You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
246 lines
7.9 KiB
246 lines
7.9 KiB
#!/usr/bin/env python3
|
|
|
|
# Copyright (c) 2018-2019, Ulf Magnusson
|
|
# SPDX-License-Identifier: ISC
|
|
|
|
"""
|
|
Implements oldconfig functionality.
|
|
|
|
1. Loads existing .config
|
|
2. Prompts for the value of all modifiable symbols/choices that
|
|
aren't already set in the .config
|
|
3. Writes an updated .config
|
|
|
|
The default input/output filename 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).
|
|
|
|
Entering '?' displays the help text of the symbol/choice, if any.
|
|
|
|
Unlike 'make oldconfig', this script doesn't print menu titles and comments,
|
|
but gives Kconfig definition locations. Printing menus and comments would be
|
|
pretty easy to add: Look at the parents of each item, and print all menu
|
|
prompts and comments unless they have already been printed (assuming you want
|
|
to skip "irrelevant" menus).
|
|
"""
|
|
from __future__ import print_function
|
|
|
|
import sys
|
|
|
|
from kconfiglib import Symbol, Choice, BOOL, TRISTATE, HEX, standard_kconfig
|
|
|
|
|
|
# Python 2/3 compatibility hack
|
|
if sys.version_info[0] < 3:
|
|
input = raw_input
|
|
|
|
|
|
def _main():
|
|
# Earlier symbols in Kconfig files might depend on later symbols and become
|
|
# visible if their values change. This flag is set to True if the value of
|
|
# any symbol changes, in which case we rerun the oldconfig to check for new
|
|
# visible symbols.
|
|
global conf_changed
|
|
|
|
kconf = standard_kconfig(__doc__)
|
|
print(kconf.load_config())
|
|
|
|
while True:
|
|
conf_changed = False
|
|
|
|
for node in kconf.node_iter():
|
|
oldconfig(node)
|
|
|
|
if not conf_changed:
|
|
break
|
|
|
|
print(kconf.write_config())
|
|
|
|
|
|
def oldconfig(node):
|
|
"""
|
|
Prompts the user for a value if node.item is a visible symbol/choice with
|
|
no user value.
|
|
"""
|
|
# See main()
|
|
global conf_changed
|
|
|
|
# Only symbols and choices can be configured
|
|
if not isinstance(node.item, (Symbol, Choice)):
|
|
return
|
|
|
|
# Skip symbols and choices that aren't visible
|
|
if not node.item.visibility:
|
|
return
|
|
|
|
# Skip symbols and choices that don't have a prompt (at this location)
|
|
if not node.prompt:
|
|
return
|
|
|
|
if isinstance(node.item, Symbol):
|
|
sym = node.item
|
|
|
|
# Skip symbols that already have a user value
|
|
if sym.user_value is not None:
|
|
return
|
|
|
|
# Skip symbols that can only have a single value, due to selects
|
|
if len(sym.assignable) == 1:
|
|
return
|
|
|
|
# Skip symbols in choices in y mode. We ask once for the entire choice
|
|
# instead.
|
|
if sym.choice and sym.choice.tri_value == 2:
|
|
return
|
|
|
|
# Loop until the user enters a valid value or enters a blank string
|
|
# (for the default value)
|
|
while True:
|
|
val = input("{} ({}) [{}] ".format(
|
|
node.prompt[0], _name_and_loc_str(sym),
|
|
_default_value_str(sym)))
|
|
|
|
if val == "?":
|
|
_print_help(node)
|
|
continue
|
|
|
|
# Substitute a blank string with the default value the symbol
|
|
# would get
|
|
if not val:
|
|
val = sym.str_value
|
|
|
|
# Automatically add a "0x" prefix for hex symbols, like the
|
|
# menuconfig interface does. This isn't done when loading .config
|
|
# files, hence why set_value() doesn't do it automatically.
|
|
if sym.type == HEX and not val.startswith(("0x", "0x")):
|
|
val = "0x" + val
|
|
|
|
old_str_val = sym.str_value
|
|
|
|
# Kconfiglib itself will print a warning here if the value
|
|
# is invalid, so we don't need to bother
|
|
if sym.set_value(val):
