mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
1392978da7
Summary: Correctly handle files ignored by svn (such as .o files, which are ignored by default) by adding "--no-ignore" flag to "svn status" and "svn add". Differential Revision: https://reviews.llvm.org/D41404 llvm-svn: 321388
367 lines
12 KiB
Python
Executable File
367 lines
12 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
# ======- git-llvm - LLVM Git Help Integration ---------*- python -*--========#
|
|
#
|
|
# The LLVM Compiler Infrastructure
|
|
#
|
|
# This file is distributed under the University of Illinois Open Source
|
|
# License. See LICENSE.TXT for details.
|
|
#
|
|
# ==------------------------------------------------------------------------==#
|
|
|
|
"""
|
|
git-llvm integration
|
|
====================
|
|
|
|
This file provides integration for git.
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
import argparse
|
|
import collections
|
|
import contextlib
|
|
import errno
|
|
import os
|
|
import re
|
|
import subprocess
|
|
import sys
|
|
import tempfile
|
|
import time
|
|
assert sys.version_info >= (2, 7)
|
|
|
|
|
|
# It's *almost* a straightforward mapping from the monorepo to svn...
|
|
GIT_TO_SVN_DIR = {
|
|
d: (d + '/trunk')
|
|
for d in [
|
|
'clang-tools-extra',
|
|
'compiler-rt',
|
|
'debuginfo-tests',
|
|
'dragonegg',
|
|
'klee',
|
|
'libclc',
|
|
'libcxx',
|
|
'libcxxabi',
|
|
'libunwind',
|
|
'lld',
|
|
'lldb',
|
|
'llgo',
|
|
'llvm',
|
|
'openmp',
|
|
'parallel-libs',
|
|
'polly',
|
|
]
|
|
}
|
|
GIT_TO_SVN_DIR.update({'clang': 'cfe/trunk'})
|
|
|
|
VERBOSE = False
|
|
QUIET = False
|
|
dev_null_fd = None
|
|
|
|
|
|
def eprint(*args, **kwargs):
|
|
print(*args, file=sys.stderr, **kwargs)
|
|
|
|
|
|
def log(*args, **kwargs):
|
|
if QUIET:
|
|
return
|
|
print(*args, **kwargs)
|
|
|
|
|
|
def log_verbose(*args, **kwargs):
|
|
if not VERBOSE:
|
|
return
|
|
print(*args, **kwargs)
|
|
|
|
|
|
def die(msg):
|
|
eprint(msg)
|
|
sys.exit(1)
|
|
|
|
|
|
def first_dirname(d):
|
|
while True:
|
|
(head, tail) = os.path.split(d)
|
|
if not head or head == '/':
|
|
return tail
|
|
d = head
|
|
|
|
|
|
def get_dev_null():
|
|
"""Lazily create a /dev/null fd for use in shell()"""
|
|
global dev_null_fd
|
|
if dev_null_fd is None:
|
|
dev_null_fd = open(os.devnull, 'w')
|
|
return dev_null_fd
|
|
|
|
|
|
def shell(cmd, strip=True, cwd=None, stdin=None, die_on_failure=True,
|
|
ignore_errors=False):
|
|
log_verbose('Running: %s' % ' '.join(cmd))
|
|
|
|
err_pipe = subprocess.PIPE
|
|
if ignore_errors:
