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40 lines
1.4 KiB
40 lines
1.4 KiB
12 years ago
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# Replace Jekyll's handling of the Redcarpet code_block (which already adds
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# support for highlighting, but needs support for the very non-standard
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# "code fences with line highlights" extension).
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# Since this is currently depending on Redcarpet to cooperate, we are going to
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# be naive, and only allow line highlighting when a language is specified. If
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# you don't want any syntax highlighting but want to highlight lines, then you
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# need to specify text as your language, like:
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# ```text{4}
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module Jekyll
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module Converters
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class Markdown
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class RedcarpetParser
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module WithPygments
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def block_code(code, lang)
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require 'pygments'
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lang_parts = lang && lang.split('{')
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lang = lang_parts && !lang_parts[0].empty? && lang_parts[0] || 'text'
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hl_lines = ''
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if lang_parts && lang_parts.size >= 2
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hl_lines = lang_parts[1].gsub(/[{}]/, '').split(',').map do |ln|
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if matches = /(\d+)-(\d+)/.match(ln)
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ln = Range.new(matches[1], matches[2]).to_a.join(' ')
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end
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ln
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end.join(' ')
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end
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output = add_code_tags(
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Pygments.highlight(code, :lexer => lang,
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:options => { :encoding => 'utf-8', :hl_lines => hl_lines }),
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lang
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)
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end
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end
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end
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end
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end
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end
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