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#!/usr/bin/perl -w |
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|
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use Net::Z3950::SimpleServer; |
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use Net::Z3950::OID; |
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use COBISS; |
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use strict; |
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|
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my $max_records = 3; # XXX configure this |
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my $max_result_sets = 10; |
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|
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sub diag { |
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print "# ", @_, $/; |
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} |
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|
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sub InitHandle { |
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my $this = shift; |
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my $session = {}; |
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|
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$this->{HANDLE} = $session; |
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$this->{IMP_NAME} = "Z39.50 HTML scraping bot"; |
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$this->{IMP_VER} = "0.1"; |
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$session->{SETS} = {}; |
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} |
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|
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use Data::Dumper; |
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|
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sub SearchHandle { |
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my $this = shift; |
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|
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diag "SearchHandle ",Dumper($this); |
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|
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my $session = $this->{HANDLE}; |
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my $rpn = $this->{RPN}; |
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my $query; |
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|
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eval { $query = $rpn->{query}->render(); }; |
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if ( $@ && ref($@) ) { ## Did someone/something report any errors? |
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$this->{ERR_CODE} = $@->{errcode}; |
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$this->{ERR_STR} = $@->{errstr}; |
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return; |
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} |
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|
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diag "search for $query"; |
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|
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my $setname = $this->{SETNAME}; |
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my $repl_set = $this->{REPL_SET}; |
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my $result; |
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unless ( $result = COBISS->search( $query ) ) { |
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$this->{ERR_CODE} = 108; |
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return; |
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} |
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my $hits = $COBISS::hits || diag "no results for $query"; |
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diag "got $hits hits"; |
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my $rs = { |
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lower => 1, |
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upper => $hits < $max_records ? $max_records : $hits, |
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data => $result->{'resultElements'}, # FIXME |
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}; |
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my $sets = $session->{SETS}; |
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|
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if ( defined( $sets->{$setname} ) && !$repl_set ) { |
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$this->{ERR_CODE} = 21; |
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return; |
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} |
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if ( scalar keys %$sets >= $max_result_sets ) { |
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$this->{ERR_CODE} = 112; |
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$this->{ERR_STR} = "Max number is $max_result_sets"; |
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return; |
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} |
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$sets->{$setname} = $rs; |
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$this->{HITS} = $session->{HITS} = $hits; |
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$session->{QUERY} = $query; |
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} |
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|
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sub FetchHandle { |
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my $this = shift; |
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my $session = $this->{HANDLE}; |
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my $setname = $this->{SETNAME}; |
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my $req_form = $this->{REQ_FORM}; |
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my $offset = $this->{OFFSET}; |
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my $sets = $session->{SETS}; |
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my $hits = $session->{HITS}; |
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my $rs; |
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my $record; |
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|
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diag Dumper( $this ); |
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|
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if ( !defined( $rs = $sets->{$setname} ) ) { |
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$this->{ERR_CODE} = 30; |
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return; |
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} |
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if ( $offset > $hits ) { |
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$this->{ERR_CODE} = 13; |
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return; |
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} |
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$this->{BASENAME} = "HtmlZ3950"; |
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|
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# if ( !defined($req_form) || ( $req_form eq &Net::Z3950::OID::xml ) ) |
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if (0) |
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{ ## XML records |
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$this->{REP_FORM} = &Net::Z3950::OID::xml; |
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$this->{RECORD} = '<xml>FIXME: not implementd</xml>'; |
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} |
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elsif ( $req_form eq &Net::Z3950::OID::unimarc ) { # FIXME convert to usmarc |
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$this->{REP_FORM} = &Net::Z3950::OID::unimarc; |
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$this->{RECORD} = COBISS->fetch_marc; |
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} |
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else { ## Unsupported record format |
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$this->{ERR_CODE} = 239; |
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$this->{ERR_STR} = $req_form; |
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return; |
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} |
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if ( $offset == $hits ) { |
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$this->{LAST} = 1; |
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} |
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else { |
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$this->{LAST} = 0; |
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} |
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} |
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|
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sub CloseHandle { |
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my $this = shift; |
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} |
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|
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my $z = new Net::Z3950::SimpleServer( |
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INIT => \&InitHandle, |
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SEARCH => \&SearchHandle, |
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FETCH => \&FetchHandle, |
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CLOSE => \&CloseHandle |
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); |
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$z->launch_server( $0, @ARGV ); |
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|
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package Net::Z3950::RPN::And; |
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|
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sub render { |
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my $this = shift; |
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return $this->[0]->render() . ' AND ' . $this->[1]->render(); |
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} |
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|
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package Net::Z3950::RPN::Or; |
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|
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sub render { |
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my $this = shift; |
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return $this->[0]->render() . ' OR ' . $this->[1]->render(); |
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} |
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|
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package Net::Z3950::RPN::AndNot; |
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|
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sub render { |
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my $this = shift; |
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return $this->[0]->render() . ' AND NOT ' . $this->[1]->render(); |
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} |
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|
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package Net::Z3950::RPN::Term; |
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|
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use COBISS; |
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|
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sub render { |
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my $this = shift; |
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|
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print "render ", $this; |
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|
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my $attributes = {}; |
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my $prefix = ""; |
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foreach my $attr ( @{ $this->{attributes} } ) { |
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my $type = $attr->{attributeType}; |
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my $value = $attr->{attributeValue}; |
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$attributes->{$type} = $value; |
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} |
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if ( defined( my $use = $attributes->{1} ) ) { |
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if ( defined( my $field = COBISS::usemap($use) ) ) { |
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$prefix = $field; |
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} |
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else { |
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die { errcode => 114, errstr => $use }; ## Unsupported use attribute |
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} |
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} |
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if ( defined( my $rel = $attributes->{2} ) ) |
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{ ## No relation attributes supported |
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if ( $rel != 3 ) { |
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die { errcode => 117, errstr => $rel }; |
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} |
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} |
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if ( defined( my $pos = $attributes->{3} ) ) |
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{ ## No position attributes either |
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if ( $pos != 3 ) { |
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die { errcode => 119, errstr => $pos }; |
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} |
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} |
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if ( defined( my $struc = $attributes->{4} ) ) { ## No structure |
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if ( ( $struc != 1 ) && ( $struc != 2 ) ) { |
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die { errcode => 118, errstr => $struc }; |
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} |
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} |
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if ( defined( $attributes->{5} ) ) { ## No truncation |
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die { errcode => 113, errstr => 5 }; |
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} |
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my $comp = $attributes->{6}; |
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if ($prefix) { |
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if ( defined($comp) && ( $comp >= 2 ) ) { |
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$prefix = "all$prefix= "; |
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} |
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else { |
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$prefix = "$prefix="; |
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} |
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} |
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|
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my $q = $prefix . $this->{term}; |
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print "# q: $q\n"; |
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return $q; |
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} |
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