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package WebPac; |
package WebPAC; |
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use warnings; |
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use strict; |
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use Carp; |
use Carp; |
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use Text::Iconv; |
use Text::Iconv; |
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use Config::IniFiles; |
use Config::IniFiles; |
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use XML::Simple; |
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use Data::Dumper; |
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=head1 NAME |
=head1 NAME |
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WebPac - base class for WebPac |
WebPAC - base class for WebPAC |
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=head1 DESCRIPTION |
=head1 DESCRIPTION |
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This module implements methods used by WebPac. |
This module implements methods used by WebPAC. |
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=head1 METHODS |
=head1 METHODS |
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=head2 new |
=head2 new |
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This will create new instance of WebPac using configuration specified by C<config_file>. |
This will create new instance of WebPAC using configuration specified by C<config_file>. |
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my $webpac = new WebPac( |
my $webpac = new WebPAC( |
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config_file => 'name.conf', |
config_file => 'name.conf', |
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[code_page => 'ISO-8859-2',] |
[code_page => 'ISO-8859-2',] |
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); |
); |
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=cut |
=cut |
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# mapping between data type and tag which specify |
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# format in XML file |
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my %type2tag = ( |
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'isis' => 'isis', |
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# 'excel' => 'column', |
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# 'marc' => 'marc', |
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# 'feed' => 'feed' |
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); |
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sub new { |
sub new { |
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my $class = shift; |
my $class = shift; |
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my $self = {@_}; |
my $self = {@_}; |
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$self->{indexer_config_file} = new Config::IniFiles( -file => $self->{config_file} ) || croak "can't open '$self->{config_file}'"; |
$self->{indexer_config_file} = new Config::IniFiles( -file => $self->{config_file} ) || croak "can't open '$self->{config_file}'"; |
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# read global config parametars |
$self->{'utf2cp'} = Text::Iconv->new('UTF-8' ,$self->{'code_page'}); |
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foreach my $var (qw( |
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dbi_dbd |
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dbi_dsn |
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dbi_user |
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dbi_passwd |
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show_progress |
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my_unac_filter |
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)) { |
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$self->{global_config}->{$var} = $self->{global_config_file}->val('global', $var); |
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} |
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return $self; |
return $self; |
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} |
} |
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If optional parametar C<limit_mfn> is set, it will read just 500 records |
If optional parametar C<limit_mfn> is set, it will read just 500 records |
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from database in example above. |
from database in example above. |
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Returns number of last record read into memory (size of database, really). |
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C<lookup> argument is an array of lookups to create. Each lookup must have C<key> and |
C<lookup> argument is an array of lookups to create. Each lookup must have C<key> and |
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C<val>. Optional parametar C<eval> is perl code to evaluate before storing |
C<val>. Optional parametar C<eval> is perl code to evaluate before storing |
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value in index. |
value in index. |
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'val' => 'v900' }, |
'val' => 'v900' }, |
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] |
] |
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Returns number of last record read into memory (size of database, really). |
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=cut |
=cut |
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sub open_isis { |
sub open_isis { |
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# create Text::Iconv object |
# create Text::Iconv object |
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my $cp = Text::Iconv->new($code_page,$self->{'code_page'}); |
my $cp = Text::Iconv->new($code_page,$self->{'code_page'}); |
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print STDERR "reading ISIS database '",$arg->{'filename'},"'\n" if ($self->{'debug'}); |
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my $isis_db = OpenIsis::open($arg->{'filename'}); |
my $isis_db = OpenIsis::open($arg->{'filename'}); |
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my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
