blob: 91270415fc50e488449a70162e34675680c24b31 [file] [log] [blame]
#!/usr/bin/env python
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
# Copyright 2011 Intel Corporation
# Authored-by: Yu Ke <>
# Paul Eggleton <>
# Richard Purdie <>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import fnmatch
import os, sys
import optparse
import logging
import subprocess
import tempfile
import ConfigParser
import re
from collections import OrderedDict
from string import Template
__version__ = "0.2.1"
def logger_create():
logger = logging.getLogger("")
loggerhandler = logging.StreamHandler()
loggerhandler.setFormatter(logging.Formatter("[%(asctime)s] %(message)s","%H:%M:%S"))
return logger
logger = logger_create()
def get_current_branch(repodir=None):
if not os.path.exists(os.path.join(repodir if repodir else '', ".git")):
# Repo not created yet (i.e. during init) so just assume master
return "master"
branchname = runcmd("git symbolic-ref HEAD 2>/dev/null", repodir).strip()
if branchname.startswith("refs/heads/"):
branchname = branchname[11:]
return branchname
except subprocess.CalledProcessError:
return ""
class Configuration(object):
Manages the configuration
For an example config file, see combo-layer.conf.example
def __init__(self, options):
for key, val in options.__dict__.items():
setattr(self, key, val)
def readsection(parser, section, repo):
for (name, value) in parser.items(section):
if value.startswith("@"):
self.repos[repo][name] = eval(value.strip("@"))
# Apply special type transformations for some properties.
# Type matches the RawConfigParser.get*() methods.
types = {'signoff': 'boolean', 'update': 'boolean'}
if name in types:
value = getattr(parser, 'get' + types[name])(section, name)
self.repos[repo][name] = value
def readglobalsection(parser, section):
for (name, value) in parser.items(section):
if name == "commit_msg":
self.commit_msg_template = value
logger.debug("Loading config file %s" % self.conffile)
self.parser = ConfigParser.ConfigParser()
with open(self.conffile) as f:
# initialize default values
self.commit_msg_template = "Automatic commit to update last_revision"
self.repos = {}
for repo in self.parser.sections():
if repo == "combo-layer-settings":
# special handling for global settings
readglobalsection(self.parser, repo)
self.repos[repo] = {}
readsection(self.parser, repo, repo)
# Load local configuration, if available
self.localconffile = None
self.localparser = None
self.combobranch = None
if self.conffile.endswith('.conf'):
lcfile = self.conffile.replace('.conf', '-local.conf')
if os.path.exists(lcfile):
# Read combo layer branch
self.combobranch = get_current_branch()
logger.debug("Combo layer branch is %s" % self.combobranch)
self.localconffile = lcfile
logger.debug("Loading local config file %s" % self.localconffile)
self.localparser = ConfigParser.ConfigParser()
with open(self.localconffile) as f:
for section in self.localparser.sections():
if '|' in section:
sectionvals = section.split('|')
repo = sectionvals[0]
if sectionvals[1] != self.combobranch:
repo = section
if repo in self.repos:
readsection(self.localparser, section, repo)
def update(self, repo, option, value, initmode=False):
# If the main config has the option already, that is what we
# are expected to modify.
if self.localparser and not self.parser.has_option(repo, option):
parser = self.localparser
section = "%s|%s" % (repo, self.combobranch)
conffile = self.localconffile
if initmode and not parser.has_section(section):
parser = self.parser
section = repo
conffile = self.conffile
parser.set(section, option, value)
with open(conffile, "w") as f:
self.repos[repo][option] = value
def sanity_check(self, initmode=False):
required_options=["src_uri", "local_repo_dir", "dest_dir", "last_revision"]
if initmode:
msg = ""
missing_options = []
for name in self.repos:
for option in required_options:
if option not in self.repos[name]:
msg = "%s\nOption %s is not defined for component %s" %(msg, option, name)
# Sanitize dest_dir so that we do not have to deal with edge cases
# (unset, empty string, double slashes) in the rest of the code.
# It not being set will still be flagged as error because it is
# listed as required option above; that could be changed now.
dest_dir = os.path.normpath(self.repos[name].get("dest_dir", "."))