|
|
# Silence errors if requested.
|
|
err_pipe = get_dev_null()
|
|
|
|
start = time.time()
|
|
p = subprocess.Popen(cmd, cwd=cwd, stdout=subprocess.PIPE, stderr=err_pipe,
|
|
stdin=subprocess.PIPE, universal_newlines=True)
|
|
stdout, stderr = p.communicate(input=stdin)
|
|
elapsed = time.time() - start
|
|
|
|
log_verbose('Command took %0.1fs' % elapsed)
|
|
|
|
if p.returncode == 0 or ignore_errors:
|
|
if stderr and not ignore_errors:
|
|
eprint('`%s` printed to stderr:' % ' '.join(cmd))
|
|
eprint(stderr.rstrip())
|
|
if strip:
|
|
stdout = stdout.rstrip('\r\n')
|
|
return stdout
|
|
err_msg = '`%s` returned %s' % (' '.join(cmd), p.returncode)
|
|
eprint(err_msg)
|
|
if stderr:
|
|
eprint(stderr.rstrip())
|
|
if die_on_failure:
|
|
sys.exit(2)
|
|
raise RuntimeError(err_msg)
|
|
|
|
|
|
def git(*cmd, **kwargs):
|
|
return shell(['git'] + list(cmd), kwargs.get('strip', True))
|
|
|
|
|
|
def svn(cwd, *cmd, **kwargs):
|
|
# TODO: Better way to do default arg when we have *cmd?
|
|
return shell(['svn'] + list(cmd), cwd=cwd, stdin=kwargs.get('stdin', None),
|
|
ignore_errors=kwargs.get('ignore_errors', None))
|
|
|
|
def program_exists(cmd):
|
|
if sys.platform == 'win32' and not cmd.endswith('.exe'):
|
|
cmd += '.exe'
|
|
for path in os.environ["PATH"].split(os.pathsep):
|
|
if os.access(os.path.join(path, cmd), os.X_OK):
|
|
return True
|
|
return False
|
|
|
|
def get_default_rev_range():
|
|
# Get the branch tracked by the current branch, as set by
|
|
# git branch --set-upstream-to See http://serverfault.com/a/352236/38694.
|
|
cur_branch = git('rev-parse', '--symbolic-full-name', 'HEAD')
|
|
upstream_branch = git('for-each-ref', '--format=%(upstream:short)',
|
|
cur_branch)
|
|
if not upstream_branch:
|
|
upstream_branch = 'origin/master'
|
|
|
|
# Get the newest common ancestor between HEAD and our upstream branch.
|
|
upstream_rev = git('merge-base', 'HEAD', upstream_branch)
|
|
return '%s..' % upstream_rev
|
|
|
|
|
|
def get_revs_to_push(rev_range):
|
|
if not rev_range:
|
|
rev_range = get_default_rev_range()
|
|
# Use git show rather than some plumbing command to figure out which revs
|
|
# are in rev_range because it handles single revs (HEAD^) and ranges
|
|
# (foo..bar) like we want.
|
|
revs = git('show', '--reverse', '--quiet',
|
|
'--pretty=%h', rev_range).splitlines()
|
|
if not revs:
|
|
die('Nothing to push: No revs in range %s.' % rev_range)
|
|
return revs
|
|
|
|
|
|
def clean_and_update_svn(svn_repo):
|
|
svn(svn_repo, 'revert', '-R', '.')
|
|
|
|
# Unfortunately it appears there's no svn equivalent for git clean, so we
|
|
# have to do it ourselves.
|
|
for line in svn(svn_repo, 'status', '--no-ignore').split('\n'):
|
|
if not line.startswith('?'):
|
|
continue
|
|
filename = line[1:].strip()
|
|
os.remove(os.path.join(svn_repo, filename))
|
|
|
|
svn(svn_repo, 'update', *list(GIT_TO_SVN_DIR.values()))
|
|
|
|
|
|
def svn_init(svn_root):
|
|
if not os.path.exists(svn_root):
|
|
log('Creating svn staging directory: (%s)' % (svn_root))
|
|
os.makedirs(svn_root)
|
|
log('This is a one-time initialization, please be patient for a few'
|
|
' minutes...')
|
|
svn(svn_root, 'checkout', '--depth=immediates',
|
|
'https://llvm.org/svn/llvm-project/', '.')
