file_splitter.rb

# frozen_string_literal: true

#
# Copyright (C) 2011 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas 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 Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#

# Used inside the parsers to either parse by comma or parse by line.
module FileSplitter
  
  # OK, lame, but if there's a commas, call it comma-seperated
  def format
    @format = @txt =~ /,/ ? :each_record : :each_line
  end
  
  # Send it a block, expects @txt to be set in the parser.
  def each_entry &block
    self.send format, &block
  end
  
  def each_line
    @txt.each_line {|line| yield(line) }
  end
  
  # Comma-seperated list, all one list
  def each_record
    @txt.split(',').each {|record| yield(record) }
  end
end