1 | #! /usr/bin/env python |
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2 | # -*- coding: UTF-8 -*- |
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3 | # |
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4 | # PyKota : Print Quotas for CUPS |
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5 | # |
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6 | # (c) 2003, 2004, 2005, 2006, 2007, 2008 Jerome Alet <alet@librelogiciel.com> |
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7 | # This program is free software: you can redistribute it and/or modify |
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8 | # it under the terms of the GNU General Public License as published by |
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9 | # the Free Software Foundation, either version 3 of the License, or |
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10 | # (at your option) any later version. |
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11 | # |
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12 | # This program is distributed in the hope that it will be useful, |
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13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | # GNU General Public License for more details. |
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16 | # |
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17 | # You should have received a copy of the GNU General Public License |
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18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 | # |
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20 | # $Id$ |
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21 | # |
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22 | # |
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23 | |
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24 | import sys |
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25 | import os |
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26 | import pwd |
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27 | import time |
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28 | import cStringIO |
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29 | |
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30 | try : |
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31 | from reportlab.pdfgen import canvas |
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32 | from reportlab.lib import pagesizes |
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33 | from reportlab.lib.units import cm |
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34 | except ImportError : |
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35 | hasRL = False |
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36 | else : |
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37 | hasRL = True |
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38 | |
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39 | try : |
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40 | import PIL.Image |
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41 | except ImportError : |
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42 | hasPIL = False |
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43 | else : |
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44 | hasPIL = True |
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45 | |
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46 | import pykota.appinit |
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47 | from pykota.utils import * |
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48 | |
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49 | from pykota.errors import PyKotaToolError, PyKotaCommandLineError |
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50 | from pykota.tool import Percent, PyKotaTool |
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51 | |
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52 | __doc__ = N_("""pkinvoice v%(__version__)s (c) %(__years__)s %(__author__)s |
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53 | |
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54 | An invoice generator for PyKota. |
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55 | |
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56 | command line usage : |
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57 | |
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58 | pkinvoice [options] [filterexpr] |
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59 | |
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60 | options : |
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61 | |
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62 | -v | --version Prints pkinvoice's version number then exits. |
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63 | -h | --help Prints this message then exits. |
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64 | |
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65 | -l | --logo img Use the image as the invoice's logo. The logo will |
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66 | be drawn at the center top of the page. The default |
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67 | logo is /usr/share/pykota/logos/pykota.jpeg |
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68 | |
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69 | -p | --pagesize sz Sets sz as the page size. Most well known |
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70 | page sizes are recognized, like 'A4' or 'Letter' |
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71 | to name a few. The default size is A4. |
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72 | |
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73 | -n | --number N Sets the number of the first invoice. This number |
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74 | will automatically be incremented for each invoice. |
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75 | |
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76 | -o | --output f.pdf Defines the name of the invoice file which will |
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77 | be generated as a PDF document. If not set or |
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78 | set to '-', the PDF document is sent to standard |
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79 | output. |
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80 | |
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81 | -u | --unit u Defines the name of the unit to use on the invoice. |
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82 | The default unit is 'Credits', optionally translated |
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83 | to your native language if it is supported by PyKota. |
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84 | |
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85 | -V | --vat p Sets the percent value of the applicable VAT to be |
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86 | exposed. The default is 0.0, meaning no VAT |
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87 | information will be included. |
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88 | |
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89 | |
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90 | Use the filter expressions to extract only parts of the |
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91 | datas. Allowed filters are of the form : |
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92 | |
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93 | key=value |
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94 | |
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95 | Allowed keys for now are : |
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96 | |
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97 | username User's name |
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98 | printername Printer's name |
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99 | hostname Client's hostname |
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100 | jobid Job's Id |
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101 | billingcode Job's billing code |
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102 | start Job's date of printing |
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103 | end Job's date of printing |
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104 | |
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105 | Dates formatting with 'start' and 'end' filter keys : |
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106 | |
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107 | YYYY : year boundaries |
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108 | YYYYMM : month boundaries |
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109 | YYYYMMDD : day boundaries |
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110 | YYYYMMDDhh : hour boundaries |
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111 | YYYYMMDDhhmm : minute boundaries |
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112 | YYYYMMDDhhmmss : second boundaries |
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113 | yesterday[+-NbDays] : yesterday more or less N days (e.g. : yesterday-15) |
