94 lines
3.7 KiB
HTML
94 lines
3.7 KiB
HTML
|
{{- $headers := findRE "<h[1-4].*?>(.|\n])+?</h[1-4]>" .Content -}}
|
||
|
|
{{- $has_headers := ge (len $headers) 1 -}}
|
||
|
|
{{- if $has_headers -}}
|
||
|
|
|
||
|
|
{{- $largest := 6 -}}
|
||
|
|
{{- range $headers -}}
|
||
|
|
{{- $headerLevel := index (findRE "[1-4]" . 1) 0 -}}
|
||
|
|
{{- $headerLevel := len (seq $headerLevel) -}}
|
||
|
|
{{- if lt $headerLevel $largest -}}
|
||
|
|
{{- $largest = $headerLevel -}}
|
||
|
|
{{- end -}}
|
||
|
|
{{- end -}}
|
||
|
|
|
||
|
|
{{- $firstHeaderLevel := len (seq (index (findRE "[1-4]" (index $headers 0) 1) 0)) -}}
|
||
|
|
|
||
|
|
{{- $.Scratch.Set "bareul" slice -}}
|
||
|
|
<details id="TableOfContents" class="px-4 mt-4 bg-gray-100 dark:bg-gray-700 rounded toc">
|
||
|
|
<summary class="flex items-center font-bold py-2 px-4 cursor-pointer justify-between select-none text-black dark:text-white">
|
||
|
|
<span>Table of contents</span>
|
||
|
|
<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-chevron-down" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
|
||
|
|
<path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
|
||
|
|
<polyline points="6 9 12 15 18 9"></polyline>
|
||
|
|
</svg>
|
||
|
|
</summary>
|
||
|
|
|
||
|
|
<ul class="mt-2 pb-4">
|
||
|
|
{{- range seq (sub $firstHeaderLevel $largest) -}}
|
||
|
|
<ul>
|
||
|
|
{{- $.Scratch.Add "bareul" (sub (add $largest .) 1) -}}
|
||
|
|
{{- end -}}
|
||
|
|
{{- range $i, $header := $headers -}}
|
||
|
|
{{- $headerLevel := index (findRE "[1-4]" . 1) 0 -}}
|
||
|
|
{{- $headerLevel := len (seq $headerLevel) -}}
|
||
|
|
|
||
|
|
{{/* get id="xyz" */}}
|
||
|
|
{{ $id := index (findRE "(id=\"(.*?)\")" $header 9) 0 }}
|
||
|
|
|
||
|
|
{{/* strip id="" to leave xyz (no way to get regex capturing groups in hugo :( */}}
|
||
|
|
{{ $cleanedID := replace (replace $id "id=\"" "") "\"" "" }}
|
||
|
|
{{- $header := replaceRE "<h[1-4].*?>((.|\n])+?)</h[1-4]>" "$1" $header -}}
|
||
|
|
|
||
|
|
{{- if ne $i 0 -}}
|
||
|
|
{{- $prevHeaderLevel := index (findRE "[1-4]" (index $headers (sub $i 1)) 1) 0 -}}
|
||
|
|
{{- $prevHeaderLevel := len (seq $prevHeaderLevel) -}}
|
||
|
|
{{- if gt $headerLevel $prevHeaderLevel -}}
|
||
|
|
{{- range seq $prevHeaderLevel (sub $headerLevel 1) -}}
|
||
|
|
<ul>
|
||
|
|
{{/* the first should not be recorded */}}
|
||
|
|
{{- if ne $prevHeaderLevel . -}}
|
||
|
|
{{- $.Scratch.Add "bareul" . -}}
|
||
|
|
{{- end -}}
|
||
|
|
{{- end -}}
|
||
|
|
{{- else -}}
|
||
|
|
</li>
|
||
|
|
{{- if lt $headerLevel $prevHeaderLevel -}}
|
||
|
|
{{- range seq (sub $prevHeaderLevel 1) -1 $headerLevel -}}
|
||
|
|
{{- if in ($.Scratch.Get "bareul") . -}}
|
||
|
|
</ul>
|
||
|
|
{{/* manually do pop item */}}
|
||
|
|
{{- $tmp := $.Scratch.Get "bareul" -}}
|
||
|
|
{{- $.Scratch.Delete "bareul" -}}
|
||
|
|
{{- $.Scratch.Set "bareul" slice}}
|
||
|
|
{{- range seq (sub (len $tmp) 1) -}}
|
||
|
|
{{- $.Scratch.Add "bareul" (index $tmp (sub . 1)) -}}
|
||
|
|
{{- end -}}
|
||
|
|
{{- else -}}
|
||
|
|
</ul>
|
||
|
|
</li>
|
||
|
|
{{- end -}}
|
||
|
|
{{- end -}}
|
||
|
|
{{- end -}}
|
||
|
|
{{- end -}}
|
||
|
|
<li>
|
||
|
|
<a href="#{{- $cleanedID -}}">{{- $header | safeHTML -}}</a>
|
||
|
|
{{- else -}}
|
||
|
|
<li>
|
||
|
|
<a href="#{{- $cleanedID -}}">{{- $header | safeHTML -}}</a>
|
||
|
|
{{- end -}}
|
||
|
|
{{- end -}}
|
||
|
|
<!-- {{- $firstHeaderLevel := len (seq (index (findRE "[1-4]" (index $headers 0) 1) 0)) -}} -->
|
||
|
|
{{ $firstHeaderLevel := $largest }}
|
||
|
|
{{- $lastHeaderLevel := len (seq (index (findRE "[1-4]" (index $headers (sub (len $headers) 1)) 1) 0)) -}}
|
||
|
|
</li>
|
||
|
|
{{- range seq (sub $lastHeaderLevel $firstHeaderLevel) -}}
|
||
|
|
{{- if in ($.Scratch.Get "bareul") (add . $firstHeaderLevel) -}}
|
||
|
|
</ul>
|
||
|
|
{{- else -}}
|
||
|
|
</ul>
|
||
|
|
</li>
|
||
|
|
{{- end -}}
|
||
|
|
{{- end -}}
|
||
|
|
</ul>
|
||
|
|
</details>
|
||
|
|
{{- end -}}
|