Class: Black::Git::Repository

Inherits:
Object
  • Object
show all
Defined in:
lib/black/git.rb

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Repository

Returns a new instance of Repository.



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# File 'lib/black/git.rb', line 14

def initialize(path)
  unless File.directory?(path)
    raise "#{ path } is not a valid directory"
  end

  @path = path
end

Instance Method Details

#commit_at(index_or_sha) ⇒ Object

Return a diff object for each file in the given commit



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# File 'lib/black/git.rb', line 31

def commit_at(index_or_sha)
  if index_or_sha.is_a?(Integer)
    index = index_or_sha
    sha = commits_dict[index_or_sha]
  else
    index = commits_dict.key(index_or_sha)
    sha = index_or_sha
  end
  sha_prev = commits_dict[index-1]
  output = diff_output(sha)

  commands = %w(diff-tree --no-commit-id --name-status -r)
  commands.push('--root') if index.zero?
  commands.push(sha)

  Black::Git
    .execute(@path, commands)
    .lines
    .map
    .with_index do |line, i|
      status, filename = line.split(/\s+/)
      status = status.chomp
      filename = filename.chomp

      Black::Git::Diff.new(@path, sha, sha_prev, output[i], filename, status)
    end
end

#commits ⇒ Object 



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# File 'lib/black/git.rb', line 22

def commits
  Enumerator.new do |y|
    commits_dict.each_key do |index|
      y.yield commit_at(index)
    end
  end
end

#commits_dict ⇒ Object

Store a lookup dictionary for all commits



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# File 'lib/black/git.rb', line 60

def commits_dict
  return @commits_dict if @commits_dict

  @commits_dict = {}
  Black::Git
    .execute(@path, %w(rev-list HEAD --reverse))
    .each_line
    .with_index{ |a, i| @commits_dict[i] = a.chomp }

  @commits_dict
end

#diff_output(sha) ⇒ Object

Get diff output on all files in each commit rather than one file at a time.



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# File 'lib/black/git.rb', line 73

def diff_output(sha)
  output = []
  marker = 0

  Black::Git
    .execute(@path, %w(show --format='%b' --no-prefix -U1000).push(sha))
    .each_line do |line|
      if line.start_with?('diff --git')
        marker += 1
      else
        if output[marker]
          output[marker] += line
        else
          output[marker] = line
        end
      end
    end

  # there are two empty lines at the top of the git show output
  output.shift
  output
end