67 lines
1.9 KiB
Ruby
67 lines
1.9 KiB
Ruby
module Nanoc3::Helpers
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module SyntaxColorize
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include Nanoc3::Helpers::Capturing
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def syntax_colorize(lang, type=:ultraviolet, &block)
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# Capture block
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data = capture(&block)
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# Remove whitespace
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lines = data.split("\n")
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min_indent = lines.inject(nil) do |memo, line|
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next memo if line =~ /^\s*$/
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next memo if line !~ /^(\s*)/
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[ memo, $1.size ].compact.min
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end
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lines.each do |line|
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line[0,min_indent] = ''
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end
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data = lines.join("\n")
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# Process
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case type
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when :ultraviolet
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begin
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require 'uv'
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if lang =~ /^(zsh|bash|sh|csh|shell)$/
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lang='shell-unix-generic'
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end
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filtered_data = Uv.parse(data, 'xhtml', lang, false, 'solarized')
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rescue LoadError
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unless $_WARNED_ABOUT_ULTRAVIOLET
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warn "WARNING: Couldn't load uv; please install the ultraviolet gem. This message will not appear again."
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end
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$_WARNED_ABOUT_ULTRAVIOLET = true
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filtered_data = '<pre class="no-uv">' + h(data) + '</pre>'
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end
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# Convert to HTML
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filtered_data = filtered_data.strip.sub(%r{/ ?>}, '>') # convert to HTML
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# Add missing <code> in <pre>
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filtered_data.sub!(/^\s*(<pre class="[^<]+">)\s*/) { |m| "#{m}<code>" }
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filtered_data.sub!(/\s*(<\/pre>)\s*$/) { |m| "</code>#{m}" }
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when :coderay
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# Find filter
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klass = Nanoc3::Filter.named(:coderay)
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filter = klass.new(@item_rep.assigns)
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# Filter captured data
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filtered_data = filter.run(data, :language => lang).strip
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else
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raise ArgumentError, "invalid type: #{type}"
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end
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# Append filtered data to buffer
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buffer = eval('_erbout', block.binding)
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buffer << '<pre><code>' if type == :coderay
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buffer << filtered_data
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buffer << '</code></pre>' if type == :coderay
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end
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end
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end
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