89 lines
2.9 KiB
Python
Executable File
89 lines
2.9 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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from os import path, getcwd, makedirs, listdir, remove, rename
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from subprocess import run, DEVNULL
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from folder import folder
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parser = argparse.ArgumentParser(description='''
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Shrink a git changelog into a patchset (based on git format-patch)
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''')
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parser.add_argument('worktree', metavar='WORKTREE', action='store', type=lambda x: folder('worktree', x), help='Worktree (assumed in ../worktree/)')
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parser.add_argument('patchset', metavar='PATCHSET', action='store', type=lambda x: folder('patchset', x), help='Destination patchset (assumed in ../patchset/)')
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parser.add_argument('--raw', action='store_true', help='Do not neaten up commits')
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args = parser.parse_args()
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args.patchset = path.abspath(args.patchset)
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assert not path.exists(path.join(args.patchset, '.git')) # protect against argument swap
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assert path.exists(path.join(args.worktree, '.git'))
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makedirs(args.patchset, exist_ok=True)
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for do_delete in listdir(args.patchset):
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do_delete = path.join(args.patchset, do_delete)
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if path.splitext(do_delete)[1].lower() == '.patch':
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remove(do_delete)
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run(['git', 'format-patch', '-o', args.patchset, '--anchored=;', 'patchset-base'], stdout=DEVNULL, cwd=args.worktree, check=True)
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if args.raw: exit()
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# Edit the patches to look a bit better (and be more reproducible)
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patchnames = [x for x in sorted(listdir(args.patchset)) if path.splitext(x)[1].lower() == '.patch']
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strip_chars = min(len(x) - len(x.lstrip('0')) for x in patchnames)
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for do_edit in patchnames:
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real_file = path.join(args.patchset, do_edit)
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fake_file = path.join(args.patchset, do_edit + '~')
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new_file = path.join(args.patchset, do_edit[strip_chars:].lower())
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print(path.basename(new_file))
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rename(real_file, fake_file)
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with open(new_file, 'w') as o, open(fake_file, 'r') as i:
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for hdr_line in i:
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if hdr_line == '\n':
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o.write(hdr_line)
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break
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elif hdr_line.startswith('Subject:'):
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if '[' in hdr_line:
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o.write('Subject:' + hdr_line.rpartition(']')[2])
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else:
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o.write(hdr_line)
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elif hdr_line.startswith('From:'):
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o.write('From: Horst Beepmanh <>\n')
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for msg_line in i:
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o.write(msg_line)
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if msg_line == '---\n': break
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for junk_line in i:
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if junk_line == junk_line.lstrip():
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o.write(junk_line)
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break
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for diff_line in i:
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if diff_line.startswith('index'): # strip this hash line if possible
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next_line = next(i)
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if next_line.startswith('GIT binary patch'):
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o.write(diff_line)
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o.write(next_line)
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else:
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o.write(next_line)
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elif diff_line == '-- \n':
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break
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else:
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o.write(diff_line)
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remove(fake_file)
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