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package WebPAC; |
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use warnings; |
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use strict; |
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use Carp; |
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use Text::Iconv; |
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use Config::IniFiles; |
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use XML::Simple; |
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use Template; |
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use Log::Log4perl qw(get_logger :levels); |
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use Time::HiRes qw(time); |
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use Data::Dumper; |
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#my $LOOKUP_REGEX = '\[[^\[\]]+\]'; |
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#my $LOOKUP_REGEX_SAVE = '\[([^\[\]]+)\]'; |
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my $LOOKUP_REGEX = 'lookup{[^\{\}]+}'; |
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my $LOOKUP_REGEX_SAVE = 'lookup{([^\{\}]+)}'; |
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=head1 NAME |
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WebPAC - base class for WebPAC |
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=head1 DESCRIPTION |
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This module implements methods used by WebPAC. |
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=head1 METHODS |
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=head2 new |
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Create new instance of WebPAC using configuration specified by C<config_file>. |
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my $webpac = new WebPAC( |
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config_file => 'name.conf', |
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[code_page => 'ISO-8859-2',] |
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[low_mem => 1,] |
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); |
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Default C<code_page> is C<ISO-8859-2>. |
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Default is not to use C<low_mem> options (see L<MEMORY USAGE> below). |
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This method will also read configuration files |
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C<global.conf> (used by indexer and Web font-end) |
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and configuration file specified by C<config_file> |
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which describes databases to be indexed. |
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=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 { |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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$self->{'start_t'} = time(); |
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my $log_file = $self->{'log'} || "log.conf"; |
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Log::Log4perl->init($log_file); |
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my $log = $self->_get_logger(); |
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# fill in default values |
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# output codepage |
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$self->{'code_page'} = 'ISO-8859-2' if (! $self->{'code_page'}); |
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# |
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# read global.conf |
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# |
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$log->debug("read 'global.conf'"); |
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my $config = new Config::IniFiles( -file => 'global.conf' ) || $log->logcroak("can't open 'global.conf'"); |
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# read global config parametars |
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foreach my $var (qw( |
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dbi_dbd |
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dbi_dsn |
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dbi_user |
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dbi_passwd |
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show_progress |
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my_unac_filter |
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output_template |
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)) { |
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$self->{'global_config'}->{$var} = $config->val('global', $var); |
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} |
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# |
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# read indexer config file |
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# |
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$self->{indexer_config_file} = new Config::IniFiles( -file => $self->{config_file} ) || $log->logcroak("can't open '",$self->{config_file},"'"); |
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# create UTF-8 convertor for import_xml files |
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$self->{'utf2cp'} = Text::Iconv->new('UTF-8' ,$self->{'code_page'}); |
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# create Template toolkit instance |
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$self->{'tt'} = Template->new( |
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INCLUDE_PATH => ($self->{'global_config_file'}->{'output_template'} || './output_template'), |
