use warnings;
use strict;
+use blib;
+
use WebPAC::Common;
use base qw/WebPAC::Common/;
use Text::Iconv;
=head1 VERSION
-Version 0.05
+Version 0.10
=cut
-our $VERSION = '0.05';
+our $VERSION = '0.10';
=head1 SYNOPSIS
Perhaps a little code snippet.
- use WebPAC::Input;
+ use WebPAC::Input;
- my $db = WebPAC::Input->new(
- module => 'WebPAC::Input::ISIS',
- config => $config,
- lookup => $lookup_obj,
+ my $db = WebPAC::Input->new(
+ module => 'WebPAC::Input::ISIS',
low_mem => 1,
- );
+ );
- $db->open('/path/to/database');
+ $db->open( path => '/path/to/database' );
print "database size: ",$db->size,"\n";
while (my $rec = $db->fetch) {
# do something with $rec
my $db = new WebPAC::Input(
module => 'WebPAC::Input::MARC',
- code_page => 'ISO-8859-2',
+ encoding => 'ISO-8859-2',
low_mem => 1,
recode => 'char pairs',
no_progress_bar => 1,
);
-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
L<WebPAC::Input::MARC>.
-Optional parametar C<code_page> specify application code page (which will be
+Optional parametar C<encoding> specify application code page (which will be
used internally). This should probably be your terminal encoding, and by
default, it C<ISO-8859-2>.
my $log = $self->_get_logger;
+ $log->logconfess("code_page argument is not suppored any more. change it to encoding") if ($self->{lookup});
+ $log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_ref") if ($self->{lookup});
+
$log->logconfess("specify low-level file format module") unless ($self->{module});
my $module = $self->{module};
$module =~ s#::#/#g;
$self->{init}->($self, @_);
}
- $self->{'code_page'} ||= 'ISO-8859-2';
+ $self->{'encoding'} ||= 'ISO-8859-2';
# running with low_mem flag? well, use DBM::Deep then.
if ($self->{'low_mem'}) {
offset => 6000,
lookup => $lookup_obj,
stats => 1,
+ lookup_ref => sub {
+ my ($k,$v) = @_;
+ # store lookup $k => $v
+ },
+ modify_records => {
+ 900 => { '^a' => { ' : ' => '^b' } },
+ 901 => { '*' => { '^b' => ' ; ' } },
+ },
);
By default, C<code_page> is assumed to be C<852>.
C<stats> create optional report about usage of fields and subfields
+C<lookup_coderef> is closure to call when adding C<< key => 'value' >> combinations to
+lookup.
+
+C<modify_records> specify mapping from subfields to delimiters or from
+delimiters to subfields, as well as oprations on fields (if subfield is
+defined as C<*>.
+
Returns size of database, regardless of C<offset> and C<limit>
parametars, see also C<size>.
my $log = $self->_get_logger();
+ $log->logconfess("lookup argument is not suppored any more. rewrite call to lookup_coderef") if ($arg->{lookup});
+ $log->logconfess("lookup_coderef must be CODE, not ",ref($arg->{lookup_coderef}))
+ if ($arg->{lookup_coderef} && ref($arg->{lookup_coderef}) ne 'CODE');
+
$log->logcroak("need path") if (! $arg->{'path'});
my $code_page = $arg->{'code_page'} || '852';
}
# create Text::Iconv object
- $self->{iconv} = Text::Iconv->new($code_page,$self->{'code_page'});
+ $self->{iconv} = Text::Iconv->new($code_page,$self->{'encoding'}); ## FIXME remove!
my $filter_ref;
+ my $recode_regex;
+ my $recode_map;
if ($self->{recode}) {
my @r = split(/\s/, $self->{recode});
if ($#r % 2 != 1) {
$log->logwarn("recode needs even number of elements (some number of valid pairs)");
} else {
- my $recode;
while (@r) {
my $from = shift @r;
my $to = shift @r;
- $recode->{$from} = $to;
+ $recode_map->{$from} = $to;
}
- my $regex = join '|' => keys %{ $recode };
-
- $log->debug("using recode regex: $regex");
-
- $filter_ref = sub {
- my $t = shift;
- $t =~ s/($regex)/$recode->{$1}/g;
- return $t;
- };
+ $recode_regex = join '|' => keys %{ $recode_map };
+ $log->debug("using recode regex: $recode_regex");
}
}
+ my $rec_regex = $self->modify_record_regexps(%{ $arg->{modify_records} });
+ $log->debug("rec_regex: ", Dumper($rec_regex));
+
my ($db, $size) = $self->{open_db}->( $self,
path => $arg->{path},
- filter => $filter_ref,
+ filter => sub {
+ my ($l,$f_nr) = @_;
+ return unless defined($l);
+
+ ## FIXME remove iconv!
+ $l = $self->{iconv}->convert($l) if ($self->{iconv});
+
+ $l =~ s/($recode_regex)/$recode_map->{$1}/g if ($recode_regex && $recode_map);
+
+ ## FIXME remove this warning when we are sure that none of API is calling
+ ## this wrongly
+ #warn "filter called without field number" unless ($f_nr);
+
+ return $l unless ($rec_regex && $f_nr);
+
+# my $max_regex = 100;
+
+ # apply regexps
+ if ($rec_regex && defined($rec_regex->{$f_nr})) {
+ $log->logconfess("regexps->{$f_nr} must be ARRAY") if (ref($rec_regex->{$f_nr}) ne 'ARRAY');
+ my $c = 0;
+ foreach my $r (@{ $rec_regex->{$f_nr} }) {
+ #$log->debug("\$l = $l\neval \$l =~ $r");
+ eval '$l =~ ' . $r;
+ $log->error("error applying regex: $r") if ($@);
+
+# while ( $c < $max_regex && eval '$l =~ ' . $r ) { $c++ };
+# $log->error("field $f_nr has more than $max_regex regex iterations\n\$l = $l\neval \$l =~ $r") if ($c == $max_regex);
+
+ }
+ }
+
+ return $l;
+ },
+ %{ $arg },
);
unless (defined($db)) {
my $to_rec = $size;
if (my $s = $self->{offset}) {
- $log->info("skipping to MFN $s");
+ $log->debug("skipping to MFN $s");
$from_rec = $s;
} else {
$self->{offset} = $from_rec;
# store size for later
$self->{size} = ($to_rec - $from_rec) ? ($to_rec - $from_rec + 1) : 0;
- $log->info("processing $self->{size}/$size records [$from_rec-$to_rec] convert $code_page -> $self->{code_page}", $self->{stats} ? ' [stats]' : '');
+ $log->info("processing $self->{size}/$size records [$from_rec-$to_rec] convert $code_page -> $self->{encoding}", $self->{stats} ? ' [stats]' : '');
# read database
for (my $pos = $from_rec; $pos <= $to_rec; $pos++) {
}
# create lookup
- $self->{'lookup'}->add( $rec ) if ($rec && $self->{'lookup'});
+ $arg->{'lookup_coderef'}->( $rec ) if ($rec && $arg->{'lookup_coderef'});
# update counters for statistics
if ($self->{stats}) {
- map {
- my $fld = $_;
+
+ foreach my $fld (keys %{ $rec }) {
$self->{_stats}->{fld}->{ $fld }++;
- if (ref($rec->{ $fld }) eq 'ARRAY') {
