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#!/usr/bin/env python3
"""
This is a simple program that will insert some regular file into the root
commit(s) of history, e.g. adding a file named LICENSE or COPYING to the
first commit. It also rewrites commit hashes in commit messages to update
them based on these changes.
"""
"""
Please see the
***** API BACKWARD COMPATIBILITY CAVEAT *****
near the top of git-filter-repo.
"""
# Technically, this program could be replaced by a one-liner:
# git filter-repo --commit-callback "if not commit.parents: commit.file_changes.append(FileChange(b'M', $RELATIVE_TO_PROJECT_ROOT_PATHNAME, b'$(git hash-object -w $FILENAME)', b'100644'))"
# but let's do it as a full-fledged program that imports git_filter_repo
# anyway...
import argparse
import os
import subprocess
try:
import git_filter_repo as fr
except ImportError:
raise SystemExit("Error: Couldn't find git_filter_repo.py. Did you forget to make a symlink to git-filter-repo named git_filter_repo.py or did you forget to put the latter in your PYTHONPATH?")
parser = argparse.ArgumentParser(
description='Add a file to the root commit(s) of history')
parser.add_argument('--file', type=os.fsencode,
help=("Relative-path to file whose contents should be added to root commit(s)"))
args = parser.parse_args()
if not args.file:
raise SystemExit("Error: Need to specify the --file option")
if any([x == b"." or x== b".." for x in args.file.split(b"/")]):
raise SystemExit(f"Error: Invalid path components in {fr.decode(args.file)}")
if not os.path.isfile(args.file):
raise SystemExit(f"Error: {fr.decode(args.file)} not found")
fhash = subprocess.check_output(['git', 'hash-object', '-w', args.file]).strip()
fmode = b'100755' if os.access(args.file, os.X_OK) else b'100644'
# FIXME: I've assumed the file wasn't a directory or symlink...
def fixup_commits(commit, metadata):
if len(commit.parents) == 0:
commit.file_changes.append(fr.FileChange(b'M', args.file, fhash, fmode))
# FIXME: What if the history already had a file matching the given name,
# but which didn't exist until later in history? Is the intent for the
# user to keep the other version that existed when it existed, or to
# overwrite the version for all of history with the specified file? I
# don't know, but if it's the latter, we'd need to add an 'else' clause
# like the following:
#else:
# commit.file_changes = [x for x in commit.file_changes
# if x.filename != args.file]
fr_args = fr.FilteringOptions.parse_args(['--preserve-commit-encoding',
'--force',
'--replace-refs', 'update-no-add'])
filter = fr.RepoFilter(fr_args, commit_callback=fixup_commits)
filter.run()
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