X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;ds=sidebyside;f=lib%2FZOOM%2FIRSpy%2FUtils.pm;h=2f760456a343d58642d665c669e60db6a3387749;hb=6ae25ea69c0e8da30fc8c2c75c273dcaa03194ca;hp=c1399950d87cbfcba28c33ef71068bc3814ec11d;hpb=01db8593a91d42a9dc554edc17d0c2c1b3858ef5;p=irspy-moved-to-github.git
diff --git a/lib/ZOOM/IRSpy/Utils.pm b/lib/ZOOM/IRSpy/Utils.pm
index c139995..2f76045 100644
--- a/lib/ZOOM/IRSpy/Utils.pm
+++ b/lib/ZOOM/IRSpy/Utils.pm
@@ -1,4 +1,3 @@
-# $Id: Utils.pm,v 1.2 2006-10-30 16:13:49 mike Exp $
package ZOOM::IRSpy::Utils;
@@ -6,11 +5,126 @@ use 5.008;
use strict;
use warnings;
+use Scalar::Util;
+
use Exporter 'import';
-our @EXPORT_OK = qw(xml_encode irspy_xpath_context);
+our @EXPORT_OK = qw(utf8param
+ trimField
+ utf8paramTrim
+ isodate
+ xml_encode
+ cql_quote
+ cql_target
+ irspy_xpath_context
+ irspy_make_identifier
+ irspy_record2identifier
+ irspy_identifier2target
+ modify_xml_document
+ bib1_access_point
+ render_record
+ calc_reliability_string
+ calc_reliability_stats);
+
+use XML::LibXML;
+use XML::LibXML::XPathContext;
+use Encode;
+use Encode qw(is_utf8);
+
+
+our $IRSPY_NS = 'http://indexdata.com/irspy/1.0';
+
+# Under Apache 2/mod_perl 2, the ubiquitous $r is no longer and
+# Apache::Request object, nor even an Apache2::Request, but an
+# Apache2::RequestReq ... which, astonishingly, doesn't have the
+# param() method. So if we're given one of these things, we need to
+# make an Apache::Request out of, which at least isn't too hard.
+# However *sigh* this may not be a cheap operation, so we keep a cache
+# of already-made Request objects.
+#
+my %_apache2request;
+my %_paramsbyrequest; # Used for Apache2 only
+sub utf8param {
+ my($r, $key, $value) = @_;
+
+ if ($r->isa('Apache2::RequestRec')) {
+ # Running under Apache2
+ if (defined $_apache2request{$r}) {
+ #warn "using existing Apache2::RequestReq for '$r'";
+ $r = $_apache2request{$r};
+ } else {
+ require Apache2::Request;
+ #warn "making new Apache2::RequestReq for '$r'";
+ $r = $_apache2request{$r} = new Apache2::Request($r);
+ }
+ }
+
+ if (!defined $key) {
+ return map { decode_utf8($_) } $r->param();
+ }
+ my $raw = undef;
+ $raw = $_paramsbyrequest{$r}->{$key} if $r->isa('Apache2::Request');
+ $raw = $r->param($key) if !defined $raw;
+
+ if (defined $value) {
+ # Argh! Simply writing through to the underlying method
+ # param() won't work in Apache2, where param() is readonly.
+ # So we have to keep a hash of additional values, which we
+ # consult (above) before the actual parameters. Ouch ouch.
