mirror of https://github.com/v2ray/v2ray-core
66 lines
1.7 KiB
Go
Executable File
66 lines
1.7 KiB
Go
Executable File
package serial
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import "encoding/hex"
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// ByteToHexString converts a byte into hex string.
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func ByteToHexString(value byte) string {
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return hex.EncodeToString([]byte{value})
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}
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// BytesToUint16 deserializes a byte array to a uint16 in big endian order. The byte array must have at least 2 elements.
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func BytesToUint16(value []byte) uint16 {
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_ = value[1] // bounds check hint to compiler; see golang.org/issue/14808
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return uint16(value[0])<<8 | uint16(value[1])
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}
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// BytesToUint32 deserializes a byte array to a uint32 in big endian order. The byte array must have at least 4 elements.
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func BytesToUint32(value []byte) uint32 {
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_ = value[3]
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return uint32(value[0])<<24 |
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uint32(value[1])<<16 |
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uint32(value[2])<<8 |
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uint32(value[3])
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}
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// BytesToInt deserializes a bytes array (of at leat 4 bytes) to an int in big endian order.
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func BytesToInt(value []byte) int {
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_ = value[3]
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return int(value[0])<<24 |
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int(value[1])<<16 |
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int(value[2])<<8 |
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int(value[3])
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}
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// BytesToInt64 deserializes a byte array to an int64 in big endian order. The byte array must have at least 8 elements.
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func BytesToInt64(value []byte) int64 {
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_ = value[7]
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return int64(value[0])<<56 |
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int64(value[1])<<48 |
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int64(value[2])<<40 |
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int64(value[3])<<32 |
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int64(value[4])<<24 |
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int64(value[5])<<16 |
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int64(value[6])<<8 |
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int64(value[7])
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}
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// BytesToHexString converts a byte array into hex string.
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func BytesToHexString(value []byte) string {
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m := hex.EncodedLen(len(value))
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if m == 0 {
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return "[]"
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}
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n := 1 + m + m/2
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b := make([]byte, n)
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hex.Encode(b[1:], value)
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b[0] = '['
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for i, j := n-3, m-2+1; i > 0; i -= 3 {
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b[i+2] = ','
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b[i+1] = b[j+1]
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b[i] = b[j]
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j -= 2
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}
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b[n-1] = ']'
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return string(b)
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}
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