93 lines
2.6 KiB
Python
93 lines
2.6 KiB
Python
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#!/usr/bin/env python3
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# Copyright (c) 2019, Ulf Magnusson
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# SPDX-License-Identifier: ISC
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"""
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Simple utility for setting configuration values from the command line.
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Sample usage:
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$ setconfig FOO_SUPPORT=y BAR_BITS=8
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Note: Symbol names should not be prefixed with 'CONFIG_'.
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The exit status on errors is 1.
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The default input/output configuration file is '.config'. A different filename
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can be passed in the KCONFIG_CONFIG environment variable.
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When overwriting a configuration file, the old version is saved to
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<filename>.old (e.g. .config.old).
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"""
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import argparse
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import sys
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import kconfiglib
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def main():
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parser = argparse.ArgumentParser(
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formatter_class=argparse.RawDescriptionHelpFormatter,
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description=__doc__)
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parser.add_argument(
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"--kconfig",
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default="Kconfig",
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help="Top-level Kconfig file (default: Kconfig)")
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parser.add_argument(
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"--no-check-exists",
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dest="check_exists",
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action="store_false",
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help="Ignore assignments to non-existent symbols instead of erroring "
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"out")
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parser.add_argument(
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"--no-check-value",
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dest="check_value",
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action="store_false",
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help="Ignore assignments that didn't \"take\" (where the symbol got a "
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"different value, e.g. due to unsatisfied dependencies) instead "
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"of erroring out")
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parser.add_argument(
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"assignments",
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metavar="ASSIGNMENT",
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nargs="*",
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help="A 'NAME=value' assignment")
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args = parser.parse_args()
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kconf = kconfiglib.Kconfig(args.kconfig, suppress_traceback=True)
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print(kconf.load_config())
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for arg in args.assignments:
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if "=" not in arg:
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sys.exit("error: no '=' in assignment: '{}'".format(arg))
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name, value = arg.split("=", 1)
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if name not in kconf.syms:
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if not args.check_exists:
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continue
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sys.exit("error: no symbol '{}' in configuration".format(name))
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sym = kconf.syms[name]
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if not sym.set_value(value):
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sys.exit("error: '{}' is an invalid value for the {} symbol {}"
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.format(value, kconfiglib.TYPE_TO_STR[sym.orig_type],
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name))
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if args.check_value and sym.str_value != value:
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sys.exit("error: {} was assigned the value '{}', but got the "
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"value '{}'. Check the symbol's dependencies, and make "
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"sure that it has a prompt."
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.format(name, value, sym.str_value))
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print(kconf.write_config())
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if __name__ == "__main__":
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main()
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