ref: 87c8fa541572387c012dab672890e13334ef8c37
dir: /sys/lib/python/mercurial/hg.py/
# hg.py - repository classes for mercurial # # Copyright 2005-2007 Matt Mackall <[email protected]> # Copyright 2006 Vadim Gelfer <[email protected]> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. from i18n import _ from lock import release import localrepo, bundlerepo, httprepo, sshrepo, statichttprepo import lock, util, extensions, error import merge as _merge import verify as _verify import errno, os, shutil def _local(path): return (os.path.isfile(util.drop_scheme('file', path)) and bundlerepo or localrepo) def parseurl(url, revs=[]): '''parse url#branch, returning url, branch + revs''' if '#' not in url: return url, (revs or None), revs and revs[-1] or None url, branch = url.split('#', 1) checkout = revs and revs[-1] or branch return url, (revs or []) + [branch], checkout schemes = { 'bundle': bundlerepo, 'file': _local, 'http': httprepo, 'https': httprepo, 'ssh': sshrepo, 'static-http': statichttprepo, } def _lookup(path): scheme = 'file' if path: c = path.find(':') if c > 0: scheme = path[:c] thing = schemes.get(scheme) or schemes['file'] try: return thing(path) except TypeError: return thing def islocal(repo): '''return true if repo or path is local''' if isinstance(repo, str): try: return _lookup(repo).islocal(repo) except AttributeError: return False return repo.local() def repository(ui, path='', create=False): """return a repository object for the specified path""" repo = _lookup(path).instance(ui, path, create) ui = getattr(repo, "ui", ui) for name, module in extensions.extensions(): hook = getattr(module, 'reposetup', None) if hook: hook(ui, repo) return repo def defaultdest(source): '''return default destination of clone if none is given''' return os.path.basename(os.path.normpath(source)) def localpath(path): if path.startswith('file://localhost/'): return path[16:] if path.startswith('file://'): return path[7:] if path.startswith('file:'): return path[5:] return path def share(ui, source, dest=None, update=True): '''create a shared repository''' if not islocal(source): raise util.Abort(_('can only share local repositories')) if not dest: dest = os.path.basename(source) else: dest = ui.expandpath(dest) if isinstance(source, str): origsource = ui.expandpath(source) source, rev, checkout = parseurl(origsource, '') srcrepo = repository(ui, source) else: srcrepo = source origsource = source = srcrepo.url() checkout = None sharedpath = srcrepo.sharedpath # if our source is already sharing root = os.path.realpath(dest) roothg = os.path.join(root, '.hg') if os.path.exists(roothg): raise util.Abort(_('destination already exists')) if not os.path.isdir(root): os.mkdir(root) os.mkdir(roothg) requirements = '' try: requirements = srcrepo.opener('requires').read() except IOError, inst: if inst.errno != errno.ENOENT: raise requirements += 'shared\n' file(os.path.join(roothg, 'requires'), 'w').write(requirements) file(os.path.join(roothg, 'sharedpath'), 'w').write(sharedpath) default = srcrepo.ui.config('paths', 'default') if default: f = file(os.path.join(roothg, 'hgrc'), 'w') f.write('[paths]\ndefault = %s\n' % default) f.close() r = repository(ui, root) if update: r.ui.status(_("updating working directory\n")) if update is not True: checkout = update for test in (checkout, 'default', 'tip'): try: uprev = r.lookup(test) break except LookupError: continue _update(r, uprev) def clone(ui, source, dest=None, pull=False, rev=None, update=True, stream=False): """Make a copy of an existing repository. Create a copy of an existing repository in a new directory. The source and destination are URLs, as passed to the repository function. Returns a pair of repository objects, the source and newly created destination. The location of the source is added to the new repository's .hg/hgrc file, as the default to be used for future pulls and pushes. If an exception is raised, the partly cloned/updated destination repository will be deleted. Arguments: source: repository object or URL dest: URL of destination repository to create (defaults to base name of source repository) pull: always pull from source repository, even in local case stream: stream raw data uncompressed from repository (fast over LAN, slow over WAN) rev: revision to clone up to (implies pull=True) update: update working directory after clone completes, if destination is local repository (True means update to default rev, anything else is treated as a revision) """ if isinstance(source, str): origsource = ui.expandpath(source) source, rev, checkout = parseurl(origsource, rev) src_repo = repository(ui, source) else: src_repo = source origsource = source = src_repo.url() checkout = rev and rev[-1] or None if dest is None: dest = defaultdest(source) ui.status(_("destination directory: %s\n") % dest) else: dest = ui.expandpath(dest) dest = localpath(dest) source = localpath(source) if os.path.exists(dest): if not os.path.isdir(dest): raise util.Abort(_("destination '%s' already exists") % dest) elif os.listdir(dest): raise util.Abort(_("destination '%s' is not empty") % dest) class DirCleanup(object): def __init__(self, dir_): self.rmtree = shutil.rmtree self.dir_ = dir_ def close(self): self.dir_ = None def cleanup(self): if self.dir_: self.rmtree(self.dir_, True) src_lock = dest_lock = dir_cleanup = None try: if islocal(dest): dir_cleanup = DirCleanup(dest) abspath = origsource copy = False if src_repo.cancopy() and islocal(dest): abspath = os.path.abspath(util.drop_scheme('file', origsource)) copy = not pull and not rev if copy: try: # we use a lock here because if we race with commit, we # can end up with extra data in the cloned revlogs that's # not pointed to by changesets, thus causing verify to # fail src_lock = src_repo.lock(wait=False) except error.LockError: copy = False if copy: src_repo.hook('preoutgoing', throw=True, source='clone') hgdir = os.path.realpath(os.path.join(dest, ".hg")) if not os.path.exists(dest): os.mkdir(dest) else: # only clean up directories we create ourselves dir_cleanup.dir_ = hgdir try: dest_path = hgdir os.mkdir(dest_path) except OSError, inst: if inst.errno == errno.EEXIST: dir_cleanup.close() raise util.Abort(_("destination '%s' already exists") % dest) raise for f in src_repo.store.copylist(): src = os.path.join(src_repo.path, f) dst = os.path.join(dest_path, f) dstbase = os.path.dirname(dst) if dstbase and not os.path.exists(dstbase): os.mkdir(dstbase) if os.path.exists(src): if dst.endswith('data'): # lock to avoid premature writing to the target dest_lock = lock.lock(os.path.join(dstbase, "lock")) util.copyfiles(src, dst) # we need to re-init the repo after manually copying the data # into it dest_repo = repository(ui, dest) src_repo.hook('outgoing', source='clone', node='0'*40) else: try: dest_repo = repository(ui, dest, create=True) except OSError, inst: if inst.errno == errno.EEXIST: dir_cleanup.close() raise util.Abort(_("destination '%s' already exists") % dest) raise revs = None if rev: if 'lookup' not in src_repo.capabilities: raise util.Abort(_("src repository does not support " "revision lookup and so doesn't " "support clone by revision")) revs = [src_repo.lookup(r) for r in rev] checkout = revs[0] if dest_repo.local(): dest_repo.clone(src_repo, heads=revs, stream=stream) elif src_repo.local(): src_repo.push(dest_repo, revs=revs) else: raise util.Abort(_("clone from remote to remote not supported")) if dir_cleanup: dir_cleanup.close() if dest_repo.local(): fp = dest_repo.opener("hgrc", "w", text=True) fp.write("[paths]\n") fp.write("default = %s\n" % abspath) fp.close() dest_repo.ui.setconfig('paths', 'default', abspath) if update: dest_repo.ui.status(_("updating working directory\n")) if update is not True: checkout = update for test in (checkout, 'default', 'tip'): try: uprev = dest_repo.lookup(test) break except: continue _update(dest_repo, uprev) return src_repo, dest_repo finally: release(src_lock, dest_lock) if dir_cleanup is not None: dir_cleanup.cleanup() def _showstats(repo, stats): stats = ((stats[0], _("updated")), (stats[1], _("merged")), (stats[2], _("removed")), (stats[3], _("unresolved"))) note = ", ".join([_("%d files %s") % s for s in stats]) repo.ui.status("%s\n" % note) def update(repo, node): """update the working directory to node, merging linear changes""" stats = _merge.update(repo, node, False, False, None) _showstats(repo, stats) if stats[3]: repo.ui.status(_("use 'hg resolve' to retry unresolved file merges\n")) return stats[3] > 0 # naming conflict in clone() _update = update def clean(repo, node, show_stats=True): """forcibly switch the working directory to node, clobbering changes""" stats = _merge.update(repo, node, False, True, None) if show_stats: _showstats(repo, stats) return stats[3] > 0 def merge(repo, node, force=None, remind=True): """branch merge with node, resolving changes""" stats = _merge.update(repo, node, True, force, False) _showstats(repo, stats) if stats[3]: repo.ui.status(_("use 'hg resolve' to retry unresolved file merges " "or 'hg up --clean' to abandon\n")) elif remind: repo.ui.status(_("(branch merge, don't forget to commit)\n")) return stats[3] > 0 def revert(repo, node, choose): """revert changes to revision in node without updating dirstate""" return _merge.update(repo, node, False, True, choose)[3] > 0 def verify(repo): """verify the consistency of a repository""" return _verify.verify(repo)