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# FILTERS => { |
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# 'foo' => \&foo_filter, |
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# }, |
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EVAL_PERL => 1, |
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); |
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# running with low_mem flag? well, use DBM::Deep then. |
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if ($self->{'low_mem'}) { |
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$log->info("running with low_mem which impacts performance (<32 Mb memory usage)"); |
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my $db_file = "data.db"; |
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if (-e $db_file) { |
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unlink $db_file or $log->logdie("can't remove '$db_file' from last run"); |
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$log->debug("removed '$db_file' from last run"); |
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} |
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use DBM::Deep; |
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my $db = new DBM::Deep $db_file; |
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$log->logdie("DBM::Deep error: $!") unless ($db); |
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if ($db->error()) { |
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$log->logdie("can't open '$db_file' under low_mem: ",$db->error()); |
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} else { |
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$log->debug("using file '$db_file' for DBM::Deep"); |
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} |
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$self->{'db'} = $db; |
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} |
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return $self; |
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} |
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=head2 open_isis |
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Open CDS/ISIS database using OpenIsis module and read all records to memory. |
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$webpac->open_isis( |
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filename => '/data/ISIS/ISIS', |
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code_page => '852', |
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limit_mfn => 500, |
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start_mfn => 6000, |
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lookup => [ ... ], |
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); |
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By default, ISIS code page is assumed to be C<852>. |
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If optional parametar C<start_mfn> is set, this will be first MFN to read |
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from database (so you can skip beginning of your database if you need to). |
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If optional parametar C<limit_mfn> is set, it will read just 500 records |
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from database in example above. |
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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 |
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value in index. |
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lookup => [ |
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{ 'key' => 'd:v900', 'val' => 'v250^a' }, |
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{ 'eval' => '"v901^a" eq "Podruèje"', |
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'key' => 'pa:v561^4:v562^4:v461^1', |
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'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 |
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sub open_isis { |
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my $self = shift; |
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my $arg = {@_}; |
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my $log = $self->_get_logger(); |
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$log->logcroak("need filename") if (! $arg->{'filename'}); |
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my $code_page = $arg->{'code_page'} || '852'; |
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# store data in object |
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$self->{'isis_filename'} = $arg->{'filename'}; |
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$self->{'isis_code_page'} = $code_page; |
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use OpenIsis; |
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#$self->{'isis_code_page'} = $code_page; |
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# create Text::Iconv object |
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my $cp = Text::Iconv->new($code_page,$self->{'code_page'}); |
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$log->info("reading ISIS database '",$arg->{'filename'},"'"); |
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$log->debug("isis code page: $code_page"); |
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my $isis_db = OpenIsis::open($arg->{'filename'}); |
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my $maxmfn = OpenIsis::maxRowid( $isis_db ) || 1; |
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my $startmfn = 1; |
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if (my $s = $self->{'start_mfn'}) { |
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$log->info("skipping to MFN $s"); |
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$startmfn = $s; |