self.repos[name]["dest_dir"] = "." if not dest_dir else dest_dir
if msg != "":
logger.error("configuration file %s has the following error: %s" % (self.conffile,msg))
if self.localconffile and 'last_revision' in missing_options:
logger.error("local configuration file %s may be missing configuration for combo branch %s" % (self.localconffile, self.combobranch))
# filterdiff is required by action_splitpatch, so check its availability
if"which filterdiff > /dev/null 2>&1", shell=True) != 0:
logger.error("ERROR: patchutils package is missing, please install it (e.g. # apt-get install patchutils)")
def runcmd(cmd,destdir=None,printerr=True,out=None):
execute command, raise CalledProcessError if fail
return output if succeed
logger.debug("run cmd '%s' in %s" % (cmd, os.getcwd() if destdir is None else destdir))
if not out:
out = os.tmpfile()
err = out
err = os.tmpfile()
subprocess.check_call(cmd, stdout=out, stderr=err, cwd=destdir, shell=isinstance(cmd, str))
except subprocess.CalledProcessError,e:
if printerr:
logger.error("%s" %
raise e
output =
logger.debug("output: %s" % output )
return output
def action_init(conf, args):
Clone component repositories
Check git is initialised; if not, copy initial data from component repos
for name in conf.repos:
ldir = conf.repos[name]['local_repo_dir']
if not os.path.exists(ldir):"cloning %s to %s" %(conf.repos[name]['src_uri'], ldir))
subprocess.check_call("git clone %s %s" % (conf.repos[name]['src_uri'], ldir), shell=True)
if not os.path.exists(".git"):
runcmd("git init")
if conf.history:
# Need a common ref for all trees.
runcmd('git commit -m "initial empty commit" --allow-empty')
startrev = runcmd('git rev-parse master').strip()
for name in conf.repos:
repo = conf.repos[name]
ldir = repo['local_repo_dir']
branch = repo.get('branch', "master")
lastrev = repo.get('last_revision', None)
if lastrev and lastrev != "HEAD":
initialrev = lastrev
if branch:
if not check_rev_branch(name, ldir, lastrev, branch):
sys.exit(1)"Copying data from %s at specified revision %s..." % (name, lastrev))
lastrev = None
initialrev = branch"Copying data from %s..." % name)
# Sanity check initialrev and turn it into hash (required for copying history,
# because resolving a name ref only works in the component repo).
rev = runcmd('git rev-parse %s' % initialrev, ldir).strip()
if rev != initialrev:
refs = runcmd('git show-ref -s %s' % initialrev, ldir).split('\n')
if len(set(refs)) > 1:
# Happens for example when configured to track
# "master" and there is a refs/heads/master. The
# traditional behavior from "git archive" (preserved
# here) it to choose the first one. This might not be
# intended, so at least warn about it.
logger.warn("%s: initial revision '%s' not unique, picking result of rev-parse = %s" %
(name, initialrev, refs[0]))
initialrev = rev
# show-ref fails for hashes. Skip the sanity warning in that case.
initialrev = rev
dest_dir = repo['dest_dir']
if dest_dir != ".":
extract_dir = os.path.join(os.getcwd(), dest_dir)
if not os.path.exists(extract_dir):
extract_dir = os.getcwd()
file_filter = repo.get('file_filter', "")
exclude_patterns = repo.get('file_exclude', '').split()
def copy_selected_files(initialrev, extract_dir, file_filter, exclude_patterns, ldir,
# When working inside a filtered branch which had the
# files already moved, we need to prepend the
# subdirectory to all filters, otherwise they would
# not match.
if subdir == '.':
subdir = ''
elif subdir:
subdir = os.path.normpath(subdir)
file_filter = ' '.join([subdir + '/' + x for x in file_filter.split()])
exclude_patterns = [subdir + '/' + x for x in exclude_patterns]
# To handle both cases, we cd into the target
# directory and optionally tell tar to strip the path
# prefix when the files were already moved.
subdir_components = len(subdir.split(os.path.sep)) if subdir else 0
strip=('--strip-components=%d' % subdir_components) if subdir else ''
