AddPrinter-Template.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>autoremove</key>
	<false/>
	<key>catalogs</key>
	<array>
		<string>testing</string>
	</array>
	<key>description</key>
	<string>DESCRIPTION</string>
	<key>display_name</key>
	<string>DISPLAY_NAME</string>
	<key>installcheck_script</key>
	<string>#!/usr/bin/python
import subprocess
import sys
import shlex

printerOptions = { OPTIONS }

cmd = ['/usr/bin/lpoptions', '-p', 'PRINTERNAME', '-l']
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(lpoptLongOut, lpoptErr) = proc.communicate()

# lpoptions -p printername -l will still exit 0 even if printername does not exist
# but it will print to stderr
if lpoptErr:
    print(lpoptErr)
    sys.exit(0)

cmd = ['/usr/bin/lpoptions', '-p', 'PRINTERNAME']
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(lpoptOut, lpoptErr) = proc.communicate()

#Note: lpoptions -p printername will never fail. If PRINTERNAME does not exist, it
#will still exit 0, but just produce no output.
#Thanks, cups, I was having a good day until now.

for option in lpoptLongOut.splitlines():
    for myOption in printerOptions.keys():
        optionName = option.split("/", 1)[0]
        optionValues = option.split("/",1)[1].split(":")[1].strip().split(" ")
        for opt in optionValues:
            if "*" in opt:
                actualOptionValue = opt.replace('*', '')
                break
        if optionName == myOption:
            if not printerOptions[myOption].lower() == actualOptionValue.lower():
                print("Found mismatch: %s is '%s', should be '%s'" % (myOption, printerOptions[myOption], actualOptionValue))
                sys.exit(0)

optionDict = {}
for builtOption in shlex.split(lpoptOut):
    try:
        optionDict[builtOption.split("=")[0]] = builtOption.split("=")[1]
    except:
        optionDict[builtOption.split("=")[0]] = None

comparisonDict = { "device-uri":"ADDRESS", "printer-info":"DISPLAY_NAME", "printer-location":"LOCATION" }
for keyName in comparisonDict.keys():
    comparisonDict[keyName] = None if comparisonDict[keyName].strip() == "" else comparisonDict[keyName]
    optionDict[keyName] = None if keyName not in optionDict or optionDict[keyName].strip() == "" else optionDict[keyName]
    if not comparisonDict[keyName] == optionDict[keyName]:
        print("Settings mismatch: %s is '%s', should be '%s'" % (keyName, optionDict[keyName], comparisonDict[keyName]))
        sys.exit(0)

sys.exit(1)</string>
	<key>installer_type</key>
	<string>nopkg</string>
	<key>minimum_os_version</key>
	<string>10.7.0</string>
	<key>name</key>
	<string>AddPrinter_DISPLAYNAME</string>
	<key>postinstall_script</key>
	<string>#!/usr/bin/python
import subprocess
import sys

# Populate these options if you want to set specific options for the printer. E.g. duplexing installed, etc.
printerOptions = { OPTIONS }

cmd = [ '/usr/sbin/lpadmin', '-x', 'PRINTERNAME' ]
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(lpadminxOut, lpadminxErr) = proc.communicate()

# Install the printer
cmd = [ '/usr/sbin/lpadmin',
        '-p', 'PRINTERNAME',
        '-L', 'LOCATION',
        '-D', 'DISPLAY_NAME',
        '-v', 'ADDRESS',
        '-P', "DRIVER",
        '-E',
        '-o', 'printer-is-shared=false',
        '-o', 'printer-error-policy=abort-job' ]

for option in printerOptions.keys():
    cmd.append("-o")
    cmd.append(str(option) + "=" +  str(printerOptions[option]))

proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(lpadminOut, lpadminErr) = proc.communicate()

if lpadminErr:
        if "Printer drivers are deprecated" in lpadminErr:
                # work around lpadmin deprecation message
                print "Install successful - caught deprecation message; preventing exit 1"
                pass
        else:
                print "Error: %s" % lpadminErr
                sys.exit(1)
print("Results: %s" % lpadminOut)
sys.exit(0)</string>
	<key>unattended_install</key>
	<true/>
	<key>uninstall_method</key>
	<string>uninstall_script</string>
	<key>uninstall_script</key>
	<string>#!/bin/bash
/usr/sbin/lpadmin -x PRINTERNAME</string>
	<key>uninstallable</key>
	<true/>
	<key>version</key>
	<string>VERSION</string>
</dict>
</plist>