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#!/usr/bin/python
# Copyright (C) 2013 Codethink Limited
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
''' A Morph configuration extension for removing gplv3 chunks from a system
Using a hard-coded list of chunks, it will read the system's /baserock metadata
to find the files created by that chunk, then remove them.
'''
import cliapp
import os
import json
class StripGPLv3ConfigureExtension(cliapp.Application):
gplv3_chunks = ['autoconf', 'bash', 'binutils', 'bison', 'ccache',
'gawk', 'gdbm', 'gettext', 'gperf', 'groff', 'm4',
'make', 'nano', 'texinfo-tarball']
def process_args(self, args):
target_root = args[0]
for chunk in self.gplv3_chunks:
self.remove_chunk(target_root, chunk)
def remove_chunk(self, target_root, chunk):
chunk_meta_path = os.path.join(target_root, 'baserock',
chunk + '.meta')
with open(chunk_meta_path, 'r') as f:
chunk_meta_data = json.load(f)
if not 'contents' in chunk_meta_data:
raise cliapp.AppError('Chunk %s does not have a "contents" list'
% chunk)
for content_entry in reversed(chunk_meta_data['contents']):
self.remove_content_entry(target_root, content_entry)
os.remove(chunk_meta_path)
def remove_content_entry(self, target_root, content_entry):
entry_path = os.path.join(target_root, './' + content_entry)
if not entry_path.startswith(target_root):
raise cliapp.AppException('%s is not in %s'
% (entry_path, target_root))
if os.path.exists(entry_path):
if os.path.islink(entry_path):
os.unlink(entry_path)
elif os.path.isfile(entry_path):
os.remove(entry_path)
elif os.path.isdir(entry_path):
if not os.listdir(entry_path):
os.rmdir(entry_path)
else:
raise cliapp.AppException('%s is not a link, file or directory'
% entry_path)
StripGPLv3ConfigureExtension().run()
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