ref: fc2a3496feb277add577903425058c5ca1f2a9af
dir: /sys/lib/python/hgext/fetch.py/
# fetch.py - pull and merge remote changes # # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2, incorporated herein by reference. '''pull, update and merge in one command''' from mercurial.i18n import _ from mercurial.node import nullid, short from mercurial import commands, cmdutil, hg, util, url, error from mercurial.lock import release def fetch(ui, repo, source='default', **opts): '''pull changes from a remote repository, merge new changes if needed. This finds all changes from the repository at the specified path or URL and adds them to the local repository. If the pulled changes add a new branch head, the head is automatically merged, and the result of the merge is committed. Otherwise, the working directory is updated to include the new changes. When a merge occurs, the newly pulled changes are assumed to be "authoritative". The head of the new changes is used as the first parent, with local changes as the second. To switch the merge order, use --switch-parent. See 'hg help dates' for a list of formats valid for -d/--date. ''' date = opts.get('date') if date: opts['date'] = util.parsedate(date) parent, p2 = repo.dirstate.parents() branch = repo.dirstate.branch() branchnode = repo.branchtags().get(branch) if parent != branchnode: raise util.Abort(_('working dir not at branch tip ' '(use "hg update" to check out branch tip)')) if p2 != nullid: raise util.Abort(_('outstanding uncommitted merge')) wlock = lock = None try: wlock = repo.wlock() lock = repo.lock() mod, add, rem, del_ = repo.status()[:4] if mod or add or rem: raise util.Abort(_('outstanding uncommitted changes')) if del_: raise util.Abort(_('working directory is missing some files')) bheads = repo.branchheads(branch) bheads = [head for head in bheads if len(repo[head].children()) == 0] if len(bheads) > 1: raise util.Abort(_('multiple heads in this branch ' '(use "hg heads ." and "hg merge" to merge)')) other = hg.repository(cmdutil.remoteui(repo, opts), ui.expandpath(source)) ui.status(_('pulling from %s\n') % url.hidepassword(ui.expandpath(source))) revs = None if opts['rev']: try: revs = [other.lookup(rev) for rev in opts['rev']] except error.CapabilityError: err = _("Other repository doesn't support revision lookup, " "so a rev cannot be specified.") raise util.Abort(err) # Are there any changes at all? modheads = repo.pull(other, heads=revs) if modheads == 0: return 0 # Is this a simple fast-forward along the current branch? newheads = repo.branchheads(branch) newheads = [head for head in newheads if len(repo[head].children()) == 0] newchildren = repo.changelog.nodesbetween([parent], newheads)[2] if len(newheads) == 1: if newchildren[0] != parent: return hg.clean(repo, newchildren[0]) else: return # Are there more than one additional branch heads? newchildren = [n for n in newchildren if n != parent] newparent = parent if newchildren: newparent = newchildren[0] hg.clean(repo, newparent) newheads = [n for n in newheads if n != newparent] if len(newheads) > 1: ui.status(_('not merging with %d other new branch heads ' '(use "hg heads ." and "hg merge" to merge them)\n') % (len(newheads) - 1)) return # Otherwise, let's merge. err = False if newheads: # By default, we consider the repository we're pulling # *from* as authoritative, so we merge our changes into # theirs. if opts['switch_parent']: firstparent, secondparent = newparent, newheads[0] else: firstparent, secondparent = newheads[0], newparent ui.status(_('updating to %d:%s\n') % (repo.changelog.rev(firstparent), short(firstparent))) hg.clean(repo, firstparent) ui.status(_('merging with %d:%s\n') % (repo.changelog.rev(secondparent), short(secondparent))) err = hg.merge(repo, secondparent, remind=False) if not err: # we don't translate commit messages message = (cmdutil.logmessage(opts) or ('Automated merge with %s' % url.removeauth(other.url()))) editor = cmdutil.commiteditor if opts.get('force_editor') or opts.get('edit'): editor = cmdutil.commitforceeditor n = repo.commit(message, opts['user'], opts['date'], editor=editor) ui.status(_('new changeset %d:%s merges remote changes ' 'with local\n') % (repo.changelog.rev(n), short(n))) finally: release(lock, wlock) cmdtable = { 'fetch': (fetch, [('r', 'rev', [], _('a specific revision you would like to pull')), ('e', 'edit', None, _('edit commit message')), ('', 'force-editor', None, _('edit commit message (DEPRECATED)')), ('', 'switch-parent', None, _('switch parents when merging')), ] + commands.commitopts + commands.commitopts2 + commands.remoteopts, _('hg fetch [SOURCE]')), }