); |
199 |
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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'; |
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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 |
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# create Text::Iconv object |
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$self->{iconv} = Text::Iconv->new($code_page,$self->{'encoding'}); ## FIXME remove! |
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209 |
my $filter_ref; |
my $filter_ref; |
210 |
my $recode_regex; |
my $recode_regex; |
211 |
my $recode_map; |
my $recode_map; |
228 |
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229 |
} |
} |
230 |
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231 |
my $rec_regex = $self->modify_record_regexps(%{ $arg->{modify_records} }); |
my $rec_regex; |
232 |
$log->debug("rec_regex: ", Dumper($rec_regex)); |
if (my $p = $arg->{modify_file}) { |
233 |
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$log->debug("using modify_file $p"); |
234 |
my ($db, $size) = $self->{open_db}->( $self, |
$rec_regex = $self->modify_file_regexps( $p ); |
235 |
path => $arg->{path}, |
} elsif (my $h = $arg->{modify_records}) { |
236 |
filter => sub { |
$log->debug("using modify_records ", Dumper( $h )); |
237 |
my ($l,$f_nr) = @_; |
$rec_regex = $self->modify_record_regexps(%{ $h }); |
238 |
return unless defined($l); |
} |
239 |
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$log->debug("rec_regex: ", Dumper($rec_regex)) if ($rec_regex); |
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## FIXME remove iconv! |
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$l = $self->{iconv}->convert($l) if ($self->{iconv}); |
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$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
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241 |
## FIXME remove this warning when we are sure that none of API is calling |
my $class = $self->{module} || $log->logconfess("can't get low-level module name!"); |
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## this wrongly |
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warn "filter called without field number" unless ($f_nr); |
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242 |
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243 |
return $l; |
my $ll_db = $class->new( |
244 |
}, |
path => $arg->{path}, |
245 |
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# filter => sub { |
246 |
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# my ($l,$f_nr) = @_; |
247 |
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# return unless defined($l); |
248 |
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# from_to($l, $code_page, $self->{'encoding'}); |
249 |
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# $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
250 |
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# return $l; |
251 |
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# }, |
252 |
%{ $arg }, |
%{ $arg }, |
253 |
); |
); |
254 |
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|
255 |
unless (defined($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 |
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260 |
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my $size = $ll_db->size; |
261 |
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262 |
unless ($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 |
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291 |
$log->debug("position: $pos\n"); |
$log->debug("position: $pos\n"); |
292 |
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293 |
my $rec = $self->{fetch_rec}->($self, $db, $pos, sub { |
my $rec = $ll_db->fetch_rec($pos, sub { |
294 |
my ($l,$f_nr) = @_; |
my ($l,$f_nr) = @_; |
295 |
return unless defined($l); |
# return unless defined($l); |
296 |
return $l unless ($rec_regex && $f_nr); |
# return $l unless ($rec_regex && $f_nr); |
297 |
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298 |
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$log->debug("-=> $f_nr ## $l"); |
299 |
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300 |
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# codepage conversion and recode_regex |
301 |
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from_to($l, $code_page, $self->{'encoding'}); |
302 |
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$l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map); |
303 |
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304 |
# apply regexps |
# apply regexps |
305 |
if ($rec_regex && defined($rec_regex->{$f_nr})) { |
