4 require 'git/raw/internal/object'
6 module Git module Raw module Internal
7 class LooseObjectError < StandardError
11 def initialize(directory)
12 @directory = directory
16 sha1 = sha1.unpack("H*")[0]
18 path = @directory+'/'+sha1[0...2]+'/'+sha1[2..40]
20 get_raw_object(File.read(path))
26 def get_raw_object(buf)
28 raise LooseObjectError, "object file too small"
31 if legacy_loose_object?(buf)
32 content = Zlib::Inflate.inflate(buf)
33 header, content = content.split(/\0/, 2)
34 if !header || !content
35 raise LooseObjectError, "invalid object header"
37 type, size = header.split(/ /, 2)
38 if !%w(blob tree commit tag).include?(type) || size !~ /^\d+$/
39 raise LooseObjectError, "invalid object header"
44 type, size, used = unpack_object_header_gently(buf)
45 content = Zlib::Inflate.inflate(buf[used..-1])
47 raise LooseObjectError, "size mismatch" if content.length != size
48 return RawObject.new(type, content)
52 def unpack_object_header_gently(buf)
62 raise LooseObjectError, "object file too short"
67 size += (c & 0x7f) << shift
70 type = OBJ_TYPES[type]
71 if ![:blob, :tree, :commit, :tag].include?(type)
72 raise LooseObjectError, "invalid loose object type"
74 return [type, size, used]
76 private :unpack_object_header_gently
78 def legacy_loose_object?(buf)
79 word = (buf[0] << 8) + buf[1]
80 buf[0] == 0x78 && word % 31 == 0
82 private :legacy_loose_object?
89 storage = Git::Internal::LooseStorage.new(path)
90 Find.find(path) do |p|
91 next if !/\/([0-9a-f]{2})\/([0-9a-f]{38})$/.match(p)
92 obj = storage[[$1+$2].pack("H*")]
93 puts "%s %s" % [obj.sha1.unpack("H*")[0], obj.type]