mirror of
https://github.com/KevinMidboe/python-gpiozero.git
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4725c6b68c
Ensure all error messages are printed on stderr instead of stdout; make sure all errors formatted the same and that argparse's default exit codes are followed
66 lines
2.0 KiB
Python
Executable File
66 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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pinout - gpiozero command-line pinout tool.
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Output Raspberry Pi GPIO pinout information.
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"""
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from __future__ import unicode_literals, absolute_import, print_function, division
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import argparse
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import sys
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from gpiozero import pi_info
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class PinoutTool(object):
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def __init__(self):
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self.parser = argparse.ArgumentParser(
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description=__doc__
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)
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self.parser.add_argument(
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'-r', '--revision',
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dest='revision',
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default='',
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help='RPi revision. Default is to autodetect revision of current device'
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)
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self.parser.add_argument(
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'-c', '--color',
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action="store_true",
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default=None,
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help='Force colored output (by default, the output will include ANSI'
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'color codes if run in a color-capable terminal). See also --monochrome'
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)
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self.parser.add_argument(
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'-m', '--monochrome',
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dest='color',
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action='store_false',
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help='Force monochrome output. See also --color'
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)
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def __call__(self, args=None):
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if args is None:
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args = sys.argv[1:]
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try:
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return self.main(self.parser.parse_args(args)) or 0
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except argparse.ArgumentError as e:
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# argparse errors are already nicely formatted, print to stderr and
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# exit with code 2
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raise e
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except Exception as e:
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# Output anything else nicely formatted on stderr and exit code 1
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self.parser.exit(1, '{prog}: error: {message}\n'.format(
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prog=self.parser.prog, message=e))
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def main(self, args):
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if args.revision == '':
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try:
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pi_info().pprint(color=args.color)
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except IOError:
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raise IOError('This device is not a Raspberry Pi')
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else:
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pi_info(args.revision).pprint(color=args.color)
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main = PinoutTool()
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