# TODO: file_filter wild cards do not work (and haven't worked before either), because
# a) GNU tar requires a --wildcards parameter before turning on wild card matching.
# b) The semantic is not as intendend (src/*.c also matches src/foo/bar.c,
# in contrast to the other use of file_filter as parameter of "git archive"
# where it only matches .c files directly in src).
files = runcmd("git archive %s %s | tar -x -v %s -C %s %s" %
(initialrev, subdir,
strip, extract_dir, file_filter),
if exclude_patterns:
# Implement file removal by letting tar create the
# file and then deleting it in the file system
# again. Uses the list of files created by tar (easier
# than walking the tree).
for file in files.split('\n'):
for pattern in exclude_patterns:
if fnmatch.fnmatch(file, pattern):
os.unlink(os.path.join(*([extract_dir] + ['..'] * subdir_components + [file])))
if not conf.history:
copy_selected_files(initialrev, extract_dir, file_filter, exclude_patterns, ldir)
# First fetch remote history into local repository.
# We need a ref for that, so ensure that there is one.
refname = "combo-layer-init-%s" % name
runcmd("git branch -f %s %s" % (refname, initialrev), ldir)
runcmd("git fetch %s %s" % (ldir, refname))
runcmd("git branch -D %s" % refname, ldir)
# Make that the head revision.
runcmd("git checkout -b %s %s" % (name, initialrev))
# Optional: cut the history by replacing the given
# start point(s) with commits providing the same
# content (aka tree), but with commit information that
# makes it clear that this is an artifically created
# commit and nothing the original authors had anything
# to do with.
since_rev = repo.get('since_revision', '')
if since_rev:
committer = runcmd('git var GIT_AUTHOR_IDENT').strip()
# Same time stamp, no name.
author = re.sub('.* (\d+ [+-]\d+)', r'unknown <unknown> \1', committer)'author %s' % author)
for rev in since_rev.split():
# Resolve in component repo...
rev = runcmd('git log --oneline --no-abbrev-commit -n1 %s' % rev, ldir).split()[0]
# ... and then get the tree in current
# one. The commit should be in both repos with
# the same tree, but better check here.
tree = runcmd('git show -s --pretty=format:%%T %s' % rev).strip()
with tempfile.NamedTemporaryFile() as editor:
editor.write('''cat >$1 <<EOF
tree %s
author %s
committer %s
%s: squashed import of component
This commit copies the entire set of files as found in
%s %s
For more information about previous commits, see the
upstream repository.
Commit created by combo-layer.
''' % (tree, author, committer, name, name, since_rev))
os.environ['GIT_EDITOR'] = 'sh %s' %
runcmd('git replace --edit %s' % rev)
# Optional: rewrite history to change commit messages or to move files.
if 'hook' in repo or dest_dir != ".":
filter_branch = ['git', 'filter-branch', '--force']
with tempfile.NamedTemporaryFile() as hookwrapper:
if 'hook' in repo:
# Create a shell script wrapper around the original hook that
# can be used by git filter-branch. Hook may or may not have
# an absolute path.
hook = repo['hook']
hook = os.path.join(os.path.dirname(conf.conffile), '..', hook)
# The wrappers turns the commit message
# from stdin into a fake patch header.
# This is good enough for changing Subject
# and commit msg body with normal
# combo-layer hooks.
hookwrapper.write('''set -e
trap "rm $tmpname" EXIT
echo -n 'Subject: [PATCH] ' >>$tmpname
cat >>$tmpname
if ! [ $(tail -c 1 $tmpname | od -A n -t x1) == '0a' ]; then
echo >>$tmpname
echo '---' >>$tmpname
%s $tmpname $GIT_COMMIT %s
tail -c +18 $tmpname | head -c -4
''' % (hook, name))
filter_branch.extend(['--msg-filter', 'bash %s' %])
if dest_dir != ".":
parent = os.path.dirname(dest_dir)
if not parent:
parent = '.'
