Module: Grit::GitRuby

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# File 'lib/grit/git-ruby.rb', line 32

def cat_ref(options, ref)
  sha = rev_parse({}, ref)
  cat_file(options, sha)
end

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# File 'lib/grit/git-ruby.rb', line 46

def diff(options, sha1, sha2 = nil)
  try_run { ruby_git.diff(sha1, sha2, options) }
end

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# File 'lib/grit/git-ruby.rb', line 197

def file_size(ref)
  try_run { ruby_git.cat_file_size(ref).to_s }
end

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# File 'lib/grit/git-ruby.rb', line 201

def file_type(ref)
  try_run { ruby_git.cat_file_type(ref).to_s }
end

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# File 'lib/grit/git-ruby.rb', line 12

def init(options, *args)
  if options.size == 0
    Grit::GitRuby::Repository.init(@git_dir)
  else
    method_missing('init', options, *args)
  end
end

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# File 'lib/grit/git-ruby.rb', line 38

def ls_tree(options, treeish, *paths)
  sha = rev_parse({}, treeish)
  ruby_git.ls_tree(sha, paths.flatten, options.delete(:r))
rescue Grit::GitRuby::Repository::NoSuchShaFound
  ''
end

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# File 'lib/grit/git-ruby.rb', line 116

def refs(options, prefix)
  refs = []
  already = {}
  Dir.chdir(@git_dir) do
    files = Dir.glob(prefix + '/**/*')
    files.each do |ref|
      next if !File.file?(ref)
      id = File.read(ref).chomp
      name = ref.sub("#{prefix}/", '')
      if !already[name]
        refs << "#{name} #{id}"
        already[name] = true
      end
    end

    if File.file?('packed-refs')
      File.readlines('packed-refs').each do |line|
        if m = /^(\w{40}) (.*?)$/.match(line)
          next if !Regexp.new('^' + prefix).match(m[2])
          name = m[2].sub("#{prefix}/", '')
          if !already[name]
            refs << "#{name} #{m[1]}"
            already[name] = true
          end
        end
      end
    end
  end

  refs.join("\n")
end

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# File 'lib/grit/git-ruby.rb', line 50

def rev_list(options, *refs)
  refs = ['master'] if refs.empty?
  options.delete(:skip) if options[:skip].to_i == 0
  allowed_options = [:max_count, :since, :until, :pretty]  # this is all I can do right now
  if ((options.keys - allowed_options).size > 0) || refs.size > 1
    method_missing('rev-list', options, *refs)
  elsif (options.size == 0)
    # pure rev-list
    ref = refs.first
    begin
      file_index.commits_from(rev_parse({}, ref)).join("\n") + "\n"
    rescue
      method_missing('rev-list', options, *refs)
    end
  else
    ref = refs.first
    aref = rev_parse({:verify => true}, ref)
    if aref.is_a? Array
      method_missing('rev-list', options, *refs)
    else
      try_run { ruby_git.rev_list(aref, options) }
    end
  end
end

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# File 'lib/grit/git-ruby.rb', line 75

def rev_parse(options, string)
  raise RuntimeError, "invalid string: #{string.inspect}" unless string.is_a?(String)

  # Split ranges, but don't split when specifying a ref:path.
  # Don't split HEAD:some/path/in/repo..txt
  # Do split sha1..sha2
  if string !~ /:/ && string =~ /\.\./
    (sha1, sha2) = string.split('..')
    return [rev_parse({}, sha1), rev_parse({}, sha2)]
  end

  if /^[0-9a-f]{40}$/.match(string)  # passing in a sha - just no-op it
    return string.chomp
  end

  head = File.join(@git_dir, 'refs', 'heads', string)
  return File.read(head).chomp if File.file?(head)

  head = File.join(@git_dir, 'refs', 'remotes', string)
  return File.read(head).chomp if File.file?(head)

  head = File.join(@git_dir, 'refs', 'tags', string)
  return File.read(head).chomp if File.file?(head)

  ## check packed-refs file, too
  packref = File.join(@git_dir, 'packed-refs')
  if File.file?(packref)
    File.readlines(packref).each do |line|
      if m = /^(\w{40}) refs\/.+?\/(.*?)$/.match(line)
        next if !Regexp.new(Regexp.escape(string) + '$').match(m[3])
        return m[1].chomp
      end
    end
  end

  ## !! more - partials and such !!

  # revert to calling git - grr
  return method_missing('rev-parse', options, string).chomp
end

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# File 'lib/grit/git-ruby.rb', line 205

def ruby_git
  @ruby_git_repo ||= Repository.new(@git_dir)
end

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# File 'lib/grit/git-ruby.rb', line 148

def tags(options, prefix)
  refs = []
  already = {}

  Dir.chdir(repo.path) do
    files = Dir.glob(prefix + '/**/*')

    files.each do |ref|
      next if !File.file?(ref)

      id = File.read(ref).chomp
      name = ref.sub("#{prefix}/", '')

      if !already[name]
        refs << "#{name} #{id}"
        already[name] = true
      end
    end

    if File.file?('packed-refs')
      lines = File.readlines('packed-refs')
      lines.each_with_index do |line, i|
        if m = /^(\w{40}) (.*?)$/.match(line)
          next if !Regexp.new('^' + prefix).match(m[2])
          name = m[2].sub("#{prefix}/", '')

          # Annotated tags in packed-refs include a reference
          # to the commit object on the following line.
          next_line = lines[i + 1]

          id =
          if next_line && next_line[0] == ?^
            next_line[1..-1].chomp
          else
            m[1]
          end

          if !already[name]
            refs << "#{name} #{id}"
            already[name] = true
          end
        end
      end
    end
  end

  refs.join("\n")
end