Initial commit

lib.sh

@@ -0,0 +1,26 @@
+abort() {
+	echo "$1"
+	exit 1
+}
+
+info() {
+	if [ -z "$quiet" ]; then
+		echo "$1"
+	fi
+}
+
+verbose() {
+	if [ -n "$verbose" ]; then
+		echo "$1"
+	fi
+}
+
+checkPathComponent() {
+	local msg="Dangerous path component discovered: $1"
+	if [ "$1" = "." -o "$1" = ".." ]; then
+		abort "$msg"
+	fi
+	if echo "$1" | grep --quiet -F "/"; then
+		abort "$msg"
+	fi
+}