- map {
- if (ref($_) eq 'HASH') {
- map {
- $self->{_stats}->{sf}->{ $fld }->{ $_ }++;
- } keys %{ $_ };
- } else {
- $self->{_stats}->{repeatable}->{ $fld }++;
+
+ $log->logdie("invalid record fild $fld, not ARRAY")
+ unless (ref($rec->{ $fld }) eq 'ARRAY');
+
+ foreach my $row (@{ $rec->{$fld} }) {
+
+ if (ref($row) eq 'HASH') {
+
+ foreach my $sf (keys %{ $row }) {
+ $self->{_stats}->{sf}->{ $fld }->{ $sf }->{count}++;
+ $self->{_stats}->{sf}->{ $fld }->{ $sf }->{repeatable}++
+ if (ref($row->{$sf}) eq 'ARRAY');
}
- } @{ $rec->{$fld} };
+
+ } else {
+ $self->{_stats}->{repeatable}->{ $fld }++;
+ }
}
- } keys %{ $rec };
+ }
}
$self->progress_bar($pos,$to_rec) unless ($self->{no_progress_bar});
Dump statistics about field and subfield usage
- print Dumper( $input->stats );
+ print $input->stats;
=cut
sub stats {
my $self = shift;
- return $self->{_stats};
+
+ my $log = $self->_get_logger();
+
+ my $s = $self->{_stats};
+ if (! $s) {
+ $log->warn("called stats, but there is no statistics collected");
+ return;
+ }
+
+ my $max_fld = 0;
+
+ my $out = join("\n",
+ map {
+ my $f = $_ || die "no field";
+ my $v = $s->{fld}->{$f} || die "no s->{fld}->{$f}";
+ $max_fld = $v if ($v > $max_fld);
+
+ my $o = sprintf("%4s %d ~", $f, $v);
+
+ if (defined($s->{sf}->{$f})) {
+ map {
+ $o .= sprintf(" %s:%d%s", $_,
+ $s->{sf}->{$f}->{$_}->{count},
+ $s->{sf}->{$f}->{$_}->{repeatable} ? '*' : '',
+ );
+ } sort keys %{ $s->{sf}->{$f} };
+ }
+
+ if (my $v_r = $s->{repeatable}->{$f}) {
+ $o .= " ($v_r)" if ($v_r != $v);
+ }
+
+ $o;
+ } sort { $a cmp $b } keys %{ $s->{fld} }
+ );
+
+ $log->debug( sub { Dumper($s) } );
+
+ return $out;
+}
+
+=head2 modify_record_regexps
+
+Generate hash with regexpes to be applied using L<filter>.
+
+ my $regexpes = $input->modify_record_regexps(
+ 900 => { '^a' => { ' : ' => '^b' } },
+ 901 => { '*' => { '^b' => ' ; ' } },
+ );
+
+=cut
+
+sub modify_record_regexps {
+ my $self = shift;
+ my $modify_record = {@_};
+
+ my $regexpes;
+
+ foreach my $f (keys %$modify_record) {
+warn "--- f: $f\n";
+ foreach my $sf (keys %{ $modify_record->{$f} }) {
+warn "---- sf: $sf\n";
+ foreach my $from (keys %{ $modify_record->{$f}->{$sf} }) {
+ my $to = $modify_record->{$f}->{$sf}->{$from};
+ #die "no field?" unless defined($to);
+warn "----- transform: |$from| -> |$to|\n";
+
+ if ($sf =~ /^\^/) {
+ my $regex =
+ 's/\Q'. $sf .'\E([^\^]+)\Q'. $from .'\E([^\^]+)/'. $sf .'$1'. $to .'$2/g';
+ push @{ $regexpes->{$f} }, $regex;
+warn ">>>>> $regex [sf]\n";
+ } else {
+ my $regex =
+ 's/\Q'. $from .'\E/'. $to .'/g';
+ push @{ $regexpes->{$f} }, $regex;
+warn ">>>>> $regex [global]\n";
+ }
+
+ }
+ }
+ }
+
+ return $regexpes;
}
=head1 MEMORY USAGE
=head1 COPYRIGHT & LICENSE
-Copyright 2005 Dobrica Pavlinusic, All Rights Reserved.
+Copyright 2005-2006 Dobrica Pavlinusic, All Rights Reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
projects / webpac2 / blobdiff