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# fetch.py - pull and merge remote changes
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#
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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from mercurial.i18n import _
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from mercurial.node import *
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from mercurial import commands, cmdutil, hg, node, util
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def fetch(ui, repo, source='default', **opts):
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'''Pull changes from a remote repository, merge new changes if needed.
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This finds all changes from the repository at the specified path
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or URL and adds them to the local repository.
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If the pulled changes add a new head, the head is automatically
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merged, and the result of the merge is committed. Otherwise, the
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working directory is updated.'''
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def postincoming(other, modheads):
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if modheads == 0:
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return 0
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if modheads == 1:
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return hg.clean(repo, repo.changelog.tip(), wlock=wlock)
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newheads = repo.heads(parent)
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newchildren = [n for n in repo.heads(parent) if n != parent]
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newparent = parent
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if newchildren:
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newparent = newchildren[0]
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hg.clean(repo, newparent, wlock=wlock)
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newheads = [n for n in repo.heads() if n != newparent]
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err = False
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if newheads:
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ui.status(_('merging with new head %d:%s\n') %
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(repo.changelog.rev(newheads[0]), short(newheads[0])))
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err = hg.merge(repo, newheads[0], remind=False, wlock=wlock)
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if not err and len(newheads) > 1:
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ui.status(_('not merging with %d other new heads '
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'(use "hg heads" and "hg merge" to merge them)') %
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(len(newheads) - 1))
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if not err:
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mod, add, rem = repo.status(wlock=wlock)[:3]
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message = (cmdutil.logmessage(opts) or
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(_('Automated merge with %s') % other.url()))
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n = repo.commit(mod + add + rem, message,
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opts['user'], opts['date'], lock=lock, wlock=wlock,
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force_editor=opts.get('force_editor'))
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ui.status(_('new changeset %d:%s merges remote changes '
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'with local\n') % (repo.changelog.rev(n),
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short(n)))
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def pull():
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cmdutil.setremoteconfig(ui, opts)
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other = hg.repository(ui, ui.expandpath(source))
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ui.status(_('pulling from %s\n') % ui.expandpath(source))
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revs = None
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if opts['rev'] and not other.local():
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raise util.Abort(_("fetch -r doesn't work for remote repositories yet"))
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elif opts['rev']:
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revs = [other.lookup(rev) for rev in opts['rev']]
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modheads = repo.pull(other, heads=revs, lock=lock)
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return postincoming(other, modheads)
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parent, p2 = repo.dirstate.parents()
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if parent != repo.changelog.tip():
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raise util.Abort(_('working dir not at tip '
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'(use "hg update" to check out tip)'))
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if p2 != nullid:
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raise util.Abort(_('outstanding uncommitted merge'))
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wlock = repo.wlock()
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lock = repo.lock()
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try:
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mod, add, rem = repo.status(wlock=wlock)[:3]
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if mod or add or rem:
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raise util.Abort(_('outstanding uncommitted changes'))
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if len(repo.heads()) > 1:
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raise util.Abort(_('multiple heads in this repository '
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'(use "hg heads" and "hg merge" to merge)'))
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return pull()
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finally:
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lock.release()
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wlock.release()
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cmdtable = {
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'fetch':
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(fetch,
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[('e', 'ssh', '', _('specify ssh command to use')),
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('m', 'message', '', _('use <text> as commit message')),
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('l', 'logfile', '', _('read the commit message from <file>')),
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('d', 'date', '', _('record datecode as commit date')),
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('u', 'user', '', _('record user as commiter')),
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('r', 'rev', [], _('a specific revision you would like to pull')),
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('f', 'force-editor', None, _('edit commit message')),
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('', 'remotecmd', '', _('hg command to run on the remote side'))],
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_('hg fetch [SOURCE]')),
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}
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