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# POSIX sh-compatible shell definitions
#
# Copyright (C) 2021, 2023 Sean Whitton <spwhitton@spwhitton.name>
#
# This program 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.
#
# This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
tab="$(printf '\t')"
cchars="$(printf '*[\001-\037\177]*')"
fail () {
echo >&2 "${0##*/}: $*"
exit 127
}
dir_contents () {
( cd "$1"; find . ! -name . ! -name "$cchars" -print -prune )
}
# Copied from src/connection.lisp in Consfigurator, which see for commentary.
mkstemp () {
local template="${1:-${TMPDIR:-/tmp}/tmp.XXXXXX}" err=
# Use a subshell in case the parent script is using the third file
# descriptor and to avoid changing its umask, though chances are we were
# called in a subshell, e.g. "$(mkstemp)", anyway.
( umask 077
exec 3>&1
if err="$(if command -v m4 >/dev/null; then
echo "mkstemp($template)" | m4 2>&1 1>&3
else
mktemp "$template" 2>&1 1>&3
fi)"; then
case "$err" in
?*) printf >&2 "%s\n" "$err"; exit 1 ;;
*) exit 0 ;;
esac
else
case "$err" in
?*) printf >&2 "%s\n" "$err" ;;
esac
exit 1
fi
)
}
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