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# subrepo.py - sub-repository handling for Mercurial
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#
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# Copyright 2006, 2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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import errno, os
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from i18n import _
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import config, util, node, error
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hg = None
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nullstate = ('', '')
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def state(ctx):
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p = config.config()
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def read(f, sections=None, remap=None):
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if f in ctx:
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try:
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p.parse(f, ctx[f].data(), sections, remap)
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except IOError, err:
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if err.errno != errno.ENOENT:
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raise
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read('.hgsub')
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rev = {}
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if '.hgsubstate' in ctx:
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try:
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for l in ctx['.hgsubstate'].data().splitlines():
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revision, path = l.split(" ", 1)
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rev[path] = revision
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except IOError, err:
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if err.errno != errno.ENOENT:
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raise
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state = {}
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for path, src in p[''].items():
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state[path] = (src, rev.get(path, ''))
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return state
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def writestate(repo, state):
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repo.wwrite('.hgsubstate',
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''.join(['%s %s\n' % (state[s][1], s)
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for s in sorted(state)]), '')
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def submerge(repo, wctx, mctx, actx):
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if mctx == actx: # backwards?
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actx = wctx.p1()
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s1 = wctx.substate
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s2 = mctx.substate
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sa = actx.substate
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sm = {}
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repo.ui.debug("subrepo merge %s %s %s\n" % (wctx, mctx, actx))
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def debug(s, msg, r=""):
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if r:
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r = "%s:%s" % r
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repo.ui.debug(" subrepo %s: %s %s\n" % (s, msg, r))
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for s, l in s1.items():
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if wctx != actx and wctx.sub(s).dirty():
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l = (l[0], l[1] + "+")
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a = sa.get(s, nullstate)
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if s in s2:
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r = s2[s]
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if l == r or r == a: # no change or local is newer
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sm[s] = l
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continue
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elif l == a: # other side changed
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debug(s, "other changed, get", r)
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wctx.sub(s).get(r)
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sm[s] = r
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elif l[0] != r[0]: # sources differ
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if repo.ui.promptchoice(
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_(' subrepository sources for %s differ\n'
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'use (l)ocal source (%s) or (r)emote source (%s)?')
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% (s, l[0], r[0]),
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(_('&Local'), _('&Remote')), 0):
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debug(s, "prompt changed, get", r)
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wctx.sub(s).get(r)
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sm[s] = r
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elif l[1] == a[1]: # local side is unchanged
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debug(s, "other side changed, get", r)
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wctx.sub(s).get(r)
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sm[s] = r
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else:
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debug(s, "both sides changed, merge with", r)
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wctx.sub(s).merge(r)
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sm[s] = l
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elif l == a: # remote removed, local unchanged
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debug(s, "remote removed, remove")
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wctx.sub(s).remove()
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else:
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if repo.ui.promptchoice(
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_(' local changed subrepository %s which remote removed\n'
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'use (c)hanged version or (d)elete?') % s,
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(_('&Changed'), _('&Delete')), 0):
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debug(s, "prompt remove")
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wctx.sub(s).remove()
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for s, r in s2.items():
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if s in s1:
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continue
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elif s not in sa:
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debug(s, "remote added, get", r)
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wctx.sub(s).get(r)
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sm[s] = r
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elif r != sa[s]:
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if repo.ui.promptchoice(
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_(' remote changed subrepository %s which local removed\n'
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'use (c)hanged version or (d)elete?') % s,
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(_('&Changed'), _('&Delete')), 0) == 0:
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debug(s, "prompt recreate", r)
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wctx.sub(s).get(r)
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sm[s] = r
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# record merged .hgsubstate
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writestate(repo, sm)
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def _abssource(repo, push=False):
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if hasattr(repo, '_subparent'):
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source = repo._subsource
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if source.startswith('/') or '://' in source:
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return source
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parent = _abssource(repo._subparent)
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if '://' in parent:
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if parent[-1] == '/':
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parent = parent[:-1]
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return parent + '/' + source
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return os.path.join(parent, repo._subsource)
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if push and repo.ui.config('paths', 'default-push'):
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return repo.ui.config('paths', 'default-push', repo.root)
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return repo.ui.config('paths', 'default', repo.root)
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def subrepo(ctx, path):
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# subrepo inherently violates our import layering rules
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# because it wants to make repo objects from deep inside the stack
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# so we manually delay the circular imports to not break
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# scripts that don't use our demand-loading
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global hg
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import hg as h
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hg = h
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util.path_auditor(ctx._repo.root)(path)
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state = ctx.substate.get(path, nullstate)
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if state[0].startswith('['): # future expansion
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raise error.Abort('unknown subrepo source %s' % state[0])
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return hgsubrepo(ctx, path, state)
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# subrepo classes need to implement the following methods:
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# __init__(self, ctx, path, state)
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# dirty(self): returns true if the dirstate of the subrepo
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# does not match current stored state
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# commit(self, text, user, date): commit the current changes
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# to the subrepo with the given log message. Use given
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# user and date if possible. Return the new state of the subrepo.