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} |
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$maxmfn = $startmfn + $self->{limit_mfn} if ($self->{limit_mfn}); |
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$log->info("processing ",($maxmfn-$startmfn)." records..."); |
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# read database |
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for (my $mfn = $startmfn; $mfn <= $maxmfn; $mfn++) { |
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$log->debug("mfn: $mfn\n"); |
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my $rec; |
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# read record |
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my $row = OpenIsis::read( $isis_db, $mfn ); |
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foreach my $k (keys %{$row}) { |
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if ($k ne "mfn") { |
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foreach my $l (@{$row->{$k}}) { |
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$l = $cp->convert($l); |
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# has subfields? |
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my $val; |
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if ($l =~ m/\^/) { |
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foreach my $t (split(/\^/,$l)) { |
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next if (! $t); |
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$val->{substr($t,0,1)} = substr($t,1); |
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} |
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} else { |
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$val = $l; |
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} |
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push @{$rec->{$k}}, $val; |
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} |
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} else { |
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push @{$rec->{'000'}}, $mfn; |
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} |
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} |
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$log->confess("record $mfn empty?") unless ($rec); |
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# store |
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if ($self->{'low_mem'}) { |
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$self->{'db'}->put($mfn, $rec); |
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} else { |
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$self->{'data'}->{$mfn} = $rec; |
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} |
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# create lookup |
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$self->create_lookup($rec, @{$arg->{'lookup'}}); |
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$self->progress_bar($mfn,$maxmfn); |
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} |
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$self->{'current_mfn'} = $startmfn; |
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$self->{'last_pcnt'} = 0; |
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$log->debug("max mfn: $maxmfn"); |
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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 $log = $self->_get_logger(); |
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my $mfn = $self->{'current_mfn'}++ || $log->logconfess("it seems that you didn't load database!"); |
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if ($mfn > $self->{'max_mfn'}) { |
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$self->{'current_mfn'} = $self->{'max_mfn'}; |
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$log->debug("at EOF"); |
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return; |
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} |
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$self->progress_bar($mfn,$self->{'max_mfn'}); |
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if ($self->{'low_mem'}) { |
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return $self->{'db'}->get($mfn); |
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} else { |
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return $self->{'data'}->{$mfn}; |
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} |
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} |
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=head2 progress_bar |
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Draw progress bar on STDERR. |
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$webpac->progress_bar($current, $max); |
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=cut |
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sub progress_bar { |
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my $self = shift; |
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my ($curr,$max) = @_; |
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my $log = $self->_get_logger(); |
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$log->logconfess("no current value!") if (! $curr); |
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$log->logconfess("no maximum value!") if (! $max); |
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if ($curr > $max) { |
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$max = $curr; |
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$log->debug("overflow to $curr"); |
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} |
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$self->{'last_pcnt'} ||= 1; |
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my $p = int($curr * 100 / $max); |
