# Mercurial extension to provide the 'hg children' command

#

# Copyright 2007 by Intevation GmbH <intevation@intevation.de>

#

# Author(s):

# Thomas Arendsen Hein <thomas@intevation.de>

#

# This software may be used and distributed according to the terms of the

# GNU General Public License version 2 or any later version.

'''command to display child changesets'''

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 -r/--rev, 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)

    displayer.close()

cmdtable = {

    "children":

        (children,

         [('r', 'rev', '',

           _('show children of the specified revision'), _('REV')),

         ] + templateopts,

         _('hg children [-r REV] [FILE]')),

}