|
|
svn(svn_root, 'update', *list(GIT_TO_SVN_DIR.values()))
|
|
log("svn staging area ready in '%s'" % svn_root)
|
|
if not os.path.isdir(svn_root):
|
|
die("Can't initialize svn staging dir (%s)" % svn_root)
|
|
|
|
|
|
def fix_eol_style_native(rev, sr, svn_sr_path):
|
|
"""Fix line endings before applying patches with Unix endings
|
|
|
|
SVN on Windows will check out files with CRLF for files with the
|
|
svn:eol-style property set to "native". This breaks `git apply`, which
|
|
typically works with Unix-line ending patches. Work around the problem here
|
|
by doing a dos2unix up front for files with svn:eol-style set to "native".
|
|
SVN will not commit a mass line ending re-doing because it detects the line
|
|
ending format for files with this property.
|
|
"""
|
|
files = git('diff-tree', '--no-commit-id', '--name-only', '-r', rev, '--',
|
|
sr).split('\n')
|
|
files = [f.split('/', 1)[1] for f in files]
|
|
# Skip files that don't exist in SVN yet.
|
|
files = [f for f in files if os.path.exists(os.path.join(svn_sr_path, f))]
|
|
# Use ignore_errors because 'svn propget' prints errors if the file doesn't
|
|
# have the named property. There doesn't seem to be a way to suppress that.
|
|
eol_props = svn(svn_sr_path, 'propget', 'svn:eol-style', *files,
|
|
ignore_errors=True)
|
|
crlf_files = []
|
|
if len(files) == 1:
|
|
# No need to split propget output on ' - ' when we have one file.
|
|
if eol_props.strip() == 'native':
|
|
crlf_files = files
|
|
else:
|
|
for eol_prop in eol_props.split('\n'):
|
|
# Remove spare CR.
|
|
eol_prop = eol_prop.strip('\r')
|
|
if not eol_prop:
|
|
continue
|
|
prop_parts = eol_prop.rsplit(' - ', 1)
|
|
if len(prop_parts) != 2:
|
|
eprint("unable to parse svn propget line:")
|
|
eprint(eol_prop)
|
|
continue
|
|
(f, eol_style) = prop_parts
|
|
if eol_style == 'native':
|
|
crlf_files.append(f)
|
|
# Reformat all files with native SVN line endings to Unix format. SVN knows
|
|
# files with native line endings are text files. It will commit just the
|
|
# diff, and not a mass line ending change.
|
|
shell(['dos2unix', '-q'] + crlf_files, cwd=svn_sr_path)
|
|
|
|
|
|
def svn_push_one_rev(svn_repo, rev, dry_run):
|
|
files = git('diff-tree', '--no-commit-id', '--name-only', '-r',
|
|
rev).split('\n')
|
|
subrepos = {first_dirname(f) for f in files}
|
|
if not subrepos:
|
|
raise RuntimeError('Empty diff for rev %s?' % rev)
|
|
|
|
status = svn(svn_repo, 'status', '--no-ignore')
|
|
if status:
|
|
die("Can't push git rev %s because svn status is not empty:\n%s" %
|
|
(rev, status))
|
|
|
|
for sr in subrepos:
|
|
svn_sr_path = os.path.join(svn_repo, GIT_TO_SVN_DIR[sr])
|
|
if os.name == 'nt':
|
|
fix_eol_style_native(rev, sr, svn_sr_path)
|
|
diff = git('show', '--binary', rev, '--', sr, strip=False)
|
|
# git is the only thing that can handle its own patches...
|
|
log_verbose('Apply patch: %s' % diff)
|
|
try:
|
|
shell(['git', 'apply', '-p2', '-'], cwd=svn_sr_path, stdin=diff,
|
|
die_on_failure=False)
|
|
except RuntimeError as e:
|
|
eprint("Patch doesn't apply: maybe you should try `git pull -r` "
|
|
"first?")