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# reset on re-run |
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if ($p < $self->{'last_pcnt'}) { |
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$self->{'last_pcnt'} = $p; |
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$self->{'last_t'} = time(); |
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$self->{'last_curr'} = 1; |
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} |
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if ($p != $self->{'last_pcnt'}) { |
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my $last_curr = $self->{'last_curr'} || $curr; |
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my $t = time(); |
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my $rate = ($curr - $last_curr) / (($t - $self->{'last_t'} || 1)); |
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my $eta = ($max-$curr) / ($rate || 1); |
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printf STDERR ("%5d [%-38s] %-5d %0.1f/s %s\r",$curr,"=" x ($p/3)."$p%>", $max, $rate, $self->fmt_time($eta)); |
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$self->{'last_pcnt'} = $p; |
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$self->{'last_t'} = time(); |
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$self->{'last_curr'} = $curr; |
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} |
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print STDERR "\n" if ($p == 100); |
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} |
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=head2 fmt_time |
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Format time (in seconds) for display. |
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print $webpac->fmt_time(time()); |
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This method is called by L<progress_bar> to display remaining time. |
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=cut |
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sub fmt_time { |
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my $self = shift; |
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my $t = shift || 0; |
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my $out = ""; |
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my ($ss,$mm,$hh) = gmtime($t); |
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$out .= "${hh}h" if ($hh); |
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$out .= sprintf("%02d:%02d", $mm,$ss); |
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$out .= " " if ($hh == 0); |
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return $out; |
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} |
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dpavlin |
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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'); |
381 |
|
|
|
382 |
|
|
=cut |
383 |
|
|
|
384 |
|
|
sub open_import_xml { |
385 |
|
|
my $self = shift; |
386 |
|
|
|
387 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
388 |
|
|
|
389 |
dpavlin |
363 |
my $arg = {@_}; |
390 |
dpavlin |
372 |
$log->logconfess("need type to load file from import_xml/") if (! $arg->{'type'}); |
391 |
dpavlin |
363 |
|
392 |
dpavlin |
366 |
$self->{'type'} = $arg->{'type'}; |
393 |
dpavlin |
363 |
|
394 |
dpavlin |
366 |
my $type_base = $arg->{'type'}; |
395 |
dpavlin |
363 |
$type_base =~ s/_.*$//g; |
396 |
|
|
|
397 |
dpavlin |
366 |
$self->{'tag'} = $type2tag{$type_base}; |
398 |
|
|
|
399 |
dpavlin |
375 |
$log->info("using type '",$self->{'type'},"' tag <",$self->{'tag'},">"); |
400 |
dpavlin |
366 |
|
401 |
|
|
my $f = "./import_xml/".$self->{'type'}.".xml"; |
402 |
dpavlin |
372 |
$log->logconfess("import_xml file '$f' doesn't exist!") if (! -e "$f"); |
403 |
dpavlin |
363 |
|
404 |
dpavlin |
375 |
$log->info("reading '$f'"); |
405 |
dpavlin |
363 |
|
406 |
dpavlin |
375 |
$self->{'import_xml_file'} = $f; |
407 |
|
|
|
408 |
dpavlin |
363 |
$self->{'import_xml'} = XMLin($f, |
409 |
dpavlin |
366 |
ForceArray => [ $self->{'tag'}, 'config', 'format' ], |
410 |
dpavlin |
363 |
); |
411 |
|
|
|
412 |
dpavlin |
375 |
$log->debug("import xml is ",sub { Dumper($self->{'import_xml'}) }); |
413 |
|
|
|
414 |
dpavlin |
363 |
} |
415 |
|
|
|
416 |
dpavlin |
355 |
=head2 create_lookup |
417 |
|
|
|
418 |
|
|
Create lookup from record using lookup definition. |
419 |
|
|
|
420 |
dpavlin |
367 |
$self->create_lookup($rec, @lookups); |
421 |
|
|
|
422 |
|
|
Called internally by C<open_*> methods. |
423 |
|
|
|
424 |
dpavlin |
355 |
=cut |
425 |
|
|
|
426 |
|
|
sub create_lookup { |
427 |
|
|
my $self = shift; |
428 |
|
|
|
429 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
430 |
dpavlin |
355 |
|
431 |
dpavlin |
372 |
my $rec = shift || $log->logconfess("need record to create lookup"); |
432 |
|
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
433 |
|
|
|
434 |
dpavlin |
355 |
foreach my $i (@_) { |
435 |
dpavlin |
418 |
$log->logconfess("need key") unless defined($i->{'key'}); |
436 |
|
|
$log->logconfess("need val") unless defined($i->{'val'}); |
437 |
|
|
|
438 |
|
|
if (defined($i->{'eval'})) { |
439 |
|
|
# eval first, so we can skip fill_in for key and val |
440 |
|
|
my $eval = $self->fill_in($rec,$i->{'eval'}) || next; |
441 |
|
|
if ($self->_eval($eval)) { |
442 |
|
|
my $key = $self->fill_in($rec,$i->{'key'}) || next; |
443 |
|
|
my @val = $self->fill_in($rec,$i->{'val'}) || next; |
444 |
dpavlin |
373 |
$log->debug("stored $key = ",sub { join(" | ",@val) }); |
445 |
dpavlin |
355 |
push @{$self->{'lookup'}->{$key}}, @val; |
446 |
|
|
} |
447 |
|
|
} else { |
448 |
dpavlin |
418 |
my $key = $self->fill_in($rec,$i->{'key'}) || next; |
449 |
|
|
my @val = $self->fill_in($rec,$i->{'val'}) || next; |
450 |
|
|
$log->debug("stored $key = ",sub { join(" | ",@val) }); |
451 |
|
|