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$maxmfn = $self->{limit_mfn} if ($self->{limit_mfn}); |
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print STDERR "processing $maxmfn records...\n" if ($self->{'debug'}); |
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# read database |
# read database |
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for (my $mfn = 1; $mfn <= $maxmfn; $mfn++) { |
for (my $mfn = 1; $mfn <= $maxmfn; $mfn++) { |
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} |
} |
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# create lookup |
# create lookup |
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my $rec = $self->{'data'}->{$mfn}; |
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$self->create_lookup($rec, @{$arg->{'lookup'}}); |
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} |
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$self->{'current_mfn'} = 1; |
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# store max mfn and return it. |
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return $self->{'max_mfn'} = $maxmfn; |
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} |
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=head2 fetch_rec |
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Fetch next record from database. It will also display progress bar (once |
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it's implemented, that is). |
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my $rec = $webpac->fetch_rec; |
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=cut |
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sub fetch_rec { |
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my $self = shift; |
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my $mfn = $self->{'current_mfn'}++ || confess "it seems that you didn't load database!"; |
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if ($mfn > $self->{'max_mfn'}) { |
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$self->{'current_mfn'} = $self->{'max_mfn'}; |
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return; |
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} |
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return $self->{'data'}->{$mfn}; |
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} |
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=head2 open_import_xml |
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Read file from C<import_xml/> directory and parse it. |
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$webpac->open_import_xml(type => 'isis'); |
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foreach my $i (@{$arg->{lookup}}) { |
=cut |
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my $rec = $self->{'data'}->{$mfn}; |
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if ($i->{'eval'}) { |
sub open_import_xml { |
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my $eval = $self->fill_in($rec,$i->{'eval'}); |
my $self = shift; |
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my $key = $self->fill_in($rec,$i->{'key'}); |
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my @val = $self->fill_in($rec,$i->{'val'}); |
my $arg = {@_}; |
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if ($key && @val && eval $eval) { |
confess "need type to load file from import_xml/" if (! $arg->{'type'}); |
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push @{$self->{'lookup'}->{$key}}, @val; |
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$self->{'type'} = $arg->{'type'}; |
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my $type_base = $arg->{'type'}; |
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$type_base =~ s/_.*$//g; |
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$self->{'tag'} = $type2tag{$type_base}; |
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print STDERR "using type ",$self->{'type'}," tag ",$self->{'tag'},"\n" if ($self->{'debug'}); |
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my $f = "./import_xml/".$self->{'type'}.".xml"; |
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confess "import_xml file '$f' doesn't exist!" if (! -e "$f"); |
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print STDERR "reading '$f'\n" if ($self->{'debug'}); |
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$self->{'import_xml'} = XMLin($f, |
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ForceArray => [ $self->{'tag'}, 'config', 'format' ], |
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ForceContent => 1 |
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); |
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print Dumper($self->{'import_xml'}); |
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} |
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=head2 create_lookup |
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Create lookup from record using lookup definition. |
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$self->create_lookup($rec, @lookups); |
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Called internally by C<open_*> methods. |
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=cut |
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sub create_lookup { |
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my $self = shift; |
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my $rec = shift || confess "need record to create lookup"; |
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confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
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foreach my $i (@_) { |
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if ($i->{'eval'}) { |
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my $eval = $self->fill_in($rec,$i->{'eval'}); |
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my $key = $self->fill_in($rec,$i->{'key'}); |
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my @val = $self->fill_in($rec,$i->{'val'}); |
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if ($key && @val && eval $eval) { |
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push @{$self->{'lookup'}->{$key}}, @val; |
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} |
