+
−# stack.py - code related to stack workflow
+
−#
+
−# This software may be used and distributed according to the terms of the
+
−# GNU General Public License version 2 or any later version.
+
−from mercurial.i18n import _
+
−from mercurial import (
+
−    destutil,
+
−    context,
+
−    error,
+
−    node,
+
−    util,
+
−)
+
−from .evolvebits import builddependencies, _orderrevs, _singlesuccessor
+
−
+
−short = node.short
+
−
+
−# TODO: compat
+
−
+
−if not util.safehasattr(context.basectx, 'orphan'):
+
−    context.basectx.orphan = context.basectx.unstable
+
−
+
−if not util.safehasattr(context.basectx, 'isunstable'):
+
−    context.basectx.isunstable = context.basectx.troubled
+
−
+
−def getstack(repo, branch=None, topic=None):
+
−    # XXX need sorting
+
−    if topic is not None and branch is not None:
+
−        raise error.ProgrammingError('both branch and topic specified (not defined yet)')
+
−    elif topic is not None:
+
−        trevs = repo.revs("topic(%s) - obsolete()", topic)
+
−    elif branch is not None:
+
−        trevs = repo.revs("branch(%s) - public() - obsolete() - topic()", branch)
+
−    else:
+
−        raise error.ProgrammingError('neither branch and topic specified (not defined yet)')
+
−    revs = _orderrevs(repo, trevs)
+
−    if revs:
+
−        pt1 = repo[revs[0]].p1()
+
−        if pt1.obsolete():
+
−            pt1 = repo[_singlesuccessor(repo, pt1)]
+
−        revs.insert(0, pt1.rev())
+
−    return revs
+
−
+
−def labelsgen(prefix, labelssuffix):
+
−    """ Takes a label prefix and a list of suffixes. Returns a string of the prefix
+
−    formatted with each suffix separated with a space.
+
−    """
+
−    return ' '.join(prefix % suffix for suffix in labelssuffix)
+
−
+
−def showstack(ui, repo, branch=None, topic=None, opts=None):
+
−    if opts is None:
+
−        opts = {}
+
−
+
−    if topic is not None and branch is not None:
+
−        msg = 'both branch and topic specified [%s]{%s}(not defined yet)'
+
−        msg %= (branch, topic)
+
−        raise error.ProgrammingError(msg)
+
−    elif topic is not None:
+
−        prefix = 't'
+
−        if topic not in repo.topics:
+
−            raise error.Abort(_('cannot resolve "%s": no such topic found') % topic)
+
−    elif branch is not None:
+
−        prefix = 'b'
+
−    else:
+
−        raise error.ProgrammingError('neither branch and topic specified (not defined yet)')
+
−
+
−    fm = ui.formatter('topicstack', opts)
+
−    prev = None
+
−    entries = []
+
−    idxmap = {}
+
−
+
−    label = 'topic'
+
−    if topic == repo.currenttopic:
+
−        label = 'topic.active'
+
−
+
−    data = stackdata(repo, branch=branch, topic=topic)
+
−    if topic is not None:
+
−        fm.plain(_('### topic: %s')
+
−                 % ui.label(topic, label),
+
−                 label='topic.stack.summary.topic')
+
−
+
−        if 1 < data['headcount']:
+
−            fm.plain(' (')
+
−            fm.plain('%d heads' % data['headcount'],
+
−                     label='topic.stack.summary.headcount.multiple')
+
−            fm.plain(')')
+
−        fm.plain('\n')
+
−    fm.plain(_('### branch: %s')
+
−             % '+'.join(data['branches']), # XXX handle multi branches
+
−             label='topic.stack.summary.branches')
+
−    if topic is None:
+
−        if 1 < data['headcount']:
+
−            fm.plain(' (')
+
−            fm.plain('%d heads' % data['headcount'],
+
−                     label='topic.stack.summary.headcount.multiple')
+
−            fm.plain(')')
+
−    else:
+
−        if data['behindcount'] == -1:
+
−            fm.plain(', ')
+
−            fm.plain('ambigious rebase destination', label='topic.stack.summary.behinderror')
+
−        elif data['behindcount']:
+
−            fm.plain(', ')
+
−            fm.plain('%d behind' % data['behindcount'], label='topic.stack.summary.behindcount')
+
−    fm.plain('\n')
+
−
+
−    for idx, r in enumerate(getstack(repo, branch=branch, topic=topic), 0):
+
−        ctx = repo[r]
+
−        # special case for t0, b0 as it's hard to plugin into rest of the logic
+
