Add site.Stop method (fix #35)

site.go

@@ -134,6 +134,25 @@ func (site *Site) Start() DeployError {
 	return DeployError{}
 }
 
+// Stop attempts to stop a Lapis server in the given repository.
+func (site *Site) Stop() DeployError {
+	log.Printf("Stopping Lapis server %s...", site.getName())
+
+	old_cwd, _ := os.Getwd()
+	defer syscall.Chdir(old_cwd)
+	syscall.Chdir(configuration.sites_dir + "/" + site.name)
+
+	cmd := exec.Command("lapis", "term")
+	if err := cmd.Start(); err != nil {
+		return newDeployError(1, "stopSite",
+			fmt.Sprintf("Failed to stop Lapis server in '%s'", site.getName()), "")
+	}
+	go func() {
+		cmd.Wait()
+	}()
+	return DeployError{}
+}
+
 // Restart attempts to restart the Lapis server in the given repository.
 func (site *Site) Restart() DeployError {
 	log.Printf("Restarting Lapis server in %s...", site.getName())