{% comment %}
 # -----------------------------------------------------------------------------
 #  ~/_includes/themes/j1/procedures/global/get_page_path.proc
 #  Liquid PROCEDURE to calculate the path of a page (page_path)
 #
 #  https://jekyll.one
 #
 #  Copyright (C) 2019 Juergen Adams
 #
 #  J1 Template is licensed under the MIT License.
 #  See: https://github.com/jekyll-one-org/j1_template/blob/master/LICENSE
 #
 # -----------------------------------------------------------------------------
 #   Global procedure. Calculates the absolute path of the current page
 #   relative to the web root. The path is resturned by the liquid variable
 #   page_path.
 #
 #    Usage:
 #      1)  include the get_page_path.proc procedure
 #      2)  set mode to full|short
 #      3)  assign|use the page_path variable
 #
 #  Example:
 #
 #    {% capture get_page_path %}themes/{{site.template.name}}/procedures/global/get_page_path.proc{% endcapture %}
 #
 #    {% include {{get_page_path}} %}
 #    {% assign my_page_path = page_path %}
 # -----------------------------------------------------------------------------
 #  Test data:
 #  liquid_var:  {{ liquid_var | debug }}
 # -----------------------------------------------------------------------------
{% endcomment %}

{% comment %} Liquid procedures
-------------------------------------------------------------------------------- {% endcomment %}


{% comment %} Variables
-------------------------------------------------------------------------------- {% endcomment %}
{% assign mode            = include.mode %}

{% assign path_elements   = page.path | split: "/" %}
{% assign length          = path_elements.size | minus: 2 %}
{% assign _page_path      = "" %}

{% comment %} Main
-------------------------------------------------------------------------------- {% endcomment %}
{% for c in (0..length) %}
  {% capture _page_path %}{{_page_path}}/{{path_elements[c]}}{% endcapture %}
{% endfor %}

{% if site.source.size %}
  {% assign source_path = site.source %}
{% else %}
  {% assign source_path = "." %}
{% endif %}

{% comment %} extend path for posts|collections if collections_dir is used|set
-------------------------------------------------------------------------------- {% endcomment %}
{% if page.collection == 'posts' and site.collections_dir.size > 0 %}
  {% capture page_path %}{{site.collections_dir}}{{_page_path}}{% endcapture %}
  {% comment %} {% capture page_path %}{{source_path | remove_first:'/'}}/{{_page_path | prepend: site.collections_dir}}{% endcapture %} {% endcomment %}
{% elsif mode == 'absolute' %}
  {% assign page_path=_page_path %}
{% else %}
  {% capture page_path %}{{source_path | remove_first:'/'}}{{_page_path}}{% endcapture %}
{% endif %}