Add util

util/file/file.go

@@ -0,0 +1,15 @@
+package file
+
+import "os"
+
+// Exists returns true if the path is existing
+func Exists(path string) (bool, error) {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return true, err
+}

util/file/file_test.go

@@ -0,0 +1,17 @@
+package file
+
+import (
+	"testing"
+)
+
+func TestExists(t *testing.T) {
+	ok, err := Exists("/")
+
+	if ok {
+		return
+	}
+
+	if !ok || err != nil {
+		t.Fatalf("Test Exists fail, %s", err)
+	}
+}