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#!/usr/bin/env bash
set -euo pipefail
# Note: We first need to use POSIX's `[ ... ]' instead of Bash's `[[ ... ]]'
# because this is the check for Bash, where the shell may not be Bash. Once we
# confirm that we are in Bash, we can use [[ ... ]] and (( ... )). Note that
# these [[ ... ]] and (( ... )) do not cause syntax errors in POSIX shells,
# though they can be parsed differently.
if [ -z "${BASH_VERSION-}" ] ||
[[ -z "${BASH_VERSINFO-}" ]] ||
((BASH_VERSINFO[0] < 3 || (BASH_VERSINFO[0] == 3 && BASH_VERSINFO[1] < 2)))
then
printf 'bats: this program needs to be run by Bash >= 3.2\n' >&2
exit 1
fi
if command -v greadlink >/dev/null; then
bats_readlinkf() {
greadlink -f "$1"
}
else
bats_readlinkf() {
readlink -f "$1"
}
fi
fallback_to_readlinkf_posix() {
bats_readlinkf() {
[ "${1:-}" ] || return 1
max_symlinks=40
CDPATH='' # to avoid changing to an unexpected directory
target=$1
[ -e "${target%/}" ] || target=${1%"${1##*[!/]}"} # trim trailing slashes
[ -d "${target:-/}" ] && target="$target/"
cd -P . 2>/dev/null || return 1
while [ "$max_symlinks" -ge 0 ] && max_symlinks=$((max_symlinks - 1)); do
if [ ! "$target" = "${target%/*}" ]; then
case $target in
/*) cd -P "${target%/*}/" 2>/dev/null || break ;;
*) cd -P "./${target%/*}" 2>/dev/null || break ;;
esac
target=${target##*/}
fi
if [ ! -L "$target" ]; then
target="${PWD%/}${target:+/}${target}"
printf '%s\n' "${target:-/}"
return 0
fi
# `ls -dl` format: "%s %u %s %s %u %s %s -> %s\n",
# <file mode>, <number of links>, <owner name>, <group name>,
# <size>, <date and time>, <pathname of link>, <contents of link>
# https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html
link=$(ls -dl -- "$target" 2>/dev/null) || break
target=${link#*" $target -> "}
done
return 1
}
}
if ! BATS_PATH=$(bats_readlinkf "${BASH_SOURCE[0]}" 2>/dev/null); then
fallback_to_readlinkf_posix
BATS_PATH=$(bats_readlinkf "${BASH_SOURCE[0]}")
fi
export BATS_SAVED_PATH=$PATH
BATS_BASE_LIBDIR=lib # this will be patched with the true value in install.sh
export BATS_ROOT=${BATS_PATH%/*/*}
export -f bats_readlinkf
exec env BATS_ROOT="$BATS_ROOT" BATS_LIBDIR="${BATS_BASE_LIBDIR:-lib}" "$BATS_ROOT/libexec/bats-core/bats" "$@"
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