From 7fca77ec9fa4a863380672df69110c9a03a687f1 Mon Sep 17 00:00:00 2001
From: bigeagle <justin.w.xd@gmail.com>
Date: Sun, 20 Nov 2016 16:49:13 +0800
Subject: [PATCH] dir-not-empty function

---
 helpers/apt-download |  6 +++---
 helpers/helpers      | 10 ++++++++++
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/helpers/apt-download b/helpers/apt-download
index 5cd02f5..2476722 100644
--- a/helpers/apt-download
+++ b/helpers/apt-download
@@ -161,9 +161,9 @@ function apt-download-binary() {
 		[[ $downloaded == false ]] && ERROR=1
 	done
 	
-	mv ${pkgidx_tmp_dir}/* ${pkgidx_dir}
-	mv ${comp_tmp_dir}/* ${comp_dir}
-	mv ${dist_tmp_dir}/* ${dist_dir}
+	dir-not-empty ${pkgidx_tmp_dir} && mv ${pkgidx_tmp_dir}/* ${pkgidx_dir}
+	dir-not-empty ${dist_tmp_dir} && mv ${dist_tmp_dir}/* ${dist_dir}
+	dir-not-empty ${comp_tmp_dir} && mv ${comp_tmp_dir}/* ${comp_dir}
 
 	rmdir ${pkgidx_tmp_dir} ${dist_tmp_dir} ${comp_tmp_dir}
 
diff --git a/helpers/helpers b/helpers/helpers
index b55d341..091aac9 100644
--- a/helpers/helpers
+++ b/helpers/helpers
@@ -13,5 +13,15 @@ function check-and-download() {
 	return
 }
 
+function dir-not-empty() {
+	local dir=$1
+	[[ ! -d "$dir" ]] && return 1
+	nfiles=$(ls -a "$dir" | wc -l)
+	if (( ${nfiles} > 2 )); then
+		return 0
+	fi
+	return 1
+}
+
 LOADED_HELPERS="yes"