mirror of
https://github.com/Mrs4s/MiraiGo.git
synced 2025-05-04 19:17:38 +08:00
120 lines
2.2 KiB
Go
120 lines
2.2 KiB
Go
package proto
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import (
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"encoding/binary"
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"math"
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"sort"
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)
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type DynamicMessage map[uint64]any
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// zigzag encoding types
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type (
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SInt int
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SInt32 int32
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SInt64 int64
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)
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type encoder struct {
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buf []byte
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}
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func (msg DynamicMessage) Encode() []byte {
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en := encoder{}
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// sort all items
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type pair struct {
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key uint64
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value any
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}
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all := make([]pair, len(msg))
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for k, v := range msg {
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all = append(all, pair{key: k, value: v})
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}
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sort.Slice(all, func(i, j int) bool {
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return all[i].key < all[j].key
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})
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//nolint:staticcheck
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for _, item := range all {
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key := item.key << 3
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switch v := item.value.(type) {
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case bool:
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en.uvarint(key | 0)
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vi := uint64(0)
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if v {
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vi = 1
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}
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en.uvarint(vi)
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case int:
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en.uvarint(key | 0)
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en.uvarint(uint64(v))
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case uint:
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en.uvarint(key | 0)
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en.uvarint(uint64(v))
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case int32:
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en.uvarint(key | 0)
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en.uvarint(uint64(v))
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case int64:
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en.uvarint(key | 0)
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en.uvarint(uint64(v))
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case uint32:
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en.uvarint(key | 0)
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en.uvarint(uint64(v))
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case uint64:
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en.uvarint(key | 0)
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en.uvarint(v)
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case SInt:
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en.uvarint(key | 0)
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en.svarint(int64(v))
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case SInt32:
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en.uvarint(key | 0)
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en.svarint(int64(v))
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case SInt64:
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en.uvarint(key | 0)
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en.svarint(int64(v))
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case float32:
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en.uvarint(key | 5)
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en.u32(math.Float32bits(v))
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case float64:
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en.uvarint(key | 1)
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en.u64(math.Float64bits(v))
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case string:
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en.uvarint(key | 2)
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en.uvarint(uint64(len(v)))
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en.buf = append(en.buf, v...)
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case []uint64:
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for i := 0; i < len(v); i++ {
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en.uvarint(key | 0)
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en.uvarint(v[i])
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}
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case []byte:
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en.uvarint(key | 2)
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en.uvarint(uint64(len(v)))
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en.buf = append(en.buf, v...)
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case DynamicMessage:
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en.uvarint(key | 2)
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b := v.Encode()
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en.uvarint(uint64(len(b)))
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en.buf = append(en.buf, b...)
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}
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}
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return en.buf
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}
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func (en *encoder) uvarint(v uint64) {
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en.buf = binary.AppendUvarint(en.buf, v)
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}
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func (en *encoder) svarint(v int64) {
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en.buf = binary.AppendVarint(en.buf, v)
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}
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func (en *encoder) u32(v uint32) {
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en.buf = binary.LittleEndian.AppendUint32(en.buf, v)
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}
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func (en *encoder) u64(v uint64) {
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en.buf = binary.LittleEndian.AppendUint64(en.buf, v)
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}
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