f835378bea
This changeset adds a maintainer script, create_patches.sh, that can be used to prepare for upstream from a git repository. The script can be used to generate patches in Mercurial or git format. The commit messages in the exported patches are all filtered, see upstream_msg_filter.sed, to ensure that irrelevant meta data isn't included in the upstream commit. Kudos to Curtis Dunham and Nikos Nikoleris for reviews and usability enhancements for earlier versions of this patch. Change-Id: Ia4cd089a32834b5e046ef58c0a173ca285b77bca Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
137 lines
4.3 KiB
Python
Executable file
137 lines
4.3 KiB
Python
Executable file
#!/usr/bin/env python
|
|
#
|
|
# This file originated from the moz-git-tools repo on GitHub
|
|
# (https://github.com/mozilla/moz-git-tools), which contains the
|
|
# following LICENSE notice:
|
|
#
|
|
# <quote>
|
|
# Except for git-new-workdir, which is covered under GPLv2, the code
|
|
# in this repository is placed into the public domain via CC0.
|
|
#
|
|
# http://creativecommons.org/publicdomain/zero/1.0/legalcode
|
|
# </quote>
|
|
|
|
r"""Git format-patch to hg importable patch.
|
|
|
|
(Who knew this was so complicated?)
|
|
|
|
>>> process(StringIO('From 3ce1ccc06 Mon Sep 17 00:00:00 2001\nFrom: fromuser\nSubject: subject\n\nRest of patch.\nMore patch.\n'))
|
|
'# HG changeset patch\n# User fromuser\n\nsubject\n\nRest of patch.\nMore patch.\n'
|
|
|
|
>>> process(StringIO('From: fromuser\nSubject: A very long subject line. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi faucibus, arcu sit amet\n\nRest of patch.\nMore patch.\n'))
|
|
'# HG changeset patch\n# User fromuser\n\nA very long subject line. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi faucibus, arcu sit amet\n\nRest of patch.\nMore patch.\n'
|
|
|
|
>>> process(StringIO('From: f\nSubject: =?UTF-8?q?Bug=20655877=20-=20Dont=20treat=20SVG=20text=20frames=20?= =?UTF-8?q?as=20being=20positioned.=20r=3D=3F?=\n\nPatch.'))
|
|
'# HG changeset patch\n# User f\n\nBug 655877 - Dont treat SVG text frames as being positioned. r=?\n\nPatch.'
|
|
"""
|
|
|
|
# Original author: bholley
|
|
|
|
import sys
|
|
import re
|
|
import fileinput
|
|
import email, email.parser, email.header, email.utils
|
|
import math
|
|
from cStringIO import StringIO
|
|
from itertools import takewhile
|
|
|
|
def decode_header(hdr_string):
|
|
r"""Clean up weird encoding crap.
|
|
|
|
>>> clean_header('[PATCH] =?UTF-8?q?Bug=20655877=20r=3D=3F?=')
|
|
'[PATCH] Bug 655877 r=?'
|
|
"""
|
|
rv = []
|
|
hdr = email.header.Header(hdr_string, maxlinelen=float('inf'))
|
|
for (part, encoding) in email.header.decode_header(hdr):
|
|
if encoding is None:
|
|
rv.append(part)
|
|
else:
|
|
rv.append(part.decode(encoding).encode('utf-8'))
|
|
return ' '.join(rv)
|
|
|
|
def clean_header(hdr_string):
|
|
r"""Transform a header split over many lines into a header split only where
|
|
linebreaks are intended. This is important because hg cares about the first
|
|
line of the commit message.
|
|
|
|
Also clean up weird encoding crap.
|
|
|
|
>>> clean_header('Foo\n bar\n baz')
|
|
'Foo bar baz'
|
|
>>> clean_header('Foo\n bar\nSpam\nEggs')
|
|
'Foo bar\nSpam\nEggs'
|
|
"""
|
|
|
|
lines = []
|
|
curline = ''
|
|
for line in decode_header(hdr_string).split('\n'):
|
|
if not line.startswith(' '):
|
|
lines.append(curline)
|
|
curline = ''
|
|
curline += line
|
|
lines.append(curline)
|
|
return '\n'.join(lines[1:])
|
|
|
|
def process(git_patch_file):
|
|
parser = email.parser.Parser()
|
|
msg = parser.parse(git_patch_file)
|
|
from_hdr = clean_header(msg['From'])
|
|
commit_title = clean_header(msg['subject'])
|
|
if not len(commit_title) or not len(from_hdr):
|
|
sys.stderr.write("%s does not look like a valid git patch file, skipping\n"
|
|
% git_patch_file.name)
|
|
return
|
|
|
|
parsed_from = email.utils.parseaddr(from_hdr)
|
|
nuke_prefix = r"\[PATCH( \d+/\d+)?\] "
|
|
match = re.match(nuke_prefix, commit_title)
|
|
if match:
|
|
commit_title = commit_title[match.end():]
|
|
|
|
patch_body = msg.get_payload()
|
|
|
|
# git format-patch wraps the diff (including trailing whitespace):
|
|
# ---
|
|
# <diff>
|
|
# --
|
|
# 2.0.3
|
|
# This doesn't hurt parsing the diff at all, but the version number is
|
|
# nonsense once the git specific items have been stripped
|
|
patch_body = re.sub(r'--\s?\n[0-9\.]+\n$', '', patch_body)
|
|
|
|
return '\n'.join(['# HG changeset patch',
|
|
'# User %s <%s>' % parsed_from,
|
|
'',
|
|
commit_title,
|
|
'',
|
|
patch_body])
|
|
|
|
if __name__ == "__main__":
|
|
if len(sys.argv) > 1 and sys.argv[1] == '--test':
|
|
import doctest
|
|
doctest.testmod()
|
|
sys.exit(0)
|
|
|
|
# If there were no arguments, do stdin->stdout.
|
|
filelist = sys.argv[1:]
|
|
if not filelist:
|
|
lines = process(sys.stdin)
|
|
sys.stdout.writelines(lines)
|
|
sys.exit(0)
|
|
|
|
# Otherwise, we take a list of files.
|
|
for filename in filelist:
|
|
|
|
# Read the lines.
|
|
f = open(filename, 'r')
|
|
lines = process(f)
|
|
f.close()
|
|
|
|
# Process.
|
|
|
|
if lines:
|
|
# Write them back to the same file.
|
|
f = open(filename, 'w')
|
|
f.writelines(lines)
|
|
f.close()
|