[pacman-dev] [PATCH v5 2/2] makepkg: also move restore_envvars handling into libmakepkg

[Eli Schwartz]

Signed-off-by: Eli Schwartz <eschwartz at archlinux.org>
---

v5: prioritize $1 over $MAKEPKG_CONF in the public API.

 scripts/libmakepkg/util/config.sh.in | 20 ++++++++++++++++++++
 scripts/makepkg.sh.in                |  7 +------
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/scripts/libmakepkg/util/config.sh.in b/scripts/libmakepkg/util/config.sh.in
index 9201bc01..4c7d39b7 100644
--- a/scripts/libmakepkg/util/config.sh.in
+++ b/scripts/libmakepkg/util/config.sh.in
@@ -54,3 +54,23 @@ source_makepkg_config() {
 		fi
 	fi
 }
+
+# load makepkg.conf by sourcing the configuration files, and preserving
+# existing environment settings
+load_makepkg_config() {
+	# $1: override system config file
+
+	local MAKEPKG_CONF=${1:-${MAKEPKG_CONF:- at sysconfdir@/makepkg.conf}}
+
+	# preserve environment variables to override makepkg.conf
+	local restore_envvars=$(
+		for var in PKGDEST SRCDEST SRCPKGDEST LOGDEST BUILDDIR PKGEXT SRCEXT GPGKEY PACKAGER CARCH; do
+			# declare -p does not work inside a function due to being marked as local
+			[[ -v $var ]] && printf '%s=%s\n' "$var" "${!var at Q}"
+		done
+	)
+
+	source_makepkg_config "$MAKEPKG_CONF"
+
+	eval "$restore_envvars"
+}
diff --git a/scripts/makepkg.sh.in b/scripts/makepkg.sh.in
index 59a738a0..dcd6b4b3 100644
--- a/scripts/makepkg.sh.in
+++ b/scripts/makepkg.sh.in
@@ -1098,12 +1098,7 @@ done
 trap 'trap_exit INT "$(gettext "Aborted by user! Exiting...")"' INT
 trap 'trap_exit USR1 "$(gettext "An unknown error has occurred. Exiting...")"' ERR
 
-# preserve environment variables to override makepkg.conf
-restore_envvars=$(declare -p PKGDEST SRCDEST SRCPKGDEST LOGDEST BUILDDIR PKGEXT SRCEXT GPGKEY PACKAGER CARCH 2>/dev/null || true)
-
-source_makepkg_config
-
-eval "$restore_envvars"
+load_makepkg_config
 
 # override settings from extra variables on commandline, if any
 if (( ${#extra_environment[*]} )); then
-- 
2.21.0