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/*
* MinIO Go Library for Amazon S3 Compatible Cloud Storage
* Copyright 2015-2025 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package set
import "github.com/tinylib/msgp/msgp"
// EncodeMsg encodes the message to the writer.
// Values are stored as a slice of strings or nil.
func (s StringSet) EncodeMsg(writer *msgp.Writer) error {
if s == nil {
return writer.WriteNil()
}
err := writer.WriteArrayHeader(uint32(len(s)))
if err != nil {
return err
}
sorted := s.ToByteSlices()
for _, k := range sorted {
err = writer.WriteStringFromBytes(k)
if err != nil {
return err
}
}
return nil
}
// MarshalMsg encodes the message to the bytes.
// Values are stored as a slice of strings or nil.
func (s StringSet) MarshalMsg(bytes []byte) ([]byte, error) {
if s == nil {
return msgp.AppendNil(bytes), nil
}
if len(s) == 0 {
return msgp.AppendArrayHeader(bytes, 0), nil
}
bytes = msgp.AppendArrayHeader(bytes, uint32(len(s)))
sorted := s.ToByteSlices()
for _, k := range sorted {
bytes = msgp.AppendStringFromBytes(bytes, k)
}
return bytes, nil
}
// DecodeMsg decodes the message from the reader.
func (s *StringSet) DecodeMsg(reader *msgp.Reader) error {
if reader.IsNil() {
*s = nil
return reader.Skip()
}
sz, err := reader.ReadArrayHeader()
if err != nil {
return err
}
dst := *s
if dst == nil {
dst = make(StringSet, sz)
} else {
for k := range dst {
delete(dst, k)
}
}
for i := uint32(0); i < sz; i++ {
var k string
k, err = reader.ReadString()
if err != nil {
return err
}
dst[k] = struct{}{}
}
*s = dst
return nil
}
// UnmarshalMsg decodes the message from the bytes.
func (s *StringSet) UnmarshalMsg(bytes []byte) ([]byte, error) {
if msgp.IsNil(bytes) {
*s = nil
return bytes[msgp.NilSize:], nil
}
// Read the array header
sz, bytes, err := msgp.ReadArrayHeaderBytes(bytes)
if err != nil {
return nil, err
}
dst := *s
if dst == nil {
dst = make(StringSet, sz)
} else {
for k := range dst {
delete(dst, k)
}
}
for i := uint32(0); i < sz; i++ {
var k string
k, bytes, err = msgp.ReadStringBytes(bytes)
if err != nil {
return nil, err
}
dst[k] = struct{}{}
}
*s = dst
return bytes, nil
}
// Msgsize returns the maximum size of the message.
func (s StringSet) Msgsize() int {
if s == nil {
return msgp.NilSize
}
if len(s) == 0 {
return msgp.ArrayHeaderSize
}
size := msgp.ArrayHeaderSize
for key := range s {
size += msgp.StringPrefixSize + len(key)
}
return size
}
// MarshalBinary encodes the receiver into a binary form and returns the result.
func (s StringSet) MarshalBinary() ([]byte, error) {
return s.MarshalMsg(nil)
}
// AppendBinary appends the binary representation of itself to the end of b
func (s StringSet) AppendBinary(b []byte) ([]byte, error) {
return s.MarshalMsg(b)
}
// UnmarshalBinary decodes the binary representation of itself from b
func (s *StringSet) UnmarshalBinary(b []byte) error {
_, err := s.UnmarshalMsg(b)
return err
}
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