1 | # PyKota |
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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 | # This program is free software; you can redistribute it and/or modify |
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7 | # it under the terms of the GNU General Public License as published by |
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8 | # the Free Software Foundation; either version 2 of the License, or |
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9 | # (at your option) any later version. |
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10 | # |
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11 | # This program is distributed in the hope that it will be useful, |
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12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | # GNU General Public License for more details. |
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15 | # |
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16 | # You should have received a copy of the GNU General Public License |
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17 | # along with this program; if not, write to the Free Software |
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18 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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19 | # |
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20 | # $Id$ |
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21 | # |
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22 | # $Log$ |
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23 | # Revision 1.6 2003/03/29 13:45:27 jalet |
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24 | # GPL paragraphs were incorrectly (from memory) copied into the sources. |
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25 | # Two README files were added. |
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26 | # Upgrade script for PostgreSQL pre 1.01 schema was added. |
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27 | # |
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28 | # Revision 1.5 2003/02/10 00:42:17 jalet |
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29 | # External requester should be ok (untested) |
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30 | # New syntax for configuration file wrt requesters |
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31 | # |
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32 | # Revision 1.4 2003/02/09 13:05:43 jalet |
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33 | # Internationalization continues... |
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34 | # |
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35 | # Revision 1.3 2003/02/05 22:10:29 jalet |
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36 | # Typos |
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37 | # |
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38 | # Revision 1.2 2003/02/05 22:02:22 jalet |
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39 | # __import__ statement didn't work as expected |
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40 | # |
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41 | # Revision 1.1 2003/02/05 21:28:17 jalet |
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42 | # Initial import into CVS |
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43 | # |
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44 | # |
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45 | # |
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46 | |
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47 | class PyKotaRequesterError(Exception): |
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48 | """An exception for Requester related stuff.""" |
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49 | def __init__(self, message = ""): |
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50 | self.message = message |
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51 | Exception.__init__(self, message) |
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52 | def __repr__(self): |
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53 | return self.message |
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54 | __str__ = __repr__ |
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55 | |
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56 | def openRequester(config, printername) : |
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57 | """Returns a connection handle to the appropriate requester.""" |
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58 | (backend, args) = config.getRequesterBackend(printername) |
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59 | try : |
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60 | if not backend.isalpha() : |
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61 | # don't trust user input |
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62 | raise ImportError |
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63 | exec "from pykota.requesters import %s as requesterbackend" % backend.lower() |
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64 | except ImportError : |
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65 | raise PyKotaRequesterError, _("Unsupported requester backend %s") % backend |
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66 | else : |
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67 | return getattr(requesterbackend, "Requester")(config, printername, args) |
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