hgext/show.py
author Martin von Zweigbergk <martinvonz@google.com>
Fri, 11 Feb 2022 22:39:53 -0800
changeset 48783 218154867575
parent 43080 86e4daa2d54c
child 48875 6000f5b25c9b
permissions -rw-r--r--
filemerge: remove an unnecessary join with absolute path The `backup` path is now always absolute, so we don't need to join it with the working copy path. Differential Revision: https://phab.mercurial-scm.org/D12188
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# show.py - Extension implementing `hg show`
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#
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# Copyright 2017 Gregory Szorc <gregory.szorc@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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"""unified command to show various repository information (EXPERIMENTAL)
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This extension provides the :hg:`show` command, which provides a central
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command for displaying commonly-accessed repository data and views of that
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data.
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The following config options can influence operation.
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``commands``
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------------
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``show.aliasprefix``
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   List of strings that will register aliases for views. e.g. ``s`` will
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   effectively set config options ``alias.s<view> = show <view>`` for all
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   views. i.e. `hg swork` would execute `hg show work`.
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   Aliases that would conflict with existing registrations will not be
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   performed.
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"""
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from __future__ import absolute_import
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from mercurial.i18n import _
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from mercurial.node import nullrev
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from mercurial import (
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    cmdutil,
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    commands,
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    destutil,
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    error,
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    formatter,
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    graphmod,
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    logcmdutil,
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    phases,
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    pycompat,
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    registrar,
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    revset,
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    revsetlang,
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    scmutil,
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)
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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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cmdtable = {}
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command = registrar.command(cmdtable)
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revsetpredicate = registrar.revsetpredicate()
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class showcmdfunc(registrar._funcregistrarbase):
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    """Register a function to be invoked for an `hg show <thing>`."""
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    # Used by _formatdoc().
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    _docformat = b'%s -- %s'
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    def _extrasetup(self, name, func, fmtopic=None, csettopic=None):
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        """Called with decorator arguments to register a show view.
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        ``name`` is the sub-command name.
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        ``func`` is the function being decorated.
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        ``fmtopic`` is the topic in the style that will be rendered for
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        this view.
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        ``csettopic`` is the topic in the style to be used for a changeset
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        printer.
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        If ``fmtopic`` is specified, the view function will receive a
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        formatter instance. If ``csettopic`` is specified, the view
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        function will receive a changeset printer.
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        """
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        func._fmtopic = fmtopic
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        func._csettopic = csettopic
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showview = showcmdfunc()
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@command(
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    b'show',
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    [
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        # TODO: Switch this template flag to use cmdutil.formatteropts if
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        # 'hg show' becomes stable before --template/-T is stable. For now,
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        # we are putting it here without the '(EXPERIMENTAL)' flag because it
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        # is an important part of the 'hg show' user experience and the entire
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        # 'hg show' experience is experimental.
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        (b'T', b'template', b'', b'display with template', _(b'TEMPLATE')),
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    ],
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    _(b'VIEW'),
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    helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
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)
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def show(ui, repo, view=None, template=None):
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    """show various repository information
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    A requested view of repository data is displayed.
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    If no view is requested, the list of available views is shown and the
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    command aborts.
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    .. note::
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       There are no backwards compatibility guarantees for the output of this
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       command. Output may change in any future Mercurial release.
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       Consumers wanting stable command output should specify a template via
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       ``-T/--template``.
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    List of available views:
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    """
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    if ui.plain() and not template:
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        hint = _(b'invoke with -T/--template to control output format')
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        raise error.Abort(
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            _(b'must specify a template in plain mode'), hint=hint
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        )
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    views = showview._table
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    if not view:
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        ui.pager(b'show')
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        # TODO consider using formatter here so available views can be
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        # rendered to custom format.
