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#! /usr/bin/python3
# SPDX-License-Identifier: GPL-2.0+
# Copyright 2019 Google LLC
#
"""
Script to remove boards
Usage:
rmboard.py <board_name>...
A single commit is created for each board removed.
Some boards may depend on files provided by another and this will cause
problems, generally the removal of files which should not be removed.
This script works by:
- Looking through the MAINTAINERS files which mention a board to find out
what files the board uses
- Looking through the Kconfig files which mention a board to find one that
needs to have material removed
Search for ## to update the commit message manually.
"""
import glob
import os
import re
import sys
from patman import command
def rm_kconfig_include(path):
"""Remove a path from Kconfig files
This function finds the given path in a 'source' statement in a Kconfig
file and removes that line from the file. This is needed because the path
is going to be removed, so any reference to it will cause a problem with
Kconfig parsing.
The changes are made locally and then added to the git staging area.
Args:
path: Path to search for and remove
"""
cmd = ['git', 'grep', path]
stdout = command.RunPipe([cmd], capture=True, raise_on_error=False).stdout
if not stdout:
return
fname = stdout.split(':')[0]
print("Fixing up '%s' to remove reference to '%s'" % (fname, path))
cmd = ['sed', '-i', '\|%s|d' % path, fname]
stdout = command.RunPipe([cmd], capture=True).stdout
cmd = ['git', 'add', fname]
stdout = command.RunPipe([cmd], capture=True).stdout
def rm_board(board):
"""Create a commit which removes a single board
This looks up the MAINTAINERS file to file files that need to be removed,
then removes pieces from the Kconfig files that mention the board.
Args:
board: Board name to remove
"""
# Find all MAINTAINERS and Kconfig files which mention the board
cmd = ['git', 'grep', '-l', board]
stdout = command.RunPipe([cmd], capture=True).stdout
maintain = []
kconfig = []
for line in stdout.splitlines():
line = line.strip()
if 'MAINTAINERS' in line:
if line not in maintain:
maintain.append(line)
elif 'Kconfig' in line:
kconfig.append(line)
paths = []
cc = []
# Look through the MAINTAINERS file to find things to remove
for fname in maintain:
with open(fname) as fd:
for line in fd:
line = line.strip()
fields = re.split('[ \t]', line, 1)
if len(fields) == 2:
if fields[0] == 'M:':
cc.append(fields[1])
elif fields[0] == 'F:':
paths.append(fields[1].strip())
# Expand any wildcards in the MAINTAINERS file
real = []
for path in paths:
if path[-1] == '/':
path = path[:-1]
if '*' in path:
globbed = glob.glob(path)
print("Expanded '%s' to '%s'" % (path, globbed))
real += globbed
else:
real.append(path)
# Search for Kconfig files in the resulting list. Remove any 'source' lines
# which reference Kconfig files we want to remove
for path in real:
cmd = ['find', path]
stdout = (command.RunPipe([cmd], capture=True, raise_on_error=False).
stdout)
for fname in stdout.splitlines():
if fname.endswith('Kconfig'):
rm_kconfig_include(fname)
# Remove unwanted files
cmd = ['git', 'rm', '-r'] + real
stdout = command.RunPipe([cmd], capture=True).stdout
## Change the messages as needed
msg = '''arm: Remove %s board
This board has not been converted to CONFIG_DM_MMC by the deadline.
Remove it.
''' % board
for name in cc:
msg += 'Patch-cc: %s\n' % name
# Create the commit
cmd = ['git', 'commit', '-s', '-m', msg]
stdout = command.RunPipe([cmd], capture=True).stdout
# Check if the board is mentioned anywhere else. The user will need to deal
# with this
cmd = ['git', 'grep', '-il', board]
print(command.RunPipe([cmd], capture=True, raise_on_error=False).stdout)
print(' '.join(cmd))
for board in sys.argv[1:]:
rm_board(board)
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