+ if ($r->isa('Apache2::Request')) {
+ $_paramsbyrequest{$r}->{$key} = encode_utf8($value);
+ } else {
+ $r->param($key, encode_utf8($value));
+ }
+ }
+
+ return undef if !defined $raw;
+ my $cooked = decode_utf8($raw);
+ warn "converted '$raw' to '", $cooked, "'\n" if $cooked ne $raw;
+ return $cooked;
+}
# Utility functions follow, exported for use of web UI
+sub utf8param_apache1 {
+ my($r, $key, $value) = @_;
+ die "utf8param() called with value '$value'" if defined $value;
+
+ my $raw = $r->param($key);
+ return undef if !defined $raw;
+ my $cooked = decode_utf8($raw);
+ warn "converted '$raw' to '", $cooked, "'\n" if $cooked ne $raw;
+ return $cooked;
+}
+
+
+sub isodate {
+ my($time) = @_;
+
+ my($sec, $min, $hour, $mday, $mon, $year) = localtime($time);
+ return sprintf("%04d-%02d-%02dT%02d:%02d:%02d",
+ $year+1900, $mon+1, $mday, $hour, $min, $sec);
+}
+
+# strips whitespaces at start and ends of a field
+sub trimField {
+ my $field = shift;
+
+ $field =~ s/^\s+//;
+ $field =~ s/\s+$//;
+
+ return $field;
+}
+
+# utf8param() with trim
+sub utf8paramTrim {
+ my $result = utf8param(@_);
+
+ if (defined $result) {
+ $result = trimField($result);
+ }
+
+ return $result;
+}
# I can't -- just can't, can't, can't -- believe that this function
# isn't provided by one of the core XML modules. But the evidence all
@@ -18,28 +132,693 @@ our @EXPORT_OK = qw(xml_encode irspy_xpath_context);
# Template::Plugin both roll their own. So I will do likewise. D'oh!
#
sub xml_encode {
- my ($text) = @_;
+ my($text, $fallback, $opts) = @_;
+ if (!defined $opts && ref $fallback) {
+ # The second and third arguments are both optional
+ $opts = $fallback;
+ $fallback = undef;
+ }
+ $opts = {} if !defined $opts;
+
+ $text = $fallback if !defined $text;
+ use Carp;
+ confess "xml_encode(): text and fallback both undefined"
+ if !defined $text;
+
$text =~ s/&/&/g;
$text =~ s/</g;
$text =~ s/>/>/g;
- $text =~ s/['']/'/g;
+ # Internet Explorer can't display ' (!) so don't create it
+ #$text =~ s/['']/'/g;
$text =~ s/[""]/"/g;
+ $text =~ s/ / /g if $opts->{nbsp};
+
return $text;
}
+# Quotes a term for use in a CQL query
+sub cql_quote {
+ my($term) = @_;
+
+ $term =~ s/([""\\*?])/\\$1/g;
+ $term = qq["$term"] if $term =~ /[\s""\/]/;
+ return $term;
+}
+
+
+# Makes a CQL query that finds a specified target. Arguments may be
+# either an ID alone, or a (host, port, db) triple.
+sub cql_target {
+ my($protocol, $host, $port, $db) = @_;
+
+ my $id;
+ if (defined $host) {
+ $id = irspy_make_identifier($protocol, $host, $port, $db);
+ } else {
+ $id = $protocol;
+ }
+
+ return "rec.id=" . cql_quote($id);
+}
+
+
+# PRIVATE to irspy_namespace() and irspy_xpath_context()
+my %_namespaces = (
+ e => 'http://explain.z3950.org/dtd/2.0/',
+ i => $IRSPY_NS,
+ );
+
+
+sub irspy_namespace {
+ my($prefix) = @_;
+
+ use Carp;
+ confess "irspy_namespace(undef)" if !defined $prefix;
+ my $uri = $_namespaces{$prefix};
+ die "irspy_namespace(): no URI for namespace prefix '$prefix'"
+ if !defined $uri;
+
+ return $uri;
+}
+
+
sub irspy_xpath_context {
- my($zoom_record) = @_;
+ my($record) = @_;
+
+ if (ref $record && $record->isa("ZOOM::Record")) {
+ $record = $record->render();
+ }
+
+ my $root;
+ if (ref $record) {
+ $root = $record;
+ } else {
+ my $parser = new XML::LibXML();
+ my $doc = $parser->parse_string($record);
+ $root = $doc->getDocumentElement();
+ }
- my $xml = $zoom_record->render();
- my $parser = new XML::LibXML();
- my $doc = $parser->parse_string($xml);
- my $root = $doc->getDocumentElement();
my $xc = XML::LibXML::XPathContext->new($root);
- $xc->registerNs(e => 'http://explain.z3950.org/dtd/2.0/');
- $xc->registerNs(i => $ZOOM::IRSpy::irspy_ns);
+ foreach my $prefix (keys %_namespaces) {
+ $xc->registerNs($prefix, $_namespaces{$prefix});
+ }
return $xc;
}
+# Construct an opaque identifier from its components. Although it's
+# trivial, this is needed in so many places that it really needs to be
+# factored out.
