mirror of
https://github.com/octoleo/syncthing.git
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134 lines
3.2 KiB
Go
134 lines
3.2 KiB
Go
// Protocol Buffers for Go with Gadgets
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//
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// Copyright (c) 2013, The GoGo Authors. All rights reserved.
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// http://github.com/gogo/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package test
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import (
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"bytes"
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"encoding/hex"
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"encoding/json"
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)
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func PutLittleEndianUint64(b []byte, offset int, v uint64) {
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b[offset] = byte(v)
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b[offset+1] = byte(v >> 8)
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b[offset+2] = byte(v >> 16)
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b[offset+3] = byte(v >> 24)
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b[offset+4] = byte(v >> 32)
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b[offset+5] = byte(v >> 40)
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b[offset+6] = byte(v >> 48)
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b[offset+7] = byte(v >> 56)
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}
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type Uuid []byte
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func (uuid Uuid) Marshal() ([]byte, error) {
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if len(uuid) == 0 {
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return nil, nil
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}
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return []byte(uuid), nil
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}
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func (uuid Uuid) MarshalTo(data []byte) (n int, err error) {
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if len(uuid) == 0 {
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return 0, nil
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}
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copy(data, uuid)
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return 16, nil
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}
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func (uuid *Uuid) Unmarshal(data []byte) error {
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if len(data) == 0 {
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uuid = nil
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return nil
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}
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id := Uuid(make([]byte, 16))
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copy(id, data)
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*uuid = id
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return nil
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}
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func (uuid *Uuid) Size() int {
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if uuid == nil {
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return 0
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}
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if len(*uuid) == 0 {
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return 0
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}
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return 16
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}
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func (uuid Uuid) MarshalJSON() ([]byte, error) {
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s := hex.EncodeToString([]byte(uuid))
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return json.Marshal(s)
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}
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func (uuid *Uuid) UnmarshalJSON(data []byte) error {
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var s string
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err := json.Unmarshal(data, &s)
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if err != nil {
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return err
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}
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d, err := hex.DecodeString(s)
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if err != nil {
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return err
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}
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*uuid = Uuid(d)
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return nil
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}
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func (uuid Uuid) Equal(other Uuid) bool {
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return bytes.Equal(uuid[0:], other[0:])
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}
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func (uuid Uuid) Compare(other Uuid) int {
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return bytes.Compare(uuid[0:], other[0:])
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}
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type int63 interface {
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Int63() int64
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}
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func NewPopulatedUuid(r int63) *Uuid {
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u := RandV4(r)
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return &u
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}
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func RandV4(r int63) Uuid {
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uuid := make(Uuid, 16)
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uuid.RandV4(r)
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return uuid
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}
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func (uuid Uuid) RandV4(r int63) {
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PutLittleEndianUint64(uuid, 0, uint64(r.Int63()))
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PutLittleEndianUint64(uuid, 8, uint64(r.Int63()))
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uuid[6] = (uuid[6] & 0xf) | 0x40
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uuid[8] = (uuid[8] & 0x3f) | 0x80
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}
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