text: # -*- coding: utf-8 -*-
  
  # Copyright (c) 2012 Giorgos Verigakis <verigak@gmail.com>
  #
  # Permission to use, copy, modify, and distribute this software for any
  # purpose with or without fee is hereby granted, provided that the above
  # copyright notice and this permission notice appear in all copies.
  #
  # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  
  from __future__ import unicode_literals
  from utils.progress import Progress
  from utils.progress.helpers import WritelnMixin
  
  
  class Bar(WritelnMixin, Progress):
      width = 32
      message = ''
      suffix = '%(index)d/%(max)d'
      bar_prefix = ' |'
      bar_suffix = '| '
      empty_fill = ' '
      fill = '#'
      hide_cursor = True
  
      def update(self):
          filled_length = int(self.width * self.progress)
          empty_length = self.width - filled_length
  
          message = self.message % self
          bar = self.fill * filled_length
          empty = self.empty_fill * empty_length
          suffix = self.suffix % self
          line = ''.join([message, self.bar_prefix, bar, empty, self.bar_suffix,
                          suffix])
          self.writeln(line)
  
  
  class ChargingBar(Bar):
      suffix = '%(percent)d%%'
      bar_prefix = ' '
      bar_suffix = ' '
      empty_fill = '∙'
      fill = '█'
  
  
  class FillingSquaresBar(ChargingBar):
      empty_fill = '▢'
      fill = '▣'
  
  
  class FillingCirclesBar(ChargingBar):
      empty_fill = '◯'
      fill = '◉'
  
  
  class IncrementalBar(Bar):
      phases = (' ', '▏', '▎', '▍', '▌', '▋', '▊', '▉', '█')
  
      def update(self):
          nphases = len(self.phases)
          filled_len = self.width * self.progress
          nfull = int(filled_len)                      # Number of full chars
          phase = int((filled_len - nfull) * nphases)  # Phase of last char
          nempty = self.width - nfull                  # Number of empty chars
  
          message = self.message % self
          bar = self.phases[-1] * nfull
          current = self.phases[phase] if phase > 0 else ''
          empty = self.empty_fill * max(0, nempty - len(current))
          suffix = self.suffix % self
          line = ''.join([message, self.bar_prefix, bar, current, empty,
                          self.bar_suffix, suffix])
          self.writeln(line)
  
  
  class PixelBar(IncrementalBar):
      phases = ('⡀', '⡄', '⡆', '⡇', '⣇', '⣧', '⣷', '⣿')
  
  
  class ShadyBar(IncrementalBar):
      phases = (' ', '░', '▒', '▓', '█')
  