+#
+# This is the converse of _parse_target_string() in IRSpy.pm, which
+# should be renamed and moved into this package.
+#
+sub irspy_make_identifier {
+ my($protocol, $host, $port, $dbname) = @_;
+
+ die "irspy_make_identifier(" . join(", ", map { "'$_'" } @_).
+ "): wrong number of arguments" if @_ != 4;
+
+ die "irspy_make_identifier(): protocol undefined" if !defined $protocol;
+ die "irspy_make_identifier(): host undefined" if !defined $host;
+ die "irspy_make_identifier(): port undefined" if !defined $port;
+ die "irspy_make_identifier(): dbname undefined" if !defined $dbname;
+
+ return "$protocol:$host:$port/$dbname";
+}
+
+
+# Returns the opaque identifier of an IRSpy record based on the
+# XPathContext'ed DOM object, as returned by irspy_xpath_context().
+# This is doing the same thing as irspy_make_identifier() but from a
+# record rather than a set of parameters.
+#
+sub irspy_record2identifier {
+ my($xc) = @_;
+
+ ### Must be kept the same as is used in ../../../zebra/*.xsl
+ return $xc->find("concat(e:serverInfo/\@protocol, ':',
+ e:serverInfo/e:host, ':',
+ e:serverInfo/e:port, '/',
+ e:serverInfo/e:database)");
+}
+
+
+# Transforms an IRSpy opqaue identifier, as returned from
+# irspy_make_identifier() or irspy_record2identifier(), into a YAZ
+# target-string suitable for feeding to ZOOM. Before we introduced
+# the protocol element at the start of the identifier string, this was
+# a null transform; now we have to be a bit cleverer.
+#
+sub irspy_identifier2target {
+ my $res = _irspy_identifier2target(@_);
+ #carp "converted ID '@_' to target '$res'";
+ return $res;
+}
+
+sub _irspy_identifier2target {
+ my($id) = @_;
+
+ confess "_irspy_identifier2target(): id is undefined"
+ if !defined $id;
+
+ my($protocol, $target) = ($id =~ /(.*?):(.*)/);
+ if (uc($protocol) eq "Z39.50" || uc($protocol) eq "TCP") {
+ return "tcp:$target";
+ } elsif (uc($protocol) eq "SRU") {
+ return "sru=get,http:$target";
+ } elsif (uc($protocol) eq "SRW") {
+ return "sru=srw,http:$target";
+ }
+
+ warn "_irspy_identifier2target($id): unrecognised protocol '$protocol'";
+ return $target;
+}
+
+
+# Modifies the XML document for which $xc is an XPath context by
+# inserting or replacing the values specified in the hash %$data. The
+# keys are fieldnames, which are looked up in the register
+# $fieldsByKey to determine, among other things, what their XPath is.
+
+sub modify_xml_document {
+ my($xc, $fieldsByKey, $data) = @_;
+
+ my @changes = ();
+ foreach my $key (keys %$data) {
+ my $value = $data->{$key};
+ my $ref = $fieldsByKey->{$key} or die "no field '$key'";
+ my($name, $nlines, $caption, $xpath, @addAfter) = @$ref;
+ #print "Considering $key='$value' ($xpath)
\n";
+ my @nodes = $xc->findnodes($xpath);
+ if (@nodes) {
+ warn scalar(@nodes), " nodes match '$xpath'" if @nodes > 1;
+ my $node = $nodes[0];
+
+ if ($node->isa("XML::LibXML::Attr")) {
+ if ($value ne $node->getValue()) {
+ $node->setValue($value);
+ push @changes, $ref;
+ #print "Attr $key: '", $node->getValue(), "' -> '$value' ($xpath)
\n";
+ }
+ } elsif ($node->isa("XML::LibXML::Element")) {
+ # The contents could be any mixture of text and
+ # comments and maybe even other crud such as processing
+ # instructions. The simplest thing is just to throw it all
+ # away and start again, making a single Text node the
+ # canonical representation. But before we do that,
+ # we'll check whether the element is already
+ # canonical, to determine whether our change is a
+ # no-op.
