Add git-package(1)

1 files changed, 33 insertions, 0 deletions

diff --git a/git-package b/git-package
new file mode 100755
index 0000000..4becad9
--- /dev/null
+++ b/git-package
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+set -e
+
+git rev-parse || exit 1
+
+errx() {
+	printf '%s\n' "$*" >&2
+	exit 1
+}
+
+usage() {
+	errx 'usage: git package [-f format] tree-ish [path...]'
+}
+
+format="$(git config --get package.format)"
+: "${format:=tar.gz}"
+
+while getopts f: opt; do
+	case $opt in
+		f) format=$OPTARG;;
+		?) usage;;
+	esac
+done
+shift $((OPTIND - 1))
+test $# -ge 1 || usage
+
+git archive -l | grep -Fqx "$format" || err "fatal: unknown format"
+
+name="$(basename "$(git rev-parse --show-toplevel)")"
+treeish="$1"
+
+exec git archive --prefix="$name-$treeish/" -o "$name-$treeish.$format" -- "$@"