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package utils
import (
"reflect"
"unsafe"
)
// AsBytes returns a slice that refers to the data backing the string s.
func AsBytes(s string) []byte {
// get the pointer to the data of the string
p := unsafe.Pointer((*reflect.StringHeader)(unsafe.Pointer(&s)).Data)
var b []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&b))
hdr.Data = uintptr(p)
// we need to set the cap and len for the string to byte convert
// because string is shorter than []bytes
hdr.Cap = len(s)
hdr.Len = len(s)
return b
}
// AsString returns a string that refers to the data backing the slice s.
func AsString(b []byte) string {
p := unsafe.Pointer((*reflect.SliceHeader)(unsafe.Pointer(&b)).Data)
var s string
hdr := (*reflect.StringHeader)(unsafe.Pointer(&s))
hdr.Data = uintptr(p)
hdr.Len = len(b)
return s
}
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