+ my $old = "";
+ my @children = $node->childNodes();
+ if (@children == 1) {
+ my $child = $node->firstChild();
+ if (ref $child && ref $child eq "XML::LibXML::Text") {
+ $old = $child->getData();
+ #print STDERR "child='$child', old=", _renderchars($old), "\n" if $key eq "title";
+ }
+ }
+ next if $value eq $old;
+
+ $node->removeChildNodes();
+ my $child = new XML::LibXML::Text($value);
+ $node->appendChild($child);
+ push @changes, $ref;
+ #print STDERR "Elem $key ($xpath): ", _renderchars($old), " -> '", _renderchars($value), "\n";
+ } else {
+ warn "unexpected node type $node";
+ }
+
+ } else {
+ next if !defined $value; # No need to create a new empty node
+ my($ppath, $selector) = $xpath =~ /(.*)\/(.*)/;
+ dom_add_node($xc, $ppath, $selector, $value, @addAfter);
+ #print "New $key ($xpath) = '$value'
\n";
+ push @changes, $ref;
+ }
+ }
+
+ return @changes;
+}
+
+
+sub _renderchars {
+ my($text) = @_;
+
+ return "'" . $text . "'", " (", join(" ", map {ord($_)} split //, $text), "), is_utf8=" , is_utf8($text);
+}
+
+
+sub dom_add_node {
+ my($xc, $ppath, $selector, $value, @addAfter) = @_;
+
+ #print "Adding $selector='$value' at '$ppath' after (", join(", ", map { "'$_'" } @addAfter), ")
\n";
+ my $node = find_or_make_node($xc, $ppath, 0);
+ die "couldn't find or make node '$node'" if !defined $node;
+
+ my $is_attr = ($selector =~ s/^@//);
+ my(undef, $prefix, $simpleSel) = $selector =~ /((.*?):)?(.*)/;
+ #warn "selector='$selector', prefix='$prefix', simpleSel='$simpleSel'";
+ if ($is_attr) {
+ if (defined $prefix) {
+ ### This seems to no-op (thank, DOM!) but I have have no
+ # idea, and it's not needed for IRSpy, so I am not going
+ # to debug it now.
+ $node->setAttributeNS(irspy_namespace($prefix),
+ $simpleSel, $value);
+ } else {
+ $node->setAttribute($simpleSel, $value);
+ }
+ return;
+ }
+
+ my $new = new XML::LibXML::Element($simpleSel);
+ $new->setNamespace(irspy_namespace($prefix), $prefix)
+ if defined $prefix;
+
+ $new->appendText($value);
+ foreach my $predecessor (reverse @addAfter) {
+ my($child) = $xc->findnodes($predecessor, $node);
+ if (defined $child) {
+ $node->insertAfter($new, $child);
+ #warn "Added after '$predecessor'";
+ return;
+ }
+ }
+
+ # Didn't find any of the nodes that are supposed to precede the
+ # new one, so we need to insert the new node as the first of the
+ # parent's children. However *sigh* there is no prependChild()
+ # analogous to appendChild(), so we have to go the long way round.