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# remove(self): remove the subrepo (should verify the dirstate
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# is not dirty first)
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# get(self, state): run whatever commands are needed to put the
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# subrepo into this state
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# merge(self, state): merge currently-saved state with the new state.
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# push(self, force): perform whatever action is analagous to 'hg push'
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# This may be a no-op on some systems.
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class hgsubrepo(object):
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def __init__(self, ctx, path, state):
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self._path = path
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self._state = state
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r = ctx._repo
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root = r.wjoin(path)
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if os.path.exists(os.path.join(root, '.hg')):
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self._repo = hg.repository(r.ui, root)
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else:
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util.makedirs(root)
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self._repo = hg.repository(r.ui, root, create=True)
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f = file(os.path.join(root, '.hg', 'hgrc'), 'w')
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f.write('[paths]\ndefault = %s\n' % state[0])
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f.close()
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self._repo._subparent = r
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self._repo._subsource = state[0]
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def dirty(self):
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r = self._state[1]
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if r == '':
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return True
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w = self._repo[None]
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if w.p1() != self._repo[r]: # version checked out changed
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return True
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return w.dirty() # working directory changed
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def commit(self, text, user, date):
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self._repo.ui.debug("committing subrepo %s\n" % self._path)
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n = self._repo.commit(text, user, date)
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if not n:
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return self._repo['.'].hex() # different version checked out
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return node.hex(n)
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def remove(self):
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# we can't fully delete the repository as it may contain
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# local-only history
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self._repo.ui.note(_('removing subrepo %s\n') % self._path)
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hg.clean(self._repo, node.nullid, False)
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def _get(self, state):
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source, revision = state
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try:
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self._repo.lookup(revision)
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except error.RepoError:
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self._repo._subsource = source
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self._repo.ui.status(_('pulling subrepo %s\n') % self._path)
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srcurl = _abssource(self._repo)
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other = hg.repository(self._repo.ui, srcurl)
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self._repo.pull(other)
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def get(self, state):
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self._get(state)
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source, revision = state
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self._repo.ui.debug("getting subrepo %s\n" % self._path)
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hg.clean(self._repo, revision, False)
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def merge(self, state):
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self._get(state)
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cur = self._repo['.']
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dst = self._repo[state[1]]
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if dst.ancestor(cur) == cur:
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self._repo.ui.debug("updating subrepo %s\n" % self._path)
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hg.update(self._repo, state[1])
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else:
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self._repo.ui.debug("merging subrepo %s\n" % self._path)
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hg.merge(self._repo, state[1], remind=False)
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def push(self, force):
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# push subrepos depth-first for coherent ordering
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c = self._repo['']
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subs = c.substate # only repos that are committed
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for s in sorted(subs):
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c.sub(s).push(force)
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self._repo.ui.status(_('pushing subrepo %s\n') % self._path)
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dsturl = _abssource(self._repo, True)
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other = hg.repository(self._repo.ui, dsturl)
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self._repo.push(other, force)
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