43 lines
1.6 KiB
Ruby
43 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module FrontMatter
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DELIM_LANG = {
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'---' => 'yaml',
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'+++' => 'toml',
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';;;' => 'json'
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}.freeze
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DELIM_UNTRUSTED = "(?:#{Gitlab::FrontMatter::DELIM_LANG.keys.map { |x| RE2::Regexp.escape(x) }.join('|')})".freeze
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# Original pattern:
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# \A(?<encoding>[^\r\n]*coding:[^\r\n]*\R)? # optional encoding line
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# (?<before>\s*)
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# ^(?<delim>#{DELIM})[ \t]*(?<lang>\S*)\R # opening front matter marker (optional language specifier)
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# (?<front_matter>.*?) # front matter block content (not greedy)
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# ^(\k<delim> | \.{3}) # closing front matter marker
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# [^\S\r\n]*(\R|\z)
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# rubocop:disable Style/StringConcatenation
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# rubocop:disable Style/LineEndConcatenation
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PATTERN_UNTRUSTED =
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# optional encoding line
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"\\A(?P<encoding>[^\\r\\n]*coding:[^\\r\\n]*#{::Gitlab::UntrustedRegexp::BACKSLASH_R})?" +
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'(?P<before>\s*)' +
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# opening front matter marker (optional language specifier)
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"^(?P<delim>#{DELIM_UNTRUSTED})[ \\t]*(?P<lang>\\S*)#{::Gitlab::UntrustedRegexp::BACKSLASH_R}" +
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# front matter block content (not greedy)
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'(?P<front_matter>(?:\n|.)*?)' +
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# closing front matter marker
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"^((?P<delim_closing>#{DELIM_UNTRUSTED})|\\.{3})" +
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"[^\\S\\r\\n]*(#{::Gitlab::UntrustedRegexp::BACKSLASH_R}|\\z)"
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# rubocop:enable Style/LineEndConcatenation
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# rubocop:enable Style/StringConcatenation
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PATTERN_UNTRUSTED_REGEX =
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Gitlab::UntrustedRegexp.new(PATTERN_UNTRUSTED, multiline: true)
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end
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end
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