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        ui.write(_(b'available views:\n'))
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        ui.write(b'\n')
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        for name, func in sorted(views.items()):
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            ui.write(b'%s\n' % pycompat.sysbytes(func.__doc__))
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        ui.write(b'\n')
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        raise error.Abort(
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            _(b'no view requested'),
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            hint=_(b'use "hg show VIEW" to choose a view'),
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        )
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    # TODO use same logic as dispatch to perform prefix matching.
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    if view not in views:
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        raise error.Abort(
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            _(b'unknown view: %s') % view,
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            hint=_(b'run "hg show" to see available views'),
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        )
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    template = template or b'show'
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    fn = views[view]
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    ui.pager(b'show')
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    if fn._fmtopic:
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        fmtopic = b'show%s' % fn._fmtopic
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        with ui.formatter(fmtopic, {b'template': template}) as fm:
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            return fn(ui, repo, fm)
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    elif fn._csettopic:
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        ref = b'show%s' % fn._csettopic
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        spec = formatter.lookuptemplate(ui, ref, template)
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        displayer = logcmdutil.changesettemplater(ui, repo, spec, buffered=True)
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        return fn(ui, repo, displayer)
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    else:
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        return fn(ui, repo)
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@showview(b'bookmarks', fmtopic=b'bookmarks')
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def showbookmarks(ui, repo, fm):
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    """bookmarks and their associated changeset"""
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    marks = repo._bookmarks
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    if not len(marks):
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        # This is a bit hacky. Ideally, templates would have a way to
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        # specify an empty output, but we shouldn't corrupt JSON while
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        # waiting for this functionality.
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        if not isinstance(fm, formatter.jsonformatter):
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            ui.write(_(b'(no bookmarks set)\n'))
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        return
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    revs = [repo[node].rev() for node in marks.values()]
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    active = repo._activebookmark
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    longestname = max(len(b) for b in marks)
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    nodelen = longestshortest(repo, revs)
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    for bm, node in sorted(marks.items()):
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        fm.startitem()
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        fm.context(ctx=repo[node])
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        fm.write(b'bookmark', b'%s', bm)
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        fm.write(b'node', fm.hexfunc(node), fm.hexfunc(node))
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        fm.data(
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            active=bm == active, longestbookmarklen=longestname, nodelen=nodelen
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        )
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@showview(b'stack', csettopic=b'stack')
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def showstack(ui, repo, displayer):
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    """current line of work"""
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    wdirctx = repo[b'.']
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    if wdirctx.rev() == nullrev:
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        raise error.Abort(
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            _(
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                b'stack view only available when there is a '
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                b'working directory'
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            )
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        )
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    if wdirctx.phase() == phases.public:
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        ui.write(
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            _(
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                b'(empty stack; working directory parent is a published '
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                b'changeset)\n'
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            )
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        )
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        return
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    # TODO extract "find stack" into a function to facilitate
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    # customization and reuse.
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    baserev = destutil.stackbase(ui, repo)
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    basectx = None
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    if baserev is None:
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        baserev = wdirctx.rev()
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        stackrevs = {wdirctx.rev()}
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    else:
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        stackrevs = set(repo.revs(b'%d::.', baserev))
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    ctx = repo[baserev]
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    if ctx.p1().rev() != nullrev:
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        basectx = ctx.p1()
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    # And relevant descendants.
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    branchpointattip = False
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    cl = repo.changelog
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    for rev in cl.descendants([wdirctx.rev()]):
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        ctx = repo[rev]
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        # Will only happen if . is public.
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        if ctx.phase() == phases.public:
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            break
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        stackrevs.add(ctx.rev())
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        # ctx.children() within a function iterating on descandants
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        # potentially has severe performance concerns because revlog.children()
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        # iterates over all revisions after ctx's node. However, the number of
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        # draft changesets should be a reasonably small number. So even if
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        # this is quadratic, the perf impact should be minimal.
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        if len(ctx.children()) > 1:
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            branchpointattip = True
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            break
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    stackrevs = list(sorted(stackrevs, reverse=True))
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    # Find likely target heads for the current stack. These are likely
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    # merge or rebase targets.
