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88 lines
2.0 KiB
Plaintext
88 lines
2.0 KiB
Plaintext
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#!/bin/bash
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### emacs-shell-lib - shared code for Emacs shell scripts
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## Copyright (C) 2022 Free Software Foundation, Inc.
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## Author: Stefan Kangas <stefankangas@gmail.com>
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## This file is part of GNU Emacs.
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## GNU Emacs is free software: you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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## GNU Emacs is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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## You should have received a copy of the GNU General Public License
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## along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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### Code:
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# Set an explicit umask.
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umask 077
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# Treat unset variables as an error.
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set -o nounset
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# Exit immediately on error.
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set -o errexit
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# Avoid non-standard command output from non-C locales.
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unset LANG LC_ALL LC_MESSAGES
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PN=${0##*/} # basename of script
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PD=${0%/*} # script directory
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[ "$PD" = "$0" ] && PD=. # if PATH includes PWD
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die () # write error to stderr and exit
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{
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[ $# -gt 0 ] && echo "$PN: $@" >&2
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exit 1
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}
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emacs_tempfiles=()
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emacs_tempfiles_cleanup ()
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{
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for file in ${emacs_tempfiles[@]}; do
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rm -f "${file}" 2> /dev/null
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done
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}
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trap '
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ret=$?
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emacs_tempfiles_cleanup
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exit $ret
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' EXIT
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emacs_mktemp ()
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{
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local readonly file="${1-}"
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local tempfile
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local prefix
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if [ -z "$file" ]; then
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prefix="$PN"
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else
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prefix="$1"
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fi
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if [ -x "$(command -v mktemp)" ]; then
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tempfile=$(mktemp "${TMPDIR-/tmp}/${prefix}.XXXXXXXXXX")
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else
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tempfile="${TMPDIR-/tmp}/${prefix}.$RANDOM$$"
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(umask 077 && touch "$tempfile")
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fi
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[ -z "${tempfile}" ] && die "Creating temporary file failed"
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emacs_tempfiles+=("${tempfile}")
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echo "$tempfile"
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}
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