lib/git/raw/repository.rb

   1 require 'git/raw/internal/object'
   2 require 'git/raw/internal/pack'
   3 require 'git/raw/internal/loose'
   4 require 'git/raw/object'
   5
   6 module Git
   7   module Raw
   8
   9     class Repository
  10       def initialize(git_dir)
  11         @git_dir = git_dir
  12         @loose = Raw::Internal::LooseStorage.new(git_path("objects"))
  13         @packs = []
  14         initpacks
  15       end
  16
  17       def show
  18         @packs.each do |p|
  19           puts p.name
  20           puts
  21           p.each_sha1 do |s|
  22             puts "**#{p[s].type}**"
  23             if p[s].type.to_s == 'commit'
  24               puts s.unpack('H*')
  25               puts p[s].content
  26             end
  27           end
  28           puts
  29         end
  30       end
  31
  32       def cat_file(sha)
  33         get_raw_object_by_sha1(sha).content rescue nil
  34       end
  35
  36       def log(sha, count = 30)
  37         output = ''
  38         i = 0
  39
  40         while sha && (i < count) do
  41           o = get_raw_object_by_sha1(sha)
  42           c = Git::Raw::Object.from_raw(o)
  43
  44           output += "commit #{sha}\n"
  45           output += o.content + "\n"
  46
  47           sha = c.parent.first
  48           i += 1
  49         end
  50
  51         output
  52       end
  53
  54       def get_object_by_sha1(sha1)
  55         r = get_raw_object_by_sha1(sha1)
  56         return nil if !r
  57         Object.from_raw(r, self)
  58       end
  59
  60       def get_raw_object_by_sha1(sha1)
  61         sha1 = [sha1].pack("H*")
  62
  63         # try packs
  64         @packs.each do |pack|
  65           o = pack[sha1]
  66           return o if o
  67         end
  68
  69         # try loose storage
  70         o = @loose[sha1]
  71         return o if o
  72
  73         # try packs again, maybe the object got packed in the meantime
  74         initpacks
  75         @packs.each do |pack|
  76           o = pack[sha1]
  77           return o if o
  78         end
  79
  80         nil
  81       end
  82
  83       protected
  84
  85         def git_path(path)
  86           return "#@git_dir/#{path}"
  87         end
  88
  89       private
  90
  91         def initpacks
  92           @packs.each do |pack|
  93             pack.close
  94           end
  95           @packs = []
  96           Dir.open(git_path("objects/pack/")) do |dir|
  97             dir.each do |entry|
  98               if entry =~ /\.pack$/i
  99                 @packs << Git::Raw::Internal::PackStorage.new(git_path("objects/pack/" \
 100                                                                   + entry))
 101               end
 102             end
 103           end
 104         end
 105
 106     end
 107
 108   end
 109 end