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    if basectx:
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        # TODO make this customizable?
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        newheads = set(
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            repo.revs(
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                b'heads(%d::) - %ld - not public()', basectx.rev(), stackrevs
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            )
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        )
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    else:
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        newheads = set()
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    allrevs = set(stackrevs) | newheads | {baserev}
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    nodelen = longestshortest(repo, allrevs)
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    try:
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        cmdutil.findcmd(b'rebase', commands.table)
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        haverebase = True
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    except (error.AmbiguousCommand, error.UnknownCommand):
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        haverebase = False
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    # TODO use templating.
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    # TODO consider using graphmod. But it may not be necessary given
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    # our simplicity and the customizations required.
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    # TODO use proper graph symbols from graphmod
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    tres = formatter.templateresources(ui, repo)
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    shortesttmpl = formatter.maketemplater(
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        ui, b'{shortest(node, %d)}' % nodelen, resources=tres
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    )
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    def shortest(ctx):
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        return shortesttmpl.renderdefault({b'ctx': ctx, b'node': ctx.hex()})
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    # We write out new heads to aid in DAG awareness and to help with decision
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    # making on how the stack should be reconciled with commits made since the
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   294
    # branch point.
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    if newheads:
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        # Calculate distance from base so we can render the count and so we can
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        # sort display order by commit distance.
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        revdistance = {}
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        for head in newheads:
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            # There is some redundancy in DAG traversal here and therefore
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            # room to optimize.
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            ancestors = cl.ancestors([head], stoprev=basectx.rev())
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            revdistance[head] = len(list(ancestors))
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        sourcectx = repo[stackrevs[-1]]
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        sortedheads = sorted(
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            newheads, key=lambda x: revdistance[x], reverse=True
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        )
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        for i, rev in enumerate(sortedheads):
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            ctx = repo[rev]
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            if i:
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                ui.write(b': ')
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            else:
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                ui.write(b'  ')
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            ui.writenoi18n(b'o  ')
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            displayer.show(ctx, nodelen=nodelen)
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            displayer.flush(ctx)
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            ui.write(b'\n')
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   323
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            if i:
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                ui.write(b':/')
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            else:
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                ui.write(b' /')
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   328
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            ui.write(b'    (')
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            ui.write(
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                _(b'%d commits ahead') % revdistance[rev],
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                label=b'stack.commitdistance',
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   333
            )
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   334
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   335
            if haverebase:
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   336
                # TODO may be able to omit --source in some scenarios
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                ui.write(b'; ')
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                ui.write(
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                    (
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   340
                        b'hg rebase --source %s --dest %s'
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   341
                        % (shortest(sourcectx), shortest(ctx))
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   342
                    ),
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                    label=b'stack.rebasehint',
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   344
                )
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   345
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            ui.write(b')\n')
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   347
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        ui.write(b':\n:    ')
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        ui.write(_(b'(stack head)\n'), label=b'stack.label')
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   350
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    if branchpointattip:
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   352
        ui.write(b' \\ /  ')
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        ui.write(_(b'(multiple children)\n'), label=b'stack.label')
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        ui.write(b'  |\n')
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   355
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   356
    for rev in stackrevs:
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   357
        ctx = repo[rev]
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   358
        symbol = b'@' if rev == wdirctx.rev() else b'o'
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   359
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   360
        if newheads:
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   361
            ui.write(b': ')
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   362
        else:
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   363
            ui.write(b'  ')
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   364
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   365
        ui.write(symbol, b'  ')
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   366
        displayer.show(ctx, nodelen=nodelen)
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   367
        displayer.flush(ctx)
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        ui.write(b'\n')
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   369
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   370
    # TODO display histedit hint?
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   371
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   372
    if basectx:
