#
# Copyright (C) 2013-2015 Globo.com
#

# This file is part of TDI.

# TDI is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# TDI is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with TDI.  If not, see <http://www.gnu.org/licenses/>.

module HashRecursiveBlank
  def rblank
    r = {}

    each_pair do |key, val|
      r[key] = val.rblank if val.is_a?(Hash)
    end

    r.keep_if { |key, val| val.is_a?(Hash) }
  end

  def rblank!
    each_pair do |key, val|
      self[key] = val.rblank! if val.is_a?(Hash)
    end

    keep_if { |key, val| val.is_a?(Hash) }
  end
end

class Hash
  include HashRecursiveBlank
end