Mercurial > hg > mercurial-crew-with-dirclash
view hgext/fetch.py @ 5369:7530334bf301
revlog: generate trivial deltas against null revision
To avoid extra memory usage and performance issues with large files,
generate a trivial delta header for deltas against the null revision
rather than calling the usual delta generator.
We append the delta header to meta rather than prepending it to data
to avoid a large allocate and copy.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Wed, 03 Oct 2007 17:17:27 -0500 |
parents | c80af96943aa |
children |
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# 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, incorporated herein by reference. from mercurial.i18n import _ from mercurial.node import * from mercurial import commands, cmdutil, hg, node, util 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 head, the head is automatically merged, and the result of the merge is committed. Otherwise, the working directory is updated.''' def postincoming(other, modheads): if modheads == 0: return 0 if modheads == 1: return hg.clean(repo, repo.changelog.tip()) newheads = repo.heads(parent) newchildren = [n for n in repo.heads(parent) if n != parent] newparent = parent if newchildren: newparent = newchildren[0] hg.clean(repo, newparent) newheads = [n for n in repo.heads() if n != newparent] err = False if newheads: ui.status(_('merging with new head %d:%s\n') % (repo.changelog.rev(newheads[0]), short(newheads[0]))) err = hg.merge(repo, newheads[0], remind=False) if not err and len(newheads) > 1: ui.status(_('not merging with %d other new heads ' '(use "hg heads" and "hg merge" to merge them)') % (len(newheads) - 1)) if not err: mod, add, rem = repo.status()[:3] message = (cmdutil.logmessage(opts) or (_('Automated merge with %s') % other.url())) n = repo.commit(mod + add + rem, message, opts['user'], opts['date'], force_editor=opts.get('force_editor')) ui.status(_('new changeset %d:%s merges remote changes ' 'with local\n') % (repo.changelog.rev(n), short(n))) def pull(): cmdutil.setremoteconfig(ui, opts) other = hg.repository(ui, ui.expandpath(source)) ui.status(_('pulling from %s\n') % ui.expandpath(source)) revs = None if opts['rev'] and not other.local(): raise util.Abort(_("fetch -r doesn't work for remote repositories yet")) elif opts['rev']: revs = [other.lookup(rev) for rev in opts['rev']] modheads = repo.pull(other, heads=revs) return postincoming(other, modheads) parent, p2 = repo.dirstate.parents() if parent != repo.changelog.tip(): raise util.Abort(_('working dir not at tip ' '(use "hg update" to check out tip)')) if p2 != nullid: raise util.Abort(_('outstanding uncommitted merge')) wlock = lock = None try: wlock = repo.wlock() lock = repo.lock() mod, add, rem = repo.status()[:3] if mod or add or rem: raise util.Abort(_('outstanding uncommitted changes')) if len(repo.heads()) > 1: raise util.Abort(_('multiple heads in this repository ' '(use "hg heads" and "hg merge" to merge)')) return pull() finally: del lock, wlock cmdtable = { 'fetch': (fetch, [('r', 'rev', [], _('a specific revision you would like to pull')), ('f', 'force-editor', None, _('edit commit message')), ] + commands.commitopts + commands.commitopts2 + commands.remoteopts, _('hg fetch [SOURCE]')), }