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} else { |
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my $key = $self->fill_in($rec,$i->{'key'}); |
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my @val = $self->fill_in($rec,$i->{'val'}); |
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if ($key && @val) { |
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push @{$self->{'lookup'}->{$key}}, @val; |
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} |
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} |
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} |
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} |
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=head2 get_data |
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Returns value from record. |
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my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
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Arguments are: |
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record reference C<$rec>, |
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field C<$f>, |
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optional subfiled C<$sf>, |
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index for repeatable values C<$i>. |
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Optinal variable C<$found> will be incremeted if there |
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is field. |
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Returns value or empty string. |
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=cut |
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sub get_data { |
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my $self = shift; |
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my ($rec,$f,$sf,$i,$found) = @_; |
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if ($$rec->{$f}) { |
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return '' if (! $$rec->{$f}->[$i]); |
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if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
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$$found++ if (defined($$found)); |
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return $$rec->{$f}->[$i]->{$sf}; |
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} elsif ($$rec->{$f}->[$i]) { |
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$$found++ if (defined($$found)); |
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# it still might have subfield, just |
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# not specified, so we'll dump all |
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if ($$rec->{$f}->[$i] =~ /HASH/o) { |
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my $out; |
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foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
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$out .= $$rec->{$f}->[$i]->{$k}." "; |
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} |
} |
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return $out; |
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} else { |
} else { |
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my $key = $self->fill_in($rec,$i->{'key'}); |
return $$rec->{$f}->[$i]; |
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my @val = $self->fill_in($rec,$i->{'val'}); |
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if ($key && @val) { |
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push @{$self->{'lookup'}->{$key}}, @val; |
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} |
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} |
} |
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} |
} |
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} else { |
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return ''; |
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} |
} |
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# store max mfn and return it. |
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return $self->{'max_mfn'} = $maxmfn; |
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} |
} |
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=head2 fill_in |
=head2 fill_in |
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strings with placeholders and returns string or array of with substituted |
strings with placeholders and returns string or array of with substituted |
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values from record. |
values from record. |
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$webpac->fill_in($rec,'v250^a'); |
my $text = $webpac->fill_in($rec,'v250^a'); |
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Optional argument is ordinal number for repeatable fields. By default, |
Optional argument is ordinal number for repeatable fields. By default, |
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it's assume to be first repeatable field (fields are perl array, so first |
it's assume to be first repeatable field (fields are perl array, so first |
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element is 0). |
element is 0). |
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Following example will read second value from repeatable field. |
Following example will read second value from repeatable field. |
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$webpac->fill_in($rec,'Title: v250^a',1); |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
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This function B<does not> perform parsing of format to inteligenty skip |
This function B<does not> perform parsing of format to inteligenty skip |
337 |
delimiters before fields which aren't used. |
delimiters before fields which aren't used. |
347 |
my $i = shift || 0; |
my $i = shift || 0; |
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# FIXME remove for speedup? |
# FIXME remove for speedup? |
350 |
if ($rec !~ /HASH/o) { |
confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
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confess("need HASH as first argument!"); |
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} |
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my $found = 0; |
