/
strutil.go
56 lines (51 loc) · 1.67 KB
/
strutil.go
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/*
* proofable
* Copyright (C) 2020 Southbank Software Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* @Author: guiguan
* @Date: 2020-03-17T09:42:27+11:00
* @Last modified by: guiguan
* @Last modified time: 2020-04-03T15:57:55+11:00
*/
package strutil
import (
"bytes"
"reflect"
"unsafe"
)
// String returns the string representation of the byte slice without copying
func String(byt []byte) string {
hdr := *(*reflect.SliceHeader)(unsafe.Pointer(&byt))
return *(*string)(unsafe.Pointer(&reflect.StringHeader{
Data: hdr.Data,
Len: hdr.Len,
}))
}
// Bytes returns the byte slice representation of the string without copying. The byte slice must
// NOT be changed
func Bytes(str string) []byte {
hdr := *(*reflect.StringHeader)(unsafe.Pointer(&str))
return *(*[]byte)(unsafe.Pointer(&reflect.SliceHeader{
Data: hdr.Data,
Len: hdr.Len,
Cap: hdr.Len,
}))
}
// BytesWithoutNullChar returns a new byte slice with the null characters removed
func BytesWithoutNullChar(byt []byte) []byte {
return bytes.ReplaceAll(byt, Bytes("\x00"), nil)
}