#!@PYTHON@
import sys
import getopt
from sys import argv
try:
    import zbar
except ImportError as e:
    print 'Cannot run gnunet-qr, please install zbar-python'
    sys.exit (1)

def help ():
 print 'gnunet-qr\n\
Scan a QR code using a video device and import\n\
Arguments mandatory for long options are also mandatory for short options.\n\
  -c, --config=FILENAME      use configuration file FILENAME\n\
  -d, --device=DEVICE        use device DEVICE\n\
  -s, --silent               do not show preview windows\n\
  -h, --help                 print this help\n\
Report bugs to gnunet-developers@gnu.org.\n\
GNUnet home page: http://www.gnu.org/software/gnunet/\n\
General help using GNU software: http://www.gnu.org/gethelp/'


if __name__ == '__main__':
	configuration = ''
	device = '/dev/video0'
	silent = False
	# Parse arguments
	try:
		opts, args = getopt.gnu_getopt(sys.argv[1:], "c:hd:s", ["config","help", "device","silent"])
	except getopt.GetoptError as e:
		help ()
		print str (e)
		exit (1)

		for o,a in opts:
			if o in ("-h", "--help"):
				help ()            
				sys.exit (0)
			elif o in ("-c", "--config"):
				configuration = a
			elif o in ("-d", "--device"):
				device = a
			elif o in ("-s", "--silent"):
				silent = True
	# create a Processor
	proc = zbar.Processor()

	# configure the Processor
	proc.parse_config('enable')

	# initialize the Processor
	try:
		proc.init(device)
	except Exception as e:
		print 'Failed to open device ' + device
		exit (1)
	
	# enable the preview window
	if (True == silent):
		proc.visible = False
	else:
		proc.visible = True
	
	# read at least one barcode (or until window closed)
	try:
		proc.process_one()
	except Exception as e:
		# Window was closed without finding code
		exit (1)
	
	# hide the preview window
	proc.visible = False
	
	# extract results
	for symbol in proc.results:
	# do something useful with results
		print 'Found ', symbol.type, ' symbol ', '"%s"' % symbol.data