70 lines
1.9 KiB
Ruby
70 lines
1.9 KiB
Ruby
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# Title: Simple Image Figure tag for Jekyll
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# Author: Brandon Mathis http://brandonmathis.com
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# Description: Easily output images in <figure> with an optional <figcaption> and class names.
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#
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# Syntax {% figure [class name(s)] url [caption text] %}
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#
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# Example:
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# {% figure left half http://site.com/images/ninja.png Ninja Attack! %}
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#
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# Output:
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# <figure class='left half'><img src="http://site.com/images/ninja.png"><figcaption>Ninja Attack!</figcaption></figure>
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#
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# Example 2 (image with caption)
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# {% figure /images/ninja.png Ninja Attack! %}
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#
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# Output:
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# <figure><img src="/images/ninja.png"><figcaption>Ninja Attack!</figcaption></figure>
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#
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# Example 3 (just an image with classes)
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# {% figure right /images/ninja.png %}
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#
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# Output:
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# <figure><img class="right" src="/images/ninja.png"></figure>
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#
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module Jekyll
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class FigureImageTag < Liquid::Tag
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ClassImgCaption = /(\S[\S\s]*)\s+(https?:\/\/|\/)(\S+)\s+(.+)/i
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ClassImg = /(\S[\S\s]*)\s+(https?:\/\/|\/)(\S+)/i
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ImgCaption = /^\s*(https?:\/\/|\/)(\S+)\s+(.+)/i
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Img = /^\s*(https?:\/\/|\/)(\S+\s)/i
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@img = nil
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@caption = nil
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@class = ''
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def initialize(tag_name, markup, tokens)
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if markup =~ ClassImgCaption
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@class = $1
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@img = $2 + $3
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@caption = $4
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elsif markup =~ ClassImg
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@class = $1
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@img = $2 + $3
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elsif markup =~ ImgCaption
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@img = $1 + $2
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@caption = $3
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elsif markup =~ Img
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@img = $1 + $2
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end
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super
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end
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def render(context)
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output = super
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if @img
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figure = "<figure class='#{@class}'>"
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figure += "<img src='#{@img}'>"
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figure += "<figcaption>#{@caption}</figcaption>" if @caption
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figure += "</figure>"
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else
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"Error processing input, expected syntax: {% figure [class name(s)] /url/to/image [caption] %}"
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end
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end
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end
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end
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Liquid::Template.register_tag('figure', Jekyll::FigureImageTag)
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