GIT-VERSION-GEN

   1 #!/usr/bin/env ruby
   2 DEF_VER = "v5.2.1"
   3 CONSTANT = "Rainbows::Const::RAINBOWS_VERSION"
   4 RVF = "lib/rainbows/version.rb"
   5 GVF = "GIT-VERSION-FILE"
   6 vn = DEF_VER
   7
   8 # First see if there is a version file (included in release tarballs),
   9 # then try git-describe, then default.
  10 if File.exist?(".git")
  11   describe = `git describe --abbrev=4 HEAD 2>/dev/null`.strip
  12   case describe
  13   when /\Av[0-9]*/
  14     vn = describe
  15     system(*%w(git update-index -q --refresh))
  16     unless `git diff-index --name-only HEAD --`.chomp.empty?
  17       vn << "-dirty"
  18     end
  19     vn.tr!('-', '.')
  20   end
  21 end
  22
  23 vn = vn.sub!(/\Av/, "")
  24
  25 # generate the Ruby constant
  26 new_ruby_version = "#{CONSTANT} = '#{vn}'\n"
  27 cur_ruby_version = File.read(RVF) rescue nil
  28 if new_ruby_version != cur_ruby_version
  29   File.open(RVF, "w") { |fp| fp.write(new_ruby_version) }
  30 end
  31
  32 # generate the makefile snippet
  33 new_make_version = "GIT_VERSION = #{vn}\n"
  34 cur_make_version = File.read(GVF) rescue nil
  35 if new_make_version != cur_make_version
  36   File.open(GVF, "w") { |fp| fp.write(new_make_version) }
  37 end
  38
  39 puts vn if $0 == __FILE__