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byteview.go
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/
byteview.go
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package epcache
import "bytes"
// ByteView holds an immutable view of bytes,
// it should be used as a value type, not a pointer type.
type ByteView struct {
b []byte
}
func (bv ByteView) Len() int {
return len(bv.b)
}
// ByteSlice returns a copy of the data as a byte slice.
func (bv ByteView) ByteSlice() []byte {
return cloneBytes(bv.b)
}
func (bv ByteView) String() string {
return string(cloneBytes(bv.b))
}
// Slice slices the view between from and to.
func (bv ByteView) Slice(from, to int) ByteView {
return ByteView{bv.b[from:to]}
}
// Equal returns whether the bytes in bv are the same as the bytes in bv2.
func (bv ByteView) Equal(bv2 ByteView) bool {
return bytes.Equal(bv.b, bv2.b)
}
// EqualBytes returns whether the bytes in bv are the same as the bytes b2.
func (bv ByteView) EqualBytes(b2 []byte) bool {
return bytes.Equal(bv.b, b2)
}
func cloneBytes(b []byte) []byte {
c := make([]byte, len(b))
copy(c, b)
return c
}