✨ feat: add buffer

✅ test: update datetime testing case

buffer.go

@@ -0,0 +1,39 @@
+package utils
+
+import "strings"
+
+
+const (
+    hextable = "0123456789abcdef"
+)
+
+type Buffer []byte
+
+func NewBuffer() Buffer {
+    return make([]byte,0)
+}
+
+func (b Buffer) Length() int{
+    return len(b) // the unint is byte
+}
+
+func (b Buffer) String() string {
+    str := make([]byte,b.Length() << 1)
+    j := 0
+    for _,item := range b {
+        str[j] = hextable[item>>4]
+        str[j+1] = hextable[item&0x0f]
+        j += 2
+    }
+    return string(str)
+}
+
+func (b Buffer) Load(data string) Buffer{
+    for i:= 0;i < len(data);i+=2 {
+        cache := 0x00
+        cache = strings.Index(hextable,string(data[i])) << 4
+        cache = cache | strings.Index(hextable,string(data[i+1]))
+        b = append(b,  byte(cache))
+    }
+    return b
+}

utils_test.go

@@ -326,6 +326,14 @@ func TestDateTime(t *testing.T) {
 		t.Error("caculate has wrong")
 	}
 
+    datetime2 := utils.NewDateTime()
+
+    datetime2 = *datetime2.Parse("2024/06/06/23:10:40","YYYY/MM/DD/HH:mm:ss")
+
+    if datetime2.Year != 2024 {
+        t.Error("paser has wrong")
+    }
+    fmt.Printf("解析后时间 %s",datetime2.String())
 }
 
 func TestNumberConver(t *testing.T) {
@@ -441,8 +449,6 @@ func TestReferenceString(t *testing.T){
 func TestBuffer(t *testing.T){
     bf := utils.NewBuffer()
     bf = bf.Load("320c3a83c202880e83fa0814320c3a83c202880e83fa10")
-    fmt.Printf("%#v\n",bf)
-
     if bf[0] != 0x32 {
         t.Error(fmt.Sprintf("TestBuffer expect: %d,but got %d",0x32,bf[0]))
     }