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'); |
$log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY'); |
307 |
my $c = 0; |
my $c = 0; |
308 |
foreach my $r (@{ $rec_regex->{$f_nr} }) { |
foreach my $r (@{ $rec_regex->{$f_nr} }) { |
309 |
#$log->debug("\$l = $l\neval \$l =~ $r"); |
my $old_l = $l; |
310 |
eval '$l =~ ' . $r; |
eval '$l =~ ' . $r; |
311 |
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if ($old_l ne $l) { |
312 |
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$log->debug("REGEX on $f_nr eval \$l =~ $r\n## old l: [$old_l]\n## new l: [$l]"); |
313 |
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} |
314 |
$log->error("error applying regex: $r") if ($@); |
$log->error("error applying regex: $r") if ($@); |
315 |
} |
} |
316 |
} |
} |
317 |
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318 |
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$log->debug("<=- $f_nr ## $l"); |
319 |
return $l; |
return $l; |
320 |
}); |
}); |
321 |
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|
340 |
if ($self->{stats}) { |
if ($self->{stats}) { |
341 |
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342 |
# fetch clean record with regexpes applied for statistics |
# fetch clean record with regexpes applied for statistics |
343 |
my $rec = $self->{fetch_rec}->($self, $db, $pos); |
my $rec = $ll_db->fetch_rec($pos); |
344 |
|
|
345 |
foreach my $fld (keys %{ $rec }) { |
foreach my $fld (keys %{ $rec }) { |
346 |
$self->{_stats}->{fld}->{ $fld }++; |
$self->{_stats}->{fld}->{ $fld }++; |
377 |
$self->{max_pos} = $to_rec; |
$self->{max_pos} = $to_rec; |
378 |
$log->debug("max_pos: $to_rec"); |
$log->debug("max_pos: $to_rec"); |
379 |
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380 |
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# save for dump |
381 |
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$self->{ll_db} = $ll_db; |
382 |
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|
383 |
return $size; |
return $size; |
384 |
} |
} |
385 |
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541 |
return $out; |
return $out; |
542 |
} |
} |
543 |
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544 |
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=head2 dump |
545 |
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546 |
|
Display humanly readable dump of record |
547 |
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548 |
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=cut |
549 |
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550 |
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sub dump { |
551 |
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my $self = shift; |
552 |
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553 |
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return $self->{ll_db}->dump_rec( $self->{pos} ); |
554 |
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555 |
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} |
556 |
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|
557 |
=head2 modify_record_regexps |
=head2 modify_record_regexps |
558 |
|
|
559 |
Generate hash with regexpes to be applied using L<filter>. |
Generate hash with regexpes to be applied using l<filter>. |
560 |
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|
561 |
my $regexpes = $input->modify_record_regexps( |
my $regexpes = $input->modify_record_regexps( |
562 |
900 => { '^a' => { ' : ' => '^b' } }, |
900 => { '^a' => { ' : ' => '^b' } }, |
565 |
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|
566 |
=cut |
=cut |
567 |
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568 |
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sub _get_regex { |
569 |
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my ($sf,$from,$to) = @_; |
570 |
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if ($sf =~ /^\^/) { |
571 |
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return |
572 |
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's/\Q'. $sf .'\E([^\^]*?)\Q'. $from .'\E([^\^]*?)/'. $sf .'$1'. $to .'$2/'; |
573 |
|
} else { |
574 |
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return |
575 |
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's/\Q'. $from .'\E/'. $to .'/g'; |
576 |
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} |
577 |
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} |
578 |
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|
579 |
sub modify_record_regexps { |
sub modify_record_regexps { |
580 |
my $self = shift; |
my $self = shift; |
581 |
my $modify_record = {@_}; |
my $modify_record = {@_}; |
582 |
|
|
583 |
my $regexpes; |
my $regexpes; |
584 |
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|
