# subrepo.py - sub-repository handling for Mercurial
#
# Copyright 2009-2010 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import errno, os, re, xml.dom.minidom, shutil, posixpath
import stat, subprocess, tarfile
from i18n import _
import config, scmutil, util, node, error, cmdutil, bookmarks
hg = None
propertycache = util.propertycache
nullstate = ('', '', 'empty')
def state(ctx, ui):
"""return a state dict, mapping subrepo paths configured in .hgsub
to tuple: (source from .hgsub, revision from .hgsubstate, kind
(key in types dict))
"""
p = config.config()
def read(f, sections=None, remap=None):
if f in ctx:
try:
data = ctx[f].data()
except IOError, err:
if err.errno != errno.ENOENT:
raise
# handle missing subrepo spec files as removed
ui.warn(_("warning: subrepo spec file %s not found\n") % f)
return
p.parse(f, data, sections, remap, read)
else:
raise util.Abort(_("subrepo spec file %s not found") % f)
if '.hgsub' in ctx:
read('.hgsub')
for path, src in ui.configitems('subpaths'):
p.set('subpaths', path, src, ui.configsource('subpaths', path))
rev = {}
if '.hgsubstate' in ctx:
try:
for l in ctx['.hgsubstate'].data().splitlines():
revision, path = l.split(" ", 1)
rev[path] = revision
except IOError, err:
if err.errno != errno.ENOENT:
raise
def remap(src):
for pattern, repl in p.items('subpaths'):
# Turn r'C:\foo\bar' into r'C:\\foo\\bar' since re.sub
# does a string decode.
repl = repl.encode('string-escape')
# However, we still want to allow back references to go
# through unharmed, so we turn r'\\1' into r'\1'. Again,
# extra escapes are needed because re.sub string decodes.
repl = re.sub(r'\\\\([0-9]+)', r'\\\1', repl)
try:
src = re.sub(pattern, repl, src, 1)
except re.error, e:
raise util.Abort(_("bad subrepository pattern in %s: %s")
% (p.source('subpaths', pattern), e))
return src
state = {}
for path, src in p[''].items():
kind = 'hg'
if src.startswith('['):
if ']' not in src:
raise util.Abort(_('missing ] in subrepo source'))
kind, src = src.split(']', 1)
kind = kind[1:]
src = src.lstrip() # strip any extra whitespace after ']'
if not util.url(src).isabs():
parent = _abssource(ctx._repo, abort=False)
if parent:
parent = util.url(parent)
parent.path = posixpath.join(parent.path or '', src)
parent.path = posixpath.normpath(parent.path)
joined = str(parent)
# Remap the full joined path and use it if it changes,
# else remap the original source.
remapped = remap(joined)
if remapped == joined:
src = remap(src)
else:
src = remapped
src = remap(src)
state[util.pconvert(path)] = (src.strip(), rev.get(path, ''), kind)
return state
def writestate(repo, state):
"""rewrite .hgsubstate in (outer) repo with these subrepo states"""
lines = ['%s %s\n' % (state[s][1], s) for s in sorted(state)]
repo.wwrite('.hgsubstate', ''.join(lines), '')
def submerge(repo, wctx, mctx, actx, overwrite):
"""delegated from merge.applyupdates: merging of .hgsubstate file
in working context, merging context and ancestor context"""
if mctx == actx: # backwards?
actx = wctx.p1()
s1 = wctx.substate
s2 = mctx.substate
sa = actx.substate
sm = {}
repo.ui.debug("subrepo merge %s %s %s\n" % (wctx, mctx, actx))
def debug(s, msg, r=""):
if r:
r = "%s:%s:%s" % r
repo.ui.debug(" subrepo %s: %s %s\n" % (s, msg, r))
for s, l in s1.items():
a = sa.get(s, nullstate)
ld = l # local state with possible dirty flag for compares
if wctx.sub(s).dirty():
ld = (l[0], l[1] + "+")
if wctx == actx: # overwrite
a = ld
if s in s2:
r = s2[s]
if ld == r or r == a: # no change or local is newer
sm[s] = l
continue
elif ld == a: # other side changed
debug(s, "other changed, get", r)
wctx.sub(s).get(r, overwrite)
sm[s] = r
elif ld[0] != r[0]: # sources differ
if repo.ui.promptchoice(
_(' subrepository sources for %s differ\n'
'use (l)ocal source (%s) or (r)emote source (%s)?')
