hgext/fetch.py
author Christian Ebert <blacktrash@gmx.net>
Fri, 10 Aug 2012 20:37:20 +0100
changeset 17755 bededd3f0735
parent 16926 cf2156932f75
child 21247 b1e64c6720d8
permissions -rw-r--r--
templatefilters: avoid traceback caused by bogus date input (issue3344) Wrap datefilters which split date texts with util.parsedate. We do not abort, as the bogus date must have been given by the user.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 of the
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# GNU General Public License version 2 or any later version.
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'''pull, update and merge in one command (DEPRECATED)'''
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from mercurial.i18n import _
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from mercurial.node import nullid, short
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from mercurial import commands, cmdutil, hg, util, error
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from mercurial.lock import release
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testedwith = 'internal'
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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 branch head, the head is
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    automatically merged, and the result of the merge is committed.
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    Otherwise, the working directory is updated to include the new
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    changes.
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    When a merge is needed, the working directory is first updated to
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    the newly pulled changes. Local changes are then merged into the
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    pulled changes. To switch the merge order, use --switch-parent.
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    See :hg:`help dates` for a list of formats valid for -d/--date.
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    Returns 0 on success.
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    '''
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    date = opts.get('date')
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    if date:
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        opts['date'] = util.parsedate(date)
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    parent, p2 = repo.dirstate.parents()
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    branch = repo.dirstate.branch()
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    try:
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        branchnode = repo.branchtip(branch)
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    except error.RepoLookupError:
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        branchnode = None
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    if parent != branchnode:
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        raise util.Abort(_('working dir not at branch tip '
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                           '(use "hg update" to check out branch tip)'))
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    if p2 != nullid:
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        raise util.Abort(_('outstanding uncommitted merge'))
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    wlock = lock = None
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    try:
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        wlock = repo.wlock()
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        lock = repo.lock()
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        mod, add, rem, del_ = repo.status()[:4]
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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 del_:
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            raise util.Abort(_('working directory is missing some files'))
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        bheads = repo.branchheads(branch)
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        bheads = [head for head in bheads if len(repo[head].children()) == 0]
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        if len(bheads) > 1:
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            raise util.Abort(_('multiple heads in this branch '
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                               '(use "hg heads ." and "hg merge" to merge)'))
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        other = hg.peer(repo, opts, ui.expandpath(source))
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        ui.status(_('pulling from %s\n') %
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                  util.hidepassword(ui.expandpath(source)))
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        revs = None
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        if opts['rev']:
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            try:
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                revs = [other.lookup(rev) for rev in opts['rev']]
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            except error.CapabilityError:
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                err = _("other repository doesn't support revision lookup, "
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                        "so a rev cannot be specified.")
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                raise util.Abort(err)
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        # Are there any changes at all?
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        modheads = repo.pull(other, heads=revs)
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        if modheads == 0:
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            return 0
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        # Is this a simple fast-forward along the current branch?
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        newheads = repo.branchheads(branch)
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        newchildren = repo.changelog.nodesbetween([parent], newheads)[2]
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        if len(newheads) == 1 and len(newchildren):
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            if newchildren[0] != parent:
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                return hg.update(repo, newchildren[0])
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            else:
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                return 0
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        # Are there more than one additional branch heads?
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        newchildren = [n for n in newchildren 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)
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        newheads = [n for n in newheads if n != newparent]
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        if len(newheads) > 1:
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            ui.status(_('not merging with %d other new branch heads '
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                        '(use "hg heads ." and "hg merge" to merge them)\n') %
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                      (len(newheads) - 1))
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            return 1
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        if not newheads:
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            return 0
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        # Otherwise, let's merge.
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        err = False
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        if newheads:
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            # By default, we consider the repository we're pulling
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            # *from* as authoritative, so we merge our changes into
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            # theirs.
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            if opts['switch_parent']:
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                firstparent, secondparent = newparent, newheads[0]
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            else:
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                firstparent, secondparent = newheads[0], newparent
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                ui.status(_('updating to %d:%s\n') %
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                          (repo.changelog.rev(firstparent),
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                           short(firstparent)))
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            hg.clean(repo, firstparent)
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            ui.status(_('merging with %d:%s\n') %
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                      (repo.changelog.rev(secondparent), short(secondparent)))
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            err = hg.merge(repo, secondparent, remind=False)
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        if not err:
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            # we don't translate commit messages
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            message = (cmdutil.logmessage(ui, opts) or
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                       ('Automated merge with %s' %
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                        util.removeauth(other.url())))
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            editor = cmdutil.commiteditor
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            if opts.get('force_editor') or opts.get('edit'):
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                editor = cmdutil.commitforceeditor
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            n = repo.commit(message, opts['user'], opts['date'], editor=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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        return err
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    finally:
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        release(lock, wlock)
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cmdtable = {
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    'fetch':
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        (fetch,
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        [('r', 'rev', [],
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          _('a specific revision you would like to pull'), _('REV')),
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         ('e', 'edit', None, _('edit commit message')),
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         ('', 'force-editor', None, _('edit commit message (DEPRECATED)')),
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         ('', 'switch-parent', None, _('switch parents when merging')),
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        ] + commands.commitopts + commands.commitopts2 + commands.remoteopts,
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        _('hg fetch [SOURCE]')),
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}