585 |
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my $log = $self->_get_logger(); |
586 |
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|
587 |
foreach my $f (keys %$modify_record) { |
foreach my $f (keys %$modify_record) { |
588 |
warn "--- f: $f\n"; |
$log->debug("field: $f"); |
589 |
|
|
590 |
foreach my $sf (keys %{ $modify_record->{$f} }) { |
foreach my $sf (keys %{ $modify_record->{$f} }) { |
591 |
warn "---- sf: $sf\n"; |
$log->debug("subfield: $sf"); |
592 |
|
|
593 |
foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) { |
594 |
my $to = $modify_record->{$f}->{$sf}->{$from}; |
my $to = $modify_record->{$f}->{$sf}->{$from}; |
595 |
#die "no field?" unless defined($to); |
#die "no field?" unless defined($to); |
596 |
warn "----- transform: |$from| -> |$to|\n"; |
$log->debug("transform: |$from| -> |$to|"); |
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if ($sf =~ /^\^/) { |
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my $regex = |
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's/\Q'. $sf .'\E([^\^]+)\Q'. $from .'\E([^\^]+)/'. $sf .'$1'. $to .'$2/g'; |
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push @{ $regexpes->{$f} }, $regex; |
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warn ">>>>> $regex [sf]\n"; |
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} else { |
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my $regex = |
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's/\Q'. $from .'\E/'. $to .'/g'; |
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push @{ $regexpes->{$f} }, $regex; |
|
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warn ">>>>> $regex [global]\n"; |
|
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} |
|
597 |
|
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598 |
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my $regex = _get_regex($sf,$from,$to); |
599 |
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push @{ $regexpes->{$f} }, $regex; |
600 |
|
$log->debug("regex: $regex"); |
601 |
} |
} |
602 |
} |
} |
603 |
} |
} |
604 |
|
|
605 |
|
return $regexpes; |
606 |
|
} |
607 |
|
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608 |
|
=head2 modify_file_regexps |
609 |
|
|
610 |
|
Generate hash with regexpes to be applied using l<filter> from |
611 |
|
pseudo hash/yaml format for regex mappings. |
612 |
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|
613 |
|
It should be obvious: |
614 |
|
|
615 |
|
200 |
616 |
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'^a' |
617 |
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' : ' => '^e' |
618 |
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' = ' => '^d' |
619 |
|
|
620 |
|
In field I<200> find C<'^a'> and then C<' : '>, and replace it with C<'^e'>. |
621 |
|
In field I<200> find C<'^a'> and then C<' = '>, and replace it with C<'^d'>. |
622 |
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|
623 |
|
my $regexpes = $input->modify_file_regexps( 'conf/modify/common.pl' ); |
624 |
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|
625 |
|
On undef path it will just return. |
626 |
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|
627 |
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=cut |
628 |
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|
629 |
|
sub modify_file_regexps { |
630 |
|
my $self = shift; |
631 |
|
|
632 |
|
my $modify_path = shift || return; |
633 |
|
|
634 |
|
my $log = $self->_get_logger(); |
635 |
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|
636 |
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my $regexpes; |
637 |
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|
638 |
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CORE::open(my $fh, $modify_path) || $log->logdie("can't open modify file $modify_path: $!"); |
639 |
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|
640 |
|
my ($f,$sf); |
641 |
|
|
642 |
|
while(<$fh>) { |
643 |
|
chomp; |
644 |
|
next if (/^#/ || /^\s*$/); |
645 |
|
|
646 |
|
if (/^\s*(\d+)\s*$/) { |
647 |
|
$f = $1; |
648 |
|
$log->debug("field: $f"); |
649 |
|
next; |
650 |
|
} elsif (/^\s*'([^']*)'\s*$/) { |
651 |
|
$sf = $1; |
652 |
|
$log->die("can't define subfiled before field in: $_") unless ($f); |
653 |
|
$log->debug("subfield: $sf"); |
654 |
|
} elsif (/^\s*'([^']*)'\s*=>\s*'([^']*)'\s*$/) { |
655 |
|
my ($from,$to) = ($1, $2); |
656 |
|
|
657 |
|
$log->debug("transform: |$from| -> |$to|"); |
658 |
|
|
659 |
|
my $regex = _get_regex($sf,$from,$to); |
660 |
|
push @{ $regexpes->{$f} }, $regex; |
661 |
|
$log->debug("regex: $regex"); |
662 |
|
} |
663 |
|
} |
664 |
|
|
665 |
return $regexpes; |
return $regexpes; |
666 |
} |
} |
667 |
|
|