% (s, l[0], r[0]),
(_('&Local'), _('&Remote')), 0):
debug(s, "prompt changed, get", r)
wctx.sub(s).get(r, overwrite)
sm[s] = r
elif ld[1] == a[1]: # local side is unchanged
debug(s, "other side changed, get", r)
wctx.sub(s).get(r, overwrite)
sm[s] = r
else:
debug(s, "both sides changed, merge with", r)
wctx.sub(s).merge(r)
sm[s] = l
elif ld == a: # remote removed, local unchanged
debug(s, "remote removed, remove")
wctx.sub(s).remove()
elif a == nullstate: # not present in remote or ancestor
debug(s, "local added, keep")
sm[s] = l
continue
else:
if repo.ui.promptchoice(
_(' local changed subrepository %s which remote removed\n'
'use (c)hanged version or (d)elete?') % s,
(_('&Changed'), _('&Delete')), 0):
debug(s, "prompt remove")
wctx.sub(s).remove()
for s, r in sorted(s2.items()):
if s in s1:
continue
elif s not in sa:
debug(s, "remote added, get", r)
mctx.sub(s).get(r)
sm[s] = r
elif r != sa[s]:
if repo.ui.promptchoice(
_(' remote changed subrepository %s which local removed\n'
'use (c)hanged version or (d)elete?') % s,
(_('&Changed'), _('&Delete')), 0) == 0:
debug(s, "prompt recreate", r)
wctx.sub(s).get(r)
sm[s] = r
# record merged .hgsubstate
writestate(repo, sm)
def _updateprompt(ui, sub, dirty, local, remote):
if dirty:
msg = (_(' subrepository sources for %s differ\n'
'use (l)ocal source (%s) or (r)emote source (%s)?\n')
% (subrelpath(sub), local, remote))
else:
msg = (_(' subrepository sources for %s differ (in checked out version)\n'
'use (l)ocal source (%s) or (r)emote source (%s)?\n')
% (subrelpath(sub), local, remote))
return ui.promptchoice(msg, (_('&Local'), _('&Remote')), 0)
def reporelpath(repo):
"""return path to this (sub)repo as seen from outermost repo"""
parent = repo
while util.safehasattr(parent, '_subparent'):
parent = parent._subparent
p = parent.root.rstrip(os.sep)
return repo.root[len(p) + 1:]
def subrelpath(sub):
"""return path to this subrepo as seen from outermost repo"""
if util.safehasattr(sub, '_relpath'):
return sub._relpath
if not util.safehasattr(sub, '_repo'):
return sub._path
return reporelpath(sub._repo)
def _abssource(repo, push=False, abort=True):
"""return pull/push path of repo - either based on parent repo .hgsub info
or on the top repo config. Abort or return None if no source found."""
if util.safehasattr(repo, '_subparent'):
source = util.url(repo._subsource)
if source.isabs():
return str(source)
source.path = posixpath.normpath(source.path)
parent = _abssource(repo._subparent, push, abort=False)
if parent:
parent = util.url(util.pconvert(parent))
parent.path = posixpath.join(parent.path or '', source.path)
parent.path = posixpath.normpath(parent.path)
return str(parent)
else: # recursion reached top repo
if util.safehasattr(repo, '_subtoppath'):
return repo._subtoppath
if push and repo.ui.config('paths', 'default-push'):
return repo.ui.config('paths', 'default-push')
if repo.ui.config('paths', 'default'):
return repo.ui.config('paths', 'default')
if abort:
raise util.Abort(_("default path for subrepository %s not found") %
reporelpath(repo))
def itersubrepos(ctx1, ctx2):
"""find subrepos in ctx1 or ctx2"""
# Create a (subpath, ctx) mapping where we prefer subpaths from
# ctx1. The subpaths from ctx2 are important when the .hgsub file
# has been modified (in ctx2) but not yet committed (in ctx1).
subpaths = dict.fromkeys(ctx2.substate, ctx2)
subpaths.update(dict.fromkeys(ctx1.substate, ctx1))
for subpath, ctx in sorted(subpaths.iteritems()):
yield subpath, ctx.sub(subpath)
def subrepo(ctx, path):
"""return instance of the right subrepo class for subrepo in path"""
# subrepo inherently violates our import layering rules
# because it wants to make repo objects from deep inside the stack
# so we manually delay the circular imports to not break
# scripts that don't use our demand-loading
global hg
import hg as h
hg = h
scmutil.pathauditor(ctx._repo.root)(path)
state = ctx.substate.get(path, nullstate)
if state[2] not in types:
raise util.Abort(_('unknown subrepo type %s') % state[2])
return types[state[2]](ctx, path, state[:2])
# subrepo classes need to implement the following abstract class:
class abstractsubrepo(object):
def dirty(self, ignoreupdate=False):
"""returns true if the dirstate of the subrepo is dirty or does not
match current stored state. If ignoreupdate is true, only check
whether the subrepo has uncommitted changes in its dirstate.
