Create & Init Project...

app/admin/main/reply/model/sql.go

@@ -0,0 +1,64 @@
+package model
+
+import (
+	"database/sql/driver"
+	"encoding/binary"
+)
+
+// Int64Bytes implements the Scanner interface.
+type Int64Bytes []int64
+
+// Scan parse the data into int64 slice
+func (is *Int64Bytes) Scan(src interface{}) (err error) {
+	switch sc := src.(type) {
+	case []byte:
+		var res []int64
+		for i := 0; i < len(sc) && i+8 <= len(sc); i += 8 {
+			ui := binary.BigEndian.Uint64(sc[i : i+8])
+			res = append(res, int64(ui))
+		}
+		*is = res
+	}
+	return
+}
+
+// Value marshal int64 slice to driver.Value,each int64 will occupy Fixed 8 bytes
+func (is Int64Bytes) Value() (driver.Value, error) {
+	return is.Bytes(), nil
+}
+
+// Bytes marshal int64 slice to bytes,each int64 will occupy Fixed 8 bytes
+func (is Int64Bytes) Bytes() []byte {
+	res := make([]byte, 0, 8*len(is))
+	for _, i := range is {
+		bs := make([]byte, 8)
+		binary.BigEndian.PutUint64(bs, uint64(i))
+		res = append(res, bs...)
+	}
+	return res
+}
+
+// Evict get rid of the sepcified num  from the slice
+func (is *Int64Bytes) Evict(e int64) (ok bool) {
+	res := make([]int64, len(*is)-1)
+	for _, v := range *is {
+		if v != e {
+			res = append(res, v)
+		} else {
+			ok = true
+		}
+	}
+	*is = res
+	return
+}
+
+// Exist judge the sepcified num is in the slice or not
+func (is Int64Bytes) Exist(i int64) (e bool) {
+	for _, v := range is {
+		if v == i {
+			e = true
+			return
+		}
+	}
+	return
+}