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Copy pathbytes.go
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80 lines (69 loc) · 2.1 KB
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Copy pathbytes.go
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80 lines (69 loc) · 2.1 KB
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// Copyright 2018 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gtype
import (
"bytes"
"encoding/base64"
"github.com/gogf/gf/util/gconv"
"sync/atomic"
)
// Bytes is a struct for concurrent-safe operation for type []byte.
type Bytes struct {
value atomic.Value
}
// NewBytes creates and returns a concurrent-safe object for []byte type,
// with given initial value <value>.
func NewBytes(value ...[]byte) *Bytes {
t := &Bytes{}
if len(value) > 0 {
t.value.Store(value[0])
}
return t
}
// Clone clones and returns a new concurrent-safe object for []byte type.
func (v *Bytes) Clone() *Bytes {
return NewBytes(v.Val())
}
// Set atomically stores <value> into t.value and returns the previous value of t.value.
// Note: The parameter <value> cannot be nil.
func (v *Bytes) Set(value []byte) (old []byte) {
old = v.Val()
v.value.Store(value)
return
}
// Val atomically loads and returns t.value.
func (v *Bytes) Val() []byte {
if s := v.value.Load(); s != nil {
return s.([]byte)
}
return nil
}
// String implements String interface for string printing.
func (v *Bytes) String() string {
return string(v.Val())
}
// MarshalJSON implements the interface MarshalJSON for json.Marshal.
func (v *Bytes) MarshalJSON() ([]byte, error) {
val := v.Val()
dst := make([]byte, base64.StdEncoding.EncodedLen(len(val)))
base64.StdEncoding.Encode(dst, val)
return gconv.UnsafeStrToBytes(`"` + gconv.UnsafeBytesToStr(dst) + `"`), nil
}
// UnmarshalJSON implements the interface UnmarshalJSON for json.Unmarshal.
func (v *Bytes) UnmarshalJSON(b []byte) error {
src := make([]byte, base64.StdEncoding.DecodedLen(len(b)))
n, err := base64.StdEncoding.Decode(src, bytes.Trim(b, `"`))
if err != nil {
return nil
}
v.Set(src[:n])
return nil
}
// UnmarshalValue is an interface implement which sets any type of value for <v>.
func (v *Bytes) UnmarshalValue(value interface{}) error {
v.Set(gconv.Bytes(value))
return nil
}