"""
raise NotImplementedError
def checknested(self, path):
"""check if path is a subrepository within this repository"""
return False
def commit(self, text, user, date):
"""commit the current changes to the subrepo with the given
log message. Use given user and date if possible. Return the
new state of the subrepo.
"""
raise NotImplementedError
def remove(self):
"""remove the subrepo
(should verify the dirstate is not dirty first)
"""
raise NotImplementedError
def get(self, state, overwrite=False):
"""run whatever commands are needed to put the subrepo into
this state
"""
raise NotImplementedError
def merge(self, state):
"""merge currently-saved state with the new state."""
raise NotImplementedError
def push(self, opts):
"""perform whatever action is analogous to 'hg push'
This may be a no-op on some systems.
"""
raise NotImplementedError
def add(self, ui, match, dryrun, listsubrepos, prefix, explicitonly):
return []
def status(self, rev2, **opts):
return [], [], [], [], [], [], []
def diff(self, diffopts, node2, match, prefix, **opts):
pass
def outgoing(self, ui, dest, opts):
return 1
def incoming(self, ui, source, opts):
return 1
def files(self):
"""return filename iterator"""
raise NotImplementedError
def filedata(self, name):
"""return file data"""
raise NotImplementedError
def fileflags(self, name):
"""return file flags"""
return ''
def archive(self, ui, archiver, prefix):
files = self.files()
total = len(files)
relpath = subrelpath(self)
ui.progress(_('archiving (%s)') % relpath, 0,
unit=_('files'), total=total)
for i, name in enumerate(files):
flags = self.fileflags(name)
mode = 'x' in flags and 0755 or 0644
symlink = 'l' in flags
archiver.addfile(os.path.join(prefix, self._path, name),
mode, symlink, self.filedata(name))
ui.progress(_('archiving (%s)') % relpath, i + 1,
unit=_('files'), total=total)
ui.progress(_('archiving (%s)') % relpath, None)
def walk(self, match):
'''
walk recursively through the directory tree, finding all files
matched by the match function
'''
pass
def forget(self, ui, match, prefix):
return []
class hgsubrepo(abstractsubrepo):
def __init__(self, ctx, path, state):
self._path = path
self._state = state
r = ctx._repo
root = r.wjoin(path)
create = False
if not os.path.exists(os.path.join(root, '.hg')):
create = True
util.makedirs(root)
self._repo = hg.repository(r.ui, root, create=create)
self._initrepo(r, state[0], create)
def _initrepo(self, parentrepo, source, create):
self._repo._subparent = parentrepo
self._repo._subsource = source
if create:
fp = self._repo.opener("hgrc", "w", text=True)
fp.write('[paths]\n')
def addpathconfig(key, value):
if value:
fp.write('%s = %s\n' % (key, value))
self._repo.ui.setconfig('paths', key, value)
defpath = _abssource(self._repo, abort=False)
defpushpath = _abssource(self._repo, True, abort=False)
addpathconfig('default', defpath)
if defpath != defpushpath:
addpathconfig('default-push', defpushpath)
fp.close()
def add(self, ui, match, dryrun, listsubrepos, prefix, explicitonly):
return cmdutil.add(ui, self._repo, match, dryrun, listsubrepos,
os.path.join(prefix, self._path), explicitonly)
def status(self, rev2, **opts):
try:
rev1 = self._state[1]
ctx1 = self._repo[rev1]
ctx2 = self._repo[rev2]
return self._repo.status(ctx1, ctx2, **opts)
except error.RepoLookupError, inst:
self._repo.ui.warn(_('warning: error "%s" in subrepository "%s"\n')
% (inst, subrelpath(self)))
return [], [], [], [], [], [], []
def diff(self, diffopts, node2, match, prefix, **opts):
try:
node1 = node.bin(self._state[1])
# We currently expect node2 to come from substate and be
# in hex format
if node2 is not None:
node2 = node.bin(node2)
cmdutil.diffordiffstat(self._repo.ui, self._repo, diffopts,
node1, node2, match,
prefix=os.path.join(prefix, self._path),
listsubrepos=True, **opts)
except error.RepoLookupError, inst:
self._repo.ui.warn(_('warning: error "%s" in subrepository "%s"\n')
% (inst, subrelpath(self)))
def archive(self, ui, archiver, prefix):
self._get(self._state + ('hg',))
abstractsubrepo.archive(self, ui, archiver, prefix)
rev = self._state[1]
ctx = self._repo[rev]
