feat: search in all headings (#740)

layouts/_partials/utils/extract-headings.html

@@ -0,0 +1,31 @@
+{{- /*
+Extracts all headings from a page and adds them to the scratchpad.
+
+The keys can be obtained from the scratchpad by using the "keys" key.
+The titles can be obtained from the scratchpad by using the "titles" key.
+
+The scratchpad must be initialized with empty slices before calling this function for the keys "keys" and "titles"
+
+@param {any} target The element to extract headings from.
+@param {any} scratch The scratchpad to add the keys and titles to.
+
+@example {{ partial "utils/extract-headings.html" (dict "target" $h1 "scratch" $s) }}
+*/ -}}
+
+{{- range $heading := index .target.Headings -}}
+  {{- if and (eq $heading.Level 0) (not $heading.Title) -}}
+    {{- $.scratch.Add "keys" (slice $heading.Title) -}}
+  {{- else -}}
+    {{- $key := (printf "%s#%s" $heading.ID $heading.Title) -}}
+    {{- $.scratch.Add "keys" (slice $key) -}}
+  {{- end -}}
+
+  {{- $title := (printf "<h%d>%s" $heading.Level $heading.Title) -}}
+  {{- $.scratch.Add "titles" (slice $title) -}}
+
+  {{- partial "utils/extract-headings.html" (dict
+    "target" $heading
+    "scratch" $.scratch
+    )
+  }}
+{{- end -}}

layouts/_partials/utils/fragments.html

@@ -40,26 +40,15 @@
 {{- $page := .context -}}
 {{- $type := .type | default "content" -}}
 
-{{- /* Initialize slices to store heading data */ -}}
+{{- /* Process all headings */ -}}
-{{- $headingKeys := slice -}}    {{- /* Keys for indexing (ID#Title or just Title) */ -}}
+{{- $s := newScratch -}}
-{{- $headingTitles := slice -}}  {{- /* HTML heading tags for content splitting */ -}}
+{{- $s.Set "keys" slice -}}
+{{- $s.Set "titles" slice -}}
 
-{{- /* Process all h1 headings and their nested h2 headings */ -}}
+{{- partial "utils/extract-headings.html" (dict "target" $page.Fragments "scratch" $s) -}}
-{{- range $h1 := $page.Fragments.Headings -}}
-  {{- /* Handle h1 headings - empty titles get special treatment */ -}}
-  {{- if eq $h1.Title "" -}}
-    {{- $headingKeys = $headingKeys | append $h1.Title -}}
-  {{- else -}}
-    {{- $headingKeys = $headingKeys | append (printf "%s#%s" $h1.ID $h1.Title) -}}
-  {{- end -}}
-  {{- $headingTitles = $headingTitles | append (printf "<h1>%s" $h1.Title) -}}
 
-  {{- /* Process nested h2 headings */ -}}
+{{- $headingKeys := $s.Get "keys" -}}
-  {{- range $h2 := $h1.Headings -}}
+{{- $headingTitles := $s.Get "titles" -}}
-    {{- $headingKeys = $headingKeys | append (printf "%s#%s" $h2.ID $h2.Title) -}}
-    {{- $headingTitles = $headingTitles | append (printf "<h2>%s" $h2.Title) -}}
-  {{- end -}}
-{{- end -}}
 
 {{- $content := $page.Content | htmlUnescape -}}
 {{- $len := len $headingKeys -}}
@@ -80,7 +69,7 @@
         {{ $data = $data | merge (dict $headingKey ($content | plainify | htmlUnescape | strings.TrimSpace)) }}
       {{ else }}
         {{ $parts := split $content (printf "%s" $headingTitle) }}
-        {{ $lastPart := index $parts (sub (len $parts) 1) | strings.TrimSpace }}
+        {{ $lastPart := index $parts (sub (len $parts) 1) }}
 
         {{ $data = $data | merge (dict $headingKey ($lastPart | plainify | htmlUnescape | strings.TrimSpace)) }}
         {{ $content = strings.TrimSuffix $lastPart $content }}