my $found = 0; |
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# get field with subfield |
my $eval_code; |
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sub get_sf { |
# remove eval{...} from beginning |
356 |
my ($found,$rec,$f,$sf,$i) = @_; |
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
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if ($$rec->{$f} && $$rec->{$f}->[$i]->{$sf}) { |
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$$found++; |
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return $$rec->{$f}->[$i]->{$sf}; |
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} else { |
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return ''; |
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} |
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} |
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# get field (without subfield) |
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sub get_nosf { |
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my ($found,$rec,$f,$i) = @_; |
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if ($$rec->{$f} && $$rec->{$f}->[$i]) { |
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$$found++; |
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return $$rec->{$f}->[$i]; |
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} else { |
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return ''; |
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} |
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} |
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# do actual replacement of placeholders |
# do actual replacement of placeholders |
359 |
$format =~ s/v(\d+)\^(\w)/get_sf(\$found,\$rec,$1,$2,$i)/ges; |
$format =~ s/v(\d+)(?:\^(\w))*/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
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$format =~ s/v(\d+)/get_nosf(\$found,\$rec,$1,$i)/ges; |
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361 |
if ($found) { |
if ($found) { |
362 |
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if ($eval_code) { |
363 |
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my $eval = $self->fill_in($rec,$eval_code,$i); |
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return if (! eval $eval); |
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} |
366 |
# do we have lookups? |
# do we have lookups? |
367 |
if ($format =~ /\[[^\[\]]+\]/o) { |
if ($format =~ /\[[^\[\]]+\]/o) { |
368 |
return $self->lookup($format); |
return $self->lookup($format); |
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=head2 lookup |
=head2 lookup |
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This function will perform lookups on format supplied to it. |
Perform lookups on format supplied to it. |
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my $text = $self->lookup('[v900]'); |
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my $txt = $self->lookup('[v900]'); |
Lookups can be nested (like C<[d:[a:[v900]]]>). |
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=cut |
=cut |
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392 |
if ($tmp =~ /\[[^\[\]]+\]/o) { |
if ($tmp =~ /\[[^\[\]]+\]/o) { |
393 |
my @in = ( $tmp ); |
my @in = ( $tmp ); |
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#print "##lookup $tmp\n"; |
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394 |
my @out; |
my @out; |
395 |
while (my $f = shift @in) { |
while (my $f = shift @in) { |
396 |
if ($f =~ /\[([^\[\]]+)\]/) { |
if ($f =~ /\[([^\[\]]+)\]/) { |
397 |
my $k = $1; |
my $k = $1; |
398 |
if ($self->{'lookup'}->{$k}) { |
if ($self->{'lookup'}->{$k}) { |
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#print "## lookup key = $k\n"; |
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399 |
foreach my $nv (@{$self->{'lookup'}->{$k}}) { |
foreach my $nv (@{$self->{'lookup'}->{$k}}) { |
400 |
my $tmp2 = $f; |
my $tmp2 = $f; |
401 |
$tmp2 =~ s/\[$k\]/$nv/g; |
$tmp2 =~ s/\[$k\]/$nv/g; |
402 |
push @in, $tmp2; |
push @in, $tmp2; |
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#print "## lookup in => $tmp2\n"; |
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403 |
} |
} |
404 |
} else { |
} else { |
405 |
undef $f; |
undef $f; |
406 |
} |
} |
407 |
} elsif ($f) { |
} elsif ($f) { |
408 |
push @out, $f; |
push @out, $f; |
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#print "## lookup out => $f\n"; |
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409 |
} |
} |
410 |
} |
} |
411 |
return @out; |
return @out; |
414 |
} |
} |
415 |
} |
} |
416 |
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=head2 parse |
418 |
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419 |
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Perform smart parsing of string, skipping delimiters for fields which aren't |
420 |
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defined. It can also eval code in format starting with C<eval{...}> and |
421 |
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return output or nothing depending on eval code. |
422 |
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423 |
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my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
424 |
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425 |
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=cut |
426 |
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427 |
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sub parse { |
428 |
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my $self = shift; |
429 |
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430 |
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my ($rec, $format_utf8, $i) = @_; |
431 |
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432 |
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return if (! $format_utf8); |
433 |
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434 |
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confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
435 |
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confess("need utf2cp Text::Iconv object!") if (! $self->{'utf2cp'}); |
436 |
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437 |
