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) 2003-2009 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 | """An invoice generator for PyKota""" |
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25 | |
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26 | import sys |
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27 | import os |
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28 | import pwd |
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29 | import time |
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30 | import cStringIO |
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31 | |
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32 | try : |
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33 | from reportlab.pdfgen import canvas |
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34 | from reportlab.lib import pagesizes |
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35 | from reportlab.lib.units import cm |
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36 | except ImportError : |
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37 | hasRL = False |
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38 | else : |
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39 | hasRL = True |
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40 | |
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41 | try : |
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42 | import PIL.Image |
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43 | except ImportError : |
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44 | hasPIL = False |
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45 | else : |
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46 | hasPIL = True |
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47 | |
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48 | import pykota.appinit |
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49 | from pykota.utils import run |
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50 | from pykota.commandline import PyKotaOptionParser, \ |
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51 | checkandset_pagesize, \ |
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52 | checkandset_positiveint, \ |
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53 | checkandset_percent |
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54 | from pykota.pdfutils import getPageSize |
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55 | from pykota.errors import PyKotaToolError, PyKotaCommandLineError |
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56 | from pykota.tool import PyKotaTool |
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57 | from pykota.progressbar import Percent |
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58 | |
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59 | class PKInvoice(PyKotaTool) : |
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60 | """A class for invoice generator.""" |
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61 | validfilterkeys = [ "username", |
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62 | "printername", |
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63 | "hostname", |
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64 | "jobid", |
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65 | "billingcode", |
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66 | "start", |
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67 | "end", |
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68 | ] |
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69 | |
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70 | def printVar(self, label, value, size) : |
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71 | """Outputs a variable onto the PDF canvas. |
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72 | |
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73 | Returns the number of points to substract to current Y coordinate. |
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74 | """ |
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75 | xcenter = (self.pagesize[0] / 2.0) - 1*cm |
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76 | self.canvas.saveState() |
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77 | self.canvas.setFont("Helvetica-Bold", size) |
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78 | self.canvas.setFillColorRGB(0, 0, 0) |
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79 | self.canvas.drawRightString(xcenter, self.ypos, "%s :" % label) |
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80 | self.canvas.setFont("Courier-Bold", size) |
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81 | self.canvas.setFillColorRGB(0, 0, 1) |
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82 | self.canvas.drawString(xcenter + 0.5*cm, self.ypos, value) |
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83 | self.canvas.restoreState() |
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84 | self.ypos -= (size + 4) |
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85 | |
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86 | def pagePDF(self, invoicenumber, name, values, unit, vat) : |
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87 | """Generates a new page in the PDF document.""" |
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88 | amount = values["nbcredits"] |
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89 | if amount : # is there's something due ? |
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90 | ht = ((amount * 10000.0) / (100.0 + vat)) / 100.0 |
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91 | vatamount = amount - ht |
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92 | self.canvas.doForm("background") |
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93 | self.ypos = self.yorigine - (cm + 20) |
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94 | self.printVar(_("Invoice"), "#%s" % invoicenumber, 22) |
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95 | self.printVar(_("Username"), name, 22) |
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96 | self.ypos -= 20 |
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97 | datetime = time.strftime("%c", time.localtime()).decode(self.charset, "replace") |
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98 | self.printVar(_("Edited on"), datetime, 14) |
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99 | |
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100 | self.ypos -= 20 |
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101 | self.printVar(_("Number of jobs printed"), str(values["nbjobs"]), 18) |
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102 | self.printVar(_("Number of pages printed"), str(values["nbpages"]), 18) |
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103 | self.ypos -= 20 |
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104 | self.printVar(_("Amount due"), "%.3f %s" % (amount, unit), 18) |
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105 | if vat : |
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106 | self.ypos += 8 |
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107 | self.printVar("%s (%.2f%%)" % (_("Included VAT"), vat), "%.3f %s" % (vatamount, unit), 14) |
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108 | self.canvas.showPage() |
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109 | return 1 |
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110 | return 0 |
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111 | |
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112 | def initPDF(self, logo) : |
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113 | """Initializes the PDF document.""" |
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114 | self.pdfDocument = cStringIO.StringIO() |
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115 | self.canvas = c = canvas.Canvas(self.pdfDocument, \ |
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116 | pagesize=self.pagesize, \ |
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117 | pageCompression=1) |
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118 | |
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119 | c.setAuthor(self.effectiveUserName) |
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120 | c.setTitle(_("PyKota invoices")) |
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121 | c.setSubject(_("Invoices generated with PyKota")) |
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122 | |
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123 | self.canvas.beginForm("background") |
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124 | self.canvas.saveState() |
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125 | |
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126 | self.ypos = self.pagesize[1] - (2 * cm) |
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127 | |
