#!/bin/bash

#  Copyright 2015 by Leipzig University Library, http://ub.uni-leipzig.de
#                 by The Finc Authors, http://finc.info
#                 by Martin Czygan, <martin.czygan@uni-leipzig.de>
#
# This file is part of some open source application.
#
# Some open source application is free software: you can redistribute
# it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, either
# version 3 of the License, or (at your option) any later version.
#
# Some open source application is distributed in the hope that it will
# be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
#
# @license GPL-3.0+ <http://spdx.org/licenses/GPL-3.0+>
#

# Just like `head` but takes a taskname as arguments. The task must have been
# completed successfully before you can `head` it.
#
# Examples
#
#     $ taskhead EBLDates
#     $ taskhead Events --iln 10
#

set -eu
set -o pipefail

args=("$@")

OUTPUT=$(taskoutput "$@"|tail -1)
if [[ "$OUTPUT" == *mrc ]]; then
    yaz-marcdump $OUTPUT | head -100
else
    head -10 $OUTPUT
fi
