third-party/mruby/lib/mruby/lockfile.rb

   1 autoload :YAML, 'yaml'
   2
   3 module MRuby
   4   autoload :Source, 'mruby/source'
   5
   6   class Lockfile
   7     class << self
   8       def enable
   9         @enabled = true
  10       end
  11
  12       def disable
  13         @enabled = false
  14       end
  15
  16       def enabled?
  17         @enabled
  18       end
  19
  20       def build(target_name)
  21         instance.build(target_name)
  22       end
  23
  24       def write
  25         instance.write if enabled?
  26       end
  27
  28       def instance
  29         @instance ||= new("#{MRUBY_CONFIG}.lock")
  30       end
  31     end
  32
  33     def initialize(filename)
  34       @filename = filename
  35     end
  36
  37     def build(target_name)
  38       read[target_name] ||= {}
  39     end
  40
  41     def write
  42       locks = {"mruby_version" => mruby}
  43       locks["builds"] = @builds if @builds
  44       File.write(@filename, YAML.dump(locks))
  45     end
  46
  47     private
  48
  49     def read
  50       @builds ||= if File.exist?(@filename)
  51                     YAML.load_file(@filename)["builds"] || {}
  52                   else
  53                     {}
  54                   end
  55     end
  56
  57     def shellquote(s)
  58       if ENV['OS'] == 'Windows_NT'
  59         "\"#{s}\""
  60       else
  61         "'#{s}'"
  62       end
  63     end
  64
  65     def mruby
  66       mruby = {
  67         'version' => MRuby::Source::MRUBY_VERSION,
  68         'release_no' => MRuby::Source::MRUBY_RELEASE_NO,
  69       }
  70
  71       git_dir = "#{MRUBY_ROOT}/.git"
  72       if File.directory?(git_dir)
  73         mruby['git_commit'] = `git --git-dir #{shellquote(git_dir)} --work-tree #{shellquote(MRUBY_ROOT)} rev-parse --verify HEAD`.strip
  74       end
  75
  76       mruby
  77     end
  78
  79     enable
  80   end
  81 end