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master
encoding/gbinary/gbinary_bit.go
74 строки
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houseme
improve code import
16 ноя 2021, 14:29
16 ноя 2021, 14:29
e86ee05
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// Copyright GoFrame Author(https://goframe.org). All Rights Reserved. // // This Source Code Form is subject to the terms of the MIT License. // If a copy of the MIT was not distributed with this file, // You can obtain one at https://github.com/gogf/gf. package gbinary // NOTE: THIS IS AN EXPERIMENTAL FEATURE! // Bit Binary bit (0 | 1) type Bit int8 // EncodeBits does encode bits return bits Default coding func EncodeBits(bits []Bit, i int, l int) []Bit { return EncodeBitsWithUint(bits, uint(i), l) } // EncodeBitsWithUint . Merge ui bitwise into the bits array and occupy the length bits // (Note: binary 0 | 1 digits are stored in the uis array) func EncodeBitsWithUint(bits []Bit, ui uint, l int) []Bit { a := make([]Bit, l) for i := l - 1; i >= 0; i-- { a[i] = Bit(ui & 1) ui >>= 1 } if bits != nil { return append(bits, a...) } return a } // EncodeBitsToBytes . does encode bits to bytes // Convert bits to [] byte, encode from left to right, and add less than 1 byte from 0 to the end. func EncodeBitsToBytes(bits []Bit) []byte { if len(bits)%8 != 0 { for i := 0; i < len(bits)%8; i++ { bits = append(bits, 0) } } b := make([]byte, 0) for i := 0; i < len(bits); i += 8 { b = append(b, byte(DecodeBitsToUint(bits[i:i+8]))) } return b } // DecodeBits .does decode bits to int // Resolve to int func DecodeBits(bits []Bit) int { v := 0 for _, i := range bits { v = v<<1 | int(i) } return v } // DecodeBitsToUint .Resolve to uint func DecodeBitsToUint(bits []Bit) uint { v := uint(0) for _, i := range bits { v = v<<1 | uint(i) } return v } // DecodeBytesToBits .Parsing [] byte into character array [] uint8 func DecodeBytesToBits(bs []byte) []Bit { bits := make([]Bit, 0) for _, b := range bs { bits = EncodeBitsWithUint(bits, uint(b), 8) } return bits }