1 # -*- coding: utf-8 -*-
3 # Copyright 2012 GRNET S.A. All rights reserved.
5 # Redistribution and use in source and binary forms, with or
6 # without modification, are permitted provided that the following
9 # 1. Redistributions of source code must retain the above
10 # copyright notice, this list of conditions and the following
13 # 2. Redistributions in binary form must reproduce the above
14 # copyright notice, this list of conditions and the following
15 # disclaimer in the documentation and/or other materials
16 # provided with the distribution.
18 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
19 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
22 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
25 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 # POSSIBILITY OF SUCH DAMAGE.
31 # The views and conclusions contained in the software and
32 # documentation are those of the authors and should not be
33 # interpreted as representing official policies, either expressed
34 # or implied, of GRNET S.A.
36 """This package is intended to provide output classes for printing messages and
37 progress bars. The user can change the output behaviour of the program by
38 subclassing the Output class and assigning the derived one as the output class
39 of the various parts of the image-creator package.
44 """A class for printing program output"""
45 def error(self, msg, new_line=True):
49 def warn(self, msg, new_line=True):
53 def success(self, msg, new_line=True):
54 """Print msg after an action is completed"""
57 def output(self, msg='', new_line=True):
58 """Print normal program output"""
62 """Cleanup this output class"""
66 """Clear the screen"""
69 def _get_progress(self):
70 """Returns a new Progress object"""
71 progress = self._Progress
72 progress.output = self
75 Progress = property(_get_progress)
77 class _Progress(object):
78 """Internal progress bar class"""
79 def __init__(self, size, title, bar_type='default'):
81 self.bar_type = bar_type
82 self.output.output("%s ..." % title, False)
85 """Move progress to a specific position"""
89 """Move progress a step forward"""
92 def success(self, result):
93 """Print a msg after an action is completed successfully"""
94 self.output.success(result)
96 def progress_generator(self, message):
97 """A python generator for the progress bar class"""
99 progressbar = self.Progress(n, message)
105 progressbar.success('done')
109 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :