Replace utils/file with go-fs and go-installer, fix previous tests

utils/installer.go

@@ -0,0 +1,28 @@
+package utils
+
+import (
+	"os"
+	"runtime"
+)
+
+const (
+	// ContentBINARY is the  string of "application/octet-stream response headers
+	ContentBINARY = "application/octet-stream"
+)
+
+var (
+	// AssetsDirectory the path which iris saves some assets came from the internet ( used in iris control plugin (to download the html,css,js) and for iris command line tool to download the packages)
+	AssetsDirectory = ""
+)
+
+// init just sets the iris path for assets, used in iris control plugin and for iris command line tool(create command)
+// the AssetsDirectory path should be like: C:/users/kataras/.iris (for windows) and for linux you can imagine
+func init() {
+	homepath := ""
+	if runtime.GOOS == "windows" {
+		homepath = os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
+	} else {
+		homepath = os.Getenv("HOME")
+	}
+	AssetsDirectory = homepath + PathSeparator + ".iris"
+}