#!/usr/bin/env ruby
require File.expand_path("../ruby", __FILE__)

def replace_header(head, header_name)
  head.sub!(/(\.#{header_name}\s*= ').*'/) { "#{$1}#{MakeScript.send(header_name)}'"}
end

# read spec file and split out manifest section
spec = File.read(MakeScript.gemspec_file)
head, manifest, tail = spec.split("  # = MANIFEST =\n")

# replace name version and date
replace_header(head, :lib_name)
replace_header(head, :version)

files = `git ls-files`.
  split("\n").
  sort.
  reject { |file| file =~ /^\./ }.
  reject { |file| file =~ /^(rdoc|pkg)/ }.
  map { |file| "    #{file}" }.
  join("\n")

# piece file back together and write
manifest = "  s.files = %w[\n#{files}\n  ]\n"
spec = [head, manifest, tail].join("  # = MANIFEST =\n")
File.open(MakeScript.gemspec_file, 'w') { |io| io.write(spec) }
puts "Updated #{MakeScript.gemspec_file}"