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128 | xcenter = self.pagesize[0] / 2.0 |
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129 | if logo : |
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130 | try : |
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131 | imglogo = PIL.Image.open(logo) |
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132 | except IOError : |
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133 | self.printInfo("Unable to open image %s" % logo, "warn") |
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134 | else : |
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135 | (width, height) = imglogo.size |
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136 | multi = float(width) / (8 * cm) |
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137 | width = float(width) / multi |
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138 | height = float(height) / multi |
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139 | self.ypos -= height |
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140 | c.drawImage(logo, xcenter - (width / 2.0), \ |
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141 | self.ypos, \ |
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142 | width, height) |
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143 | |
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144 | self.ypos -= (cm + 20) |
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145 | self.canvas.setFont("Helvetica-Bold", 14) |
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146 | self.canvas.setFillColorRGB(0, 0, 0) |
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147 | msg = _("Here's the invoice for your printouts") |
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148 | self.canvas.drawCentredString(xcenter, self.ypos, "%s :" % msg) |
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149 | |
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150 | self.yorigine = self.ypos |
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151 | self.canvas.restoreState() |
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152 | self.canvas.endForm() |
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153 | |
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154 | def endPDF(self, fname) : |
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155 | """Flushes the PDF generator.""" |
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156 | self.canvas.save() |
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157 | if fname != "-" : |
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158 | outfile = open(fname, "w") |
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159 | outfile.write(self.pdfDocument.getvalue()) |
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160 | outfile.close() |
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161 | else : |
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162 | sys.stdout.write(self.pdfDocument.getvalue()) |
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163 | sys.stdout.flush() |
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164 | |
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165 | def genInvoices(self, peruser, logo, outfname, firstnumber, unit, vat) : |
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166 | """Generates the invoices file.""" |
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167 | if len(peruser) : |
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168 | percent = Percent(self, size=len(peruser)) |
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169 | if outfname != "-" : |
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170 | percent.display("%s...\n" % _("Generating invoices")) |
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171 | |
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172 | self.initPDF(logo) |
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173 | number = firstnumber |
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174 | for (name, values) in peruser.items() : |
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175 | number += self.pagePDF(number, name, values, unit, vat) |
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176 | if outfname != "-" : |
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177 | percent.oneMore() |
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178 | |
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179 | if number > firstnumber : |
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180 | self.endPDF(outfname) |
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181 | |
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182 | if outfname != "-" : |
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183 | percent.done() |
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184 | |
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185 | def main(self, arguments, options) : |
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186 | """Generate invoices.""" |
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187 | if not hasRL : |
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188 | raise PyKotaToolError, "The ReportLab module is missing. Download it from http://www.reportlab.org" |
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189 | if not hasPIL : |
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190 | raise PyKotaToolError, "The Python Imaging Library is missing. Download it from http://www.pythonware.com/downloads" |
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191 | |
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192 | self.adminOnly() |
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193 | |
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194 | self.pagesize = getPageSize(options.pagesize) |
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195 | |
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196 | extractonly = {} |
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197 | for filterexp in arguments : |
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198 | if filterexp.strip() : |
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199 | try : |
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200 | (filterkey, filtervalue) = [part.strip() for part in filterexp.split("=")] |
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201 | filterkey = filterkey.lower() |
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202 | if filterkey not in self.validfilterkeys : |
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203 | raise ValueError |
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204 | except ValueError : |
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205 | raise PyKotaCommandLineError, _("Invalid filter value [%s], see help.") % filterexp |
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206 | else : |
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207 | extractonly.update({ filterkey : filtervalue }) |
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208 | |
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209 | percent = Percent(self) |
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210 | outfname = options.output.strip().encode(sys.getfilesystemencoding()) |
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211 | if outfname != "-" : |
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212 | percent.display("%s..." % _("Extracting datas")) |
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213 | |
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214 | username = extractonly.get("username") |
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215 | if username : |
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216 | user = self.storage.getUser(username) |
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217 | else : |
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218 | user = None |
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219 | |
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220 | printername = extractonly.get("printername") |
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221 | if printername : |
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222 | printer = self.storage.getPrinter(printername) |
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223 | else : |
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224 | printer = None |
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225 | |
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226 | start = extractonly.get("start") |
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227 | end = extractonly.get("end") |
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228 | (start, end) = self.storage.cleanDates(start, end) |
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229 | |
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230 | jobs = self.storage.retrieveHistory(user=user, |
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231 | printer=printer, |
