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$makes = []
$default = nil
class Make
def initialize(target, froms, args, block)
@target = target
@froms = froms
@args = args
@block = block
end
def string_target?
@target.class == String
end
def match?(target)
if string_target?
@target == target
else
@target.match?(target)
end
end
def try_build(target)
reified_froms = string_target? ? @froms : reify_froms(target)
reified_froms.each do |from|
Make.make!(from)
end
if !!@args[:phony] ||
!File.exist?(target) ||
reified_froms.any? { |from| File.mtime(target) < File.mtime(from) }
@block.call(target, reified_froms, @args)
end
end
def reify_froms(target)
match = @target.match(target)
@froms.map do |from|
if match.names.empty?
from.gsub(/\$(\d+)/) {|m| match[m[1..].to_i]}
else
from.gsub(/\$#{match.names.join(?|)}/) {|m| match[m[1..]]}
end
end
end
def self.make!(target = nil)
print "Making: "
pp target
if target.nil?
target = ARGV.shift
if target.nil?
if $default.nil?
puts "No target given and no default set"
exit 1
else
target = $default
puts "Using default target: #{target}"
end
end
end
makes = $makes.select { |make| make.match?(target) }
if makes.empty?
puts "No valid target"
else
string_makes = makes.select(&:string_target?)
if string_makes.empty?
makes.first.try_build(target)
else
string_makes.first.try_build(target)
end
end
end
end
def to(target, *froms, **args, &block)
$makes << Make.new(target, froms, args, block)
end
def default(target)
$default = target
end
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