for subpath in ctx.substate:
s = subrepo(ctx, subpath)
s.archive(ui, archiver, os.path.join(prefix, self._path))
def dirty(self, ignoreupdate=False):
r = self._state[1]
if r == '' and not ignoreupdate: # no state recorded
return True
w = self._repo[None]
if r != w.p1().hex() and not ignoreupdate:
# different version checked out
return True
return w.dirty() # working directory changed
def checknested(self, path):
return self._repo._checknested(self._repo.wjoin(path))
def commit(self, text, user, date):
# don't bother committing in the subrepo if it's only been
# updated
if not self.dirty(True):
return self._repo['.'].hex()
self._repo.ui.debug("committing subrepo %s\n" % subrelpath(self))
n = self._repo.commit(text, user, date)
if not n:
return self._repo['.'].hex() # different version checked out
return node.hex(n)
def remove(self):
# we can't fully delete the repository as it may contain
# local-only history
self._repo.ui.note(_('removing subrepo %s\n') % subrelpath(self))
hg.clean(self._repo, node.nullid, False)
def _get(self, state):
source, revision, kind = state
if revision not in self._repo:
self._repo._subsource = source
srcurl = _abssource(self._repo)
other = hg.peer(self._repo.ui, {}, srcurl)
if len(self._repo) == 0:
self._repo.ui.status(_('cloning subrepo %s from %s\n')
% (subrelpath(self), srcurl))
parentrepo = self._repo._subparent
shutil.rmtree(self._repo.path)
other, self._repo = hg.clone(self._repo._subparent.ui, {}, other,
self._repo.root, update=False)
self._initrepo(parentrepo, source, create=True)
else:
self._repo.ui.status(_('pulling subrepo %s from %s\n')
% (subrelpath(self), srcurl))
self._repo.pull(other)
bookmarks.updatefromremote(self._repo.ui, self._repo, other,
srcurl)
def get(self, state, overwrite=False):
self._get(state)
source, revision, kind = state
self._repo.ui.debug("getting subrepo %s\n" % self._path)
hg.clean(self._repo, revision, False)
def merge(self, state):
self._get(state)
cur = self._repo['.']
dst = self._repo[state[1]]
anc = dst.ancestor(cur)
def mergefunc():
if anc == cur:
self._repo.ui.debug("updating subrepo %s\n" % subrelpath(self))
hg.update(self._repo, state[1])
elif anc == dst:
self._repo.ui.debug("skipping subrepo %s\n" % subrelpath(self))
else:
self._repo.ui.debug("merging subrepo %s\n" % subrelpath(self))
hg.merge(self._repo, state[1], remind=False)
wctx = self._repo[None]
if self.dirty():
if anc != dst:
if _updateprompt(self._repo.ui, self, wctx.dirty(), cur, dst):
mergefunc()
else:
mergefunc()
else:
mergefunc()
def push(self, opts):
force = opts.get('force')
newbranch = opts.get('new_branch')
ssh = opts.get('ssh')
# push subrepos depth-first for coherent ordering
c = self._repo['']
subs = c.substate # only repos that are committed
for s in sorted(subs):
if not c.sub(s).push(opts):
return False
dsturl = _abssource(self._repo, True)
self._repo.ui.status(_('pushing subrepo %s to %s\n') %
(subrelpath(self), dsturl))
other = hg.peer(self._repo.ui, {'ssh': ssh}, dsturl)
return self._repo.push(other, force, newbranch=newbranch)
def outgoing(self, ui, dest, opts):
return hg.outgoing(ui, self._repo, _abssource(self._repo, True), opts)
def incoming(self, ui, source, opts):
return hg.incoming(ui, self._repo, _abssource(self._repo, False), opts)
def files(self):
rev = self._state[1]
ctx = self._repo[rev]
return ctx.manifest()
def filedata(self, name):
rev = self._state[1]
return self._repo[rev][name].data()
def fileflags(self, name):
rev = self._state[1]
ctx = self._repo[rev]
return ctx.flags(name)
def walk(self, match):
ctx = self._repo[None]
return ctx.walk(match)
def forget(self, ui, match, prefix):
return cmdutil.forget(ui, self._repo, match,
os.path.join(prefix, self._path), True)
class svnsubrepo(abstractsubrepo):
def __init__(self, ctx, path, state):
self._path = path
self._state = state
self._ctx = ctx
self._ui = ctx._repo.ui
self._exe = util.findexe('svn')
if not self._exe:
raise util.Abort(_("'svn' executable not found for subrepo '%s'")
% self._path)
def _svncommand(self, commands, filename='', failok=False):
cmd = [self._exe]
extrakw = {}
if not self._ui.interactive():
