1 files changed, 42 insertions, 0 deletions
diff --git a/util/get-checksums b/util/get-checksums
new file mode 100755
index 0000000..9d1b86a
--- /dev/null
+++ b/util/get-checksums
@@ -0,0 +1,42 @@
+#!/bin/sh
+# See LICENSE file for copyright and license details.
+
+set -e
+
+gensums () {
+	gensum sha224sum SHA224
+	gensum sha256sum SHA256
+	gensum sha384sum SHA384
+	gensum sha512sum SHA512
+	gensum sha512-224sum SHA512/224
+	gensum sha512-256sum SHA512/256
+	gensum sha3-224sum SHA3-224
+	gensum sha3-256sum SHA3-256
+	gensum sha3-384sum SHA3-384
+	gensum sha3-512sum SHA3-512
+	gensum b2sum BLAKE2b
+}
+
+if test $# = 1 && test "$1" = '-- output checksum order --'; then
+	gensum () { printf '%s\n' "$2"; }
+	gensums
+	exit 0
+fi
+
+if ! test $# = 1; then
+        printf 'usage: %s tarball\n' "$0" >&2
+        exit 1
+fi
+
+tarball="$1"
+
+gensum () {
+	tool="$1"
+	name="$2"
+
+	sum="$(${tool} < "${tarball}" | cut -d ' ' -f 1)"
+	test -n "${sum}"
+	printf '%s checksum: %s\n' "${name}" "${sum}"
+}
+
+gensums