−        if idx == 0:
+
−            # t0, b0 can be None
+
−            if r == -1:
+
−                continue
+
−            entries.append((idx, False, ctx))
+
−            prev = ctx.rev()
+
−            continue
+
−        p1 = ctx.p1()
+
−        if p1.obsolete():
+
−            p1 = repo[_singlesuccessor(repo, p1)]
+
−        if p1.rev() != prev and p1.node() != node.nullid:
+
−            entries.append((idxmap.get(p1.rev()), False, p1))
+
−        entries.append((idx, True, ctx))
+
−        idxmap[ctx.rev()] = idx
+
−        prev = r
+
−
+
−    # super crude initial version
+
−    for idx, isentry, ctx in entries[::-1]:
+
−
+
−        states = []
+
−        iscurrentrevision = repo.revs('%d and parents()', ctx.rev())
+
−
+
−        if not isentry:
+
−            symbol = '^'
+
−            # "base" is kind of a "ghost" entry
+
−            # skip other label for them (no current, no unstable)
+
−            states = ['base']
+
−        elif ctx.orphan():
+
−            # current revision can be unstable also, so in that case show both
+
−            # the states and the symbol '@' (issue5553)
+
−            if iscurrentrevision:
+
−                states.append('current')
+
−                symbol = '@'
+
−            symbol = '$'
+
−            states.append('unstable')
+
−        elif iscurrentrevision:
+
−            states.append('current')
+
−            symbol = '@'
+
−        else:
+
−            symbol = ':'
+
−            states.append('clean')
+
−        fm.startitem()
+
−        fm.data(isentry=isentry)
+
−
+
−        if idx is None:
+
−            fm.plain('  ')
+
−            if ui.verbose:
+
−                fm.plain('              ')
+
−        else:
+
−            fm.write('topic.stack.index', '%s%%d' % prefix, idx,
+
−                     label='topic.stack.index ' + labelsgen('topic.stack.index.%s', states))
+
−            if ui.verbose:
+
−                fm.write('topic.stack.shortnode', '(%s)', short(ctx.node()),
+
−                         label='topic.stack.shortnode ' + labelsgen('topic.stack.shortnode.%s', states))
+
−        fm.write('topic.stack.state.symbol', '%s', symbol,
+
−                 label='topic.stack.state ' + labelsgen('topic.stack.state.%s', states))
+
−        fm.plain(' ')
+
−        fm.write('topic.stack.desc', '%s', ctx.description().splitlines()[0],
+
−                 label='topic.stack.desc ' + labelsgen('topic.stack.desc.%s', states))
+
−        fm.condwrite(states != ['clean'] and idx is not None, 'topic.stack.state',
+
−                     ' (%s)', fm.formatlist(states, 'topic.stack.state'),
+
−                     label='topic.stack.state ' + labelsgen('topic.stack.state.%s', states))
+
−        fm.plain('\n')
+
−    fm.end()
+
−
+
−def stackdata(repo, branch=None, topic=None):
+
−    """get various data about a stack
+
−
+
−    :changesetcount: number of non-obsolete changesets in the stack
+
−    :troubledcount: number on troubled changesets
+
−    :headcount: number of heads on the topic
+
−    :behindcount: number of changeset on rebase destination
+
−    """
+
−    data = {}
+
−    revs = getstack(repo, branch, topic)[1:]
+
−    data['changesetcount'] = len(revs)
+
−    data['troubledcount'] = len([r for r in revs if repo[r].isunstable()])
+
−    deps, rdeps = builddependencies(repo, revs)
+
−    data['headcount'] = len([r for r in revs if not rdeps[r]])
+
−    data['behindcount'] = 0
+
−    if revs:
+
−        minroot = [min(r for r in revs if not deps[r])]
+
−        try:
+
−            dest = destutil.destmerge(repo, action='rebase',
+
−                                      sourceset=minroot,
+
−                                      onheadcheck=False)
+
−            data['behindcount'] = len(repo.revs("only(%d, %ld)", dest,
+
−                                                minroot))
+
−        except error.NoMergeDestAbort:
+
−            data['behindcount'] = 0
+
−        except error.ManyMergeDestAbort:
+
−            data['behindcount'] = -1
+
−    data['branches'] = sorted(set(repo[r].branch() for r in revs))
+
−
+
−    return data