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   373
        # Vertically and horizontally separate stack base from parent
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   374
        # to reinforce stack boundary.
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   375
        if newheads:
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   376
            ui.write(b':/   ')
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   377
        else:
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   378
            ui.write(b' /   ')
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   379
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   380
        ui.write(_(b'(stack base)'), b'\n', label=b'stack.label')
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   381
        ui.writenoi18n(b'o  ')
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   382
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   383
        displayer.show(basectx, nodelen=nodelen)
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   384
        displayer.flush(basectx)
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   385
        ui.write(b'\n')
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   386
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   387
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   388
@revsetpredicate(b'_underway([commitage[, headage]])')
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   389
def underwayrevset(repo, subset, x):
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   390
    args = revset.getargsdict(x, b'underway', b'commitage headage')
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    if b'commitage' not in args:
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        args[b'commitage'] = None
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   393
    if b'headage' not in args:
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   394
        args[b'headage'] = None
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   395
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   396
    # We assume callers of this revset add a topographical sort on the
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diff changeset
   397
    # result. This means there is no benefit to making the revset lazy
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   398
    # since the topographical sort needs to consume all revs.
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   399
    #
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   400
    # With this in mind, we build up the set manually instead of constructing
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   401
    # a complex revset. This enables faster execution.
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   402
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   403
    # Mutable changesets (non-public) are the most important changesets
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   404
    # to return. ``not public()`` will also pull in obsolete changesets if
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   405
    # there is a non-obsolete changeset with obsolete ancestors. This is
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   406
    # why we exclude obsolete changesets from this query.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   407
    rs = b'not public() and not obsolete()'
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   408
    rsargs = []
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   409
    if args[b'commitage']:
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   410
        rs += b' and date(%s)'
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   411
        rsargs.append(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   412
            revsetlang.getstring(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   413
                args[b'commitage'], _(b'commitage requires a string')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   414
            )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   415
        )
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   416
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   417
    mutable = repo.revs(rs, *rsargs)
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   418
    relevant = revset.baseset(mutable)
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   419
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   420
    # Add parents of mutable changesets to provide context.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   421
    relevant += repo.revs(b'parents(%ld)', mutable)
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   422
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   423
    # We also pull in (public) heads if they a) aren't closing a branch
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   424
    # b) are recent.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   425
    rs = b'head() and not closed()'
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   426
    rsargs = []
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   427
    if args[b'headage']:
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   428
        rs += b' and date(%s)'
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   429
        rsargs.append(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   430
            revsetlang.getstring(
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   431
                args[b'headage'], _(b'headage requires a string')
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   432
            )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   433
        )
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   434
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   435
    relevant += repo.revs(rs, *rsargs)
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   436
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   437
    # Add working directory parent.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   438
    wdirrev = repo[b'.'].rev()
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   439
    if wdirrev != nullrev:
32291
bd872f64a8ba cleanup: use set literals
Martin von Zweigbergk <martinvonz@google.com>
parents: 32058
diff changeset
   440
        relevant += revset.baseset({wdirrev})
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   441
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   442
    return subset & relevant
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   443
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   444
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   445
@showview(b'work', csettopic=b'work')
33046
11f768258dcc show: construct changeset templater during dispatch
Gregory Szorc <gregory.szorc@gmail.com>
parents: 32837
diff changeset
   446
def showwork(ui, repo, displayer):
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   447
    """changesets that aren't finished"""
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   448
    # TODO support date-based limiting when calling revset.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   449
    revs = repo.revs(b'sort(_underway(), topo)')
34191
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   450
    nodelen = longestshortest(repo, revs)
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   451
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   452
    revdag = graphmod.dagwalker(repo, revs)
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   453
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   454
    ui.setconfig(b'experimental', b'graphshorten', True)
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   455
    logcmdutil.displaygraph(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   456
        ui,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   457
        repo,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   458
        revdag,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   459
        displayer,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   460
        graphmod.asciiedges,
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   461
        props={b'nodelen': nodelen},
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   462
    )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   463
31944
99bc93147d87 show: implement underway view
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31943
diff changeset
   464
33137
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   465
def extsetup(ui):
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   466
    # Alias `hg <prefix><view>` to `hg show <view>`.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   467
    for prefix in ui.configlist(b'commands', b'show.aliasprefix'):
33137
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   468
        for view in showview._table:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   469
            name = b'%s%s' % (prefix, view)
33137
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   470
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   471
            choice, allcommands = cmdutil.findpossible(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   472
                name, commands.table, strict=True
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   473
            )
