/usr/share/pyshared/ttystatus/status.py is in python-ttystatus 0.23-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | # Copyright 2010, 2011 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
import ttystatus
class TerminalStatus(object):
'''Show status and progress information on a terminal.
All output is provided via widgets of various kinds. Many widgets
format data that TerminalStatus stores. TerminalStatus provides a
dict interface for setting and retrieving data items. Unlike a real
dict, getting a value for a key that has not been set does not
result in a KeyError exception, but in the empty string being
returned.
'''
def __init__(self, output=None, period=None, messager=None):
self._m = messager or ttystatus.Messager(output=output, period=period)
self.clear()
def add(self, widget):
'''Add a new widget to the status display.'''
self._widgets.append(widget)
def format(self, format_string):
'''Add new widgets based on format string.
The format string is taken literally, except that ``%%`` is a
literal percent character, and ``%Foo(a,b,c)`` is a widget
of type ``Foo`` with parameters a, b, and c. For example:
``format("hello, %String(name)")``.
'''
for widget in ttystatus.fmt.parse(format_string):
self.add(widget)
def clear(self):
'''Remove all widgets.'''
self._widgets = []
self._values = dict()
self._m.clear()
def __getitem__(self, key):
'''Return value for key, or the empty string.'''
return self._values.get(key, '')
def get(self, key, default=None):
'''Like dict.get.'''
return self._values.get(key, default)
def __setitem__(self, key, value):
'''Set value for key.'''
self._values[key] = value
for w in self._widgets:
w.update(self)
if self._m.time_to_write():
self._write()
def flush(self):
'''Force an update of current state to the screen.
This happens even if it is not yet time to output the screen.
'''
self._write()
def _render(self):
'''Render current state of all widgets.'''
remaining = self._m.width
texts = [None] * len(self._widgets)
for i, w in enumerate(self._widgets):
if w.static_width:
texts[i] = w.render(0)
remaining -= len(texts[i])
for i, w in enumerate(self._widgets):
if not w.static_width:
texts[i] = w.render(remaining)
remaining -= len(texts[i])
return (''.join(texts))[:self._m.width]
def _write(self):
'''Render and output current state of all widgets.'''
self._m.write(self._render())
def increase(self, key, delta):
'''Increase value for a key by a given amount.'''
self[key] = (self[key] or 0) + delta
def notify(self, msg):
'''Show a message.'''
self._m.notify(msg, sys.stdout)
def error(self, msg):
'''Write an error message.'''
self._m.notify(msg, sys.stderr, force=True)
def finish(self):
'''Finish status display.'''
self._write()
self._m.finish()
def disable(self):
'''Disable all output.'''
self._m.disable()
def enable(self):
'''Enable output if it has been disabled.'''
self._m.enable()
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