# 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, urlparse, posixpath
from i18n import _
import config, util, node, error
hg = None
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:
p.parse(f, ctx[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
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:]
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))
state[path] = (src.strip(), rev.get(path, ''), kind)
return state
def writestate(repo, state):
"""rewrite .hgsubstate in (outer) repo with these subrepo states"""
repo.wwrite('.hgsubstate',
''.join(['%s %s\n' % (state[s][1], s)
for s in sorted(state)]), '')
def submerge(repo, wctx, mctx, actx):
"""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)
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)
sm[s] = r
elif ld[1] == a[1]: # local side is unchanged
debug(s, "other side changed, get", r)
wctx.sub(s).get(r)
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()
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 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 relpath(sub):
"""return path to this subrepo as seen from outermost repo"""
if not hasattr(sub, '_repo'):
return sub._path
parent = sub._repo
while hasattr(parent, '_subparent'):
parent = parent._subparent
return sub._repo.root[len(parent.root)+1:]
def _abssource(repo, push=False):
"""return pull/push path of repo - either based on parent repo
.hgsub info or on the subrepos own config"""
if hasattr(repo, '_subparent'):
source = repo._subsource
if source.startswith('/') or '://' in source:
return source
parent = _abssource(repo._subparent, push)
if '://' in parent:
if parent[-1] == '/':
parent = parent[:-1]
r = urlparse.urlparse(parent + '/' + source)
r = urlparse.urlunparse((r[0], r[1],
posixpath.normpath(r[2]),
r[3], r[4], r[5]))
return r
return posixpath.normpath(os.path.join(parent, repo._subsource))
if push and repo.ui.config('paths', 'default-push'):
return repo.ui.config('paths', 'default-push', repo.root)
return repo.ui.config('paths', 'default', repo.root)
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
util.path_auditor(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):
"""returns true if the dirstate of the subrepo does not match
current stored state
"""
raise NotImplementedError
def checknested(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):
"""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, force):
"""perform whatever action is analogous to 'hg push'
This may be a no-op on some systems.
"""
raise NotImplementedError
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._repo._subparent = r
self._repo._subsource = state[0]
if create:
fp = self._repo.opener("hgrc", "w", text=True)
fp.write('[paths]\n')
def addpathconfig(key, value):
fp.write('%s = %s\n' % (key, value))
self._repo.ui.setconfig('paths', key, value)
defpath = _abssource(self._repo)
defpushpath = _abssource(self._repo, True)
addpathconfig('default', defpath)
if defpath != defpushpath:
addpathconfig('default-push', defpushpath)
fp.close()
def dirty(self):
r = self._state[1]
if r == '':
return True
w = self._repo[None]
if w.p1() != self._repo[r]: # version checked out change
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):
self._repo.ui.debug("committing subrepo %s\n" % relpath(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') % relpath(self))
hg.clean(self._repo, node.nullid, False)
def _get(self, state):
source, revision, kind = state
try:
self._repo.lookup(revision)
except error.RepoError:
self._repo._subsource = source
srcurl = _abssource(self._repo)
self._repo.ui.status(_('pulling subrepo %s from %s\n')
% (relpath(self), srcurl))
other = hg.repository(self._repo.ui, srcurl)
self._repo.pull(other)
def get(self, state):
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)
if anc == cur:
self._repo.ui.debug("updating subrepo %s\n" % relpath(self))
hg.update(self._repo, state[1])
elif anc == dst:
self._repo.ui.debug("skipping subrepo %s\n" % relpath(self))
else:
self._repo.ui.debug("merging subrepo %s\n" % relpath(self))
hg.merge(self._repo, state[1], remind=False)
def push(self, force):
# 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(force):
return False
dsturl = _abssource(self._repo, True)
self._repo.ui.status(_('pushing subrepo %s to %s\n') %
(relpath(self), dsturl))
other = hg.repository(self._repo.ui, dsturl)
return self._repo.push(other, force)
class svnsubrepo(abstractsubrepo):
def __init__(self, ctx, path, state):
self._path = path
self._state = state
self._ctx = ctx
self._ui = ctx._repo.ui
def _svncommand(self, commands, filename=''):
path = os.path.join(self._ctx._repo.origroot, self._path, filename)
cmd = ['svn'] + commands + [path]
cmd = [util.shellquote(arg) for arg in cmd]
cmd = util.quotecommand(' '.join(cmd))
env = dict(os.environ)
# Avoid localized output, preserve current locale for everything else.
env['LC_MESSAGES'] = 'C'
write, read, err = util.popen3(cmd, env=env, newlines=True)
retdata = read.read()
err = err.read().strip()
if err:
raise util.Abort(err)
return retdata
def _wcrev(self):
output = self._svncommand(['info', '--xml'])
doc = xml.dom.minidom.parseString(output)
entries = doc.getElementsByTagName('entry')
if not entries:
return 0
return int(entries[0].getAttribute('revision') or 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 = 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')):
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):
if self._wcrev() == self._state[1] and not self._wcchanged()[0]:
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 = 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]))
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)
shutil.rmtree(self._ctx.repo.join(self._path))
def get(self, state):
status = self._svncommand(['checkout', state[0], '--revision', state[1]])
if not re.search('Checked out revision [0-9]+.', status):
raise util.Abort(status.splitlines()[-1])
self._ui.status(status)
def merge(self, state):
old = int(self._state[1])
new = int(state[1])
if new > old:
self.get(state)
def push(self, force):
# push is a no-op for SVN
return True
types = {
'hg': hgsubrepo,
'svn': svnsubrepo,
}