Wasatch Barcode "pull" in Python

This software has been produced to work with Wasatch SoftRIP and the Wasatch XML Access Option. The XML Access option is an extra-cost add on to Wasatch SoftRIP.

Pull from Central Location

Complete source code is below. This Python 3 script has been tested on Windows, and can easily be adapted for Linux or other environments. It has been kept simple to serve as an illustration. Refer to documentation for Job Submission in the XML Access Option. This is a simple piece of software. Wasatch SoftRIP and XML Access Option are doing all the "heavy lifting".

This example illustrates pulling from a central repository, as might be done in a bank of ten RIP'S running forty printers. No hot folders are involved. If you are not generally familiar with Wasatch ImageNET or Python scripting, you may wish to look at the sample for pulling from a Print Queue first.

In addition, this sample illustrates the setting of imaging configurations based on information built into file names. This models the more-complex situations found in real production environments.

This software has been tested with the Datalogic QuickScan QD2100 barcode scanner configured to communicate via 'USB-COM-STD' (simulates RS-232 standard interface). See Datalogic's Quick Reference Guide for more information.

Source Code

# Barcode pull from central repository of files, with
# partial file name matching with regex, and extraction
# of imaging configuration from file name.
#
# File naming convention is:
#    12345_acmeInk.ext
#
# Where:
#   '12345 is the job nuumber that needs to match the barcode scan
#   'acmeInk' is the imaging configuration to be used
#   'ext' is the file's extension, such as PDF, TIF, PS, or PNG
#
# Note that the path to the central repository must
# match at the location of this scanner and at
# the location of Wasatch SoftRIP.
#
import serial
import os
from os import listdir
from os.path import isfile, join
import urllib.request
import  re

scannerPort = 'COM17'
wasatchSoftRIP = '127.0.0.1:80'  # localhost - edit this to address your Wasatch SoftRIP
folder = "c:\\00temp"  # central repository of files
printUnit = 1
copiesToPrint = 1

def submitJob(file, imgConf):
    print("Submitting job '" + file + "'" + "  image config '" + imgConf + "'")
    url = 'http://' + wasatchSoftRIP + '/xmlSubmission.dyn?'
    data = '<WASATCH ACTION=JOB><PRINTUNIT>' + str(printUnit) + '</PRINTUNIT><PAGE>'
    data += '<FILENAME>' + file + '</FILENAME>'
    data += '<IMGCONF>' + imgConf + '</IMGCONF>'
    data += '<Copies>' + str(copiesToPrint) + '</Copies>'
    data += '</PAGE></WASATCH>'
    url += urllib.parse.quote_plus(data)  # escape all special characters in data
    try:
        p = urllib.request.urlopen(url)
        mybytes = p.read()
        p.close()
        print("Success")
    except:
        print("Failure")
#
# processScan looks in the central repository for a match
#
def processScan(scan):
    print("Processing scan '" + scan + "'")
    for f in listdir(folder):
        if isfile(join(folder, f)):
            t = re.split("_|\.", f) # split file name into job number, imaging configuration, and extension
            if scan == t[0]: # look for match on job number
                 submitJob(join(folder, f),  t[1]) # submit file and imaging configuration
#
# the loop to poll the scanner follows
#
try:
    scanner = serial.Serial(scannerPort, 9600, timeout=1) # 1 second timeout
    print("Watching Scanner on port " + str(scannerPort))
    while True:
        b = scanner.readline()
        s = b.decode("utf-8").rstrip("\r\n")
        if len(s) > 0:
            processScan(s)
    scanner.close()
except:
    print("Failed to access scanner on port " + scannerPort)