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170 lines
7.9 KiB
HTML
170 lines
7.9 KiB
HTML
{% capture tocWorkspace %}
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{% comment %}
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Copyright (c) 2017 Vladimir "allejo" Jimenez
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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{% endcomment %}
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{% comment %}
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Version 1.0.14
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https://github.com/allejo/jekyll-toc
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"...like all things liquid - where there's a will, and ~36 hours to spare, there's usually a/some way" ~jaybe
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Usage:
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{% include toc.html html=content sanitize=true class="inline_toc" id="my_toc" h_min=2 h_max=3 %}
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Parameters:
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* html (string) - the HTML of compiled markdown generated by kramdown in Jekyll
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Optional Parameters:
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* sanitize (bool) : false - when set to true, the headers will be stripped of any HTML in the TOC
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* class (string) : '' - a CSS class assigned to the TOC
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* id (string) : '' - an ID to assigned to the TOC
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* h_min (int) : 1 - the minimum TOC header level to use; any header lower than this value will be ignored
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* h_max (int) : 6 - the maximum TOC header level to use; any header greater than this value will be ignored
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* ordered (bool) : false - when set to true, an ordered list will be outputted instead of an unordered list
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* item_class (string) : '' - add custom class(es) for each list item; has support for '%level%' placeholder, which is the current heading level
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* submenu_class (string) : '' - add custom class(es) for each child group of headings; has support for '%level%' placeholder which is the current "submenu" heading level
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* baseurl (string) : '' - add a base url to the TOC links for when your TOC is on another page than the actual content
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* anchor_class (string) : '' - add custom class(es) for each anchor element
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* skipNoIDs (bool) : false - skip headers that do not have an `id` attribute
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Output:
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An ordered or unordered list representing the table of contents of a markdown block. This snippet will only
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generate the table of contents and will NOT output the markdown given to it
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{% endcomment %}
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{% capture my_toc %}{% endcapture %}
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{% assign orderedList = include.ordered | default: false %}
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{% assign skipNoIDs = include.skipNoIDs | default: false %}
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{% assign minHeader = include.h_min | default: 1 %}
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{% assign maxHeader = include.h_max | default: 6 %}
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{% assign nodes = include.html | split: '<h' %}
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{% assign firstHeader = true %}
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{% assign previousLevel = 0 %}
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{% capture listModifier %}{% if orderedList %}1.{% else %}-{% endif %}{% endcapture %}
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{% for node in nodes %}
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{% if node == "" %}
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{% continue %}
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{% endif %}
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{% assign headerLevel = node | replace: '"', '' | slice: 0, 1 | times: 1 %}
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{% if headerLevel < minHeader or headerLevel > maxHeader %}
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{% continue %}
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{% endif %}
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{% assign _workspace = node | split: '</h' %}
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{% assign _idWorkspace = _workspace[0] | split: 'id="' %}
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{% assign _idWorkspace = _idWorkspace[1] | split: '"' %}
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{% assign html_id = _idWorkspace[0] %}
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{% assign _classWorkspace = _workspace[0] | split: 'class="' %}
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{% assign _classWorkspace = _classWorkspace[1] | split: '"' %}
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{% assign html_class = _classWorkspace[0] %}
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{% if html_class contains "no_toc" %}
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{% continue %}
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{% endif %}
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{% if firstHeader %}
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{% assign firstHeader = false %}
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{% assign minHeader = headerLevel %}
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{% endif %}
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{% capture _hAttrToStrip %}{{ _workspace[0] | split: '>' | first }}>{% endcapture %}
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{% assign header = _workspace[0] | replace: _hAttrToStrip, '' %}
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{% assign indentAmount = headerLevel | minus: minHeader %}
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{% assign space = '' %}
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{% for i in (1..indentAmount) %}
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{% assign space = space | prepend: ' ' %}
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{% endfor %}
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{% if include.item_class and include.item_class != blank %}
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{% capture listItemClass %}{:.{{ include.item_class | replace: '%level%', headerLevel }}}{% endcapture %}
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{% endif %}
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{% capture anchor_body %}{% if include.sanitize %}{{ header | strip_html }}{% else %}{{ header }}{% endif %}{% endcapture %}
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{% capture anchor_body %}{{ anchor_body | replace: "|", "\|" }}{% endcapture %}
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{% if html_id %}
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{% capture list_item %}[{{ anchor_body }}]({% if include.baseurl %}{{ include.baseurl }}{% endif %}#{{ html_id }}){% endcapture %}
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{% elsif skipNoIDs == true %}
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{% continue %}
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{% else %}
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{% capture list_item %}{{ anchor_body }}{% endcapture %}
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{% endif %}
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<!--
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If we have a submenu class and we're unindenting, then we need to add a "closing" class to this group of bullet
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points
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-->
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{% if include.submenu_class and previousLevel > indentAmount %}
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<!--
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`space` is the current indentation, so we if want to close off the previous grouping, we need to add one
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more level of indentation
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-->
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{% assign submenuIndentation = space | prepend: ' ' %}
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{% capture my_toc %}{{ my_toc }}
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{{ submenuIndentation }}{:.{{ include.submenu_class | replace: '%level%', previousLevel }}}{% endcapture %}
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{% endif %}
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{% capture my_toc %}{{ my_toc }}
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{{ space }}{{ listModifier }} {{ listItemClass }} {{ list_item }}{% if include.anchor_class %}{:.{{ include.anchor_class }}}{% endif %}{% endcapture %}
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{% assign previousLevel = indentAmount %}
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{% endfor %}
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{% if include.class and include.class != blank %}
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{% capture my_toc %}{:.{{ include.class }}}
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{{ my_toc | lstrip }}{% endcapture %}
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{% endif %}
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{% if include.id %}
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{% capture my_toc %}{: #{{ include.id }}}
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{{ my_toc | lstrip }}{% endcapture %}
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{% endif %}
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<!--
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If we have a submenu class, we need to close off all the remaining list item groups so that submenu classes are
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applied correctly to them
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-->
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{% if include.submenu_class != blank %}
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<!-- The last level of indentation that we were at, we need to work backwards from there closing each group -->
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{% for i in (1..previousLevel) %}
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{% assign lvl = previousLevel | plus: 1 | minus: i %} <!-- Invert the indent level based on `i` -->
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{% assign closingSpace = '' %}
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{% for i in (1..lvl) %}
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{% assign closingSpace = closingSpace | prepend: ' ' %}
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{% endfor %}
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{% capture my_toc %}{{ my_toc }}
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{{ closingSpace }}{:.{{ include.submenu_class | replace: '%level%', lvl }}}{% endcapture %}
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{% endfor %}
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{% endif %}
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{% endcapture %}{% assign tocWorkspace = '' %}{{ my_toc | markdownify | strip }} |