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Diffstat (limited to 'scripts/Kconfiglib/setconfig.py')
-rwxr-xr-x | scripts/Kconfiglib/setconfig.py | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/scripts/Kconfiglib/setconfig.py b/scripts/Kconfiglib/setconfig.py new file mode 100755 index 0000000..f9cf5cd --- /dev/null +++ b/scripts/Kconfiglib/setconfig.py @@ -0,0 +1,92 @@ +#!/usr/bin/env python3 + +# Copyright (c) 2019, Ulf Magnusson +# SPDX-License-Identifier: ISC + +""" +Simple utility for setting configuration values from the command line. + +Sample usage: + + $ setconfig FOO_SUPPORT=y BAR_BITS=8 + +Note: Symbol names should not be prefixed with 'CONFIG_'. + +The exit status on errors is 1. + +The default input/output configuration file is '.config'. A different filename +can be passed in the KCONFIG_CONFIG environment variable. + +When overwriting a configuration file, the old version is saved to +<filename>.old (e.g. .config.old). +""" +import argparse +import sys + +import kconfiglib + + +def main(): + parser = argparse.ArgumentParser( + formatter_class=argparse.RawDescriptionHelpFormatter, + description=__doc__) + + parser.add_argument( + "--kconfig", + default="Kconfig", + help="Top-level Kconfig file (default: Kconfig)") + + parser.add_argument( + "--no-check-exists", + dest="check_exists", + action="store_false", + help="Ignore assignments to non-existent symbols instead of erroring " + "out") + + parser.add_argument( + "--no-check-value", + dest="check_value", + action="store_false", + help="Ignore assignments that didn't \"take\" (where the symbol got a " + "different value, e.g. due to unsatisfied dependencies) instead " + "of erroring out") + + parser.add_argument( + "assignments", + metavar="ASSIGNMENT", + nargs="*", + help="A 'NAME=value' assignment") + + args = parser.parse_args() + + kconf = kconfiglib.Kconfig(args.kconfig, suppress_traceback=True) + print(kconf.load_config()) + + for arg in args.assignments: + if "=" not in arg: + sys.exit("error: no '=' in assignment: '{}'".format(arg)) + name, value = arg.split("=", 1) + + if name not in kconf.syms: + if not args.check_exists: + continue + sys.exit("error: no symbol '{}' in configuration".format(name)) + + sym = kconf.syms[name] + + if not sym.set_value(value): + sys.exit("error: '{}' is an invalid value for the {} symbol {}" + .format(value, kconfiglib.TYPE_TO_STR[sym.orig_type], + name)) + + if args.check_value and sym.str_value != value: + sys.exit("error: {} was assigned the value '{}', but got the " + "value '{}'. Check the symbol's dependencies, and make " + "sure that it has a prompt." + .format(name, value, sym.str_value)) + + print(kconf.write_config()) + + +if __name__ == "__main__": + main() |