# Making stdin be a pipe should prevent svn from behaving
# interactively even if we can't pass --non-interactive.
extrakw['stdin'] = subprocess.PIPE
# Starting in svn 1.5 --non-interactive is a global flag
# instead of being per-command, but we need to support 1.4 so
# we have to be intelligent about what commands take
# --non-interactive.
if commands[0] in ('update', 'checkout', 'commit'):
cmd.append('--non-interactive')
cmd.extend(commands)
if filename is not None:
path = os.path.join(self._ctx._repo.origroot, self._path, filename)
cmd.append(path)
env = dict(os.environ)
# Avoid localized output, preserve current locale for everything else.
env['LC_MESSAGES'] = 'C'
p = subprocess.Popen(cmd, bufsize=-1, close_fds=util.closefds,
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
universal_newlines=True, env=env, **extrakw)
stdout, stderr = p.communicate()
stderr = stderr.strip()
if not failok:
if p.returncode:
raise util.Abort(stderr or 'exited with code %d' % p.returncode)
if stderr:
self._ui.warn(stderr + '\n')
return stdout, stderr
@propertycache
def _svnversion(self):
output, err = self._svncommand(['--version'], filename=None)
m = re.search(r'^svn,\s+version\s+(\d+)\.(\d+)', output)
if not m:
raise util.Abort(_('cannot retrieve svn tool version'))
return (int(m.group(1)), int(m.group(2)))
def _wcrevs(self):
# Get the working directory revision as well as the last
# commit revision so we can compare the subrepo state with
# both. We used to store the working directory one.
output, err = self._svncommand(['info', '--xml'])
doc = xml.dom.minidom.parseString(output)
entries = doc.getElementsByTagName('entry')
lastrev, rev = '0', '0'
if entries:
rev = str(entries[0].getAttribute('revision')) or '0'
commits = entries[0].getElementsByTagName('commit')
if commits:
lastrev = str(commits[0].getAttribute('revision')) or '0'
return (lastrev, rev)
def _wcrev(self):
return self._wcrevs()[0]
def _wcchanged(self):
"""Return (changes, extchanges) where changes is True
if the working directory was changed, and extchanges is
True if any of these changes concern an external entry.
"""
output, err = self._svncommand(['status', '--xml'])
externals, changes = [], []
doc = xml.dom.minidom.parseString(output)
for e in doc.getElementsByTagName('entry'):
s = e.getElementsByTagName('wc-status')
if not s:
continue
item = s[0].getAttribute('item')
props = s[0].getAttribute('props')
path = e.getAttribute('path')
if item == 'external':
externals.append(path)
if (item not in ('', 'normal', 'unversioned', 'external')
or props not in ('', 'none', 'normal')):
changes.append(path)
for path in changes:
for ext in externals:
if path == ext or path.startswith(ext + os.sep):
return True, True
return bool(changes), False
def dirty(self, ignoreupdate=False):
if not self._wcchanged()[0]:
if self._state[1] in self._wcrevs() or ignoreupdate:
return False
return True
def commit(self, text, user, date):
# user and date are out of our hands since svn is centralized
changed, extchanged = self._wcchanged()
if not changed:
return self._wcrev()
if extchanged:
# Do not try to commit externals
raise util.Abort(_('cannot commit svn externals'))
commitinfo, err = self._svncommand(['commit', '-m', text])
self._ui.status(commitinfo)
newrev = re.search('Committed revision ([0-9]+).', commitinfo)
if not newrev:
raise util.Abort(commitinfo.splitlines()[-1])
newrev = newrev.groups()[0]
self._ui.status(self._svncommand(['update', '-r', newrev])[0])
return newrev
def remove(self):
if self.dirty():
self._ui.warn(_('not removing repo %s because '
'it has changes.\n' % self._path))
return
self._ui.note(_('removing subrepo %s\n') % self._path)
def onerror(function, path, excinfo):
if function is not os.remove:
raise
# read-only files cannot be unlinked under Windows
s = os.stat(path)
if (s.st_mode & stat.S_IWRITE) != 0:
raise
os.chmod(path, stat.S_IMODE(s.st_mode) | stat.S_IWRITE)
os.remove(path)
path = self._ctx._repo.wjoin(self._path)
shutil.rmtree(path, onerror=onerror)
try:
os.removedirs(os.path.dirname(path))
except OSError:
pass
def get(self, state, overwrite=False):
if overwrite:
self._svncommand(['revert', '--recursive'])
args = ['checkout']
if self._svnversion >= (1, 5):
args.append('--force')