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114 | today[+-NbDays] : today more or less N days (e.g. : today-15) |
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115 | tomorrow[+-NbDays] : tomorrow more or less N days (e.g. : tomorrow-15) |
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116 | now[+-NbDays] : now more or less N days (e.g. now-15) |
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117 | |
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118 | 'now' and 'today' are not exactly the same since today represents the first |
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119 | or last second of the day depending on if it's used in a start= or end= |
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120 | date expression. The utility to be able to specify dates in the future is |
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121 | a question which remains to be answered :-) |
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122 | |
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123 | Contrary to other PyKota management tools, wildcard characters are not |
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124 | expanded, so you can't use them. |
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125 | |
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126 | examples : |
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127 | |
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128 | $ pkinvoice --unit EURO --output /tmp/invoices.pdf start=now-30 |
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129 | |
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130 | Will generate a PDF document containing invoices for all users |
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131 | who have spent some credits last month. Invoices will be done in |
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132 | EURO. No VAT information will be included. |
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133 | """) |
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134 | |
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135 | class PKInvoice(PyKotaTool) : |
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136 | """A class for invoice generator.""" |
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137 | validfilterkeys = [ "username", |
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138 | "printername", |
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139 | "hostname", |
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140 | "jobid", |
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141 | "billingcode", |
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142 | "start", |
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143 | "end", |
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144 | ] |
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145 | |
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146 | def getPageSize(self, pgsize) : |
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147 | """Returns the correct page size or None if not found.""" |
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148 | try : |
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149 | return getattr(pagesizes, pgsize.upper()) |
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150 | except AttributeError : |
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151 | try : |
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152 | return getattr(pagesizes, pgsize.lower()) |
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153 | except AttributeError : |
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154 | pass |
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155 | |
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156 | def printVar(self, label, value, size) : |
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157 | """Outputs a variable onto the PDF canvas. |
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158 | |
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159 | Returns the number of points to substract to current Y coordinate. |
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160 | """ |
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161 | xcenter = (self.pagesize[0] / 2.0) - 1*cm |
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162 | self.canvas.saveState() |
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163 | self.canvas.setFont("Helvetica-Bold", size) |
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164 | self.canvas.setFillColorRGB(0, 0, 0) |
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165 | self.canvas.drawRightString(xcenter, self.ypos, "%s :" % label) |
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166 | self.canvas.setFont("Courier-Bold", size) |
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167 | self.canvas.setFillColorRGB(0, 0, 1) |
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168 | self.canvas.drawString(xcenter + 0.5*cm, self.ypos, value) |
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169 | self.canvas.restoreState() |
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170 | self.ypos -= (size + 4) |
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171 | |
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172 | def pagePDF(self, invoicenumber, name, values, unit, vat) : |
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173 | """Generates a new page in the PDF document.""" |
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174 | amount = values["nbcredits"] |
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175 | if amount : # is there's something due ? |
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176 | ht = ((amount * 10000.0) / (100.0 + vat)) / 100.0 |
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177 | vatamount = amount - ht |
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178 | self.canvas.doForm("background") |
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179 | self.ypos = self.yorigine - (cm + 20) |
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180 | self.printVar(_("Invoice"), "#%s" % invoicenumber, 22) |
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181 | self.printVar(_("Username"), name, 22) |
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182 | self.ypos -= 20 |
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183 | self.printVar(_("Edited on"), time.strftime("%c", time.localtime()), 14) |
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184 | |
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185 | self.ypos -= 20 |
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186 | self.printVar(_("Number of jobs printed"), str(values["nbjobs"]), 18) |
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187 | self.printVar(_("Number of pages printed"), str(values["nbpages"]), 18) |
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188 | self.ypos -= 20 |
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189 | self.printVar(_("Amount due"), "%.3f %s" % (amount, unit), 18) |
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190 | if vat : |
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191 | self.ypos += 8 |
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192 | self.printVar("%s (%.2f%%)" % (_("Included VAT"), vat), "%.3f %s" % (vatamount, unit), 14) |
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193 | self.canvas.showPage() |
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194 | return 1 |
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195 | return 0 |
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196 | |
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197 | def initPDF(self, logo) : |
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198 | """Initializes the PDF document.""" |
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199 | self.pdfDocument = cStringIO.StringIO() |
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200 | self.canvas = c = canvas.Canvas(self.pdfDocument, \ |
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201 | pagesize=self.pagesize, \ |
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202 | pageCompression=1) |
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203 | |
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204 | c.setAuthor(self.effectiveUserName) |
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205 | c.setTitle(_("PyKota invoices")) |
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206 | c.setSubject(_("Invoices generated with PyKota")) |
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207 | |
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208 | self.canvas.beginForm("background") |
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209 | self.canvas.saveState() |
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210 | |
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211 | self.ypos = self.pagesize[1] - (2 * cm) |
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212 | |
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213 | xcenter = self.pagesize[0] / 2.0 |
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214 | if logo : |
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215 | try : |
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216 | imglogo = PIL.Image.open(logo) |
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217 | except IOError : |