# May run outside of the current directory, so do not assume that .git exists.
filter_branch.extend(['--tree-filter', 'mkdir -p .git/tmptree && find . -mindepth 1 -maxdepth 1 ! -name .git -print0 | xargs -0 -I SOURCE mv SOURCE .git/tmptree && mkdir -p %s && mv .git/tmptree %s' % (parent, dest_dir)])
runcmd('git update-ref -d refs/original/refs/heads/%s' % name)
repo['rewritten_revision'] = runcmd('git rev-parse HEAD').strip()
repo['stripped_revision'] = repo['rewritten_revision']
# Optional filter files: remove everything and re-populate using the normal filtering code.
# Override any potential .gitignore.
if file_filter or exclude_patterns:
runcmd('git rm -rf .')
if not os.path.exists(extract_dir):
copy_selected_files('HEAD', extract_dir, file_filter, exclude_patterns, '.',
runcmd('git add --all --force .')
if runcmd('git status --porcelain'):
# Something to commit.
runcmd(['git', 'commit', '-m',
'''%s: select file subset
Files from the component repository were chosen based on
the following filters:
file_filter = %s
file_exclude = %s''' % (name, file_filter or '<empty>', repo.get('file_exclude', '<empty>'))])
repo['stripped_revision'] = runcmd('git rev-parse HEAD').strip()
if not lastrev:
lastrev = runcmd('git rev-parse %s' % initialrev, ldir).strip()
conf.update(name, "last_revision", lastrev, initmode=True)
if not conf.history:
runcmd("git add .")
# Create Octopus merge commit according to
runcmd('git checkout master')
merge = ['git', 'merge', '--no-commit']
for name in conf.repos:
repo = conf.repos[name]
# Use branch created earlier.
# Root all commits which have no parent in the common
# ancestor in the new repository.
for start in runcmd('git log --pretty=format:%%H --max-parents=0 %s' % name).split('\n'):
runcmd('git replace --graft %s %s' % (start, startrev))
except Exception, error:'''Merging component repository history failed, perhaps because of merge conflicts.
It may be possible to commit anyway after resolving these conflicts.
%s''' % error)
# Create MERGE_HEAD and MERGE_MSG. "git merge" itself
# does not create MERGE_HEAD in case of a (harmless) failure,
# and we want certain auto-generated information in the
# commit message for future reference and/or automation.
with open('.git/MERGE_HEAD', 'w') as head:
with open('.git/MERGE_MSG', 'w') as msg:
msg.write('repo: initial import of components\n\n')
# head.write('%s\n' % startrev)
for name in conf.repos:
repo = conf.repos[name]
# <upstream ref> <rewritten ref> <rewritten + files removed>
msg.write('combo-layer-%s: %s %s %s\n' % (name,
rev = runcmd('git rev-parse %s' % name).strip()
head.write('%s\n' % rev)
if conf.localconffile:
localadded = True
runcmd("git rm --cached %s" % conf.localconffile, printerr=False)
except subprocess.CalledProcessError:
localadded = False
if localadded:
localrelpath = os.path.relpath(conf.localconffile)
runcmd("grep -q %s .gitignore || echo %s >> .gitignore" % (localrelpath, localrelpath))
runcmd("git add .gitignore")"Added local configuration file %s to .gitignore", localrelpath)"Initial combo layer repository data has been created; please make any changes if desired and then use 'git commit' to make the initial commit.")
else:"Repository already initialised, nothing to do.")
def check_repo_clean(repodir):
check if the repo is clean
exit if repo is dirty
output=runcmd("git status --porcelain", repodir)
r = re.compile('\?\? patch-.*/')
dirtyout = [item for item in output.splitlines() if not r.match(item)]
if dirtyout:
logger.error("git repo %s is dirty, please fix it first", repodir)
def check_patch(patchfile):
f = open(patchfile)
ln = f.readline()
of = None
in_patch = False
beyond_msg = False
pre_buf = ''
while ln:
if not beyond_msg:
if ln == '---\n':
if not of:
in_patch = False
beyond_msg = True
elif ln.startswith('--- '):
# We have a diff in the commit message
in_patch = True
if not of:
print('WARNING: %s contains a diff in its commit message, indenting to avoid failure during apply' % patchfile)
of = open(patchfile + '.tmp', 'w')
pre_buf = ''
elif in_patch and not ln[0] in '+-@ \n\r':
in_patch = False
if of:
if in_patch:
of.write(' ' + ln)
pre_buf += ln
ln = f.readline()
if of:
os.rename(patchfile + '.tmp', patchfile)
def drop_to_shell(workdir=None):
if not sys.stdin.isatty():
print "Not a TTY so can't drop to shell for resolution, exiting."
