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#!/usr/bin/env python
"""
qr - Convert stdin (or the first argument) to a QR Code.
When stdout is a tty the QR Code is printed to the terminal and when stdout is
a pipe to a file an image is written. The default image format is PNG.
"""
import sys
import optparse
import qrcode
default_factories = {
'pil': 'qrcode.image.pil.PilImage',
'pymaging': 'qrcode.image.pure.PymagingImage',
'svg': 'qrcode.image.svg.SvgImage',
'svg-fragment': 'qrcode.image.svg.SvgFragmentImage',
'svg-path': 'qrcode.image.svg.SvgPathImage',
}
def main(*args):
qr = qrcode.QRCode()
parser = optparse.OptionParser(usage=__doc__.strip())
parser.add_option(
"--factory", help="Full python path to the image factory class to "
"create the image with. You can use the following shortcuts to the "
"built-in image factory classes: {0}.".format(
", ".join(sorted(default_factories.keys()))))
parser.add_option(
"--optimize", type=int, help="Optimize the data by looking for chunks "
"of at least this many characters that could use a more efficient "
"encoding method. Use 0 to turn off chunk optimization.")
opts, args = parser.parse_args(list(args))
if opts.factory:
module = default_factories.get(opts.factory, opts.factory)
if '.' not in module:
parser.error("The image factory is not a full python path")
module, name = module.rsplit('.', 1)
imp = __import__(module, {}, [], [name])
image_factory = getattr(imp, name)
else:
image_factory = None
if args:
data = args[0]
else:
data = sys.stdin.read()
if opts.optimize is None:
qr.add_data(data)
else:
qr.add_data(data, optimize=opts.optimize)
if image_factory is None and sys.stdout.isatty():
qr.print_ascii(tty=True)
return
img = qr.make_image(image_factory=image_factory)
img.save(sys.stdout)
if __name__ == "__main__":
main(*sys.argv[1:])
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