QRCode cli printer

cli.py

import qrcode.image.base

BLACK = "\033[40m"
WHITE = "\033[107m"
DEFAULT = "\033[49m"
SPACER = "  "

class CliImage(qrcode.image.base.BaseImage):
    """Cli image builder."""

    def __init__(self, border, width, box_size):
        super(CliImage, self).__init__(border, width, box_size)
        size = (self.width + border * 2)
        self.border = border
        self.width = width
        self.lines = [[WHITE] * (size + 1) for i in xrange(size)]

    def drawrect(self, row, col):
        self.lines[row + self.border][col + self.border] = BLACK

    def save(self, stream, kind=None):
        stream.write(self.to_string())
    
    def to_string(self):
        return ('\n'.join(SPACER.join(l) + DEFAULT for l in self.lines))