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# frozen_string_literal: true
module Rake
# Makefile loader to be used with the import file loader. Use this to
# import dependencies from make dependency tools:
#
# require 'rake/loaders/makefile'
#
# file ".depends.mf" => [SRC_LIST] do |t|
# sh "makedepend -f- -- #{CFLAGS} -- #{t.prerequisites} > #{t.name}"
# end
#
# import ".depends.mf"
#
# See {Importing Dependencies}[link:doc/rakefile_rdoc.html#label-Importing+Dependencies]
# for further details.
class MakefileLoader
include Rake::DSL
SPACE_MARK = "\0" # :nodoc:
# Load the makefile dependencies in +fn+.
def load(fn) # :nodoc:
lines = File.read fn
lines.gsub!(/\\ /, SPACE_MARK)
lines.gsub!(/#[^\n]*\n/m, "")
lines.gsub!(/\\\n/, " ")
lines.each_line do |line|
process_line(line)
end
end
private
# Process one logical line of makefile data.
def process_line(line) # :nodoc:
file_tasks, args = line.split(":", 2)
return if args.nil?
dependents = args.split.map { |d| respace(d) }
file_tasks.scan(/\S+/) do |file_task|
file_task = respace(file_task)
file file_task => dependents
end
end
def respace(str) # :nodoc:
str.tr SPACE_MARK, " "
end
end
# Install the handler
Rake.application.add_loader("mf", MakefileLoader.new)
end
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