add wikilinks support for books

templates/index.html

@@ -1,8 +1,9 @@
 {% extends "base.html" %}
+{% import "macros/wikilinks.html" as wikilinks %}
 
 {% block content %}
 <article class="mt-16">
-{{ section.content | safe }}
+  {{ wikilinks::render(section=section) }}
 </article>
 
 {% if config.extra.list_pages %}
@@ -14,17 +15,20 @@
 {% endif %}
 
 <ul class="titleList">
-{% for page in pages %}
+  {% for page in pages %}
   <li>
     <a href="{{ page.permalink | safe }}">{{ page.title }}</a>
     <br />
     {{ page.description }}
   </li>
-{% endfor %}
+  {% endfor %}
 </ul>
 
 {% if paginator %}
-<div class="metaData">{% if paginator.previous %}<a href="{{ paginator.first }}">⥶</a> &nbsp <a href="{{ paginator.previous }}"><</a>{% endif %} &nbsp {{ paginator.current_index }} / {{ paginator.number_pagers }} &nbsp {% if paginator.next %}<a href="{{ paginator.next }}">></a> &nbsp <a href="{{ paginator.last }}">⥸</a>{% endif %}</div>
+<div class="metaData">{% if paginator.previous %}<a href="{{ paginator.first }}">⥶</a> &nbsp <a
+    href="{{ paginator.previous }}">
+    << /a>{% endif %} &nbsp {{ paginator.current_index }} / {{ paginator.number_pagers }} &nbsp {% if paginator.next
+      %}<a href="{{ paginator.next }}">></a> &nbsp <a href="{{ paginator.last }}">⥸</a>{% endif %}</div>
 {% endif %}
 
 {% endif %}

templates/macros/wikilinks.html

@@ -0,0 +1,21 @@
+{% macro render(section) %}
+{% set first_bracket = "[[" %}
+{% set last_bracket = "]]" %}
+
+{% set wikiregex = "\\[\\[([^/]+?)\\]\\]" %}
+
+{% set_global processed_content = section.content %}
+
+{% for wikilink in section.content | split(pat=first_bracket) | slice(start=1) %}
+{% set link_parts = wikilink | split(pat=last_bracket) %}
+{% if link_parts | length >= 1 %}
+{% set link_content = link_parts | first %}
+{% set link_content = link_content | replace(from="?", to="\\?") %}
+{% set wikilink_pattern = first_bracket ~ link_content ~ last_bracket %}
+{% set url = get_url(path="@/books/" ~ link_content ~ ".md") %}
+{% set link = "<a href=" ~ url ~ ">" ~ link_content ~ "</a>" %}
+{% set_global processed_content=processed_content | replace(from=wikilink_pattern, to=link) %}
+{% endif %}
+{% endfor %}
+{{ processed_content | safe }}
+{% endmacro %}