lib: support arbitrary compressed package files

We need to modify the matching of valid package files to support formats
like zstd. Let's try to use an eager approach instead of a simple
whitelist in order to be functional for arbitrary formats that may be
introduced in the future without the need to adjust any code.

Allow any single fragment word as compression type but filter out known
non-package content like signature files.

Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/common.sh b/lib/common.sh
index eaa16a4..fce52f6 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -142,7 +142,7 @@ find_cached_package() {
 	for dir in "${searchdirs[@]}"; do
 		[[ -d $dir ]] || continue
 
-		for pkg in "$dir"/*.pkg.tar?(.?z); do
+		for pkg in "$dir"/*.pkg.tar?(.!(sig|*.*)); do
 			[[ -f $pkg ]] || continue
 
 			# avoid adding duplicates of the same inode
@@ -152,7 +152,7 @@ find_cached_package() {
 
 			# split apart package filename into parts
 			pkgbasename=${pkg##*/}
-			pkgbasename=${pkgbasename%.pkg.tar?(.?z)}
+			pkgbasename=${pkgbasename%.pkg.tar*}
 
 			arch=${pkgbasename##*-}
 			pkgbasename=${pkgbasename%-"$arch"}