1 files changed, 47 insertions, 0 deletions
diff --git a/scripts/libmakepkg/util/compress.sh.in b/scripts/libmakepkg/util/compress.sh.in
new file mode 100644
index 00000000..4e020e7f
--- /dev/null
+++ b/scripts/libmakepkg/util/compress.sh.in
@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+#   compress.sh - functions to compress archives in a uniform manner
+#
+#   Copyright (c) 2017 Pacman Development Team <pacman-dev@archlinux.org>
+#
+#   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/>.
+#
+
+[[ -n "$LIBMAKEPKG_UTIL_COMPRESS_SH" ]] && return
+LIBMAKEPKG_UTIL_COMPRESS_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+
+
+# Wrapper around many stream compression formats, for use in the middle of a
+# pipeline. A tar archive is passed on stdin and compressed to stdout.
+compress_as() {
+       # $1: final archive filename extension for compression type detection
+
+	local filename="$1"
+
+	case "$filename" in
+		*tar.gz)  ${COMPRESSGZ[@]:-gzip -c -f -n} ;;
+		*tar.bz2) ${COMPRESSBZ2[@]:-bzip2 -c -f} ;;
+		*tar.xz)  ${COMPRESSXZ[@]:-xz -c -z -} ;;
+		*tar.lrz) ${COMPRESSLRZ[@]:-lrzip -q} ;;
+		*tar.lzo) ${COMPRESSLZO[@]:-lzop -q} ;;
+		*tar.Z)   ${COMPRESSZ[@]:-compress -c -f} ;;
+		*tar)     cat ;;
+		*) warning "$(gettext "'%s' is not a valid archive extension.")" \
+			"$ext"; cat ;;
+	esac
+}