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31 lines
525 B
Ruby
31 lines
525 B
Ruby
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require 'ripper/filter'
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class ColorizeFilter < Ripper::Filter
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def on_default(event, tok, f)
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f << escape(tok)
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end
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def on_comment(tok, f)
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f << %Q[<span class="comment">#{escape(tok)}</span>]
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end
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def on_tstring_content(tok, f)
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f << %Q[<span class="string">#{escape(tok)}</span>]
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end
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ESC = {
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'&' => '&',
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'<' => '<',
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'>' => '>'
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}
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def escape(str)
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tbl = ESC
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str.gsub(/[&<>]/) {|ch| tbl[ch] }
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end
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end
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if $0 == __FILE__
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ColorizeFilter.new(ARGF).parse($stdout)
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end
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