112 lines
3.8 KiB
Python
Executable File
112 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2020 Red Hat, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from collections import namedtuple
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import contextlib
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import os
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import re
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import sys
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import click
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import download_gerrit_change
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root_dir = os.path.dirname(os.path.realpath(__file__))
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Migration = namedtuple('Migration', 'from_repo to_repo')
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def read_mapfile(mapfile):
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dirmaps = []
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with open(mapfile, 'r') as mapfile_fd:
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for line_buffer in mapfile_fd.readlines():
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# ignore empty lines and anything after #
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line_match = re.search("^([^#]+)", line_buffer.strip())
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if not line_match:
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continue
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line_buffer = line_match.group(1)
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# look for tuple of 2 elements
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line_match = re.search(r"^([^\s]+)\s+(.+)", line_buffer.strip())
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if not line_match:
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continue
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ovn_match, neutron_match = line_match.group(1), line_match.group(2)
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dirmaps.append(Migration(neutron_match, ovn_match))
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return dirmaps
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def parse_input(dirmaps, patch_content, output_fd):
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for line_buffer in patch_content.splitlines():
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# locate markers in patch file for filenames and see if they need
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# to me renamed based on dirmaps
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filename_replaced = False
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line_match = re.search(r"^\s*---\s+([^\s@]+)[\s@]*", line_buffer)
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if not line_match:
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line_match = re.search(r"^\s*\+\+\+\s+([^\s@]+)[\s@]*",
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line_buffer)
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if line_match:
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for old, new in dirmaps:
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new_line_buffer = line_buffer.replace(old, new)
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if new_line_buffer != line_buffer:
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filename_replaced = True
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output_fd.write("{}\n".format(new_line_buffer))
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break
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if not filename_replaced:
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output_fd.write("{}\n".format(line_buffer))
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@contextlib.contextmanager
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def open_output(filename=None):
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if filename and filename != '-':
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fh = open(filename, 'w')
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else:
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fh = sys.stdout
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try:
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yield fh
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finally:
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if fh is not sys.stdout:
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fh.close()
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@click.command()
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@click.option('-i', '--input_patch', prompt='Input patch file or gerrit id',
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help='input_patch patch file or gerrit change')
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@click.option('-o', '--output_patch', default='-',
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help='Output patch file. Default: stdout')
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@click.option('-m', '--mapfile',
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default=os.path.join(root_dir, 'migrate_names.txt'),
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show_default=True,
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type=click.Path(),
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help='Data file that specifies mapping to be applied to input')
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@click.option('--reverse/--no-reverse',
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default=False,
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help='Map filenames from networking-ovn to Neutron repo')
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def cli(input_patch, output_patch, mapfile, reverse):
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dirmaps = read_mapfile(mapfile)
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if reverse:
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dirmaps = [Migration(two, one) for one, two in dirmaps]
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if os.path.isfile(input_patch):
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with open(input_patch, 'r') as input_fd:
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patch_content = ''.join(input_fd.readlines())
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else:
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patch_content = download_gerrit_change.fetch(input_patch)
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with open_output(output_patch) as output_fd:
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parse_input(dirmaps, patch_content, output_fd)
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if __name__ == '__main__':
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cli()
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