push @{$self->{'lookup'}->{$key}}, @val; |
452 |
dpavlin |
355 |
} |
453 |
|
|
} |
454 |
|
|
} |
455 |
|
|
|
456 |
dpavlin |
356 |
=head2 get_data |
457 |
|
|
|
458 |
|
|
Returns value from record. |
459 |
|
|
|
460 |
dpavlin |
367 |
my $text = $self->get_data(\$rec,$f,$sf,$i,\$found); |
461 |
dpavlin |
356 |
|
462 |
|
|
Arguments are: |
463 |
|
|
record reference C<$rec>, |
464 |
|
|
field C<$f>, |
465 |
|
|
optional subfiled C<$sf>, |
466 |
|
|
index for repeatable values C<$i>. |
467 |
|
|
|
468 |
dpavlin |
367 |
Optinal variable C<$found> will be incremeted if there |
469 |
dpavlin |
356 |
is field. |
470 |
|
|
|
471 |
|
|
Returns value or empty string. |
472 |
|
|
|
473 |
|
|
=cut |
474 |
|
|
|
475 |
|
|
sub get_data { |
476 |
|
|
my $self = shift; |
477 |
|
|
|
478 |
|
|
my ($rec,$f,$sf,$i,$found) = @_; |
479 |
dpavlin |
367 |
|
480 |
dpavlin |
356 |
if ($$rec->{$f}) { |
481 |
dpavlin |
367 |
return '' if (! $$rec->{$f}->[$i]); |
482 |
dpavlin |
389 |
no strict 'refs'; |
483 |
dpavlin |
356 |
if ($sf && $$rec->{$f}->[$i]->{$sf}) { |
484 |
|
|
$$found++ if (defined($$found)); |
485 |
|
|
return $$rec->{$f}->[$i]->{$sf}; |
486 |
|
|
} elsif ($$rec->{$f}->[$i]) { |
487 |
|
|
$$found++ if (defined($$found)); |
488 |
dpavlin |
366 |
# it still might have subfield, just |
489 |
|
|
# not specified, so we'll dump all |
490 |
|
|
if ($$rec->{$f}->[$i] =~ /HASH/o) { |
491 |
|
|
my $out; |
492 |
|
|
foreach my $k (keys %{$$rec->{$f}->[$i]}) { |
493 |
|
|
$out .= $$rec->{$f}->[$i]->{$k}." "; |
494 |
|
|
} |
495 |
|
|
return $out; |
496 |
|
|
} else { |
497 |
|
|
return $$rec->{$f}->[$i]; |
498 |
|
|
} |
499 |
dpavlin |
356 |
} |
500 |
|
|
} else { |
501 |
|
|
return ''; |
502 |
|
|
} |
503 |
|
|
} |
504 |
|
|
|
505 |
dpavlin |
352 |
=head2 fill_in |
506 |
|
|
|
507 |
|
|
Workhourse of all: takes record from in-memory structure of database and |
508 |
|
|
strings with placeholders and returns string or array of with substituted |
509 |
|
|
values from record. |
510 |
|
|
|
511 |
dpavlin |
367 |
my $text = $webpac->fill_in($rec,'v250^a'); |
512 |
dpavlin |
352 |
|
513 |
|
|
Optional argument is ordinal number for repeatable fields. By default, |
514 |
dpavlin |
353 |
it's assume to be first repeatable field (fields are perl array, so first |
515 |
|
|
element is 0). |
516 |
|
|
Following example will read second value from repeatable field. |
517 |
dpavlin |
352 |
|
518 |
dpavlin |
367 |
my $text = $webpac->fill_in($rec,'Title: v250^a',1); |
519 |
dpavlin |
353 |
|
520 |
|
|
This function B<does not> perform parsing of format to inteligenty skip |
521 |
|
|
delimiters before fields which aren't used. |
522 |
|
|
|
523 |
dpavlin |
376 |
This method will automatically decode UTF-8 string to local code page |
524 |
|
|
if needed. |
525 |
|
|
|
526 |
dpavlin |
352 |
=cut |
527 |
|
|
|
528 |
dpavlin |
372 |
sub fill_in { |
529 |
dpavlin |
371 |
my $self = shift; |
530 |
|
|
|
531 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
532 |
dpavlin |
371 |
|
533 |
dpavlin |
372 |
my $rec = shift || $log->logconfess("need data record"); |
534 |
|
|
my $format = shift || $log->logconfess("need format to parse"); |
535 |
dpavlin |
352 |
# iteration (for repeatable fields) |
536 |
|
|
my $i = shift || 0; |
537 |
|
|
|
538 |
|
|
# FIXME remove for speedup? |
539 |
dpavlin |
372 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
540 |
dpavlin |
352 |
|
541 |
dpavlin |
376 |
if (utf8::is_utf8($format)) { |
542 |
|
|
$format = $self->_x($format); |
543 |
|
|
} |
544 |
|
|
|
545 |
dpavlin |
352 |
my $found = 0; |
546 |
|
|
|
547 |
dpavlin |
359 |
my $eval_code; |
548 |
|
|
# remove eval{...} from beginning |
549 |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
550 |
|
|
|
551 |
dpavlin |
352 |
# do actual replacement of placeholders |
552 |
dpavlin |
373 |
$format =~ s/v(\d+)(?:\^(\w))?/$self->get_data(\$rec,$1,$2,$i,\$found)/ges; |
553 |
dpavlin |
352 |
|
554 |
dpavlin |
353 |
if ($found) { |
555 |
dpavlin |
373 |
$log->debug("format: $format"); |
556 |
dpavlin |
359 |
if ($eval_code) { |
557 |
|
|
my $eval = $self->fill_in($rec,$eval_code,$i); |
558 |
dpavlin |
371 |
return if (! $self->_eval($eval)); |
559 |
dpavlin |
359 |
} |
560 |
dpavlin |
353 |
# do we have lookups? |
561 |
dpavlin |
373 |
if ($format =~ /$LOOKUP_REGEX/o) { |
562 |
|
|
$log->debug("format '$format' has lookup"); |
563 |
dpavlin |
353 |
return $self->lookup($format); |
564 |
|
|
} else { |
565 |
|
|
return $format; |
566 |
|
|
} |
567 |
dpavlin |
352 |
} else { |
568 |
|
|
return; |
569 |
|
|
} |
570 |
|
|
} |
571 |
|
|
|
572 |
|
|
=head2 lookup |
573 |
|
|
|
574 |
dpavlin |
355 |
Perform lookups on format supplied to it. |
575 |
dpavlin |
352 |
|
576 |
dpavlin |
367 |
my $text = $self->lookup('[v900]'); |
577 |
dpavlin |
352 |
|
578 |
dpavlin |
355 |
Lookups can be nested (like C<[d:[a:[v900]]]>). |
579 |
|
|
|
580 |
dpavlin |
352 |
=cut |
581 |
|
|
|
582 |
|
|
sub lookup { |
583 |
|
|
my $self = shift; |
584 |
|
|
|
585 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
586 |
dpavlin |
352 |
|
587 |
dpavlin |
372 |
my $tmp = shift || $log->logconfess("need format"); |
588 |
|
|
|
589 |
dpavlin |
373 |
if ($tmp =~ /$LOOKUP_REGEX/o) { |
590 |
dpavlin |
352 |
my @in = ( $tmp ); |
591 |
dpavlin |
372 |
|
592 |
|
|
$log->debug("lookup for: ",$tmp); |
593 |
|
|
|
594 |
dpavlin |
352 |
my @out; |
595 |
|
|
while (my $f = shift @in) { |
596 |
dpavlin |
373 |
if ($f =~ /$LOOKUP_REGEX_SAVE/o) { |
597 |
dpavlin |
352 |
my $k = $1; |
598 |
|
|
if ($self->{'lookup'}->{$k}) { |
599 |
|
|
foreach my $nv (@{$self->{'lookup'}->{$k}}) { |
600 |
|
|
my $tmp2 = $f; |
601 |
dpavlin |
373 |
$tmp2 =~ s/lookup{$k}/$nv/g; |
602 |
dpavlin |
352 |
push @in, $tmp2; |
603 |
|
|
} |
604 |
|
|
} else { |
605 |
|
|
undef $f; |
606 |
|
|
} |
607 |
|
|
} elsif ($f) { |
608 |
|
|
push @out, $f; |
609 |
|
|
} |
610 |
|
|
} |
611 |
dpavlin |
