mirror of
https://github.com/Mrs4s/MiraiGo.git
synced 2025-05-04 19:17:38 +08:00
98 lines
1.7 KiB
Go
98 lines
1.7 KiB
Go
package binary
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import (
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"bytes"
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"encoding/binary"
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"math"
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)
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type DynamicProtoMessage map[uint64]interface{}
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type encoder struct {
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bytes.Buffer
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}
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func (msg DynamicProtoMessage) Encode() []byte {
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en := &encoder{}
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for id, value := range msg {
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key := id << 3
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switch v := 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.svarint(int64(v))
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case int32:
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en.uvarint(key | 0)
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en.svarint(int64(v))
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case int64:
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en.uvarint(key | 0)
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en.svarint(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 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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b := []byte(v)
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en.uvarint(uint64(len(b)))
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_, _ = en.Write(b)
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case DynamicProtoMessage:
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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.Write(b)
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}
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}
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return en.Bytes()
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}
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func (en *encoder) uvarint(v uint64) {
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var b [binary.MaxVarintLen64]byte
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n := binary.PutUvarint(b[:], v)
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_, _ = en.Write(b[:n])
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}
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func (en *encoder) svarint(v int64) {
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if v >= 0 {
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en.uvarint(uint64(v) << 1)
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} else {
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en.uvarint(^uint64(v << 1))
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}
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}
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func (en *encoder) u32(v uint32) {
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var b [4]byte
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b[0] = byte(v)
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b[1] = byte(v >> 8)
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b[2] = byte(v >> 16)
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b[3] = byte(v >> 24)
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_, _ = en.Write(b[:])
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}
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func (en *encoder) u64(v uint64) {
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var b [8]byte
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b[0] = byte(v)
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b[1] = byte(v >> 8)
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b[2] = byte(v >> 16)
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b[3] = byte(v >> 24)
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b[4] = byte(v >> 32)
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b[5] = byte(v >> 40)
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b[6] = byte(v >> 48)
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b[7] = byte(v >> 56)
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_, _ = en.Write(b[:])
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}
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