/scripts/galaxy_messaging/client/scanner.py

import sys, os

import serial

import array

import time

import optparse

import ConfigParser, logging

from scanner_interface import ScannerInterface



logging.basicConfig(level=logging.DEBUG)

log = logging.getLogger( 'Scanner' )



# command prefix: SYN M CR

cmd = [22, 77, 13]

response = { 6: 'ACK', 5: 'ENQ', 21: 'NAK' }

image_scanner_report = 'RPTSCN.'

get_prefix1 = 'PREBK2?.'

get_prefix2 = ':4820:PREBK2?.'

set_prefix = 'PREBK2995859.'

clear_prefix = 'PRECA2.'



def get_prefix_cmd(name):

    return ':' + name + ':' + 'PREBK2?.'



def set_prefix_cmd(name, prefix):

    prefix_str = ''

    for c in prefix:

        prefix_str = prefix_str + hex(ord(c))[2:]

    return ':' + name + ':' + 'PREBK299' + prefix_str + '!'



def read_config_file(config_file):

    config = ConfigParser.ConfigParser()

    config.read(config_file)

    count = 1

    scanners_list = []

    while True:

        section = 'scanner%i' % count

        if config.has_section(section):

            scanner = dict(name=config.get(section, 'name'),

                           prefix=config.get(section, 'prefix'),

                           state=config.get(section, 'state'))

            scanners_list.append(scanner)

            count = count + 1

        else:

            return scanners_list



def main():

    usage = "python %s -p PORT -c CONFIG_FILE [ OPTION ]" % sys.argv[0]

    parser = optparse.OptionParser(usage=usage)

    parser.add_option('-p', '--port', help='Name of the port where the scanner is connected', 

                      dest='port', action='store')

    parser.add_option('-c', '--config-file', help='config file with all the AMQP config parameters', 

                      dest='config_file', action='store')

    parser.add_option('-r', '--report', help='scanner report', 

                      dest='report', action='store_true', default=False)

    parser.add_option('-i', '--install', help='install the scanners', 

                      dest='install', action='store_true', default=False)

    (opts, args) = parser.parse_args()

    # validate 

    if not opts.port:

        parser.print_help()

        sys.exit(0)

    if ( opts.report or opts.install ) and not opts.config_file:

        parser.print_help()

        sys.exit(0)



    # create the scanner interface

    si = ScannerInterface(opts.port)

    if opts.install:

        scanners_list = read_config_file(opts.config_file)

        for scanner in scanners_list:

            msg = set_prefix_cmd(scanner['name'], scanner['prefix'])

            si.send(msg)

            response = si.recv()

            if not response:

                log.error("Scanner %s could not be installed." % scanner['name'])

    elif opts.report:

        si.send(image_scanner_report)

        rep = si.recv()

        log.info(rep)

        scanners_list = read_config_file(opts.config_file)

        for scanner in scanners_list:

            msg = get_prefix_cmd(scanner['name'])

            si.send(msg)

            response = si.recv()

            if response:

                log.info('PREFIX for scanner %s: %s' % (scanner['name'],  chr(int(response[8:12][:2], 16))+chr(int(response[8:12][2:], 16))   ))

    si.close()

    

    



if __name__ == "__main__":

    main()