e247d59274
contrib/ChangeLog: * gcc-git-customization.sh: Use git-backport.py to drop all changes for ChangeLog files. * git-backport.py: New file.
61 lines
2.5 KiB
Python
Executable File
61 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (C) 2020 Free Software Foundation, Inc.
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#
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# This file is part of GCC.
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#
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# GCC is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# GCC is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GCC; see the file COPYING. If not, write to
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# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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# Boston, MA 02110-1301, USA.
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import argparse
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import subprocess
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description='Backport a git revision and '
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'stash all ChangeLog files.')
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parser.add_argument('revision', help='Revision')
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args = parser.parse_args()
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r = subprocess.run('git cherry-pick -x %s' % args.revision, shell=True)
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if r.returncode == 0:
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cmd = 'git show --name-only --pretty="" -- "*ChangeLog" |' \
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'xargs git checkout HEAD~'
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subprocess.check_output(cmd, shell=True)
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subprocess.check_output('git commit --amend --no-edit', shell=True)
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else:
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# 1) remove all ChangeLog files from conflicts
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out = subprocess.check_output('git diff --name-only --diff-filter=U',
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shell=True,
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encoding='utf8')
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conflicts = out.strip().split('\n')
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changelogs = [c for c in conflicts if c.endswith('ChangeLog')]
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if changelogs:
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cmd = 'git checkout --theirs %s' % '\n'.join(changelogs)
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subprocess.check_output(cmd, shell=True)
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# 2) remove all ChangeLog files from index
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cmd = 'git diff --name-only --diff-filter=M HEAD'
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out = subprocess.check_output(cmd, shell=True, encoding='utf8')
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out = out.strip().split('\n')
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modified = [c for c in out if c.endswith('ChangeLog')]
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for m in modified:
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subprocess.check_output('git reset %s' % m, shell=True)
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subprocess.check_output('git checkout %s' % m, shell=True)
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# try to continue
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if len(conflicts) == len(changelogs):
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subprocess.check_output('git cherry-pick --continue', shell=True)
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else:
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print('Please resolve all remaining file conflicts.')
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