hgext/fetch.py
author Pierre-Yves David <pierre-yves.david@octobus.net>
Thu, 02 Feb 2023 17:38:14 +0100
changeset 50615 9e69d9d6f4cf
parent 49731 c130d2d8d775
child 50876 eeffc9687c9a
permissions -rw-r--r--
safehasattr: pass attribute name as string instead of bytes This is a step toward replacing `util.safehasattr` usage with plain `hasattr`. The builtin function behave poorly in Python2 but this was fixed in Python3. These change are done one by one as they tend to have a small odd to trigger puzzling breackage.
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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 short
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from mercurial import (
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    cmdutil,
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    error,
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    exchange,
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    hg,
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    lock,
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    pycompat,
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    registrar,
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)
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from mercurial.utils import (
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    dateutil,
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    urlutil,
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)
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release = lock.release
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cmdtable = {}
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command = registrar.command(cmdtable)
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# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
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# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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# be specifying the version(s) of Mercurial they are tested with, or
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# leave the attribute unspecified.
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testedwith = b'ships-with-hg-core'
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@command(
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    b'fetch',
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    [
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        (
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            b'r',
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            b'rev',
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            [],
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            _(b'a specific revision you would like to pull'),
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            _(b'REV'),
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        ),
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        (b'', b'edit', None, _(b'invoke editor on commit messages')),
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        (b'', b'force-editor', None, _(b'edit commit message (DEPRECATED)')),
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        (b'', b'switch-parent', None, _(b'switch parents when merging')),
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    ]
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    + cmdutil.commitopts
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    + cmdutil.commitopts2
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    + cmdutil.remoteopts,
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    _(b'hg fetch [SOURCE]'),
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    helpcategory=command.CATEGORY_REMOTE_REPO_MANAGEMENT,
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)
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def fetch(ui, repo, source=b'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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    opts = pycompat.byteskwargs(opts)
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    date = opts.get(b'date')
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    if date:
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        opts[b'date'] = dateutil.parsedate(date)
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    parent = repo.dirstate.p1()
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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 error.Abort(
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            _(b'working directory not at branch tip'),
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            hint=_(b"use 'hg update' to check out branch tip"),
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        )
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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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        cmdutil.bailifchanged(repo)
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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 error.Abort(
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                _(
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                    b'multiple heads in this branch '
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                    b'(use "hg heads ." and "hg merge" to merge)'
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                )
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            )
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        path = urlutil.get_unique_pull_path_obj(b'fetch', ui, source)
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        other = hg.peer(repo, opts, path)
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        ui.status(_(b'pulling from %s\n') % urlutil.hidepassword(path.loc))
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        revs = None
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        if opts[b'rev']:
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            try:
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                revs = [other.lookup(rev) for rev in opts[b'rev']]
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            except error.CapabilityError:
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                err = _(
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                    b"other repository doesn't support revision lookup, "
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                    b"so a rev cannot be specified."
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                )
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                raise error.Abort(err)
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   124
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        # Are there any changes at all?
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        modheads = exchange.pull(repo, other, heads=revs).cgresult
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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(
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                _(
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                    b'not merging with %d other new branch heads '
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                    b'(use "hg heads ." and "hg merge" to merge them)\n'
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                )
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                % (len(newheads) - 1)
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            )
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            return 1
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        if not newheads:
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            return 0
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   158
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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[b'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(
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                    _(b'updating to %d:%s\n')
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                    % (repo.changelog.rev(firstparent), short(firstparent))
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                )
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            hg.clean(repo, firstparent)
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            p2ctx = repo[secondparent]
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            ui.status(
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                _(b'merging with %d:%s\n') % (p2ctx.rev(), short(secondparent))
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   177
            )
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            err = hg.merge(p2ctx, remind=False)
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   179
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        if not err:
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parents: 8894
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   181
            # we don't translate commit messages
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   182
            message = cmdutil.logmessage(ui, opts) or (
46907
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Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 45942
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   183
                b'Automated merge with %s' % urlutil.removeauth(other.url())
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   184
            )
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            editopt = opts.get(b'edit') or opts.get(b'force_editor')
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   186
            editor = cmdutil.getcommiteditor(edit=editopt, editform=b'fetch')
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            n = repo.commit(
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   188
                message, opts[b'user'], opts[b'date'], editor=editor
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   189
            )
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   190
            ui.status(
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   191
                _(b'new changeset %d:%s merges remote changes with local\n')
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   192
                % (repo.changelog.rev(n), short(n))
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diff changeset
   193
            )
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diff changeset
   194
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   195
        return err
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   196
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2824
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   197
    finally:
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Ronny Pfannschmidt <Ronny.Pfannschmidt@gmx.de>
parents: 7991
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   198
        release(lock, wlock)