GIT-VERSION-GEN

   1 #!/usr/bin/env ruby
   2 CONSTANT = "Kcar::VERSION"
   3 RVF = "lib/kcar/version.rb"
   4 DEF_VER = "v0.5.0"
   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 new_ruby_version = "#{CONSTANT} = '#{vn}'\n"
  25 cur_ruby_version = File.read(RVF) rescue nil
  26 if new_ruby_version != cur_ruby_version
  27   File.open(RVF, "w") { |fp| fp.write(new_ruby_version) }
  28 end
  29 File.chmod(0644, RVF)
  30
  31 # generate the makefile snippet
  32 new_make_version = "GIT_VERSION = #{vn}\n"
  33 cur_make_version = File.read(GVF) rescue nil
  34 if new_make_version != cur_make_version
  35   File.open(GVF, "w") { |fp| fp.write(new_make_version) }
  36 end
  37 File.chmod(0644, GVF)
  38
  39 puts vn if $0 == __FILE__