eb631b987d
- fix javadoc to find Kotlin files - fix formatting for language info box - fix tocmaker link generator
61 lines
1.4 KiB
Ruby
61 lines
1.4 KiB
Ruby
# Generates a table of contents based on markdown headers in the body
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#
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# The block has 2 optional args:
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# * A variable name. If provided, the toc will only be generated if the var is true
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# * An integer, describing the maximum depth at which headers are added to the toc
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class TocMakerBlock < Liquid::Block
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def initialize(tag_name, arg, tokens)
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super
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condition, depth = arg.split
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@max_depth = depth.to_s.empty? ? 100 : depth.to_i
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@condition_var = condition.strip unless condition.to_s.empty?
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@body = tokens
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end
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def to_internal_link(header)
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url = header.downcase.gsub(/[^a-zA-Z0-9 -]+/, "").strip.gsub(/\s+/, "-")
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"[#{header}](##{url})"
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end
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def render(context)
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contents = @body.render(context)
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if @condition_var && !context[@condition_var]
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# If the condition is false, the toc is not generated
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return contents
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end
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headers = contents.lines.map {|l|
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if /^(#+)\s+(\S.*)$/ =~ l
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[$1.length, $2]
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end
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}.compact
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min_indent = headers.map {|t| t[0]}.min
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headers = headers.map {|t|
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actual_depth = t[0] - min_indent
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if actual_depth < @max_depth then
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indent = " " * actual_depth
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"#{indent}* #{to_internal_link(t[1])}"
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end
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}.compact
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headers.unshift("### Table Of Contents\n")
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headers.join("\n") + contents
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end
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end
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Liquid::Template.register_tag('tocmaker', TocMakerBlock)
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