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232 | hostname=extractonly.get("hostname"), |
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233 | billingcode=extractonly.get("billingcode"), |
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234 | jobid=extractonly.get("jobid"), |
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235 | start=start, |
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236 | end=end, |
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237 | limit=0) |
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238 | |
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239 | peruser = {} |
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240 | nbjobs = 0 |
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241 | nbpages = 0 |
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242 | nbcredits = 0.0 |
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243 | percent.setSize(len(jobs)) |
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244 | if outfname != "-" : |
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245 | percent.display("\n") |
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246 | for job in jobs : |
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247 | if job.JobSize and (job.JobAction not in ("DENY", "CANCEL", "REFUND")) : |
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248 | nbpages += job.JobSize |
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249 | nbcredits += job.JobPrice |
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250 | counters = peruser.setdefault(job.UserName, { "nbjobs" : 0, "nbpages" : 0, "nbcredits" : 0.0 }) |
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251 | counters["nbpages"] += job.JobSize |
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252 | counters["nbcredits"] += job.JobPrice |
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253 | counters["nbjobs"] += 1 |
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254 | nbjobs += 1 |
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255 | if outfname != "-" : |
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256 | percent.oneMore() |
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257 | if outfname != "-" : |
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258 | percent.done() |
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259 | self.genInvoices(peruser, |
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260 | options.logo.strip().encode(sys.getfilesystemencoding()), |
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261 | outfname, |
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262 | options.number, |
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263 | options.unit or _("Credits"), |
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264 | options.vat) |
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265 | if outfname != "-" : |
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266 | nbusers = len(peruser) |
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267 | self.display("%s\n" % (_("Invoiced %(nbusers)i users for %(nbjobs)i jobs, %(nbpages)i pages and %(nbcredits).3f credits") \ |
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268 | % locals())) |
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269 | |
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270 | if __name__ == "__main__" : |
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271 | parser = PyKotaOptionParser(description=_("Invoice generator for PyKota."), |
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272 | usage="pkinvoice [options] [filterexpr]") |
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273 | parser.add_option("-l", "--logo", |
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274 | dest="logo", |
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275 | default=u"/usr/share/pykota/logos/pykota.jpeg", |
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276 | help=_("The image to use as a logo. The logo will be drawn at the center top of the page. The default logo is %default.")) |
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277 | parser.add_option("-p", "--pagesize", |
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278 | type="string", |
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279 | action="callback", |
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280 | callback=checkandset_pagesize, |
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281 | dest="pagesize", |
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282 | default=u"A4", |
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283 | help=_("Set the size of the page. Most well known page sizes are recognized, like 'A4' or 'Letter' to name a few. The default page size is %default.")) |
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284 | parser.add_option("-n", "--number", |
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285 | dest="number", |
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286 | type="int", |
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287 | action="callback", |
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288 | callback=checkandset_positiveint, |
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289 | default=1, |
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290 | help=_("Set the number of the first invoice. This number will automatically be incremented for each invoice. The default value is %default.")) |
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291 | parser.add_option("-o", "--output", |
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292 | dest="output", |
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293 | type="string", |
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294 | default=u"-", |
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295 | help=_("The name of the file to which the PDF invoices will be written. If not set or set to '%default', the PDF document will be sent to the standard output.")) |
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296 | |
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297 | # TODO : due to Python's optparse.py bug #1498146 fixed in rev 46861 |
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298 | # TODO : we can't use 'default=_("Credits")' for this option |
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299 | parser.add_option("-u", "--unit", |
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300 | dest="unit", |
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301 | type="string", |
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302 | help=_("The name of the unit to use on the invoices. The default value is 'Credits' or its locale translation.")) |
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303 | |
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304 | parser.add_option("-V", "--vat", |
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305 | dest="vat", |
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306 | type="float", |
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307 | action="callback", |
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308 | callback=checkandset_percent, |
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309 | default=0.0, |
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310 | help=_("The value in percent of the applicable VAT to be exposed. The default is %default, meaning no VAT.")) |
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311 | |
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312 | parser.add_filterexpression("username", _("User's name")) |
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313 | parser.add_filterexpression("printername", _("Printer's name")) |
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314 | parser.add_filterexpression("hostname", _("Host's name")) |
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315 | parser.add_filterexpression("jobid", _("Job's id")) |
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316 | parser.add_filterexpression("billingcode", _("Job's billing code")) |
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317 | parser.add_filterexpression("start", _("Job's date of printing")) |
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318 | parser.add_filterexpression("end", _("Job's date of printing")) |
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319 | |
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320 | parser.add_example('--unit EURO --output /tmp/invoices.pdf start=now-30', |
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321 | _("This would generate a PDF document containing invoices for all users who have spent some credits last month. Amounts would be in EURO and not VAT information would be included.")) |
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322 | |
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323 | run(parser, PKInvoice) |
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