+ my @children = $node->childNodes();
+ if (@children) {
+ $node->insertBefore($new, $children[0]);
+ #warn "Added new first child";
+ } else {
+ $node->appendChild($new);
+ #warn "Added new only child";
+ }
+
+ if (0) {
+ my $text = xml_encode(inheritance_tree($xc));
+ $text =~ s/\n/
$&/sg;
+ print "
$text\n"; + } +} + + +sub find_or_make_node { + my($xc, $path, $recursion_level) = @_; + + die "deep recursion in find_or_make_node($path)" + if $recursion_level == 10; + $path = "." if $path eq ""; + + my @nodes = $xc->findnodes($path); + if (@nodes == 0) { + # Oh dear, the parent node doesn't exist. We could make it, + my(undef, $ppath, $element) = $path =~ /((.*)\/)?(.*)/; + $ppath = "" if !defined $ppath; + #warn "path='$path', ppath='$ppath', element='$element'"; + #warn "no node '$path': making it"; + my $parent = find_or_make_node($xc, $ppath, $recursion_level-1); + + my(undef, $prefix, $nsElem) = $element =~ /((.*?):)?(.*)/; + #warn "element='$element', prefix='$prefix', nsElem='$nsElem'"; + my $new = new XML::LibXML::Element($nsElem); + if (defined $prefix) { + #warn "setNamespace($prefix)"; + $new->setNamespace(irspy_namespace($prefix), $prefix); + } + + $parent->appendChild($new); + return $new; + } + warn scalar(@nodes), " nodes match parent '$path'" if @nodes > 1; + return $nodes[0]; +} + + +sub inheritance_tree { + my($type, $level) = @_; + $level = 0 if !defined $level; + return "Woah! Too deep, man!\n" if $level > 20; + + $type = ref $type if ref $type; + my $text = ""; + $text = "--> " if $level == 0; + $text .= ("\t" x $level) . "$type\n"; + my @ISA = eval "\@${type}::ISA"; + foreach my $superclass (@ISA) { + $text .= inheritance_tree($superclass, $level+1); + } + + return $text; +} + + +# This function is made available in xslt using the register_function call +sub xslt_strcmp { + my ($arg1, $arg2) = @_; + return "$arg1" cmp "$arg2"; +} + + +### It feels like this should be in YAZ, exported via ZOOM-Perl. +my %_bib1_access_point = ( + 1 => "Personal name", + 2 => "Corporate name", + 3 => "Conference name", + 4 => "Title", + 5 => "Title series", + 6 => "Title uniform", + 7 => "ISBN", + 8 => "ISSN", + 9 => "LC card number", + 10 => "BNB card no.", + 11 => "BGF number", + 12 => "Local number", + 13 => "Dewey classification", + 14 => "UDC classification", + 15 => "Bliss classification", + 16 => "LC call number", + 17 => "NLM call number", + 18 => "NAL call number", + 19 => "MOS call number", + 20 => "Local classification", + 21 => "Subject heading", + 22 => "Subject Rameau", + 23 => "BDI index subject", + 24 => "INSPEC subject", + 25 => "MESH subject", + 26 => "PA subject", + 27 => "LC subject heading", + 28 => "RVM subject heading", + 29 => "Local subject index", + 30 => "Date", + 31 => "Date of publication", + 32 => "Date of acquisition", + 33 => "Title key", + 34 => "Title collective", + 35 => "Title parallel", + 36 => "Title cover", + 37 => "Title added title page", + 38 => "Title caption", + 39 => "Title running", + 40 => "Title spine", + 41 => "Title other variant", + 42 => "Title former", + 43 => "Title abbreviated", + 44 => "Title expanded", + 45 => "Subject precis", + 46 => "Subject rswk", + 47 => "Subject subdivision", + 48 => "No. nat'l biblio.", + 49 => "No. legal deposit", + 50 => "No. govt pub.", + 51 => "No. music publisher", + 52 => "Number db", + 53 => "Number local call", + 54 => "Code--language", + 55 => "Code--geographic area", + 56 => "Code--institution", + 57 => "Name and title *", + 58 => "Name geographic", + 59 => "Place publication", + 60 => "CODEN", + 61 => "Microform generation", + 62 => "Abstract", + 63 => "Note", + 1000 => "Author-title", + 1001 => "Record type", + 1002 => "Name", + 1003 => "Author", + 1004 => "Author-name personal", + 1005 => "Author-name corporate", + 1006 => "Author-name conference", + 1007 => "Identifier--standard", + 1008 => "Subject--LC children's", + 1009 => "Subject name -- personal", + 1010 => "Body of text", + 1011 => "Date/time added to db", + 1012 => "Date/time last modified", + 1013 => "Authority/format id", + 1014 => "Concept-text", + 1015 => "Concept-reference", + 1016 => "Any", + 1017 => "Server-choice", + 1018 => "Publisher", + 1019 => "Record-source", + 1020 => "Editor", + 1021 => "Bib-level", + 1022 => "Geographic-class", + 1023 => "Indexed-by", + 1024 => "Map-scale", + 1025 => "Music-key", + 1026 => "Related-periodical", + 1027 => "Report-number", + 1028 => "Stock-number", + 1030 => "Thematic-number", + 1031 => "Material-type", + 1032 => "Doc-id", + 1033 => "Host-item", + 1034 => "Content-type", + 1035 => "Anywhere", + 1036 => "Author-Title-Subject", + 1032 => "Doc-id (semantic definition change)", + 1037 => "SICI", + 1038 => "Abstract-language", + 1039 => "Application-kind", + 1040 => "Classification", + 1041 => "Classification-basic", + 1042 => "Classification-local-record", + 1043 => "Enzyme", + 1044 => "Possessing-institution", + 1045 => "Record-linking", + 1046 => "Record-status", + 1047 => "Treatment", + 1048 => "Control-number-GKD", + 1049 => "Control-number-linking", + 1050 => "Control-number-PND", + 1051 => "Control-number-SWD", + 1052 => "Control-number-ZDB", + 1053 => "Country-publication (country of Publication)", + 1054 => "Date-conference (meeting date)", + 1055 => "Date-record-status", + 1056 => "Dissertation-information", + 1057 => "Meeting-organizer", + 1058 => "Note-availability", + 1059 => "Number-CAS-registry (CAS registry number)", + 1060 => "Number-document (document number)", + 1061 => "Number-local-accounting", + 1062 => "Number-local-acquisition", + 1063 => "Number-local-call-copy-specific", + 1064 => "Number-of-reference (reference count)", + 1065 => "Number-norm", + 1066 => "Number-volume", + 1067 => "Place-conference (meeting location)", + 1068 => "Reference (references and footnotes)", + 1069 => "Referenced-journal (reference work)", + 1070 => "Section-code", + 1071 => "Section-heading", + 1072 => "Subject-GOO", + 1073 => "Subject-name-conference", + 1074 => "Subject-name-corporate", + 1075 => "Subject-genre/form", + 1076 => "Subject-name-geographical", + 1077 => "Subject--chronological", + 1078 => "Subject--title", + 1079 => "Subject--topical", + 1080 => "Subject-uncontrolled", + 1081 => "Terminology-chemical (chemical name)", + 1082 => "Title-translated", + 1083 => "Year-of-beginning", + 1084 => "Year-of-ending", + 1085 => "Subject-AGROVOC", + 1086 => "Subject-COMPASS", + 1087 => "Subject-EPT", + 1088 => "Subject-NAL", + 1089 => "Classification-BCM", + 1090 => "Classification-DB", + 1091 => "Identifier-ISRC", + 1092 => "Identifier-ISMN", + 1093 => "Identifier-ISRN", + 1094 => "Identifier-DOI", + 1095 => "Code-language-original", + 1096 => "Title-later", + 1097 => "DC-Title", + 1098 => "DC-Creator", + 1099 => "DC-Subject", + 1100 => "DC-Description", + 1101 => "DC-Publisher", + 1102 => "DC-Date", + 1103 => "DC-ResourceType", + 1104 => "DC-ResourceIdentifier", + 1105 => "DC-Language", + 1106 => "DC-OtherContributor", + 1107 => "DC-Format", + 1108 => "DC-Source", + 1109 => "DC-Relation", + 1110 => "DC-Coverage", + 1111 => "DC-RightsManagement", + 1112 => "Controlled Subject Index", + 1113 => "Subject Thesaurus", + 1114 => "Index Terms -- Controlled", + 1115 => "Controlled Term", + 1116 => "Spatial Domain", + 1117 => "Bounding Coordinates", + 1118 => "West Bounding Coordinate", + 1119 => "East Bounding Coordinate", + 1120 => "North Bounding Coordinate", + 1121 => "South Bounding Coordinate", + 1122 => "Place", + 1123 => "Place Keyword Thesaurus", + 1124 => "Place Keyword", + 1125 => "Time Period", + 1126 => "Time Period Textual", + 1127 => "Time Period Structured", + 1128 => "Beginning Date", + 1129 => "Ending Date", + 1130 => "Availability", + 1131 => "Distributor", + 1132 => "Distributor Name", + 1133 => "Distributor Organization", + 