|
|
sys.exit(2)
|
|
|
|
status_lines = svn(svn_repo, 'status', '--no-ignore').split('\n')
|
|
|
|
for l in (l for l in status_lines if (l.startswith('?') or
|
|
l.startswith('I'))):
|
|
svn(svn_repo, 'add', '--no-ignore', l[1:].strip())
|
|
for l in (l for l in status_lines if l.startswith('!')):
|
|
svn(svn_repo, 'remove', l[1:].strip())
|
|
|
|
# Now we're ready to commit.
|
|
commit_msg = git('show', '--pretty=%B', '--quiet', rev)
|
|
if not dry_run:
|
|
log(svn(svn_repo, 'commit', '-m', commit_msg, '--force-interactive'))
|
|
log('Committed %s to svn.' % rev)
|
|
else:
|
|
log("Would have committed %s to svn, if this weren't a dry run." % rev)
|
|
|
|
|
|
def cmd_push(args):
|
|
'''Push changes back to SVN: this is extracted from Justin Lebar's script
|
|
available here: https://github.com/jlebar/llvm-repo-tools/
|
|
|
|
Note: a current limitation is that git does not track file rename, so they
|
|
will show up in SVN as delete+add.
|
|
'''
|
|
# Get the git root
|
|
git_root = git('rev-parse', '--show-toplevel')
|
|
if not os.path.isdir(git_root):
|
|
die("Can't find git root dir")
|
|
|
|
# Push from the root of the git repo
|
|
os.chdir(git_root)
|
|
|
|
# We need a staging area for SVN, let's hide it in the .git directory.
|
|
dot_git_dir = git('rev-parse', '--git-common-dir')
|
|
svn_root = os.path.join(dot_git_dir, 'llvm-upstream-svn')
|
|
svn_init(svn_root)
|
|
|
|
rev_range = args.rev_range
|
|
dry_run = args.dry_run
|
|
revs = get_revs_to_push(rev_range)
|
|
log('Pushing %d commit%s:\n%s' %
|
|
(len(revs), 's' if len(revs) != 1
|
|
else '', '\n'.join(' ' + git('show', '--oneline', '--quiet', c)
|
|
for c in revs)))
|
|
for r in revs:
|
|
clean_and_update_svn(svn_root)
|
|
svn_push_one_rev(svn_root, r, dry_run)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
if not program_exists('svn'):
|
|
die('error: git-llvm needs svn command, but svn is not installed.')
|
|
|
|
argv = sys.argv[1:]
|
|
p = argparse.ArgumentParser(
|
|
prog='git llvm', formatter_class=argparse.RawDescriptionHelpFormatter,
|
|
description=__doc__)
|
|
subcommands = p.add_subparsers(title='subcommands',
|
|
description='valid subcommands',
|
|
help='additional help')
|
|
verbosity_group = p.add_mutually_exclusive_group()
|
|
verbosity_group.add_argument('-q', '--quiet', action='store_true',
|
|
help='print less information')
|
|
verbosity_group.add_argument('-v', '--verbose', action='store_true',
|
|
help='print more information')
|
|
|
|
parser_push = subcommands.add_parser(
|
|
'push', description=cmd_push.__doc__,
|
|
help='push changes back to the LLVM SVN repository')
|
|
parser_push.add_argument(
|
|
'-n',
|
|
'--dry-run',
|
|
dest='dry_run',
|
|
action='store_true',
|
|
help='Do everything other than commit to svn. Leaves junk in the svn '
|
|
'repo, so probably will not work well if you try to commit more '
|
|
'than one rev.')
|
|
parser_push.add_argument(
|
|
'rev_range',
|
|
metavar='GIT_REVS',
|
|
type=str,
|
|
nargs='?',
|
|
help="revs to push (default: everything not in the branch's "
|
|
'upstream, or not in origin/master if the branch lacks '
|
|
'an explicit upstream)')
|
|
parser_push.set_defaults(func=cmd_push)
|
|
args = p.parse_args(argv)
|
|
VERBOSE = args.verbose
|
|
QUIET = args.quiet
|
|
|
|
# Dispatch to the right subcommand
|
|
args.func(args)
|