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218 | self.printInfo("Unable to open image %s" % logo, "warn") |
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219 | else : |
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220 | (width, height) = imglogo.size |
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221 | multi = float(width) / (8 * cm) |
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222 | width = float(width) / multi |
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223 | height = float(height) / multi |
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224 | self.ypos -= height |
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225 | c.drawImage(logo, xcenter - (width / 2.0), \ |
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226 | self.ypos, \ |
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227 | width, height) |
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228 | |
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229 | self.ypos -= (cm + 20) |
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230 | self.canvas.setFont("Helvetica-Bold", 14) |
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231 | self.canvas.setFillColorRGB(0, 0, 0) |
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232 | msg = _("Here's the invoice for your printouts") |
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233 | self.canvas.drawCentredString(xcenter, self.ypos, "%s :" % msg) |
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234 | |
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235 | self.yorigine = self.ypos |
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236 | self.canvas.restoreState() |
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237 | self.canvas.endForm() |
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238 | |
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239 | def endPDF(self, fname) : |
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240 | """Flushes the PDF generator.""" |
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241 | self.canvas.save() |
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242 | if fname != "-" : |
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243 | outfile = open(fname, "w") |
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244 | outfile.write(self.pdfDocument.getvalue()) |
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245 | outfile.close() |
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246 | else : |
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247 | sys.stdout.write(self.pdfDocument.getvalue()) |
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248 | sys.stdout.flush() |
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249 | |
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250 | def genInvoices(self, peruser, logo, outfname, firstnumber, unit, vat) : |
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251 | """Generates the invoices file.""" |
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252 | if len(peruser) : |
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253 | percent = Percent(self) |
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254 | percent.setSize(len(peruser)) |
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255 | if outfname != "-" : |
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256 | percent.display("%s...\n" % _("Generating invoices")) |
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257 | |
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258 | self.initPDF(logo) |
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259 | number = firstnumber |
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260 | for (name, values) in peruser.items() : |
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261 | number += self.pagePDF(number, name, values, unit, vat) |
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262 | if outfname != "-" : |
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263 | percent.oneMore() |
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264 | |
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265 | if number > firstnumber : |
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266 | self.endPDF(outfname) |
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267 | |
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268 | if outfname != "-" : |
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269 | percent.done() |
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270 | |
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271 | def main(self, arguments, options) : |
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272 | """Generate invoices.""" |
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273 | if not hasRL : |
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274 | raise PyKotaToolError, "The ReportLab module is missing. Download it from http://www.reportlab.org" |
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275 | if not hasPIL : |
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276 | raise PyKotaToolError, "The Python Imaging Library is missing. Download it from http://www.pythonware.com/downloads" |
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277 | |
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278 | if not self.config.isAdmin : |
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279 | raise PyKotaCommandLineError, "%s : %s" % (pwd.getpwuid(os.geteuid())[0], _("You're not allowed to use this command.")) |
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280 | |
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281 | try : |
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282 | vat = float(options["vat"]) |
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283 | if not (0.0 <= vat < 100.0) : |
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284 | raise ValueError |
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285 | except : |
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286 | raise PyKotaCommandLineError, _("Incorrect value '%s' for the --vat command line option") % options["vat"] |
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287 | |
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288 | try : |
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289 | firstnumber = number = int(options["number"]) |
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290 | if number <= 0 : |
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291 | raise ValueError |
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292 | except : |
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293 | raise PyKotaCommandLineError, _("Incorrect value '%s' for the --number command line option") % options["number"] |
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294 | |
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295 | self.pagesize = self.getPageSize(options["pagesize"]) |
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296 | if self.pagesize is None : |
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297 | self.pagesize = self.getPageSize("a4") |
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298 | self.printInfo(_("Invalid 'pagesize' option %s, defaulting to A4.") % options["pagesize"], "warn") |
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299 | |
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300 | extractonly = {} |
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301 | for filterexp in arguments : |
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302 | if filterexp.strip() : |
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303 | try : |
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304 | (filterkey, filtervalue) = [part.strip() for part in filterexp.split("=")] |
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305 | filterkey = filterkey.lower() |
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306 | if filterkey not in self.validfilterkeys : |
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307 | raise ValueError |
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308 | except ValueError : |
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309 | raise PyKotaCommandLineError, _("Invalid filter value [%s], see help.") % filterexp |
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310 | else : |
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311 | extractonly.update({ filterkey : filtervalue }) |
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312 | |
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313 | percent = Percent(self) |
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314 | outfname = options["output"].strip() |
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315 | if outfname != "-" : |
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316 | percent.display("%s..." % _("Extracting datas")) |
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317 | |
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318 | username = extractonly.get("username") |
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319 | if username : |
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320 | user = self.storage.getUser(username) |
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321 | else : |
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322 | user = None |
