File indexing completed on 2024-05-12 17:07:15

 #!/usr/bin/env python3
 #
 #  SPDX-FileCopyrightText: 2021 Carson Black <uhhadd@gmail.com>
 #
 #  SPDX-License-Identifier: LGPL-2.0-or-later
 #
 
 # 5.21.0 botched the migration by accidentally turning enabled to disabled and disabled to enabled.
 # We have two choices here: we can either break key repeat for users that manually intervened
 # and enabled key repeat by inverting the value, or we can enable key repeat for users that didn't
 # have it enabled and fix users that had their key repeat disabled. Only one of those sentences
 # contains the word "break" so we go with the one without the word "break" ;)
 # Enabling key repeat for users who disabled it is less breaking than disabling key repeat for
 # users who enabled it.
 
 #
 # And that brings us to the code.
 #
 # We'll need to import sys in order to read stdin, which is how we receive
 # the old input file to look for it.
 #
 import sys
 
 #
 # After that, we'll need to declare ourselves a variable to hold the contents
 # of the config file we read in from stdin.
 #
 
 content: str = sys.stdin.read()
 
 #
 # That brings us to checking for the presence of the old script's effects on the underlying system:
 # kconfig files are annotated with a section containing all of the config scripts that have ran
 # on them.
 #
 # They're of the form filename.upd:migration_name.
 #
 if "kcminputrc_repeat.upd:kcminputrc_migrate_repeat_value" in content:
     #
     # Now we check for the presence of a disabled key repeat in the config file contents. For 5.21.0, this
     # was changed from a 0-1-2 ternary to an English-language nothing/repeat/accent.
     # The config script for migrating ternary to English-language is why we're in this
     # mess in the first place. We migrated 0 (enabled) -> nothing and 2 (disabled) -> repeat.
     #
     if "KeyRepeat=nothing" in content:
         #
         # Now we print the command instructing the kconfig updater to delete this field.
         # A deleted field essentially means "use the default" which in this case means
         # "enable key repeat." We delete instead of reassigning to "repeat" because
         # we would prefer to have a deleted field act as our "default" value.
         #
         print("# DELETE [Keyboard]KeyRepeat")
 
     #
     # Since we created the Tmp group as a temporary way of conveying to this script what migrations
     # were applied to the config file, we want to clean it up, as it serves no other purpose.
     #
     # We instruct KConfig to delete the Tmp group in the config file.
     #
     print("# DELETEGROUP Tmp")