Class: JekyllLastCommit::RepoMan

Inherits:
Object
  • Object
show all
Defined in:
lib/jekyll-last-commit/repo_man.rb

Instance Method Summary collapse

Constructor Details

#initialize(path_site) ⇒ RepoMan

Returns a new instance of RepoMan.



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# File 'lib/jekyll-last-commit/repo_man.rb', line 8

def initialize(path_site)
  @path_site = Pathname.new(path_site)
end

Instance Method Details

#discover_commits(relative_file_paths) ⇒ Object 



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# File 'lib/jekyll-last-commit/repo_man.rb', line 27

def discover_commits(relative_file_paths)
  return if @repo.nil?

  document_paths = relative_file_paths.map {|rfp| generate_relative_path(rfp) }.to_set

  # gets updated with renames pointing to original path
  paths_lookup = document_paths.reduce({}) do |memo, original_path|
    memo[original_path] = original_path
    memo
  end

  # starting with the most recent commit, look for data on paths_undetermined
  walker = Rugged::Walker.new(@repo)
  walker.push(@repo.head.target.oid) # start with most recent commit

  find_similar_opts = {rename_limit: 1000}

  @paths_determined ||= {}

  walker.each_with_index do |commit, i|
    diff = commit.diff

    # ignore renames
    diff.find_similar!(**find_similar_opts)

    diff.deltas.each do |delta|
      new_file_path = delta.new_file[:path]

      original_path = paths_lookup[new_file_path]

      if document_paths.include?(new_file_path)
        if delta.status == :renamed
          # special case
          old_file_path = delta.old_file[:path]

          paths_lookup[old_file_path] = original_path

          # no longer looking for the new file, looking for the old file
          document_paths.delete(new_file_path)
          document_paths.add(old_file_path)
        else
          @paths_determined[original_path] = commit
          document_paths.delete(new_file_path)
        end
      end
    end

    break if document_paths.empty?
  end
end

#discover_repo ⇒ Object 



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# File 'lib/jekyll-last-commit/repo_man.rb', line 12

def discover_repo
  begin
    @repo = Rugged::Repository.discover(@path_site)

    path_dot_git = Pathname.new(@repo.path)
    path_repo = path_dot_git.parent

    # necessary to handle situations where site is not top level in repo
    @path_relative = @path_site.relative_path_from(path_repo)

  rescue
    Jekyll.logger.warn "JekyllLastCommit: unable to find git repository at #{@path_site}"
  end
end

#find_commit(relative_path) ⇒ Object 



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# File 'lib/jekyll-last-commit/repo_man.rb', line 78

def find_commit(relative_path)
  return nil if @repo.nil?

  commit = @paths_determined[generate_relative_path(relative_path)]

  return nil if commit.nil?

  commit_hash = commit.to_hash
                  .tap {|h| h.delete(:tree) }    # just reduce noise; can always add back later
                  .tap {|h| h.delete(:parents) }
                  .transform_keys(&:to_s)        # transform symbols to keys so liquid will render
                  .transform_values {|v| v.is_a?(Hash) ? v.transform_keys(&:to_s) : v.strip! }
  commit_hash['sha'] = commit.oid
  commit_hash['time'] = commit.time
  commit_hash['time_epoch'] = commit.time.to_i

  commit_hash
end