/usr/lib/ruby/vendor_ruby/thor/actions/inject_into_file.rb is in ruby-thor 0.19.1-2.
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 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | require "thor/actions/empty_directory"
class Thor
module Actions
# Injects the given content into a file. Different from gsub_file, this
# method is reversible.
#
# ==== Parameters
# destination<String>:: Relative path to the destination root
# data<String>:: Data to add to the file. Can be given as a block.
# config<Hash>:: give :verbose => false to not log the status and the flag
# for injection (:after or :before) or :force => true for
# insert two or more times the same content.
#
# ==== Examples
#
# insert_into_file "config/environment.rb", "config.gem :thor", :after => "Rails::Initializer.run do |config|\n"
#
# insert_into_file "config/environment.rb", :after => "Rails::Initializer.run do |config|\n" do
# gems = ask "Which gems would you like to add?"
# gems.split(" ").map{ |gem| " config.gem :#{gem}" }.join("\n")
# end
#
def insert_into_file(destination, *args, &block)
if block_given?
data, config = block, args.shift
else
data, config = args.shift, args.shift
end
action InjectIntoFile.new(self, destination, data, config)
end
alias_method :inject_into_file, :insert_into_file
class InjectIntoFile < EmptyDirectory #:nodoc:
attr_reader :replacement, :flag, :behavior
def initialize(base, destination, data, config)
super(base, destination, {:verbose => true}.merge(config))
@behavior, @flag = if @config.key?(:after)
[:after, @config.delete(:after)]
else
[:before, @config.delete(:before)]
end
@replacement = data.is_a?(Proc) ? data.call : data
@flag = Regexp.escape(@flag) unless @flag.is_a?(Regexp)
end
def invoke!
say_status :invoke
content = if @behavior == :after
'\0' + replacement
else
replacement + '\0'
end
replace!(/#{flag}/, content, config[:force])
end
def revoke!
say_status :revoke
regexp = if @behavior == :after
content = '\1\2'
/(#{flag})(.*)(#{Regexp.escape(replacement)})/m
else
content = '\2\3'
/(#{Regexp.escape(replacement)})(.*)(#{flag})/m
end
replace!(regexp, content, true)
end
protected
def say_status(behavior)
status = if behavior == :invoke
if flag == /\A/
:prepend
elsif flag == /\z/
:append
else
:insert
end
else
:subtract
end
super(status, config[:verbose])
end
# Adds the content to the file.
#
def replace!(regexp, string, force)
unless base.options[:pretend]
content = File.binread(destination)
if force || !content.include?(replacement)
content.gsub!(regexp, string)
File.open(destination, "wb") { |file| file.write(content) }
end
end
end
end
end
end
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