New startup and shutdown directives

middleware/commands.go

@@ -0,0 +1,27 @@
+package middleware
+
+import (
+	"errors"
+
+	"github.com/flynn/go-shlex"
+)
+
+// SplitCommandAndArgs takes a command string and parses it
+// shell-style into the command and its separate arguments.
+func SplitCommandAndArgs(command string) (cmd string, args []string, err error) {
+	parts, err := shlex.Split(command)
+	if err != nil {
+		err = errors.New("Error parsing command: " + err.Error())
+		return
+	} else if len(parts) == 0 {
+		err = errors.New("No command contained in '" + command + "'")
+		return
+	}
+
+	cmd = parts[0]
+	if len(parts) > 1 {
+		args = parts[1:]
+	}
+
+	return
+}