| 1 | #! /usr/bin/env python |
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| 2 | |
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| 3 | # PyKota - Print Quotas for CUPS |
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| 4 | # |
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| 5 | # (c) 2003 Jerome Alet <alet@librelogiciel.com> |
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| 6 | # You're welcome to redistribute this software under the |
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| 7 | # terms of the GNU General Public Licence version 2.0 |
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| 8 | # or, at your option, any higher version. |
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| 9 | # |
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| 10 | # You can read the complete GNU GPL in the file COPYING |
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| 11 | # which should come along with this software, or visit |
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| 12 | # the Free Software Foundation's WEB site http://www.fsf.org |
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| 13 | # |
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| 14 | # $Id$ |
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| 15 | # |
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| 16 | # $Log$ |
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| 17 | # Revision 1.5 2003/02/10 11:47:39 jalet |
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| 18 | # Moved some code down into the requesters |
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| 19 | # |
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| 20 | # Revision 1.4 2003/02/10 10:36:33 jalet |
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| 21 | # Small problem wrt external requester |
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| 22 | # |
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| 23 | # Revision 1.3 2003/02/10 00:42:17 jalet |
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| 24 | # External requester should be ok (untested) |
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| 25 | # New syntax for configuration file wrt requesters |
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| 26 | # |
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| 27 | # Revision 1.2 2003/02/09 13:05:43 jalet |
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| 28 | # Internationalization continues... |
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| 29 | # |
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| 30 | # Revision 1.1 2003/02/07 13:15:01 jalet |
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| 31 | # External requester skeleton added. |
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| 32 | # |
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| 33 | # |
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| 34 | # |
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| 35 | |
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| 36 | import os |
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| 37 | from pykota.requester import PyKotaRequesterError |
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| 38 | |
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| 39 | class Requester : |
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| 40 | """A class to send queries to printers via external commands.""" |
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| 41 | def __init__(self, config, printername, arguments) : |
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| 42 | """Sets instance vars depending on the current printer.""" |
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| 43 | self.printername = printername |
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| 44 | self.commandline = arguments.strip() |
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| 45 | |
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| 46 | def getPrinterPageCounter(self, printer) : |
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| 47 | """Returns the page counter from the printer via an external command. |
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| 48 | |
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| 49 | The external command must report the life time page number of the printer on stdout. |
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| 50 | """ |
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| 51 | commandline = self.commandline % locals() |
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| 52 | if printer is None : |
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| 53 | raise PyKotaRequesterError, _("Unknown printer address in EXTERNAL(%s) for printer %s") % (commandline, self.printername) |
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| 54 | answer = os.popen(commandline) |
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| 55 | try : |
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| 56 | pagecounter = int(answer.readline().strip()) |
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| 57 | except ValueError : |
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| 58 | raise PyKotaRequesterError, _("Unable to query printer %s via EXTERNAL(%s)") % (printer, commandline) |
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| 59 | answer.close() |
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| 60 | return pagecounter |
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| 61 | |
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