root / pykota / trunk / bin / pkprinters @ 1331

#! /usr/bin/env python
# -*- coding: ISO-8859-15 -*-

# PyKota Printers Manager
#
# PyKota - Print Quotas for CUPS and LPRng
#
# (c) 2003-2004 Jerome Alet <alet@librelogiciel.com>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
#
# $Id$
#
# $Log$
# Revision 1.2  2004/02/04 12:52:37  jalet
# pkprinters' help
#
# Revision 1.1  2004/02/04 11:16:59  jalet
# pkprinters command line tool added.
#
#
#

import sys

from pykota import version
from pykota.tool import PyKotaTool, PyKotaToolError
from pykota.config import PyKotaConfigError
from pykota.storage import PyKotaStorageError

__doc__ = """pkprinters v%s (c) 2003-2004 C@LL - Conseil Internet & Logiciels Libres
A Printers Manager for PyKota.

command line usage :

  pkprinters [options] printer1 printer2 printer3 ... printerN

options :

  -v | --version       Prints pkprinters's version number then exits.
  -h | --help          Prints this message then exits.
  
  -a | --add           Adds printers if they don't exist on the Quota 
                       Storage Server.
                       
  -d | --delete        Deletes printers from the quota storage.
                       
  -c | --charge p[,j]  Sets the price per page and per job to charge.
                       Job price is optional.
                       If both are to be set, separate them with a comma.
                       Floating point and negative values are allowed.
  
  -g | --groups pg1[,pg2...] Adds the printer(s) to the printer groups
                       pg1, pg2, etc... which must already exist.
                       A printer group is just like a normal printer,
                       only that it is usually unknown from the printing
                       system. Create printer groups exactly the same
                       way that you create printers, then add other 
                       printers to them with this option.
                       Accounting is done on a printer and on all
                       the printer groups it belongs to, quota checking
                       is done on a printer and on all the printer groups
                       it belongs to.
  
  printer1 through printerN can contain wildcards if the --add option 
  is not set.
  
examples :                              

  $ pkprinters --add --charge 0.05,0.1 hp2100 hp2200 hp8000
  
  Will create three printers named hp2100, hp2200 and hp8000
  or modify them if they already exist.
  Their price per page will be set at 0.05 unit, and their price
  per job will be set at 0.1 unit. Units are in your own currency,
  or whatever you want them to mean.
            
  $ pkprinters --delete "*"
  
  This will completely delete all printers and associated quota information,
  as well as their job history. USE WITH CARE !
  
  $ pkprinters --groups Laser,HP "hp*"
  
  This will put all printers which name matches "hp*" into printers groups 
  Laser and HP, which MUST already exist.
  
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

Please e-mail bugs to: %s""" % (version.__version__, version.__author__)
        
class PKPrinters(PyKotaTool) :        
    """A class for edpykota."""
    def main(self, names, options) :
        """Manage printers."""
        if options["groups"] :        
            printersgroups = self.storage.getMatchingPrinters(options["groups"])
            if not printersgroups :
                raise PyKotaToolError, _("There's no printer matching %s") % " ".join(options["groups"].split(','))
            
        if options["charge"] :
            try :
                charges = [float(part) for part in options["charge"].split(',', 1)]
            except ValueError :    
                raise PyKotaToolError, _("Invalid charge amount value %s") % options["charge"]
            else :    
                if len(charges) > 2 :
                    charges = charges[:2]
                if len(charges) != 2 :
                    charges = [charges[0], None]
                (perpage, perjob) = charges
                
        if options["add"] :    
            printers = []
            for pname in names :
                printer = self.storage.getPrinter(pname)
                if not printer.Exists :
                    if self.isValidName(pname) :
                        printer = self.storage.addPrinter(pname)
                        if not printer.Exists :
                            raise PyKotaToolError, _("Impossible to add printer %s") % pname
                    else :    
                        raise PyKotaToolError, _("Invalid printer name %s") % pname
                printers.append(printer)
        else :        
            printers = self.storage.getMatchingPrinters(",".join(names))
            if not printers :
                raise PyKotaToolError, _("There's no printer matching %s") % " ".join(names)
                    
        for printer in printers :        
            if options["delete"] :
                printer.delete()
            else :    
                if options["charge"] :
                    printer.setPrices(perpage, perjob)    
                if options["groups"] :    
                    for pgroup in printersgroups :
                        pgroup.addPrinterToGroup(printer)    
                     
if __name__ == "__main__" : 
    retcode = 0
    try :
        short_options = "hvac:dg:"
        long_options = ["help", "version", "add", "charge=", "delete", "groups="]
        
        # Initializes the command line tool
        manager = PKPrinters(doc=__doc__)
        
        # parse and checks the command line
        (options, args) = manager.parseCommandline(sys.argv[1:], short_options, long_options)
        
        # sets long options
        options["help"] = options["h"] or options["help"]
        options["version"] = options["v"] or options["version"]
        options["add"] = options["a"] or options["add"]
        options["charge"] = options["c"] or options["charge"]
        options["delete"] = options["d"] or options["delete"] 
        options["groups"] = options["g"] or options["groups"]
        
        if options["help"] :
            manager.display_usage_and_quit()
        elif options["version"] :
            manager.display_version_and_quit()
        elif options["delete"] and (options["add"] or options["groups"] or options["charge"]) :    
            raise PyKotaToolError, _("incompatible options, see help.")
        elif not args :    
            raise PyKotaToolError, _("You have to pass printer names on the command line")
        else :
            retcode = manager.main(args, options)
    except (PyKotaToolError, PyKotaConfigError, PyKotaStorageError), msg :            
        sys.stderr.write("%s\n" % msg)
        sys.stderr.flush()
        retcode = -1

    try :
        manager.storage.close()
    except (TypeError, NameError, AttributeError) :    
        pass
        
    sys.exit(retcode)