# The revision must be specified at the end of the URL to properly
# update to a directory which has since been deleted and recreated.
args.append('%s@%s' % (state[0], state[1]))
status, err = self._svncommand(args, failok=True)
if not re.search('Checked out revision [0-9]+.', status):
if ('is already a working copy for a different URL' in err
and (self._wcchanged() == (False, False))):
# obstructed but clean working copy, so just blow it away.
self.remove()
self.get(state, overwrite=False)
return
raise util.Abort((status or err).splitlines()[-1])
self._ui.status(status)
def merge(self, state):
old = self._state[1]
new = state[1]
if new != self._wcrev():
dirty = old == self._wcrev() or self._wcchanged()[0]
if _updateprompt(self._ui, self, dirty, self._wcrev(), new):
self.get(state, False)
def push(self, opts):
# push is a no-op for SVN
return True
def files(self):
output = self._svncommand(['list'])
# This works because svn forbids \n in filenames.
return output.splitlines()
def filedata(self, name):
return self._svncommand(['cat'], name)
class gitsubrepo(abstractsubrepo):
def __init__(self, ctx, path, state):
# TODO add git version check.
self._state = state
self._ctx = ctx
self._path = path
self._relpath = os.path.join(reporelpath(ctx._repo), path)
self._abspath = ctx._repo.wjoin(path)
self._subparent = ctx._repo
self._ui = ctx._repo.ui
def _gitcommand(self, commands, env=None, stream=False):
return self._gitdir(commands, env=env, stream=stream)[0]
def _gitdir(self, commands, env=None, stream=False):
return self._gitnodir(commands, env=env, stream=stream,
cwd=self._abspath)
def _gitnodir(self, commands, env=None, stream=False, cwd=None):
"""Calls the git command
The methods tries to call the git command. versions previor to 1.6.0
are not supported and very probably fail.
"""
self._ui.debug('%s: git %s\n' % (self._relpath, ' '.join(commands)))
# unless ui.quiet is set, print git's stderr,
# which is mostly progress and useful info
errpipe = None
if self._ui.quiet:
errpipe = open(os.devnull, 'w')
p = subprocess.Popen(['git'] + commands, bufsize=-1, cwd=cwd, env=env,
close_fds=util.closefds,
stdout=subprocess.PIPE, stderr=errpipe)
if stream:
return p.stdout, None
retdata = p.stdout.read().strip()
# wait for the child to exit to avoid race condition.
p.wait()
if p.returncode != 0 and p.returncode != 1:
# there are certain error codes that are ok
command = commands[0]
if command in ('cat-file', 'symbolic-ref'):
return retdata, p.returncode
# for all others, abort
raise util.Abort('git %s error %d in %s' %
(command, p.returncode, self._relpath))
return retdata, p.returncode
def _gitmissing(self):
return not os.path.exists(os.path.join(self._abspath, '.git'))
def _gitstate(self):
return self._gitcommand(['rev-parse', 'HEAD'])
def _gitcurrentbranch(self):
current, err = self._gitdir(['symbolic-ref', 'HEAD', '--quiet'])
if err:
current = None
return current
def _gitremote(self, remote):
out = self._gitcommand(['remote', 'show', '-n', remote])
line = out.split('\n')[1]
i = line.index('URL: ') + len('URL: ')
return line[i:]
def _githavelocally(self, revision):
out, code = self._gitdir(['cat-file', '-e', revision])
return code == 0
def _gitisancestor(self, r1, r2):
base = self._gitcommand(['merge-base', r1, r2])
return base == r1
def _gitisbare(self):
return self._gitcommand(['config', '--bool', 'core.bare']) == 'true'
def _gitupdatestat(self):
"""This must be run before git diff-index.
diff-index only looks at changes to file stat;
this command looks at file contents and updates the stat."""