33137
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   474
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   475
            # This alias is already a command name. Don't set it.
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   476
            if name in choice:
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   477
                continue
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   478
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   479
            # Same for aliases.
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   480
            if ui.config(b'alias', name, None):
33137
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   481
                continue
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   482
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   483
            ui.setconfig(b'alias', name, b'show %s' % view, source=b'show')
33137
99ce2f586cd4 show: config option to register aliases for views
Gregory Szorc <gregory.szorc@gmail.com>
parents: 33046
diff changeset
   484
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   485
34191
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   486
def longestshortest(repo, revs, minlen=4):
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   487
    """Return the length of the longest shortest node to identify revisions.
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   488
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   489
    The result of this function can be used with the ``shortest()`` template
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   490
    function to ensure that a value is unique and unambiguous for a given
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   491
    set of nodes.
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   492
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   493
    The number of revisions in the repo is taken into account to prevent
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   494
    a numeric node prefix from conflicting with an integer revision number.
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   495
    If we fail to do this, a value of e.g. ``10023`` could mean either
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   496
    revision 10023 or node ``10023abc...``.
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   497
    """
35498
dfaf9f10e2e5 show: use revlog function to compute length of the longest shortest node
Yuya Nishihara <yuya@tcha.org>
parents: 35469
diff changeset
   498
    if not revs:
dfaf9f10e2e5 show: use revlog function to compute length of the longest shortest node
Yuya Nishihara <yuya@tcha.org>
parents: 35469
diff changeset
   499
        return minlen
37680
e743b8524d60 scmutil: introduce shortesthexnodeidprefix()
Martin von Zweigbergk <martinvonz@google.com>
parents: 37134
diff changeset
   500
    cl = repo.changelog
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   501
    return max(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   502
        len(scmutil.shortesthexnodeidprefix(repo, cl.node(r), minlen))
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   503
        for r in revs
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   504
    )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   505
34191
e6b5e7329ff2 show: use consistent (and possibly shorter) node lengths
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34190
diff changeset
   506
31765
264baeef3588 show: new extension for displaying various repository data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
   507
# Adjust the docstring of the show command so it shows all registered views.
264baeef3588 show: new extension for displaying various repository data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
   508
# This is a bit hacky because it runs at the end of module load. When moved
264baeef3588 show: new extension for displaying various repository data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
   509
# into core or when another extension wants to provide a view, we'll need
264baeef3588 show: new extension for displaying various repository data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
   510
# to do this more robustly.
264baeef3588 show: new extension for displaying various repository data
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff changeset
   511
# TODO make this more robust.
31943
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
   512
def _updatedocstring():
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
   513
    longest = max(map(len, showview._table.keys()))
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
   514
    entries = []
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
   515
    for key in sorted(showview._table.keys()):
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   516
        entries.append(
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   517
            r'    %s   %s'
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   518
            % (
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   519
                pycompat.sysstr(key.ljust(longest)),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   520
                showview._table[key]._origdoc,
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   521
            )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   522
        )
31943
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
   523
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   524
    cmdtable[b'show'][0].__doc__ = pycompat.sysstr(b'%s\n\n%s\n    ') % (
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   525
        cmdtable[b'show'][0].__doc__.rstrip(),
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
   526
        pycompat.sysstr(b'\n\n').join(entries),
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   527
    )
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 42596
diff changeset
   528
31943
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
   529
3e9f118cc834 show: fix formatting of multiple commands
Gregory Szorc <gregory.szorc@gmail.com>
parents: 31859
diff changeset
   530
_updatedocstring()