/usr/lib/ruby/vendor_ruby/kramdown/converter/syntax_highlighter/rouge.rb is in ruby-kramdown 1.15.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | # -*- coding: utf-8 -*-
#
#--
# Copyright (C) 2009-2016 Thomas Leitner <t_leitner@gmx.at>
#
# This file is part of kramdown which is licensed under the MIT.
#++
#
module Kramdown::Converter::SyntaxHighlighter
# Uses Rouge which is CSS-compatible to Pygments to highlight code blocks and code spans.
module Rouge
begin
require 'rouge'
# Highlighting via Rouge is available if this constant is +true+.
AVAILABLE = true
begin
# Rouge::Formatters::HTMLLegacy is available on Rouge 2.0 or later
FORMATTER_CLASS = ::Rouge::Formatters::HTMLLegacy
rescue NameError
# Fallbacks to Rouge 1.x formatter if Rouge::Formatters::HTMLLegacy is not available
FORMATTER_CLASS = ::Rouge::Formatters::HTML
end
rescue LoadError, SyntaxError
AVAILABLE = false # :nodoc:
end
def self.call(converter, text, lang, type, call_opts)
opts = options(converter, type)
call_opts[:default_lang] = opts[:default_lang]
lexer = ::Rouge::Lexer.find_fancy(lang || opts[:default_lang], text)
return nil if opts[:disable] || !lexer
opts[:css_class] ||= 'highlight' # For backward compatibility when using Rouge 2.0
formatter = (opts.fetch(:formatter, FORMATTER_CLASS)).new(opts)
formatter.format(lexer.lex(text))
end
def self.options(converter, type)
prepare_options(converter)
converter.data[:syntax_highlighter_rouge][type]
end
def self.prepare_options(converter)
return if converter.data.key?(:syntax_highlighter_rouge)
cache = converter.data[:syntax_highlighter_rouge] = {}
opts = converter.options[:syntax_highlighter_opts].dup
span_opts = (opts.delete(:span) || {}).dup
block_opts = (opts.delete(:block) || {}).dup
[span_opts, block_opts].each do |hash|
hash.keys.each do |k|
hash[k.kind_of?(String) ? Kramdown::Options.str_to_sym(k) : k] = hash.delete(k)
end
end
cache[:span] = opts.merge(span_opts).update(:wrap => false)
cache[:block] = opts.merge(block_opts)
end
end
end
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