1 # Copyright 2012 GRNET S.A. All rights reserved.
3 # Redistribution and use in source and binary forms, with or
4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
14 # provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 # documentation are those of the authors and should not be
31 # interpreted as representing official policies, either expressed
32 # or implied, of GRNET S.A.
34 """Normal Command-line interface output"""
36 from image_creator.output import Output
39 from colors import red, green, yellow
40 from progress.bar import Bar
43 def output(msg, new_line, decorate, stream):
44 nl = "\n" if new_line else ' '
45 stream.write(decorate(msg) + nl)
48 def error(msg, new_line, colored, stream):
49 color = red if colored else lambda x: x
50 output("Error: %s" % msg, new_line, color, stream)
53 def warn(msg, new_line, colored, stream):
54 color = yellow if colored else lambda x: x
55 output("Warning: %s" % msg, new_line, color, stream)
58 def success(msg, new_line, colored, stream):
59 color = green if colored else lambda x: x
60 output(msg, new_line, color, stream)
66 stream.write('\033[H\033[2J')
69 class SilentOutput(Output):
70 """Silent Output class. Only Errors are printed"""
74 class SimpleOutput(Output):
75 """Print messages but not progress bars. Progress bars are treated as
76 output messages. The user gets informed when the action begins and when it
77 ends, but no progress is shown in between."""
78 def __init__(self, colored=True, stream=None):
79 self.colored = colored
80 self.stream = sys.stderr if stream is None else stream
82 def error(self, msg, new_line=True):
84 error(msg, new_line, self.colored, self.stream)
86 def warn(self, msg, new_line=True):
88 warn(msg, new_line, self.colored, self.stream)
90 def success(self, msg, new_line=True):
91 """Print msg after an action is completed"""
92 success(msg, new_line, self.colored, self.stream)
94 def output(self, msg='', new_line=True):
95 """Print msg as normal program output"""
96 output(msg, new_line, lambda x: x, self.stream)
99 """Clear the screen"""
103 class OutputWthProgress(SimpleOutput):
104 """Output class with progress."""
105 class _Progress(Bar):
109 'default': '%(index)d/%(max)d',
110 'percent': '%(percent)d%%',
111 'b': '%(index)d/%(max)d B',
112 'kb': '%(index)d/%(max)d KB',
113 'mb': '%(index)d/%(max)d MB'
116 def __init__(self, size, title, bar_type='default'):
117 """Create a Progress bar"""
118 self.hide_cursor = False
119 super(OutputWthProgress._Progress, self).__init__()
122 self.bar_prefix = ' ['
123 self.bar_suffix = '] '
124 self.message = ("%s:" % self.title).ljust(self.MESSAGE_LENGTH)
125 self.suffix = self.template[bar_type]
128 # print empty progress bar
131 def success(self, result):
132 """Print result after progress has finished"""
133 self.output.output("\r%s ...\033[K" % self.title, False)
134 self.output.success(result)
136 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :