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package encode |
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import ( |
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"encoding/binary" |
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"math" |
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"github.com/et-nik/binngo/binn" |
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) |
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type intType uint8 |
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func Uint(v uint) []byte { |
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switch detectUintType(v) { |
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case binn.Uint8Type: |
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return Uint8(uint8(v)) |
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case binn.Uint16Type: |
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return Uint16(uint16(v)) |
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case binn.Uint32Type: |
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return Uint32(uint32(v)) |
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default: |
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return Uint64(uint64(v)) |
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} |
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} |
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func Int(v int) []byte { |
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1 |
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t := detectIntType(v) |
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1 |
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result := []byte{} |
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1 |
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switch t { |
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case binn.Int8Type: |
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result = Int8(int8(v)) |
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case binn.Uint8Type: |
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1 |
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result = Uint8(uint8(v)) |
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case binn.Int16Type: |
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1 |
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result = Int16(int16(v)) |
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case binn.Uint16Type: |
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1 |
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result = Uint16(uint16(v)) |
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case binn.Int32Type: |
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1 |
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result = Int32(int32(v)) |
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case binn.Uint32Type: |
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result = Uint32(uint32(v)) |
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case binn.Int64Type: |
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result = Int64(int64(v)) |
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case binn.Uint64Type: |
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1 |
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result = Uint64(uint64(v)) |
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} |
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1 |
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return result |
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} |
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func detectUintType(v uint) intType { |
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switch { |
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case v <= math.MaxUint8: |
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return binn.Uint8Type |
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case v <= math.MaxUint16: |
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return binn.Uint16Type |
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case v <= math.MaxUint32: |
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return binn.Uint32Type |
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default: |
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return binn.Uint64Type |
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} |
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} |
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func detectIntType(v int) intType { |
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1 |
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t := binn.Int64Type |
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1 |
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if v > 0 { |
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1 |
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switch t { |
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case binn.Int64Type: |
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1 |
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t = binn.Uint64Type |
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case binn.Int32Type: |
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t = binn.Uint32Type |
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case binn.Int16Type: |
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t = binn.Uint16Type |
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case binn.Int8Type: |
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t = binn.Uint8Type |
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} |
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} |
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1 |
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if t == binn.Int64Type || |
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t == binn.Int32Type || |
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t == binn.Int16Type { |
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1 |
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switch { |
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case v >= math.MinInt8: |
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t = binn.Int8Type |
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case v >= math.MinInt16: |
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1 |
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t = binn.Int16Type |
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case v >= math.MinInt32: |
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1 |
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t = binn.Int32Type |
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} |
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} |
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1 |
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if t == binn.Uint64Type || |
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t == binn.Uint32Type || |
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t == binn.Uint16Type { |
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1 |
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switch { |
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case v <= math.MaxUint8: |
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1 |
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t = binn.Uint8Type |
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case v <= math.MaxUint16: |
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1 |
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t = binn.Uint16Type |
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case v <= math.MaxInt32: |
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t = binn.Uint32Type |
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} |
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} |
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1 |
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return intType(t) |
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} |
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func Int8(v int8) []byte { |
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return []byte{uint8(v)} |
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} |
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func Uint8(v uint8) []byte { |
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1 |
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return []byte{v} |
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} |
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func Uint16(v uint16) []byte { |
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1 |
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t := make([]byte, 2) |
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1 |
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binary.BigEndian.PutUint16(t, v) |
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1 |
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var r []byte |
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1 |
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r = append(r, t...) |
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1 |
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return r |
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} |
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func Int16(v int16) []byte { |
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1 |
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t := make([]byte, 2) |
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1 |
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binary.BigEndian.PutUint16(t, uint16(v)) |
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1 |
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var r []byte |
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1 |
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r = append(r, t...) |
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1 |
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return r |
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} |
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func Uint32(v uint32) []byte { |
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t := make([]byte, 4) |
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binary.BigEndian.PutUint32(t, v) |
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142
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var r []byte |
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r = append(r, t...) |
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return r |
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} |
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148
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func Int32(v int32) []byte { |
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1 |
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t := make([]byte, 4) |
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1 |
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binary.BigEndian.PutUint32(t, uint32(v)) |
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152
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1 |
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var r []byte |
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1 |
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r = append(r, t...) |
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1 |
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return r |
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} |
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157
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158
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func Uint64(v uint64) []byte { |
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1 |
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t := make([]byte, 8) |
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1 |
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binary.BigEndian.PutUint64(t, v) |
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162
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1 |
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return t |
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} |
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164
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165
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func Int64(v int64) []byte { |
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t := make([]byte, 8) |
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binary.BigEndian.PutUint64(t, uint64(v)) |
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168
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169
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return t |
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} |
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172
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func Size(size int, totalSize bool) []byte { |
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1 |
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sz := size |
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175
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1 |
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if totalSize { |
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1 |
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sz++ |
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} |
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179
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1 |
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if sz <= math.MaxInt8 { |
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1 |
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return []byte{byte(sz)} |
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} |
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182
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183
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1 |
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if totalSize { |
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sz += 3 |
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185
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} |
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186
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187
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1 |
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return encodeSize32(sz) |
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} |
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189
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190
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func encodeSize32(s int) []byte { |
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191
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1 |
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i := s | (-1 << 31) |
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192
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193
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1 |
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b := make([]byte, 4) |
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194
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1 |
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binary.BigEndian.PutUint32(b, uint32(i)) |
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195
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196
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1 |
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return b |
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197
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} |
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198
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et-nik /
binngo
