view hgext/children.py @ 8234:27dbe534397b

templatefilters: add "nonempty" template filter

It ensures that at least "(none)" is returned in case the argument
passed is None or ''. This is primarily useful to render empty
changelog messages for hgweb but may be useful for others, too.

# Mercurial extension to provide the 'hg children' command
#
# Copyright 2007 by Intevation GmbH <[e-mail]>
#
# Author(s):
# Thomas Arendsen Hein <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.

from mercurial import cmdutil
from mercurial.commands import templateopts
from mercurial.i18n import _


def children(ui, repo, file_=None, **opts):
    """show the children of the given or working directory revision

    Print the children of the working directory's revisions. If a
    revision is given via --rev/-r, the children of that revision will
    be printed. If a file argument is given, revision in which the
    file was last changed (after the working directory revision or the
    argument to --rev if given) is printed.
    """
    rev = opts.get('rev')
    if file_:
        ctx = repo.filectx(file_, changeid=rev)
    else:
        ctx = repo[rev]

    displayer = cmdutil.show_changeset(ui, repo, opts)
    for cctx in ctx.children():
        displayer.show(cctx)


cmdtable = {
    "children":
        (children,
         [('r', 'rev', '', _('show children of the specified revision')),
         ] + templateopts,
         _('hg children [-r REV] [FILE]')),
}