module Fontist::Import::TextHelper

# File lib/fontist/import/text_helper.rb, line 5
def cleanup(text)
  return unless text

  text.gsub("\r\n", "\n")
    .gsub("\r", "\n")
    .strip
    .lines
    .map(&:rstrip)
    .drop_while(&:empty?)
    .join("\n")
end

# File lib/fontist/import/text_helper.rb, line 17
def longest_common_prefix(strs)
  return if strs.empty?

  min, max = strs.minmax
  idx = min.size.times { |i| break i if min[i] != max[i] }
  prefix = min[0...idx].strip
  return if prefix.size < 2

  prefix
end