Add two exportable utility functions:

xml_encode() is moved here from IRSpy::Record
irspy_xpath_context() is new, factored out of found.mc

diff --git a/lib/ZOOM/IRSpy.pm b/lib/ZOOM/IRSpy.pm
index dbe569a..e3c4be4 100644 (file)
--- a/lib/ZOOM/IRSpy.pm
+++ b/lib/ZOOM/IRSpy.pm
@@ -1,4 +1,4 @@
-# $Id: IRSpy.pm,v 1.34 2006-10-18 10:22:54 mike Exp $
+# $Id: IRSpy.pm,v 1.35 2006-10-20 14:49:11 mike Exp $
 
 package ZOOM::IRSpy;
 
@@ -6,7 +6,11 @@ use 5.008;
 use strict;
 use warnings;
 
-use Data::Dumper; # For debugging only
+use Exporter 'import';
+our @EXPORT_OK = qw(xml_encode irspy_xpath_context);
+
+use Data::Dumper;              # For debugging only
+use XML::LibXML::XPathContext;
 use ZOOM;
 use Net::Z3950::ZOOM 1.13;     # For the ZOOM version-check only
 use ZOOM::IRSpy::Node;
@@ -511,6 +515,37 @@ sub _next_sibling_test {
 }
 
 
+# Utility functions follow, exported for use of web UI
+
+# 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
+# says that it's not: among other things, XML::Generator and
+# Template::Plugin both roll their own.  So I will do likewise.  D'oh!
+#
+sub xml_encode {
+    my ($text) = @_;
+    $text =~ s/&/&/g;
+    $text =~ s/</&lt;/g;
+    $text =~ s/>/&gt;/g;
+    $text =~ s/['']/&apos;/g;
+    $text =~ s/[""]/&quot;/g;
+    return $text;
+}
+
+
+sub irspy_xpath_context {
+    my($zoom_record) = @_;
+
+    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/');
+    return $xc;
+}
+
+
 =head1 SEE ALSO
 
 ZOOM::IRSpy::Record,