From c50825cb8923e35282be44b2c7fc417ee1dc19e0 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Wed, 31 Dec 2014 19:41:29 -0500
Subject: lib/conf.sh: Update unset_PKGBUILD to support arch-specific variables

Also, sha224sums, which is not actually mentioned in the makepkg
documentation.
---
 src/lib/conf.sh.in | 34 ++++++++++++++++++++++++++++------
 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/src/lib/conf.sh.in b/src/lib/conf.sh.in
index 3ddef0b..4f86f12 100644
--- a/src/lib/conf.sh.in
+++ b/src/lib/conf.sh.in
@@ -188,15 +188,37 @@ set_var() {
 
 unset_PKGBUILD() {
 	# This routine is based primarily off of the PKGBUILD(5) man-page,
-	# version 4.1.2, dated 2013-06-18.
+	# version 4.2.0, dated 2014-12-31
+
+	# This is kinda weird, but everything is more readable with
+	# this as a utility function, but I didn't want to introduce a
+	# new global function, so I just introduced it with the name
+	# of a function that we get to unset anyway.  So it can't
+	# clash with anything!
+	mksource() {
+		local v
+		for v in "$@"; do
+			unset -v "$v" $(declare -p|sed -rn "s/^declare -\S+ ($v_[a-zA-Z0-9_]*)=.*/\1/p")
+		done
+	}
+
+	# This line is taken from the makepkg source
+	local known_hash_algos=('md5' 'sha1' 'sha224' 'sha256' 'sha384' 'sha512')
 
 	# 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
+	unset -v pkgrel pkgdesc epoch url license install changelog
+
+	mksource source
+	unset -v noextract
+	local sums=("${known_hash_algos[@]/%/sums}")
+	mksource "${sums[@]}"
+
+	unset -v groups arch backup
+	mksource depends makedepends checkdepends optdepends
+	mksource conflicts provides replaces
+	unset -v options
 
 	# From the "PACKAGING FUNCTIONS" section (in order of mention)
 	unset -f package prepare build check
@@ -206,7 +228,7 @@ unset_PKGBUILD() {
 	unset -v pkgbase
 
 	# These are used by the `librefetch` program
-	unset -v mksource mknoextract mkmd5sums mksha{1,256,384,512}sums
+	unset -v mksource mknoextract "${sums[@]/#/mk}"
 	unset -v mkdepends
 	unset -f mksource
 }
-- 
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