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Diffstat (limited to 'src/lib/conf.sh.in')
| -rw-r--r-- | src/lib/conf.sh.in | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/lib/conf.sh.in b/src/lib/conf.sh.in new file mode 100644 index 0000000..fa66016 --- /dev/null +++ b/src/lib/conf.sh.in @@ -0,0 +1,207 @@ +#!/usr/bin/env bash # non-executable, but put this there as a hint to text editors +# This may be included with or without `set -euE` + +# Copyright (C) 2012-2014 Luke Shumaker <lukeshu@sbcglobal.net> +# +# License: GNU GPLv2+ +# +# 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 2 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 <http://www.gnu.org/licenses/>. + +LIBREUSER="${SUDO_USER:-$USER}" +if [[ $LIBREUSER == $USER ]]; then + LIBREHOME=$HOME +else + LIBREHOME="$(eval echo ~$LIBREUSER)" +fi +if [[ -z ${XDG_CONFIG_HOME:-} ]]; then + export XDG_CONFIG_HOME="${LIBREHOME}/.config" +fi +if [[ -z ${XDG_CACHE_HOME:-} ]]; then + export XDG_CACHE_HOME="${LIBREHOME}/.cache" +fi + +# Low-level generic functions ################################################## + +# Usage: list_files $slug +# Lists the configuration files to be considered for $slug. +# Later files should take precedence over earlier files. +list_files() { + local slug=$1 + case $slug in + abs) + echo @sysconfdir@/$slug.conf + echo "$LIBREHOME/.$slug.conf" + ;; + makepkg) + if [[ ${MAKEPKG_CONF:-} != @sysconfdir@/$slug.conf && -r ${MAKEPKG_CONF:-} ]]; then + echo "$MAKEPKG_CONF" + else + echo @sysconfdir@/$slug.conf + echo "$LIBREHOME/.$slug.conf" + fi + ;; + xbs*) + echo @sysconfdir@/xbs/$slug.conf + echo "$XDG_CONFIG_HOME/xbs/$slug.conf" + ;; + libretools) + echo @sysconfdir@/$slug.conf + echo "$XDG_CONFIG_HOME/libretools/$slug.conf" + ;; + *) + echo @sysconfdir@/libretools.d/$slug.conf + echo "$XDG_CONFIG_HOME/libretools/$slug.conf" + ;; + esac +} + +# Usage: list_envvars $slug +# Lists the environmental variables that take precedence over the configuration +# files for $slug. +list_envvars() { + local slug=$1 + case $slug in + makepkg) + printf '%s\n' \ + PKGDEST SRCDEST SRCPKGDEST LOGDEST \ + BUILDDIR \ + PKGEXT SRCEXT \ + GPGKEY PACKAGER + ;; + libretools) + printf '%s\n' DIFFPROG + ;; + xbs) + printf '%s\n' BUILDSYSTEM + ;; + *) :;; + esac +} + +# High-level generic functions ################################################# + +# Usage: load_files $slug +# Loads the configuration files for $slug in the proper order. +load_files() { + local slug=$1 + local var + local file + + # Save the existing versions at _VARNAME + for var in $(list_envvars $slug); do + [[ -n ${!var:-} ]] && eval "_$var=\${$var}" + done + + # Load the files + for file in $(list_files $slug); do + if [[ -r $file ]]; then + . "$file" || return 1 + fi + done + + # Restore the _SAVED versions + for var in $(list_envvars $slug); do + eval "$var=\${_$var:-\${$var:-}}" + done +} + +# Usage: check_vars $slug VAR1 VAR2... +# Check whether the variables listed are properly set. +# If not, it prints a message saying to set them in the configuration file(s) +# for $slug. +check_vars() ( + local slug=$1; shift + + local ret=0 + + local VAR + for VAR in "$@"; do + if [[ -z ${!VAR:-} ]]; then + type print &>/dev/null || . libremessages + if [[ $(list_files $slug|wc -l) -gt 1 ]]; then + _l print "Configure '%s' in one of:" "$VAR" + list_files $slug | sed 's/./ -> &/' + else + _l print "Configure '%s' in '%s'" "$VAR" "$(list_files $slug)" + fi + ret=1 + fi + done >&2 + + if [[ $ret != 0 ]]; then + return 1 + fi +) + +# Usage: get_var <slug> <var_name> <default_value> +# Does not work with arrays +get_var() ( + set +euE + local slug=$1 + local setting=$2 + local default=$3 + load_files "$slug" + printf '%s' "${!setting:-${default}}" +) + +# Usage: set_var <slug> <var_name> <value> +# Does not work with arrays +set_var() { + local slug=$1 + local key=$2 + local val=$3 + local file + for file in $(list_files "$slug"|tac); do + if [[ -w $file ]]; then + sed -i "/^\s*$key=/d" "$file" + printf '%s=%q\n' "$key" "$val" >> "$file" + return 0 + fi + done + return 1 +} + +# PKGBUILD (not configuration, per se) ######################################### + +unset_PKGBUILD() { + # This routine is based primarily off of the PKGBUILD(5) man-page, + # version 4.1.2, dated 2013-06-18. + + # From the "OPTIONS AND DIRECTIVES" section (in order of mention) + unset -v pkgname pkgver + unset -f pkgver + unset -v pkgrel pkgdesc epoch url license install changelog source + unset -v noextract md5sums sha{1,256,384,512}sums groups arch backup + unset -v depends makedepends checkdepends optdepends conflicts provides + unset -v replaces options + + # From the "PACKAGING FUNCTIONS" section (in order of mention) + unset -f package prepare build check + + # From the "PACKAGE SPLITTING" section + unset -f $(declare -f|sed -n 's/^\(package_\S*\) ()\s*$/\1/p') + unset -v pkgbase + + # These are used by the `librefetch` program + unset -v mksource mknoextract mkmd5sums mksha{1,256,384,512}sums + unset -v mkdepends + unset -f mksource +} + +load_PKGBUILD() { + local file=${1:-./PKGBUILD} + unset_PKGBUILD + CARCH="$(get_var makepkg CARCH "`uname -m`")" + . "$file" +} |