Convert string encoding

encconv.rb

# Convert string encoding

# options:
#   -e [encoding]   Target encoding (default: utf-8)

require 'kconv'
require 'optparse'

def convert_encoding(lines, to)
  encoding = Kconv.guess(lines.join)
  lines.map do |line|
    Kconv.kconv(line, to, encoding)
  end
end

def main
  params = ARGV.getopts('e:')
  p params
  to = params['e'] || 'utf-8'

  lines = readlines
  convert_encoding(lines, to).each do |line|
    puts line
  end
end

if $0 == __FILE__
  main
end