373 |
$log->logconfess("return is array and it's not expected!") unless wantarray; |
612 |
dpavlin |
352 |
return @out; |
613 |
|
|
} else { |
614 |
|
|
return $tmp; |
615 |
|
|
} |
616 |
|
|
} |
617 |
|
|
|
618 |
dpavlin |
356 |
=head2 parse |
619 |
|
|
|
620 |
|
|
Perform smart parsing of string, skipping delimiters for fields which aren't |
621 |
|
|
defined. It can also eval code in format starting with C<eval{...}> and |
622 |
|
|
return output or nothing depending on eval code. |
623 |
|
|
|
624 |
dpavlin |
367 |
my $text = $webpac->parse($rec,'eval{"v901^a" eq "Deskriptor"}descriptor: v250^a', $i); |
625 |
dpavlin |
356 |
|
626 |
|
|
=cut |
627 |
|
|
|
628 |
|
|
sub parse { |
629 |
|
|
my $self = shift; |
630 |
|
|
|
631 |
dpavlin |
366 |
my ($rec, $format_utf8, $i) = @_; |
632 |
dpavlin |
356 |
|
633 |
dpavlin |
366 |
return if (! $format_utf8); |
634 |
|
|
|
635 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
636 |
dpavlin |
358 |
|
637 |
dpavlin |
372 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
638 |
|
|
$log->logconfess("need utf2cp Text::Iconv object!") if (! $self->{'utf2cp'}); |
639 |
|
|
|
640 |
dpavlin |
358 |
$i = 0 if (! $i); |
641 |
|
|
|
642 |
dpavlin |
375 |
my $format = $self->_x($format_utf8) || $log->logconfess("can't convert '$format_utf8' from UTF-8 to ",$self->{'code_page'}); |
643 |
dpavlin |
366 |
|
644 |
dpavlin |
356 |
my @out; |
645 |
|
|
|
646 |
dpavlin |
373 |
$log->debug("format: $format"); |
647 |
|
|
|
648 |
dpavlin |
356 |
my $eval_code; |
649 |
|
|
# remove eval{...} from beginning |
650 |
|
|
$eval_code = $1 if ($format =~ s/^eval{([^}]+)}//s); |
651 |
|
|
|
652 |
dpavlin |
358 |
my $prefix; |
653 |
|
|
my $all_found=0; |
654 |
dpavlin |
356 |
|
655 |
dpavlin |
373 |
while ($format =~ s/^(.*?)v(\d+)(?:\^(\w))?//s) { |
656 |
dpavlin |
356 |
|
657 |
dpavlin |
358 |
my $del = $1 || ''; |
658 |
dpavlin |
359 |
$prefix ||= $del if ($all_found == 0); |
659 |
dpavlin |
358 |
|
660 |
|
|
my $found = 0; |
661 |
|
|
my $tmp = $self->get_data(\$rec,$2,$3,$i,\$found); |
662 |
|
|
|
663 |
dpavlin |
356 |
if ($found) { |
664 |
dpavlin |
358 |
push @out, $del; |
665 |
|
|
push @out, $tmp; |
666 |
|
|
$all_found += $found; |
667 |
dpavlin |
356 |
} |
668 |
|
|
} |
669 |
|
|
|
670 |
dpavlin |
358 |
return if (! $all_found); |
671 |
dpavlin |
356 |
|
672 |
dpavlin |
373 |
my $out = join('',@out); |
673 |
dpavlin |
358 |
|
674 |
dpavlin |
373 |
if ($out) { |
675 |
|
|
# add rest of format (suffix) |
676 |
|
|
$out .= $format; |
677 |
dpavlin |
367 |
|
678 |
dpavlin |
373 |
# add prefix if not there |
679 |
|
|
$out = $prefix . $out if ($out !~ m/^\Q$prefix\E/); |
680 |
|
|
|
681 |
|
|
$log->debug("result: $out"); |
682 |
|
|
} |
683 |
|
|
|
684 |
dpavlin |
359 |
if ($eval_code) { |
685 |
|
|
my $eval = $self->fill_in($rec,$eval_code,$i); |
686 |
dpavlin |
373 |
$log->debug("about to eval{",$eval,"} format: $out"); |
687 |
dpavlin |
371 |
return if (! $self->_eval($eval)); |
688 |
dpavlin |
359 |
} |
689 |
|
|
|
690 |
dpavlin |
358 |
return $out; |
691 |
dpavlin |
356 |
} |
692 |
|
|
|
693 |
dpavlin |
367 |
=head2 parse_to_arr |
694 |
|
|
|
695 |
|
|
Similar to C<parse>, but returns array of all repeatable fields |
696 |
|
|
|
697 |
|
|
my @arr = $webpac->parse_to_arr($rec,'v250^a'); |
698 |
|
|
|
699 |
|
|
=cut |
700 |
|
|
|
701 |
|
|
sub parse_to_arr { |
702 |
|
|
my $self = shift; |
703 |
|
|
|
704 |
|
|
my ($rec, $format_utf8) = @_; |
705 |
|
|
|
706 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
707 |
|
|
|
708 |
|
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
709 |
dpavlin |
367 |
return if (! $format_utf8); |
710 |
|
|
|
711 |
|
|
my $i = 0; |
712 |
|
|
my @arr; |
713 |
|
|
|
714 |
|
|
while (my $v = $self->parse($rec,$format_utf8,$i++)) { |
715 |
|
|
push @arr, $v; |
716 |
|
|
} |
717 |
|
|
|
718 |
dpavlin |
373 |
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
719 |
|
|
|
720 |
dpavlin |
367 |
return @arr; |
721 |
|
|
} |
722 |
|
|
|
723 |
dpavlin |
373 |
=head2 fill_in_to_arr |
724 |
|
|
|
725 |
|
|
Similar to C<fill_in>, but returns array of all repeatable fields. Usable |
726 |
|
|
for fields which have lookups, so they shouldn't be parsed but rather |
727 |
|
|
C<fill_id>ed. |
728 |
|
|
|
729 |
|
|
my @arr = $webpac->fill_in_to_arr($rec,'[v900];;[v250^a]'); |
730 |
|
|
|
731 |
|
|
=cut |
732 |
|
|
|
733 |
|
|
sub fill_in_to_arr { |
734 |
|
|
my $self = shift; |
735 |
|
|
|
736 |
|
|
my ($rec, $format_utf8) = @_; |
737 |
|
|
|
738 |
|
|
my $log = $self->_get_logger(); |
739 |
|
|
|
740 |
|
|
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
741 |
|
|
return if (! $format_utf8); |
742 |
|
|
|
743 |
|
|
my $i = 0; |
744 |
|
|
my @arr; |
745 |
|
|
|
746 |
|
|
while (my @v = $self->fill_in($rec,$format_utf8,$i++)) { |
747 |
|
|
push @arr, @v; |
748 |
|
|
} |
749 |
|
|
|
750 |
|
|
$log->debug("format '$format_utf8' returned ",--$i," elements: ", sub { join(" | ",@arr) }) if (@arr); |
751 |
|
|
|
752 |
|
|
return @arr; |
753 |
|
|
} |
754 |
|
|
|
755 |
|
|
|
756 |
dpavlin |
366 |
=head2 data_structure |
757 |
|
|
|
758 |
|
|
Create in-memory data structure which represents layout from C<import_xml>. |
759 |
|
|
It is used later to produce output. |
760 |
|
|
|
761 |
dpavlin |
368 |
my @ds = $webpac->data_structure($rec); |
762 |
dpavlin |
366 |
|
763 |
dpavlin |
374 |
This method will also set C<$webpac->{'currnet_filename'}> if there is |
764 |
dpavlin |
398 |
<filename> tag in C<import_xml> and C<$webpac->{'headline'}> if there is |
765 |
|
|
<headline> tag. |
766 |
dpavlin |
374 |
|
767 |
dpavlin |
366 |
=cut |
768 |
|
|
|
769 |
dpavlin |
372 |
sub data_structure { |
770 |
dpavlin |
366 |
my $self = shift; |
771 |
|
|
|
772 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
773 |
dpavlin |
366 |
|
774 |
|
|
my $rec = shift; |
775 |
dpavlin |
372 |
$log->logconfess("need HASH as first argument!") if ($rec !~ /HASH/o); |
