Fix indexing for varlistent when not within a section

[exim-website.git] / script / gen

diff --git a/script/gen b/script/gen
index dc2926adeb7d9407f00a07367cfbdf53b6570641..58e399e8477376457e87a800a2ade71881fa78d6 100755 (executable)
--- a/script/gen
+++ b/script/gen
@@ -287,6 +287,7 @@ sub xref_fixup {
         my $section_counter = 0;
         foreach my $section ( $chapter->findnodes('section') ) {
             ++$section_counter;
+           $section->setAttribute( 'sectprefix', $section_counter );
 
             my $section_id = $section->getAttribute('id');
             unless ($section_id) {    # synthesise missing id
@@ -301,6 +302,31 @@ sub xref_fixup {
                 section_id    => $section_counter,
                 section_title => $section_title
             };
+
+           # 2022/07/07 jgh: added loop for sections under sections, which are resulting from the .subsection macro
+           # Add a "level" attribute to these nodes
+           ## Iterate over each subsection
+           my $subsec_counter = 0;
+           foreach my $subsection ( $section->findnodes('section') ) {
+             ++$subsec_counter;
+
+             $subsection->setAttribute( 'level', "2" );
+             $subsection->setAttribute( 'sectprefix', sprintf("%d.%d", $section_counter, $subsec_counter) );
+
+             my $subsec_id = $subsection->getAttribute('id');
+             unless ($subsec_id) {    # synthesise missing id
+                 $subsec_id = sprintf( 'section_noid_%04d_%04d_%04d', $chapter_counter, $section_counter, $subsec_counter );
+                 $subsection->setAttribute( 'id', $subsec_id );
+             }
+             my $subsec_title = $subsection->findvalue('title');
+
+             $index{$subsec_id} = {
+                 chapter_id    => $chapter_counter,
+                 chapter_title => $chapter_title,
+                 section_id    => $subsec_counter,
+                 section_title => $subsec_title
+             };
+           }
         }
     }
     ## Build indexes as new chapters
@@ -309,10 +335,11 @@ sub xref_fixup {
     ## Replace all of the xrefs in the XML
     foreach my $xref ( $xml->findnodes('//xref') ) {
         my $linkend = $xref->getAttribute('linkend');
+
         if ( exists $index{$linkend} ) {
-            $xref->setAttribute( 'chapter_id',    $index{$linkend}{'chapter_id'} );
+            $xref->setAttribute( 'chapter_id',    $index{$linkend}{'chapter_id'} ) if ( $index{$linkend}{'chapter_id'} );
             $xref->setAttribute( 'chapter_title', $index{$linkend}{'chapter_title'} );
-            $xref->setAttribute( 'section_id', $index{$linkend}{'section_id'} ) if ( $index{$linkend}{'section_id'} );
+            $xref->setAttribute( 'section_id',   $index{$linkend}{'section_id'} ) if ( $index{$linkend}{'section_id'} );
             $xref->setAttribute( 'section_title', $index{$linkend}{'section_title'} )
                 if ( $index{$linkend}{'section_title'} );
             $xref->setAttribute( 'url',
@@ -330,7 +357,9 @@ sub build_indexes {
     my $index_hash = {};
     my $seealso_hash = {};
     my $current_id;
-    foreach my $node ( $xml->findnodes('//section | //chapter | //indexterm') ) {
+    my $verterm_counter = 0;
+
+    foreach my $node ( $xml->findnodes('//section | //chapter | //varlistentry | //indexterm') ) {
         if ( $node->nodeName eq 'indexterm' ) {
             my $role      = $node->getAttribute('role') || 'concept';
             my $primary   = $node->findvalue('child::primary');
@@ -350,14 +379,49 @@ sub build_indexes {
            }
 
            else {
-# JGH 2022/07/01
-# The $current_id being pushed here is presumably the section, given where the
-# hyperlink end up pointing to.  For bug 2889 we'd like to have something more
-# precise; tha presumably requires an anchor at the indexed point?
-
                push @{ $index_hash->{$role}{$first}{$primary}{$secondary} }, $current_id;
            }
         }
+       elsif ( $node->nodeName eq 'varlistentry' ) {
+
+         foreach my $vitem ( $node->findnodes('listitem') ) {
+
+           # Add an anchorname xml attribute.
+           # chapter.xsl spots this and places a "<a id="{@anchorname}"> </a>"
+
+           my $anchorname = sprintf("vi%d", $verterm_counter++);
+           $vitem->setAttribute( 'anchorname', $anchorname );
+           $current_id = $anchorname;
+
+           # Set the latest indexable id to be picked up by the next indexterm,
+           # which should be in the content of the listitem
+
+           my ($chapter_title, $sec_id, $sec_title);
+
+           foreach my $chap ( $node->findnodes('ancestor::chapter') ) {
+             $chapter_title = $chap->findvalue('title');
+           }
+           next unless ($chapter_title);
+
+           # Search upward to find a subsection or section id & title
+           foreach my $ssec ( $node->findnodes("ancestor::section[\@level='2']") ) {
+             $sec_id = $ssec->getAttribute('id');
+             $sec_title = $ssec->findvalue('title');
+             last;
+           }
+           if (!defined($sec_id)) {
+             foreach my $sec ( $node->findnodes('ancestor::section') ) {
+               $sec_id = $sec->getAttribute('id');
+               $sec_title = $sec->findvalue('title');
+               last;
+             }
+           }
+
+           $xref->{$anchorname}{'chapter_title'} = $chapter_title;
+           $xref->{$anchorname}{'section_id'} = $anchorname;
+           $xref->{$anchorname}{'section_title'} = $sec_title if ($sec_title);
+         }
+       }
         else {
             $current_id = $node->getAttribute('id');
         }