self._gitcommand(['update-index', '-q', '--refresh'])
def _gitbranchmap(self):
'''returns 2 things:
a map from git branch to revision
a map from revision to branches'''
branch2rev = {}
rev2branch = {}
out = self._gitcommand(['for-each-ref', '--format',
'%(objectname) %(refname)'])
for line in out.split('\n'):
revision, ref = line.split(' ')
if (not ref.startswith('refs/heads/') and
not ref.startswith('refs/remotes/')):
continue
if ref.startswith('refs/remotes/') and ref.endswith('/HEAD'):
continue # ignore remote/HEAD redirects
branch2rev[ref] = revision
rev2branch.setdefault(revision, []).append(ref)
return branch2rev, rev2branch
def _gittracking(self, branches):
'return map of remote branch to local tracking branch'
# assumes no more than one local tracking branch for each remote
tracking = {}
for b in branches:
if b.startswith('refs/remotes/'):
continue
bname = b.split('/', 2)[2]
remote = self._gitcommand(['config', 'branch.%s.remote' % bname])
if remote:
ref = self._gitcommand(['config', 'branch.%s.merge' % bname])
tracking['refs/remotes/%s/%s' %
(remote, ref.split('/', 2)[2])] = b
return tracking
def _abssource(self, source):
if '://' not in source:
# recognize the scp syntax as an absolute source
colon = source.find(':')
if colon != -1 and '/' not in source[:colon]:
return source
self._subsource = source
return _abssource(self)
def _fetch(self, source, revision):
if self._gitmissing():
source = self._abssource(source)
self._ui.status(_('cloning subrepo %s from %s\n') %
(self._relpath, source))
self._gitnodir(['clone', source, self._abspath])
if self._githavelocally(revision):
return
self._ui.status(_('pulling subrepo %s from %s\n') %
(self._relpath, self._gitremote('origin')))
# try only origin: the originally cloned repo
self._gitcommand(['fetch'])
if not self._githavelocally(revision):
raise util.Abort(_("revision %s does not exist in subrepo %s\n") %
(revision, self._relpath))
def dirty(self, ignoreupdate=False):
if self._gitmissing():
return self._state[1] != ''
if self._gitisbare():
return True
if not ignoreupdate and self._state[1] != self._gitstate():
# different version checked out
return True
# check for staged changes or modified files; ignore untracked files
self._gitupdatestat()
out, code = self._gitdir(['diff-index', '--quiet', 'HEAD'])
return code == 1
def get(self, state, overwrite=False):
source, revision, kind = state
if not revision:
self.remove()
return
self._fetch(source, revision)
# if the repo was set to be bare, unbare it
if self._gitisbare():
self._gitcommand(['config', 'core.bare', 'false'])
if self._gitstate() == revision:
self._gitcommand(['reset', '--hard', 'HEAD'])
return
elif self._gitstate() == revision:
if overwrite:
# first reset the index to unmark new files for commit, because
# reset --hard will otherwise throw away files added for commit,
# not just unmark them.
self._gitcommand(['reset', 'HEAD'])
self._gitcommand(['reset', '--hard', 'HEAD'])
return
branch2rev, rev2branch = self._gitbranchmap()
def checkout(args):
cmd = ['checkout']
if overwrite:
# first reset the index to unmark new files for commit, because
# the -f option will otherwise throw away files added for
# commit, not just unmark them.
self._gitcommand(['reset', 'HEAD'])
cmd.append('-f')
self._gitcommand(cmd + args)
def rawcheckout():
# no branch to checkout, check it out with no branch
self._ui.warn(_('checking out detached HEAD in subrepo %s\n') %
self._relpath)
self._ui.warn(_('check out a git branch if you intend '
'to make changes\n'))
checkout(['-q', revision])
if revision not in rev2branch:
rawcheckout()
return
branches = rev2branch[revision]
firstlocalbranch = None
for b in branches:
if b == 'refs/heads/master':
# master trumps all other branches
checkout(['refs/heads/master'])
return
if not firstlocalbranch and not b.startswith('refs/remotes/'):
firstlocalbranch = b
if firstlocalbranch:
checkout([firstlocalbranch])
return
tracking = self._gittracking(branch2rev.keys())
# choose a remote branch already tracked if possible
remote = branches[0]
if remote not in tracking:
for b in branches:
if b in tracking:
remote = b
break
if remote not in tracking:
# create a new local tracking branch
local = remote.split('/', 2)[2]
checkout(['-b', local, remote])
elif self._gitisancestor(branch2rev[tracking[remote]], remote):