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323 | |
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324 | printername = extractonly.get("printername") |
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325 | if printername : |
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326 | printer = self.storage.getPrinter(printername) |
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327 | else : |
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328 | printer = None |
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329 | |
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330 | start = extractonly.get("start") |
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331 | end = extractonly.get("end") |
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332 | (start, end) = self.storage.cleanDates(start, end) |
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333 | |
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334 | jobs = self.storage.retrieveHistory(user=user, |
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335 | printer=printer, |
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336 | hostname=extractonly.get("hostname"), |
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337 | billingcode=extractonly.get("billingcode"), |
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338 | jobid=extractonly.get("jobid"), |
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339 | start=start, |
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340 | end=end, |
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341 | limit=0) |
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342 | |
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343 | peruser = {} |
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344 | nbjobs = 0 |
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345 | nbpages = 0 |
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346 | nbcredits = 0.0 |
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347 | percent.setSize(len(jobs)) |
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348 | if outfname != "-" : |
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349 | percent.display("\n") |
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350 | for job in jobs : |
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351 | if job.JobSize and (job.JobAction not in ("DENY", "CANCEL", "REFUND")) : |
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352 | nbpages += job.JobSize |
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353 | nbcredits += job.JobPrice |
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354 | counters = peruser.setdefault(job.UserName, { "nbjobs" : 0, "nbpages" : 0, "nbcredits" : 0.0 }) |
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355 | counters["nbpages"] += job.JobSize |
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356 | counters["nbcredits"] += job.JobPrice |
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357 | counters["nbjobs"] += 1 |
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358 | nbjobs += 1 |
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359 | if outfname != "-" : |
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360 | percent.oneMore() |
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361 | if outfname != "-" : |
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362 | percent.done() |
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363 | self.genInvoices(peruser, options["logo"].strip(), outfname, firstnumber, options["unit"], vat) |
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364 | if outfname != "-" : |
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365 | print _("Invoiced %i users for %i jobs, %i pages and %.3f credits") % (len(peruser), nbjobs, nbpages, nbcredits) |
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366 | |
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367 | if __name__ == "__main__" : |
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368 | retcode = 0 |
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369 | try : |
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370 | defaults = { "vat" : "0.0", |
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371 | "unit" : N_("Credits"), |
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372 | "output" : "-", |
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373 | "pagesize" : "a4", \ |
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374 | "logo" : "/usr/share/pykota/logos/pykota.jpeg", |
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375 | "number" : "1", |
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376 | } |
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377 | short_options = "vho:u:V:p:l:n:" |
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378 | long_options = ["help", "version", "unit=", "output=", \ |
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379 | "pagesize=", "logo=", "vat=", "number="] |
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380 | |
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381 | # Initializes the command line tool |
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382 | invoiceGenerator = PKInvoice(doc=__doc__) |
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383 | invoiceGenerator.deferredInit() |
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384 | |
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385 | # parse and checks the command line |
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386 | (options, args) = invoiceGenerator.parseCommandline(sys.argv[1:], short_options, long_options, allownothing=True) |
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387 | |
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388 | # sets long options |
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389 | options["help"] = options["h"] or options["help"] |
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390 | options["version"] = options["v"] or options["version"] |
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391 | |
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392 | options["vat"] = options["V"] or options["vat"] or defaults["vat"] |
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393 | options["unit"] = options["u"] or options["unit"] or defaults["unit"] |
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394 | options["output"] = options["o"] or options["output"] or defaults["output"] |
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395 | options["pagesize"] = options["p"] or options["pagesize"] or defaults["pagesize"] |
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396 | options["number"] = options["n"] or options["number"] or defaults["number"] |
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397 | options["logo"] = options["l"] or options["logo"] |
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398 | if options["logo"] is None : # Allows --logo="" to disable the logo entirely |
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399 | options["logo"] = defaults["logo"] |
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400 | |
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401 | if options["help"] : |
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402 | invoiceGenerator.display_usage_and_quit() |
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403 | elif options["version"] : |
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404 | invoiceGenerator.display_version_and_quit() |
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405 | else : |
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406 | retcode = invoiceGenerator.main(args, options) |
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407 | except KeyboardInterrupt : |
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408 | logerr("\nInterrupted with Ctrl+C !\n") |
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409 | retcode = -3 |
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410 | except PyKotaCommandLineError, msg : |
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411 | logerr("%s : %s\n" % (sys.argv[0], msg)) |
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412 | retcode = -2 |
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413 | except SystemExit : |
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414 | pass |
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415 | except : |
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416 | try : |
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417 | invoiceGenerator.crashed("pkinvoice failed") |
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418 | except : |
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419 | crashed("pkinvoice failed") |
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420 | retcode = -1 |
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421 | |
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422 | try : |
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423 | invoiceGenerator.storage.close() |
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424 | except (TypeError, NameError, AttributeError) : |
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425 | pass |
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426 | |
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427 | sys.exit(retcode) |
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