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#!/usr/bin/env python
# Copyright (c) 2018-2019, Ulf Magnusson
# SPDX-License-Identifier: ISC
"""
List all user-modifiable symbols that are not given a value in the configuration
file. Usually, these are new symbols that have been added to the Kconfig files.
The default configuration filename is '.config'. A different filename can be
passed in the KCONFIG_CONFIG environment variable.
"""
import sys
from kconfiglib import standard_kconfig, BOOL, TRISTATE, INT, HEX, STRING, \
TRI_TO_STR
def main():
kconf = standard_kconfig()
# Make it possible to filter this message out
sys.stderr.write(kconf.load_config() + "\n")
for sym in kconf.unique_defined_syms:
# Only show symbols that can be toggled. Choice symbols are a special
# case in that sym.assignable will be (2,) (length 1) for visible
# symbols in choices in y mode, but they can still be toggled by
# selecting some other symbol.
if sym.user_value is None and \
(len(sym.assignable) > 1 or
(sym.visibility and (sym.orig_type in (INT, HEX, STRING) or
sym.choice))):
# Don't reuse the 'config_string' format for bool/tristate symbols,
# to show n-valued symbols as 'CONFIG_FOO=n' instead of
# '# CONFIG_FOO is not set'. This matches the C tools.
if sym.orig_type in (BOOL, TRISTATE):
s = "{}{}={}\n".format(kconf.config_prefix, sym.name,
TRI_TO_STR[sym.tri_value])
else:
s = sym.config_string
sys.stdout.write(s)
if __name__ == "__main__":
main()
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