# When updating to a tracked remote branch,
# if the local tracking branch is downstream of it,
# a normal `git pull` would have performed a "fast-forward merge"
# which is equivalent to updating the local branch to the remote.
# Since we are only looking at branching at update, we need to
# detect this situation and perform this action lazily.
if tracking[remote] != self._gitcurrentbranch():
checkout([tracking[remote]])
self._gitcommand(['merge', '--ff', remote])
else:
# a real merge would be required, just checkout the revision
rawcheckout()
def commit(self, text, user, date):
if self._gitmissing():
raise util.Abort(_("subrepo %s is missing") % self._relpath)
cmd = ['commit', '-a', '-m', text]
env = os.environ.copy()
if user:
cmd += ['--author', user]
if date:
# git's date parser silently ignores when seconds < 1e9
# convert to ISO8601
env['GIT_AUTHOR_DATE'] = util.datestr(date,
'%Y-%m-%dT%H:%M:%S %1%2')
self._gitcommand(cmd, env=env)
# make sure commit works otherwise HEAD might not exist under certain
# circumstances
return self._gitstate()
def merge(self, state):
source, revision, kind = state
self._fetch(source, revision)
base = self._gitcommand(['merge-base', revision, self._state[1]])
self._gitupdatestat()
out, code = self._gitdir(['diff-index', '--quiet', 'HEAD'])
def mergefunc():
if base == revision:
self.get(state) # fast forward merge
elif base != self._state[1]:
self._gitcommand(['merge', '--no-commit', revision])
if self.dirty():
if self._gitstate() != revision:
dirty = self._gitstate() == self._state[1] or code != 0
if _updateprompt(self._ui, self, dirty,
self._state[1][:7], revision[:7]):
mergefunc()
else:
mergefunc()
def push(self, opts):
force = opts.get('force')
if not self._state[1]:
return True
if self._gitmissing():
raise util.Abort(_("subrepo %s is missing") % self._relpath)
# if a branch in origin contains the revision, nothing to do
branch2rev, rev2branch = self._gitbranchmap()
if self._state[1] in rev2branch:
for b in rev2branch[self._state[1]]:
if b.startswith('refs/remotes/origin/'):
return True
for b, revision in branch2rev.iteritems():
if b.startswith('refs/remotes/origin/'):
if self._gitisancestor(self._state[1], revision):
return True
# otherwise, try to push the currently checked out branch
cmd = ['push']
if force:
cmd.append('--force')
current = self._gitcurrentbranch()
if current:
# determine if the current branch is even useful
if not self._gitisancestor(self._state[1], current):
self._ui.warn(_('unrelated git branch checked out '
'in subrepo %s\n') % self._relpath)
return False
self._ui.status(_('pushing branch %s of subrepo %s\n') %
(current.split('/', 2)[2], self._relpath))
self._gitcommand(cmd + ['origin', current])
return True
else:
self._ui.warn(_('no branch checked out in subrepo %s\n'
'cannot push revision %s') %
(self._relpath, self._state[1]))
return False
def remove(self):
if self._gitmissing():
return
if self.dirty():
self._ui.warn(_('not removing repo %s because '
'it has changes.\n') % self._relpath)
return
# we can't fully delete the repository as it may contain
# local-only history
self._ui.note(_('removing subrepo %s\n') % self._relpath)
self._gitcommand(['config', 'core.bare', 'true'])
for f in os.listdir(self._abspath):
if f == '.git':
continue
path = os.path.join(self._abspath, f)
if os.path.isdir(path) and not os.path.islink(path):
shutil.rmtree(path)
else:
os.remove(path)
def archive(self, ui, archiver, prefix):
source, revision = self._state
if not revision:
return
self._fetch(source, revision)
# Parse git's native archive command.
# This should be much faster than manually traversing the trees
# and objects with many subprocess calls.
tarstream = self._gitcommand(['archive', revision], stream=True)
tar = tarfile.open(fileobj=tarstream, mode='r|')
relpath = subrelpath(self)
ui.progress(_('archiving (%s)') % relpath, 0, unit=_('files'))
for i, info in enumerate(tar):
if info.isdir():
continue
if info.issym():
data = info.linkname
else:
data = tar.extractfile(info).read()
archiver.addfile(os.path.join(prefix, self._path, info.name),
info.mode, info.issym(), data)
ui.progress(_('archiving (%s)') % relpath, i + 1,
unit=_('files'))
ui.progress(_('archiving (%s)') % relpath, None)
def status(self, rev2, **opts):
rev1 = self._state[1]
if self._gitmissing() or not rev1:
# if the repo is missing, return no results
return [], [], [], [], [], [], []
modified, added, removed = [], [], []
self._gitupdatestat()
if rev2:
command = ['diff-tree', rev1, rev2]
else:
command = ['diff-index', rev1]
out = self._gitcommand(command)
for line in out.split('\n'):
tab = line.find('\t')
if tab == -1:
continue
status, f = line[tab - 1], line[tab + 1:]
if status == 'M':
modified.append(f)
elif status == 'A':
added.append(f)
elif status == 'D':
removed.append(f)
deleted = unknown = ignored = clean = []
return modified, added, removed, deleted, unknown, ignored, clean
types = {
'hg': hgsubrepo,
'svn': svnsubrepo,
'git': gitsubrepo,
}