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#!/usr/bin/env python
# coding=utf-8
"""
A sample application for cmd2. Demonstrating colorized output.
Experiment with the command line options on the `speak` command to see how
different output colors ca
The allow_ansi setting has three possible values:
Never
poutput(), pfeedback(), and ppaged() strip all ANSI escape sequences
which instruct the terminal to colorize output
Terminal
(the default value) poutput(), pfeedback(), and ppaged() do not strip any
ANSI escape sequences when the output is a terminal, but if the output is
a pipe or a file the escape sequences are stripped. If you want colorized
output you must add ANSI escape sequences using either cmd2's internal ansi
module or another color library such as `plumbum.colors` or `colorama`.
Always
poutput(), pfeedback(), and ppaged() never strip ANSI escape sequences,
regardless of the output destination
"""
import argparse
import cmd2
from cmd2 import ansi
class CmdLineApp(cmd2.Cmd):
"""Example cmd2 application demonstrating colorized output."""
def __init__(self):
# Set use_ipython to True to enable the "ipy" command which embeds and interactive IPython shell
super().__init__(use_ipython=True)
self.maxrepeats = 3
# Make maxrepeats settable at runtime
self.settable['maxrepeats'] = 'max repetitions for speak command'
# Should ANSI color output be allowed
self.allow_ansi = ansi.ANSI_TERMINAL
speak_parser = argparse.ArgumentParser()
speak_parser.add_argument('-p', '--piglatin', action='store_true', help='atinLay')
speak_parser.add_argument('-s', '--shout', action='store_true', help='N00B EMULATION MODE')
speak_parser.add_argument('-r', '--repeat', type=int, help='output [n] times')
speak_parser.add_argument('-f', '--fg', choices=ansi.FG_COLORS, help='foreground color to apply to output')
speak_parser.add_argument('-b', '--bg', choices=ansi.BG_COLORS, help='background color to apply to output')
speak_parser.add_argument('-l', '--bold', action='store_true', help='bold the output')
speak_parser.add_argument('-u', '--underline', action='store_true', help='underline the output')
speak_parser.add_argument('words', nargs='+', help='words to say')
@cmd2.with_argparser(speak_parser)
def do_speak(self, args):
"""Repeats what you tell me to."""
words = []
for word in args.words:
if args.piglatin:
word = '%s%say' % (word[1:], word[0])
if args.shout:
word = word.upper()
words.append(word)
repetitions = args.repeat or 1
output_str = ansi.style(' '.join(words), fg=args.fg, bg=args.bg, bold=args.bold, underline=args.underline)
for i in range(min(repetitions, self.maxrepeats)):
# .poutput handles newlines, and accommodates output redirection too
self.poutput(output_str)
if __name__ == '__main__':
import sys
c = CmdLineApp()
sys.exit(c.cmdloop())
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