776 |
dpavlin |
366 |
|
777 |
dpavlin |
374 |
undef $self->{'currnet_filename'}; |
778 |
dpavlin |
398 |
undef $self->{'headline'}; |
779 |
dpavlin |
374 |
|
780 |
dpavlin |
366 |
my @sorted_tags; |
781 |
|
|
if ($self->{tags_by_order}) { |
782 |
|
|
@sorted_tags = @{$self->{tags_by_order}}; |
783 |
|
|
} else { |
784 |
|
|
@sorted_tags = sort { $self->_sort_by_order } keys %{$self->{'import_xml'}->{'indexer'}}; |
785 |
|
|
$self->{tags_by_order} = \@sorted_tags; |
786 |
|
|
} |
787 |
|
|
|
788 |
dpavlin |
368 |
my @ds; |
789 |
dpavlin |
366 |
|
790 |
dpavlin |
373 |
$log->debug("tags: ",sub { join(", ",@sorted_tags) }); |
791 |
|
|
|
792 |
dpavlin |
366 |
foreach my $field (@sorted_tags) { |
793 |
|
|
|
794 |
|
|
my $row; |
795 |
|
|
|
796 |
|
|
#print "field $field [",$self->{'tag'},"] = ",Dumper($self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}); |
797 |
|
|
|
798 |
|
|
foreach my $tag (@{$self->{'import_xml'}->{'indexer'}->{$field}->{$self->{'tag'}}}) { |
799 |
dpavlin |
373 |
my $format = $tag->{'value'} || $tag->{'content'}; |
800 |
dpavlin |
366 |
|
801 |
dpavlin |
373 |
$log->debug("format: $format"); |
802 |
|
|
|
803 |
|
|
my @v; |
804 |
|
|
if ($format =~ /$LOOKUP_REGEX/o) { |
805 |
|
|
@v = $self->fill_in_to_arr($rec,$format); |
806 |
|
|
} else { |
807 |
|
|
@v = $self->parse_to_arr($rec,$format); |
808 |
|
|
} |
809 |
dpavlin |
367 |
next if (! @v); |
810 |
dpavlin |
366 |
|
811 |
dpavlin |
375 |
# use format? |
812 |
|
|
if ($tag->{'format_name'}) { |
813 |
|
|
@v = map { $self->apply_format($tag->{'format_name'},$tag->{'format_delimiter'},$_) } @v; |
814 |
|
|
} |
815 |
|
|
|
816 |
dpavlin |
398 |
if ($field eq 'filename') { |
817 |
|
|
$self->{'current_filename'} = join('',@v); |
818 |
|
|
$log->debug("filename: ",$self->{'current_filename'}); |
819 |
|
|
} elsif ($field eq 'headline') { |
820 |
|
|
$self->{'headline'} .= join('',@v); |
821 |
|
|
$log->debug("headline: ",$self->{'headline'}); |
822 |
|
|
next; # don't return headline in data_structure! |
823 |
|
|
} |
824 |
|
|
|
825 |
dpavlin |
366 |
# does tag have type? |
826 |
|
|
if ($tag->{'type'}) { |
827 |
dpavlin |
367 |
push @{$row->{$tag->{'type'}}}, @v; |
828 |
dpavlin |
366 |
} else { |
829 |
dpavlin |
367 |
push @{$row->{'display'}}, @v; |
830 |
|
|
push @{$row->{'swish'}}, @v; |
831 |
dpavlin |
366 |
} |
832 |
dpavlin |
373 |
|
833 |
dpavlin |
374 |
|
834 |
dpavlin |
366 |
} |
835 |
|
|
|
836 |
dpavlin |
368 |
if ($row) { |
837 |
|
|
$row->{'tag'} = $field; |
838 |
dpavlin |
375 |
|
839 |
|
|
# TODO: name_sigular, name_plural |
840 |
|
|
my $name = $self->{'import_xml'}->{'indexer'}->{$field}->{'name'}; |
841 |
|
|
$row->{'name'} = $name ? $self->_x($name) : $field; |
842 |
|
|
|
843 |
dpavlin |
368 |
push @ds, $row; |
844 |
dpavlin |
374 |
|
845 |
dpavlin |
373 |
$log->debug("row $field: ",sub { Dumper($row) }); |
846 |
dpavlin |
368 |
} |
847 |
dpavlin |
366 |
|
848 |
|
|
} |
849 |
|
|
|
850 |
dpavlin |
370 |
return @ds; |
851 |
dpavlin |
366 |
|
852 |
|
|
} |
853 |
|
|
|
854 |
dpavlin |
370 |
=head2 output |
855 |
|
|
|
856 |
|
|
Create output from in-memory data structure using Template Toolkit template. |
857 |
|
|
|
858 |
|
|
my $text = $webpac->output( template => 'text.tt', data => @ds ); |
859 |
|
|
|
860 |
|
|
=cut |
861 |
|
|
|
862 |
|
|
sub output { |
863 |
|
|
my $self = shift; |
864 |
|
|
|
865 |
|
|
my $args = {@_}; |
866 |
|
|
|
867 |
dpavlin |
372 |
my $log = $self->_get_logger(); |
868 |
dpavlin |
370 |
|
869 |
dpavlin |
372 |
$log->logconfess("need template name") if (! $args->{'template'}); |
870 |
|
|
$log->logconfess("need data array") if (! $args->{'data'}); |
871 |
|
|
|
872 |
dpavlin |
370 |
my $out; |
873 |
|
|
|
874 |
|
|
$self->{'tt'}->process( |
875 |
|
|
$args->{'template'}, |
876 |
|
|
$args, |
877 |
|
|
\$out |
878 |
|
|
) || confess $self->{'tt'}->error(); |
879 |
|
|
|
880 |
|
|
return $out; |
881 |
|
|
} |
882 |
|
|
|
883 |
dpavlin |
411 |
=head2 output_file |
884 |
|
|
|
885 |
|
|
Create output from in-memory data structure using Template Toolkit template |
886 |
|
|
to a file. |
887 |
|
|
|
888 |
|
|
$webpac->output_file( |
889 |
|
|
file => 'out.txt', |
890 |
|
|
template => 'text.tt', |
891 |
|
|
data => @ds |
892 |
|
|
); |
893 |
|
|
|
894 |
|
|
=cut |
895 |
|
|
|
896 |
|
|
sub output_file { |
897 |
|
|
my $self = shift; |
898 |
|
|
|
899 |
|
|
my $args = {@_}; |
900 |
|
|
|
901 |
|
|
my $log = $self->_get_logger(); |
902 |
|
|
|
903 |
dpavlin |
421 |
my $file = $args->{'file'} || $log->logconfess("need file name"); |
904 |
dpavlin |
411 |
|
905 |
dpavlin |
421 |
$log->debug("creating file ",$file); |
906 |
dpavlin |
411 |
|
907 |
dpavlin |
421 |
open(my $fh, ">", $file) || $log->logdie("can't open output file '$file': $!"); |
908 |
dpavlin |
411 |
print $fh $self->output( |
909 |
|
|
template => $args->{'template'}, |
910 |
|
|
data => $args->{'data'}, |
911 |
|
|
) || $log->logdie("print: $!"); |
912 |
|
|
close($fh) || $log->logdie("close: $!"); |
913 |
|
|
} |
914 |
|
|
|
915 |
dpavlin |
375 |
=head2 apply_format |
916 |
|
|
|
917 |
|
|
Apply format specified in tag with C<format_name="name"> and |
918 |
|
|
C<format_delimiter=";;">. |
919 |
|
|
|
920 |
|
|
my $text = $webpac->apply_format($format_name,$format_delimiter,$data); |
921 |
|
|
|
922 |
|
|
Formats can contain C<lookup{...}> if you need them. |
923 |
|
|
|
924 |
|
|
=cut |
925 |
|
|
|
926 |
|
|
sub apply_format { |
927 |
|
|
my $self = shift; |
928 |
|
|
|
929 |
|
|
my ($name,$delimiter,$data) = @_; |
930 |
|
|
|
931 |
|
|
my $log = $self->_get_logger(); |
932 |
|
|
|
933 |
|
|
if (! $self->{'import_xml'}->{'format'}->{$name}) { |
934 |
|
|
$log->warn("<format name=\"$name\"> is not defined in ",$self->{'import_xml_file'}); |
935 |
|
|
return $data; |
936 |
|
|
} |
937 |
|
|
|
938 |
|
|
$log->warn("no delimiter for format $name") if (! $delimiter); |
939 |
|
|
|
940 |
|
|
my $format = $self->_x($self->{'import_xml'}->{'format'}->{$name}->{'content'}) || $log->logdie("can't find format '$name'"); |
941 |
|
|
|
942 |
|
|
my @data = split(/\Q$delimiter\E/, $data); |
943 |
|
|
|
944 |
|
|
my $out = sprintf($format, @data); |
945 |
|
|
$log->debug("using format $name [$format] on $data to produce: $out"); |
946 |
|
|
|
947 |
|
|
if ($out =~ m/$LOOKUP_REGEX/o) { |
948 |
|
|
return $self->lookup($out); |
949 |
|
|
} else { |
950 |
|
|
return $out; |
951 |
|
|
} |
952 |
|
|
|
953 |
|
|
} |
954 |
|
|
|
955 |
|
|
|
956 |
dpavlin |
372 |
# |
957 |
|
|
# |
958 |
|
|
# |
959 |
|
|
|
960 |
|
|
=head1 INTERNAL METHODS |
961 |
|
|
|
962 |
|
|
Here is a quick list of internal methods, mostly useful to turn debugging |
963 |
|
|
on them (see L<LOGGING> below for explanation). |
964 |
|
|
|
965 |
|
|
=cut |
966 |
|
|
|
967 |
|
|
=head2 _eval |
968 |
|
|
|
969 |
|
|
Internal function to eval code without C<strict 'subs'>. |
970 |
|
|
|
971 |
|
|
=cut |
972 |
|
|
|
973 |
|
|
sub _eval { |
974 |
|
|
my $self = shift; |
975 |
|
|
|
976 |
|
|
my $code = shift || return; |
977 |
|
|
|
978 |
|
|
my $log = $self->_get_logger(); |
979 |
|
|
|
980 |
|
|
no strict 'subs'; |
981 |
|
|
my $ret = eval $code; |
982 |
|
|
if ($@) { |
983 |
|
|
$log->error("problem with eval code [$code]: $@"); |
984 |
|
|
} |
985 |
|
|
|
986 |
|
|
$log->debug("eval: ",$code," [",$ret,"]"); |
987 |
|
|
|
988 |
|
|
return $ret || 0; |
989 |
|
|
} |
990 |
|
|
|
991 |
|
|
=head2 _sort_by_order |
992 |
|
|
|
993 |
|
|
Sort xml tags data structure accoding to C<order=""> attribute. |
994 |
|
|
|
995 |
|
|
=cut |
996 |
|
|
|
997 |
|
|
sub _sort_by_order { |
998 |
|
|
my $self = shift; |
999 |
|
|
|
1000 |
|
|
my $va = $self->{'import_xml'}->{'indexer'}->{$a}->{'order'} || |
1001 |
|
|
$self->{'import_xml'}->{'indexer'}->{$a}; |
1002 |
|
|
my $vb = $self->{'import_xml'}->{'indexer'}->{$b}->{'order'} || |
1003 |
|
|
$self->{'import_xml'}->{'indexer'}->{$b}; |
1004 |
|
|
|
1005 |
|
|
return $va <=> $vb; |
1006 |
|
|
} |
1007 |
|
|
|
1008 |
dpavlin |
375 |
=head2 _get_logger |
1009 |
|
|
|
1010 |
|
|
Get C<Log::Log4perl> object with a twist: domains are defined for each |
1011 |
|
|
method |
1012 |
|
|
|
1013 |
|
|
my $log = $webpac->_get_logger(); |
1014 |
|
|
|
1015 |
|
|
=cut |
1016 |
|
|
|
1017 |
dpavlin |
372 |
sub _get_logger { |
1018 |
|
|
my $self = shift; |
1019 |
|
|
|
1020 |
dpavlin |
374 |
my $name = (caller(1))[3] || caller; |
1021 |
|
|
return get_logger($name); |
1022 |
dpavlin |
372 |
} |
1023 |
|
|
|
1024 |
dpavlin |
375 |
=head2 _x |
1025 |
|
|
|
1026 |
|
|
Convert string from UTF-8 to code page defined in C<import_xml>. |
1027 |
|
|
|
1028 |
|
|
my $text = $webpac->_x('utf8 text'); |
1029 |
|
|
|
1030 |
|
|
=cut |
1031 |
|
|
|
1032 |
|
|
sub _x { |
1033 |
|
|
my $self = shift; |
1034 |
|
|
my $utf8 = shift || return; |
1035 |
|
|
|
1036 |
|
|
return $self->{'utf2cp'}->convert($utf8) || |
1037 |
|
|
$self->_get_logger()->logwarn("can't convert '$utf8'"); |
1038 |
|
|
} |
1039 |
|
|
|
1040 |
dpavlin |
372 |
# |
1041 |
|
|
# |
1042 |
|
|
# |
1043 |
|
|
|
1044 |
|
|
=head1 LOGGING |
1045 |
|
|
|
1046 |
|
|
Logging in WebPAC is performed by L<Log::Log4perl> with config file |
1047 |
|
|
C<log.conf>. |
1048 |
|
|
|
1049 |
|
|
Methods defined above have different levels of logging, so |
1050 |
|
|
it's descriptions will be useful to turn (mostry B<debug> logging) on |
1051 |
|
|
or off to see why WabPAC isn't perforing as you expect it (it might even |
1052 |
|
|
be a bug!). |
1053 |
|
|
|
1054 |
|
|
B<This is different from normal Log4perl behaviour>. To repeat, you can |
1055 |
|
|
also use method names, and not only classes (which are just few) |
1056 |
|
|
to filter logging. |
1057 |
|
|
|
1058 |
dpavlin |
422 |
|
1059 |
|
|
=head1 MEMORY USAGE |
1060 |
|
|
|
1061 |
|
|
C<low_mem> options is double-edged sword. If enabled, WebPAC |
1062 |
|
|
will run on memory constraint machines (which doesn't have enough |
1063 |
|
|
physical RAM to create memory structure for whole source database). |
1064 |
|
|
|
1065 |
|
|
If your machine has 512Mb or more of RAM and database is around 10000 records, |
1066 |
|
|
memory shouldn't be an issue. If you don't have enough physical RAM, you |
1067 |
|
|
might consider using virtual memory (if your operating system is handling it |
1068 |
|
|
well, like on FreeBSD or Linux) instead of dropping to L<DBD::Deep> to handle |
1069 |
|
|
parsed structure of ISIS database (this is what C<low_mem> option does). |
1070 |
|
|
|
1071 |
|
|
Hitting swap at end of reading source database is probably o.k. However, |
1072 |
|
|
hitting swap before 90% will dramatically decrease performance and you will |
1073 |
|
|
be better off with C<low_mem> and using rest of availble memory for |
1074 |
|
|
operating system disk cache (Linux is particuallary good about this). |
1075 |
|
|
However, every access to database record will require disk access, so |
1076 |
|
|
generation phase will be slower 10-100 times. |
1077 |
|
|
|
1078 |
|
|
Parsed structures are essential - you just have option to trade RAM memory |
1079 |
|
|
(which is fast) for disk space (which is slow). Be sure to have planty of |
1080 |
|
|
disk space if you are using C<low_mem> and thus L<DBD::Deep>. |
1081 |
|
|
|
1082 |
|
|
However, when WebPAC is running on desktop machines (or laptops :-), it's |
1083 |
|
|
highly undesireable for system to start swapping. Using C<low_mem> option can |
1084 |
|
|
reduce WecPAC memory usage to around 64Mb for same database with lookup |
1085 |
|
|
fields and sorted indexes which stay in RAM. Performance will suffer, but |
1086 |
|
|
memory usage will really be minimal. It might be also more confortable to |
1087 |
|
|
run WebPAC reniced on those machines. |
1088 |
|
|
|
1089 |
dpavlin |
372 |
=cut |
1090 |
|
|
|
1091 |
dpavlin |
352 |
1; |