return False
shell = os.environ.get('SHELL', 'bash')
print('Dropping to shell "%s"\n' \
'When you are finished, run the following to continue:\n' \
' exit -- continue to apply the patches\n' \
' exit 1 -- abort\n' % shell);
ret =[shell], cwd=workdir)
if ret != 0:
print "Aborting"
return False
return True
def check_rev_branch(component, repodir, rev, branch):
actualbranch = runcmd("git branch --contains %s" % rev, repodir, printerr=False)
except subprocess.CalledProcessError as e:
if e.returncode == 129:
actualbranch = ""
if not actualbranch:
logger.error("%s: specified revision %s is invalid!" % (component, rev))
return False
branches = []
branchlist = actualbranch.split("\n")
for b in branchlist:
branches.append(b.strip().split(' ')[-1])
if branch not in branches:
logger.error("%s: specified revision %s is not on specified branch %s!" % (component, rev, branch))
return False
return True
def get_repos(conf, repo_names):
repos = []
for name in repo_names:
if name.startswith('-'):
for repo in repos:
if not repo in conf.repos:
logger.error("Specified component '%s' not found in configuration" % repo)
if not repos:
repos = [ repo for repo in conf.repos if conf.repos[repo].get("update", True) ]
return repos
def action_pull(conf, args):
update the component repos only
repos = get_repos(conf, args[1:])
# make sure all repos are clean
for name in repos:
for name in repos:
repo = conf.repos[name]
ldir = repo['local_repo_dir']
branch = repo.get('branch', "master")"update branch %s of component repo %s in %s ..." % (branch, name, ldir))
if not conf.hard_reset:
# Try to pull only the configured branch. Beware that this may fail
# when the branch is currently unknown (for example, after reconfiguring
# combo-layer). In that case we need to fetch everything and try the check out
# and pull again.
runcmd("git checkout %s" % branch, ldir, printerr=False)
except subprocess.CalledProcessError:
output=runcmd("git fetch", ldir)
runcmd("git checkout %s" % branch, ldir)
runcmd("git pull --ff-only", ldir)
output=runcmd("git pull --ff-only", ldir)
output=runcmd("git fetch", ldir)
runcmd("git checkout %s" % branch, ldir)
runcmd("git reset --hard FETCH_HEAD", ldir)
def action_update(conf, args):
update the component repos
generate the patch list
apply the generated patches
components = [arg.split(':')[0] for arg in args[1:]]
revisions = {}
for arg in args[1:]:
if ':' in arg:
a = arg.split(':', 1)
revisions[a[0]] = a[1]
repos = get_repos(conf, components)
# make sure combo repo is clean
import uuid
patch_dir = "patch-%s" % uuid.uuid4()
if not os.path.exists(patch_dir):
# Step 1: update the component repos
if conf.nopull:"Skipping pull (-n)")
action_pull(conf, ['arg0'] + components)
for name in repos:
revision = revisions.get(name, None)
repo = conf.repos[name]
ldir = repo['local_repo_dir']
dest_dir = repo['dest_dir']
branch = repo.get('branch', "master")
repo_patch_dir = os.path.join(os.getcwd(), patch_dir, name)
# Step 2: generate the patch list and store to patch dir"Generating patches from %s..." % name)
top_revision = revision or branch
if not check_rev_branch(name, ldir, top_revision, branch):
if dest_dir != ".":
prefix = "--src-prefix=a/%s/ --dst-prefix=b/%s/" % (dest_dir, dest_dir)
prefix = ""
if repo['last_revision'] == "":"Warning: last_revision of component %s is not set, starting from the first commit" % name)
patch_cmd_range = "--root %s" % top_revision
rev_cmd_range = top_revision
if not check_rev_branch(name, ldir, repo['last_revision'], branch):
patch_cmd_range = "%s..%s" % (repo['last_revision'], top_revision)
rev_cmd_range = patch_cmd_range
file_filter = repo.get('file_filter',".")