1134 => "Distributor Street Address", + 1135 => "Distributor City", + 1136 => "Distributor State or Province", + 1137 => "Distributor Zip or Postal Code", + 1138 => "Distributor Country", + 1139 => "Distributor Network Address", + 1140 => "Distributor Hours of Service", + 1141 => "Distributor Telephone", + 1142 => "Distributor Fax", + 1143 => "Resource Description", + 1144 => "Order Process", + 1145 => "Order Information", + 1146 => "Cost", + 1147 => "Cost Information", + 1148 => "Technical Prerequisites", + 1149 => "Available Time Period", + 1150 => "Available Time Textual", + 1151 => "Available Time Structured", + 1152 => "Available Linkage", + 1153 => "Linkage Type", + 1154 => "Linkage", + 1155 => "Sources of Data", + 1156 => "Methodology", + 1157 => "Access Constraints", + 1158 => "General Access Constraints", + 1159 => "Originator Dissemination Control", + 1160 => "Security Classification Control", + 1161 => "Use Constraints", + 1162 => "Point of Contact", + 1163 => "Contact Name", + 1164 => "Contact Organization", + 1165 => "Contact Street Address", + 1166 => "Contact City", + 1167 => "Contact State or Province", + 1168 => "Contact Zip or Postal Code", + 1169 => "Contact Country", + 1170 => "Contact Network Address", + 1171 => "Contact Hours of Service", + 1172 => "Contact Telephone", + 1173 => "Contact Fax", + 1174 => "Supplemental Information", + 1175 => "Purpose", + 1176 => "Agency Program", + 1177 => "Cross Reference", + 1178 => "Cross Reference Title", + 1179 => "Cross Reference Relationship", + 1180 => "Cross Reference Linkage", + 1181 => "Schedule Number", + 1182 => "Original Control Identifier", + 1183 => "Language of Record", + 1184 => "Record Review Date", + 1185 => "Performer", + 1186 => "Performer-Individual", + 1187 => "Performer-Group", + 1188 => "Instrumentation", + 1189 => "Instrumentation-Original", + 1190 => "Instrumentation-Current", + 1191 => "Arrangement", + 1192 => "Arrangement-Original", + 1193 => "Arrangement-Current", + 1194 => "Musical Key-Original", + 1195 => "Musical Key-Current", + 1196 => "Date-Composition", + 1197 => "Date-Recording", + 1198 => "Place-Recording", + 1199 => "Country-Recording", + 1200 => "Number-ISWC", + 1201 => "Number-Matrix", + 1202 => "Number-Plate", + 1203 => "Classification-McColvin", + 1204 => "Duration", + 1205 => "Number-Copies", + 1206 => "Musical Theme", + 1207 => "Instruments - total number", + 1208 => "Instruments - distinct number", + 1209 => "Identifier - URN", + 1210 => "Sears Subject Heading", + 1211 => "OCLC Number", + 1212 => "Composition", + 1213 => "Intellectual level", + 1214 => "EAN", + 1215 => "NLC", + 1216 => "CRCS", + 1217 => "Nationality", + 1218 => "Equinox", + 1219 => "Compression", + 1220 => "Format", + 1221 => "Subject - occupation", + 1222 => "Subject - function", + 1223 => "Edition", +); + +sub bib1_access_point { + my($ap) = @_; + + return $_bib1_access_point{$ap} || + "unknown BIB-1 attribute '$ap'"; +} + + +sub render_record { + my($rs, $which, $elementSetName) = @_; + + # There is a slight race condition here on the element-set name, + # but it shouldn't be a problem as this is (currently) only called + # from parts of the program that run single-threaded. + my $old = $rs->option(elementSetName => $elementSetName); + my $rec = $rs->record($which); + $rs->option(elementSetName => $old); + + return $rec->render(); +} + + +sub calc_reliability_string { + my($xc) = @_; + + my($nok, $nall, $percent) = calc_reliability_stats($xc); + return "[untested]" if $nall == 0; + return "$nok/$nall = " . $percent . "%"; +} + + +sub calc_reliability_stats { + my($xc) = @_; + + my @allpings = $xc->findnodes("i:status/i:probe"); + my $nall = @allpings; + return (0, 0, 0) if $nall == 0; + my @okpings = $xc->findnodes('i:status/i:probe[@ok = "1"]'); + my $nok = @okpings; + my $percent = int(100*$nok/$nall + 0.5); + return ($nok, $nall, $percent); +} + + 1;