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$i = 0 if (! $i); |
438 |
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439 |
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my $format = $self->{'utf2cp'}->convert($format_utf8) || confess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
440 |
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441 |
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my @out; |
442 |
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443 |
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my $eval_code; |
444 |
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# remove eval{...} from beginning |
445 |
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$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
446 |
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447 |
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my $prefix; |
448 |
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my $all_found=0; |
449 |
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450 |
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while ($format =~ s/^(.*?)v(\d+)(?:\^(\w))*//s) { |
451 |
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452 |
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my $del = $1 || ''; |
453 |
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$prefix ||= $del if ($all_found == 0); |
454 |
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455 |
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my $found = 0; |
456 |
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my $tmp = $self->get_data(\$rec,$2,$3,$i,\$found); |
457 |
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458 |
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if ($found) { |
459 |
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push @out, $del; |
460 |
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push @out, $tmp; |
461 |
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$all_found += $found; |
462 |
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} |
463 |
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} |
464 |
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465 |
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return if (! $all_found); |
466 |
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467 |
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my $out = join('',@out) . $format; |
468 |
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469 |
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# add prefix if not there |
470 |
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$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
471 |
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472 |
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if ($eval_code) { |
473 |
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my $eval = $self->fill_in($rec,$eval_code,$i); |
474 |
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return if (! eval $eval); |
475 |
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} |
476 |
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477 |
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return $out; |
478 |
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} |
479 |
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480 |
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=head2 parse_to_arr |
481 |
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482 |
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Similar to C<parse>, but returns array of all repeatable fields |
483 |
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484 |
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my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
485 |
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|
486 |
|
=cut |
487 |
|
|
488 |
|
sub parse_to_arr { |
489 |
|
my $self = shift; |
490 |
|
|
491 |
|
my ($rec, $format_utf8) = @_; |
492 |
|
|
493 |
|
confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
494 |
|
return if (! $format_utf8); |
495 |
|
|
496 |
|
my $i = 0; |
497 |
|
my @arr; |
498 |
|
|
499 |
|
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
500 |
|
push @arr, $v; |
501 |
|
} |
502 |
|
|
503 |
|
return @arr; |
504 |
|
} |
505 |
|
|
506 |
|
=head2 data_structure |
507 |
|
|
508 |
|
Create in-memory data structure which represents layout from C<import_xml>. |
509 |
|
It is used later to produce output. |
510 |
|
|
511 |
|
my $ds = $webpac->data_structure($rec); |
512 |
|
|
513 |
|
=cut |
514 |
|
|
515 |
|
# private method _sort_by_order |
516 |
|
# sort subrouting using order="" attribute |
517 |
|
sub _sort_by_order { |
518 |
|
my $self = shift; |
519 |
|
|
520 |
|
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
521 |
|
$self->{'import_xml'}->{'indexer'}->{$a}; |
522 |
|
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
523 |
|
$self->{'import_xml'}->{'indexer'}->{$b}; |
524 |
|
|
525 |
|
return $va <=> $vb; |
526 |
|
} |
527 |
|
|
528 |
|
sub data_structure { |
529 |
|
my $self = shift; |
530 |
|
|
531 |
|
my $rec = shift; |
532 |
|
confess("need HASH as first argument!") if ($rec !~ /HASH/o); |
533 |
|
|
534 |
|
my @sorted_tags; |
535 |
|
if ($self->{tags_by_order}) { |
536 |
|
@sorted_tags = @{$self->{tags_by_order}}; |
537 |
|
} else { |
538 |
|
@sorted_tags = sort { $self->_sort_by_order } keys %{$self->{'import_xml'}->{'indexer'}}; |
539 |
|
$self->{tags_by_order} = \@sorted_tags; |
540 |
|
} |
541 |
|
|
542 |
|
my $ds; |
543 |
|
|
544 |
|
foreach my $field (@sorted_tags) { |
545 |
|
|
546 |
|
my $row; |
547 |
|
|
548 |
|
#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
549 |
|
|
550 |
|
foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
551 |
|
my @v = $self->parse_to_arr($rec,$tag->{'content'}); |
552 |
|
|
553 |
|
next if (! @v); |
554 |
|
|
555 |
|
# does tag have type? |
556 |
|
if ($tag->{'type'}) { |
557 |
|
push @{$row->{$tag->{'type'}}}, @v; |
558 |
|
} else { |
559 |
|
push @{$row->{'display'}}, @v; |
560 |
|
push @{$row->{'swish'}}, @v; |
561 |
|
} |
562 |
|
} |
563 |
|
|
564 |
|
push @{$ds->{$field}}, $row if ($row); |
565 |
|
|
566 |
|
} |
567 |
|
|
568 |
|
print "data_structure => ",Dumper($ds); |
569 |
|
|
570 |
|
} |
571 |
|
|
572 |
1; |
1; |