# Filter out unwanted files
exclude = repo.get('file_exclude', '')
if exclude:
for path in exclude.split():
p = "%s/%s" % (dest_dir, path) if dest_dir != '.' else path
file_filter += " ':!%s'" % p
patch_cmd = "git format-patch -N %s --output-directory %s %s -- %s" % \
(prefix,repo_patch_dir, patch_cmd_range, file_filter)
output = runcmd(patch_cmd, ldir)
logger.debug("generated patch set:\n%s" % output)
patchlist = output.splitlines()
rev_cmd = "git rev-list --no-merges %s -- %s" % (rev_cmd_range, file_filter)
revlist = runcmd(rev_cmd, ldir).splitlines()
# Step 3: Call repo specific hook to adjust patch
if 'hook' in repo:
# hook parameter is: ./hook patchpath revision reponame
for patch in patchlist:
runcmd("%s %s %s %s" % (repo['hook'], patch, revlist[count], name))
# Step 4: write patch list and revision list to file, for user to edit later
patchlist_file = os.path.join(os.getcwd(), patch_dir, "patchlist-%s" % name)
repo['patchlist'] = patchlist_file
f = open(patchlist_file, 'w')
for patch in patchlist:
f.write("%s %s\n" % (patch, revlist[count]))
check_patch(os.path.join(patch_dir, patch))
# Step 5: invoke bash for user to edit patch and patch list
if conf.interactive:
print('You may now edit the patch and patch list in %s\n' \
'For example, you can remove unwanted patch entries from patchlist-*, so that they will be not applied later' % patch_dir);
if not drop_to_shell(patch_dir):
# Step 6: apply the generated and revised patch
apply_patchlist(conf, repos)
runcmd("rm -rf %s" % patch_dir)
# Step 7: commit the updated config file if it's being tracked
relpath = os.path.relpath(conf.conffile)
output = runcmd("git status --porcelain %s" % relpath, printerr=False)
# Outside the repository
output = None
if output:"Committing updated configuration file")
if output.lstrip().startswith("M"):
# create the "components" string
component_str = "all components"
if len(components) > 0:
# otherwise tell which components were actually changed
component_str = ", ".join(components)
# expand the template with known values
template = Template(conf.commit_msg_template)
raw_msg = template.substitute(components = component_str)
# sanitize the string before using it in command line
msg = raw_msg.replace('"', '\\"')
runcmd('git commit -m "%s" %s' % (msg, relpath))
def apply_patchlist(conf, repos):
apply the generated patch list to combo repo
for name in repos:
repo = conf.repos[name]
lastrev = repo["last_revision"]
prevrev = lastrev
# Get non-blank lines from patch list file
patchlist = []
if os.path.exists(repo['patchlist']) or not conf.interactive:
# Note: we want this to fail here if the file doesn't exist and we're not in
# interactive mode since the file should exist in this case
with open(repo['patchlist']) as f:
for line in f:
line = line.rstrip()
if line:
ldir = conf.repos[name]['local_repo_dir']
branch = conf.repos[name].get('branch', "master")
branchrev = runcmd("git rev-parse %s" % branch, ldir).strip()
if patchlist:"Applying patches from %s..." % name)
linecount = len(patchlist)
i = 1
for line in patchlist:
patchfile = line.split()[0]
lastrev = line.split()[1]
patchdisp = os.path.relpath(patchfile)
if os.path.getsize(patchfile) == 0:"(skipping %d/%d %s - no changes)" % (i, linecount, patchdisp))
cmd = "git am --keep-cr %s-p1 %s" % ('-s ' if repo.get('signoff', True) else '', patchfile)"Applying %d/%d: %s" % (i, linecount, patchdisp))
except subprocess.CalledProcessError:'Running "git am --abort" to cleanup repo')
runcmd("git am --abort")
logger.error('"%s" failed' % cmd)"Please manually apply patch %s" % patchdisp)"Note: if you exit and continue applying without manually applying the patch, it will be skipped")
if not drop_to_shell():
if prevrev != repo['last_revision']:
conf.update(name, "last_revision", prevrev)