|
|
# Valid value input. We're done with this node.
|
|
|
|
if sym.str_value != old_str_val:
|
|
conf_changed = True
|
|
|
|
return
|
|
|
|
else:
|
|
choice = node.item
|
|
|
|
# Skip choices that already have a visible user selection...
|
|
if choice.user_selection and choice.user_selection.visibility == 2:
|
|
# ...unless there are new visible symbols in the choice. (We know
|
|
# they have y (2) visibility in that case, because m-visible
|
|
# symbols get demoted to n-visibility in y-mode choices, and the
|
|
# user-selected symbol had visibility y.)
|
|
for sym in choice.syms:
|
|
if sym is not choice.user_selection and sym.visibility and \
|
|
sym.user_value is None:
|
|
# New visible symbols in the choice
|
|
break
|
|
else:
|
|
# No new visible symbols in the choice
|
|
return
|
|
|
|
# Get a list of available selections. The mode of the choice limits
|
|
# the visibility of the choice value symbols, so this will indirectly
|
|
# skip choices in n and m mode.
|
|
options = [sym for sym in choice.syms if sym.visibility == 2]
|
|
|
|
if not options:
|
|
# No y-visible choice value symbols
|
|
return
|
|
|
|
# Loop until the user enters a valid selection or a blank string (for
|
|
# the default selection)
|
|
while True:
|
|
print("{} ({})".format(node.prompt[0], _name_and_loc_str(choice)))
|
|
|
|
for i, sym in enumerate(options, 1):
|
|
print("{} {}. {} ({})".format(
|
|
">" if sym is choice.selection else " ",
|
|
i,
|
|
# Assume people don't define choice symbols with multiple
|
|
# prompts. That generates a warning anyway.
|
|
sym.nodes[0].prompt[0],
|
|
sym.name))
|
|
|
|
sel_index = input("choice[1-{}]: ".format(len(options)))
|
|
|
|
if sel_index == "?":
|
|
_print_help(node)
|
|
continue
|
|
|
|
# Pick the default selection if the string is blank
|
|
if not sel_index:
|
|
choice.selection.set_value(2)
|
|
break
|
|
|
|
try:
|
|
sel_index = int(sel_index)
|
|
except ValueError:
|
|
print("Bad index", file=sys.stderr)
|
|
continue
|
|
|
|
if not 1 <= sel_index <= len(options):
|
|
print("Bad index", file=sys.stderr)
|
|
continue
|
|
|
|
# Valid selection
|
|
|
|
if options[sel_index - 1].tri_value != 2:
|
|
conf_changed = True
|
|
|
|
options[sel_index - 1].set_value(2)
|
|
break
|
|
|
|
# Give all of the non-selected visible choice symbols the user value n.
|
|
# This makes it so that the choice is no longer considered new once we
|
|
# do additional passes, if the reason that it was considered new was
|
|
# that it had new visible choice symbols.
|
|
#
|
|
# Only giving visible choice symbols the user value n means we will
|
|
# prompt for the choice again if later user selections make more new
|
|
# choice symbols visible, which is correct.
|
|
for sym in choice.syms:
|
|
if sym is not choice.user_selection and sym.visibility:
|
|
sym.set_value(0)
|
|
|
|
|
|
def _name_and_loc_str(sc):
|
|
# Helper for printing the name of the symbol/choice 'sc' along with the
|
|
# location(s) in the Kconfig files where it is defined. Unnamed choices
|
|
# return "choice" instead of the name.
|
|
|
|
return "{}, defined at {}".format(
|
|
sc.name or "choice",
|
|
", ".join("{}:{}".format(node.filename, node.linenr)
|
|
for node in sc.nodes))
|
|
|
|
|
|
def _print_help(node):
|
|
print("\n" + (node.help or "No help text\n"))
|
|
|
|
|
|
def _default_value_str(sym):
|
|
# Returns the "m/M/y" string in e.g.
|
|
#
|
|
# TRISTATE_SYM prompt (TRISTATE_SYM, defined at Kconfig:9) [n/M/y]:
|
|
#
|
|
# For string/int/hex, returns the default value as-is.
|
|
|
|
if sym.type in (BOOL, TRISTATE):
|
|
return "/".join(("NMY" if sym.tri_value == tri else "nmy")[tri]
|
|
for tri in sym.assignable)
|
|
|
|
# string/int/hex
|
|
return sym.str_value
|
|
|
|
|
|
if __name__ == "__main__":
|
|
_main()
|
|
|