linux-imx

#!/usr/bin/python

# SPDX-License-Identifier: GPL-2.0

#

# diffconfig - a tool to compare .config files.

#

# originally written in 2006 by Matt Mackall

#  (at least, this was in his bloatwatch source code)

# last worked on 2008 by Tim Bird

#

​

import sys, os

​

def usage():

    print("""Usage: diffconfig [-h] [-m] [<config1> <config2>]

​

Diffconfig is a simple utility for comparing two .config files.

Using standard diff to compare .config files often includes extraneous and

distracting information.  This utility produces sorted output with only the

changes in configuration values between the two files.

​

Added and removed items are shown with a leading plus or minus, respectively.

Changed items show the old and new values on a single line.

​

If -m is specified, then output will be in "merge" style, which has the

changed and new values in kernel config option format.

​

If no config files are specified, .config and .config.old are used.

​

Example usage:

 $ diffconfig .config config-with-some-changes

-EXT2_FS_XATTR  n

 CRAMFS  n -> y

 EXT2_FS  y -> n

 LOG_BUF_SHIFT  14 -> 16

 PRINTK_TIME  n -> y

""")

    sys.exit(0)

​

# returns a dictionary of name/value pairs for config items in the file

def readconfig(config_file):

    d = {}

    for line in config_file:

        line = line[:-1]

        if line[:7] == "CONFIG_":

            name, val = line[7:].split("=", 1)

            d[name] = val

        if line[-11:] == " is not set":

            d[line[9:-11]] = "n"

    return d

​

def print_config(op, config, value, new_value):

    global merge_style

​

    if merge_style:

        if new_value:

            if new_value=="n":

                print("# CONFIG_%s is not set" % config)

            else:

                print("CONFIG_%s=%s" % (config, new_value))

    else:

        if op=="-":

            print("-%s %s" % (config, value))

        elif op=="+":