X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=lib%2FZOOM%2FIRSpy%2FUtils.pm;h=8ddbcab09a462af6f6f48db46565620b306105c7;hb=ebb088b4329aea6136f49ee5535f1e77544a4c68;hp=e232045bcd770bfc37f1cd7dc78010e82059ab1f;hpb=f792544b44ff2be33f76f4b13fa6b36a0f5c5a52;p=irspy-moved-to-github.git
diff --git a/lib/ZOOM/IRSpy/Utils.pm b/lib/ZOOM/IRSpy/Utils.pm
index e232045..8ddbcab 100644
--- a/lib/ZOOM/IRSpy/Utils.pm
+++ b/lib/ZOOM/IRSpy/Utils.pm
@@ -1,4 +1,4 @@
-# $Id: Utils.pm,v 1.7 2006-11-07 17:45:37 mike Exp $
+# $Id: Utils.pm,v 1.11 2006-11-13 18:03:34 mike Exp $
package ZOOM::IRSpy::Utils;
@@ -36,16 +36,35 @@ sub xml_encode {
}
+# 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) = @_;
+
+ 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) = @_;
- my $xml = $zoom_record->render();
+ my $xml = ref $record ? $record->render() : $record;
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 => $IRSPY_NS);
+ foreach my $prefix (keys %_namespaces) {
+ $xc->registerNs($prefix, $_namespaces{$prefix});
+ }
return $xc;
}
@@ -68,7 +87,7 @@ sub modify_xml_document {
if ($value ne $node->getValue()) {
$node->setValue($value);
$nchanges++;
- print "Attr $key: '", $node->getValue(), "' -> '$value' ($xpath)
\n";
+ #print "Attr $key: '", $node->getValue(), "' -> '$value' ($xpath)
\n";
}
} elsif ($node->isa("XML::LibXML::Element")) {
# The contents could be any mixture of text and
@@ -93,7 +112,7 @@ sub modify_xml_document {
my $child = new XML::LibXML::Text($value);
$node->appendChild($child);
$nchanges++;
- print "Elem $key: '$old' -> '$value' ($xpath)
\n";
+ #print "Elem $key: '$old' -> '$value' ($xpath)
\n";
} else {
warn "unexpected node type $node";
}
@@ -102,7 +121,7 @@ sub modify_xml_document {
next if !$value; # No need to create a new empty node
my($ppath, $element) = $xpath =~ /(.*)\/(.*)/;
dom_add_element($xc, $ppath, $element, $value, @addAfter);
- print "Add $key ($xpath) = '$value'
\n";
+ #print "New $key ($xpath) = '$value'
\n";
$nchanges++;
}
}
@@ -114,23 +133,21 @@ sub modify_xml_document {
sub dom_add_element {
my($xc, $ppath, $element, $value, @addAfter) = @_;
- print "Adding '$value' at '$ppath' after (", join(", ", map { "'$_'" } @addAfter), ")
\n";
- my @nodes = $xc->findnodes($ppath);
- if (@nodes == 0) {
- # Oh dear, the parent node doesn't exist. We could make it,
- # but for now let's not and say we did.
- warn "no parent node '$ppath': not adding '$element'='$value'";
- return;
- }
- warn scalar(@nodes), " nodes match parent '$ppath'" if @nodes > 1;
- my $node = $nodes[0];
+ #print "Adding $element='$value' at '$ppath' after (", join(", ", map { "'$_'" } @addAfter), ")
\n";
+ my $node = find_or_make_node($xc, $ppath, 0);
+ return if !defined $node; ### should be a "can't happen"
- my $new = new XML::LibXML::Text($value);
+ my(undef, $prefix, $nsElem) = $element =~ /((.*?):)?(.*)/;
+ my $new = new XML::LibXML::Element($nsElem);
+ $new->setNamespace(irspy_namespace($prefix), $prefix)
+ if $prefix ne "";
+
+ $new->appendText($value);
foreach my $predecessor (reverse @addAfter) {
my($child) = $xc->findnodes($predecessor, $node);
if (defined $child) {
$node->insertAfter($new, $child);
- print "Added after '$predecessor'\n";
+ #print "Added after '$predecessor'
\n";
return;
}
}
@@ -142,10 +159,10 @@ sub dom_add_element {
my @children = $node->childNodes();
if (@children) {
$node->insertBefore($new, $children[0]);
- print "Added new first child\n";
+ #print "Added new first child
\n";
} else {
$node->appendChild($new);
- print "Added new only child\n";
+ #print "Added new only child
\n";
}
if (0) {
@@ -156,6 +173,32 @@ sub dom_add_element {
}
+sub find_or_make_node {
+ my($xc, $path, $recursion_level) = @_;
+
+ die "deep recursion in find_or_make_node($path)"
+ if $recursion_level == 10;
+
+ my @nodes = $xc->findnodes($path);
+ if (@nodes == 0) {
+ # Oh dear, the parent node doesn't exist. We could make it,
+ my($ppath, $element) = $path =~ /(.*)\/(.*)/;
+ warn "no node '$path': making it";
+ my $parent = find_or_make_node($xc, $ppath, $recursion_level-1);
+
+ my(undef, $prefix, $nsElem) = $element =~ /((.*?):)?(.*)/;
+ my $new = new XML::LibXML::Element($nsElem);
+ $new->setNamespace(irspy_namespace($prefix), $prefix)
+ if $prefix ne "";
+
+ $parent->appendChild($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;