25 lines
867 B
Ruby
25 lines
867 B
Ruby
# Unique header generation
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require 'middleman-core/renderers/redcarpet'
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require 'digest'
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class UniqueHeadCounter < Middleman::Renderers::MiddlemanRedcarpetHTML
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def initialize
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super
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@head_count = {}
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end
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def header(text, header_level)
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friendly_text = text.gsub(/<[^>]*>/,"").parameterize
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if friendly_text.strip.length == 0
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# Looks like parameterize removed the whole thing! It removes many unicode
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# characters like Chinese and Russian. To get a unique URL, let's just
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# URI escape the whole header
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friendly_text = Digest::SHA1.hexdigest(text)[0,10]
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end
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@head_count[friendly_text] ||= 0
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@head_count[friendly_text] += 1
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if @head_count[friendly_text] > 1
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friendly_text += "-#{@head_count[friendly_text]}"
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end
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return "<h#{header_level} id='#{friendly_text}'>#{text}</h#{header_level}>"
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end
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end
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