hgext/obsolete.py
author Martin von Zweigbergk <martinvonz@google.com>
Thu, 12 Jan 2017 13:47:49 -0800
changeset 1782 a046e78c3290
parent 1757 86e71a0b3319
permissions -rw-r--r--
fold: require --from flag for folding revisions to working copy It's very easy to think that "hg fold 4::6" will fold exactly those revisions. In reality, it will fold those *and* any revisions between them and the working copy. To prevent users from making that mistake, require the use of a new --from flag for folding revisions from the given set to the working copy. With this change, I'm sure some users will be surprised that the command can not be run without either --from or --exact, but at least the consequences will be smaller (the command simply aborts and the user can try again).
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# Copyright 2011 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
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#                Logilab SA        <contact@logilab.fr>
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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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"""Deprecated extension that formerly introduced "Changeset Obsolescence".
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This concept is now partially in Mercurial core (starting with Mercurial 2.3).
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The remaining logic has been grouped with the evolve extension.
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Some code remains in this extensions to detect and convert prehistoric format
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of obsolete marker than early user may have create. Keep it enabled if you
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were such user.
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"""
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from mercurial import error
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try:
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    from mercurial import obsolete
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except ImportError:
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    raise error.Abort('Obsolete extension requires Mercurial 2.3 (or later)')
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import sys
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import json
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from mercurial import cmdutil
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from mercurial.i18n import _
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from mercurial.node import bin, nullid
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from mercurial import util
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#####################################################################
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### Older format management                                       ###
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#####################################################################
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# Code related to detection and management of older legacy format never
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# handled by core
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def reposetup(ui, repo):
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    """Detect that a repo still contains some old obsolete format
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    """
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    if not repo.local():
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        return
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    evolveopts = ui.configlist('experimental', 'evolution')
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    if not evolveopts:
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        evolveopts = 'all'
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        ui.setconfig('experimental', 'evolution', evolveopts)
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    for arg in sys.argv:
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        if 'debugc' in arg:
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            break
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    else:
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        data = repo.opener.tryread('obsolete-relations')
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        if not data:
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            data = repo.svfs.tryread('obsoletemarkers')
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        if data:
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            raise error.Abort('old format of obsolete marker detected!\n'
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                              'run `hg debugconvertobsolete` once.')
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def _obsdeserialize(flike):
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    """read a file like object serialized with _obsserialize
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    this deserialize into a {subject -> objects} mapping
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    this was the very first format ever."""
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    rels = {}
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    for line in flike:
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        subhex, objhex = line.split()
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        subnode = bin(subhex)
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        if subnode == nullid:
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            subnode = None
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        rels.setdefault(subnode, set()).add(bin(objhex))
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    return rels
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cmdtable = {}
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command = cmdutil.command(cmdtable)
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@command('debugconvertobsolete', [], '')
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def cmddebugconvertobsolete(ui, repo):
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    """import markers from an .hg/obsolete-relations file"""
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    cnt = 0
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    err = 0
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    l = repo.lock()
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    some = False
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    try:
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        unlink = []
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        tr = repo.transaction('convert-obsolete')
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        try:
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            repo._importoldobsolete = True
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            store = repo.obsstore
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            ### very first format
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            try:
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                f = repo.opener('obsolete-relations')
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                try:
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                    some = True
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                    for line in f:
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                        subhex, objhex = line.split()
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                        suc = bin(subhex)
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                        prec = bin(objhex)
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                        sucs = (suc==nullid) and [] or [suc]
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                        meta = {
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                            'date':  '%i %i' % util.makedate(),
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                            'user': ui.username(),
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                            }
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                        try:
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                            store.create(tr, prec, sucs, 0, metadata=meta)
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                            cnt += 1
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                        except ValueError:
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                            repo.ui.write_err("invalid old marker line: %s"
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                                              % (line))
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                            err += 1
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                finally:
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                    f.close()
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                unlink.append(repo.join('obsolete-relations'))
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            except IOError:
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                pass
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            ### second (json) format
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            data = repo.svfs.tryread('obsoletemarkers')
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            if data:
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                some = True
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                for oldmark in json.loads(data):
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                    del oldmark['id']  # dropped for now
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                    del oldmark['reason']  # unused until then
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                    oldobject = str(oldmark.pop('object'))
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                    oldsubjects = [str(s) for s in oldmark.pop('subjects', [])]
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                    LOOKUP_ERRORS = (error.RepoLookupError, error.LookupError)
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                    if len(oldobject) != 40:
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                        try:
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                            oldobject = repo[oldobject].node()
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                        except LOOKUP_ERRORS:
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                            pass
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                    if any(len(s) != 40 for s in oldsubjects):
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                        try:
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                            oldsubjects = [repo[s].node() for s in oldsubjects]
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                        except LOOKUP_ERRORS:
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                            pass
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361
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                    oldmark['date'] = '%i %i' % tuple(oldmark['date'])
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                    meta = dict((k.encode('utf-8'), v.encode('utf-8'))
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                                 for k, v in oldmark.iteritems())
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                    try:
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                        succs = [bin(n) for n in oldsubjects]
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                        succs = [n for n in succs if n != nullid]
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                        store.create(tr, bin(oldobject), succs,
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                                     0, metadata=meta)
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                        cnt += 1
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                    except ValueError:
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                        repo.ui.write_err("invalid marker %s -> %s\n"
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                                     % (oldobject, oldsubjects))
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                        err += 1
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                unlink.append(repo.sjoin('obsoletemarkers'))
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            tr.close()
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            for path in unlink:
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                util.unlink(path)
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        finally:
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            tr.release()
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    finally:
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        del repo._importoldobsolete
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        l.release()
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    if not some:
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        ui.warn(_('nothing to do\n'))
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    ui.status('%i obsolete marker converted\n' % cnt)
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    if err:
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        ui.write_err('%i conversion failed. check you graph!\n' % err)