[3434] | 1 | # -*- coding: utf-8 -*-*- |
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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, 2004, 2005, 2006, 2007, 2008 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 3 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, see <http://www.gnu.org/licenses/>. |
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| 18 | # |
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| 19 | # $Id$ |
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| 20 | # |
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| 21 | # |
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| 22 | |
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| 23 | """This module defines classes to display progress reports.""" |
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| 24 | |
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| 25 | import sys |
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| 26 | import time |
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| 27 | |
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| 28 | class Percent : |
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| 29 | """A class to display progress.""" |
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| 30 | def __init__(self, app, size=None) : |
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| 31 | """Initializes the engine.""" |
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| 32 | self.isatty = sys.stdout.isatty() |
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| 33 | self.app = app |
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| 34 | self.size = None |
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| 35 | if size : |
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| 36 | self.setSize(size) |
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| 37 | self.previous = None |
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| 38 | self.before = time.time() |
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| 39 | |
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| 40 | def setSize(self, size) : |
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| 41 | """Sets the total size.""" |
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| 42 | self.number = 0 |
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| 43 | self.size = size |
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| 44 | if size : |
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| 45 | self.factor = 100.0 / float(size) |
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| 46 | |
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| 47 | def display(self, msg) : |
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| 48 | """Displays the value.""" |
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| 49 | if self.isatty : |
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| 50 | self.app.display(msg) |
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| 51 | sys.stdout.flush() |
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| 52 | |
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| 53 | def oneMore(self) : |
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| 54 | """Increments internal counter.""" |
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| 55 | if self.size : |
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| 56 | self.number += 1 |
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| 57 | percent = "%.02f" % (float(self.number) * self.factor) |
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| 58 | if percent != self.previous : # optimize for large number of items |
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| 59 | self.display("\r%s%%" % percent) |
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| 60 | self.previous = percent |
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| 61 | |
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| 62 | def done(self) : |
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| 63 | """Displays the 'done' message.""" |
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| 64 | after = time.time() |
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| 65 | if self.size : |
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| 66 | try : |
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| 67 | speed = self.size / ((after - self.before) + 0.00000000001) # adds an epsilon to avoid an user's problem I can't reproduce... |
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| 68 | except ZeroDivisionError : |
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| 69 | speed = 1 # Fake value in case of division by zero, shouldn't happen anyway with the epsilon above... |
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| 70 | self.display("\r100.00%%\r \r%s. %s : %.2f %s.\n" \ |
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| 71 | % (_("Done"), _("Average speed"), speed, _("entries per second"))) |
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| 72 | else : |
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| 73 | self.display("\r100.00%%\r \r%s.\n" % _("Done")) |
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