/usr/lib/ruby/vendor_ruby/rspec/core/formatters/syntax_highlighter.rb is in ruby-rspec-core 3.7.0c1e0m0s1-1.
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 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | module RSpec
module Core
module Formatters
# @private
# Provides terminal syntax highlighting of code snippets
# when coderay is available.
class SyntaxHighlighter
def initialize(configuration)
@configuration = configuration
end
def highlight(lines)
implementation.highlight_syntax(lines)
end
private
if RSpec::Support::OS.windows?
# :nocov:
def implementation
WindowsImplementation
end
# :nocov:
else
def implementation
return color_enabled_implementation if @configuration.color_enabled?
NoSyntaxHighlightingImplementation
end
end
def color_enabled_implementation
@color_enabled_implementation ||= begin
require 'coderay'
self.class.attempt_to_add_rspec_terms_to_coderay_keywords
CodeRayImplementation
rescue LoadError
NoSyntaxHighlightingImplementation
end
end
# rubocop:disable Lint/RescueException
# rubocop:disable Lint/HandleExceptions
def self.attempt_to_add_rspec_terms_to_coderay_keywords
CodeRay::Scanners::Ruby::Patterns::IDENT_KIND.add(%w[
describe context
it specify
before after around
let subject
expect allow
], :keyword)
rescue Exception
# Mutating CodeRay's contants like this is not a public API
# and might not always work. If we cannot add our keywords
# to CodeRay it is not a big deal and not worth raising an
# error over, so we ignore it.
end
# rubocop:enable Lint/HandleExceptions
# rubocop:enable Lint/RescueException
# @private
module CodeRayImplementation
RESET_CODE = "\e[0m"
def self.highlight_syntax(lines)
highlighted = begin
CodeRay.encode(lines.join("\n"), :ruby, :terminal)
rescue Support::AllExceptionsExceptOnesWeMustNotRescue
return lines
end
highlighted.split("\n").map do |line|
line.sub(/\S/) { |char| char.insert(0, RESET_CODE) }
end
end
end
# @private
module NoSyntaxHighlightingImplementation
def self.highlight_syntax(lines)
lines
end
end
# @private
# Not sure why, but our code above (and/or coderay itself) does not work
# on Windows, so we disable the feature on Windows.
WindowsImplementation = NoSyntaxHighlightingImplementation
end
end
end
end
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