prevrev = lastrev
i += 1
# Once all patches are applied, we should update
# last_revision to the branch head instead of the last
# applied patch. The two are not necessarily the same when
# the last commit is a merge commit or when the patches at
# the branch head were intentionally excluded.
# If we do not do that for a merge commit, the next
# combo-layer run will only exclude patches reachable from
# one of the merged branches and try to re-apply patches
# from other branches even though they were already
# copied.
# If patches were intentionally excluded, the next run will
# present them again instead of skipping over them. This
# may or may not be intended, so the code here is conservative
# and only addresses the "head is merge commit" case.
if lastrev != branchrev and \
len(runcmd("git show --pretty=format:%%P --no-patch %s" % branch, ldir).split()) > 1:
lastrev = branchrev
else:"No patches to apply from %s" % name)
lastrev = branchrev
if lastrev != repo['last_revision']:
conf.update(name, "last_revision", lastrev)
def action_splitpatch(conf, args):
generate the commit patch and
split the patch per repo
if len(args) > 1:
commit = args[1]
commit = "HEAD"
patchdir = "splitpatch-%s" % commit
if not os.path.exists(patchdir):
# filerange_root is for the repo whose dest_dir is root "."
# and it should be specified by excluding all other repo dest dir
# like "-x repo1 -x repo2 -x repo3 ..."
filerange_root = ""
for name in conf.repos:
dest_dir = conf.repos[name]['dest_dir']
if dest_dir != ".":
filerange_root = '%s -x "%s/*"' % (filerange_root, dest_dir)
for name in conf.repos:
dest_dir = conf.repos[name]['dest_dir']
patch_filename = "%s/%s.patch" % (patchdir, name)
if dest_dir == ".":
cmd = "git format-patch -n1 --stdout %s^..%s | filterdiff -p1 %s > %s" % (commit, commit, filerange_root, patch_filename)
cmd = "git format-patch --no-prefix -n1 --stdout %s^..%s -- %s > %s" % (commit, commit, dest_dir, patch_filename)
# Detect empty patches (including those produced by filterdiff above
# that contain only preamble text)
if os.path.getsize(patch_filename) == 0 or runcmd("filterdiff %s" % patch_filename) == "":
os.remove(patch_filename)"(skipping %s - no changes)", name)
def action_error(conf, args):"invalid action %s" % args[0])
actions = {
"init": action_init,
"update": action_update,
"pull": action_pull,
"splitpatch": action_splitpatch,
def main():
parser = optparse.OptionParser(
version = "Combo Layer Repo Tool version %s" % __version__,
usage = """%prog [options] action
Create and update a combination layer repository from multiple component repositories.
init initialise the combo layer repo
update [components] get patches from component repos and apply them to the combo repo
pull [components] just pull component repos only
splitpatch [commit] generate commit patch and split per component, default commit is HEAD""")
parser.add_option("-c", "--conf", help = "specify the config file (conf/combo-layer.conf is the default).",
action = "store", dest = "conffile", default = "conf/combo-layer.conf")
parser.add_option("-i", "--interactive", help = "interactive mode, user can edit the patch list and patches",
action = "store_true", dest = "interactive", default = False)
parser.add_option("-D", "--debug", help = "output debug information",
action = "store_true", dest = "debug", default = False)
parser.add_option("-n", "--no-pull", help = "skip pulling component repos during update",
action = "store_true", dest = "nopull", default = False)
help = "instead of pull do fetch and hard-reset in component repos",
action = "store_true", dest = "hard_reset", default = False)
parser.add_option("-H", "--history", help = "import full history of components during init",
action = "store_true", default = False)
options, args = parser.parse_args(sys.argv)
# Dispatch to action handler
if len(args) == 1:
logger.error("No action specified, exiting")
elif args[1] not in actions:
logger.error("Unsupported action %s, exiting\n" % (args[1]))
elif not os.path.exists(options.conffile):
logger.error("No valid config file, exiting\n")
if options.debug:
confdata = Configuration(options)
initmode = (args[1] == 'init')
actions.get(args[1], action_error)(confdata, args[1:])
if __name__ == "__main__":
ret = main()
except Exception:
ret = 1
import traceback