From 08b995e1698f6e2b548a523c067b3b9048ea8bdd Mon Sep 17 00:00:00 2001
From: Inhere <in.798@qq.com>
Date: Sat, 11 Feb 2023 19:16:57 +0800
Subject: [PATCH] :necktie: up: enhance support slice with ParseDefault and
 ParseEnv. fix: #114

---
 issues_test.go | 25 +++++++++++++++++++++++++
 load.go        | 10 +++++++---
 2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/issues_test.go b/issues_test.go
index 73cce71..e208a32 100644
--- a/issues_test.go
+++ b/issues_test.go
@@ -282,3 +282,28 @@ func TestIssues_96(t *testing.T) {
 	is.NotEmpty(c.Data())
 	is.Eq([]string{"Test1", "Test2"}, c.Get("parent.child"))
 }
+
+// https://github.com/gookit/config/issues/114
+func TestIssues_114(t *testing.T) {
+	c := config.NewWithOptions("test",
+		config.ParseDefault,
+		config.ParseEnv,
+		config.Readonly,
+	)
+
+	type conf struct {
+		Name  string   `mapstructure:"name" default:"${NAME | Bob}"`
+		Value []string `mapstructure:"value" default:"${VAL | val1}"`
+	}
+
+	err := c.LoadExists("")
+	assert.NoErr(t, err)
+
+	var cc conf
+	err = c.Decode(&cc)
+	assert.NoErr(t, err)
+
+	assert.Eq(t, "Bob", cc.Name)
+	assert.Eq(t, []string{"val1"}, cc.Value)
+	// dump.Println(cc)
+}
diff --git a/load.go b/load.go
index c0a914f..7fe3e18 100644
--- a/load.go
+++ b/load.go
@@ -4,7 +4,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -42,6 +42,10 @@ func LoadExists(sourceFiles ...string) error { return dc.LoadExists(sourceFiles.
 // LoadExists load and parse config files, but will ignore not exists file.
 func (c *Config) LoadExists(sourceFiles ...string) (err error) {
 	for _, file := range sourceFiles {
+		if file == "" {
+			continue
+		}
+
 		if err = c.loadFile(file, true, ""); err != nil {
 			return
 		}
@@ -72,7 +76,7 @@ func (c *Config) LoadRemote(format, url string) (err error) {
 	}
 
 	// read response content
-	bts, err := ioutil.ReadAll(resp.Body)
+	bts, err := io.ReadAll(resp.Body)
 	if err == nil {
 		if err = c.parseSourceCode(format, bts); err != nil {
 			return
@@ -386,7 +390,7 @@ func (c *Config) loadFile(file string, loadExist bool, format string) (err error
 	defer fd.Close()
 
 	// read file content
-	bts, err := ioutil.ReadAll(fd)
+	bts, err := io.ReadAll(fd)
 	if err == nil {
 		// get format for file ext
 		if format == "" {