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#! /bin/sh
# SPDX-FileCopyrightText: Eric S. Raymond <esr@thyrsus.com>
# SPDX-License-Identifier: MIT-0
#
# tapdiffer - Render diff between input and checkfile as a TAP report
#
# Usage: tapdiffer LEGEND CHECKFILE
#
# Output is a TAP report, ok if the diff is empty and not ok otherwise.
# A nonempty diff is shipped as a TAP YAML block following "not ok"
# unless QUIET=1 in the environment.
#
# This code is intended to be embedded in your project. The author
# grants permission for it to be distributed under the prevailing
# license of your project if you choose, provided that license is
# OSD-compliant; otherwise the following SPDX tag incorporates the
# MIT No Attribution license by reference.
#
# A newer version may be available at https://gitlab.com/esr/tapview
# Check your last commit dqte for this file against the commit list
# there to see if it might be a good idea to update.
#
diffopts=-u
while getopts bn opt
do
case $opt in
b) diffopts=-ub;;
*) echo "tapdiffer: unkmnown option ${opt}."; exit 1;;
esac
done
# shellcheck disable=SC2004
shift $(($OPTIND - 1))
legend=$1
checkfile=$2
trap 'rm /tmp/tapdiff$$' EXIT HUP INT QUIT TERM
if diff --text "${diffopts}" "${checkfile}" - >/tmp/tapdiff$$
then
echo "ok - ${legend}"
else
echo "not ok - ${legend}"
if [ ! "${QUIET}" = 1 ]
then
echo " --- |"
sed </tmp/tapdiff$$ -e 's/^/ /'
echo " ..."
fi
fi
# end
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